sdl-ios-xcode: src/video/SDL_yuv

annotate src/video/SDL_yuv_sw.c @ 3473:7bdc10624cba

This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.

author	Sam Lantinga <slouken@libsdl.org>
date	Sat, 21 Nov 2009 07:14:21 +0000
parents	94fb40a4a9a7
children	f7b03b6838cb

rev	line source
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	2 SDL - Simple DirectMedia Layer
2859 99210400e8b9 Updated copyright date Sam Lantinga <slouken@libsdl.org> parents: 2828 diff changeset	3 Copyright (C) 1997-2009 Sam Lantinga
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	4
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	5 This library is free software; you can redistribute it and/or
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	6 modify it under the terms of the GNU Lesser General Public
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	7 License as published by the Free Software Foundation; either
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	8 version 2.1 of the License, or (at your option) any later version.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	9
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	13 Lesser General Public License for more details.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	14
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	15 You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	16 License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	18
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	19 Sam Lantinga
252 e8157fcb3114 Updated the source with the correct e-mail address Sam Lantinga <slouken@libsdl.org> parents: 9 diff changeset	20 slouken@libsdl.org
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	21 */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1361 diff changeset	22 #include "SDL_config.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	23
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	24 /* This is the software implementation of the YUV texture support */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	25
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	26 /* This code was derived from code carrying the following copyright notices:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	27
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	28 * Copyright (c) 1995 The Regents of the University of California.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	29 * All rights reserved.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	30 *
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	31 * Permission to use, copy, modify, and distribute this software and its
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	32 * documentation for any purpose, without fee, and without written agreement is
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	33 * hereby granted, provided that the above copyright notice and the following
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	34 * two paragraphs appear in all copies of this software.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	35 *
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	36 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	37 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	38 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	39 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	40 *
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	41 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	42 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	43 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	44 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	45 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	46
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	47 * Copyright (c) 1995 Erik Corry
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	48 * All rights reserved.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	49 *
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	50 * Permission to use, copy, modify, and distribute this software and its
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	51 * documentation for any purpose, without fee, and without written agreement is
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	52 * hereby granted, provided that the above copyright notice and the following
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	53 * two paragraphs appear in all copies of this software.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	54 *
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	55 * IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	56 * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	57 * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	58 * OF THE POSSIBILITY OF SUCH DAMAGE.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	59 *
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	60 * ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	61 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	62 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	63 * BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	64 * UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	65
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	66 * Portions of this software Copyright (c) 1995 Brown University.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	67 * All rights reserved.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	68 *
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	69 * Permission to use, copy, modify, and distribute this software and its
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	70 * documentation for any purpose, without fee, and without written agreement
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	71 * is hereby granted, provided that the above copyright notice and the
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	72 * following two paragraphs appear in all copies of this software.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	73 *
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	74 * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	75 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	76 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	77 * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	78 *
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	79 * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	80 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	81 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	82 * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	83 * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	84 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	85
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	86 #include "SDL_video.h"
739 22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h Sam Lantinga <slouken@libsdl.org> parents: 366 diff changeset	87 #include "SDL_cpuinfo.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	88 #include "SDL_yuv_sw_c.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	89
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	90
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	91 /* The colorspace conversion functions */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	92
2197 2ff40f30af31 Merged r3261:3262 from branches/SDL-1.2: MMX/YUV with __OPTIMIZE__. Ryan C. Gordon <icculus@icculus.org> parents: 2172 diff changeset	93 #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	94 extern void Color565DitherYV12MMX1X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	95 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	96 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	97 int rows, int cols, int mod);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	98 extern void ColorRGBDitherYV12MMX1X(int colortab, Uint32 rgb_2_pix,
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	99 unsigned char lum, unsigned char cr,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	100 unsigned char cb, unsigned char out,
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	101 int rows, int cols, int mod);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	102 #endif
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	103
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	104 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	105 Color16DitherYV12Mod1X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	106 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	107 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	108 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	109 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	110 unsigned short *row1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	111 unsigned short *row2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	112 unsigned char *lum2;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	113 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	114 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	115 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	116 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	117 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	118
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	119 row1 = (unsigned short *) out;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	120 row2 = row1 + cols + mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	121 lum2 = lum + cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	122
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	123 mod += cols + mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	124
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	125 y = rows / 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	126 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	127 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	128 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	129 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	130
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	131 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	132 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	133 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	134 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	135 ++cr;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	136 ++cb;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	137
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	138 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	139 *row1++ = (unsigned short) (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	140 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	141 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	142
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	143 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	144 *row1++ = (unsigned short) (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	145 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	146 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	147
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	148
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	149 /* Now, do second row. */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	150
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	151 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	152 *row2++ = (unsigned short) (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	153 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	154 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	155
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	156 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	157 *row2++ = (unsigned short) (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	158 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	159 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	160 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	161
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	162 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	163 * These values are at the start of the next line, (due
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	164 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	165 * of the line after that.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	166 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	167 lum += cols;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	168 lum2 += cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	169 row1 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	170 row2 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	171 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	172 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	173
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	174 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	175 Color24DitherYV12Mod1X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	176 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	177 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	178 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	179 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	180 unsigned int value;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	181 unsigned char *row1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	182 unsigned char *row2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	183 unsigned char *lum2;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	184 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	185 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	186 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	187 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	188 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	189
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	190 row1 = out;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	191 row2 = row1 + cols * 3 + mod * 3;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	192 lum2 = lum + cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	193
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	194 mod += cols + mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	195 mod *= 3;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	196
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	197 y = rows / 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	198 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	199 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	200 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	201 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	202
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	203 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	204 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	205 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	206 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	207 ++cr;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	208 ++cb;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	209
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	210 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	211 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	212 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	213 *row1++ = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	214 *row1++ = (value >> 8) & 0xFF;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	215 *row1++ = (value >> 16) & 0xFF;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	216
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	217 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	218 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	219 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	220 *row1++ = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	221 *row1++ = (value >> 8) & 0xFF;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	222 *row1++ = (value >> 16) & 0xFF;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	223
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	224
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	225 /* Now, do second row. */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	226
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	227 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	228 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	229 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	230 *row2++ = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	231 *row2++ = (value >> 8) & 0xFF;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	232 *row2++ = (value >> 16) & 0xFF;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	233
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	234 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	235 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	236 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	237 *row2++ = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	238 *row2++ = (value >> 8) & 0xFF;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	239 *row2++ = (value >> 16) & 0xFF;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	240 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	241
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	242 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	243 * These values are at the start of the next line, (due
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	244 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	245 * of the line after that.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	246 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	247 lum += cols;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	248 lum2 += cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	249 row1 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	250 row2 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	251 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	252 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	253
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	254 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	255 Color32DitherYV12Mod1X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	256 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	257 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	258 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	259 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	260 unsigned int *row1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	261 unsigned int *row2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	262 unsigned char *lum2;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	263 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	264 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	265 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	266 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	267 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	268
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	269 row1 = (unsigned int *) out;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	270 row2 = row1 + cols + mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	271 lum2 = lum + cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	272
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	273 mod += cols + mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	274
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	275 y = rows / 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	276 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	277 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	278 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	279 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	280
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	281 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	282 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	283 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	284 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	285 ++cr;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	286 ++cb;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	287
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	288 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	289 *row1++ = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	290 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	291
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	292 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	293 *row1++ = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	294 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	295
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	296
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	297 /* Now, do second row. */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	298
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	299 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	300 *row2++ = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	301 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	302
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	303 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	304 *row2++ = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	305 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	306 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	307
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	308 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	309 * These values are at the start of the next line, (due
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	310 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	311 * of the line after that.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	312 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	313 lum += cols;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	314 lum2 += cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	315 row1 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	316 row2 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	317 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	318 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	319
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	320 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	321 * In this function I make use of a nasty trick. The tables have the lower
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	322 * 16 bits replicated in the upper 16. This means I can write ints and get
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	323 * the horisontal doubling for free (almost).
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	324 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	325 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	326 Color16DitherYV12Mod2X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	327 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	328 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	329 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	330 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	331 unsigned int row1 = (unsigned int ) out;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	332 const int next_row = cols + (mod / 2);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	333 unsigned int row2 = row1 + 2 next_row;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	334 unsigned char *lum2;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	335 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	336 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	337 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	338 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	339 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	340
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	341 lum2 = lum + cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	342
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	343 mod = (next_row * 3) + (mod / 2);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	344
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	345 y = rows / 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	346 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	347 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	348 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	349 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	350
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	351 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	352 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	353 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	354 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	355 ++cr;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	356 ++cb;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	357
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	358 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	359 row1[0] = row1[next_row] = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	360 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	361 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	362 row1++;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	363
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	364 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	365 row1[0] = row1[next_row] = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	366 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	367 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	368 row1++;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	369
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	370
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	371 /* Now, do second row. */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	372
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	373 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	374 row2[0] = row2[next_row] = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	375 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	376 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	377 row2++;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	378
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	379 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	380 row2[0] = row2[next_row] = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	381 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	382 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	383 row2++;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	384 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	385
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	386 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	387 * These values are at the start of the next line, (due
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	388 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	389 * of the line after that.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	390 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	391 lum += cols;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	392 lum2 += cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	393 row1 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	394 row2 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	395 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	396 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	397
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	398 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	399 Color24DitherYV12Mod2X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	400 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	401 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	402 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	403 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	404 unsigned int value;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	405 unsigned char *row1 = out;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	406 const int next_row = (cols * 2 + mod) * 3;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	407 unsigned char row2 = row1 + 2 next_row;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	408 unsigned char *lum2;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	409 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	410 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	411 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	412 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	413 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	414
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	415 lum2 = lum + cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	416
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	417 mod = next_row * 3 + mod * 3;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	418
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	419 y = rows / 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	420 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	421 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	422 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	423 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	424
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	425 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	426 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	427 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	428 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	429 ++cr;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	430 ++cb;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	431
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	432 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	433 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	434 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	435 row1[0 + 0] = row1[3 + 0] = row1[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	436 row1[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	437 row1[0 + 1] = row1[3 + 1] = row1[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	438 row1[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	439 row1[0 + 2] = row1[3 + 2] = row1[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	440 row1[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	441 row1 += 2 * 3;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	442
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	443 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	444 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	445 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	446 row1[0 + 0] = row1[3 + 0] = row1[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	447 row1[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	448 row1[0 + 1] = row1[3 + 1] = row1[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	449 row1[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	450 row1[0 + 2] = row1[3 + 2] = row1[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	451 row1[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	452 row1 += 2 * 3;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	453
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	454
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	455 /* Now, do second row. */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	456
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	457 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	458 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	459 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	460 row2[0 + 0] = row2[3 + 0] = row2[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	461 row2[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	462 row2[0 + 1] = row2[3 + 1] = row2[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	463 row2[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	464 row2[0 + 2] = row2[3 + 2] = row2[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	465 row2[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	466 row2 += 2 * 3;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	467
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	468 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	469 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	470 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	471 row2[0 + 0] = row2[3 + 0] = row2[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	472 row2[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	473 row2[0 + 1] = row2[3 + 1] = row2[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	474 row2[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	475 row2[0 + 2] = row2[3 + 2] = row2[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	476 row2[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	477 row2 += 2 * 3;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	478 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	479
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	480 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	481 * These values are at the start of the next line, (due
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	482 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	483 * of the line after that.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	484 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	485 lum += cols;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	486 lum2 += cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	487 row1 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	488 row2 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	489 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	490 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	491
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	492 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	493 Color32DitherYV12Mod2X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	494 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	495 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	496 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	497 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	498 unsigned int row1 = (unsigned int ) out;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	499 const int next_row = cols * 2 + mod;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	500 unsigned int row2 = row1 + 2 next_row;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	501 unsigned char *lum2;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	502 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	503 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	504 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	505 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	506 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	507
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	508 lum2 = lum + cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	509
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	510 mod = (next_row * 3) + mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	511
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	512 y = rows / 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	513 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	514 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	515 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	516 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	517
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	518 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	519 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	520 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	521 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	522 ++cr;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	523 ++cb;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	524
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	525 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	526 row1[0] = row1[1] = row1[next_row] = row1[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	527 (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	528 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	529 row1 += 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	530
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	531 L = *lum++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	532 row1[0] = row1[1] = row1[next_row] = row1[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	533 (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	534 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	535 row1 += 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	536
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	537
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	538 /* Now, do second row. */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	539
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	540 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	541 row2[0] = row2[1] = row2[next_row] = row2[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	542 (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	543 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	544 row2 += 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	545
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	546 L = *lum2++;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	547 row2[0] = row2[1] = row2[next_row] = row2[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	548 (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	549 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	550 row2 += 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	551 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	552
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	553 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	554 * These values are at the start of the next line, (due
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	555 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	556 * of the line after that.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	557 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	558 lum += cols;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	559 lum2 += cols;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	560 row1 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	561 row2 += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	562 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	563 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	564
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	565 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	566 Color16DitherYUY2Mod1X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	567 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	568 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	569 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	570 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	571 unsigned short *row;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	572 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	573 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	574 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	575 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	576 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	577
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	578 row = (unsigned short *) out;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	579
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	580 y = rows;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	581 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	582 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	583 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	584 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	585
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	586 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	587 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	588 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	589 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	590 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	591 cb += 4;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	592
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	593 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	594 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	595 *row++ = (unsigned short) (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	596 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	597 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	598
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	599 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	600 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	601 *row++ = (unsigned short) (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	602 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	603 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	604
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	605 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	606
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	607 row += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	608 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	609 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	610
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	611 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	612 Color24DitherYUY2Mod1X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	613 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	614 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	615 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	616 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	617 unsigned int value;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	618 unsigned char *row;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	619 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	620 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	621 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	622 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	623 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	624
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	625 row = (unsigned char *) out;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	626 mod *= 3;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	627 y = rows;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	628 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	629 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	630 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	631 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	632
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	633 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	634 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	635 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	636 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	637 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	638 cb += 4;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	639
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	640 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	641 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	642 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	643 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	644 *row++ = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	645 *row++ = (value >> 8) & 0xFF;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	646 *row++ = (value >> 16) & 0xFF;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	647
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	648 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	649 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	650 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	651 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	652 *row++ = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	653 *row++ = (value >> 8) & 0xFF;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	654 *row++ = (value >> 16) & 0xFF;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	655
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	656 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	657 row += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	658 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	659 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	660
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	661 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	662 Color32DitherYUY2Mod1X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	663 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	664 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	665 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	666 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	667 unsigned int *row;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	668 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	669 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	670 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	671 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	672 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	673
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	674 row = (unsigned int *) out;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	675 y = rows;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	676 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	677 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	678 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	679 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	680
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	681 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	682 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	683 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	684 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	685 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	686 cb += 4;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	687
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	688 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	689 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	690 *row++ = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	691 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	692
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	693 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	694 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	695 *row++ = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	696 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	697
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	698
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	699 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	700 row += mod;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	701 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	702 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	703
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	704 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	705 * In this function I make use of a nasty trick. The tables have the lower
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	706 * 16 bits replicated in the upper 16. This means I can write ints and get
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	707 * the horisontal doubling for free (almost).
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	708 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	709 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	710 Color16DitherYUY2Mod2X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	711 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	712 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	713 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	714 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	715 unsigned int row = (unsigned int ) out;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	716 const int next_row = cols + (mod / 2);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	717 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	718 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	719 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	720 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	721 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	722
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	723 y = rows;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	724 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	725 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	726 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	727 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	728
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	729 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	730 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	731 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	732 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	733 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	734 cb += 4;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	735
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	736 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	737 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	738 row[0] = row[next_row] = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	739 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	740 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	741 row++;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	742
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	743 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	744 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	745 row[0] = row[next_row] = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	746 rgb_2_pix[L + crb_g] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	747 rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	748 row++;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	749
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	750 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	751 row += next_row;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	752 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	753 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	754
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	755 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	756 Color24DitherYUY2Mod2X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	757 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	758 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	759 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	760 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	761 unsigned int value;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	762 unsigned char *row = out;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	763 const int next_row = (cols * 2 + mod) * 3;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	764 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	765 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	766 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	767 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	768 int cols_2 = cols / 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	769 y = rows;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	770 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	771 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	772 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	773 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	774
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	775 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	776 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	777 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	778 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	779 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	780 cb += 4;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	781
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	782 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	783 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	784 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	785 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	786 row[0 + 0] = row[3 + 0] = row[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	787 row[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	788 row[0 + 1] = row[3 + 1] = row[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	789 row[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	790 row[0 + 2] = row[3 + 2] = row[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	791 row[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	792 row += 2 * 3;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	793
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	794 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	795 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	796 value = (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	797 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	798 row[0 + 0] = row[3 + 0] = row[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	799 row[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	800 row[0 + 1] = row[3 + 1] = row[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	801 row[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	802 row[0 + 2] = row[3 + 2] = row[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	803 row[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	804 row += 2 * 3;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	805
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	806 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	807 row += next_row;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	808 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	809 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	810
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	811 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	812 Color32DitherYUY2Mod2X(int colortab, Uint32 rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	813 unsigned char lum, unsigned char cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	814 unsigned char cb, unsigned char out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	815 int rows, int cols, int mod)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	816 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	817 unsigned int row = (unsigned int ) out;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	818 const int next_row = cols * 2 + mod;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	819 int x, y;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	820 int cr_r;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	821 int crb_g;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	822 int cb_b;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	823 int cols_2 = cols / 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	824 mod += mod;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	825 y = rows;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	826 while (y--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	827 x = cols_2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	828 while (x--) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	829 register int L;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	830
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	831 cr_r = 0 * 768 + 256 + colortab[cr + 0 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	832 crb_g = 1 * 768 + 256 + colortab[cr + 1 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	833 + colortab[cb + 2 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	834 cb_b = 2 * 768 + 256 + colortab[cb + 3 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	835 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	836 cb += 4;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	837
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	838 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	839 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	840 row[0] = row[1] = row[next_row] = row[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	841 (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	842 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	843 row += 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	844
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	845 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	846 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	847 row[0] = row[1] = row[next_row] = row[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	848 (rgb_2_pix[L + cr_r] \|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	849 rgb_2_pix[L + crb_g] \| rgb_2_pix[L + cb_b]);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	850 row += 2;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	851
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	852
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	853 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	854
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	855 row += next_row;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	856 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	857 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	858
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	859 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	860 * How many 1 bits are there in the Uint32.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	861 * Low performance, do not call often.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	862 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	863 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	864 number_of_bits_set(Uint32 a)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	865 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	866 if (!a)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	867 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	868 if (a & 1)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	869 return 1 + number_of_bits_set(a >> 1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	870 return (number_of_bits_set(a >> 1));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	871 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	872
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	873 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	874 * How many 0 bits are there at least significant end of Uint32.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	875 * Low performance, do not call often.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	876 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	877 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	878 free_bits_at_bottom(Uint32 a)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	879 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	880 /* assume char is 8 bits */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	881 if (!a)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	882 return sizeof(Uint32) * 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	883 if (((Sint32) a) & 1l)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	884 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	885 return 1 + free_bits_at_bottom(a >> 1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	886 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	887
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	888 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	889 SDL_SW_SetupYUVDisplay(SDL_SW_YUVTexture * swdata, Uint32 target_format)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	890 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	891 Uint32 *r_2_pix_alloc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	892 Uint32 *g_2_pix_alloc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	893 Uint32 *b_2_pix_alloc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	894 int i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	895 int bpp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	896 Uint32 Rmask, Gmask, Bmask, Amask;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	897
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	898 if (!SDL_PixelFormatEnumToMasks
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	899 (target_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask) \|\| bpp < 15) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	900 SDL_SetError("Unsupported YUV destination format");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	901 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	902 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	903
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	904 swdata->target_format = target_format;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	905 r_2_pix_alloc = &swdata->rgb_2_pix[0 * 768];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	906 g_2_pix_alloc = &swdata->rgb_2_pix[1 * 768];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	907 b_2_pix_alloc = &swdata->rgb_2_pix[2 * 768];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	908
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	909 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	910 * Set up entries 0-255 in rgb-to-pixel value tables.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	911 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	912 for (i = 0; i < 256; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	913 r_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(Rmask));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	914 r_2_pix_alloc[i + 256] <<= free_bits_at_bottom(Rmask);
2795 9e7ce3069096 Set the alpha mask fixing software rendering in OpenGL Sam Lantinga <slouken@libsdl.org> parents: 2786 diff changeset	915 r_2_pix_alloc[i + 256] \|= Amask;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	916 g_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(Gmask));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	917 g_2_pix_alloc[i + 256] <<= free_bits_at_bottom(Gmask);
2795 9e7ce3069096 Set the alpha mask fixing software rendering in OpenGL Sam Lantinga <slouken@libsdl.org> parents: 2786 diff changeset	918 g_2_pix_alloc[i + 256] \|= Amask;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	919 b_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(Bmask));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	920 b_2_pix_alloc[i + 256] <<= free_bits_at_bottom(Bmask);
2795 9e7ce3069096 Set the alpha mask fixing software rendering in OpenGL Sam Lantinga <slouken@libsdl.org> parents: 2786 diff changeset	921 b_2_pix_alloc[i + 256] \|= Amask;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	922 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	923
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	924 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	925 * If we have 16-bit output depth, then we double the value
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	926 * in the top word. This means that we can write out both
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	927 * pixels in the pixel doubling mode with one op. It is
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	928 * harmless in the normal case as storing a 32-bit value
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	929 * through a short pointer will lose the top bits anyway.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	930 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	931 if (SDL_BYTESPERPIXEL(target_format) == 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	932 for (i = 0; i < 256; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	933 r_2_pix_alloc[i + 256] \|= (r_2_pix_alloc[i + 256]) << 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	934 g_2_pix_alloc[i + 256] \|= (g_2_pix_alloc[i + 256]) << 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	935 b_2_pix_alloc[i + 256] \|= (b_2_pix_alloc[i + 256]) << 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	936 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	937 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	938
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	939 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	940 * Spread out the values we have to the rest of the array so that
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	941 * we do not need to check for overflow.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	942 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	943 for (i = 0; i < 256; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	944 r_2_pix_alloc[i] = r_2_pix_alloc[256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	945 r_2_pix_alloc[i + 512] = r_2_pix_alloc[511];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	946 g_2_pix_alloc[i] = g_2_pix_alloc[256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	947 g_2_pix_alloc[i + 512] = g_2_pix_alloc[511];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	948 b_2_pix_alloc[i] = b_2_pix_alloc[256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	949 b_2_pix_alloc[i + 512] = b_2_pix_alloc[511];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	950 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	951
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	952 /* You have chosen wisely... */
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	953 switch (swdata->format) {
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	954 case SDL_PIXELFORMAT_YV12:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	955 case SDL_PIXELFORMAT_IYUV:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	956 if (SDL_BYTESPERPIXEL(target_format) == 2) {
2197 2ff40f30af31 Merged r3261:3262 from branches/SDL-1.2: MMX/YUV with __OPTIMIZE__. Ryan C. Gordon <icculus@icculus.org> parents: 2172 diff changeset	957 #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	958 /* inline assembly functions */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	959 if (SDL_HasMMX() && (Rmask == 0xF800) &&
2172 bef26cfc8f79 Fixed compiling YUV code Sam Lantinga <slouken@libsdl.org> parents: 2168 diff changeset	960 (Gmask == 0x07E0) && (Bmask == 0x001F)
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	961 && (swdata->w & 15) == 0) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	962 /printf("Using MMX 16-bit 565 dither\n");/
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	963 swdata->Display1X = Color565DitherYV12MMX1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	964 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	965 /printf("Using C 16-bit dither\n");/
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	966 swdata->Display1X = Color16DitherYV12Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	967 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	968 #else
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	969 swdata->Display1X = Color16DitherYV12Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	970 #endif
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	971 swdata->Display2X = Color16DitherYV12Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	972 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	973 if (SDL_BYTESPERPIXEL(target_format) == 3) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	974 swdata->Display1X = Color24DitherYV12Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	975 swdata->Display2X = Color24DitherYV12Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	976 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	977 if (SDL_BYTESPERPIXEL(target_format) == 4) {
2197 2ff40f30af31 Merged r3261:3262 from branches/SDL-1.2: MMX/YUV with __OPTIMIZE__. Ryan C. Gordon <icculus@icculus.org> parents: 2172 diff changeset	978 #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	979 /* inline assembly functions */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	980 if (SDL_HasMMX() && (Rmask == 0x00FF0000) &&
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	981 (Gmask == 0x0000FF00) &&
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	982 (Bmask == 0x000000FF) && (swdata->w & 15) == 0) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	983 /printf("Using MMX 32-bit dither\n");/
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	984 swdata->Display1X = ColorRGBDitherYV12MMX1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	985 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	986 /printf("Using C 32-bit dither\n");/
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	987 swdata->Display1X = Color32DitherYV12Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	988 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	989 #else
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	990 swdata->Display1X = Color32DitherYV12Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	991 #endif
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	992 swdata->Display2X = Color32DitherYV12Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	993 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	994 break;
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	995 case SDL_PIXELFORMAT_YUY2:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	996 case SDL_PIXELFORMAT_UYVY:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	997 case SDL_PIXELFORMAT_YVYU:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	998 if (SDL_BYTESPERPIXEL(target_format) == 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	999 swdata->Display1X = Color16DitherYUY2Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1000 swdata->Display2X = Color16DitherYUY2Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1001 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1002 if (SDL_BYTESPERPIXEL(target_format) == 3) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1003 swdata->Display1X = Color24DitherYUY2Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1004 swdata->Display2X = Color24DitherYUY2Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1005 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1006 if (SDL_BYTESPERPIXEL(target_format) == 4) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1007 swdata->Display1X = Color32DitherYUY2Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1008 swdata->Display2X = Color32DitherYUY2Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1009 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1010 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1011 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1012 /* We should never get here (caught above) */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1013 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1014 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1015
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1016 if (swdata->display) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1017 SDL_FreeSurface(swdata->display);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1018 swdata->display = NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1019 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1020 return 0;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1021 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1022
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1023 SDL_SW_YUVTexture *
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1024 SDL_SW_CreateYUVTexture(Uint32 format, int w, int h)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1025 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1026 SDL_SW_YUVTexture *swdata;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1027 int *Cr_r_tab;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1028 int *Cr_g_tab;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1029 int *Cb_g_tab;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1030 int *Cb_b_tab;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1031 int i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1032 int CR, CB;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1033
1920 8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	1034 swdata = (SDL_SW_YUVTexture ) SDL_calloc(1, sizeof(swdata));
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1035 if (!swdata) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1036 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1037 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1038 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1039
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1040 switch (format) {
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1041 case SDL_PIXELFORMAT_YV12:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1042 case SDL_PIXELFORMAT_IYUV:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1043 case SDL_PIXELFORMAT_YUY2:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1044 case SDL_PIXELFORMAT_UYVY:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1045 case SDL_PIXELFORMAT_YVYU:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1046 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1047 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1048 SDL_SetError("Unsupported YUV format");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1049 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1050 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1051
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1052 swdata->format = format;
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1053 swdata->target_format = SDL_PIXELFORMAT_UNKNOWN;
2786 6bacfecbf27e indent Sam Lantinga <slouken@libsdl.org> parents: 2781 diff changeset	1054 swdata->w = w;
6bacfecbf27e indent Sam Lantinga <slouken@libsdl.org> parents: 2781 diff changeset	1055 swdata->h = h;
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1056 swdata->pixels = (Uint8 ) SDL_malloc(w h * 2);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1057 swdata->colortab = (int ) SDL_malloc(4 256 * sizeof(int));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1058 swdata->rgb_2_pix = (Uint32 ) SDL_malloc(3 768 * sizeof(Uint32));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1059 if (!swdata->pixels \|\| !swdata->colortab \|\| !swdata->rgb_2_pix) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1060 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1061 SDL_SW_DestroyYUVTexture(swdata);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1062 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1063 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1064
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1065 /* Generate the tables for the display surface */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1066 Cr_r_tab = &swdata->colortab[0 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1067 Cr_g_tab = &swdata->colortab[1 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1068 Cb_g_tab = &swdata->colortab[2 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1069 Cb_b_tab = &swdata->colortab[3 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1070 for (i = 0; i < 256; i++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1071 /* Gamma correction (luminescence table) and chroma correction
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1072 would be done here. See the Berkeley mpeg_play sources.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1073 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1074 CB = CR = (i - 128);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1075 Cr_r_tab[i] = (int) ((0.419 / 0.299) * CR);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1076 Cr_g_tab[i] = (int) (-(0.299 / 0.419) * CR);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1077 Cb_g_tab[i] = (int) (-(0.114 / 0.331) * CB);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1078 Cb_b_tab[i] = (int) ((0.587 / 0.331) * CB);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1079 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1080
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1081 /* Find the pitch and offset values for the overlay */
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1082 switch (format) {
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1083 case SDL_PIXELFORMAT_YV12:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1084 case SDL_PIXELFORMAT_IYUV:
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1085 swdata->pitches[0] = w;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1086 swdata->pitches[1] = swdata->pitches[0] / 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1087 swdata->pitches[2] = swdata->pitches[0] / 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1088 swdata->planes[0] = swdata->pixels;
2786 6bacfecbf27e indent Sam Lantinga <slouken@libsdl.org> parents: 2781 diff changeset	1089 swdata->planes[1] = swdata->planes[0] + swdata->pitches[0] * h;
6bacfecbf27e indent Sam Lantinga <slouken@libsdl.org> parents: 2781 diff changeset	1090 swdata->planes[2] = swdata->planes[1] + swdata->pitches[1] * h / 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1091 break;
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1092 case SDL_PIXELFORMAT_YUY2:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1093 case SDL_PIXELFORMAT_UYVY:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1094 case SDL_PIXELFORMAT_YVYU:
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1095 swdata->pitches[0] = w * 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1096 swdata->planes[0] = swdata->pixels;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1097 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1098 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1099 /* We should never get here (caught above) */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1100 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1101 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1102
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1103 /* We're all done.. */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1104 return (swdata);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1105 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1106
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1107 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1108 SDL_SW_QueryYUVTexturePixels(SDL_SW_YUVTexture * swdata, void **pixels,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1109 int *pitch)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1110 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1111 *pixels = swdata->planes[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1112 *pitch = swdata->pitches[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1113 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1114 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1115
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1116 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1117 SDL_SW_UpdateYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1118 const void *pixels, int pitch)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1119 {
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1120 switch (swdata->format) {
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1121 case SDL_PIXELFORMAT_YV12:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1122 case SDL_PIXELFORMAT_IYUV:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1123 if (rect
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1124 && (rect->x != 0 \|\| rect->y != 0 \|\| rect->w != swdata->w
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1125 \|\| rect->h != swdata->h)) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1126 SDL_SetError
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1127 ("YV12 and IYUV textures only support full surface updates");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1128 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1129 }
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1130 SDL_memcpy(swdata->pixels, pixels, swdata->h * swdata->w * 2);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1131 break;
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1132 case SDL_PIXELFORMAT_YUY2:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1133 case SDL_PIXELFORMAT_UYVY:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1134 case SDL_PIXELFORMAT_YVYU:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1135 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1136 Uint8 src, dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1137 int row;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1138 size_t length;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1139
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1140 src = (Uint8 *) pixels;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1141 dst =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1142 swdata->planes[0] + rect->y * swdata->pitches[0] +
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1143 rect->x * 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1144 length = rect->w * 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1145 for (row = 0; row < rect->h; ++row) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1146 SDL_memcpy(dst, src, length);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1147 src += pitch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1148 dst += swdata->pitches[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1149 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1150 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1151 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1152 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1153 return 0;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1154 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1155
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1156 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1157 SDL_SW_LockYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1158 int markDirty, void *pixels, int pitch)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1159 {
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1160 switch (swdata->format) {
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1161 case SDL_PIXELFORMAT_YV12:
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1162 case SDL_PIXELFORMAT_IYUV:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1163 if (rect
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1164 && (rect->x != 0 \|\| rect->y != 0 \|\| rect->w != swdata->w
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1165 \|\| rect->h != swdata->h)) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1166 SDL_SetError
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1167 ("YV12 and IYUV textures only support full surface locks");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1168 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1169 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1170 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1171 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1172
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1173 pixels = swdata->planes[0] + rect->y swdata->pitches[0] + rect->x * 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1174 *pitch = swdata->pitches[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1175 return 0;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1176 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1177
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1178 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1179 SDL_SW_UnlockYUVTexture(SDL_SW_YUVTexture * swdata)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1180 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1181 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1182
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1183 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1184 SDL_SW_CopyYUVToRGB(SDL_SW_YUVTexture * swdata, const SDL_Rect * srcrect,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1185 Uint32 target_format, int w, int h, void *pixels,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1186 int pitch)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1187 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1188 int stretch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1189 int scale_2x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1190 Uint8 lum, Cr, *Cb;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1191 int mod;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1192
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1193 /* Make sure we're set up to display in the desired format */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1194 if (target_format != swdata->target_format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1195 if (SDL_SW_SetupYUVDisplay(swdata, target_format) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1196 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1197 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1198 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1199
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1200 stretch = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1201 scale_2x = 0;
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1202 if (srcrect->x \|\| srcrect->y \|\| srcrect->w < swdata->w
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1203 \|\| srcrect->h < swdata->h) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1204 /* The source rectangle has been clipped.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1205 Using a scratch surface is easier than adding clipped
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1206 source support to all the blitters, plus that would
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1207 slow them down in the general unclipped case.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1208 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1209 stretch = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1210 } else if ((srcrect->w != w) \|\| (srcrect->h != h)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1211 if ((w == 2 * srcrect->w) && (h == 2 * srcrect->h)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1212 scale_2x = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1213 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1214 stretch = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1215 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1216 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1217 if (stretch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1218 int bpp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1219 Uint32 Rmask, Gmask, Bmask, Amask;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1220
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1221 if (swdata->display) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1222 swdata->display->w = w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1223 swdata->display->h = h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1224 swdata->display->pixels = pixels;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1225 swdata->display->pitch = pitch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1226 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1227 /* This must have succeeded in SDL_SW_SetupYUVDisplay() earlier */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1228 SDL_PixelFormatEnumToMasks(target_format, &bpp, &Rmask, &Gmask,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1229 &Bmask, &Amask);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1230 swdata->display =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1231 SDL_CreateRGBSurfaceFrom(pixels, w, h, bpp, pitch, Rmask,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1232 Gmask, Bmask, Amask);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1233 if (!swdata->display) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1234 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1235 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1236 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1237 if (!swdata->stretch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1238 /* This must have succeeded in SDL_SW_SetupYUVDisplay() earlier */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1239 SDL_PixelFormatEnumToMasks(target_format, &bpp, &Rmask, &Gmask,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1240 &Bmask, &Amask);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1241 swdata->stretch =
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1242 SDL_CreateRGBSurface(0, swdata->w, swdata->h, bpp, Rmask,
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1243 Gmask, Bmask, Amask);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1244 if (!swdata->stretch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1245 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1246 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1247 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1248 pixels = swdata->stretch->pixels;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1249 pitch = swdata->stretch->pitch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1250 }
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1251 switch (swdata->format) {
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1252 case SDL_PIXELFORMAT_YV12:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1253 lum = swdata->planes[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1254 Cr = swdata->planes[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1255 Cb = swdata->planes[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1256 break;
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1257 case SDL_PIXELFORMAT_IYUV:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1258 lum = swdata->planes[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1259 Cr = swdata->planes[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1260 Cb = swdata->planes[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1261 break;
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1262 case SDL_PIXELFORMAT_YUY2:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1263 lum = swdata->planes[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1264 Cr = lum + 3;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1265 Cb = lum + 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1266 break;
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1267 case SDL_PIXELFORMAT_UYVY:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1268 lum = swdata->planes[0] + 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1269 Cr = lum + 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1270 Cb = lum - 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1271 break;
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1920 diff changeset	1272 case SDL_PIXELFORMAT_YVYU:
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1273 lum = swdata->planes[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1274 Cr = lum + 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1275 Cb = lum + 3;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1276 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1277 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1278 SDL_SetError("Unsupported YUV format in copy");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1279 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1280 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1281 mod = (pitch / SDL_BYTESPERPIXEL(target_format));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1282
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1283 if (scale_2x) {
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1284 mod -= (swdata->w * 2);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1285 swdata->Display2X(swdata->colortab, swdata->rgb_2_pix,
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1286 lum, Cr, Cb, pixels, swdata->h, swdata->w, mod);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1287 } else {
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1288 mod -= swdata->w;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1289 swdata->Display1X(swdata->colortab, swdata->rgb_2_pix,
2781 5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available. Sam Lantinga <slouken@libsdl.org> parents: 2197 diff changeset	1290 lum, Cr, Cb, pixels, swdata->h, swdata->w, mod);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1291 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1292 if (stretch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1293 SDL_Rect rect = *srcrect;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1294 SDL_SoftStretch(swdata->stretch, &rect, swdata->display, NULL);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1295 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1296 return 0;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1297 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1298
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1299 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1300 SDL_SW_DestroyYUVTexture(SDL_SW_YUVTexture * swdata)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1301 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1302 if (swdata) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1303 if (swdata->pixels) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1304 SDL_free(swdata->pixels);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1305 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1306 if (swdata->colortab) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1307 SDL_free(swdata->colortab);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1308 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1309 if (swdata->rgb_2_pix) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1310 SDL_free(swdata->rgb_2_pix);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1311 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1312 if (swdata->stretch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1313 SDL_FreeSurface(swdata->stretch);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1314 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1315 if (swdata->display) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1316 SDL_FreeSurface(swdata->display);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1317 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1318 SDL_free(swdata);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1319 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1320 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1321
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1644 diff changeset	1322 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/video/SDL_yuv_sw.c @ 3473:7bdc10624cba