QT实现音视频播放器

最新推荐文章于 2025-04-14 09:40:55 发布

调琴

最新推荐文章于 2025-04-14 09:40:55 发布

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本文链接：https://blog.youkuaiyun.com/qq_40179343/article/details/118574268

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不多bibi，直接上代码，播放pcm，亲测有效；

与渲染像素数据结合，就可实现音视频播放器，qt实现渲染rgb或yuv参考：

https://blog.youkuaiyun.com/qq_40179343/article/details/118554221?spm=1001.2014.3001.5501

#ifndef AUDIOPLAYER_H
#define AUDIOPLAYER_H

#include <QIODevice>
#include <QAudioDeviceInfo>
#include <QAudioOutput>
#include <QThread>

class AudioPlayer : public QObject
{
    Q_OBJECT
private:
    QAudioFormat audioFormat;
    QAudioOutput* audioOutput;
    QIODevice* audioIO;

public:
    AudioPlayer();
    ~AudioPlayer();
public slots:
    void slotInitAudioPlayer(int sampleRate,int channels,int sampleSize);
    void slotWriteData(char* data,int len);
};

#endif // AUDIOPLAYER_H

#include "audioplayer.h"

#include <QDebug>

AudioPlayer::AudioPlayer()
{
}

AudioPlayer::~AudioPlayer()
{
}

void AudioPlayer::slotWriteData(char* data,int len)
{
//    qDebug() << "slotWriteData len " << len;
    this->audioIO->write(data,len);
}

void AudioPlayer::slotInitAudioPlayer(int sampleRate,int channels,int sampleSize)
{
//    qDebug() << "slotInitAudioPlayer deviceName " <<QAudioDeviceInfo::defaultOutputDevice().deviceName();
    this->audioFormat.setSampleRate(sampleRate);
    this->audioFormat.setChannelCount(channels);
    this->audioFormat.setSampleSize(sampleSize);
    this->audioFormat.setCodec("audio/pcm");
    this->audioFormat.setByteOrder(QAudioFormat::LittleEndian);
    this->audioFormat.setSampleType(QAudioFormat::SignedInt);//QAudioFormat::SignedInt

    this->audioOutput = new QAudioOutput(this->audioFormat, 0);

    this->audioIO = this->audioOutput->start();
}