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143 lines
3.1 KiB
C
143 lines
3.1 KiB
C
/*
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* Copyright (C) 2020-2025 ArtInChip Technology Co. Ltd
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* author: <qi.xu@artinchip.com>
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* Desc: mov
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*/
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#ifndef __MOV_H__
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#define __MOV_H__
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#include <unistd.h>
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#include "aic_parser.h"
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#include "mov_tags.h"
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struct mov_atom {
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uint32_t type;
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int64_t size;
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};
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struct mov_stsc {
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int first;
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int count;
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int id;
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};
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struct mov_stts {
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unsigned int count;
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int duration;
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};
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struct index_entry {
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int64_t pos;
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int64_t timestamp; // dts
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int size;
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int min_distance;
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};
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struct mov_stream_ctx {
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int index;
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int time_scale;
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int width;
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int height;
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int type; // enum aic_parser_stream_type
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enum CodecID id;
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uint32_t format;
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int stsd_version;
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int stsd_count;
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int cur_sample_idx;
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int channels; /* audio only*/
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int bits_per_sample; /* audio only*/
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int sample_rate; /* audio only*/
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unsigned int samples_per_frame;
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unsigned int bytes_per_frame;
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int extra_data_size;
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unsigned char *extra_data;
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int64_t nb_frames;
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int64_t duration;
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int dts_shift;
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int keyframe_count;
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int *keyframes; // parse from stss
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unsigned int ctts_idx;
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unsigned int ctts_count;
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struct mov_stts *ctts_data;
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// sample-to-chunk
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unsigned int stsc_idx;
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unsigned int stsc_count;
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int64_t stsc_offset;
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unsigned int stsc_first;
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unsigned int stsc_samples;
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unsigned int stsc_end;
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unsigned int chunk_sample_idx;
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// chunk offset
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unsigned int stco_idx;
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unsigned int stco_count;
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int64_t stco_offset;
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// sample size
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unsigned int stsz_idx;
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unsigned int stsz_count;
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int64_t stsz_offset;
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// key frames
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unsigned int stss_count;
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int64_t stss_offset;
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// sample duration
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unsigned int stts_idx;
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unsigned int stts_count;
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int64_t stts_offset;
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unsigned int stts_sample_duration;
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unsigned int stts_samples_acc;
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unsigned int stts_duration_acc;
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int64_t cur_dts;
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unsigned int cur_sample_duration;
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unsigned int chunk_sample_size; // sample size in one chunk accumulation
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int chunk_idx;
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int ctts_index;
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int ctts_sample;
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unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
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unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
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// should delete
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int nb_index_entries;
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struct index_entry *index_entries;
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};
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#define MAX_TRACK_NUM 8
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struct aic_mov_parser {
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struct aic_parser base;
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struct aic_stream* stream;
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int atom_depth;
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int find_moov;
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int find_mdat;
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int isom; // 1 if files is ISO Media (mp4/3gp)
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int time_scale; // time scale in mvhd
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int64_t duration; // duration of the longest track, parse from mvhd
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int movie_display_matrix[3][3]; ///< display matrix from mvhd
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int nb_streams;
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struct mov_stream_ctx* streams[MAX_TRACK_NUM];
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struct index_entry cur_sample;
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};
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int mov_read_header(struct aic_mov_parser *c);
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int mov_close(struct aic_mov_parser *c);
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int mov_peek_packet(struct aic_mov_parser *c, struct aic_parser_packet *pkt);
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int mov_seek_packet(struct aic_mov_parser *c, s64 pts);
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#endif
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