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annotate src/video/quartz/SDL_QuartzYUV.m @ 1905:36d52b1f0504

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Prefer the D3D renderer over GDI, at least for testing. Added support for the SDL_VIDEO_RENDERER environment variable to pick the desired render driver. Implemented WritePixels support for the D3D renderer.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 14 Jul 2006 08:22:45 +0000
parents c121d94672cb
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) 1997-2003 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@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 #include "SDL_QuartzVideo.h"
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25 #include "SDL_QuartzWindow.h"
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26 #include "../SDL_yuvfuncs.h"
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27
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28
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29 #define yuv_idh (this->hidden->yuv_idh)
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30 #define yuv_matrix (this->hidden->yuv_matrix)
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31 #define yuv_codec (this->hidden->yuv_codec)
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32 #define yuv_seq (this->hidden->yuv_seq)
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33 #define yuv_pixmap (this->hidden->yuv_pixmap)
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34 #define yuv_data (this->hidden->yuv_data)
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35 #define yuv_width (this->hidden->yuv_width)
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36 #define yuv_height (this->hidden->yuv_height)
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37 #define yuv_port (this->hidden->yuv_port)
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38
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39
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40 static int
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41 QZ_LockYUV (_THIS, SDL_Overlay * overlay)
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42 {
761
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43
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44 return 0;
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45 }
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46
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47 static void
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48 QZ_UnlockYUV (_THIS, SDL_Overlay * overlay)
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49 {
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50
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51 ;
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52 }
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53
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54 static int
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55 QZ_DisplayYUV (_THIS, SDL_Overlay * overlay, SDL_Rect * src, SDL_Rect * dst)
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56 {
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57
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58 OSErr err;
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59 CodecFlags flags;
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60
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61 if (dst->x != 0 || dst->y != 0) {
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62
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63 SDL_SetError ("Need a dst at (0,0)");
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64 return -1;
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65 }
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66
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67 if (dst->w != yuv_width || dst->h != yuv_height) {
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68
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69 Fixed scale_x, scale_y;
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70
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71 scale_x = FixDiv (Long2Fix (dst->w), Long2Fix (overlay->w));
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72 scale_y = FixDiv (Long2Fix (dst->h), Long2Fix (overlay->h));
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73
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74 SetIdentityMatrix (yuv_matrix);
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75 ScaleMatrix (yuv_matrix, scale_x, scale_y, Long2Fix (0),
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76 Long2Fix (0));
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77
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78 SetDSequenceMatrix (yuv_seq, yuv_matrix);
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79
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80 yuv_width = dst->w;
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81 yuv_height = dst->h;
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82 }
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83
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84 if ((err = DecompressSequenceFrameS (yuv_seq,
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85 (void *) yuv_pixmap,
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86 sizeof (PlanarPixmapInfoYUV420),
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87 codecFlagUseImageBuffer, &flags,
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88 nil) != noErr)) {
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89 SDL_SetError ("DecompressSequenceFrameS failed");
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90 }
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91
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92 return err != noErr;
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93 }
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94
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95 static void
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96 QZ_FreeHWYUV (_THIS, SDL_Overlay * overlay)
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97 {
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98
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99 CDSequenceEnd (yuv_seq);
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100 ExitMovies ();
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101
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102 SDL_free (overlay->hwfuncs);
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103 SDL_free (overlay->pitches);
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104 SDL_free (overlay->pixels);
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105
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106 if (SDL_VideoSurface->flags & SDL_FULLSCREEN) {
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107 [qz_window close];
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108 qz_window = nil;
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109 }
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110
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111 SDL_free (yuv_matrix);
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112 DisposeHandle ((Handle) yuv_idh);
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113 }
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114
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115 /* check for 16 byte alignment, bail otherwise */
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116 #define CHECK_ALIGN(x) do { if ((Uint32)x & 15) { SDL_SetError("Alignment error"); return NULL; } } while(0)
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117
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118 /* align a byte offset, return how much to add to make it a multiple of 16 */
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119 #define ALIGN(x) ((16 - (x & 15)) & 15)
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120
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121 SDL_Overlay *
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122 QZ_CreateYUVOverlay (_THIS, int width, int height,
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123 Uint32 format, SDL_Surface * display)
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124 {
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125
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126 Uint32 codec;
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parents:
diff changeset
127 OSStatus err;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
128 CGrafPtr port;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
129 SDL_Overlay *overlay;
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parents:
diff changeset
130
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131 if (format == SDL_YV12_OVERLAY || format == SDL_IYUV_OVERLAY) {
761
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diff changeset
132
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diff changeset
133 codec = kYUV420CodecType;
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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134 } else {
761
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diff changeset
135 SDL_SetError ("Hardware: unsupported video format");
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
136 return NULL;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
137 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
138
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
139 yuv_idh =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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140 (ImageDescriptionHandle) NewHandleClear (sizeof (ImageDescription));
761
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parents:
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141 if (yuv_idh == NULL) {
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142 SDL_OutOfMemory ();
761
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diff changeset
143 return NULL;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
145
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diff changeset
146 yuv_matrix = (MatrixRecordPtr) SDL_malloc (sizeof (MatrixRecord));
761
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147 if (yuv_matrix == NULL) {
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148 SDL_OutOfMemory ();
761
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diff changeset
149 return NULL;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150 }
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
151
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diff changeset
152 if (EnterMovies () != noErr) {
761
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153 SDL_SetError ("Could not init QuickTime for YUV playback");
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
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diff changeset
154 return NULL;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157 err = FindCodec (codec, bestSpeedCodec, nil, &yuv_codec);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 if (err != noErr) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159 SDL_SetError ("Could not find QuickTime codec for format");
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parents:
diff changeset
160 return NULL;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163 if (SDL_VideoSurface->flags & SDL_FULLSCREEN) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 /*
1895
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166 Acceleration requires a window to be present.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1756
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167 A CGrafPtr that points to the screen isn't good enough
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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168 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
169 NSRect content =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
170 NSMakeRect (0, 0, SDL_VideoSurface->w, SDL_VideoSurface->h);
761
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171
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diff changeset
172 qz_window =[[SDL_QuartzWindow alloc] initWithContentRect: content styleMask: NSBorderlessWindowMask backing: NSBackingStoreBuffered defer:NO];
761
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parents:
diff changeset
173
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 if (qz_window == nil) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 SDL_SetError ("Could not create the Cocoa window");
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 return NULL;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
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diff changeset
178
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diff changeset
179 [qz_window setContentView:[[NSQuickDrawView alloc] init]];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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180 [qz_window setReleasedWhenClosed:YES];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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181 [qz_window center];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
182 [qz_window setAcceptsMouseMovedEvents:YES];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1756
diff changeset
183 [qz_window setLevel:CGShieldingWindowLevel ()];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1756
diff changeset
184 [qz_window makeKeyAndOrderFront:nil];
761
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185
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diff changeset
186 port =[[qz_window contentView] qdPort];
761
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187 SetPort (port);
1895
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188
761
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diff changeset
189 /*
1895
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diff changeset
190 BUG: would like to remove white flash when window kicks in
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1756
diff changeset
191 {
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
192 Rect r;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
193 SetRect (&r, 0, 0, SDL_VideoSurface->w, SDL_VideoSurface->h);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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194 PaintRect (&r);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
195 QDFlushPortBuffer (port, nil);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
196 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
197 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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198 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
199 port =[window_view qdPort];
761
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diff changeset
200 SetPort (port);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
201 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
202
761
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diff changeset
203 SetIdentityMatrix (yuv_matrix);
1895
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diff changeset
204
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
205 HLock ((Handle) yuv_idh);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
206
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
207 (**yuv_idh).idSize = sizeof (ImageDescription);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
208 (**yuv_idh).cType = codec;
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
209 (**yuv_idh).version = 1;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210 (**yuv_idh).revisionLevel = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
211 (**yuv_idh).width = width;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212 (**yuv_idh).height = height;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1756
diff changeset
213 (**yuv_idh).hRes = Long2Fix (72);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
214 (**yuv_idh).vRes = Long2Fix (72);
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
215 (**yuv_idh).spatialQuality = codecLosslessQuality;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216 (**yuv_idh).frameCount = 1;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217 (**yuv_idh).clutID = -1;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218 (**yuv_idh).dataSize = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
219 (**yuv_idh).depth = 24;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1756
diff changeset
220
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
221 HUnlock ((Handle) yuv_idh);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1756
diff changeset
222
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
223 err = DecompressSequenceBeginS (&yuv_seq,
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
224 yuv_idh,
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
225 NULL,
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226 0,
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227 port,
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
228 NULL,
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
229 NULL,
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
230 yuv_matrix,
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
231 0,
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232 NULL,
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 codecFlagUseImageBuffer,
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1756
diff changeset
234 codecLosslessQuality, yuv_codec);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
235
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236 if (err != noErr) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237 SDL_SetError ("Error trying to start YUV codec.");
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 return NULL;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
240
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
241 overlay = (SDL_Overlay *) SDL_malloc (sizeof (*overlay));
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 if (overlay == NULL) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
243 SDL_OutOfMemory ();
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 return NULL;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
246
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
247 overlay->format = format;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
248 overlay->w = width;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
249 overlay->h = height;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
250 overlay->planes = 3;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1756
diff changeset
251 overlay->hw_overlay = 1;
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
252 {
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253 int offset;
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254 Uint8 **pixels;
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255 Uint16 *pitches;
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256 int plane2, plane3;
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257
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258 if (format == SDL_IYUV_OVERLAY) {
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259
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260 plane2 = 1; /* Native codec format */
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261 plane3 = 2;
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262 } else if (format == SDL_YV12_OVERLAY) {
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263
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264 /* switch the U and V planes */
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265 plane2 = 2; /* U plane maps to plane 3 */
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266 plane3 = 1; /* V plane maps to plane 2 */
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267 } else {
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268 SDL_SetError ("Unsupported YUV format");
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269 return NULL;
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270 }
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271
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272 pixels = (Uint8 **) SDL_malloc (sizeof (*pixels) * 3);
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273 pitches = (Uint16 *) SDL_malloc (sizeof (*pitches) * 3);
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274 if (pixels == NULL || pitches == NULL) {
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275 SDL_OutOfMemory ();
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276 return NULL;
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277 }
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278
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279 yuv_pixmap = (PlanarPixmapInfoYUV420 *)
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280 SDL_malloc (sizeof (PlanarPixmapInfoYUV420) +
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281 (width * height * 2));
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282 if (yuv_pixmap == NULL) {
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283 SDL_OutOfMemory ();
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284 return NULL;
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285 }
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286
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287 /* CHECK_ALIGN(yuv_pixmap); */
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288 offset = sizeof (PlanarPixmapInfoYUV420);
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289 /* offset += ALIGN(offset); */
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290 /* CHECK_ALIGN(offset); */
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291
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292 pixels[0] = (Uint8 *) yuv_pixmap + offset;
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293 /* CHECK_ALIGN(pixels[0]); */
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294
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295 pitches[0] = width;
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296 yuv_pixmap->componentInfoY.offset = offset;
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297 yuv_pixmap->componentInfoY.rowBytes = width;
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298
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299 offset += width * height;
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300 pixels[plane2] = (Uint8 *) yuv_pixmap + offset;
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301 pitches[plane2] = width / 2;
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302 yuv_pixmap->componentInfoCb.offset = offset;
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303 yuv_pixmap->componentInfoCb.rowBytes = width / 2;
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304
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305 offset += (width * height / 4);
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306 pixels[plane3] = (Uint8 *) yuv_pixmap + offset;
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307 pitches[plane3] = width / 2;
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308 yuv_pixmap->componentInfoCr.offset = offset;
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309 yuv_pixmap->componentInfoCr.rowBytes = width / 2;
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310
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311 overlay->pixels = pixels;
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312 overlay->pitches = pitches;
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313 }
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314
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315 overlay->hwfuncs = SDL_malloc (sizeof (*overlay->hwfuncs));
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316 if (overlay->hwfuncs == NULL) {
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317 SDL_OutOfMemory ();
761
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318 return NULL;
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319 }
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320
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321 overlay->hwfuncs->Lock = QZ_LockYUV;
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322 overlay->hwfuncs->Unlock = QZ_UnlockYUV;
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323 overlay->hwfuncs->Display = QZ_DisplayYUV;
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324 overlay->hwfuncs->FreeHW = QZ_FreeHWYUV;
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325
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326 yuv_width = overlay->w;
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327 yuv_height = overlay->h;
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328
761
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329 return overlay;
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330 }