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annotate render_audio.h @ 1908:c3d49c338224

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Fix stateview target
author Michael Pavone <pavone@retrodev.com>
date Thu, 26 Mar 2020 23:53:35 -0700
parents 4c322abd9fa5
children cfd53c94fffb
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1 #ifndef RENDER_AUDIO_H_
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2 #define RENDER_AUDIO_H_
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3
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4 #include <stdint.h>
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5 typedef enum {
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6 RENDER_AUDIO_S16,
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7 RENDER_AUDIO_FLOAT,
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8 RENDER_AUDIO_UNKNOWN
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9 } render_audio_format;
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10
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11 typedef struct {
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12 void *opaque;
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13 int16_t *front;
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14 int16_t *back;
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15 double dt;
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16 uint64_t buffer_fraction;
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17 uint64_t buffer_inc;
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18 float gain_mult;
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19 uint32_t buffer_pos;
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20 uint32_t read_start;
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21 uint32_t read_end;
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22 uint32_t lowpass_alpha;
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23 uint32_t mask;
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24 int16_t last_left;
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25 int16_t last_right;
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26 uint8_t num_channels;
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27 uint8_t front_populated;
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28 } audio_source;
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29
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30 //public interface
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31 audio_source *render_audio_source(uint64_t master_clock, uint64_t sample_divider, uint8_t channels);
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32 void render_audio_source_gaindb(audio_source *src, float gain);
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33 void render_audio_adjust_clock(audio_source *src, uint64_t master_clock, uint64_t sample_divider);
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34 void render_put_mono_sample(audio_source *src, int16_t value);
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35 void render_put_stereo_sample(audio_source *src, int16_t left, int16_t right);
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36 void render_pause_source(audio_source *src);
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37 void render_resume_source(audio_source *src);
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38 void render_free_source(audio_source *src);
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39 //interface for render backends
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40 void render_audio_initialized(render_audio_format format, uint32_t rate, uint8_t channels, uint32_t buffer_size, int sample_size);
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41 int mix_and_convert(unsigned char *byte_stream, int len, int *min_remaining_out);
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42 uint8_t all_sources_ready(void);
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43 void render_audio_adjust_speed(float adjust_ratio);
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44 //to be implemented by render backend
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45 uint8_t render_is_audio_sync(void);
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46 void render_buffer_consumed(audio_source *src);
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47 void *render_new_audio_opaque(void);
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48 void render_free_audio_opaque(void *opaque);
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49 void render_lock_audio(void);
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50 void render_unlock_audio(void);
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51 uint32_t render_min_buffered(void);
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52 uint32_t render_audio_syncs_per_sec(void);
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53 void render_audio_created(audio_source *src);
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54 void render_do_audio_ready(audio_source *src);
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55 void render_source_paused(audio_source *src, uint8_t remaining_sources);
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56 void render_source_resumed(audio_source *src);
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57 #endif //RENDER_AUDIO_H_