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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:201
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.
static AVFrame * frame
ptrdiff_t size
Definition: opengl_enc.c:101
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).
Rational number (pair of numerator and denominator).
Definition: rational.h:58
Copyright (c) 2016 Neil Birkbeck neil.birkbeck@gmail.com
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).