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annotate src/video/bwindow/SDL_sysyuv.cc @ 1662:782fd950bd46 SDL-1.3

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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents 51038e80ae59
children 4da1ee79c9af
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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376665398b25 Catch the C++ and Objective C sources too...
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22 #include "SDL_config.h"
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23
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24 /* This is the BeOS version of SDL YUV video overlays */
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25
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26 #include "SDL_video.h"
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27 #include "SDL_sysyuv.h"
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28 #include "../SDL_yuvfuncs.h"
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29
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30 extern "C"
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31 {
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32
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33 /* The functions used to manipulate software video overlays */
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34 static struct private_yuvhwfuncs be_yuvfuncs = {
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35 BE_LockYUVOverlay,
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36 BE_UnlockYUVOverlay,
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37 BE_DisplayYUVOverlay,
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38 BE_FreeYUVOverlay
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39 };
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40
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41 BBitmap *BE_GetOverlayBitmap (BRect bounds, color_space cs)
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42 {
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43 BBitmap *bbitmap;
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44 bbitmap = new BBitmap (bounds, B_BITMAP_WILL_OVERLAY, cs);
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45 if (!bbitmap || bbitmap->InitCheck () != B_OK) {
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46 delete bbitmap;
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47 return 0;
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48 }
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49 overlay_restrictions r;
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50 bbitmap->GetOverlayRestrictions (&r);
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51 uint32 width = bounds.IntegerWidth () + 1;
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52 uint32 height = bounds.IntegerHeight () + 1;
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53 uint32 width_padding = 0;
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54 uint32 height_padding = 0;
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55 if ((r.source.horizontal_alignment != 0) ||
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56 (r.source.vertical_alignment != 0)) {
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57 delete bbitmap;
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58 return 0;
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59 }
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60 if (r.source.width_alignment != 0) {
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61 uint32 aligned_width = r.source.width_alignment + 1;
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62 if (width % aligned_width > 0) {
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63 width_padding = aligned_width - width % aligned_width;
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64 }
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65 }
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66 if (r.source.height_alignment != 0) {
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67 uint32 aligned_height = r.source.height_alignment + 1;
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68 if (height % aligned_height > 0) {
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69 fprintf (stderr,
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70 "GetOverlayBitmap failed height alignment\n");
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71 fprintf (stderr, "- height = %lu, aligned_height = %lu\n",
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72 height, aligned_height);
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73 delete bbitmap;
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74 return 0;
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75 }
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76 }
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77 if ((r.source.min_width > width) ||
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78 (r.source.min_height > height) ||
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79 (r.source.max_width < width) || (r.source.max_height < height)) {
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80 fprintf (stderr, "GetOverlayBitmap failed bounds tests\n");
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81 delete bbitmap;
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82 return 0;
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83 }
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84 if ((width_padding != 0) || (height_padding != 0)) {
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85 delete bbitmap;
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86 bounds.Set (bounds.left, bounds.top,
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87 bounds.right + width_padding,
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88 bounds.bottom + height_padding);
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89 bbitmap = new BBitmap (bounds, B_BITMAP_WILL_OVERLAY, cs);
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90 if (!bbitmap || bbitmap->InitCheck () != B_OK) {
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91 fprintf (stderr, "GetOverlayBitmap failed late\n");
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92 delete bbitmap;
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93 return 0;
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94 }
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95 }
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96 return bbitmap;
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97 }
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98
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99 // See <GraphicsDefs.h> [btw: Cb=U, Cr=V]
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100 // See also http://www.fourcc.org/indexyuv.htm
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101 enum color_space convert_color_space (Uint32 format)
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102 {
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103 switch (format) {
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104 case SDL_YV12_OVERLAY:
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105 return B_YUV9;
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106 case SDL_IYUV_OVERLAY:
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107 return B_YUV12;
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108 case SDL_YUY2_OVERLAY:
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109 return B_YCbCr422;
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110 case SDL_UYVY_OVERLAY:
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111 return B_YUV422;
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112 case SDL_YVYU_OVERLAY: // not supported on beos?
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113 return B_NO_COLOR_SPACE;
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114 default:
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115 return B_NO_COLOR_SPACE;
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116 }
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117 }
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118
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119 // See SDL_video.h
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120 int count_planes (Uint32 format)
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121 {
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122 switch (format) {
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123 case SDL_YV12_OVERLAY:
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124 case SDL_IYUV_OVERLAY:
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125 return 3;
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126 case SDL_YUY2_OVERLAY:
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127 case SDL_UYVY_OVERLAY:
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128 case SDL_YVYU_OVERLAY:
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129 return 1;
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130 default:
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131 return 0;
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132 }
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133 }
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134
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135 SDL_Overlay *BE_CreateYUVOverlay (_THIS, int width, int height,
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136 Uint32 format, SDL_Surface * display)
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137 {
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138 SDL_Overlay *overlay;
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139 struct private_yuvhwdata *hwdata;
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140 BBitmap *bbitmap;
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141 int planes;
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142 BRect bounds;
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143 color_space cs;
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144
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145 /* find the appropriate BeOS colorspace descriptor */
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146 cs = convert_color_space (format);
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147 if (cs == B_NO_COLOR_SPACE) {
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148 return NULL;
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149 }
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150
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151 /* count planes */
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152 planes = count_planes (format);
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153 if (planes == 0) {
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154 return NULL;
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155 }
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156 /* TODO: figure out planar modes, if anyone cares */
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157 if (planes == 3) {
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158 return NULL;
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159 }
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160
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161 /* Create the overlay structure */
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162 overlay = (SDL_Overlay *) SDL_calloc (1, sizeof (SDL_Overlay));
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163
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164 if (overlay == NULL) {
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165 SDL_OutOfMemory ();
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166 return NULL;
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167 }
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168
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169 /* Fill in the basic members */
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170 overlay->format = format;
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171 overlay->w = width;
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172 overlay->h = height;
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173 overlay->hwdata = NULL;
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174
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175 /* Set up the YUV surface function structure */
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176 overlay->hwfuncs = &be_yuvfuncs;
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177
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178 /* Create the pixel data and lookup tables */
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179 hwdata =
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180 (struct private_yuvhwdata *) SDL_calloc (1,
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181 sizeof (struct
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182 private_yuvhwdata));
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183
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184 if (hwdata == NULL) {
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185 SDL_OutOfMemory ();
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186 SDL_FreeYUVOverlay (overlay);
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187 return NULL;
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188 }
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189
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190 overlay->hwdata = hwdata;
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191 overlay->hwdata->display = display;
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192 overlay->hwdata->bview = NULL;
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193 overlay->hwdata->bbitmap = NULL;
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194 overlay->hwdata->locked = 0;
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195
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196 /* Create the BBitmap framebuffer */
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197 bounds.top = 0;
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198 bounds.left = 0;
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199 bounds.right = width - 1;
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200 bounds.bottom = height - 1;
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201
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202 BView *bview =
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203 new BView (bounds, "overlay", B_FOLLOW_NONE, B_WILL_DRAW);
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204 if (!bview) {
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205 SDL_OutOfMemory ();
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206 SDL_FreeYUVOverlay (overlay);
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207 return NULL;
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208 }
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209 overlay->hwdata->bview = bview;
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210 overlay->hwdata->first_display = true;
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211 bview->Hide ();
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212
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213 bbitmap = BE_GetOverlayBitmap (bounds, cs);
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214 if (!bbitmap) {
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215 overlay->hwdata->bbitmap = NULL;
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216 SDL_FreeYUVOverlay (overlay);
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217 return NULL;
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218 }
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219 overlay->hwdata->bbitmap = bbitmap;
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220
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221 overlay->planes = planes;
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222 overlay->pitches =
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223 (Uint16 *) SDL_calloc (overlay->planes, sizeof (Uint16));
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224 overlay->pixels =
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225 (Uint8 **) SDL_calloc (overlay->planes, sizeof (Uint8 *));
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226 if (!overlay->pitches || !overlay->pixels) {
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227 SDL_OutOfMemory ();
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228 SDL_FreeYUVOverlay (overlay);
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229 return (NULL);
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230 }
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diff changeset
231
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232 overlay->pitches[0] = bbitmap->BytesPerRow ();
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233 overlay->pixels[0] = (Uint8 *) bbitmap->Bits ();
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234 overlay->hw_overlay = 1;
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235
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236 if (SDL_Win->LockWithTimeout (1000000) != B_OK) {
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237 SDL_FreeYUVOverlay (overlay);
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238 return (NULL);
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239 }
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240 BView *view = SDL_Win->View ();
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241 view->AddChild (bview);
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242 rgb_color key;
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243 bview->SetViewOverlay (bbitmap, bounds, bview->Bounds (), &key,
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244 B_FOLLOW_ALL,
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245 B_OVERLAY_FILTER_HORIZONTAL |
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246 B_OVERLAY_FILTER_VERTICAL);
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247 bview->SetViewColor (key);
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248 bview->Flush ();
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249 SDL_Win->Unlock ();
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250
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251 current_overlay = overlay;
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252
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253 return overlay;
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254 }
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255
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256 int BE_LockYUVOverlay (_THIS, SDL_Overlay * overlay)
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257 {
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258 if (overlay == NULL) {
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259 return 0;
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260 }
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261
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262 overlay->hwdata->locked = 1;
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263 return 0;
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264 }
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265
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266 void BE_UnlockYUVOverlay (_THIS, SDL_Overlay * overlay)
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267 {
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268 if (overlay == NULL) {
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269 return;
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270 }
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271
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272 overlay->hwdata->locked = 0;
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273 }
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274
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275 int BE_DisplayYUVOverlay (_THIS, SDL_Overlay * overlay, SDL_Rect * src,
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276 SDL_Rect * dst)
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277 {
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278 if ((overlay == NULL) || (overlay->hwdata == NULL)
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279 || (overlay->hwdata->bview == NULL) || (SDL_Win->View () == NULL)) {
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280 return -1;
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281 }
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282 if (SDL_Win->LockWithTimeout (50000) != B_OK) {
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283 return 0;
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284 }
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285 BView *bview = overlay->hwdata->bview;
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286 if (SDL_Win->IsFullScreen ()) {
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287 int left, top;
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288 SDL_Win->GetXYOffset (left, top);
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289 bview->MoveTo (left + dst->x, top + dst->y);
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290 } else {
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291 bview->MoveTo (dst->x, dst->y);
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292 }
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293 bview->ResizeTo (dst->w, dst->h);
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294 bview->Flush ();
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295 if (overlay->hwdata->first_display) {
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296 bview->Show ();
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297 overlay->hwdata->first_display = false;
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298 }
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diff changeset
299 SDL_Win->Unlock ();
756
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parents:
diff changeset
300
10332c6fad2e te: Mon, 15 Dec 2003 08:25:14 -0800 PST
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diff changeset
301 return 0;
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diff changeset
302 }
1662
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303
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diff changeset
304 void BE_FreeYUVOverlay (_THIS, SDL_Overlay * overlay)
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diff changeset
305 {
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diff changeset
306 if (overlay == NULL) {
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diff changeset
307 return;
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diff changeset
308 }
756
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diff changeset
309
1662
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diff changeset
310 if (overlay->hwdata == NULL) {
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diff changeset
311 return;
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diff changeset
312 }
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diff changeset
313
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diff changeset
314 current_overlay = NULL;
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diff changeset
315
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
316 delete overlay->hwdata->bbitmap;
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diff changeset
317
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diff changeset
318 SDL_free (overlay->hwdata);
756
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diff changeset
319 }
10332c6fad2e te: Mon, 15 Dec 2003 08:25:14 -0800 PST
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diff changeset
320
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diff changeset
321 }; // extern "C"
756
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diff changeset
322
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diff changeset
323 /* vi: set ts=4 sw=4 expandtab: */