1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QGSTREAMERPLAYERSESSION_H 41 #define QGSTREAMERPLAYERSESSION_H 42 43 #include <QtMultimedia/private/qtmultimediaglobal_p.h> 44 #include <QObject> 45 #include <QtCore/qmutex.h> 46 #include "qgstreameraudiodecodercontrol.h" 47 #include <private/qgstreamerbushelper_p.h> 48 #include "qaudiodecoder.h" 49 50 #if QT_CONFIG(gstreamer_app) 51 #include <private/qgstappsrc_p.h> 52 #endif 53 54 #include <gst/gst.h> 55 #include <gst/app/gstappsink.h> 56 57 QT_BEGIN_NAMESPACE 58 59 class QGstreamerBusHelper; 60 class QGstreamerMessage; 61 62 class QGstreamerAudioDecoderSession : public QObject, 63 public QGstreamerBusMessageFilter 64 { 65 Q_OBJECT 66 Q_INTERFACES(QGstreamerBusMessageFilter) 67 68 public: 69 QGstreamerAudioDecoderSession(QObject *parent); 70 virtual ~QGstreamerAudioDecoderSession(); 71 bus()72 QGstreamerBusHelper *bus() const { return m_busHelper; } 73 state()74 QAudioDecoder::State state() const { return m_state; } pendingState()75 QAudioDecoder::State pendingState() const { return m_pendingState; } 76 77 bool processBusMessage(const QGstreamerMessage &message) override; 78 79 #if QT_CONFIG(gstreamer_app) appsrc()80 QGstAppSrc *appsrc() const { return m_appSrc; } 81 static void configureAppSrcElement(GObject*, GObject*, GParamSpec*,QGstreamerAudioDecoderSession* _this); 82 #endif 83 84 QString sourceFilename() const; 85 void setSourceFilename(const QString &fileName); 86 87 QIODevice* sourceDevice() const; 88 void setSourceDevice(QIODevice *device); 89 90 void start(); 91 void stop(); 92 93 QAudioFormat audioFormat() const; 94 void setAudioFormat(const QAudioFormat &format); 95 96 QAudioBuffer read(); 97 bool bufferAvailable() const; 98 99 qint64 position() const; 100 qint64 duration() const; 101 102 static GstFlowReturn new_sample(GstAppSink *sink, gpointer user_data); 103 104 signals: 105 void stateChanged(QAudioDecoder::State newState); 106 void formatChanged(const QAudioFormat &format); 107 void sourceChanged(); 108 109 void error(int error, const QString &errorString); 110 111 void bufferReady(); 112 void bufferAvailableChanged(bool available); 113 void finished(); 114 115 void positionChanged(qint64 position); 116 void durationChanged(qint64 duration); 117 118 private slots: 119 void updateDuration(); 120 121 private: 122 void setAudioFlags(bool wantNativeAudio); 123 void addAppSink(); 124 void removeAppSink(); 125 126 void processInvalidMedia(QAudioDecoder::Error errorCode, const QString& errorString); 127 static qint64 getPositionFromBuffer(GstBuffer* buffer); 128 129 QAudioDecoder::State m_state; 130 QAudioDecoder::State m_pendingState; 131 QGstreamerBusHelper *m_busHelper; 132 GstBus *m_bus; 133 GstElement *m_playbin; 134 GstElement *m_outputBin; 135 GstElement *m_audioConvert; 136 GstAppSink *m_appSink; 137 138 #if QT_CONFIG(gstreamer_app) 139 QGstAppSrc *m_appSrc; 140 #endif 141 142 QString mSource; 143 QIODevice *mDevice; // QWeakPointer perhaps 144 QAudioFormat mFormat; 145 146 mutable QMutex m_buffersMutex; 147 int m_buffersAvailable; 148 149 qint64 m_position; 150 qint64 m_duration; 151 152 int m_durationQueries; 153 }; 154 155 QT_END_NAMESPACE 156 157 #endif // QGSTREAMERPLAYERSESSION_H 158