FFmpeg
videotoolbox.h
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1 /*
2  * Videotoolbox hardware acceleration
3  *
4  * copyright (c) 2012 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_VIDEOTOOLBOX_H
24 #define AVCODEC_VIDEOTOOLBOX_H
25 
26 /**
27  * @file
28  * @ingroup lavc_codec_hwaccel_videotoolbox
29  * Public libavcodec Videotoolbox header.
30  */
31 
32 /**
33  * @defgroup lavc_codec_hwaccel_videotoolbox VideoToolbox Decoder
34  * @ingroup lavc_codec_hwaccel
35  *
36  * Hardware accelerated decoding using VideoToolbox on Apple Platforms
37  *
38  * @{
39  */
40 
41 #include <stdint.h>
42 
43 #define Picture QuickdrawPicture
44 #include <VideoToolbox/VideoToolbox.h>
45 #undef Picture
46 
47 #include "libavcodec/avcodec.h"
48 
49 #include "libavutil/attributes.h"
50 
51 /**
52  * This struct holds all the information that needs to be passed
53  * between the caller and libavcodec for initializing Videotoolbox decoding.
54  * Its size is not a part of the public ABI, it must be allocated with
55  * av_videotoolbox_alloc_context() and freed with av_free().
56  */
57 typedef struct AVVideotoolboxContext {
58  /**
59  * Videotoolbox decompression session object.
60  */
61  VTDecompressionSessionRef session;
62 
63  /**
64  * CVPixelBuffer Format Type that Videotoolbox will use for decoded frames.
65  * set by the caller. If this is set to 0, then no specific format is
66  * requested from the decoder, and its native format is output.
67  */
69 
70  /**
71  * CoreMedia Format Description that Videotoolbox will use to create the decompression session.
72  */
73  CMVideoFormatDescriptionRef cm_fmt_desc;
74 
75  /**
76  * CoreMedia codec type that Videotoolbox will use to create the decompression session.
77  */
80 
81 /**
82  * @}
83  */
84 
85 #endif /* AVCODEC_VIDEOTOOLBOX_H */
AVVideotoolboxContext::cm_codec_type
int cm_codec_type
CoreMedia codec type that Videotoolbox will use to create the decompression session.
Definition: videotoolbox.h:78
AVVideotoolboxContext
This struct holds all the information that needs to be passed between the caller and libavcodec for i...
Definition: videotoolbox.h:57
AVVideotoolboxContext::session
VTDecompressionSessionRef session
Videotoolbox decompression session object.
Definition: videotoolbox.h:61
AVVideotoolboxContext::cm_fmt_desc
CMVideoFormatDescriptionRef cm_fmt_desc
CoreMedia Format Description that Videotoolbox will use to create the decompression session.
Definition: videotoolbox.h:73
attributes.h
avcodec.h
AVVideotoolboxContext::cv_pix_fmt_type
OSType cv_pix_fmt_type
CVPixelBuffer Format Type that Videotoolbox will use for decoded frames.
Definition: videotoolbox.h:68