196 lines
5.8 KiB
C++
196 lines
5.8 KiB
C++
/***************************************************************************
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* Copyright (C) 2003-2005 by Mark Kretschmann <markey@web.de> *
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* Copyright (C) 2005 by Jakub Stachowski <qbast@go2.pl> *
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* Portions Copyright (C) 2006 Paul Cifarelli <paul@cifarelli.net> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Steet, Fifth Floor, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifndef AMAROK_GSTENGINE_H
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#define AMAROK_GSTENGINE_H
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#include "enginebase.h"
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#include "bufferconsumer.h"
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#include <QHash>
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#include <QList>
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#include <QString>
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#include <QStringList>
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#include <QTimerEvent>
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#include <gst/gst.h>
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#include <boost/shared_ptr.hpp>
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class QTimer;
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class QTimerEvent;
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class GstEnginePipeline;
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/**
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* @class GstEngine
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* @short GStreamer engine plugin
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* @author Mark Kretschmann <markey@web.de>
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*/
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class GstEngine : public Engine::Base, public BufferConsumer {
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Q_OBJECT
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public:
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GstEngine();
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~GstEngine();
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struct PluginDetails {
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QString name;
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QString long_name;
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QString author;
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QString description;
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};
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typedef QList<PluginDetails> PluginDetailsList;
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static const char* kSettingsGroup;
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static const char* kAutoSink;
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bool Init();
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bool CanDecode(const QUrl& url);
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int AddBackgroundStream(const QUrl& url);
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void StopBackgroundStream(int id);
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int AllGloryToTheHypnotoad();
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uint position() const;
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uint length() const;
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Engine::State state() const;
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const Engine::Scope& scope();
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PluginDetailsList GetOutputsList() const { return GetPluginList( "Sink/Audio" ); }
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static bool DoesThisSinkSupportChangingTheOutputDeviceToAUserEditableString(const QString& name);
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GstElement* CreateElement(const QString& factoryName, GstElement* bin = 0);
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// BufferConsumer
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void ConsumeBuffer(GstBuffer *buffer, GstEnginePipeline* pipeline);
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public slots:
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void StartPreloading(const QUrl &);
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bool Load(const QUrl&, Engine::TrackChangeType change);
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bool Play(uint offset);
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void Stop();
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void Pause();
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void Unpause();
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void Seek(uint ms);
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/** Set whether equalizer is enabled */
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void SetEqualizerEnabled(bool);
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/** Set equalizer preamp and gains, range -100..100. Gains are 10 values. */
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void SetEqualizerParameters(int preamp, const QList<int>& bandGains);
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void ReloadSettings();
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void AddBufferConsumer(BufferConsumer* consumer);
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void RemoveBufferConsumer(BufferConsumer* consumer);
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void SetSpectrum(bool enable);
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protected:
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void SetVolumeSW(uint percent);
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void timerEvent(QTimerEvent*);
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private slots:
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void EndOfStreamReached(bool has_next_track);
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void HandlePipelineError(const QString& message);
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void NewMetaData(const Engine::SimpleMetaBundle& bundle);
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void ClearScopeBuffers();
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void AddBufferToScope(GstBuffer* buf, GstEnginePipeline* pipeline);
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void FadeoutFinished();
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void SeekNow();
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void BackgroundStreamFinished();
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void PlayDone();
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private:
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// Callbacks
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static void CanDecodeNewPadCallback(GstElement*, GstPad*, gboolean, gpointer);
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static void CanDecodeLastCallback(GstElement*, gpointer);
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static GstBusSyncReply CanDecodeBusCallbackSync(GstBus*, GstMessage*, gpointer);
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static gboolean CanDecodeBusCallback(GstBus*, GstMessage*, gpointer);
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static void PrintGstError(GstMessage* msg);
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static void SetEnv(const char* key, const QString& value);
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PluginDetailsList GetPluginList(const QString& classname) const;
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void StartFadeout();
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void StartTimers();
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void StopTimers();
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boost::shared_ptr<GstEnginePipeline> CreatePipeline();
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boost::shared_ptr<GstEnginePipeline> CreatePipeline(const QUrl& url);
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void UpdateScope();
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qint64 PruneScope();
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int AddBackgroundStream(boost::shared_ptr<GstEnginePipeline> pipeline);
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private:
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static const int kTimerInterval = 1000; // msec
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static const int kPreloadGap = 1000; // msec
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static const int kSeekDelay = 100; // msec
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static const char* kHypnotoadPipeline;
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QString sink_;
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QString device_;
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boost::shared_ptr<GstEnginePipeline> current_pipeline_;
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boost::shared_ptr<GstEnginePipeline> fadeout_pipeline_;
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boost::shared_ptr<GstEnginePipeline> preload_pipeline_;
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QUrl preloaded_url_;
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QList<BufferConsumer*> buffer_consumers_;
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GQueue* delayq_;
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float current_scope_[kScopeSize];
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int current_sample_;
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bool equalizer_enabled_;
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int equalizer_preamp_;
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QList<int> equalizer_gains_;
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bool rg_enabled_;
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int rg_mode_;
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float rg_preamp_;
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bool rg_compression_;
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mutable bool can_decode_success_;
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mutable bool can_decode_last_;
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// Hack to stop seeks happening too often
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QTimer* seek_timer_;
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bool waiting_to_seek_;
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uint seek_pos_;
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int timer_id_;
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int next_element_id_;
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QHash<int, boost::shared_ptr<GstEnginePipeline> > background_streams_;
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bool spectrum_enabled_;
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};
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#endif /*AMAROK_GSTENGINE_H*/
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