annotate src/video/SDL_yuv_sw.c @ 1869:65800e7f7146

Date: Fri, 9 Jun 2006 11:35:23 +0300 From: "Janne Junnila" Subject: [SDL] SDL_SetGamma bug You can't set the the gamma 'brighter' than 1.0. There's a patch attached.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 20 Jun 2006 06:50:42 +0000
parents 8a858076f39d
children 782fd950bd46 c121d94672cb f420bba13676
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* This is the software implementation of the YUV video overlay support */
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25
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26 /* This code was derived from code carrying the following copyright notices:
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27
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28 * Copyright (c) 1995 The Regents of the University of California.
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29 * All rights reserved.
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30 *
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31 * Permission to use, copy, modify, and distribute this software and its
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32 * documentation for any purpose, without fee, and without written agreement is
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33 * hereby granted, provided that the above copyright notice and the following
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34 * two paragraphs appear in all copies of this software.
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35 *
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36 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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37 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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38 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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39 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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40 *
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41 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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42 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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43 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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44 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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45 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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46
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47 * Copyright (c) 1995 Erik Corry
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48 * All rights reserved.
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49 *
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50 * Permission to use, copy, modify, and distribute this software and its
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51 * documentation for any purpose, without fee, and without written agreement is
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52 * hereby granted, provided that the above copyright notice and the following
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53 * two paragraphs appear in all copies of this software.
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54 *
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55 * IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
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56 * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
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57 * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED
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58 * OF THE POSSIBILITY OF SUCH DAMAGE.
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59 *
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60 * ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
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61 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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62 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
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63 * BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
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64 * UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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65
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66 * Portions of this software Copyright (c) 1995 Brown University.
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67 * All rights reserved.
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68 *
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69 * Permission to use, copy, modify, and distribute this software and its
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70 * documentation for any purpose, without fee, and without written agreement
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71 * is hereby granted, provided that the above copyright notice and the
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72 * following two paragraphs appear in all copies of this software.
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73 *
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74 * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR
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75 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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76 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN
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77 * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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78 *
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79 * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
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80 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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81 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
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82 * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
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83 * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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84 */
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85
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86 #include "SDL_video.h"
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87 #include "SDL_cpuinfo.h"
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88 #include "SDL_stretch_c.h"
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89 #include "SDL_yuvfuncs.h"
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90 #include "SDL_yuv_sw_c.h"
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91
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92 /* The functions used to manipulate software video overlays */
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93 static struct private_yuvhwfuncs sw_yuvfuncs = {
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94 SDL_LockYUV_SW,
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95 SDL_UnlockYUV_SW,
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96 SDL_DisplayYUV_SW,
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97 SDL_FreeYUV_SW
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98 };
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99
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100 /* RGB conversion lookup tables */
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101 struct private_yuvhwdata {
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102 SDL_Surface *stretch;
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103 SDL_Surface *display;
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104 Uint8 *pixels;
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105 int *colortab;
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106 Uint32 *rgb_2_pix;
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107 void (*Display1X)(int *colortab, Uint32 *rgb_2_pix,
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108 unsigned char *lum, unsigned char *cr,
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109 unsigned char *cb, unsigned char *out,
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110 int rows, int cols, int mod );
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111 void (*Display2X)(int *colortab, Uint32 *rgb_2_pix,
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112 unsigned char *lum, unsigned char *cr,
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113 unsigned char *cb, unsigned char *out,
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114 int rows, int cols, int mod );
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115
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116 /* These are just so we don't have to allocate them separately */
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117 Uint16 pitches[3];
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118 Uint8 *planes[3];
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119 };
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120
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121
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122 /* The colorspace conversion functions */
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123
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124 #if 0 /*defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES*/
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125 extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
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126 unsigned char *lum, unsigned char *cr,
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127 unsigned char *cb, unsigned char *out,
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128 int rows, int cols, int mod );
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129 extern void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
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130 unsigned char *lum, unsigned char *cr,
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131 unsigned char *cb, unsigned char *out,
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132 int rows, int cols, int mod );
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133 #endif
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134
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135 static void Color16DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
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136 unsigned char *lum, unsigned char *cr,
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137 unsigned char *cb, unsigned char *out,
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138 int rows, int cols, int mod )
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139 {
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140 unsigned short* row1;
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141 unsigned short* row2;
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142 unsigned char* lum2;
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143 int x, y;
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144 int cr_r;
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145 int crb_g;
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146 int cb_b;
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147 int cols_2 = cols / 2;
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148
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149 row1 = (unsigned short*) out;
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150 row2 = row1 + cols + mod;
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151 lum2 = lum + cols;
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152
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153 mod += cols + mod;
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154
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155 y = rows / 2;
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156 while( y-- )
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157 {
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158 x = cols_2;
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159 while( x-- )
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160 {
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161 register int L;
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162
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163 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
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164 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
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165 + colortab[ *cb + 2*256 ];
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166 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
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167 ++cr; ++cb;
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168
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169 L = *lum++;
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170 *row1++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
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171 rgb_2_pix[ L + crb_g ] |
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172 rgb_2_pix[ L + cb_b ]);
0
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173
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174 L = *lum++;
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175 *row1++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
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176 rgb_2_pix[ L + crb_g ] |
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177 rgb_2_pix[ L + cb_b ]);
0
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178
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179
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180 /* Now, do second row. */
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181
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182 L = *lum2++;
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183 *row2++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
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184 rgb_2_pix[ L + crb_g ] |
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185 rgb_2_pix[ L + cb_b ]);
0
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186
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187 L = *lum2++;
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188 *row2++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
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189 rgb_2_pix[ L + crb_g ] |
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190 rgb_2_pix[ L + cb_b ]);
0
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191 }
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192
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193 /*
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194 * These values are at the start of the next line, (due
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195 * to the ++'s above),but they need to be at the start
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196 * of the line after that.
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197 */
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198 lum += cols;
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199 lum2 += cols;
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200 row1 += mod;
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201 row2 += mod;
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202 }
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203 }
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204
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205 static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
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206 unsigned char *lum, unsigned char *cr,
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207 unsigned char *cb, unsigned char *out,
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208 int rows, int cols, int mod )
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209 {
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210 unsigned int value;
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211 unsigned char* row1;
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212 unsigned char* row2;
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213 unsigned char* lum2;
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214 int x, y;
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215 int cr_r;
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216 int crb_g;
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217 int cb_b;
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218 int cols_2 = cols / 2;
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219
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220 row1 = out;
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221 row2 = row1 + cols*3 + mod*3;
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222 lum2 = lum + cols;
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223
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224 mod += cols + mod;
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225 mod *= 3;
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226
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227 y = rows / 2;
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228 while( y-- )
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229 {
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230 x = cols_2;
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231 while( x-- )
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232 {
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233 register int L;
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234
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235 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
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236 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
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237 + colortab[ *cb + 2*256 ];
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238 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
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239 ++cr; ++cb;
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240
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241 L = *lum++;
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242 value = (rgb_2_pix[ L + cr_r ] |
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243 rgb_2_pix[ L + crb_g ] |
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244 rgb_2_pix[ L + cb_b ]);
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245 *row1++ = (value ) & 0xFF;
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246 *row1++ = (value >> 8) & 0xFF;
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247 *row1++ = (value >> 16) & 0xFF;
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248
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249 L = *lum++;
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250 value = (rgb_2_pix[ L + cr_r ] |
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251 rgb_2_pix[ L + crb_g ] |
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252 rgb_2_pix[ L + cb_b ]);
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253 *row1++ = (value ) & 0xFF;
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254 *row1++ = (value >> 8) & 0xFF;
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255 *row1++ = (value >> 16) & 0xFF;
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256
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257
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258 /* Now, do second row. */
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259
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260 L = *lum2++;
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261 value = (rgb_2_pix[ L + cr_r ] |
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262 rgb_2_pix[ L + crb_g ] |
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263 rgb_2_pix[ L + cb_b ]);
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264 *row2++ = (value ) & 0xFF;
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265 *row2++ = (value >> 8) & 0xFF;
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266 *row2++ = (value >> 16) & 0xFF;
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267
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268 L = *lum2++;
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269 value = (rgb_2_pix[ L + cr_r ] |
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270 rgb_2_pix[ L + crb_g ] |
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271 rgb_2_pix[ L + cb_b ]);
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272 *row2++ = (value ) & 0xFF;
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273 *row2++ = (value >> 8) & 0xFF;
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274 *row2++ = (value >> 16) & 0xFF;
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275 }
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276
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277 /*
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278 * These values are at the start of the next line, (due
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279 * to the ++'s above),but they need to be at the start
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280 * of the line after that.
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281 */
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282 lum += cols;
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283 lum2 += cols;
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284 row1 += mod;
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285 row2 += mod;
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286 }
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287 }
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288
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289 static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
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290 unsigned char *lum, unsigned char *cr,
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291 unsigned char *cb, unsigned char *out,
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292 int rows, int cols, int mod )
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293 {
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294 unsigned int* row1;
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295 unsigned int* row2;
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296 unsigned char* lum2;
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297 int x, y;
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298 int cr_r;
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299 int crb_g;
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300 int cb_b;
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301 int cols_2 = cols / 2;
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302
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303 row1 = (unsigned int*) out;
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304 row2 = row1 + cols + mod;
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305 lum2 = lum + cols;
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306
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307 mod += cols + mod;
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308
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309 y = rows / 2;
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310 while( y-- )
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311 {
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312 x = cols_2;
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313 while( x-- )
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314 {
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315 register int L;
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316
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317 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
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318 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
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319 + colortab[ *cb + 2*256 ];
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320 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
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321 ++cr; ++cb;
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322
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323 L = *lum++;
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324 *row1++ = (rgb_2_pix[ L + cr_r ] |
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 rgb_2_pix[ L + crb_g ] |
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 rgb_2_pix[ L + cb_b ]);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 L = *lum++;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 *row1++ = (rgb_2_pix[ L + cr_r ] |
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 rgb_2_pix[ L + crb_g ] |
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 rgb_2_pix[ L + cb_b ]);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 /* Now, do second row. */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 L = *lum2++;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 *row2++ = (rgb_2_pix[ L + cr_r ] |
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 rgb_2_pix[ L + crb_g ] |
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 rgb_2_pix[ L + cb_b ]);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 L = *lum2++;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 *row2++ = (rgb_2_pix[ L + cr_r ] |
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 rgb_2_pix[ L + crb_g ] |
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 rgb_2_pix[ L + cb_b ]);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 /*
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 * These values are at the start of the next line, (due
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 * of the line after that.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 lum += cols;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 lum2 += cols;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 row1 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 row2 += mod;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 * In this function I make use of a nasty trick. The tables have the lower
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 * 16 bits replicated in the upper 16. This means I can write ints and get
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 * the horisontal doubling for free (almost).
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 unsigned char *lum, unsigned char *cr,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 unsigned char *cb, unsigned char *out,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 int rows, int cols, int mod )
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 unsigned int* row1 = (unsigned int*) out;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 const int next_row = cols+(mod/2);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 unsigned int* row2 = row1 + 2*next_row;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 unsigned char* lum2;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
373 int x, y;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
374 int cr_r;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375 int crb_g;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376 int cb_b;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 int cols_2 = cols / 2;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 lum2 = lum + cols;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 mod = (next_row * 3) + (mod/2);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 y = rows / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 while( y-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 x = cols_2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 while( x-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 + colortab[ *cb + 2*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 ++cr; ++cb;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397 L = *lum++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 row1++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 L = *lum++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 row1++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 /* Now, do second row. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 L = *lum2++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 row2++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 L = *lum2++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 row2++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 * These values are at the start of the next line, (due
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 * of the line after that.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 lum += cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 lum2 += cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 row1 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 row2 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 static void Color24DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 unsigned char *lum, unsigned char *cr,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 unsigned char *cb, unsigned char *out,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 int rows, int cols, int mod )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 unsigned int value;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 unsigned char* row1 = out;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 const int next_row = (cols*2 + mod) * 3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 unsigned char* row2 = row1 + 2*next_row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 unsigned char* lum2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 lum2 = lum + cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 mod = next_row*3 + mod*3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 y = rows / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 while( y-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 x = cols_2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 while( x-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 + colortab[ *cb + 2*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 ++cr; ++cb;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 L = *lum++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 value = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 (value ) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 (value >> 8) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 (value >> 16) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 row1 += 2*3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 L = *lum++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 value = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 (value ) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 (value >> 8) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 (value >> 16) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 row1 += 2*3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 /* Now, do second row. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 L = *lum2++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 value = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 (value ) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 (value >> 8) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507 (value >> 16) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 row2 += 2*3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 L = *lum2++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 value = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515 (value ) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 (value >> 8) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 (value >> 16) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 row2 += 2*3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 * These values are at the start of the next line, (due
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 * of the line after that.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 lum += cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 lum2 += cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 row1 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 row2 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 static void Color32DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 unsigned char *lum, unsigned char *cr,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 unsigned char *cb, unsigned char *out,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 int rows, int cols, int mod )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 unsigned int* row1 = (unsigned int*) out;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 const int next_row = cols*2+mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 unsigned int* row2 = row1 + 2*next_row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 unsigned char* lum2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 lum2 = lum + cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 mod = (next_row * 3) + mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 y = rows / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 while( y-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 x = cols_2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 while( x-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564 + colortab[ *cb + 2*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566 ++cr; ++cb;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 L = *lum++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 row1 += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575 L = *lum++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577 (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
578 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580 row1 += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
581
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
583 /* Now, do second row. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
585 L = *lum2++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
590 row2 += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592 L = *lum2++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
593 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594 (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597 row2 += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
601 * These values are at the start of the next line, (due
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603 * of the line after that.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605 lum += cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606 lum2 += cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 row1 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608 row2 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612 static void Color16DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613 unsigned char *lum, unsigned char *cr,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
614 unsigned char *cb, unsigned char *out,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 int rows, int cols, int mod )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617 unsigned short* row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 row = (unsigned short*) out;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 y = rows;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627 while( y-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
628 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 x = cols_2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
630 while( x-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
634 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
636 + colortab[ *cb + 2*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
637 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 cr += 4; cb += 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
640 L = *lum; lum += 2;
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1413
diff changeset
641 *row++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1413
diff changeset
642 rgb_2_pix[ L + crb_g ] |
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1413
diff changeset
643 rgb_2_pix[ L + cb_b ]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
644
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
645 L = *lum; lum += 2;
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1413
diff changeset
646 *row++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1413
diff changeset
647 rgb_2_pix[ L + crb_g ] |
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1413
diff changeset
648 rgb_2_pix[ L + cb_b ]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
649
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
650 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
651
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
652 row += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
653 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
654 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
655
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
656 static void Color24DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
657 unsigned char *lum, unsigned char *cr,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
658 unsigned char *cb, unsigned char *out,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
659 int rows, int cols, int mod )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
660 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
661 unsigned int value;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
662 unsigned char* row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
663 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
664 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
665 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
666 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
667 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
668
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
669 row = (unsigned char*) out;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
670 mod *= 3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
671 y = rows;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
672 while( y-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
673 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
674 x = cols_2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
675 while( x-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
676 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
677 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
678
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
679 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
680 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
681 + colortab[ *cb + 2*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
682 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
683 cr += 4; cb += 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
684
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
685 L = *lum; lum += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
686 value = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
687 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
688 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
689 *row++ = (value ) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
690 *row++ = (value >> 8) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
691 *row++ = (value >> 16) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
692
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
693 L = *lum; lum += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
694 value = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
695 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
696 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
697 *row++ = (value ) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
698 *row++ = (value >> 8) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
699 *row++ = (value >> 16) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
700
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
701 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
702 row += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
703 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
704 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
705
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
706 static void Color32DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
707 unsigned char *lum, unsigned char *cr,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
708 unsigned char *cb, unsigned char *out,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
709 int rows, int cols, int mod )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
710 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
711 unsigned int* row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
712 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
713 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
714 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
715 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
716 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
717
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
718 row = (unsigned int*) out;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
719 y = rows;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
720 while( y-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
721 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
722 x = cols_2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
723 while( x-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
724 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
725 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
726
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
727 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
728 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
729 + colortab[ *cb + 2*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
730 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
731 cr += 4; cb += 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
732
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
733 L = *lum; lum += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
734 *row++ = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
735 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
736 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
737
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
738 L = *lum; lum += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
739 *row++ = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
740 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
741 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
742
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
743
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
744 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
745 row += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
746 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
747 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
748
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
749 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
750 * In this function I make use of a nasty trick. The tables have the lower
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
751 * 16 bits replicated in the upper 16. This means I can write ints and get
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
752 * the horisontal doubling for free (almost).
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
753 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
754 static void Color16DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
755 unsigned char *lum, unsigned char *cr,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
756 unsigned char *cb, unsigned char *out,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
757 int rows, int cols, int mod )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
758 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
759 unsigned int* row = (unsigned int*) out;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
760 const int next_row = cols+(mod/2);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
761 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
762 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
763 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
764 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
765 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
766
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
767 y = rows;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
768 while( y-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
769 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
770 x = cols_2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
771 while( x-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
772 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
773 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
774
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
775 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
776 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
777 + colortab[ *cb + 2*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
778 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
779 cr += 4; cb += 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
780
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
781 L = *lum; lum += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
782 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
783 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
784 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
785 row++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
786
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
787 L = *lum; lum += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
788 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
789 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
790 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
791 row++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
792
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
793 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
794 row += next_row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
795 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
796 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
797
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
798 static void Color24DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
799 unsigned char *lum, unsigned char *cr,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
800 unsigned char *cb, unsigned char *out,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
801 int rows, int cols, int mod )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
802 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
803 unsigned int value;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
804 unsigned char* row = out;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
805 const int next_row = (cols*2 + mod) * 3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
806 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
807 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
808 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
809 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
810 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
811 y = rows;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
812 while( y-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
813 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
814 x = cols_2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
815 while( x-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
816 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
817 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
818
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
819 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
820 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
821 + colortab[ *cb + 2*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
822 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
823 cr += 4; cb += 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
824
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
825 L = *lum; lum += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
826 value = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
827 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
828 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
829 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
830 (value ) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
831 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
832 (value >> 8) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
833 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
834 (value >> 16) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
835 row += 2*3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
836
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
837 L = *lum; lum += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
838 value = (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
839 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
840 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
841 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
842 (value ) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
843 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
844 (value >> 8) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
845 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
846 (value >> 16) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
847 row += 2*3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
848
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
849 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
850 row += next_row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
851 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
852 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
853
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
854 static void Color32DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
855 unsigned char *lum, unsigned char *cr,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
856 unsigned char *cb, unsigned char *out,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
857 int rows, int cols, int mod )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
858 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
859 unsigned int* row = (unsigned int*) out;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
860 const int next_row = cols*2+mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
861 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
862 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
863 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
864 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
865 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
866 mod+=mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
867 y = rows;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
868 while( y-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
869 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
870 x = cols_2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
871 while( x-- )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
872 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
873 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
874
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
875 cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
876 crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
877 + colortab[ *cb + 2*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
878 cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
879 cr += 4; cb += 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
880
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
881 L = *lum; lum += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
882 row[0] = row[1] = row[next_row] = row[next_row+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
883 (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
884 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
885 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
886 row += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
887
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
888 L = *lum; lum += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
889 row[0] = row[1] = row[next_row] = row[next_row+1] =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
890 (rgb_2_pix[ L + cr_r ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
891 rgb_2_pix[ L + crb_g ] |
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
892 rgb_2_pix[ L + cb_b ]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
893 row += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
894
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
895
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
896 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
897
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
898 row += next_row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
899 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
900 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
901
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
902 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
903 * How many 1 bits are there in the Uint32.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
904 * Low performance, do not call often.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
905 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
906 static int number_of_bits_set( Uint32 a )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
907 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
908 if(!a) return 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
909 if(a & 1) return 1 + number_of_bits_set(a >> 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
910 return(number_of_bits_set(a >> 1));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
911 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
912
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
913 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
914 * How many 0 bits are there at least significant end of Uint32.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
915 * Low performance, do not call often.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
916 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
917 static int free_bits_at_bottom( Uint32 a )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
918 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
919 /* assume char is 8 bits */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
920 if(!a) return sizeof(Uint32) * 8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
921 if(((Sint32)a) & 1l) return 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
922 return 1 + free_bits_at_bottom ( a >> 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
923 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
924
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
925
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
926 SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
927 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
928 SDL_Overlay *overlay;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
929 struct private_yuvhwdata *swdata;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
930 int *Cr_r_tab;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
931 int *Cr_g_tab;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
932 int *Cb_g_tab;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
933 int *Cb_b_tab;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
934 Uint32 *r_2_pix_alloc;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
935 Uint32 *g_2_pix_alloc;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
936 Uint32 *b_2_pix_alloc;
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 366
diff changeset
937 int i;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
938 int CR, CB;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
939 Uint32 Rmask, Gmask, Bmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
940
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
941 /* Only RGB packed pixel conversion supported */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
942 if ( (display->format->BytesPerPixel != 2) &&
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
943 (display->format->BytesPerPixel != 3) &&
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
944 (display->format->BytesPerPixel != 4) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
945 SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
946 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
947 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
948
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
949 /* Verify that we support the format */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
950 switch (format) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
951 case SDL_YV12_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
952 case SDL_IYUV_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
953 case SDL_YUY2_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
954 case SDL_UYVY_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
955 case SDL_YVYU_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
956 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
957 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
958 SDL_SetError("Unsupported YUV format");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
959 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
960 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
961
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
962 /* Create the overlay structure */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
963 overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
964 if ( overlay == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
965 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
966 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
967 }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
968 SDL_memset(overlay, 0, (sizeof *overlay));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
969
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
970 /* Fill in the basic members */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
971 overlay->format = format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
972 overlay->w = width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
973 overlay->h = height;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
974
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
975 /* Set up the YUV surface function structure */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
976 overlay->hwfuncs = &sw_yuvfuncs;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
977
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
978 /* Create the pixel data and lookup tables */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
979 swdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *swdata);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
980 overlay->hwdata = swdata;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
981 if ( swdata == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
982 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
983 SDL_FreeYUVOverlay(overlay);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
984 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
985 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
986 swdata->stretch = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
987 swdata->display = display;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
988 swdata->pixels = (Uint8 *) SDL_malloc(width*height*2);
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
989 swdata->colortab = (int *)SDL_malloc(4*256*sizeof(int));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
990 Cr_r_tab = &swdata->colortab[0*256];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
991 Cr_g_tab = &swdata->colortab[1*256];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
992 Cb_g_tab = &swdata->colortab[2*256];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
993 Cb_b_tab = &swdata->colortab[3*256];
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
994 swdata->rgb_2_pix = (Uint32 *)SDL_malloc(3*768*sizeof(Uint32));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
995 r_2_pix_alloc = &swdata->rgb_2_pix[0*768];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
996 g_2_pix_alloc = &swdata->rgb_2_pix[1*768];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
997 b_2_pix_alloc = &swdata->rgb_2_pix[2*768];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
998 if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
999 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1000 SDL_FreeYUVOverlay(overlay);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1001 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1002 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1003
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1004 /* Generate the tables for the display surface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1005 for (i=0; i<256; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1006 /* Gamma correction (luminescence table) and chroma correction
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1007 would be done here. See the Berkeley mpeg_play sources.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1008 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1009 CB = CR = (i-128);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1010 Cr_r_tab[i] = (int) ( (0.419/0.299) * CR);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1011 Cr_g_tab[i] = (int) (-(0.299/0.419) * CR);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1012 Cb_g_tab[i] = (int) (-(0.114/0.331) * CB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1013 Cb_b_tab[i] = (int) ( (0.587/0.331) * CB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1014 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1015
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1016 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1017 * Set up entries 0-255 in rgb-to-pixel value tables.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1018 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1019 Rmask = display->format->Rmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1020 Gmask = display->format->Gmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1021 Bmask = display->format->Bmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1022 for ( i=0; i<256; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1023 r_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Rmask));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1024 r_2_pix_alloc[i+256] <<= free_bits_at_bottom(Rmask);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1025 g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1026 g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1027 b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1028 b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1029 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1030
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1031 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1032 * If we have 16-bit output depth, then we double the value
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1033 * in the top word. This means that we can write out both
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1034 * pixels in the pixel doubling mode with one op. It is
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1035 * harmless in the normal case as storing a 32-bit value
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1036 * through a short pointer will lose the top bits anyway.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1037 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1038 if( display->format->BytesPerPixel == 2 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1039 for ( i=0; i<256; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1040 r_2_pix_alloc[i+256] |= (r_2_pix_alloc[i+256]) << 16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1041 g_2_pix_alloc[i+256] |= (g_2_pix_alloc[i+256]) << 16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1042 b_2_pix_alloc[i+256] |= (b_2_pix_alloc[i+256]) << 16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1043 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1044 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1045
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1046 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1047 * Spread out the values we have to the rest of the array so that
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1048 * we do not need to check for overflow.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1049 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1050 for ( i=0; i<256; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1051 r_2_pix_alloc[i] = r_2_pix_alloc[256];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1052 r_2_pix_alloc[i+512] = r_2_pix_alloc[511];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1053 g_2_pix_alloc[i] = g_2_pix_alloc[256];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1054 g_2_pix_alloc[i+512] = g_2_pix_alloc[511];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1055 b_2_pix_alloc[i] = b_2_pix_alloc[256];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1056 b_2_pix_alloc[i+512] = b_2_pix_alloc[511];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1057 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1058
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1059 /* You have chosen wisely... */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1060 switch (format) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1061 case SDL_YV12_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1062 case SDL_IYUV_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1063 if ( display->format->BytesPerPixel == 2 ) {
1413
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
1064 #if 0 /*defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES*/
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1065 /* inline assembly functions */
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 366
diff changeset
1066 if ( SDL_HasMMX() && (Rmask == 0xF800) &&
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 366
diff changeset
1067 (Gmask == 0x07E0) &&
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 366
diff changeset
1068 (Bmask == 0x001F) &&
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 366
diff changeset
1069 (width & 15) == 0) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1070 /*printf("Using MMX 16-bit 565 dither\n");*/
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1071 swdata->Display1X = Color565DitherYV12MMX1X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1072 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1073 /*printf("Using C 16-bit dither\n");*/
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1074 swdata->Display1X = Color16DitherYV12Mod1X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1075 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1076 #else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1077 swdata->Display1X = Color16DitherYV12Mod1X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1078 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1079 swdata->Display2X = Color16DitherYV12Mod2X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1080 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1081 if ( display->format->BytesPerPixel == 3 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1082 swdata->Display1X = Color24DitherYV12Mod1X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1083 swdata->Display2X = Color24DitherYV12Mod2X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1084 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1085 if ( display->format->BytesPerPixel == 4 ) {
1413
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
1086 #if 0 /*defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES*/
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1087 /* inline assembly functions */
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 366
diff changeset
1088 if ( SDL_HasMMX() && (Rmask == 0x00FF0000) &&
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 366
diff changeset
1089 (Gmask == 0x0000FF00) &&
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 366
diff changeset
1090 (Bmask == 0x000000FF) &&
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 366
diff changeset
1091 (width & 15) == 0) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1092 /*printf("Using MMX 32-bit dither\n");*/
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1093 swdata->Display1X = ColorRGBDitherYV12MMX1X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1094 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1095 /*printf("Using C 32-bit dither\n");*/
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1096 swdata->Display1X = Color32DitherYV12Mod1X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1097 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1098 #else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1099 swdata->Display1X = Color32DitherYV12Mod1X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1100 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1101 swdata->Display2X = Color32DitherYV12Mod2X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1102 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1103 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1104 case SDL_YUY2_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1105 case SDL_UYVY_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1106 case SDL_YVYU_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1107 if ( display->format->BytesPerPixel == 2 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1108 swdata->Display1X = Color16DitherYUY2Mod1X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1109 swdata->Display2X = Color16DitherYUY2Mod2X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1110 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1111 if ( display->format->BytesPerPixel == 3 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1112 swdata->Display1X = Color24DitherYUY2Mod1X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1113 swdata->Display2X = Color24DitherYUY2Mod2X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1114 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1115 if ( display->format->BytesPerPixel == 4 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1116 swdata->Display1X = Color32DitherYUY2Mod1X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1117 swdata->Display2X = Color32DitherYUY2Mod2X;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1118 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1119 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1120 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1121 /* We should never get here (caught above) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1122 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1123 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1124
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1125 /* Find the pitch and offset values for the overlay */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1126 overlay->pitches = swdata->pitches;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1127 overlay->pixels = swdata->planes;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1128 switch (format) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1129 case SDL_YV12_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1130 case SDL_IYUV_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1131 overlay->pitches[0] = overlay->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1132 overlay->pitches[1] = overlay->pitches[0] / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1133 overlay->pitches[2] = overlay->pitches[0] / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1134 overlay->pixels[0] = swdata->pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1135 overlay->pixels[1] = overlay->pixels[0] +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1136 overlay->pitches[0] * overlay->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1137 overlay->pixels[2] = overlay->pixels[1] +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1138 overlay->pitches[1] * overlay->h / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1139 overlay->planes = 3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1140 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1141 case SDL_YUY2_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1142 case SDL_UYVY_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1143 case SDL_YVYU_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1144 overlay->pitches[0] = overlay->w*2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1145 overlay->pixels[0] = swdata->pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1146 overlay->planes = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1147 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1148 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1149 /* We should never get here (caught above) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1150 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1151 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1152
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1153 /* We're all done.. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1154 return(overlay);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1155 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1156
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1157 int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1158 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1159 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1160 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1161
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1162 void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1163 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1164 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1165 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1166
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1167 int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1168 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1169 struct private_yuvhwdata *swdata;
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1170 int stretch;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1171 int scale_2x;
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1172 SDL_Surface *display;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1173 Uint8 *lum, *Cr, *Cb;
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1174 Uint8 *dstp;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1175 int mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1176
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1177 swdata = overlay->hwdata;
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1178 stretch = 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1179 scale_2x = 0;
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1180 if ( src->x || src->y || src->w < overlay->w || src->h < overlay->h ) {
1644
8a858076f39d Added a note so I remember what the heck I was doing later. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1643
diff changeset
1181 /* The source rectangle has been clipped.
8a858076f39d Added a note so I remember what the heck I was doing later. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1643
diff changeset
1182 Using a scratch surface is easier than adding clipped
8a858076f39d Added a note so I remember what the heck I was doing later. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1643
diff changeset
1183 source support to all the blitters, plus that would
8a858076f39d Added a note so I remember what the heck I was doing later. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1643
diff changeset
1184 slow them down in the general unclipped case.
8a858076f39d Added a note so I remember what the heck I was doing later. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1643
diff changeset
1185 */
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1186 stretch = 1;
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1187 } else if ( (src->w != dst->w) || (src->h != dst->h) ) {
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1188 if ( (dst->w == 2*src->w) &&
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1189 (dst->h == 2*src->h) ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1190 scale_2x = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1191 } else {
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1192 stretch = 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1193 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1194 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1195 if ( stretch ) {
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1196 if ( ! swdata->stretch ) {
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1197 display = swdata->display;
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1198 swdata->stretch = SDL_CreateRGBSurface(
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1199 SDL_SWSURFACE,
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1200 overlay->w, overlay->h,
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1201 display->format->BitsPerPixel,
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1202 display->format->Rmask,
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1203 display->format->Gmask,
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1204 display->format->Bmask, 0);
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1205 if ( ! swdata->stretch ) {
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1206 return(-1);
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1207 }
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1208 }
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1209 display = swdata->stretch;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1210 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1211 display = swdata->display;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1212 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1213 switch (overlay->format) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1214 case SDL_YV12_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1215 lum = overlay->pixels[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1216 Cr = overlay->pixels[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1217 Cb = overlay->pixels[2];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1218 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1219 case SDL_IYUV_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1220 lum = overlay->pixels[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1221 Cr = overlay->pixels[2];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1222 Cb = overlay->pixels[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1223 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1224 case SDL_YUY2_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1225 lum = overlay->pixels[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1226 Cr = lum + 3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1227 Cb = lum + 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1228 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1229 case SDL_UYVY_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1230 lum = overlay->pixels[0]+1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1231 Cr = lum + 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1232 Cb = lum - 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1233 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1234 case SDL_YVYU_OVERLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1235 lum = overlay->pixels[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1236 Cr = lum + 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1237 Cb = lum + 3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1238 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1239 default:
292
eadc0746dfaf Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
1240 SDL_SetError("Unsupported YUV format in blit");
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1241 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1242 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1243 if ( SDL_MUSTLOCK(display) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1244 if ( SDL_LockSurface(display) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1245 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1246 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1247 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1248 if ( stretch ) {
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1249 dstp = (Uint8 *)swdata->stretch->pixels;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1250 } else {
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1251 dstp = (Uint8 *)display->pixels
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1252 + dst->x * display->format->BytesPerPixel
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1253 + dst->y * display->pitch;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1254 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1255 mod = (display->pitch / display->format->BytesPerPixel);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1256
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1257 if ( scale_2x ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1258 mod -= (overlay->w * 2);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1259 swdata->Display2X(swdata->colortab, swdata->rgb_2_pix,
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1260 lum, Cr, Cb, dstp, overlay->h, overlay->w, mod);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1261 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1262 mod -= overlay->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1263 swdata->Display1X(swdata->colortab, swdata->rgb_2_pix,
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1264 lum, Cr, Cb, dstp, overlay->h, overlay->w, mod);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1265 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1266 if ( SDL_MUSTLOCK(display) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1267 SDL_UnlockSurface(display);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1268 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1269 if ( stretch ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1270 display = swdata->display;
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1271 SDL_SoftStretch(swdata->stretch, src, display, dst);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1272 }
1643
51038e80ae59 More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1273 SDL_UpdateRects(display, 1, dst);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1274
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1275 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1276 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1277
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1278 void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1279 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1280 struct private_yuvhwdata *swdata;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1281
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1282 swdata = overlay->hwdata;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1283 if ( swdata ) {
9
a1c15fa4abb9 Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1284 if ( swdata->stretch ) {
a1c15fa4abb9 Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1285 SDL_FreeSurface(swdata->stretch);
a1c15fa4abb9 Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1286 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1287 if ( swdata->pixels ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1288 SDL_free(swdata->pixels);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1289 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1290 if ( swdata->colortab ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1291 SDL_free(swdata->colortab);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1292 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1293 if ( swdata->rgb_2_pix ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1294 SDL_free(swdata->rgb_2_pix);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1295 }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1296 SDL_free(swdata);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1297 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1298 }