FFmpeg
mastering_display_metadata.h
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1 /*
2  * Copyright (c) 2016 Neil Birkbeck <neil.birkbeck@gmail.com>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVUTIL_MASTERING_DISPLAY_METADATA_H
22 #define AVUTIL_MASTERING_DISPLAY_METADATA_H
23 
24 #include "frame.h"
25 #include "rational.h"
26 
27 
28 /**
29  * Mastering display metadata capable of representing the color volume of
30  * the display used to master the content (SMPTE 2086:2014).
31  *
32  * To be used as payload of a AVFrameSideData or AVPacketSideData with the
33  * appropriate type.
34  *
35  * @note The struct should be allocated with av_mastering_display_metadata_alloc()
36  * and its size is not a part of the public ABI.
37  */
39  /**
40  * CIE 1931 xy chromaticity coords of color primaries (r, g, b order).
41  */
43 
44  /**
45  * CIE 1931 xy chromaticity coords of white point.
46  */
48 
49  /**
50  * Min luminance of mastering display (cd/m^2).
51  */
53 
54  /**
55  * Max luminance of mastering display (cd/m^2).
56  */
58 
59  /**
60  * Flag indicating whether the display primaries (and white point) are set.
61  */
63 
64  /**
65  * Flag indicating whether the luminance (min_ and max_) have been set.
66  */
68 
70 
71 /**
72  * Allocate an AVMasteringDisplayMetadata structure and set its fields to
73  * default values. The resulting struct can be freed using av_freep().
74  *
75  * @return An AVMasteringDisplayMetadata filled with default values or NULL
76  * on failure.
77  */
79 
80 /**
81  * Allocate a complete AVMasteringDisplayMetadata and add it to the frame.
82  *
83  * @param frame The frame which side data is added to.
84  *
85  * @return The AVMasteringDisplayMetadata structure to be filled by caller.
86  */
88 
89 /**
90  * Content light level needed by to transmit HDR over HDMI (CTA-861.3).
91  *
92  * To be used as payload of a AVFrameSideData or AVPacketSideData with the
93  * appropriate type.
94  *
95  * @note The struct should be allocated with av_content_light_metadata_alloc()
96  * and its size is not a part of the public ABI.
97  */
98 typedef struct AVContentLightMetadata {
99  /**
100  * Max content light level (cd/m^2).
101  */
102  unsigned MaxCLL;
103 
104  /**
105  * Max average light level per frame (cd/m^2).
106  */
107  unsigned MaxFALL;
109 
110 /**
111  * Allocate an AVContentLightMetadata structure and set its fields to
112  * default values. The resulting struct can be freed using av_freep().
113  *
114  * @return An AVContentLightMetadata filled with default values or NULL
115  * on failure.
116  */
118 
119 /**
120  * Allocate a complete AVContentLightMetadata and add it to the frame.
121  *
122  * @param frame The frame which side data is added to.
123  *
124  * @return The AVContentLightMetadata structure to be filled by caller.
125  */
127 
128 #endif /* AVUTIL_MASTERING_DISPLAY_METADATA_H */
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
unsigned MaxCLL
Max content light level (cd/m^2).
AVRational white_point[2]
CIE 1931 xy chromaticity coords of white point.
int has_primaries
Flag indicating whether the display primaries (and white point) are set.
ptrdiff_t size
Definition: opengl_enc.c:100
int has_luminance
Flag indicating whether the luminance (min_ and max_) have been set.
AVContentLightMetadata * av_content_light_metadata_alloc(size_t *size)
Allocate an AVContentLightMetadata structure and set its fields to default values.
Content light level needed by to transmit HDR over HDMI (CTA-861.3).
AVMasteringDisplayMetadata * av_mastering_display_metadata_alloc(void)
Allocate an AVMasteringDisplayMetadata structure and set its fields to default values.
AVRational max_luminance
Max luminance of mastering display (cd/m^2).
reference-counted frame API
AVRational min_luminance
Min luminance of mastering display (cd/m^2).
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Rational number (pair of numerator and denominator).
Definition: rational.h:58
Mastering display metadata capable of representing the color volume of the display used to master the...
AVMasteringDisplayMetadata * av_mastering_display_metadata_create_side_data(AVFrame *frame)
Allocate a complete AVMasteringDisplayMetadata and add it to the frame.
AVContentLightMetadata * av_content_light_metadata_create_side_data(AVFrame *frame)
Allocate a complete AVContentLightMetadata and add it to the frame.
AVRational display_primaries[3][2]
CIE 1931 xy chromaticity coords of color primaries (r, g, b order).
Utilties for rational number calculation.
unsigned MaxFALL
Max average light level per frame (cd/m^2).