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2134
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1 /*
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2 * VDA HW acceleration
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3 *
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4 * copyright (c) 2011 Sebastien Zwickert
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5 *
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6 * This file is part of FFmpeg.
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7 *
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8 * FFmpeg is free software; you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public
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10 * License as published by the Free Software Foundation; either
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11 * version 2.1 of the License, or (at your option) any later version.
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12 *
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13 * FFmpeg is distributed in the hope that it will be useful,
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14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with FFmpeg; if not, write to the Free Software
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20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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21 */
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22
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23 #ifndef AVCODEC_VDA_H
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24 #define AVCODEC_VDA_H
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25
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26 /**
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27 * @file
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28 * @ingroup lavc_codec_hwaccel_vda
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29 * Public libavcodec VDA header.
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30 */
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31
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32 #include <stdint.h>
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33
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34 // emmintrin.h is unable to compile with -std=c99 -Werror=missing-prototypes
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35 // http://openradar.appspot.com/8026390
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36 #undef __GNUC_STDC_INLINE__
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37
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38 #define Picture QuickdrawPicture
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39 #include <VideoDecodeAcceleration/VDADecoder.h>
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40 #undef Picture
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41
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42 #include "libavcodec/version.h"
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43
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44 /**
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45 * @defgroup lavc_codec_hwaccel_vda VDA
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46 * @ingroup lavc_codec_hwaccel
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47 *
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48 * @{
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49 */
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50
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51 /**
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52 * This structure is used to provide the necessary configurations and data
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53 * to the VDA FFmpeg HWAccel implementation.
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54 *
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55 * The application must make it available as AVCodecContext.hwaccel_context.
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56 */
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57 struct vda_context {
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58 /**
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59 * VDA decoder object.
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60 *
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61 * - encoding: unused
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62 * - decoding: Set/Unset by libavcodec.
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63 */
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64 VDADecoder decoder;
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65
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66 /**
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67 * The Core Video pixel buffer that contains the current image data.
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68 *
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69 * encoding: unused
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70 * decoding: Set by libavcodec. Unset by user.
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71 */
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72 CVPixelBufferRef cv_buffer;
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73
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74 /**
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75 * Use the hardware decoder in synchronous mode.
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76 *
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77 * encoding: unused
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78 * decoding: Set by user.
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79 */
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80 int use_sync_decoding;
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81
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82 /**
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83 * The frame width.
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84 *
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85 * - encoding: unused
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86 * - decoding: Set/Unset by user.
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87 */
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88 int width;
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89
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90 /**
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91 * The frame height.
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92 *
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93 * - encoding: unused
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94 * - decoding: Set/Unset by user.
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95 */
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96 int height;
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97
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98 /**
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99 * The frame format.
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100 *
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101 * - encoding: unused
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102 * - decoding: Set/Unset by user.
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103 */
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104 int format;
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105
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106 /**
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107 * The pixel format for output image buffers.
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108 *
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109 * - encoding: unused
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110 * - decoding: Set/Unset by user.
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111 */
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112 OSType cv_pix_fmt_type;
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113
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114 /**
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115 * The current bitstream buffer.
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116 *
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117 * - encoding: unused
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118 * - decoding: Set/Unset by libavcodec.
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119 */
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120 uint8_t *priv_bitstream;
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121
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122 /**
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123 * The current size of the bitstream.
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124 *
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125 * - encoding: unused
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126 * - decoding: Set/Unset by libavcodec.
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127 */
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128 int priv_bitstream_size;
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129
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130 /**
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131 * The reference size used for fast reallocation.
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132 *
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133 * - encoding: unused
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134 * - decoding: Set/Unset by libavcodec.
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135 */
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136 int priv_allocated_size;
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137 };
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138
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139 /** Create the video decoder. */
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140 int ff_vda_create_decoder(struct vda_context *vda_ctx,
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141 uint8_t *extradata,
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142 int extradata_size);
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143
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144 /** Destroy the video decoder. */
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145 int ff_vda_destroy_decoder(struct vda_context *vda_ctx);
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146
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147 /**
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148 * @}
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149 */
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150
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151 #endif /* AVCODEC_VDA_H */
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