File indexing completed on 2024-06-16 04:38:28

 /*
     SPDX-FileCopyrightText: 2003 Fabrice Bellard
     SPDX-FileCopyrightText: 2020-2022 Mladen Milinkovic <max@smoothware.net>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #ifndef AUDIODECODER_H
 #define AUDIODECODER_H
 
 #include "videoplayer/backend/decoder.h"
 #include <AL/alc.h>
 
 
 struct SwrContext;
 
 namespace SubtitleComposer {
 class VideoState;
 struct Frame;
 
 class AudioDecoder : public Decoder
 {
     Q_OBJECT
 
 public:
     AudioDecoder(VideoState *state, QObject *parent = nullptr);
 
     void destroy() override;
     void abort() override;
 
     void setListenerGain(double gain);
     double pitch() const;
     void setPitch(double pitch);
 
 private:
     void run() override;
 
     struct Params {
         int freq;
         int channels;
         uint64_t channelLayout;
         AVSampleFormat fmt;
         int frameSize;
         int bytesPerSec;
     };
 
     int decodeFrame(Frame *af);
     int getFrame(AVFrame *frame);
     void queueFrame(Frame *af);
     void queueBuffer(uint8_t *data, int len);
     int syncAudio(int nbSamples);
 
     bool open(int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate);
     void close();
     void flush();
     void play();
     void pause();
 
     VideoState *m_vs;
 
     Params m_fmtSrc;
     Params m_fmtTgt;
     SwrContext *m_swrCtx;
     int m_hwBufQueueSize; // in bytes
     uint8_t *m_audioBuf;
     unsigned int m_bufSize; // in bytes
     uint8_t *m_audioBuf1;
     unsigned int m_buf1Size;
 
     double m_diffCum; /* used for AV difference average computation */
     double m_diffAvgCoef;
     int m_diffAvgCount;
 
     ALCdevice *m_alDev;
     ALCcontext *m_alCtx;
     unsigned int m_alSrc;
     int m_bufCnt;
     int m_bufFmt;
 
     friend class StreamDemuxer;
 };
 }
 
 #endif // AUDIODECODER_H