File indexing completed on 2025-01-19 03:57:06 

0001 /*********************************************************
0002  * Copyright (C) 2020, Val Doroshchuk <valbok@gmail.com> *
0003  *                                                       *
0004  * This file is part of QtAVPlayer.                      *
0005  * Free Qt Media Player based on FFmpeg.                 *
0006  *********************************************************/
0007 
0008 #include "qavsubtitleframe.h"
0009 #include "qavstreamframe_p.h"
0010 #include <QDebug>
0011 
0012 extern "C" {
0013 #include "libavcodec/avcodec.h"
0014 #include "libavformat/avformat.h"
0015 }
0016 
0017 QT_BEGIN_NAMESPACE
0018 
0019 class QAVSubtitleFramePrivate : public QAVStreamFramePrivate
0020 {
0021 public:
0022     QSharedPointer<AVSubtitle> subtitle;
0023 
0024     double pts() const override;
0025     double duration() const override;
0026 };
0027 
0028 static void subtitle_free(AVSubtitle *subtitle)
0029 {
0030     avsubtitle_free(subtitle);
0031 }
0032 
0033 QAVSubtitleFrame::QAVSubtitleFrame()
0034     : QAVStreamFrame(*new QAVSubtitleFramePrivate)
0035 {
0036     Q_D(QAVSubtitleFrame);
0037     d->subtitle.reset(new AVSubtitle, subtitle_free);
0038     memset(d->subtitle.data(), 0, sizeof(*d->subtitle.data()));
0039 }
0040 
0041 QAVSubtitleFrame::~QAVSubtitleFrame()
0042 {
0043 }
0044 
0045 QAVSubtitleFrame::QAVSubtitleFrame(const QAVSubtitleFrame &other)
0046     : QAVSubtitleFrame()
0047 {
0048     operator=(other);
0049 }
0050 
0051 QAVSubtitleFrame &QAVSubtitleFrame::operator=(const QAVSubtitleFrame &other)
0052 {
0053     Q_D(QAVSubtitleFrame);
0054     QAVStreamFrame::operator=(other);
0055     d->subtitle = static_cast<QAVSubtitleFramePrivate *>(other.d_ptr.get())->subtitle;
0056 
0057     return *this;
0058 }
0059 
0060 AVSubtitle *QAVSubtitleFrame::subtitle() const
0061 {
0062     Q_D(const QAVSubtitleFrame);
0063     return d->subtitle.data();
0064 }
0065 
0066 double QAVSubtitleFramePrivate::pts() const
0067 {
0068     if (!subtitle)
0069         return NAN;
0070     AVRational tb;
0071     tb.num = 1;
0072     tb.den = AV_TIME_BASE;
0073     return subtitle->pts == AV_NOPTS_VALUE ? NAN : subtitle->pts * av_q2d(tb);
0074 }
0075 
0076 double QAVSubtitleFramePrivate::duration() const
0077 {
0078     if (!subtitle)
0079         return 0.0;
0080     return (subtitle->end_display_time - subtitle->start_display_time) / 1000.0;
0081 }
0082 
0083 QT_END_NAMESPACE