FFmpeg
av1.h
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1 /*
2  * AV1 helper functions for muxers
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 AVFORMAT_AV1_H
22 #define AVFORMAT_AV1_H
23 
24 #include <stdint.h>
25 
26 #include "avio.h"
27 
28 typedef struct AV1SequenceParameters {
43 
44 /**
45  * Filter out AV1 OBUs not meant to be present in ISOBMFF sample data and write
46  * the resulting bitstream to the provided AVIOContext.
47  *
48  * @param pb pointer to the AVIOContext where the filtered bitstream shall be
49  * written
50  * @param buf input data buffer
51  * @param size size of the input data buffer
52  *
53  * @return the amount of bytes written in case of success, a negative AVERROR
54  * code in case of failure
55  */
56 int ff_av1_filter_obus(AVIOContext *pb, const uint8_t *buf, int size);
57 
58 /**
59  * Filter out AV1 OBUs not meant to be present in ISOBMFF sample data and write
60  * the resulting bitstream to a newly allocated data buffer.
61  *
62  * @param pb pointer to the AVIOContext where the filtered bitstream shall be
63  * written
64  * @param buf input data buffer
65  * @param out pointer to pointer that will hold the allocated data buffer
66  * @param size size of the input data buffer. The size of the resulting output
67  data buffer will be written here
68  *
69  * @return the amount of bytes written in case of success, a negative AVERROR
70  * code in case of failure. On failure, out and size are unchanged
71  */
72 int ff_av1_filter_obus_buf(const uint8_t *buf, uint8_t **out, int *size);
73 
74 /**
75  * Parses a Sequence Header from the the provided buffer.
76  *
77  * @param seq pointer to the AV1SequenceParameters where the parsed values will
78  * be written
79  * @param buf input data buffer
80  * @param size size in bytes of the input data buffer
81  *
82  * @return >= 0 in case of success, a negative AVERROR code in case of failure
83  */
85 
86 /**
87  * Writes AV1 extradata (Sequence Header and Metadata OBUs) to the provided
88  * AVIOContext.
89  *
90  * @param pb pointer to the AVIOContext where the av1C box shall be written
91  * @param buf input data buffer
92  * @param size size in bytes of the input data buffer
93  *
94  * @return >= 0 in case of success, a negative AVERROR code in case of failure
95  */
96 int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size);
97 
98 #endif /* AVFORMAT_AV1_H */
Bytestream IO Context.
Definition: avio.h:161
Buffered I/O operations.
int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size)
Writes AV1 extradata (Sequence Header and Metadata OBUs) to the provided AVIOContext.
Definition: av1.c:320
uint8_t transfer_characteristics
Definition: av1.h:39
uint8_t chroma_sample_position
Definition: av1.h:36
uint8_t monochrome
Definition: av1.h:33
uint8_t chroma_subsampling_x
Definition: av1.h:34
uint8_t
int ff_av1_filter_obus(AVIOContext *pb, const uint8_t *buf, int size)
Filter out AV1 OBUs not meant to be present in ISOBMFF sample data and write the resulting bitstream ...
Definition: av1.c:30
ptrdiff_t size
Definition: opengl_enc.c:100
uint8_t color_range
Definition: av1.h:41
uint8_t color_description_present_flag
Definition: av1.h:37
int ff_av1_filter_obus_buf(const uint8_t *buf, uint8_t **out, int *size)
Filter out AV1 OBUs not meant to be present in ISOBMFF sample data and write the resulting bitstream ...
Definition: av1.c:60
void * buf
Definition: avisynth_c.h:766
int ff_av1_parse_seq_header(AV1SequenceParameters *seq, const uint8_t *buf, int size)
Parses a Sequence Header from the the provided buffer.
Definition: av1.c:290
uint8_t color_primaries
Definition: av1.h:38
uint8_t chroma_subsampling_y
Definition: av1.h:35
uint8_t level
Definition: av1.h:30
uint8_t tier
Definition: av1.h:31
FILE * out
Definition: movenc.c:54
uint8_t matrix_coefficients
Definition: av1.h:40
uint8_t bitdepth
Definition: av1.h:32
uint8_t profile
Definition: av1.h:29