File indexing completed on 2025-02-23 04:35:41

 /*
     SPDX-FileCopyrightText: 2010-2022 Mladen Milinkovic <max@smoothware.net>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #ifndef WAVEBUFFER_H
 #define WAVEBUFFER_H
 
 #include "streamprocessor/streamprocessor.h"
 
 #include <QObject>
 
 // FIXME: make sample size configurable or drop this
 //*
 #define SAMPLE_TYPE qint16
 #define SAMPLE_MIN -32768
 #define SAMPLE_MAX 32767
 /*/
 #define SAMPLE_TYPE quint8
 #define SAMPLE_MIN 0
 #define SAMPLE_MAX 255
 //*/
 
 namespace SubtitleComposer {
 class WaveformWidget;
 class ZoomBuffer;
 
 struct WaveZoomData {
     quint32 min;
     quint32 max;
 };
 
 class WaveBuffer : public QObject
 {
     Q_OBJECT
 
 public:
     explicit WaveBuffer(WaveformWidget *parent = nullptr);
 
     /**
      * @brief waveformDuration
      * @return seconds FIXME: make it milliseconds
      */
     inline quint32 waveformDuration() const { return m_waveformDuration; }
 
     inline quint32 lengthMillis() const { return m_waveformChannelSize * 1000 / m_samplesSec; }
     inline quint32 lengthSamples() const { return m_waveformChannelSize; }
 
     /**
      * @brief sampleRateMillis
      * @return number of samples per second
      */
     inline quint32 sampleRate() const { return m_samplesSec; }
 
     quint32 millisPerPixel() const;
 
     inline quint16 channels() const { return m_waveformChannels; }
 
     inline bool isDecoding() const { return m_wfFrame != nullptr; }
 
     /**
      * @brief MAX_WINDOW_ZOOM
      * @return FIXME:
      */
     inline static quint32 MAX_WINDOW_ZOOM() { return 3000; }
 
     quint32 samplesAvailable() const;
 
     void setAudioStream(const QString &mediaFile, int audioStream);
     void setNullAudioStream(quint64 msecVideoLength);
     void clearAudioStream();
 
     inline ZoomBuffer * zoomBuffer() const { return m_zoomBuffer; }
 
 signals:
     void waveformUpdated();
 
 private:
     void onStreamData(const void *buffer, qint32 size, const WaveFormat *waveFormat, const qint64 msecStart, const qint64 msecDuration);
     void onStreamProgress(quint64 msecPos, quint64 msecLength);
     void onStreamFinished();
 
 private:
     WaveformWidget *m_wfWidget;
 
     StreamProcessor *m_stream;
 
     quint32 m_waveformDuration; // FIXME: change to msec
     quint16 m_waveformChannels;
     quint32 m_waveformChannelSize;
     SAMPLE_TYPE **m_waveform;
 
     quint32 m_samplesSec;
 
     struct WaveformFrame *m_wfFrame;
 
     ZoomBuffer *m_zoomBuffer;
 };
 }
 
 #endif // WAVEBUFFER_H