video-pc/AvPlayer/AudioPlayer.h

#pragma once

extern "C" {
#include <libavutil/channel_layout.h>
#include <libavutil/frame.h>
#include <libavutil/samplefmt.h>
#include <libswresample/swresample.h>
}

struct sonicStreamStruct;

#include <QAudioOutput>
#include <QAudioDeviceInfo>
#include <QIODevice>
#include <QMutex>

class AudioPlayer {
public:
    AudioPlayer();
    ~AudioPlayer();

    // 初始化音频输出，准备播放
    bool open(const AVFrame* frame, float speed = 1.0f);
    // 播放一帧音频数据
    bool play(const AVFrame* frame, float speed = 1.0f);
    // 设置播放速度
    void setSpeed(float speed);
    // 设置音量（0.0~1.0）
    void setVolume(float volume);
    // 切换音频输出设备
    bool setOutputDevice(const QAudioDeviceInfo& deviceInfo);
    // 停止播放
    void stop();
    // 释放所有资源
    void reset();

    // 获取当前输出设备
    QIODevice* getOutputDevice() const;
    QAudioOutput* getAudioOutput() const;
    float getSpeed() const;
    float getVolume() const;

private:
    void freeBuffers();
    bool initAudioOutput(const AVFrame* frame, float speed);
    bool ensureResampler(const AVFrame* frame);
    bool ensureSonic(int sampleRate, int channels);
    void releaseResampler();
    void releaseSonic();
    void releaseAudioOutput();

    int m_sampleRate = 0;
    int m_channels = 0;
    AVSampleFormat m_format = AV_SAMPLE_FMT_NONE;
    SwrContext* m_swrCtx = nullptr;
    uint8_t* m_swrBuffer = nullptr;
    int m_swrBufferSize = 0;
    sonicStreamStruct* m_sonicCtx = nullptr;
    QAudioOutput* m_audioOutput = nullptr;
    QIODevice* m_audioDevice = nullptr;
    QAudioDeviceInfo m_deviceInfo;
    float m_speed = 1.0f;
    float m_volume = 1.0f;
    uint8_t* m_abufOut = nullptr;
    unsigned int m_abufOutSize = 0;
    QMutex m_mutex;
};