Mercurial > repos > blastem
diff flac.h @ 2296:789802d99629
Add basic FLAC decoder and add FLAC playback support to the media player
author | Michael Pavone <pavone@retrodev.com> |
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date | Sun, 19 Feb 2023 21:12:46 -0800 |
parents | |
children | 9d68799f945b |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flac.h Sun Feb 19 21:12:46 2023 -0800 @@ -0,0 +1,48 @@ +#ifndef FLAC_H_ +#define FLAC_H_ + +#include <stdint.h> +#include <stdio.h> + +typedef struct flac_file flac_file; + +typedef uint8_t (*flac_read)(flac_file *f); +typedef void (*flac_seek)(flac_file *f, uint32_t offset, uint8_t relative); + +typedef struct { + uint32_t allocated_samples; + int32_t *decoded; +} flac_subframe; + +struct flac_file { + uint64_t total_samples; + uint64_t frame_start_sample; + void *read_data; + flac_read read_byte; + flac_seek seek; + flac_subframe *subframes; + uint32_t offset; + uint32_t buffer_size; + + uint32_t frame_sample_pos; + uint32_t remaining_frame_samples; + + uint32_t sample_rate; + uint32_t frame_sample_rate; + uint32_t frame_block_size; + uint8_t bits_per_sample; + uint8_t frame_bits_per_sample; + uint8_t channels; + uint8_t frame_channels; + uint8_t frame_joint_stereo; + uint8_t subframe_alloc; + + uint8_t cur_byte; + uint8_t bits; +}; + +flac_file *flac_file_from_buffer(void *buffer, uint32_t size); +flac_file *flac_file_from_file(FILE *file); +uint8_t flac_get_sample(flac_file *f, int16_t *out, uint8_t desired_channels); + +#endif //FLAC_H_