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0
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* This is the software implementation of the YUV video overlay support */
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29
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30 /* This code was derived from code carrying the following copyright notices:
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31
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32 * Copyright (c) 1995 The Regents of the University of California.
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33 * All rights reserved.
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34 *
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35 * Permission to use, copy, modify, and distribute this software and its
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36 * documentation for any purpose, without fee, and without written agreement is
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37 * hereby granted, provided that the above copyright notice and the following
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38 * two paragraphs appear in all copies of this software.
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39 *
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40 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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41 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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42 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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43 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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44 *
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45 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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46 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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47 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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48 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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49 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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50
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51 * Copyright (c) 1995 Erik Corry
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52 * All rights reserved.
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53 *
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54 * Permission to use, copy, modify, and distribute this software and its
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55 * documentation for any purpose, without fee, and without written agreement is
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56 * hereby granted, provided that the above copyright notice and the following
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57 * two paragraphs appear in all copies of this software.
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58 *
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59 * IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
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60 * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
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61 * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED
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62 * OF THE POSSIBILITY OF SUCH DAMAGE.
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63 *
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64 * ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
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65 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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66 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
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67 * BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
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68 * UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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69
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70 * Portions of this software Copyright (c) 1995 Brown University.
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71 * All rights reserved.
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72 *
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73 * Permission to use, copy, modify, and distribute this software and its
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74 * documentation for any purpose, without fee, and without written agreement
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75 * is hereby granted, provided that the above copyright notice and the
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76 * following two paragraphs appear in all copies of this software.
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77 *
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78 * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR
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79 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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80 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN
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81 * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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82 *
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83 * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
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84 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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85 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
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86 * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
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87 * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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88 */
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89
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90 #include <stdlib.h>
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91 #include <string.h>
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92
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93 #include "SDL_error.h"
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94 #include "SDL_video.h"
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95 #include "SDL_stretch_c.h"
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96 #include "SDL_yuvfuncs.h"
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97 #include "SDL_yuv_sw_c.h"
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98
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99 /* Function to check the CPU flags */
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100 #define MMX_CPU 0x800000
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101 #ifdef USE_ASMBLIT
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102 #define CPU_Flags() Hermes_X86_CPU()
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103 #else
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104 #define CPU_Flags() 0L
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105 #endif
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106
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107 #ifdef USE_ASMBLIT
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108 #define X86_ASSEMBLER
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109 #define HermesConverterInterface void
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110 #define HermesClearInterface void
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111 #define STACKCALL
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112 typedef Uint32 int32;
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113
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114 #include "HeadX86.h"
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115 #endif
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116
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117 /* The functions used to manipulate software video overlays */
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118 static struct private_yuvhwfuncs sw_yuvfuncs = {
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119 SDL_LockYUV_SW,
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120 SDL_UnlockYUV_SW,
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121 SDL_DisplayYUV_SW,
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122 SDL_FreeYUV_SW
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123 };
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124
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125 /* RGB conversion lookup tables */
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126 struct private_yuvhwdata {
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127 SDL_Surface *stretch;
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128 SDL_Surface *display;
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129 Uint8 *pixels;
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130 int *colortab;
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131 Uint32 *rgb_2_pix;
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132 void (*Display1X)(int *colortab, Uint32 *rgb_2_pix,
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133 unsigned char *lum, unsigned char *cr,
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134 unsigned char *cb, unsigned char *out,
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135 int rows, int cols, int mod );
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136 void (*Display2X)(int *colortab, Uint32 *rgb_2_pix,
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137 unsigned char *lum, unsigned char *cr,
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138 unsigned char *cb, unsigned char *out,
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139 int rows, int cols, int mod );
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140
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141 /* These are just so we don't have to allocate them separately */
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142 Uint16 pitches[3];
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143 Uint8 *planes[3];
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144 };
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145
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146
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147 /* The colorspace conversion functions */
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148
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149 extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
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150 unsigned char *lum, unsigned char *cr,
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151 unsigned char *cb, unsigned char *out,
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152 int rows, int cols, int mod );
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153 extern void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
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154 unsigned char *lum, unsigned char *cr,
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155 unsigned char *cb, unsigned char *out,
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156 int rows, int cols, int mod );
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157
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158 static void Color16DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
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159 unsigned char *lum, unsigned char *cr,
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160 unsigned char *cb, unsigned char *out,
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161 int rows, int cols, int mod )
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162 {
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163 unsigned short* row1;
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164 unsigned short* row2;
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165 unsigned char* lum2;
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166 int x, y;
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167 int cr_r;
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168 int crb_g;
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169 int cb_b;
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170 int cols_2 = cols / 2;
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171
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172 row1 = (unsigned short*) out;
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173 row2 = row1 + cols + mod;
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174 lum2 = lum + cols;
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175
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176 mod += cols + mod;
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177
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178 y = rows / 2;
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179 while( y-- )
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180 {
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181 x = cols_2;
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182 while( x-- )
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183 {
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184 register int L;
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185
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186 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
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187 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
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188 + colortab[ *cb + 2*256 ];
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189 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
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190 ++cr; ++cb;
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191
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192 L = *lum++;
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193 *row1++ = (rgb_2_pix[ L + cr_r ] |
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194 rgb_2_pix[ L + crb_g ] |
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195 rgb_2_pix[ L + cb_b ]);
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196
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197 L = *lum++;
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198 *row1++ = (rgb_2_pix[ L + cr_r ] |
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199 rgb_2_pix[ L + crb_g ] |
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200 rgb_2_pix[ L + cb_b ]);
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201
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202
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203 /* Now, do second row. */
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204
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205 L = *lum2++;
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206 *row2++ = (rgb_2_pix[ L + cr_r ] |
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207 rgb_2_pix[ L + crb_g ] |
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208 rgb_2_pix[ L + cb_b ]);
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209
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210 L = *lum2++;
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211 *row2++ = (rgb_2_pix[ L + cr_r ] |
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212 rgb_2_pix[ L + crb_g ] |
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213 rgb_2_pix[ L + cb_b ]);
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214 }
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215
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216 /*
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217 * These values are at the start of the next line, (due
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218 * to the ++'s above),but they need to be at the start
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219 * of the line after that.
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220 */
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221 lum += cols;
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222 lum2 += cols;
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223 row1 += mod;
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224 row2 += mod;
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225 }
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226 }
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227
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228 static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
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229 unsigned char *lum, unsigned char *cr,
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230 unsigned char *cb, unsigned char *out,
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231 int rows, int cols, int mod )
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232 {
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233 unsigned int value;
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234 unsigned char* row1;
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235 unsigned char* row2;
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236 unsigned char* lum2;
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237 int x, y;
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238 int cr_r;
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239 int crb_g;
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240 int cb_b;
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241 int cols_2 = cols / 2;
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242
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243 row1 = out;
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244 row2 = row1 + cols*3 + mod*3;
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245 lum2 = lum + cols;
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246
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247 mod += cols + mod;
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248 mod *= 3;
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249
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250 y = rows / 2;
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251 while( y-- )
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252 {
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253 x = cols_2;
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254 while( x-- )
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255 {
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256 register int L;
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257
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258 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
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259 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
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260 + colortab[ *cb + 2*256 ];
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261 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
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262 ++cr; ++cb;
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263
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264 L = *lum++;
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265 value = (rgb_2_pix[ L + cr_r ] |
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266 rgb_2_pix[ L + crb_g ] |
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267 rgb_2_pix[ L + cb_b ]);
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268 *row1++ = (value ) & 0xFF;
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269 *row1++ = (value >> 8) & 0xFF;
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270 *row1++ = (value >> 16) & 0xFF;
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271
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272 L = *lum++;
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273 value = (rgb_2_pix[ L + cr_r ] |
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274 rgb_2_pix[ L + crb_g ] |
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275 rgb_2_pix[ L + cb_b ]);
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276 *row1++ = (value ) & 0xFF;
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277 *row1++ = (value >> 8) & 0xFF;
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278 *row1++ = (value >> 16) & 0xFF;
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279
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280
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281 /* Now, do second row. */
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282
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283 L = *lum2++;
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284 value = (rgb_2_pix[ L + cr_r ] |
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285 rgb_2_pix[ L + crb_g ] |
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286 rgb_2_pix[ L + cb_b ]);
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287 *row2++ = (value ) & 0xFF;
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288 *row2++ = (value >> 8) & 0xFF;
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289 *row2++ = (value >> 16) & 0xFF;
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290
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291 L = *lum2++;
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292 value = (rgb_2_pix[ L + cr_r ] |
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293 rgb_2_pix[ L + crb_g ] |
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294 rgb_2_pix[ L + cb_b ]);
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295 *row2++ = (value ) & 0xFF;
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296 *row2++ = (value >> 8) & 0xFF;
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297 *row2++ = (value >> 16) & 0xFF;
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298 }
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299
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300 /*
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301 * These values are at the start of the next line, (due
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302 * to the ++'s above),but they need to be at the start
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303 * of the line after that.
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304 */
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305 lum += cols;
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306 lum2 += cols;
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307 row1 += mod;
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308 row2 += mod;
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309 }
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310 }
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311
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312 static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
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313 unsigned char *lum, unsigned char *cr,
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314 unsigned char *cb, unsigned char *out,
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315 int rows, int cols, int mod )
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316 {
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317 unsigned int* row1;
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318 unsigned int* row2;
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319 unsigned char* lum2;
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320 int x, y;
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321 int cr_r;
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322 int crb_g;
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323 int cb_b;
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324 int cols_2 = cols / 2;
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325
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326 row1 = (unsigned int*) out;
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327 row2 = row1 + cols + mod;
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328 lum2 = lum + cols;
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329
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330 mod += cols + mod;
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331
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332 y = rows / 2;
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333 while( y-- )
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334 {
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335 x = cols_2;
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336 while( x-- )
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337 {
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338 register int L;
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339
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340 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
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341 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
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342 + colortab[ *cb + 2*256 ];
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343 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
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344 ++cr; ++cb;
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345
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346 L = *lum++;
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347 *row1++ = (rgb_2_pix[ L + cr_r ] |
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348 rgb_2_pix[ L + crb_g ] |
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349 rgb_2_pix[ L + cb_b ]);
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350
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351 L = *lum++;
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352 *row1++ = (rgb_2_pix[ L + cr_r ] |
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353 rgb_2_pix[ L + crb_g ] |
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354 rgb_2_pix[ L + cb_b ]);
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355
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356
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357 /* Now, do second row. */
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358
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359 L = *lum2++;
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360 *row2++ = (rgb_2_pix[ L + cr_r ] |
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361 rgb_2_pix[ L + crb_g ] |
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362 rgb_2_pix[ L + cb_b ]);
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363
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364 L = *lum2++;
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365 *row2++ = (rgb_2_pix[ L + cr_r ] |
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366 rgb_2_pix[ L + crb_g ] |
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367 rgb_2_pix[ L + cb_b ]);
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368 }
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369
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370 /*
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371 * These values are at the start of the next line, (due
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372 * to the ++'s above),but they need to be at the start
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373 * of the line after that.
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374 */
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375 lum += cols;
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376 lum2 += cols;
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377 row1 += mod;
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378 row2 += mod;
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379 }
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380 }
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381
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382 /*
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383 * In this function I make use of a nasty trick. The tables have the lower
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384 * 16 bits replicated in the upper 16. This means I can write ints and get
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385 * the horisontal doubling for free (almost).
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386 */
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387 static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix,
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388 unsigned char *lum, unsigned char *cr,
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389 unsigned char *cb, unsigned char *out,
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390 int rows, int cols, int mod )
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391 {
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392 unsigned int* row1 = (unsigned int*) out;
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393 const int next_row = cols+(mod/2);
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394 unsigned int* row2 = row1 + 2*next_row;
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395 unsigned char* lum2;
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396 int x, y;
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|
397 int cr_r;
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|
|
398 int crb_g;
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|
|
399 int cb_b;
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|
|
400 int cols_2 = cols / 2;
|
|
|
401
|
|
|
402 lum2 = lum + cols;
|
|
|
403
|
|
|
404 mod = (next_row * 3) + (mod/2);
|
|
|
405
|
|
|
406 y = rows / 2;
|
|
|
407 while( y-- )
|
|
|
408 {
|
|
|
409 x = cols_2;
|
|
|
410 while( x-- )
|
|
|
411 {
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|
|
412 register int L;
|
|
|
413
|
|
|
414 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
|
|
|
415 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
|
|
|
416 + colortab[ *cb + 2*256 ];
|
|
|
417 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
|
|
|
418 ++cr; ++cb;
|
|
|
419
|
|
|
420 L = *lum++;
|
|
|
421 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] |
|
|
|
422 rgb_2_pix[ L + crb_g ] |
|
|
|
423 rgb_2_pix[ L + cb_b ]);
|
|
|
424 row1++;
|
|
|
425
|
|
|
426 L = *lum++;
|
|
|
427 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] |
|
|
|
428 rgb_2_pix[ L + crb_g ] |
|
|
|
429 rgb_2_pix[ L + cb_b ]);
|
|
|
430 row1++;
|
|
|
431
|
|
|
432
|
|
|
433 /* Now, do second row. */
|
|
|
434
|
|
|
435 L = *lum2++;
|
|
|
436 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] |
|
|
|
437 rgb_2_pix[ L + crb_g ] |
|
|
|
438 rgb_2_pix[ L + cb_b ]);
|
|
|
439 row2++;
|
|
|
440
|
|
|
441 L = *lum2++;
|
|
|
442 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] |
|
|
|
443 rgb_2_pix[ L + crb_g ] |
|
|
|
444 rgb_2_pix[ L + cb_b ]);
|
|
|
445 row2++;
|
|
|
446 }
|
|
|
447
|
|
|
448 /*
|
|
|
449 * These values are at the start of the next line, (due
|
|
|
450 * to the ++'s above),but they need to be at the start
|
|
|
451 * of the line after that.
|
|
|
452 */
|
|
|
453 lum += cols;
|
|
|
454 lum2 += cols;
|
|
|
455 row1 += mod;
|
|
|
456 row2 += mod;
|
|
|
457 }
|
|
|
458 }
|
|
|
459
|
|
|
460 static void Color24DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix,
|
|
|
461 unsigned char *lum, unsigned char *cr,
|
|
|
462 unsigned char *cb, unsigned char *out,
|
|
|
463 int rows, int cols, int mod )
|
|
|
464 {
|
|
|
465 unsigned int value;
|
|
|
466 unsigned char* row1 = out;
|
|
|
467 const int next_row = (cols*2 + mod) * 3;
|
|
|
468 unsigned char* row2 = row1 + 2*next_row;
|
|
|
469 unsigned char* lum2;
|
|
|
470 int x, y;
|
|
|
471 int cr_r;
|
|
|
472 int crb_g;
|
|
|
473 int cb_b;
|
|
|
474 int cols_2 = cols / 2;
|
|
|
475
|
|
|
476 lum2 = lum + cols;
|
|
|
477
|
|
|
478 mod = next_row*3 + mod*3;
|
|
|
479
|
|
|
480 y = rows / 2;
|
|
|
481 while( y-- )
|
|
|
482 {
|
|
|
483 x = cols_2;
|
|
|
484 while( x-- )
|
|
|
485 {
|
|
|
486 register int L;
|
|
|
487
|
|
|
488 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
|
|
|
489 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
|
|
|
490 + colortab[ *cb + 2*256 ];
|
|
|
491 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
|
|
|
492 ++cr; ++cb;
|
|
|
493
|
|
|
494 L = *lum++;
|
|
|
495 value = (rgb_2_pix[ L + cr_r ] |
|
|
|
496 rgb_2_pix[ L + crb_g ] |
|
|
|
497 rgb_2_pix[ L + cb_b ]);
|
|
|
498 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] =
|
|
|
499 (value ) & 0xFF;
|
|
|
500 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] =
|
|
|
501 (value >> 8) & 0xFF;
|
|
|
502 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] =
|
|
|
503 (value >> 16) & 0xFF;
|
|
|
504 row1 += 2*3;
|
|
|
505
|
|
|
506 L = *lum++;
|
|
|
507 value = (rgb_2_pix[ L + cr_r ] |
|
|
|
508 rgb_2_pix[ L + crb_g ] |
|
|
|
509 rgb_2_pix[ L + cb_b ]);
|
|
|
510 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] =
|
|
|
511 (value ) & 0xFF;
|
|
|
512 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] =
|
|
|
513 (value >> 8) & 0xFF;
|
|
|
514 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] =
|
|
|
515 (value >> 16) & 0xFF;
|
|
|
516 row1 += 2*3;
|
|
|
517
|
|
|
518
|
|
|
519 /* Now, do second row. */
|
|
|
520
|
|
|
521 L = *lum2++;
|
|
|
522 value = (rgb_2_pix[ L + cr_r ] |
|
|
|
523 rgb_2_pix[ L + crb_g ] |
|
|
|
524 rgb_2_pix[ L + cb_b ]);
|
|
|
525 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] =
|
|
|
526 (value ) & 0xFF;
|
|
|
527 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] =
|
|
|
528 (value >> 8) & 0xFF;
|
|
|
529 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] =
|
|
|
530 (value >> 16) & 0xFF;
|
|
|
531 row2 += 2*3;
|
|
|
532
|
|
|
533 L = *lum2++;
|
|
|
534 value = (rgb_2_pix[ L + cr_r ] |
|
|
|
535 rgb_2_pix[ L + crb_g ] |
|
|
|
536 rgb_2_pix[ L + cb_b ]);
|
|
|
537 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] =
|
|
|
538 (value ) & 0xFF;
|
|
|
539 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] =
|
|
|
540 (value >> 8) & 0xFF;
|
|
|
541 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] =
|
|
|
542 (value >> 16) & 0xFF;
|
|
|
543 row2 += 2*3;
|
|
|
544 }
|
|
|
545
|
|
|
546 /*
|
|
|
547 * These values are at the start of the next line, (due
|
|
|
548 * to the ++'s above),but they need to be at the start
|
|
|
549 * of the line after that.
|
|
|
550 */
|
|
|
551 lum += cols;
|
|
|
552 lum2 += cols;
|
|
|
553 row1 += mod;
|
|
|
554 row2 += mod;
|
|
|
555 }
|
|
|
556 }
|
|
|
557
|
|
|
558 static void Color32DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix,
|
|
|
559 unsigned char *lum, unsigned char *cr,
|
|
|
560 unsigned char *cb, unsigned char *out,
|
|
|
561 int rows, int cols, int mod )
|
|
|
562 {
|
|
|
563 unsigned int* row1 = (unsigned int*) out;
|
|
|
564 const int next_row = cols*2+mod;
|
|
|
565 unsigned int* row2 = row1 + 2*next_row;
|
|
|
566 unsigned char* lum2;
|
|
|
567 int x, y;
|
|
|
568 int cr_r;
|
|
|
569 int crb_g;
|
|
|
570 int cb_b;
|
|
|
571 int cols_2 = cols / 2;
|
|
|
572
|
|
|
573 lum2 = lum + cols;
|
|
|
574
|
|
|
575 mod = (next_row * 3) + mod;
|
|
|
576
|
|
|
577 y = rows / 2;
|
|
|
578 while( y-- )
|
|
|
579 {
|
|
|
580 x = cols_2;
|
|
|
581 while( x-- )
|
|
|
582 {
|
|
|
583 register int L;
|
|
|
584
|
|
|
585 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
|
|
|
586 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
|
|
|
587 + colortab[ *cb + 2*256 ];
|
|
|
588 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
|
|
|
589 ++cr; ++cb;
|
|
|
590
|
|
|
591 L = *lum++;
|
|
|
592 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] =
|
|
|
593 (rgb_2_pix[ L + cr_r ] |
|
|
|
594 rgb_2_pix[ L + crb_g ] |
|
|
|
595 rgb_2_pix[ L + cb_b ]);
|
|
|
596 row1 += 2;
|
|
|
597
|
|
|
598 L = *lum++;
|
|
|
599 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] =
|
|
|
600 (rgb_2_pix[ L + cr_r ] |
|
|
|
601 rgb_2_pix[ L + crb_g ] |
|
|
|
602 rgb_2_pix[ L + cb_b ]);
|
|
|
603 row1 += 2;
|
|
|
604
|
|
|
605
|
|
|
606 /* Now, do second row. */
|
|
|
607
|
|
|
608 L = *lum2++;
|
|
|
609 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] =
|
|
|
610 (rgb_2_pix[ L + cr_r ] |
|
|
|
611 rgb_2_pix[ L + crb_g ] |
|
|
|
612 rgb_2_pix[ L + cb_b ]);
|
|
|
613 row2 += 2;
|
|
|
614
|
|
|
615 L = *lum2++;
|
|
|
616 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] =
|
|
|
617 (rgb_2_pix[ L + cr_r ] |
|
|
|
618 rgb_2_pix[ L + crb_g ] |
|
|
|
619 rgb_2_pix[ L + cb_b ]);
|
|
|
620 row2 += 2;
|
|
|
621 }
|
|
|
622
|
|
|
623 /*
|
|
|
624 * These values are at the start of the next line, (due
|
|
|
625 * to the ++'s above),but they need to be at the start
|
|
|
626 * of the line after that.
|
|
|
627 */
|
|
|
628 lum += cols;
|
|
|
629 lum2 += cols;
|
|
|
630 row1 += mod;
|
|
|
631 row2 += mod;
|
|
|
632 }
|
|
|
633 }
|
|
|
634
|
|
|
635 static void Color16DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix,
|
|
|
636 unsigned char *lum, unsigned char *cr,
|
|
|
637 unsigned char *cb, unsigned char *out,
|
|
|
638 int rows, int cols, int mod )
|
|
|
639 {
|
|
|
640 unsigned short* row;
|
|
|
641 int x, y;
|
|
|
642 int cr_r;
|
|
|
643 int crb_g;
|
|
|
644 int cb_b;
|
|
|
645 int cols_2 = cols / 2;
|
|
|
646
|
|
|
647 row = (unsigned short*) out;
|
|
|
648
|
|
|
649 y = rows;
|
|
|
650 while( y-- )
|
|
|
651 {
|
|
|
652 x = cols_2;
|
|
|
653 while( x-- )
|
|
|
654 {
|
|
|
655 register int L;
|
|
|
656
|
|
|
657 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
|
|
|
658 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
|
|
|
659 + colortab[ *cb + 2*256 ];
|
|
|
660 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
|
|
|
661 cr += 4; cb += 4;
|
|
|
662
|
|
|
663 L = *lum; lum += 2;
|
|
|
664 *row++ = (rgb_2_pix[ L + cr_r ] |
|
|
|
665 rgb_2_pix[ L + crb_g ] |
|
|
|
666 rgb_2_pix[ L + cb_b ]);
|
|
|
667
|
|
|
668 L = *lum; lum += 2;
|
|
|
669 *row++ = (rgb_2_pix[ L + cr_r ] |
|
|
|
670 rgb_2_pix[ L + crb_g ] |
|
|
|
671 rgb_2_pix[ L + cb_b ]);
|
|
|
672
|
|
|
673 }
|
|
|
674
|
|
|
675 row += mod;
|
|
|
676 }
|
|
|
677 }
|
|
|
678
|
|
|
679 static void Color24DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix,
|
|
|
680 unsigned char *lum, unsigned char *cr,
|
|
|
681 unsigned char *cb, unsigned char *out,
|
|
|
682 int rows, int cols, int mod )
|
|
|
683 {
|
|
|
684 unsigned int value;
|
|
|
685 unsigned char* row;
|
|
|
686 int x, y;
|
|
|
687 int cr_r;
|
|
|
688 int crb_g;
|
|
|
689 int cb_b;
|
|
|
690 int cols_2 = cols / 2;
|
|
|
691
|
|
|
692 row = (unsigned char*) out;
|
|
|
693 mod *= 3;
|
|
|
694 y = rows;
|
|
|
695 while( y-- )
|
|
|
696 {
|
|
|
697 x = cols_2;
|
|
|
698 while( x-- )
|
|
|
699 {
|
|
|
700 register int L;
|
|
|
701
|
|
|
702 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
|
|
|
703 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
|
|
|
704 + colortab[ *cb + 2*256 ];
|
|
|
705 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
|
|
|
706 cr += 4; cb += 4;
|
|
|
707
|
|
|
708 L = *lum; lum += 2;
|
|
|
709 value = (rgb_2_pix[ L + cr_r ] |
|
|
|
710 rgb_2_pix[ L + crb_g ] |
|
|
|
711 rgb_2_pix[ L + cb_b ]);
|
|
|
712 *row++ = (value ) & 0xFF;
|
|
|
713 *row++ = (value >> 8) & 0xFF;
|
|
|
714 *row++ = (value >> 16) & 0xFF;
|
|
|
715
|
|
|
716 L = *lum; lum += 2;
|
|
|
717 value = (rgb_2_pix[ L + cr_r ] |
|
|
|
718 rgb_2_pix[ L + crb_g ] |
|
|
|
719 rgb_2_pix[ L + cb_b ]);
|
|
|
720 *row++ = (value ) & 0xFF;
|
|
|
721 *row++ = (value >> 8) & 0xFF;
|
|
|
722 *row++ = (value >> 16) & 0xFF;
|
|
|
723
|
|
|
724 }
|
|
|
725 row += mod;
|
|
|
726 }
|
|
|
727 }
|
|
|
728
|
|
|
729 static void Color32DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix,
|
|
|
730 unsigned char *lum, unsigned char *cr,
|
|
|
731 unsigned char *cb, unsigned char *out,
|
|
|
732 int rows, int cols, int mod )
|
|
|
733 {
|
|
|
734 unsigned int* row;
|
|
|
735 int x, y;
|
|
|
736 int cr_r;
|
|
|
737 int crb_g;
|
|
|
738 int cb_b;
|
|
|
739 int cols_2 = cols / 2;
|
|
|
740
|
|
|
741 row = (unsigned int*) out;
|
|
|
742 y = rows;
|
|
|
743 while( y-- )
|
|
|
744 {
|
|
|
745 x = cols_2;
|
|
|
746 while( x-- )
|
|
|
747 {
|
|
|
748 register int L;
|
|
|
749
|
|
|
750 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
|
|
|
751 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
|
|
|
752 + colortab[ *cb + 2*256 ];
|
|
|
753 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
|
|
|
754 cr += 4; cb += 4;
|
|
|
755
|
|
|
756 L = *lum; lum += 2;
|
|
|
757 *row++ = (rgb_2_pix[ L + cr_r ] |
|
|
|
758 rgb_2_pix[ L + crb_g ] |
|
|
|
759 rgb_2_pix[ L + cb_b ]);
|
|
|
760
|
|
|
761 L = *lum; lum += 2;
|
|
|
762 *row++ = (rgb_2_pix[ L + cr_r ] |
|
|
|
763 rgb_2_pix[ L + crb_g ] |
|
|
|
764 rgb_2_pix[ L + cb_b ]);
|
|
|
765
|
|
|
766
|
|
|
767 }
|
|
|
768 row += mod;
|
|
|
769 }
|
|
|
770 }
|
|
|
771
|
|
|
772 /*
|
|
|
773 * In this function I make use of a nasty trick. The tables have the lower
|
|
|
774 * 16 bits replicated in the upper 16. This means I can write ints and get
|
|
|
775 * the horisontal doubling for free (almost).
|
|
|
776 */
|
|
|
777 static void Color16DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix,
|
|
|
778 unsigned char *lum, unsigned char *cr,
|
|
|
779 unsigned char *cb, unsigned char *out,
|
|
|
780 int rows, int cols, int mod )
|
|
|
781 {
|
|
|
782 unsigned int* row = (unsigned int*) out;
|
|
|
783 const int next_row = cols+(mod/2);
|
|
|
784 int x, y;
|
|
|
785 int cr_r;
|
|
|
786 int crb_g;
|
|
|
787 int cb_b;
|
|
|
788 int cols_2 = cols / 2;
|
|
|
789
|
|
|
790 y = rows;
|
|
|
791 while( y-- )
|
|
|
792 {
|
|
|
793 x = cols_2;
|
|
|
794 while( x-- )
|
|
|
795 {
|
|
|
796 register int L;
|
|
|
797
|
|
|
798 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
|
|
|
799 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
|
|
|
800 + colortab[ *cb + 2*256 ];
|
|
|
801 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
|
|
|
802 cr += 4; cb += 4;
|
|
|
803
|
|
|
804 L = *lum; lum += 2;
|
|
|
805 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] |
|
|
|
806 rgb_2_pix[ L + crb_g ] |
|
|
|
807 rgb_2_pix[ L + cb_b ]);
|
|
|
808 row++;
|
|
|
809
|
|
|
810 L = *lum; lum += 2;
|
|
|
811 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] |
|
|
|
812 rgb_2_pix[ L + crb_g ] |
|
|
|
813 rgb_2_pix[ L + cb_b ]);
|
|
|
814 row++;
|
|
|
815
|
|
|
816 }
|
|
|
817 row += next_row;
|
|
|
818 }
|
|
|
819 }
|
|
|
820
|
|
|
821 static void Color24DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix,
|
|
|
822 unsigned char *lum, unsigned char *cr,
|
|
|
823 unsigned char *cb, unsigned char *out,
|
|
|
824 int rows, int cols, int mod )
|
|
|
825 {
|
|
|
826 unsigned int value;
|
|
|
827 unsigned char* row = out;
|
|
|
828 const int next_row = (cols*2 + mod) * 3;
|
|
|
829 int x, y;
|
|
|
830 int cr_r;
|
|
|
831 int crb_g;
|
|
|
832 int cb_b;
|
|
|
833 int cols_2 = cols / 2;
|
|
|
834 y = rows;
|
|
|
835 while( y-- )
|
|
|
836 {
|
|
|
837 x = cols_2;
|
|
|
838 while( x-- )
|
|
|
839 {
|
|
|
840 register int L;
|
|
|
841
|
|
|
842 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
|
|
|
843 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
|
|
|
844 + colortab[ *cb + 2*256 ];
|
|
|
845 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
|
|
|
846 cr += 4; cb += 4;
|
|
|
847
|
|
|
848 L = *lum; lum += 2;
|
|
|
849 value = (rgb_2_pix[ L + cr_r ] |
|
|
|
850 rgb_2_pix[ L + crb_g ] |
|
|
|
851 rgb_2_pix[ L + cb_b ]);
|
|
|
852 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] =
|
|
|
853 (value ) & 0xFF;
|
|
|
854 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] =
|
|
|
855 (value >> 8) & 0xFF;
|
|
|
856 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] =
|
|
|
857 (value >> 16) & 0xFF;
|
|
|
858 row += 2*3;
|
|
|
859
|
|
|
860 L = *lum; lum += 2;
|
|
|
861 value = (rgb_2_pix[ L + cr_r ] |
|
|
|
862 rgb_2_pix[ L + crb_g ] |
|
|
|
863 rgb_2_pix[ L + cb_b ]);
|
|
|
864 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] =
|
|
|
865 (value ) & 0xFF;
|
|
|
866 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] =
|
|
|
867 (value >> 8) & 0xFF;
|
|
|
868 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] =
|
|
|
869 (value >> 16) & 0xFF;
|
|
|
870 row += 2*3;
|
|
|
871
|
|
|
872 }
|
|
|
873 row += next_row;
|
|
|
874 }
|
|
|
875 }
|
|
|
876
|
|
|
877 static void Color32DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix,
|
|
|
878 unsigned char *lum, unsigned char *cr,
|
|
|
879 unsigned char *cb, unsigned char *out,
|
|
|
880 int rows, int cols, int mod )
|
|
|
881 {
|
|
|
882 unsigned int* row = (unsigned int*) out;
|
|
|
883 const int next_row = cols*2+mod;
|
|
|
884 int x, y;
|
|
|
885 int cr_r;
|
|
|
886 int crb_g;
|
|
|
887 int cb_b;
|
|
|
888 int cols_2 = cols / 2;
|
|
|
889 mod+=mod;
|
|
|
890 y = rows;
|
|
|
891 while( y-- )
|
|
|
892 {
|
|
|
893 x = cols_2;
|
|
|
894 while( x-- )
|
|
|
895 {
|
|
|
896 register int L;
|
|
|
897
|
|
|
898 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
|
|
|
899 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
|
|
|
900 + colortab[ *cb + 2*256 ];
|
|
|
901 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
|
|
|
902 cr += 4; cb += 4;
|
|
|
903
|
|
|
904 L = *lum; lum += 2;
|
|
|
905 row[0] = row[1] = row[next_row] = row[next_row+1] =
|
|
|
906 (rgb_2_pix[ L + cr_r ] |
|
|
|
907 rgb_2_pix[ L + crb_g ] |
|
|
|
908 rgb_2_pix[ L + cb_b ]);
|
|
|
909 row += 2;
|
|
|
910
|
|
|
911 L = *lum; lum += 2;
|
|
|
912 row[0] = row[1] = row[next_row] = row[next_row+1] =
|
|
|
913 (rgb_2_pix[ L + cr_r ] |
|
|
|
914 rgb_2_pix[ L + crb_g ] |
|
|
|
915 rgb_2_pix[ L + cb_b ]);
|
|
|
916 row += 2;
|
|
|
917
|
|
|
918
|
|
|
919 }
|
|
|
920
|
|
|
921 row += next_row;
|
|
|
922 }
|
|
|
923 }
|
|
|
924
|
|
|
925 /*
|
|
|
926 * How many 1 bits are there in the Uint32.
|
|
|
927 * Low performance, do not call often.
|
|
|
928 */
|
|
|
929 static int number_of_bits_set( Uint32 a )
|
|
|
930 {
|
|
|
931 if(!a) return 0;
|
|
|
932 if(a & 1) return 1 + number_of_bits_set(a >> 1);
|
|
|
933 return(number_of_bits_set(a >> 1));
|
|
|
934 }
|
|
|
935
|
|
|
936 /*
|
|
|
937 * How many 0 bits are there at least significant end of Uint32.
|
|
|
938 * Low performance, do not call often.
|
|
|
939 */
|
|
|
940 static int free_bits_at_bottom( Uint32 a )
|
|
|
941 {
|
|
|
942 /* assume char is 8 bits */
|
|
|
943 if(!a) return sizeof(Uint32) * 8;
|
|
|
944 if(((Sint32)a) & 1l) return 0;
|
|
|
945 return 1 + free_bits_at_bottom ( a >> 1);
|
|
|
946 }
|
|
|
947
|
|
|
948
|
|
|
949 SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
|
|
|
950 {
|
|
|
951 SDL_Overlay *overlay;
|
|
|
952 struct private_yuvhwdata *swdata;
|
|
|
953 int *Cr_r_tab;
|
|
|
954 int *Cr_g_tab;
|
|
|
955 int *Cb_g_tab;
|
|
|
956 int *Cb_b_tab;
|
|
|
957 Uint32 *r_2_pix_alloc;
|
|
|
958 Uint32 *g_2_pix_alloc;
|
|
|
959 Uint32 *b_2_pix_alloc;
|
|
|
960 int i, cpu_mmx;
|
|
|
961 int CR, CB;
|
|
|
962 Uint32 Rmask, Gmask, Bmask;
|
|
|
963
|
|
|
964 /* Only RGB packed pixel conversion supported */
|
|
|
965 if ( (display->format->BytesPerPixel != 2) &&
|
|
|
966 (display->format->BytesPerPixel != 3) &&
|
|
|
967 (display->format->BytesPerPixel != 4) ) {
|
|
|
968 SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces");
|
|
|
969 return(NULL);
|
|
|
970 }
|
|
|
971
|
|
|
972 /* Verify that we support the format */
|
|
|
973 switch (format) {
|
|
|
974 case SDL_YV12_OVERLAY:
|
|
|
975 case SDL_IYUV_OVERLAY:
|
|
|
976 case SDL_YUY2_OVERLAY:
|
|
|
977 case SDL_UYVY_OVERLAY:
|
|
|
978 case SDL_YVYU_OVERLAY:
|
|
|
979 break;
|
|
|
980 default:
|
|
|
981 SDL_SetError("Unsupported YUV format");
|
|
|
982 return(NULL);
|
|
|
983 }
|
|
|
984
|
|
|
985 /* Create the overlay structure */
|
|
|
986 overlay = (SDL_Overlay *)malloc(sizeof *overlay);
|
|
|
987 if ( overlay == NULL ) {
|
|
|
988 SDL_OutOfMemory();
|
|
|
989 return(NULL);
|
|
|
990 }
|
|
|
991 memset(overlay, 0, (sizeof *overlay));
|
|
|
992
|
|
|
993 /* Fill in the basic members */
|
|
|
994 overlay->format = format;
|
|
|
995 overlay->w = width;
|
|
|
996 overlay->h = height;
|
|
|
997
|
|
|
998 /* Set up the YUV surface function structure */
|
|
|
999 overlay->hwfuncs = &sw_yuvfuncs;
|
|
|
1000
|
|
|
1001 /* Create the pixel data and lookup tables */
|
|
|
1002 swdata = (struct private_yuvhwdata *)malloc(sizeof *swdata);
|
|
|
1003 overlay->hwdata = swdata;
|
|
|
1004 if ( swdata == NULL ) {
|
|
|
1005 SDL_OutOfMemory();
|
|
|
1006 SDL_FreeYUVOverlay(overlay);
|
|
|
1007 return(NULL);
|
|
|
1008 }
|
|
|
1009 swdata->stretch = NULL;
|
|
|
1010 swdata->display = display;
|
|
|
1011 swdata->pixels = (Uint8 *) malloc(width*height*2);
|
|
|
1012 swdata->colortab = (int *)malloc(4*256*sizeof(int));
|
|
|
1013 Cr_r_tab = &swdata->colortab[0*256];
|
|
|
1014 Cr_g_tab = &swdata->colortab[1*256];
|
|
|
1015 Cb_g_tab = &swdata->colortab[2*256];
|
|
|
1016 Cb_b_tab = &swdata->colortab[3*256];
|
|
|
1017 swdata->rgb_2_pix = (Uint32 *)malloc(3*768*sizeof(Uint32));
|
|
|
1018 r_2_pix_alloc = &swdata->rgb_2_pix[0*768];
|
|
|
1019 g_2_pix_alloc = &swdata->rgb_2_pix[1*768];
|
|
|
1020 b_2_pix_alloc = &swdata->rgb_2_pix[2*768];
|
|
|
1021 if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) {
|
|
|
1022 SDL_OutOfMemory();
|
|
|
1023 SDL_FreeYUVOverlay(overlay);
|
|
|
1024 return(NULL);
|
|
|
1025 }
|
|
|
1026
|
|
|
1027 /* Generate the tables for the display surface */
|
|
|
1028 for (i=0; i<256; i++) {
|
|
|
1029 /* Gamma correction (luminescence table) and chroma correction
|
|
|
1030 would be done here. See the Berkeley mpeg_play sources.
|
|
|
1031 */
|
|
|
1032 CB = CR = (i-128);
|
|
|
1033 Cr_r_tab[i] = (int) ( (0.419/0.299) * CR);
|
|
|
1034 Cr_g_tab[i] = (int) (-(0.299/0.419) * CR);
|
|
|
1035 Cb_g_tab[i] = (int) (-(0.114/0.331) * CB);
|
|
|
1036 Cb_b_tab[i] = (int) ( (0.587/0.331) * CB);
|
|
|
1037 }
|
|
|
1038
|
|
|
1039 /*
|
|
|
1040 * Set up entries 0-255 in rgb-to-pixel value tables.
|
|
|
1041 */
|
|
|
1042 Rmask = display->format->Rmask;
|
|
|
1043 Gmask = display->format->Gmask;
|
|
|
1044 Bmask = display->format->Bmask;
|
|
|
1045 for ( i=0; i<256; ++i ) {
|
|
|
1046 r_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Rmask));
|
|
|
1047 r_2_pix_alloc[i+256] <<= free_bits_at_bottom(Rmask);
|
|
|
1048 g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask));
|
|
|
1049 g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask);
|
|
|
1050 b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask));
|
|
|
1051 b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask);
|
|
|
1052 }
|
|
|
1053
|
|
|
1054 /*
|
|
|
1055 * If we have 16-bit output depth, then we double the value
|
|
|
1056 * in the top word. This means that we can write out both
|
|
|
1057 * pixels in the pixel doubling mode with one op. It is
|
|
|
1058 * harmless in the normal case as storing a 32-bit value
|
|
|
1059 * through a short pointer will lose the top bits anyway.
|
|
|
1060 */
|
|
|
1061 if( display->format->BytesPerPixel == 2 ) {
|
|
|
1062 for ( i=0; i<256; ++i ) {
|
|
|
1063 r_2_pix_alloc[i+256] |= (r_2_pix_alloc[i+256]) << 16;
|
|
|
1064 g_2_pix_alloc[i+256] |= (g_2_pix_alloc[i+256]) << 16;
|
|
|
1065 b_2_pix_alloc[i+256] |= (b_2_pix_alloc[i+256]) << 16;
|
|
|
1066 }
|
|
|
1067 }
|
|
|
1068
|
|
|
1069 /*
|
|
|
1070 * Spread out the values we have to the rest of the array so that
|
|
|
1071 * we do not need to check for overflow.
|
|
|
1072 */
|
|
|
1073 for ( i=0; i<256; ++i ) {
|
|
|
1074 r_2_pix_alloc[i] = r_2_pix_alloc[256];
|
|
|
1075 r_2_pix_alloc[i+512] = r_2_pix_alloc[511];
|
|
|
1076 g_2_pix_alloc[i] = g_2_pix_alloc[256];
|
|
|
1077 g_2_pix_alloc[i+512] = g_2_pix_alloc[511];
|
|
|
1078 b_2_pix_alloc[i] = b_2_pix_alloc[256];
|
|
|
1079 b_2_pix_alloc[i+512] = b_2_pix_alloc[511];
|
|
|
1080 }
|
|
|
1081
|
|
|
1082 /* You have chosen wisely... */
|
|
|
1083 switch (format) {
|
|
|
1084 case SDL_YV12_OVERLAY:
|
|
|
1085 case SDL_IYUV_OVERLAY:
|
|
|
1086 cpu_mmx = CPU_Flags() & MMX_CPU;
|
|
|
1087 if ( display->format->BytesPerPixel == 2 ) {
|
|
|
1088 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
|
|
|
1089 /* inline assembly functions */
|
|
|
1090 if ( cpu_mmx && (Rmask == 0xF800) &&
|
|
|
1091 (Gmask == 0x07E0) &&
|
|
|
1092 (Bmask == 0x001F) &&
|
|
|
1093 (width & 15) == 0) {
|
|
|
1094 /*printf("Using MMX 16-bit 565 dither\n");*/
|
|
|
1095 swdata->Display1X = Color565DitherYV12MMX1X;
|
|
|
1096 } else {
|
|
|
1097 /*printf("Using C 16-bit dither\n");*/
|
|
|
1098 swdata->Display1X = Color16DitherYV12Mod1X;
|
|
|
1099 }
|
|
|
1100 #else
|
|
|
1101 swdata->Display1X = Color16DitherYV12Mod1X;
|
|
|
1102 #endif
|
|
|
1103 swdata->Display2X = Color16DitherYV12Mod2X;
|
|
|
1104 }
|
|
|
1105 if ( display->format->BytesPerPixel == 3 ) {
|
|
|
1106 swdata->Display1X = Color24DitherYV12Mod1X;
|
|
|
1107 swdata->Display2X = Color24DitherYV12Mod2X;
|
|
|
1108 }
|
|
|
1109 if ( display->format->BytesPerPixel == 4 ) {
|
|
|
1110 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
|
|
|
1111 /* inline assembly functions */
|
|
|
1112 if ( cpu_mmx && (Rmask == 0x00FF0000) &&
|
|
|
1113 (Gmask == 0x0000FF00) &&
|
|
|
1114 (Bmask == 0x000000FF) &&
|
|
|
1115 (width & 15) == 0) {
|
|
|
1116 /*printf("Using MMX 32-bit dither\n");*/
|
|
|
1117 swdata->Display1X = ColorRGBDitherYV12MMX1X;
|
|
|
1118 } else {
|
|
|
1119 /*printf("Using C 32-bit dither\n");*/
|
|
|
1120 swdata->Display1X = Color32DitherYV12Mod1X;
|
|
|
1121 }
|
|
|
1122 #else
|
|
|
1123 swdata->Display1X = Color32DitherYV12Mod1X;
|
|
|
1124 #endif
|
|
|
1125 swdata->Display2X = Color32DitherYV12Mod2X;
|
|
|
1126 }
|
|
|
1127 break;
|
|
|
1128 case SDL_YUY2_OVERLAY:
|
|
|
1129 case SDL_UYVY_OVERLAY:
|
|
|
1130 case SDL_YVYU_OVERLAY:
|
|
|
1131 if ( display->format->BytesPerPixel == 2 ) {
|
|
|
1132 swdata->Display1X = Color16DitherYUY2Mod1X;
|
|
|
1133 swdata->Display2X = Color16DitherYUY2Mod2X;
|
|
|
1134 }
|
|
|
1135 if ( display->format->BytesPerPixel == 3 ) {
|
|
|
1136 swdata->Display1X = Color24DitherYUY2Mod1X;
|
|
|
1137 swdata->Display2X = Color24DitherYUY2Mod2X;
|
|
|
1138 }
|
|
|
1139 if ( display->format->BytesPerPixel == 4 ) {
|
|
|
1140 swdata->Display1X = Color32DitherYUY2Mod1X;
|
|
|
1141 swdata->Display2X = Color32DitherYUY2Mod2X;
|
|
|
1142 }
|
|
|
1143 break;
|
|
|
1144 default:
|
|
|
1145 /* We should never get here (caught above) */
|
|
|
1146 break;
|
|
|
1147 }
|
|
|
1148
|
|
|
1149 /* Find the pitch and offset values for the overlay */
|
|
|
1150 overlay->pitches = swdata->pitches;
|
|
|
1151 overlay->pixels = swdata->planes;
|
|
|
1152 switch (format) {
|
|
|
1153 case SDL_YV12_OVERLAY:
|
|
|
1154 case SDL_IYUV_OVERLAY:
|
|
|
1155 overlay->pitches[0] = overlay->w;
|
|
|
1156 overlay->pitches[1] = overlay->pitches[0] / 2;
|
|
|
1157 overlay->pitches[2] = overlay->pitches[0] / 2;
|
|
|
1158 overlay->pixels[0] = swdata->pixels;
|
|
|
1159 overlay->pixels[1] = overlay->pixels[0] +
|
|
|
1160 overlay->pitches[0] * overlay->h;
|
|
|
1161 overlay->pixels[2] = overlay->pixels[1] +
|
|
|
1162 overlay->pitches[1] * overlay->h / 2;
|
|
|
1163 overlay->planes = 3;
|
|
|
1164 break;
|
|
|
1165 case SDL_YUY2_OVERLAY:
|
|
|
1166 case SDL_UYVY_OVERLAY:
|
|
|
1167 case SDL_YVYU_OVERLAY:
|
|
|
1168 overlay->pitches[0] = overlay->w*2;
|
|
|
1169 overlay->pixels[0] = swdata->pixels;
|
|
|
1170 overlay->planes = 1;
|
|
|
1171 break;
|
|
|
1172 default:
|
|
|
1173 /* We should never get here (caught above) */
|
|
|
1174 break;
|
|
|
1175 }
|
|
|
1176
|
|
|
1177 /* We're all done.. */
|
|
|
1178 return(overlay);
|
|
|
1179 }
|
|
|
1180
|
|
|
1181 int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay)
|
|
|
1182 {
|
|
|
1183 return(0);
|
|
|
1184 }
|
|
|
1185
|
|
|
1186 void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay)
|
|
|
1187 {
|
|
|
1188 return;
|
|
|
1189 }
|
|
|
1190
|
|
|
1191 int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
|
|
|
1192 {
|
|
|
1193 struct private_yuvhwdata *swdata;
|
|
|
1194 SDL_Surface *stretch;
|
|
|
1195 SDL_Surface *display;
|
|
|
1196 int scale_2x;
|
|
|
1197 Uint8 *lum, *Cr, *Cb;
|
|
|
1198 Uint8 *dst;
|
|
|
1199 int mod;
|
|
|
1200
|
|
|
1201 swdata = overlay->hwdata;
|
|
|
1202 scale_2x = 0;
|
|
|
1203 stretch = 0;
|
|
|
1204 if ( (overlay->w != dstrect->w) || (overlay->h != dstrect->h) ) {
|
|
|
1205 if ( (dstrect->w == 2*overlay->w) &&
|
|
|
1206 (dstrect->h == 2*overlay->h) ) {
|
|
|
1207 scale_2x = 1;
|
|
|
1208 } else {
|
|
|
1209 if ( ! swdata->stretch ) {
|
|
|
1210 display = swdata->display;
|
|
|
1211 swdata->stretch = SDL_CreateRGBSurface(
|
|
|
1212 SDL_SWSURFACE,
|
|
|
1213 overlay->w, overlay->h,
|
|
|
1214 display->format->BitsPerPixel,
|
|
|
1215 display->format->Rmask,
|
|
|
1216 display->format->Gmask,
|
|
|
1217 display->format->Bmask, 0);
|
|
|
1218 if ( ! swdata->stretch ) {
|
|
|
1219 return(-1);
|
|
|
1220 }
|
|
|
1221 }
|
|
|
1222 stretch = swdata->stretch;
|
|
|
1223 }
|
|
|
1224 }
|
|
|
1225
|
|
|
1226 if ( stretch ) {
|
|
|
1227 display = stretch;
|
|
|
1228 } else {
|
|
|
1229 display = swdata->display;
|
|
|
1230 }
|
|
|
1231 switch (overlay->format) {
|
|
|
1232 case SDL_YV12_OVERLAY:
|
|
|
1233 lum = overlay->pixels[0];
|
|
|
1234 Cr = overlay->pixels[1];
|
|
|
1235 Cb = overlay->pixels[2];
|
|
|
1236 break;
|
|
|
1237 case SDL_IYUV_OVERLAY:
|
|
|
1238 lum = overlay->pixels[0];
|
|
|
1239 Cr = overlay->pixels[2];
|
|
|
1240 Cb = overlay->pixels[1];
|
|
|
1241 break;
|
|
|
1242 case SDL_YUY2_OVERLAY:
|
|
|
1243 lum = overlay->pixels[0];
|
|
|
1244 Cr = lum + 3;
|
|
|
1245 Cb = lum + 1;
|
|
|
1246 break;
|
|
|
1247 case SDL_UYVY_OVERLAY:
|
|
|
1248 lum = overlay->pixels[0]+1;
|
|
|
1249 Cr = lum + 1;
|
|
|
1250 Cb = lum - 1;
|
|
|
1251 break;
|
|
|
1252 case SDL_YVYU_OVERLAY:
|
|
|
1253 lum = overlay->pixels[0];
|
|
|
1254 Cr = lum + 1;
|
|
|
1255 Cb = lum + 3;
|
|
|
1256 break;
|
|
|
1257 default:
|
|
|
1258 SDL_SetError("Unsupported YUV format in blit (??)");
|
|
|
1259 return(-1);
|
|
|
1260 }
|
|
|
1261 if ( SDL_MUSTLOCK(display) ) {
|
|
|
1262 if ( SDL_LockSurface(display) < 0 ) {
|
|
|
1263 return(-1);
|
|
|
1264 }
|
|
|
1265 }
|
|
|
1266 if ( stretch ) {
|
|
|
1267 dst = (Uint8 *)stretch->pixels;
|
|
|
1268 } else {
|
|
|
1269 dst = (Uint8 *)display->pixels
|
|
|
1270 + dstrect->x * display->format->BytesPerPixel
|
|
|
1271 + dstrect->y * display->pitch;
|
|
|
1272 }
|
|
|
1273 mod = (display->pitch / display->format->BytesPerPixel);
|
|
|
1274
|
|
|
1275 if ( scale_2x ) {
|
|
|
1276 mod -= (overlay->w * 2);
|
|
|
1277 swdata->Display2X(swdata->colortab, swdata->rgb_2_pix,
|
|
|
1278 lum, Cr, Cb, dst, overlay->h, overlay->w,mod);
|
|
|
1279 } else {
|
|
|
1280 mod -= overlay->w;
|
|
|
1281 swdata->Display1X(swdata->colortab, swdata->rgb_2_pix,
|
|
|
1282 lum, Cr, Cb, dst, overlay->h, overlay->w,mod);
|
|
|
1283 }
|
|
|
1284 if ( SDL_MUSTLOCK(display) ) {
|
|
|
1285 SDL_UnlockSurface(display);
|
|
|
1286 }
|
|
|
1287 if ( stretch ) {
|
|
|
1288 display = swdata->display;
|
|
|
1289 SDL_SoftStretch(stretch, NULL, display, dstrect);
|
|
|
1290 }
|
|
|
1291 SDL_UpdateRects(display, 1, dstrect);
|
|
|
1292
|
|
|
1293 return(0);
|
|
|
1294 }
|
|
|
1295
|
|
|
1296 void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay)
|
|
|
1297 {
|
|
|
1298 struct private_yuvhwdata *swdata;
|
|
|
1299
|
|
|
1300 swdata = overlay->hwdata;
|
|
|
1301 if ( swdata ) {
|
|
|
1302 if ( swdata->pixels ) {
|
|
|
1303 free(swdata->pixels);
|
|
|
1304 }
|
|
|
1305 if ( swdata->colortab ) {
|
|
|
1306 free(swdata->colortab);
|
|
|
1307 }
|
|
|
1308 if ( swdata->rgb_2_pix ) {
|
|
|
1309 free(swdata->rgb_2_pix);
|
|
|
1310 }
|
|
|
1311 free(swdata);
|
|
|
1312 }
|
|
|
1313 }
|
