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78 lines
1.9 KiB
78 lines
1.9 KiB
/****************************************************************************
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MP4 input module
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Copyright (C) 2017 Krzysztof Nikiel
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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#include <stdint.h>
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typedef struct
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{
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uint32_t len;
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uint32_t offset;
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} frame_info_t;
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typedef struct
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{
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uint32_t firstchunk;
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uint32_t samplesperchunk;
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} slice_info_t;
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typedef struct
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{
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uint32_t ctime, mtime;
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uint32_t samplerate;
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// total sound samples
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uint32_t samples;
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uint32_t channels;
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// sample depth
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uint32_t bits;
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// buffer config
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uint32_t buffersize;
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uint32_t bitratemax;
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uint32_t bitrateavg;
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// frame size / offsets
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struct
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{
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frame_info_t *info;
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slice_info_t *map;
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uint32_t nsamples;
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uint32_t nsclices;
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uint32_t current;
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uint32_t maxsize;
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} frame;
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// AudioSpecificConfig data:
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struct
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{
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uint8_t buf[10];
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uint32_t size;
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} asc;
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struct {
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uint32_t size;
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uint8_t *data;
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} bitbuf;
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struct {
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int header;
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int tags;
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} verbose;
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} mp4config_t;
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extern mp4config_t mp4config;
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int mp4read_open(char *name);
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int mp4read_seek(uint32_t framenum);
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int mp4read_frame(void);
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int mp4read_close(void);
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