reactor-c/audio__loop_8h_source.html

#ifndef AUDIO_LOOP_H

#define AUDIO_LOOP_H


#include "wave_file_reader.h" // Defines lf_waveform_t.

#include "tag.h"              // Defines instant_t.


#ifndef SAMPLE_RATE

#define SAMPLE_RATE 44100

#endif


#ifndef AUDIO_BUFFER_SIZE

#define AUDIO_BUFFER_SIZE 4410 // 1/10 second, 100 msec

#endif


#ifndef BUFFER_DURATION_NS

#define BUFFER_DURATION_NS 100000000LL

#endif


#ifndef NUM_CHANNELS

#define NUM_CHANNELS 1 // 2 for stereo

#endif


#ifndef MAX_AMPLITUDE

#define MAX_AMPLITUDE 32765

#endif


#ifndef NUM_NOTES

#define NUM_NOTES 8 // Maximum number of notes that can play simultaneously.

#endif


void lf_start_audio_loop(instant_t start_time);


void lf_stop_audio_loop();


int lf_play_audio_waveform(lf_waveform_t* waveform, float emphasis, instant_t start_time);


void add_to_sound(int index_offset, double value);


#endif // AUDIO_LOOP_H

instant_t
int64_t instant_t
Time instant.
Definition tag.h:101

lf_play_audio_waveform
int lf_play_audio_waveform(lf_waveform_t *waveform, float emphasis, instant_t start_time)
Play the specified waveform with the specified emphasis at the specified time.

lf_stop_audio_loop
void lf_stop_audio_loop()
Stop the audio loop thread.

lf_start_audio_loop
void lf_start_audio_loop(instant_t start_time)
Start an audio loop thread that becomes ready to receive audio amplitude samples via add_to_sound().

add_to_sound
void add_to_sound(int index_offset, double value)
Add the given value to the current write buffer at the specified index.

lf_waveform_t
Waveform in 16-bit linear-PCM format.
Definition wave_file_reader.h:50

tag.h
Time and tag definitions and functions for Lingua Franca.

start_time
instant_t start_time

wave_file_reader.h
Utility function for reading WAV audio files.