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Fix bug in MED mapper protection bit implementation
author Michael Pavone <pavone@retrodev.com>
date Sun, 28 Apr 2024 23:33:11 -0700
parents 9d68799f945b
children
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1 #ifndef FLAC_H_
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2 #define FLAC_H_
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3
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4 #include <stdint.h>
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5 #include <stdio.h>
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6
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7 typedef struct flac_file flac_file;
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8
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9 typedef uint8_t (*flac_read_fun)(flac_file *f);
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10 typedef void (*flac_seek_fun)(flac_file *f, uint32_t offset, uint8_t relative);
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11 typedef uint32_t (*flac_tell_fun)(flac_file *f);
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12
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13 typedef struct {
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14 uint32_t allocated_samples;
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15 int32_t *decoded;
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16 } flac_subframe;
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17
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18 typedef struct {
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19 uint64_t sample_number;
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20 uint64_t offset;
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21 uint16_t sample_count;
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22 } flac_seekpoint;
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23
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24 struct flac_file {
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25 uint64_t total_samples;
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26 uint64_t frame_start_sample;
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27 void *read_data;
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28 flac_read_fun read_byte;
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29 flac_seek_fun seek;
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30 flac_tell_fun tell;
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31 flac_subframe *subframes;
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32 flac_seekpoint *seekpoints;
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33 uint32_t num_seekpoints;
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34 uint32_t offset;
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35 uint32_t buffer_size;
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36 uint32_t first_frame_offset;
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37
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38 uint32_t frame_sample_pos;
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39
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40 uint32_t sample_rate;
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41 uint32_t frame_sample_rate;
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42 uint32_t frame_block_size;
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43 uint8_t bits_per_sample;
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44 uint8_t frame_bits_per_sample;
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45 uint8_t channels;
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46 uint8_t frame_channels;
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47 uint8_t frame_joint_stereo;
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48 uint8_t subframe_alloc;
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49
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50 uint8_t cur_byte;
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51 uint8_t bits;
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52 };
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53
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54 flac_file *flac_file_from_buffer(void *buffer, uint32_t size);
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55 flac_file *flac_file_from_file(FILE *file);
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56 uint8_t flac_get_sample(flac_file *f, int16_t *out, uint8_t desired_channels);
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57 void flac_seek(flac_file *f, uint64_t sample_number);
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58
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59 #endif //FLAC_H_