Mercurial > sdl-ios-xcode
annotate src/video/bwindow/SDL_sysyuv.cc @ 1662:782fd950bd46 SDL-1.3
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> |
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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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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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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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299 SDL_Win->Unlock (); |
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300 |
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301 return 0; |
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302 } |
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303 |
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304 void BE_FreeYUVOverlay (_THIS, SDL_Overlay * overlay) |
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305 { |
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306 if (overlay == NULL) { |
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307 return; |
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308 } |
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309 |
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310 if (overlay->hwdata == NULL) { |
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311 return; |
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312 } |
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313 |
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314 current_overlay = NULL; |
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315 |
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316 delete overlay->hwdata->bbitmap; |
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317 |
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318 SDL_free (overlay->hwdata); |
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319 } |
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320 |
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321 }; // extern "C" |
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322 |
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323 /* vi: set ts=4 sw=4 expandtab: */ |