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comparison flac.h @ 2305:6aca1734d573

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Merge
author Michael Pavone <pavone@retrodev.com>
date Wed, 15 Mar 2023 19:28:11 -0700
parents 9d68799f945b
children
comparison
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2304:b3832f73444f 2305:6aca1734d573
1 #ifndef FLAC_H_
2 #define FLAC_H_
3
4 #include <stdint.h>
5 #include <stdio.h>
6
7 typedef struct flac_file flac_file;
8
9 typedef uint8_t (*flac_read_fun)(flac_file *f);
10 typedef void (*flac_seek_fun)(flac_file *f, uint32_t offset, uint8_t relative);
11 typedef uint32_t (*flac_tell_fun)(flac_file *f);
12
13 typedef struct {
14 uint32_t allocated_samples;
15 int32_t *decoded;
16 } flac_subframe;
17
18 typedef struct {
19 uint64_t sample_number;
20 uint64_t offset;
21 uint16_t sample_count;
22 } flac_seekpoint;
23
24 struct flac_file {
25 uint64_t total_samples;
26 uint64_t frame_start_sample;
27 void *read_data;
28 flac_read_fun read_byte;
29 flac_seek_fun seek;
30 flac_tell_fun tell;
31 flac_subframe *subframes;
32 flac_seekpoint *seekpoints;
33 uint32_t num_seekpoints;
34 uint32_t offset;
35 uint32_t buffer_size;
36 uint32_t first_frame_offset;
37
38 uint32_t frame_sample_pos;
39
40 uint32_t sample_rate;
41 uint32_t frame_sample_rate;
42 uint32_t frame_block_size;
43 uint8_t bits_per_sample;
44 uint8_t frame_bits_per_sample;
45 uint8_t channels;
46 uint8_t frame_channels;
47 uint8_t frame_joint_stereo;
48 uint8_t subframe_alloc;
49
50 uint8_t cur_byte;
51 uint8_t bits;
52 };
53
54 flac_file *flac_file_from_buffer(void *buffer, uint32_t size);
55 flac_file *flac_file_from_file(FILE *file);
56 uint8_t flac_get_sample(flac_file *f, int16_t *out, uint8_t desired_channels);
57 void flac_seek(flac_file *f, uint64_t sample_number);
58
59 #endif //FLAC_H_