Mercurial > sdl-ios-xcode
view src/video/SDL_yuv_sw.c @ 563:04dcaf3da918
Massive Quartz input enhancements from Darrell Walisser. His email:
Enclosed is a patch that addresses the following:
--Various minor cleanups.
Removed dead/obsolete code, made some style cleanups
--Mouse Events
Now keep track of what button(s) were pressed so we know when to send
the mouse up event. This fixes the case where the mouse is dragged
outside of the game window and released (in which case we want to send
the mouse up event even though the mouse is outside the game window).
--Input Grabbing
Here is my take on the grabbing situation, which is the basis for the
new implementation.
There are 3 grab states, ungrabbed (UG), visible (VG), and invisible
(IG). Both VG and IG keep the mouse constrained to the window and
produce relative motion events. In VG the cursor is visible (duh), in
IG it is not. In VG, absolute motion events also work.
There are 6 actions that can affect grabbing:
1. Set Fullscreen/Window (F/W). In fullscreen, a visible grab should do
nothing. However, a fullscreen visible grab can be treated just like a
windowed visible grab, which is what I have done to help simplify
things.
2. Cursor hide/show (H/S). If the cursor is hidden when grabbing, the
grab is an invisible grab. If the cursor is visible, the grab should
just constrain the mouse to the window.
3. Input grab/ungrab(G/U). If grabbed, the cursor should be confined to
the window as should the keyboard input. On Mac OS X, the keyboard
input is implicitly grabbed by confining the cursor, except for
command-tab which can switch away from the application. Should the
window come to the foreground if the application is deactivated and
grab input is called? This isn't necessary in this implementation
because the grab state will be asserted upon activation.
Using my notation, these are all the cases that need to be handled
(state + action = new state).
UG+U = UG
UG+G = VG or IG, if cursor is visible or not
UG+H = UG
UG+S = UG
VG+U = UG
VG+G = VG
VG+H = IG
VG+S = VG
IG+U = UG
IG+G = IG
IG+H = IG
IG+S = VG
The cases that result in the same state can be ignored in the code,
which cuts it down to just 5 cases.
Another issue is what happens when the app loses/gains input focus from
deactivate/activate or iconify/deiconify. I think that if input focus
is ever lost (outside of SDL's control), the grab state should be
suspended and the cursor should become visible and active again. When
regained, the cursor should reappear in its original location and/or
grab state. This way, when reactivating the cursor is still in the same
position as before so apps shouldn't get confused when the next motion
event comes in. This is what I've done in this patch.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Fri, 27 Dec 2002 20:52:41 +0000 |
| parents | c94b390687d2 |
| children | 22dbf364c017 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* This is the software implementation of the YUV video overlay 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 <stdlib.h> #include <string.h> #include "SDL_error.h" #include "SDL_video.h" #include "SDL_stretch_c.h" #include "SDL_yuvfuncs.h" #include "SDL_yuv_sw_c.h" /* Function to check the CPU flags */ #define MMX_CPU 0x800000 #ifdef USE_ASMBLIT #define CPU_Flags() Hermes_X86_CPU() #else #define CPU_Flags() 0L #endif #ifdef USE_ASMBLIT #define X86_ASSEMBLER #define HermesConverterInterface void #define HermesClearInterface void #define STACKCALL #include "HeadX86.h" #endif /* The functions used to manipulate software video overlays */ static struct private_yuvhwfuncs sw_yuvfuncs = { SDL_LockYUV_SW, SDL_UnlockYUV_SW, SDL_DisplayYUV_SW, SDL_FreeYUV_SW }; /* RGB conversion lookup tables */ struct private_yuvhwdata { SDL_Surface *stretch; SDL_Surface *display; 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]; }; /* The colorspace conversion functions */ 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 ); 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++ = (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; } } 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++ = (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; } } 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); } SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display) { SDL_Overlay *overlay; struct private_yuvhwdata *swdata; int *Cr_r_tab; int *Cr_g_tab; int *Cb_g_tab; int *Cb_b_tab; Uint32 *r_2_pix_alloc; Uint32 *g_2_pix_alloc; Uint32 *b_2_pix_alloc; int i, cpu_mmx; int CR, CB; Uint32 Rmask, Gmask, Bmask; /* Only RGB packed pixel conversion supported */ if ( (display->format->BytesPerPixel != 2) && (display->format->BytesPerPixel != 3) && (display->format->BytesPerPixel != 4) ) { SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces"); return(NULL); } /* Verify that we support the format */ switch (format) { case SDL_YV12_OVERLAY: case SDL_IYUV_OVERLAY: case SDL_YUY2_OVERLAY: case SDL_UYVY_OVERLAY: case SDL_YVYU_OVERLAY: break; default: SDL_SetError("Unsupported YUV format"); return(NULL); } /* Create the overlay structure */ overlay = (SDL_Overlay *)malloc(sizeof *overlay); if ( overlay == NULL ) { SDL_OutOfMemory(); return(NULL); } memset(overlay, 0, (sizeof *overlay)); /* Fill in the basic members */ overlay->format = format; overlay->w = width; overlay->h = height; /* Set up the YUV surface function structure */ overlay->hwfuncs = &sw_yuvfuncs; /* Create the pixel data and lookup tables */ swdata = (struct private_yuvhwdata *)malloc(sizeof *swdata); overlay->hwdata = swdata; if ( swdata == NULL ) { SDL_OutOfMemory(); SDL_FreeYUVOverlay(overlay); return(NULL); } swdata->stretch = NULL; swdata->display = display; swdata->pixels = (Uint8 *) malloc(width*height*2); swdata->colortab = (int *)malloc(4*256*sizeof(int)); 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]; swdata->rgb_2_pix = (Uint32 *)malloc(3*768*sizeof(Uint32)); 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]; if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) { SDL_OutOfMemory(); SDL_FreeYUVOverlay(overlay); return(NULL); } /* Generate the tables for the display surface */ 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); } /* * Set up entries 0-255 in rgb-to-pixel value tables. */ Rmask = display->format->Rmask; Gmask = display->format->Gmask; Bmask = display->format->Bmask; 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); g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask)); g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask); b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask)); b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask); } /* * 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( display->format->BytesPerPixel == 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 (format) { case SDL_YV12_OVERLAY: case SDL_IYUV_OVERLAY: cpu_mmx = CPU_Flags() & MMX_CPU; if ( display->format->BytesPerPixel == 2 ) { #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) /* inline assembly functions */ if ( cpu_mmx && (Rmask == 0xF800) && (Gmask == 0x07E0) && (Bmask == 0x001F) && (width & 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 ( display->format->BytesPerPixel == 3 ) { swdata->Display1X = Color24DitherYV12Mod1X; swdata->Display2X = Color24DitherYV12Mod2X; } if ( display->format->BytesPerPixel == 4 ) { #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) /* inline assembly functions */ if ( cpu_mmx && (Rmask == 0x00FF0000) && (Gmask == 0x0000FF00) && (Bmask == 0x000000FF) && (width & 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_YUY2_OVERLAY: case SDL_UYVY_OVERLAY: case SDL_YVYU_OVERLAY: if ( display->format->BytesPerPixel == 2 ) { swdata->Display1X = Color16DitherYUY2Mod1X; swdata->Display2X = Color16DitherYUY2Mod2X; } if ( display->format->BytesPerPixel == 3 ) { swdata->Display1X = Color24DitherYUY2Mod1X; swdata->Display2X = Color24DitherYUY2Mod2X; } if ( display->format->BytesPerPixel == 4 ) { swdata->Display1X = Color32DitherYUY2Mod1X; swdata->Display2X = Color32DitherYUY2Mod2X; } break; default: /* We should never get here (caught above) */ break; } /* Find the pitch and offset values for the overlay */ overlay->pitches = swdata->pitches; overlay->pixels = swdata->planes; switch (format) { case SDL_YV12_OVERLAY: case SDL_IYUV_OVERLAY: overlay->pitches[0] = overlay->w; overlay->pitches[1] = overlay->pitches[0] / 2; overlay->pitches[2] = overlay->pitches[0] / 2; overlay->pixels[0] = swdata->pixels; overlay->pixels[1] = overlay->pixels[0] + overlay->pitches[0] * overlay->h; overlay->pixels[2] = overlay->pixels[1] + overlay->pitches[1] * overlay->h / 2; overlay->planes = 3; break; case SDL_YUY2_OVERLAY: case SDL_UYVY_OVERLAY: case SDL_YVYU_OVERLAY: overlay->pitches[0] = overlay->w*2; overlay->pixels[0] = swdata->pixels; overlay->planes = 1; break; default: /* We should never get here (caught above) */ break; } /* We're all done.. */ return(overlay); } int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay) { return(0); } void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay) { return; } int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) { struct private_yuvhwdata *swdata; SDL_Surface *stretch; SDL_Surface *display; int scale_2x; Uint8 *lum, *Cr, *Cb; Uint8 *dst; int mod; swdata = overlay->hwdata; scale_2x = 0; stretch = 0; if ( (overlay->w != dstrect->w) || (overlay->h != dstrect->h) ) { if ( (dstrect->w == 2*overlay->w) && (dstrect->h == 2*overlay->h) ) { scale_2x = 1; } else { if ( ! swdata->stretch ) { display = swdata->display; swdata->stretch = SDL_CreateRGBSurface( SDL_SWSURFACE, overlay->w, overlay->h, display->format->BitsPerPixel, display->format->Rmask, display->format->Gmask, display->format->Bmask, 0); if ( ! swdata->stretch ) { return(-1); } } stretch = swdata->stretch; } } if ( stretch ) { display = stretch; } else { display = swdata->display; } switch (overlay->format) { case SDL_YV12_OVERLAY: lum = overlay->pixels[0]; Cr = overlay->pixels[1]; Cb = overlay->pixels[2]; break; case SDL_IYUV_OVERLAY: lum = overlay->pixels[0]; Cr = overlay->pixels[2]; Cb = overlay->pixels[1]; break; case SDL_YUY2_OVERLAY: lum = overlay->pixels[0]; Cr = lum + 3; Cb = lum + 1; break; case SDL_UYVY_OVERLAY: lum = overlay->pixels[0]+1; Cr = lum + 1; Cb = lum - 1; break; case SDL_YVYU_OVERLAY: lum = overlay->pixels[0]; Cr = lum + 1; Cb = lum + 3; break; default: SDL_SetError("Unsupported YUV format in blit"); return(-1); } if ( SDL_MUSTLOCK(display) ) { if ( SDL_LockSurface(display) < 0 ) { return(-1); } } if ( stretch ) { dst = (Uint8 *)stretch->pixels; } else { dst = (Uint8 *)display->pixels + dstrect->x * display->format->BytesPerPixel + dstrect->y * display->pitch; } mod = (display->pitch / display->format->BytesPerPixel); if ( scale_2x ) { mod -= (overlay->w * 2); swdata->Display2X(swdata->colortab, swdata->rgb_2_pix, lum, Cr, Cb, dst, overlay->h, overlay->w,mod); } else { mod -= overlay->w; swdata->Display1X(swdata->colortab, swdata->rgb_2_pix, lum, Cr, Cb, dst, overlay->h, overlay->w,mod); } if ( SDL_MUSTLOCK(display) ) { SDL_UnlockSurface(display); } if ( stretch ) { display = swdata->display; SDL_SoftStretch(stretch, NULL, display, dstrect); } SDL_UpdateRects(display, 1, dstrect); return(0); } void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay) { struct private_yuvhwdata *swdata; swdata = overlay->hwdata; if ( swdata ) { if ( swdata->stretch ) { SDL_FreeSurface(swdata->stretch); } if ( swdata->pixels ) { free(swdata->pixels); } if ( swdata->colortab ) { free(swdata->colortab); } if ( swdata->rgb_2_pix ) { free(swdata->rgb_2_pix); } free(swdata); } }