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https://github.com/xiaoyifang/goldendict-ng.git
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111 lines
2.3 KiB
C++
111 lines
2.3 KiB
C++
#ifndef __FFMPEGAUDIO_HH_INCLUDED__
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#define __FFMPEGAUDIO_HH_INCLUDED__
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#ifdef MAKE_FFMPEG_PLAYER
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#include "audiooutput.hh"
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#include <QObject>
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#include <QMutex>
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#include <QByteArray>
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#include <QThread>
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extern "C" {
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#include <libavcodec/avcodec.h>
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#include <libavformat/avformat.h>
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#include <libavutil/avutil.h>
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#include "libswresample/swresample.h"
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}
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#include <QString>
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#include <QDataStream>
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#include <vector>
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#if ( QT_VERSION >= QT_VERSION_CHECK( 6, 2, 0 ) )
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#include <QMediaDevices>
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#include <QAudioDevice>
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#endif
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using std::vector;
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namespace Ffmpeg {
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class DecoderThread;
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class AudioService: public QObject
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{
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Q_OBJECT
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QScopedPointer< DecoderThread > thread;
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public:
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static AudioService & instance();
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void playMemory( const char * ptr, int size );
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void stop();
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signals:
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void cancelPlaying( bool waitUntilFinished );
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void error( QString const & message );
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private:
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AudioService() = default;
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~AudioService();
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};
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struct DecoderContext
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{
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enum {
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kBufferSize = 32768
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};
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static QMutex deviceMutex_;
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QAtomicInt & isCancelled_;
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QByteArray audioData_;
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QDataStream audioDataStream_;
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AVFormatContext * formatContext_;
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#if LIBAVCODEC_VERSION_MAJOR < 59
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AVCodec * codec_;
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#else
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const AVCodec * codec_;
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#endif
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AVCodecContext * codecContext_;
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AVIOContext * avioContext_;
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AVStream * audioStream_;
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AudioOutput * audioOutput;
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bool avformatOpened_;
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SwrContext * swr_;
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DecoderContext( QByteArray const & audioData, QAtomicInt & isCancelled );
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~DecoderContext();
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bool openCodec( QString & errorString );
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void closeCodec();
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bool openOutputDevice( QString & errorString );
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void closeOutputDevice();
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bool play( QString & errorString );
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void stop();
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bool normalizeAudio( AVFrame * frame, vector< uint8_t > & samples );
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void playFrame( AVFrame * frame );
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};
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class DecoderThread: public QThread
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{
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Q_OBJECT
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static QMutex deviceMutex_;
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QAtomicInt isCancelled_;
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QByteArray audioData_;
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DecoderContext d;
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public:
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DecoderThread( QByteArray const & audioData, QObject * parent );
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virtual ~DecoderThread();
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public slots:
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void run();
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void cancel( bool waitUntilFinished );
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signals:
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void error( QString const & message );
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};
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} // namespace Ffmpeg
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#endif // MAKE_FFMPEG_PLAYER
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#endif // __FFMPEGAUDIO_HH_INCLUDED__
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