79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
// audio.h
|
|
#pragma once
|
|
#ifndef AUDIO_H
|
|
#define AUDIO_H
|
|
|
|
#ifdef __cplusplus
|
|
#include <cstdint>
|
|
extern "C" {
|
|
#else
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#endif
|
|
|
|
typedef struct audio_t audio_t;
|
|
|
|
// If the return type is bool, false means failure.
|
|
|
|
// Initialize audio system
|
|
// nullptr means failure
|
|
audio_t* audio_init(void);
|
|
|
|
// Destroy audio system and free resources
|
|
void audio_destroy(audio_t* audio);
|
|
|
|
// Load MADPCM data from a WAV file.
|
|
// Returns a pointer to the allocated audio data, or nullptr on failure.
|
|
// The returned buffer must be freed with audio_free_data().
|
|
uint8_t* audio_load_madpcm(const char* filename, int* out_size, int* out_channels, int* out_rate, int* out_total_samples);
|
|
|
|
// Free data allocated by audio_load_madpcm
|
|
void audio_free_data(uint8_t* data);
|
|
|
|
// Play a MADPCM stream, returns unique ID
|
|
// data must remain valid until the stream ends or is stopped
|
|
// loop: if true, the stream restarts on EOF
|
|
// 0 means failure, valid IDs start from 1
|
|
uint32_t audio_play(audio_t* audio,
|
|
const uint8_t* data,
|
|
int size,
|
|
int channels,
|
|
int rate,
|
|
bool loop);
|
|
|
|
// Stop and remove stream by ID
|
|
bool audio_stop(audio_t* audio, uint32_t id);
|
|
|
|
bool audio_pause(audio_t* audio, uint32_t id);
|
|
bool audio_resume(audio_t* audio, uint32_t id);
|
|
|
|
// Returns true if the stream is active (playing or paused)
|
|
bool audio_is_active(audio_t* audio, uint32_t id);
|
|
|
|
// Returns true if the stream is currently playing (not paused, not stopped)
|
|
bool audio_is_playing(audio_t* audio, uint32_t id);
|
|
|
|
// Per-stream volume, immediate effect, range [0.0, 1.0]
|
|
bool audio_set_volume(audio_t* audio, uint32_t id, float volume);
|
|
|
|
// Animate per-stream volume linearly over time, driven by audio_tick()
|
|
bool audio_animate_volume(audio_t* audio, uint32_t id,
|
|
float to_volume, float duration_sec);
|
|
|
|
// Global volume, immediate effect, range [0.0, 1.0]
|
|
// Applied on top of per-stream volume at mix time
|
|
void audio_set_global_volume(audio_t* audio, float volume);
|
|
|
|
// Animate global volume linearly over time, driven by audio_tick()
|
|
void audio_animate_global_volume(audio_t* audio,
|
|
float to_volume, float duration_sec);
|
|
|
|
// Advances stream decoding and volume animations
|
|
// Call once per main loop iteration with the same delta as compositor_tick()
|
|
void audio_tick(audio_t* audio, float delta_time_sec);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif // AUDIO_H
|