diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/video/SDL_yuv_sw.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/video/SDL_yuv_sw.c | 1298 |
1 files changed, 0 insertions, 1298 deletions
diff --git a/distrib/sdl-1.2.12/src/video/SDL_yuv_sw.c b/distrib/sdl-1.2.12/src/video/SDL_yuv_sw.c deleted file mode 100644 index 13c4a92..0000000 --- a/distrib/sdl-1.2.12/src/video/SDL_yuv_sw.c +++ /dev/null @@ -1,1298 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2006 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 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 "SDL_video.h" -#include "SDL_cpuinfo.h" -#include "SDL_stretch_c.h" -#include "SDL_yuvfuncs.h" -#include "SDL_yuv_sw_c.h" - -/* 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 */ - -#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); -} - - -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; - 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 *)SDL_malloc(sizeof *overlay); - if ( overlay == NULL ) { - SDL_OutOfMemory(); - return(NULL); - } - SDL_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 *)SDL_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 *) SDL_malloc(width*height*2); - swdata->colortab = (int *)SDL_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 *)SDL_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: - if ( display->format->BytesPerPixel == 2 ) { -#if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES - /* inline assembly functions */ - if ( SDL_HasMMX() && (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 (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES - /* inline assembly functions */ - if ( SDL_HasMMX() && (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 *src, SDL_Rect *dst) -{ - struct private_yuvhwdata *swdata; - int stretch; - int scale_2x; - SDL_Surface *display; - Uint8 *lum, *Cr, *Cb; - Uint8 *dstp; - int mod; - - swdata = overlay->hwdata; - stretch = 0; - scale_2x = 0; - if ( src->x || src->y || src->w < overlay->w || src->h < overlay->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 ( (src->w != dst->w) || (src->h != dst->h) ) { - if ( (dst->w == 2*src->w) && - (dst->h == 2*src->h) ) { - scale_2x = 1; - } else { - stretch = 1; - } - } - if ( stretch ) { - 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); - } - } - display = swdata->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 ) { - dstp = (Uint8 *)swdata->stretch->pixels; - } else { - dstp = (Uint8 *)display->pixels - + dst->x * display->format->BytesPerPixel - + dst->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, dstp, overlay->h, overlay->w, mod); - } else { - mod -= overlay->w; - swdata->Display1X(swdata->colortab, swdata->rgb_2_pix, - lum, Cr, Cb, dstp, overlay->h, overlay->w, mod); - } - if ( SDL_MUSTLOCK(display) ) { - SDL_UnlockSurface(display); - } - if ( stretch ) { - display = swdata->display; - SDL_SoftStretch(swdata->stretch, src, display, dst); - } - SDL_UpdateRects(display, 1, dst); - - 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 ) { - SDL_free(swdata->pixels); - } - if ( swdata->colortab ) { - SDL_free(swdata->colortab); - } - if ( swdata->rgb_2_pix ) { - SDL_free(swdata->rgb_2_pix); - } - SDL_free(swdata); - } -} |