38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
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#include "mov-internal.h"
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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// 8.8.3 Track Extends Box (p69)
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int mov_read_trex(struct mov_t* mov, const struct mov_box_t* box)
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{
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uint32_t track_ID;
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struct mov_track_t* track;
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(void)box;
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mov_buffer_r32(&mov->io); /* version & flags */
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track_ID = mov_buffer_r32(&mov->io); /* track_ID */
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track = mov_fetch_track(mov, track_ID);
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if (NULL == track) return -1;
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track->trex.default_sample_description_index = mov_buffer_r32(&mov->io); /* default_sample_description_index */
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track->trex.default_sample_duration = mov_buffer_r32(&mov->io); /* default_sample_duration */
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track->trex.default_sample_size = mov_buffer_r32(&mov->io); /* default_sample_size */
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track->trex.default_sample_flags = mov_buffer_r32(&mov->io); /* default_sample_flags */
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return mov_buffer_error(&mov->io);
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}
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size_t mov_write_trex(const struct mov_t* mov)
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{
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mov_buffer_w32(&mov->io, 12 + 20); /* size */
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mov_buffer_write(&mov->io, "trex", 4);
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mov_buffer_w32(&mov->io, 0); /* version & flags */
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mov_buffer_w32(&mov->io, mov->track->tkhd.track_ID); /* track_ID */
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mov_buffer_w32(&mov->io, 1); /* default_sample_description_index */
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mov_buffer_w32(&mov->io, 0); /* default_sample_duration */
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mov_buffer_w32(&mov->io, 0); /* default_sample_size */
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mov_buffer_w32(&mov->io, 0); /* default_sample_flags */
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return 32;
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}
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