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comparison lib/libavcodec/vda.h @ 2134:992d2e6f907d

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preparation for libavcodec
author zipi
date Tue, 31 Dec 2013 14:52:14 +0000
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2133:e378232bfd36 2134:992d2e6f907d
1 /*
2 * VDA HW acceleration
3 *
4 * copyright (c) 2011 Sebastien Zwickert
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #ifndef AVCODEC_VDA_H
24 #define AVCODEC_VDA_H
25
26 /**
27 * @file
28 * @ingroup lavc_codec_hwaccel_vda
29 * Public libavcodec VDA header.
30 */
31
32 #include <stdint.h>
33
34 // emmintrin.h is unable to compile with -std=c99 -Werror=missing-prototypes
35 // http://openradar.appspot.com/8026390
36 #undef __GNUC_STDC_INLINE__
37
38 #define Picture QuickdrawPicture
39 #include <VideoDecodeAcceleration/VDADecoder.h>
40 #undef Picture
41
42 #include "libavcodec/version.h"
43
44 /**
45 * @defgroup lavc_codec_hwaccel_vda VDA
46 * @ingroup lavc_codec_hwaccel
47 *
48 * @{
49 */
50
51 /**
52 * This structure is used to provide the necessary configurations and data
53 * to the VDA FFmpeg HWAccel implementation.
54 *
55 * The application must make it available as AVCodecContext.hwaccel_context.
56 */
57 struct vda_context {
58 /**
59 * VDA decoder object.
60 *
61 * - encoding: unused
62 * - decoding: Set/Unset by libavcodec.
63 */
64 VDADecoder decoder;
65
66 /**
67 * The Core Video pixel buffer that contains the current image data.
68 *
69 * encoding: unused
70 * decoding: Set by libavcodec. Unset by user.
71 */
72 CVPixelBufferRef cv_buffer;
73
74 /**
75 * Use the hardware decoder in synchronous mode.
76 *
77 * encoding: unused
78 * decoding: Set by user.
79 */
80 int use_sync_decoding;
81
82 /**
83 * The frame width.
84 *
85 * - encoding: unused
86 * - decoding: Set/Unset by user.
87 */
88 int width;
89
90 /**
91 * The frame height.
92 *
93 * - encoding: unused
94 * - decoding: Set/Unset by user.
95 */
96 int height;
97
98 /**
99 * The frame format.
100 *
101 * - encoding: unused
102 * - decoding: Set/Unset by user.
103 */
104 int format;
105
106 /**
107 * The pixel format for output image buffers.
108 *
109 * - encoding: unused
110 * - decoding: Set/Unset by user.
111 */
112 OSType cv_pix_fmt_type;
113
114 /**
115 * The current bitstream buffer.
116 *
117 * - encoding: unused
118 * - decoding: Set/Unset by libavcodec.
119 */
120 uint8_t *priv_bitstream;
121
122 /**
123 * The current size of the bitstream.
124 *
125 * - encoding: unused
126 * - decoding: Set/Unset by libavcodec.
127 */
128 int priv_bitstream_size;
129
130 /**
131 * The reference size used for fast reallocation.
132 *
133 * - encoding: unused
134 * - decoding: Set/Unset by libavcodec.
135 */
136 int priv_allocated_size;
137 };
138
139 /** Create the video decoder. */
140 int ff_vda_create_decoder(struct vda_context *vda_ctx,
141 uint8_t *extradata,
142 int extradata_size);
143
144 /** Destroy the video decoder. */
145 int ff_vda_destroy_decoder(struct vda_context *vda_ctx);
146
147 /**
148 * @}
149 */
150
151 #endif /* AVCODEC_VDA_H */