Mercurial > sdl-ios-xcode
view src/video/SDL_yuv_sw.c @ 3168:6338b7f2d024
Hi,
I have prepared a set of patches to readd WindowsCE support to SDL 1.3.
I've created a new GAPI/Rawframebuffer and a DirectDraw renderer.
Both renderers are work in progress and there are several unimplemented
cases. (Notably
RenderLine/RenderPoint/RenderFill/QueryTexturePixels/UpdateTexture and
texture blending )
Nevertheless I am successfully using these renderers together with the
SDL software renderer. (On most devices the SDL software renderer will
be much faster as there are only badly optimized vendor drivers available)
I send these patches now in this unpolished state because there seems to
be some interest in win ce and someone has to start supporting SDL 1.3
Now on to the patches:
wince_events_window_fixes.patch
fixes some wince incompatibilities and adds fullscreen support via
SHFullScreen. NOTE: This patch shouldn't have any side effects on
Windows, but I have NOT tested it on Windows, so please double-check.
This patch doesn't dependent on the following ones.
wince_renderers_system.patch
This patch does all necessary modifications to the SDL system.
- it adds the renderers to the configure system
- it adds the renderers to win32video
SDL_ceddrawrender.c
SDL_ceddrawrender.h
SDL_gapirender_c.h
SDL_gapirender.c
SDL_gapirender.h
these files add the new render drivers and should be placed in
src/video/win32
Some notes to people who want to test this:
- I have only compiled sdl with ming32ce, so the VisualC files are not
up to date
- As mingw32ce has no ddraw.h this file must be taken from the MS SDK
and modified to work with gcc
- I had to modify line 2611 in configure.in to
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lcoredll -lcommctrl -lmmtimer
-Wl,--image-base -Wl,0x10000"
otherwise GetCPinfo wouldn't link. If someone knows whats causing this
I'd be happy to hear about it.
It would be great if these patches could make their way into SVN as this
would make collaboration much much easier.
I'm out of office for the next week and therefore will be unavailable
via email.
Regards
Stefan
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 07 Jun 2009 02:44:46 +0000 |
| parents | 99210400e8b9 |
| children | 0d8d1f870964 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" /* This is the software implementation of the YUV texture support */ /* This code was derived from code carrying the following copyright notices: * Copyright (c) 1995 The Regents of the University of California. * All rights reserved. * * Permission to use, copy, modify, and distribute this software and its * documentation for any purpose, without fee, and without written agreement is * hereby granted, provided that the above copyright notice and the following * two paragraphs appear in all copies of this software. * * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. * Copyright (c) 1995 Erik Corry * All rights reserved. * * Permission to use, copy, modify, and distribute this software and its * documentation for any purpose, without fee, and without written agreement is * hereby granted, provided that the above copyright notice and the following * two paragraphs appear in all copies of this software. * * IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * * ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" * BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, * UPDATES, ENHANCEMENTS, OR MODIFICATIONS. * Portions of this software Copyright (c) 1995 Brown University. * All rights reserved. * * Permission to use, copy, modify, and distribute this software and its * documentation for any purpose, without fee, and without written agreement * is hereby granted, provided that the above copyright notice and the * following two paragraphs appear in all copies of this software. * * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. */ #include "SDL_video.h" #include "SDL_cpuinfo.h" #include "SDL_yuv_sw_c.h" struct SDL_SW_YUVTexture { Uint32 format; Uint32 target_format; int w, h; Uint8 *pixels; int *colortab; Uint32 *rgb_2_pix; void (*Display1X) (int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod); void (*Display2X) (int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod); /* These are just so we don't have to allocate them separately */ Uint16 pitches[3]; Uint8 *planes[3]; /* This is a temporary surface in case we have to stretch copy */ SDL_Surface *stretch; SDL_Surface *display; }; /* The colorspace conversion functions */ #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES extern void Color565DitherYV12MMX1X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod); extern void ColorRGBDitherYV12MMX1X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod); #endif static void Color16DitherYV12Mod1X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned short *row1; unsigned short *row2; unsigned char *lum2; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; row1 = (unsigned short *) out; row2 = row1 + cols + mod; lum2 = lum + cols; mod += cols + mod; y = rows / 2; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; ++cr; ++cb; L = *lum++; *row1++ = (unsigned short) (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); L = *lum++; *row1++ = (unsigned short) (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); /* Now, do second row. */ L = *lum2++; *row2++ = (unsigned short) (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); L = *lum2++; *row2++ = (unsigned short) (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); } /* * These values are at the start of the next line, (due * to the ++'s above),but they need to be at the start * of the line after that. */ lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } static void Color24DitherYV12Mod1X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned int value; unsigned char *row1; unsigned char *row2; unsigned char *lum2; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; row1 = out; row2 = row1 + cols * 3 + mod * 3; lum2 = lum + cols; mod += cols + mod; mod *= 3; y = rows / 2; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; ++cr; ++cb; L = *lum++; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); *row1++ = (value) & 0xFF; *row1++ = (value >> 8) & 0xFF; *row1++ = (value >> 16) & 0xFF; L = *lum++; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); *row1++ = (value) & 0xFF; *row1++ = (value >> 8) & 0xFF; *row1++ = (value >> 16) & 0xFF; /* Now, do second row. */ L = *lum2++; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); *row2++ = (value) & 0xFF; *row2++ = (value >> 8) & 0xFF; *row2++ = (value >> 16) & 0xFF; L = *lum2++; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); *row2++ = (value) & 0xFF; *row2++ = (value >> 8) & 0xFF; *row2++ = (value >> 16) & 0xFF; } /* * These values are at the start of the next line, (due * to the ++'s above),but they need to be at the start * of the line after that. */ lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } static void Color32DitherYV12Mod1X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned int *row1; unsigned int *row2; unsigned char *lum2; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; row1 = (unsigned int *) out; row2 = row1 + cols + mod; lum2 = lum + cols; mod += cols + mod; y = rows / 2; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; ++cr; ++cb; L = *lum++; *row1++ = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); L = *lum++; *row1++ = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); /* Now, do second row. */ L = *lum2++; *row2++ = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); L = *lum2++; *row2++ = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); } /* * These values are at the start of the next line, (due * to the ++'s above),but they need to be at the start * of the line after that. */ lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } /* * In this function I make use of a nasty trick. The tables have the lower * 16 bits replicated in the upper 16. This means I can write ints and get * the horisontal doubling for free (almost). */ static void Color16DitherYV12Mod2X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned int *row1 = (unsigned int *) out; const int next_row = cols + (mod / 2); unsigned int *row2 = row1 + 2 * next_row; unsigned char *lum2; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; lum2 = lum + cols; mod = (next_row * 3) + (mod / 2); y = rows / 2; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; ++cr; ++cb; L = *lum++; row1[0] = row1[next_row] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row1++; L = *lum++; row1[0] = row1[next_row] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row1++; /* Now, do second row. */ L = *lum2++; row2[0] = row2[next_row] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row2++; L = *lum2++; row2[0] = row2[next_row] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row2++; } /* * These values are at the start of the next line, (due * to the ++'s above),but they need to be at the start * of the line after that. */ lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } static void Color24DitherYV12Mod2X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned int value; unsigned char *row1 = out; const int next_row = (cols * 2 + mod) * 3; unsigned char *row2 = row1 + 2 * next_row; unsigned char *lum2; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; lum2 = lum + cols; mod = next_row * 3 + mod * 3; y = rows / 2; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; ++cr; ++cb; L = *lum++; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row1[0 + 0] = row1[3 + 0] = row1[next_row + 0] = row1[next_row + 3 + 0] = (value) & 0xFF; row1[0 + 1] = row1[3 + 1] = row1[next_row + 1] = row1[next_row + 3 + 1] = (value >> 8) & 0xFF; row1[0 + 2] = row1[3 + 2] = row1[next_row + 2] = row1[next_row + 3 + 2] = (value >> 16) & 0xFF; row1 += 2 * 3; L = *lum++; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row1[0 + 0] = row1[3 + 0] = row1[next_row + 0] = row1[next_row + 3 + 0] = (value) & 0xFF; row1[0 + 1] = row1[3 + 1] = row1[next_row + 1] = row1[next_row + 3 + 1] = (value >> 8) & 0xFF; row1[0 + 2] = row1[3 + 2] = row1[next_row + 2] = row1[next_row + 3 + 2] = (value >> 16) & 0xFF; row1 += 2 * 3; /* Now, do second row. */ L = *lum2++; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row2[0 + 0] = row2[3 + 0] = row2[next_row + 0] = row2[next_row + 3 + 0] = (value) & 0xFF; row2[0 + 1] = row2[3 + 1] = row2[next_row + 1] = row2[next_row + 3 + 1] = (value >> 8) & 0xFF; row2[0 + 2] = row2[3 + 2] = row2[next_row + 2] = row2[next_row + 3 + 2] = (value >> 16) & 0xFF; row2 += 2 * 3; L = *lum2++; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row2[0 + 0] = row2[3 + 0] = row2[next_row + 0] = row2[next_row + 3 + 0] = (value) & 0xFF; row2[0 + 1] = row2[3 + 1] = row2[next_row + 1] = row2[next_row + 3 + 1] = (value >> 8) & 0xFF; row2[0 + 2] = row2[3 + 2] = row2[next_row + 2] = row2[next_row + 3 + 2] = (value >> 16) & 0xFF; row2 += 2 * 3; } /* * These values are at the start of the next line, (due * to the ++'s above),but they need to be at the start * of the line after that. */ lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } static void Color32DitherYV12Mod2X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned int *row1 = (unsigned int *) out; const int next_row = cols * 2 + mod; unsigned int *row2 = row1 + 2 * next_row; unsigned char *lum2; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; lum2 = lum + cols; mod = (next_row * 3) + mod; y = rows / 2; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; ++cr; ++cb; L = *lum++; row1[0] = row1[1] = row1[next_row] = row1[next_row + 1] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row1 += 2; L = *lum++; row1[0] = row1[1] = row1[next_row] = row1[next_row + 1] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row1 += 2; /* Now, do second row. */ L = *lum2++; row2[0] = row2[1] = row2[next_row] = row2[next_row + 1] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row2 += 2; L = *lum2++; row2[0] = row2[1] = row2[next_row] = row2[next_row + 1] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row2 += 2; } /* * These values are at the start of the next line, (due * to the ++'s above),but they need to be at the start * of the line after that. */ lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } static void Color16DitherYUY2Mod1X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned short *row; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; row = (unsigned short *) out; y = rows; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; cr += 4; cb += 4; L = *lum; lum += 2; *row++ = (unsigned short) (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); L = *lum; lum += 2; *row++ = (unsigned short) (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); } row += mod; } } static void Color24DitherYUY2Mod1X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned int value; unsigned char *row; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; row = (unsigned char *) out; mod *= 3; y = rows; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; cr += 4; cb += 4; L = *lum; lum += 2; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); *row++ = (value) & 0xFF; *row++ = (value >> 8) & 0xFF; *row++ = (value >> 16) & 0xFF; L = *lum; lum += 2; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); *row++ = (value) & 0xFF; *row++ = (value >> 8) & 0xFF; *row++ = (value >> 16) & 0xFF; } row += mod; } } static void Color32DitherYUY2Mod1X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned int *row; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; row = (unsigned int *) out; y = rows; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; cr += 4; cb += 4; L = *lum; lum += 2; *row++ = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); L = *lum; lum += 2; *row++ = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); } row += mod; } } /* * In this function I make use of a nasty trick. The tables have the lower * 16 bits replicated in the upper 16. This means I can write ints and get * the horisontal doubling for free (almost). */ static void Color16DitherYUY2Mod2X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned int *row = (unsigned int *) out; const int next_row = cols + (mod / 2); int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; y = rows; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; cr += 4; cb += 4; L = *lum; lum += 2; row[0] = row[next_row] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row++; L = *lum; lum += 2; row[0] = row[next_row] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row++; } row += next_row; } } static void Color24DitherYUY2Mod2X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned int value; unsigned char *row = out; const int next_row = (cols * 2 + mod) * 3; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; y = rows; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; cr += 4; cb += 4; L = *lum; lum += 2; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row[0 + 0] = row[3 + 0] = row[next_row + 0] = row[next_row + 3 + 0] = (value) & 0xFF; row[0 + 1] = row[3 + 1] = row[next_row + 1] = row[next_row + 3 + 1] = (value >> 8) & 0xFF; row[0 + 2] = row[3 + 2] = row[next_row + 2] = row[next_row + 3 + 2] = (value >> 16) & 0xFF; row += 2 * 3; L = *lum; lum += 2; value = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row[0 + 0] = row[3 + 0] = row[next_row + 0] = row[next_row + 3 + 0] = (value) & 0xFF; row[0 + 1] = row[3 + 1] = row[next_row + 1] = row[next_row + 3 + 1] = (value >> 8) & 0xFF; row[0 + 2] = row[3 + 2] = row[next_row + 2] = row[next_row + 3 + 2] = (value >> 16) & 0xFF; row += 2 * 3; } row += next_row; } } static void Color32DitherYUY2Mod2X(int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, int rows, int cols, int mod) { unsigned int *row = (unsigned int *) out; const int next_row = cols * 2 + mod; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; mod += mod; y = rows; while (y--) { x = cols_2; while (x--) { register int L; cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + colortab[*cb + 2 * 256]; cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; cr += 4; cb += 4; L = *lum; lum += 2; row[0] = row[1] = row[next_row] = row[next_row + 1] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row += 2; L = *lum; lum += 2; row[0] = row[1] = row[next_row] = row[next_row + 1] = (rgb_2_pix[L + cr_r] | rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row += 2; } row += next_row; } } /* * How many 1 bits are there in the Uint32. * Low performance, do not call often. */ static int number_of_bits_set(Uint32 a) { if (!a) return 0; if (a & 1) return 1 + number_of_bits_set(a >> 1); return (number_of_bits_set(a >> 1)); } /* * How many 0 bits are there at least significant end of Uint32. * Low performance, do not call often. */ static int free_bits_at_bottom(Uint32 a) { /* assume char is 8 bits */ if (!a) return sizeof(Uint32) * 8; if (((Sint32) a) & 1l) return 0; return 1 + free_bits_at_bottom(a >> 1); } static int SDL_SW_SetupYUVDisplay(SDL_SW_YUVTexture * swdata, Uint32 target_format) { Uint32 *r_2_pix_alloc; Uint32 *g_2_pix_alloc; Uint32 *b_2_pix_alloc; int i; int bpp; Uint32 Rmask, Gmask, Bmask, Amask; if (!SDL_PixelFormatEnumToMasks (target_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask) || bpp < 15) { SDL_SetError("Unsupported YUV destination format"); return -1; } swdata->target_format = target_format; r_2_pix_alloc = &swdata->rgb_2_pix[0 * 768]; g_2_pix_alloc = &swdata->rgb_2_pix[1 * 768]; b_2_pix_alloc = &swdata->rgb_2_pix[2 * 768]; /* * Set up entries 0-255 in rgb-to-pixel value tables. */ for (i = 0; i < 256; ++i) { r_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(Rmask)); r_2_pix_alloc[i + 256] <<= free_bits_at_bottom(Rmask); r_2_pix_alloc[i + 256] |= Amask; g_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(Gmask)); g_2_pix_alloc[i + 256] <<= free_bits_at_bottom(Gmask); g_2_pix_alloc[i + 256] |= Amask; b_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(Bmask)); b_2_pix_alloc[i + 256] <<= free_bits_at_bottom(Bmask); b_2_pix_alloc[i + 256] |= Amask; } /* * If we have 16-bit output depth, then we double the value * in the top word. This means that we can write out both * pixels in the pixel doubling mode with one op. It is * harmless in the normal case as storing a 32-bit value * through a short pointer will lose the top bits anyway. */ if (SDL_BYTESPERPIXEL(target_format) == 2) { for (i = 0; i < 256; ++i) { r_2_pix_alloc[i + 256] |= (r_2_pix_alloc[i + 256]) << 16; g_2_pix_alloc[i + 256] |= (g_2_pix_alloc[i + 256]) << 16; b_2_pix_alloc[i + 256] |= (b_2_pix_alloc[i + 256]) << 16; } } /* * Spread out the values we have to the rest of the array so that * we do not need to check for overflow. */ for (i = 0; i < 256; ++i) { r_2_pix_alloc[i] = r_2_pix_alloc[256]; r_2_pix_alloc[i + 512] = r_2_pix_alloc[511]; g_2_pix_alloc[i] = g_2_pix_alloc[256]; g_2_pix_alloc[i + 512] = g_2_pix_alloc[511]; b_2_pix_alloc[i] = b_2_pix_alloc[256]; b_2_pix_alloc[i + 512] = b_2_pix_alloc[511]; } /* You have chosen wisely... */ switch (swdata->format) { case SDL_PIXELFORMAT_YV12: case SDL_PIXELFORMAT_IYUV: if (SDL_BYTESPERPIXEL(target_format) == 2) { #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES /* inline assembly functions */ if (SDL_HasMMX() && (Rmask == 0xF800) && (Gmask == 0x07E0) && (Bmask == 0x001F) && (swdata->w & 15) == 0) { /*printf("Using MMX 16-bit 565 dither\n");*/ swdata->Display1X = Color565DitherYV12MMX1X; } else { /*printf("Using C 16-bit dither\n");*/ swdata->Display1X = Color16DitherYV12Mod1X; } #else swdata->Display1X = Color16DitherYV12Mod1X; #endif swdata->Display2X = Color16DitherYV12Mod2X; } if (SDL_BYTESPERPIXEL(target_format) == 3) { swdata->Display1X = Color24DitherYV12Mod1X; swdata->Display2X = Color24DitherYV12Mod2X; } if (SDL_BYTESPERPIXEL(target_format) == 4) { #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES /* inline assembly functions */ if (SDL_HasMMX() && (Rmask == 0x00FF0000) && (Gmask == 0x0000FF00) && (Bmask == 0x000000FF) && (swdata->w & 15) == 0) { /*printf("Using MMX 32-bit dither\n");*/ swdata->Display1X = ColorRGBDitherYV12MMX1X; } else { /*printf("Using C 32-bit dither\n");*/ swdata->Display1X = Color32DitherYV12Mod1X; } #else swdata->Display1X = Color32DitherYV12Mod1X; #endif swdata->Display2X = Color32DitherYV12Mod2X; } break; case SDL_PIXELFORMAT_YUY2: case SDL_PIXELFORMAT_UYVY: case SDL_PIXELFORMAT_YVYU: if (SDL_BYTESPERPIXEL(target_format) == 2) { swdata->Display1X = Color16DitherYUY2Mod1X; swdata->Display2X = Color16DitherYUY2Mod2X; } if (SDL_BYTESPERPIXEL(target_format) == 3) { swdata->Display1X = Color24DitherYUY2Mod1X; swdata->Display2X = Color24DitherYUY2Mod2X; } if (SDL_BYTESPERPIXEL(target_format) == 4) { swdata->Display1X = Color32DitherYUY2Mod1X; swdata->Display2X = Color32DitherYUY2Mod2X; } break; default: /* We should never get here (caught above) */ break; } if (swdata->display) { SDL_FreeSurface(swdata->display); swdata->display = NULL; } return 0; } SDL_SW_YUVTexture * SDL_SW_CreateYUVTexture(Uint32 format, int w, int h) { SDL_SW_YUVTexture *swdata; int *Cr_r_tab; int *Cr_g_tab; int *Cb_g_tab; int *Cb_b_tab; int i; int CR, CB; swdata = (SDL_SW_YUVTexture *) SDL_calloc(1, sizeof(*swdata)); if (!swdata) { SDL_OutOfMemory(); return NULL; } switch (format) { case SDL_PIXELFORMAT_YV12: case SDL_PIXELFORMAT_IYUV: case SDL_PIXELFORMAT_YUY2: case SDL_PIXELFORMAT_UYVY: case SDL_PIXELFORMAT_YVYU: break; default: SDL_SetError("Unsupported YUV format"); return NULL; } swdata->format = format; swdata->target_format = SDL_PIXELFORMAT_UNKNOWN; swdata->w = w; swdata->h = h; swdata->pixels = (Uint8 *) SDL_malloc(w * h * 2); swdata->colortab = (int *) SDL_malloc(4 * 256 * sizeof(int)); swdata->rgb_2_pix = (Uint32 *) SDL_malloc(3 * 768 * sizeof(Uint32)); if (!swdata->pixels || !swdata->colortab || !swdata->rgb_2_pix) { SDL_OutOfMemory(); SDL_SW_DestroyYUVTexture(swdata); return NULL; } /* Generate the tables for the display surface */ Cr_r_tab = &swdata->colortab[0 * 256]; Cr_g_tab = &swdata->colortab[1 * 256]; Cb_g_tab = &swdata->colortab[2 * 256]; Cb_b_tab = &swdata->colortab[3 * 256]; for (i = 0; i < 256; i++) { /* Gamma correction (luminescence table) and chroma correction would be done here. See the Berkeley mpeg_play sources. */ CB = CR = (i - 128); Cr_r_tab[i] = (int) ((0.419 / 0.299) * CR); Cr_g_tab[i] = (int) (-(0.299 / 0.419) * CR); Cb_g_tab[i] = (int) (-(0.114 / 0.331) * CB); Cb_b_tab[i] = (int) ((0.587 / 0.331) * CB); } /* Find the pitch and offset values for the overlay */ switch (format) { case SDL_PIXELFORMAT_YV12: case SDL_PIXELFORMAT_IYUV: swdata->pitches[0] = w; swdata->pitches[1] = swdata->pitches[0] / 2; swdata->pitches[2] = swdata->pitches[0] / 2; swdata->planes[0] = swdata->pixels; swdata->planes[1] = swdata->planes[0] + swdata->pitches[0] * h; swdata->planes[2] = swdata->planes[1] + swdata->pitches[1] * h / 2; break; case SDL_PIXELFORMAT_YUY2: case SDL_PIXELFORMAT_UYVY: case SDL_PIXELFORMAT_YVYU: swdata->pitches[0] = w * 2; swdata->planes[0] = swdata->pixels; break; default: /* We should never get here (caught above) */ break; } /* We're all done.. */ return (swdata); } int SDL_SW_QueryYUVTexturePixels(SDL_SW_YUVTexture * swdata, void **pixels, int *pitch) { *pixels = swdata->planes[0]; *pitch = swdata->pitches[0]; return 0; } int SDL_SW_UpdateYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect, const void *pixels, int pitch) { switch (swdata->format) { case SDL_PIXELFORMAT_YV12: case SDL_PIXELFORMAT_IYUV: if (rect && (rect->x != 0 || rect->y != 0 || rect->w != swdata->w || rect->h != swdata->h)) { SDL_SetError ("YV12 and IYUV textures only support full surface updates"); return -1; } SDL_memcpy(swdata->pixels, pixels, swdata->h * swdata->w * 2); break; case SDL_PIXELFORMAT_YUY2: case SDL_PIXELFORMAT_UYVY: case SDL_PIXELFORMAT_YVYU: { Uint8 *src, *dst; int row; size_t length; src = (Uint8 *) pixels; dst = swdata->planes[0] + rect->y * swdata->pitches[0] + rect->x * 2; length = rect->w * 2; for (row = 0; row < rect->h; ++row) { SDL_memcpy(dst, src, length); src += pitch; dst += swdata->pitches[0]; } } break; } return 0; } int SDL_SW_LockYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect, int markDirty, void **pixels, int *pitch) { switch (swdata->format) { case SDL_PIXELFORMAT_YV12: case SDL_PIXELFORMAT_IYUV: if (rect && (rect->x != 0 || rect->y != 0 || rect->w != swdata->w || rect->h != swdata->h)) { SDL_SetError ("YV12 and IYUV textures only support full surface locks"); return -1; } break; } *pixels = swdata->planes[0] + rect->y * swdata->pitches[0] + rect->x * 2; *pitch = swdata->pitches[0]; return 0; } void SDL_SW_UnlockYUVTexture(SDL_SW_YUVTexture * swdata) { } int SDL_SW_CopyYUVToRGB(SDL_SW_YUVTexture * swdata, const SDL_Rect * srcrect, Uint32 target_format, int w, int h, void *pixels, int pitch) { int stretch; int scale_2x; Uint8 *lum, *Cr, *Cb; int mod; /* Make sure we're set up to display in the desired format */ if (target_format != swdata->target_format) { if (SDL_SW_SetupYUVDisplay(swdata, target_format) < 0) { return -1; } } stretch = 0; scale_2x = 0; if (srcrect->x || srcrect->y || srcrect->w < swdata->w || srcrect->h < swdata->h) { /* The source rectangle has been clipped. Using a scratch surface is easier than adding clipped source support to all the blitters, plus that would slow them down in the general unclipped case. */ stretch = 1; } else if ((srcrect->w != w) || (srcrect->h != h)) { if ((w == 2 * srcrect->w) && (h == 2 * srcrect->h)) { scale_2x = 1; } else { stretch = 1; } } if (stretch) { int bpp; Uint32 Rmask, Gmask, Bmask, Amask; if (swdata->display) { swdata->display->w = w; swdata->display->h = h; swdata->display->pixels = pixels; swdata->display->pitch = pitch; } else { /* This must have succeeded in SDL_SW_SetupYUVDisplay() earlier */ SDL_PixelFormatEnumToMasks(target_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask); swdata->display = SDL_CreateRGBSurfaceFrom(pixels, w, h, bpp, pitch, Rmask, Gmask, Bmask, Amask); if (!swdata->display) { return (-1); } } if (!swdata->stretch) { /* This must have succeeded in SDL_SW_SetupYUVDisplay() earlier */ SDL_PixelFormatEnumToMasks(target_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask); swdata->stretch = SDL_CreateRGBSurface(0, swdata->w, swdata->h, bpp, Rmask, Gmask, Bmask, Amask); if (!swdata->stretch) { return (-1); } } pixels = swdata->stretch->pixels; pitch = swdata->stretch->pitch; } switch (swdata->format) { case SDL_PIXELFORMAT_YV12: lum = swdata->planes[0]; Cr = swdata->planes[1]; Cb = swdata->planes[2]; break; case SDL_PIXELFORMAT_IYUV: lum = swdata->planes[0]; Cr = swdata->planes[2]; Cb = swdata->planes[1]; break; case SDL_PIXELFORMAT_YUY2: lum = swdata->planes[0]; Cr = lum + 3; Cb = lum + 1; break; case SDL_PIXELFORMAT_UYVY: lum = swdata->planes[0] + 1; Cr = lum + 1; Cb = lum - 1; break; case SDL_PIXELFORMAT_YVYU: lum = swdata->planes[0]; Cr = lum + 1; Cb = lum + 3; break; default: SDL_SetError("Unsupported YUV format in copy"); return (-1); } mod = (pitch / SDL_BYTESPERPIXEL(target_format)); if (scale_2x) { mod -= (swdata->w * 2); swdata->Display2X(swdata->colortab, swdata->rgb_2_pix, lum, Cr, Cb, pixels, swdata->h, swdata->w, mod); } else { mod -= swdata->w; swdata->Display1X(swdata->colortab, swdata->rgb_2_pix, lum, Cr, Cb, pixels, swdata->h, swdata->w, mod); } if (stretch) { SDL_Rect rect = *srcrect; SDL_SoftStretch(swdata->stretch, &rect, swdata->display, NULL); } return 0; } void SDL_SW_DestroyYUVTexture(SDL_SW_YUVTexture * swdata) { if (swdata) { if (swdata->pixels) { SDL_free(swdata->pixels); } if (swdata->colortab) { SDL_free(swdata->colortab); } if (swdata->rgb_2_pix) { SDL_free(swdata->rgb_2_pix); } if (swdata->stretch) { SDL_FreeSurface(swdata->stretch); } if (swdata->display) { SDL_FreeSurface(swdata->display); } SDL_free(swdata); } } /* vi: set ts=4 sw=4 expandtab: */