lity3d/Engine/Audio/audio.h

#pragma once

// ============================================================================
// audio.h - 音频系统 (XAudio2)
// ============================================================================

#include <xaudio2.h>
#include <stdint.h>

// 播放状态
typedef enum {
    AUDIO_STOPPED = 0,
    AUDIO_PLAYING,
    AUDIO_PAUSED
} AudioState;

struct AudioSystem;

// 音频源
typedef struct {
    struct AudioSystem* system;
    IXAudio2SourceVoice* source;
    IXAudio2Voice* mastering;
    float volume;
    float pitch;
    int loop;
    AudioState state;
    uint8_t* audio_data;
    uint32_t audio_size;
} AudioSource;

// 音频管理器
typedef struct AudioSystem {
    IXAudio2* xaudio2;
    IXAudio2MasteringVoice* mastering_voice;
} AudioSystem;

// 初始化/销毁
AudioSystem* audio_create(void);
void audio_destroy(AudioSystem* audio);

// 音频源
AudioSource* audio_source_create(AudioSystem* audio);
void audio_source_destroy(AudioSource* source);

// 播放
void audio_source_play(AudioSource* source);
void audio_source_stop(AudioSource* source);
void audio_source_pause(AudioSource* source);
void audio_source_resume(AudioSource* source);

// 音量/音调
void audio_source_set_volume(AudioSource* source, float volume);
void audio_source_set_pitch(AudioSource* source, float pitch);
void audio_source_set_loop(AudioSource* source, int loop);

// WAV加载
int audio_load_wav(AudioSource* source, const char* path);
int audio_load_wav_memory(AudioSource* source, const uint8_t* data, uint32_t size);

// 主音量
void audio_set_master_volume(AudioSystem* audio, float volume);