97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/*
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* Copyright (c) 2024, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 3-Clause Clear License
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* and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
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* License was not distributed with this source code in the LICENSE file, you
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* can obtain it at www.aomedia.org/license/software-license/bsd-3-c-c. If the
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* Alliance for Open Media Patent License 1.0 was not distributed with this
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* source code in the PATENTS file, you can obtain it at
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* www.aomedia.org/license/patent.
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*/
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/**
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* @file atom.h
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* @brief atom.
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* @version 0.1
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* @date Created 03/03/2023
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**/
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#ifndef ATOM_H_INCLUDED
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#define ATOM_H_INCLUDED
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#include <stdint.h>
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#include <stdio.h>
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#pragma pack(push, 1)
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define atom_type(c1, c2, c3, c4) \
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(((c1) << 0) + ((c2) << 8) + ((c3) << 16) + ((c4) << 24))
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#elif __BYTE_ORDER == __BIG_ENDIAN
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#define atom_type(c1, c2, c3, c4) \
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(((c1) << 24) + ((c2) << 16) + ((c3) << 8) + ((c4) << 0))
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#endif
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#define atom_type_string(t) ((char[5]){((t) >> 0) & 0xff, 0, 0, 0, 0})
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enum {
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ATOM_TYPE_FTYP = atom_type('f', 't', 'y', 'p'),
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ATOM_TYPE_MDAT = atom_type('m', 'd', 'a', 't'),
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ATOM_TYPE_MOOV = atom_type('m', 'o', 'o', 'v'),
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ATOM_TYPE_MOOF = atom_type('m', 'o', 'o', 'f'),
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ATOM_TYPE_TRAK = atom_type('t', 'r', 'a', 'k'),
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ATOM_TYPE_TKHD = atom_type('t', 'k', 'h', 'd'),
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ATOM_TYPE_TRAF = atom_type('t', 'r', 'a', 'f'),
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ATOM_TYPE_TRUN = atom_type('t', 'r', 'u', 'n'),
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ATOM_TYPE_MVHD = atom_type('m', 'v', 'h', 'd'),
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ATOM_TYPE_MDIA = atom_type('m', 'd', 'i', 'a'),
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ATOM_TYPE_MINF = atom_type('m', 'i', 'n', 'f'),
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ATOM_TYPE_STBL = atom_type('s', 't', 'b', 'l'),
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ATOM_TYPE_STTS = atom_type('s', 't', 't', 's'),
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ATOM_TYPE_STSC = atom_type('s', 't', 's', 'c'),
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ATOM_TYPE_STSZ = atom_type('s', 't', 's', 'z'),
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ATOM_TYPE_STCO = atom_type('s', 't', 'c', 'o'),
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};
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typedef struct atom_header_s {
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uint32_t size;
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uint32_t type;
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uint64_t size_extended;
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} atom_header;
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typedef struct atom_s {
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unsigned char *data;
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unsigned char *data_end;
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uint32_t type;
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uint32_t header_size;
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uint32_t size;
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uint32_t apos;
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int depth;
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} atom;
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typedef struct atom_mvhd_v1_s {
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uint8_t version;
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uint8_t flags[3];
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uint32_t created;
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uint32_t modified;
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uint32_t scale;
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uint32_t duration;
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uint32_t speed;
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uint16_t volume;
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uint16_t reserved[5];
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uint32_t matrix[9];
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uint64_t quicktime_preview;
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uint32_t quicktime_poster;
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uint64_t quicktime_selection;
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uint32_t quicktime_current_time;
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uint32_t next_track_id;
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} atom_mvhd_v1;
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void atom_set_logger(FILE *logger);
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int atom_dump(FILE *fp, uint64_t apos, uint32_t tmp);
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#pragma pack(pop)
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#endif /* ATOM_H_INCLUDED */
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