1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #ifndef AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H
20 #define AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H
21
22 #include <stdint.h>
23
24 #include <VideoToolbox/VideoToolbox.h>
25
28
29 /**
30 * @file
31 * An API-specific header for AV_HWDEVICE_TYPE_VIDEOTOOLBOX.
32 *
33 * This API supports frame allocation using a native CVPixelBufferPool
34 * instead of an AVBufferPool.
35 *
36 * If the API user sets a custom pool, AVHWFramesContext.pool must return
37 * AVBufferRefs whose data pointer is a CVImageBufferRef or CVPixelBufferRef.
38 * Note that the underlying CVPixelBuffer could be retained by OS frameworks
39 * depending on application usage, so it is preferable to let CoreVideo manage
40 * the pool using the default implementation.
41 *
42 * Currently AVHWDeviceContext.hwctx are always NULL.
43 */
44
48
49 /**
50 * Convert a VideoToolbox (actually CoreVideo) format to AVPixelFormat.
51 * Returns AV_PIX_FMT_NONE if no known equivalent was found.
52 */
54
55 /**
56 * Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format.
57 * Returns 0 if no known equivalent was found.
58 */
60
61 /**
62 * Same as av_map_videotoolbox_format_from_pixfmt function, but can map and
63 * return full range pixel formats via a flag.
64 */
66
67 /**
68 * Convert an AVChromaLocation to a VideoToolbox/CoreVideo chroma location string.
69 * Returns 0 if no known equivalent was found.
70 */
72
73 /**
74 * Convert an AVColorSpace to a VideoToolbox/CoreVideo color matrix string.
75 * Returns 0 if no known equivalent was found.
76 */
78
79 /**
80 * Convert an AVColorPrimaries to a VideoToolbox/CoreVideo color primaries string.
81 * Returns 0 if no known equivalent was found.
82 */
84
85 /**
86 * Convert an AVColorTransferCharacteristic to a VideoToolbox/CoreVideo color transfer
87 * function string.
88 * Returns 0 if no known equivalent was found.
89 */
91
92 /**
93 * Set CVPixelBufferRef's metadata based on an AVFrame.
94 *
95 * Sets/unsets the CVPixelBuffer attachments to match as closely as possible the
96 * AVFrame metadata. To prevent inconsistent attachments, the attachments for properties
97 * that could not be matched or are unspecified in the given AVFrame are unset. So if
98 * any attachments already covered by AVFrame metadata need to be set to a specific
99 * value, this should happen after calling this function.
100 *
101 * Returns < 0 in case of an error.
102 */
104 CVPixelBufferRef pixbuf,
const struct AVFrame *
src);
105
106 #endif /* AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H */