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annotate src/video/SDL_yuv_sw.c @ 4533:4d7a2d263983

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author Sam Lantinga <slouken@libsdl.org>
date Sun, 18 Jul 2010 00:50:18 -0700
parents f7b03b6838cb
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 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 texture 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_yuv_sw_c.h"
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89
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90
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91 /* The colorspace conversion functions */
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92
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93 #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES
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94 extern void Color565DitherYV12MMX1X(int *colortab, Uint32 * rgb_2_pix,
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95 unsigned char *lum, unsigned char *cr,
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96 unsigned char *cb, unsigned char *out,
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97 int rows, int cols, int mod);
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98 extern void ColorRGBDitherYV12MMX1X(int *colortab, Uint32 * rgb_2_pix,
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99 unsigned char *lum, unsigned char *cr,
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100 unsigned char *cb, unsigned char *out,
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101 int rows, int cols, int mod);
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102 #endif
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103
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104 static void
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105 Color16DitherYV12Mod1X(int *colortab, Uint32 * rgb_2_pix,
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106 unsigned char *lum, unsigned char *cr,
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107 unsigned char *cb, unsigned char *out,
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108 int rows, int cols, int mod)
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109 {
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110 unsigned short *row1;
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111 unsigned short *row2;
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112 unsigned char *lum2;
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113 int x, y;
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114 int cr_r;
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115 int crb_g;
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116 int cb_b;
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117 int cols_2 = cols / 2;
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118
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119 row1 = (unsigned short *) out;
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120 row2 = row1 + cols + mod;
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121 lum2 = lum + cols;
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122
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123 mod += cols + mod;
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124
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125 y = rows / 2;
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126 while (y--) {
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127 x = cols_2;
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128 while (x--) {
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129 register int L;
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130
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131 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
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132 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
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133 + colortab[*cb + 2 * 256];
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134 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
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135 ++cr;
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136 ++cb;
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137
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138 L = *lum++;
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139 *row1++ = (unsigned short) (rgb_2_pix[L + cr_r] |
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140 rgb_2_pix[L + crb_g] |
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141 rgb_2_pix[L + cb_b]);
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142
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143 L = *lum++;
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144 *row1++ = (unsigned short) (rgb_2_pix[L + cr_r] |
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145 rgb_2_pix[L + crb_g] |
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146 rgb_2_pix[L + cb_b]);
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147
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148
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149 /* Now, do second row. */
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150
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151 L = *lum2++;
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152 *row2++ = (unsigned short) (rgb_2_pix[L + cr_r] |
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153 rgb_2_pix[L + crb_g] |
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154 rgb_2_pix[L + cb_b]);
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155
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156 L = *lum2++;
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157 *row2++ = (unsigned short) (rgb_2_pix[L + cr_r] |
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158 rgb_2_pix[L + crb_g] |
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159 rgb_2_pix[L + cb_b]);
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160 }
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161
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162 /*
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163 * These values are at the start of the next line, (due
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164 * to the ++'s above),but they need to be at the start
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165 * of the line after that.
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166 */
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167 lum += cols;
0
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168 lum2 += cols;
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169 row1 += mod;
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170 row2 += mod;
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171 }
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172 }
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173
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174 static void
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175 Color24DitherYV12Mod1X(int *colortab, Uint32 * rgb_2_pix,
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176 unsigned char *lum, unsigned char *cr,
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177 unsigned char *cb, unsigned char *out,
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178 int rows, int cols, int mod)
0
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179 {
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180 unsigned int value;
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181 unsigned char *row1;
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182 unsigned char *row2;
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183 unsigned char *lum2;
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184 int x, y;
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185 int cr_r;
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186 int crb_g;
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187 int cb_b;
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188 int cols_2 = cols / 2;
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189
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190 row1 = out;
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191 row2 = row1 + cols * 3 + mod * 3;
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192 lum2 = lum + cols;
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193
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194 mod += cols + mod;
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195 mod *= 3;
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196
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197 y = rows / 2;
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198 while (y--) {
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199 x = cols_2;
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200 while (x--) {
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201 register int L;
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202
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203 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
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204 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
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205 + colortab[*cb + 2 * 256];
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206 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
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207 ++cr;
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208 ++cb;
0
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209
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210 L = *lum++;
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211 value = (rgb_2_pix[L + cr_r] |
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212 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
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213 *row1++ = (value) & 0xFF;
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214 *row1++ = (value >> 8) & 0xFF;
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215 *row1++ = (value >> 16) & 0xFF;
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216
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217 L = *lum++;
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218 value = (rgb_2_pix[L + cr_r] |
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219 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
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220 *row1++ = (value) & 0xFF;
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221 *row1++ = (value >> 8) & 0xFF;
0
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222 *row1++ = (value >> 16) & 0xFF;
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223
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224
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225 /* Now, do second row. */
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226
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227 L = *lum2++;
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228 value = (rgb_2_pix[L + cr_r] |
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229 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
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230 *row2++ = (value) & 0xFF;
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231 *row2++ = (value >> 8) & 0xFF;
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232 *row2++ = (value >> 16) & 0xFF;
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233
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234 L = *lum2++;
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235 value = (rgb_2_pix[L + cr_r] |
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236 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
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237 *row2++ = (value) & 0xFF;
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238 *row2++ = (value >> 8) & 0xFF;
0
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239 *row2++ = (value >> 16) & 0xFF;
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240 }
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241
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242 /*
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243 * These values are at the start of the next line, (due
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244 * to the ++'s above),but they need to be at the start
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245 * of the line after that.
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246 */
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247 lum += cols;
0
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248 lum2 += cols;
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249 row1 += mod;
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250 row2 += mod;
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251 }
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252 }
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253
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254 static void
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255 Color32DitherYV12Mod1X(int *colortab, Uint32 * rgb_2_pix,
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256 unsigned char *lum, unsigned char *cr,
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257 unsigned char *cb, unsigned char *out,
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258 int rows, int cols, int mod)
0
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259 {
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260 unsigned int *row1;
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261 unsigned int *row2;
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262 unsigned char *lum2;
0
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263 int x, y;
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264 int cr_r;
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265 int crb_g;
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266 int cb_b;
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267 int cols_2 = cols / 2;
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268
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269 row1 = (unsigned int *) out;
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270 row2 = row1 + cols + mod;
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271 lum2 = lum + cols;
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272
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273 mod += cols + mod;
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274
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275 y = rows / 2;
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276 while (y--) {
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277 x = cols_2;
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278 while (x--) {
0
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279 register int L;
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280
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281 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
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282 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
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283 + colortab[*cb + 2 * 256];
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284 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
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285 ++cr;
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286 ++cb;
0
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287
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288 L = *lum++;
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289 *row1++ = (rgb_2_pix[L + cr_r] |
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290 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
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291
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292 L = *lum++;
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293 *row1++ = (rgb_2_pix[L + cr_r] |
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294 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
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295
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296
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297 /* Now, do second row. */
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298
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299 L = *lum2++;
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300 *row2++ = (rgb_2_pix[L + cr_r] |
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301 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
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302
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303 L = *lum2++;
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304 *row2++ = (rgb_2_pix[L + cr_r] |
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305 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
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306 }
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307
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308 /*
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309 * These values are at the start of the next line, (due
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310 * to the ++'s above),but they need to be at the start
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311 * of the line after that.
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312 */
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313 lum += cols;
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314 lum2 += cols;
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315 row1 += mod;
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316 row2 += mod;
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317 }
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318 }
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319
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320 /*
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321 * In this function I make use of a nasty trick. The tables have the lower
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322 * 16 bits replicated in the upper 16. This means I can write ints and get
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323 * the horisontal doubling for free (almost).
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324 */
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325 static void
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326 Color16DitherYV12Mod2X(int *colortab, Uint32 * rgb_2_pix,
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327 unsigned char *lum, unsigned char *cr,
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328 unsigned char *cb, unsigned char *out,
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329 int rows, int cols, int mod)
0
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330 {
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331 unsigned int *row1 = (unsigned int *) out;
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332 const int next_row = cols + (mod / 2);
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333 unsigned int *row2 = row1 + 2 * next_row;
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334 unsigned char *lum2;
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335 int x, y;
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336 int cr_r;
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337 int crb_g;
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338 int cb_b;
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339 int cols_2 = cols / 2;
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340
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341 lum2 = lum + cols;
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342
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343 mod = (next_row * 3) + (mod / 2);
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344
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345 y = rows / 2;
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346 while (y--) {
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347 x = cols_2;
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348 while (x--) {
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349 register int L;
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350
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351 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
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352 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
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353 + colortab[*cb + 2 * 256];
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354 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
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355 ++cr;
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356 ++cb;
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357
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358 L = *lum++;
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359 row1[0] = row1[next_row] = (rgb_2_pix[L + cr_r] |
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360 rgb_2_pix[L + crb_g] |
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361 rgb_2_pix[L + cb_b]);
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362 row1++;
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363
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364 L = *lum++;
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365 row1[0] = row1[next_row] = (rgb_2_pix[L + cr_r] |
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366 rgb_2_pix[L + crb_g] |
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367 rgb_2_pix[L + cb_b]);
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368 row1++;
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369
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370
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371 /* Now, do second row. */
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372
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373 L = *lum2++;
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374 row2[0] = row2[next_row] = (rgb_2_pix[L + cr_r] |
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375 rgb_2_pix[L + crb_g] |
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376 rgb_2_pix[L + cb_b]);
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377 row2++;
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378
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379 L = *lum2++;
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380 row2[0] = row2[next_row] = (rgb_2_pix[L + cr_r] |
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381 rgb_2_pix[L + crb_g] |
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382 rgb_2_pix[L + cb_b]);
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383 row2++;
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384 }
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385
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386 /*
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387 * These values are at the start of the next line, (due
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388 * to the ++'s above),but they need to be at the start
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389 * of the line after that.
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390 */
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391 lum += cols;
0
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392 lum2 += cols;
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393 row1 += mod;
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394 row2 += mod;
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395 }
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396 }
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397
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398 static void
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399 Color24DitherYV12Mod2X(int *colortab, Uint32 * rgb_2_pix,
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400 unsigned char *lum, unsigned char *cr,
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401 unsigned char *cb, unsigned char *out,
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402 int rows, int cols, int mod)
0
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403 {
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404 unsigned int value;
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405 unsigned char *row1 = out;
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406 const int next_row = (cols * 2 + mod) * 3;
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407 unsigned char *row2 = row1 + 2 * next_row;
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408 unsigned char *lum2;
0
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409 int x, y;
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410 int cr_r;
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411 int crb_g;
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412 int cb_b;
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413 int cols_2 = cols / 2;
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414
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415 lum2 = lum + cols;
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416
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417 mod = next_row * 3 + mod * 3;
0
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418
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419 y = rows / 2;
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420 while (y--) {
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421 x = cols_2;
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422 while (x--) {
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423 register int L;
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424
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425 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
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426 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
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427 + colortab[*cb + 2 * 256];
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428 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
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429 ++cr;
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430 ++cb;
0
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431
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432 L = *lum++;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
433 value = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
434 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
435 row1[0 + 0] = row1[3 + 0] = row1[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
436 row1[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
437 row1[0 + 1] = row1[3 + 1] = row1[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
438 row1[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
439 row1[0 + 2] = row1[3 + 2] = row1[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
440 row1[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
441 row1 += 2 * 3;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 L = *lum++;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
444 value = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
445 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
446 row1[0 + 0] = row1[3 + 0] = row1[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
447 row1[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
448 row1[0 + 1] = row1[3 + 1] = row1[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
449 row1[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
450 row1[0 + 2] = row1[3 + 2] = row1[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
451 row1[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
452 row1 += 2 * 3;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 /* Now, do second row. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 L = *lum2++;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
458 value = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
459 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
460 row2[0 + 0] = row2[3 + 0] = row2[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
461 row2[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
462 row2[0 + 1] = row2[3 + 1] = row2[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
463 row2[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
464 row2[0 + 2] = row2[3 + 2] = row2[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
465 row2[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
466 row2 += 2 * 3;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 L = *lum2++;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
469 value = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
470 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
471 row2[0 + 0] = row2[3 + 0] = row2[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
472 row2[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
473 row2[0 + 1] = row2[3 + 1] = row2[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
474 row2[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
475 row2[0 + 2] = row2[3 + 2] = row2[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
476 row2[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
477 row2 += 2 * 3;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 * These values are at the start of the next line, (due
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 * of the line after that.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
485 lum += cols;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 lum2 += cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 row1 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 row2 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
492 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
493 Color32DitherYV12Mod2X(int *colortab, Uint32 * rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
494 unsigned char *lum, unsigned char *cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
495 unsigned char *cb, unsigned char *out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
496 int rows, int cols, int mod)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
498 unsigned int *row1 = (unsigned int *) out;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
499 const int next_row = cols * 2 + mod;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
500 unsigned int *row2 = row1 + 2 * next_row;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
501 unsigned char *lum2;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 lum2 = lum + cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 mod = (next_row * 3) + mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 y = rows / 2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
513 while (y--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 x = cols_2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
515 while (x--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
518 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
519 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
520 + colortab[*cb + 2 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
521 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
522 ++cr;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
523 ++cb;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 L = *lum++;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
526 row1[0] = row1[1] = row1[next_row] = row1[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
527 (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
528 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 row1 += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 L = *lum++;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
532 row1[0] = row1[1] = row1[next_row] = row1[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
533 (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
534 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 row1 += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 /* Now, do second row. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 L = *lum2++;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
541 row2[0] = row2[1] = row2[next_row] = row2[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
542 (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
543 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 row2 += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 L = *lum2++;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
547 row2[0] = row2[1] = row2[next_row] = row2[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
548 (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
549 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 row2 += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 * These values are at the start of the next line, (due
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 * to the ++'s above),but they need to be at the start
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 * of the line after that.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
558 lum += cols;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 lum2 += cols;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 row1 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561 row2 += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
565 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
566 Color16DitherYUY2Mod1X(int *colortab, Uint32 * rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
567 unsigned char *lum, unsigned char *cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
568 unsigned char *cb, unsigned char *out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
569 int rows, int cols, int mod)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
571 unsigned short *row;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
578 row = (unsigned short *) out;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580 y = rows;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
581 while (y--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582 x = cols_2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
583 while (x--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
585
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
586 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
587 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
588 + colortab[*cb + 2 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
589 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
590 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
591 cb += 4;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
593 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
594 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
595 *row++ = (unsigned short) (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
596 rgb_2_pix[L + crb_g] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
597 rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
599 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
600 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
601 *row++ = (unsigned short) (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
602 rgb_2_pix[L + crb_g] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
603 rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 row += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
611 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
612 Color24DitherYUY2Mod1X(int *colortab, Uint32 * rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
613 unsigned char *lum, unsigned char *cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
614 unsigned char *cb, unsigned char *out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
615 int rows, int cols, int mod)
0
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 int value;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
618 unsigned char *row;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
625 row = (unsigned char *) out;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 mod *= 3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627 y = rows;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
628 while (y--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 x = cols_2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
630 while (x--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
633 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
634 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
635 + colortab[*cb + 2 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
636 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
637 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
638 cb += 4;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
640 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
641 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
642 value = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
643 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
644 *row++ = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
645 *row++ = (value >> 8) & 0xFF;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
646 *row++ = (value >> 16) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
647
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
648 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
649 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
650 value = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
651 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
652 *row++ = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
653 *row++ = (value >> 8) & 0xFF;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
654 *row++ = (value >> 16) & 0xFF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
655
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
656 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
657 row += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
658 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
659 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
660
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
661 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
662 Color32DitherYUY2Mod1X(int *colortab, Uint32 * rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
663 unsigned char *lum, unsigned char *cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
664 unsigned char *cb, unsigned char *out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
665 int rows, int cols, int mod)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
666 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
667 unsigned int *row;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
668 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
669 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
670 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
671 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
672 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
673
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
674 row = (unsigned int *) out;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
675 y = rows;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
676 while (y--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
677 x = cols_2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
678 while (x--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
679 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
680
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
681 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
682 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
683 + colortab[*cb + 2 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
684 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
685 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
686 cb += 4;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
687
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
688 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
689 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
690 *row++ = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
691 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
692
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
693 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
694 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
695 *row++ = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
696 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
697
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
698
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
699 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
700 row += mod;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
701 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
702 }
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 * 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
706 * 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
707 * the horisontal doubling for free (almost).
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
708 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
709 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
710 Color16DitherYUY2Mod2X(int *colortab, Uint32 * rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
711 unsigned char *lum, unsigned char *cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
712 unsigned char *cb, unsigned char *out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
713 int rows, int cols, int mod)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
714 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
715 unsigned int *row = (unsigned int *) out;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
716 const int next_row = cols + (mod / 2);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
717 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
718 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
719 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
720 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
721 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
722
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
723 y = rows;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
724 while (y--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
725 x = cols_2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
726 while (x--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
727 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
728
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
729 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
730 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
731 + colortab[*cb + 2 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
732 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
733 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
734 cb += 4;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
735
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
736 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
737 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
738 row[0] = row[next_row] = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
739 rgb_2_pix[L + crb_g] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
740 rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
741 row++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
742
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
743 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
744 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
745 row[0] = row[next_row] = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
746 rgb_2_pix[L + crb_g] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
747 rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
748 row++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
749
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
750 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
751 row += next_row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
752 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
753 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
754
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
755 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
756 Color24DitherYUY2Mod2X(int *colortab, Uint32 * rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
757 unsigned char *lum, unsigned char *cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
758 unsigned char *cb, unsigned char *out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
759 int rows, int cols, int mod)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
760 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
761 unsigned int value;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
762 unsigned char *row = out;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
763 const int next_row = (cols * 2 + mod) * 3;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
764 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
765 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
766 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
767 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
768 int cols_2 = cols / 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
769 y = rows;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
770 while (y--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
771 x = cols_2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
772 while (x--) {
0
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
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
775 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
776 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
777 + colortab[*cb + 2 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
778 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
779 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
780 cb += 4;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
781
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
782 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
783 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
784 value = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
785 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
786 row[0 + 0] = row[3 + 0] = row[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
787 row[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
788 row[0 + 1] = row[3 + 1] = row[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
789 row[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
790 row[0 + 2] = row[3 + 2] = row[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
791 row[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
792 row += 2 * 3;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
793
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
794 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
795 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
796 value = (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
797 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
798 row[0 + 0] = row[3 + 0] = row[next_row + 0] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
799 row[next_row + 3 + 0] = (value) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
800 row[0 + 1] = row[3 + 1] = row[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
801 row[next_row + 3 + 1] = (value >> 8) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
802 row[0 + 2] = row[3 + 2] = row[next_row + 2] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
803 row[next_row + 3 + 2] = (value >> 16) & 0xFF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
804 row += 2 * 3;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
805
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
806 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
807 row += next_row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
808 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
809 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
810
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
811 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
812 Color32DitherYUY2Mod2X(int *colortab, Uint32 * rgb_2_pix,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
813 unsigned char *lum, unsigned char *cr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
814 unsigned char *cb, unsigned char *out,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
815 int rows, int cols, int mod)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
816 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
817 unsigned int *row = (unsigned int *) out;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
818 const int next_row = cols * 2 + mod;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
819 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
820 int cr_r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
821 int crb_g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
822 int cb_b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
823 int cols_2 = cols / 2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
824 mod += mod;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
825 y = rows;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
826 while (y--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
827 x = cols_2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
828 while (x--) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
829 register int L;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
830
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
831 cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
832 crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
833 + colortab[*cb + 2 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
834 cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
835 cr += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
836 cb += 4;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
837
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
838 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
839 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
840 row[0] = row[1] = row[next_row] = row[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
841 (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
842 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
843 row += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
844
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
845 L = *lum;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
846 lum += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
847 row[0] = row[1] = row[next_row] = row[next_row + 1] =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
848 (rgb_2_pix[L + cr_r] |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
849 rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
850 row += 2;
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
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
855 row += next_row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
856 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
857 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
858
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
859 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
860 * How many 1 bits are there in the Uint32.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
861 * Low performance, do not call often.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
862 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
863 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
864 number_of_bits_set(Uint32 a)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
865 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
866 if (!a)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
867 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
868 if (a & 1)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
869 return 1 + number_of_bits_set(a >> 1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
870 return (number_of_bits_set(a >> 1));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
871 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
872
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
873 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
874 * How many 0 bits are there at least significant end of Uint32.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
875 * Low performance, do not call often.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
876 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
877 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
878 free_bits_at_bottom(Uint32 a)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
879 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
880 /* assume char is 8 bits */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
881 if (!a)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
882 return sizeof(Uint32) * 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
883 if (((Sint32) a) & 1l)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
884 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
885 return 1 + free_bits_at_bottom(a >> 1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
886 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
887
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
888 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
889 SDL_SW_SetupYUVDisplay(SDL_SW_YUVTexture * swdata, Uint32 target_format)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
890 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
891 Uint32 *r_2_pix_alloc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
892 Uint32 *g_2_pix_alloc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
893 Uint32 *b_2_pix_alloc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
894 int i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
895 int bpp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
896 Uint32 Rmask, Gmask, Bmask, Amask;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
897
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
898 if (!SDL_PixelFormatEnumToMasks
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
899 (target_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask) || bpp < 15) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
900 SDL_SetError("Unsupported YUV destination format");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
901 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
902 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
903
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
904 swdata->target_format = target_format;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
905 r_2_pix_alloc = &swdata->rgb_2_pix[0 * 768];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
906 g_2_pix_alloc = &swdata->rgb_2_pix[1 * 768];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
907 b_2_pix_alloc = &swdata->rgb_2_pix[2 * 768];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
908
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
909 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
910 * Set up entries 0-255 in rgb-to-pixel value tables.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
911 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
912 for (i = 0; i < 256; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
913 r_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(Rmask));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
914 r_2_pix_alloc[i + 256] <<= free_bits_at_bottom(Rmask);
2795
9e7ce3069096 Set the alpha mask fixing software rendering in OpenGL
Sam Lantinga <slouken@libsdl.org>
parents: 2786
diff changeset
915 r_2_pix_alloc[i + 256] |= Amask;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
916 g_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(Gmask));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
917 g_2_pix_alloc[i + 256] <<= free_bits_at_bottom(Gmask);
2795
9e7ce3069096 Set the alpha mask fixing software rendering in OpenGL
Sam Lantinga <slouken@libsdl.org>
parents: 2786
diff changeset
918 g_2_pix_alloc[i + 256] |= Amask;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
919 b_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(Bmask));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
920 b_2_pix_alloc[i + 256] <<= free_bits_at_bottom(Bmask);
2795
9e7ce3069096 Set the alpha mask fixing software rendering in OpenGL
Sam Lantinga <slouken@libsdl.org>
parents: 2786
diff changeset
921 b_2_pix_alloc[i + 256] |= Amask;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
922 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
923
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
924 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
925 * If we have 16-bit output depth, then we double the value
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
926 * in the top word. This means that we can write out both
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
927 * pixels in the pixel doubling mode with one op. It is
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
928 * harmless in the normal case as storing a 32-bit value
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
929 * through a short pointer will lose the top bits anyway.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
930 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
931 if (SDL_BYTESPERPIXEL(target_format) == 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
932 for (i = 0; i < 256; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
933 r_2_pix_alloc[i + 256] |= (r_2_pix_alloc[i + 256]) << 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
934 g_2_pix_alloc[i + 256] |= (g_2_pix_alloc[i + 256]) << 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
935 b_2_pix_alloc[i + 256] |= (b_2_pix_alloc[i + 256]) << 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
936 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
937 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
938
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
939 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
940 * Spread out the values we have to the rest of the array so that
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
941 * we do not need to check for overflow.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
942 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
943 for (i = 0; i < 256; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
944 r_2_pix_alloc[i] = r_2_pix_alloc[256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
945 r_2_pix_alloc[i + 512] = r_2_pix_alloc[511];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
946 g_2_pix_alloc[i] = g_2_pix_alloc[256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
947 g_2_pix_alloc[i + 512] = g_2_pix_alloc[511];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
948 b_2_pix_alloc[i] = b_2_pix_alloc[256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
949 b_2_pix_alloc[i + 512] = b_2_pix_alloc[511];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
950 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
951
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
952 /* You have chosen wisely... */
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
953 switch (swdata->format) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
954 case SDL_PIXELFORMAT_YV12:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
955 case SDL_PIXELFORMAT_IYUV:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
956 if (SDL_BYTESPERPIXEL(target_format) == 2) {
2197
2ff40f30af31 Merged r3261:3262 from branches/SDL-1.2: MMX/YUV with __OPTIMIZE__.
Ryan C. Gordon <icculus@icculus.org>
parents: 2172
diff changeset
957 #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
958 /* inline assembly functions */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
959 if (SDL_HasMMX() && (Rmask == 0xF800) &&
2172
bef26cfc8f79 Fixed compiling YUV code
Sam Lantinga <slouken@libsdl.org>
parents: 2168
diff changeset
960 (Gmask == 0x07E0) && (Bmask == 0x001F)
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
961 && (swdata->w & 15) == 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
962 /*printf("Using MMX 16-bit 565 dither\n");*/
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
963 swdata->Display1X = Color565DitherYV12MMX1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
964 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
965 /*printf("Using C 16-bit dither\n");*/
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
966 swdata->Display1X = Color16DitherYV12Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
967 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
968 #else
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
969 swdata->Display1X = Color16DitherYV12Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
970 #endif
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
971 swdata->Display2X = Color16DitherYV12Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
972 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
973 if (SDL_BYTESPERPIXEL(target_format) == 3) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
974 swdata->Display1X = Color24DitherYV12Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
975 swdata->Display2X = Color24DitherYV12Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
976 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
977 if (SDL_BYTESPERPIXEL(target_format) == 4) {
2197
2ff40f30af31 Merged r3261:3262 from branches/SDL-1.2: MMX/YUV with __OPTIMIZE__.
Ryan C. Gordon <icculus@icculus.org>
parents: 2172
diff changeset
978 #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
979 /* inline assembly functions */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
980 if (SDL_HasMMX() && (Rmask == 0x00FF0000) &&
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
981 (Gmask == 0x0000FF00) &&
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
982 (Bmask == 0x000000FF) && (swdata->w & 15) == 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
983 /*printf("Using MMX 32-bit dither\n");*/
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
984 swdata->Display1X = ColorRGBDitherYV12MMX1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
985 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
986 /*printf("Using C 32-bit dither\n");*/
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
987 swdata->Display1X = Color32DitherYV12Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
988 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
989 #else
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
990 swdata->Display1X = Color32DitherYV12Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
991 #endif
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
992 swdata->Display2X = Color32DitherYV12Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
993 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
994 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
995 case SDL_PIXELFORMAT_YUY2:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
996 case SDL_PIXELFORMAT_UYVY:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
997 case SDL_PIXELFORMAT_YVYU:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
998 if (SDL_BYTESPERPIXEL(target_format) == 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
999 swdata->Display1X = Color16DitherYUY2Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1000 swdata->Display2X = Color16DitherYUY2Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1001 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1002 if (SDL_BYTESPERPIXEL(target_format) == 3) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1003 swdata->Display1X = Color24DitherYUY2Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1004 swdata->Display2X = Color24DitherYUY2Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1005 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1006 if (SDL_BYTESPERPIXEL(target_format) == 4) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1007 swdata->Display1X = Color32DitherYUY2Mod1X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1008 swdata->Display2X = Color32DitherYUY2Mod2X;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1009 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1010 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1011 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1012 /* We should never get here (caught above) */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1013 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1014 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1015
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1016 if (swdata->display) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1017 SDL_FreeSurface(swdata->display);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1018 swdata->display = NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1019 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1020 return 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1021 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1022
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1023 SDL_SW_YUVTexture *
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1024 SDL_SW_CreateYUVTexture(Uint32 format, int w, int h)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1025 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1026 SDL_SW_YUVTexture *swdata;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1027 int *Cr_r_tab;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1028 int *Cr_g_tab;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1029 int *Cb_g_tab;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1030 int *Cb_b_tab;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1031 int i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1032 int CR, CB;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1033
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
1034 swdata = (SDL_SW_YUVTexture *) SDL_calloc(1, sizeof(*swdata));
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1035 if (!swdata) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1036 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1037 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1038 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1039
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1040 switch (format) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1041 case SDL_PIXELFORMAT_YV12:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1042 case SDL_PIXELFORMAT_IYUV:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1043 case SDL_PIXELFORMAT_YUY2:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1044 case SDL_PIXELFORMAT_UYVY:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1045 case SDL_PIXELFORMAT_YVYU:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1046 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1047 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1048 SDL_SetError("Unsupported YUV format");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1049 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1050 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1051
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1052 swdata->format = format;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1053 swdata->target_format = SDL_PIXELFORMAT_UNKNOWN;
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2781
diff changeset
1054 swdata->w = w;
Sam Lantinga <slouken@libsdl.org>
parents: 2781
diff changeset
1055 swdata->h = h;
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1056 swdata->pixels = (Uint8 *) SDL_malloc(w * h * 2);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1057 swdata->colortab = (int *) SDL_malloc(4 * 256 * sizeof(int));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1058 swdata->rgb_2_pix = (Uint32 *) SDL_malloc(3 * 768 * sizeof(Uint32));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1059 if (!swdata->pixels || !swdata->colortab || !swdata->rgb_2_pix) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1060 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1061 SDL_SW_DestroyYUVTexture(swdata);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1062 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1063 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1064
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1065 /* Generate the tables for the display surface */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1066 Cr_r_tab = &swdata->colortab[0 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1067 Cr_g_tab = &swdata->colortab[1 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1068 Cb_g_tab = &swdata->colortab[2 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1069 Cb_b_tab = &swdata->colortab[3 * 256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1070 for (i = 0; i < 256; i++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1071 /* Gamma correction (luminescence table) and chroma correction
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1072 would be done here. See the Berkeley mpeg_play sources.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1073 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1074 CB = CR = (i - 128);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1075 Cr_r_tab[i] = (int) ((0.419 / 0.299) * CR);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1076 Cr_g_tab[i] = (int) (-(0.299 / 0.419) * CR);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1077 Cb_g_tab[i] = (int) (-(0.114 / 0.331) * CB);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1078 Cb_b_tab[i] = (int) ((0.587 / 0.331) * CB);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1079 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1080
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1081 /* Find the pitch and offset values for the overlay */
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1082 switch (format) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1083 case SDL_PIXELFORMAT_YV12:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1084 case SDL_PIXELFORMAT_IYUV:
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1085 swdata->pitches[0] = w;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1086 swdata->pitches[1] = swdata->pitches[0] / 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1087 swdata->pitches[2] = swdata->pitches[0] / 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1088 swdata->planes[0] = swdata->pixels;
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2781
diff changeset
1089 swdata->planes[1] = swdata->planes[0] + swdata->pitches[0] * h;
Sam Lantinga <slouken@libsdl.org>
parents: 2781
diff changeset
1090 swdata->planes[2] = swdata->planes[1] + swdata->pitches[1] * h / 2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1091 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1092 case SDL_PIXELFORMAT_YUY2:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1093 case SDL_PIXELFORMAT_UYVY:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1094 case SDL_PIXELFORMAT_YVYU:
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1095 swdata->pitches[0] = w * 2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1096 swdata->planes[0] = swdata->pixels;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1097 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1098 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1099 /* We should never get here (caught above) */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1100 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1101 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1102
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1103 /* We're all done.. */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1104 return (swdata);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1105 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1106
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1107 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1108 SDL_SW_QueryYUVTexturePixels(SDL_SW_YUVTexture * swdata, void **pixels,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1109 int *pitch)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1110 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1111 *pixels = swdata->planes[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1112 *pitch = swdata->pitches[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1113 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1114 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1115
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1116 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1117 SDL_SW_UpdateYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1118 const void *pixels, int pitch)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1119 {
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1120 switch (swdata->format) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1121 case SDL_PIXELFORMAT_YV12:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1122 case SDL_PIXELFORMAT_IYUV:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1123 if (rect
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1124 && (rect->x != 0 || rect->y != 0 || rect->w != swdata->w
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1125 || rect->h != swdata->h)) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1126 SDL_SetError
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1127 ("YV12 and IYUV textures only support full surface updates");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1128 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1129 }
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1130 SDL_memcpy(swdata->pixels, pixels, swdata->h * swdata->w * 2);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1131 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1132 case SDL_PIXELFORMAT_YUY2:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1133 case SDL_PIXELFORMAT_UYVY:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1134 case SDL_PIXELFORMAT_YVYU:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1135 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1136 Uint8 *src, *dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1137 int row;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1138 size_t length;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1139
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1140 src = (Uint8 *) pixels;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1141 dst =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1142 swdata->planes[0] + rect->y * swdata->pitches[0] +
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1143 rect->x * 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1144 length = rect->w * 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1145 for (row = 0; row < rect->h; ++row) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1146 SDL_memcpy(dst, src, length);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1147 src += pitch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1148 dst += swdata->pitches[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1149 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1150 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1151 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1152 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1153 return 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1154 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1155
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1156 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1157 SDL_SW_LockYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1158 int markDirty, void **pixels, int *pitch)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1159 {
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1160 switch (swdata->format) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1161 case SDL_PIXELFORMAT_YV12:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1162 case SDL_PIXELFORMAT_IYUV:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1163 if (rect
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1164 && (rect->x != 0 || rect->y != 0 || rect->w != swdata->w
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1165 || rect->h != swdata->h)) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1166 SDL_SetError
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1167 ("YV12 and IYUV textures only support full surface locks");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1168 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1169 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1170 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1171 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1172
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1173 *pixels = swdata->planes[0] + rect->y * swdata->pitches[0] + rect->x * 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1174 *pitch = swdata->pitches[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1175 return 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1176 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1177
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1178 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1179 SDL_SW_UnlockYUVTexture(SDL_SW_YUVTexture * swdata)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1180 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1181 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1182
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1183 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1184 SDL_SW_CopyYUVToRGB(SDL_SW_YUVTexture * swdata, const SDL_Rect * srcrect,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1185 Uint32 target_format, int w, int h, void *pixels,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1186 int pitch)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1187 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1188 int stretch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1189 int scale_2x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1190 Uint8 *lum, *Cr, *Cb;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1191 int mod;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1192
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1193 /* Make sure we're set up to display in the desired format */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1194 if (target_format != swdata->target_format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1195 if (SDL_SW_SetupYUVDisplay(swdata, target_format) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1196 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1197 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1198 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1199
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1200 stretch = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1201 scale_2x = 0;
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1202 if (srcrect->x || srcrect->y || srcrect->w < swdata->w
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1203 || srcrect->h < swdata->h) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1204 /* The source rectangle has been clipped.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1205 Using a scratch surface is easier than adding clipped
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1206 source support to all the blitters, plus that would
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1207 slow them down in the general unclipped case.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1208 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1209 stretch = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1210 } else if ((srcrect->w != w) || (srcrect->h != h)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1211 if ((w == 2 * srcrect->w) && (h == 2 * srcrect->h)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1212 scale_2x = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1213 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1214 stretch = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1215 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1216 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1217 if (stretch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1218 int bpp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1219 Uint32 Rmask, Gmask, Bmask, Amask;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1220
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1221 if (swdata->display) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1222 swdata->display->w = w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1223 swdata->display->h = h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1224 swdata->display->pixels = pixels;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1225 swdata->display->pitch = pitch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1226 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1227 /* This must have succeeded in SDL_SW_SetupYUVDisplay() earlier */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1228 SDL_PixelFormatEnumToMasks(target_format, &bpp, &Rmask, &Gmask,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1229 &Bmask, &Amask);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1230 swdata->display =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1231 SDL_CreateRGBSurfaceFrom(pixels, w, h, bpp, pitch, Rmask,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1232 Gmask, Bmask, Amask);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1233 if (!swdata->display) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1234 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1235 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1236 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1237 if (!swdata->stretch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1238 /* This must have succeeded in SDL_SW_SetupYUVDisplay() earlier */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1239 SDL_PixelFormatEnumToMasks(target_format, &bpp, &Rmask, &Gmask,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1240 &Bmask, &Amask);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1241 swdata->stretch =
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1242 SDL_CreateRGBSurface(0, swdata->w, swdata->h, bpp, Rmask,
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1243 Gmask, Bmask, Amask);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1244 if (!swdata->stretch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1245 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1246 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1247 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1248 pixels = swdata->stretch->pixels;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1249 pitch = swdata->stretch->pitch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1250 }
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1251 switch (swdata->format) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1252 case SDL_PIXELFORMAT_YV12:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1253 lum = swdata->planes[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1254 Cr = swdata->planes[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1255 Cb = swdata->planes[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1256 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1257 case SDL_PIXELFORMAT_IYUV:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1258 lum = swdata->planes[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1259 Cr = swdata->planes[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1260 Cb = swdata->planes[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1261 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1262 case SDL_PIXELFORMAT_YUY2:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1263 lum = swdata->planes[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1264 Cr = lum + 3;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1265 Cb = lum + 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1266 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1267 case SDL_PIXELFORMAT_UYVY:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1268 lum = swdata->planes[0] + 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1269 Cr = lum + 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1270 Cb = lum - 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1271 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
1272 case SDL_PIXELFORMAT_YVYU:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1273 lum = swdata->planes[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1274 Cr = lum + 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1275 Cb = lum + 3;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1276 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1277 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1278 SDL_SetError("Unsupported YUV format in copy");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1279 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1280 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1281 mod = (pitch / SDL_BYTESPERPIXEL(target_format));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1282
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1283 if (scale_2x) {
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1284 mod -= (swdata->w * 2);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1285 swdata->Display2X(swdata->colortab, swdata->rgb_2_pix,
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1286 lum, Cr, Cb, pixels, swdata->h, swdata->w, mod);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1287 } else {
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1288 mod -= swdata->w;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1289 swdata->Display1X(swdata->colortab, swdata->rgb_2_pix,
2781
5651642f4a78 Added software fallback for YUV overlay code when YUV textures aren't available.
Sam Lantinga <slouken@libsdl.org>
parents: 2197
diff changeset
1290 lum, Cr, Cb, pixels, swdata->h, swdata->w, mod);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1291 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1292 if (stretch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1293 SDL_Rect rect = *srcrect;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1294 SDL_SoftStretch(swdata->stretch, &rect, swdata->display, NULL);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1295 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1296 return 0;
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
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1299 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1300 SDL_SW_DestroyYUVTexture(SDL_SW_YUVTexture * swdata)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1301 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1302 if (swdata) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1303 if (swdata->pixels) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1304 SDL_free(swdata->pixels);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1305 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1306 if (swdata->colortab) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1307 SDL_free(swdata->colortab);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1308 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1309 if (swdata->rgb_2_pix) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1310 SDL_free(swdata->rgb_2_pix);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1311 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1312 if (swdata->stretch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1313 SDL_FreeSurface(swdata->stretch);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1314 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1315 if (swdata->display) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1316 SDL_FreeSurface(swdata->display);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1317 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1318 SDL_free(swdata);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1319 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1320 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1321
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1644
diff changeset
1322 /* vi: set ts=4 sw=4 expandtab: */