FFmpeg
hwcontext_videotoolbox.h
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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 
26 #include "frame.h"
27 #include "pixfmt.h"
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 and AVHWFramesContext.hwctx are always
43  * NULL.
44  */
45 
46 /**
47  * Convert a VideoToolbox (actually CoreVideo) format to AVPixelFormat.
48  * Returns AV_PIX_FMT_NONE if no known equivalent was found.
49  */
51 
52 /**
53  * Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format.
54  * Returns 0 if no known equivalent was found.
55  */
57 
58 /**
59  * Same as av_map_videotoolbox_format_from_pixfmt function, but can map and
60  * return full range pixel formats via a flag.
61  */
63 
64 /**
65  * Convert an AVChromaLocation to a VideoToolbox/CoreVideo chroma location string.
66  * Returns 0 if no known equivalent was found.
67  */
69 
70 /**
71  * Convert an AVColorSpace to a VideoToolbox/CoreVideo color matrix string.
72  * Returns 0 if no known equivalent was found.
73  */
75 
76 /**
77  * Convert an AVColorPrimaries to a VideoToolbox/CoreVideo color primaries string.
78  * Returns 0 if no known equivalent was found.
79  */
81 
82 /**
83  * Convert an AVColorTransferCharacteristic to a VideoToolbox/CoreVideo color transfer
84  * function string.
85  * Returns 0 if no known equivalent was found.
86  */
88 
89 /**
90  * Update a CVPixelBufferRef's metadata to based on an AVFrame.
91  * Returns 0 if no known equivalent was found.
92  */
93 int av_vt_pixbuf_set_attachments(void *log_ctx,
94  CVPixelBufferRef pixbuf, const struct AVFrame *src);
95 
96 #endif /* AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H */
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
space
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated space
Definition: undefined.txt:4
av_map_videotoolbox_format_from_pixfmt
uint32_t av_map_videotoolbox_format_from_pixfmt(enum AVPixelFormat pix_fmt)
Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format.
Definition: hwcontext_videotoolbox.c:147
AVColorTransferCharacteristic
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:498
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
AVColorPrimaries
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:473
full_range
bool full_range
Definition: hwcontext_videotoolbox.c:42
av_map_videotoolbox_format_to_pixfmt
enum AVPixelFormat av_map_videotoolbox_format_to_pixfmt(uint32_t cv_fmt)
Convert a VideoToolbox (actually CoreVideo) format to AVPixelFormat.
Definition: hwcontext_videotoolbox.c:137
pix_fmt
static enum AVPixelFormat pix_fmt
Definition: demuxing_decoding.c:41
av_map_videotoolbox_color_trc_from_av
CFStringRef av_map_videotoolbox_color_trc_from_av(enum AVColorTransferCharacteristic trc)
Convert an AVColorTransferCharacteristic to a VideoToolbox/CoreVideo color transfer function string.
Definition: hwcontext_videotoolbox.c:463
av_map_videotoolbox_chroma_loc_from_av
CFStringRef av_map_videotoolbox_chroma_loc_from_av(enum AVChromaLocation loc)
Convert an AVChromaLocation to a VideoToolbox/CoreVideo chroma location string.
Definition: hwcontext_videotoolbox.c:375
cv_fmt
uint32_t cv_fmt
Definition: hwcontext_videotoolbox.c:41
av_map_videotoolbox_color_matrix_from_av
CFStringRef av_map_videotoolbox_color_matrix_from_av(enum AVColorSpace space)
Convert an AVColorSpace to a VideoToolbox/CoreVideo color matrix string.
Definition: hwcontext_videotoolbox.c:411
av_map_videotoolbox_format_from_pixfmt2
uint32_t av_map_videotoolbox_format_from_pixfmt2(enum AVPixelFormat pix_fmt, bool full_range)
Same as av_map_videotoolbox_format_from_pixfmt function, but can map and return full range pixel form...
Definition: hwcontext_videotoolbox.c:152
av_vt_pixbuf_set_attachments
int av_vt_pixbuf_set_attachments(void *log_ctx, CVPixelBufferRef pixbuf, const struct AVFrame *src)
Update a CVPixelBufferRef's metadata to based on an AVFrame.
av_map_videotoolbox_color_primaries_from_av
CFStringRef av_map_videotoolbox_color_primaries_from_av(enum AVColorPrimaries pri)
Convert an AVColorPrimaries to a VideoToolbox/CoreVideo color primaries string.
Definition: hwcontext_videotoolbox.c:438
frame.h
AVChromaLocation
AVChromaLocation
Location of chroma samples.
Definition: pixfmt.h:620
AVColorSpace
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:527
pixfmt.h
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418