strawberry-audio-player-win.../src/engine/gstengine.h

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/***************************************************************************
* Copyright (C) 2017-2018 Jonas Kvinge <jonas@jkvinge.net> *
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* Copyright (C) 2003-2005 by Mark Kretschmann <markey@web.de> *
* Copyright (C) 2005 by Jakub Stachowski <qbast@go2.pl> *
* Copyright (C) 2006 Paul Cifarelli <paul@cifarelli.net> *
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* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Steet, Fifth Floor, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef GSTENGINE_H
#define GSTENGINE_H
#include "config.h"
#include <memory>
#include <stdbool.h>
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#include <gst/gst.h>
#include <QtGlobal>
#include <QObject>
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#include <QFuture>
#include <QByteArray>
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#include <QList>
#include <QVariant>
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#include <QString>
#include <QUrl>
#include <QTimer>
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#include <QTimerEvent>
#include "core/timeconstants.h"
#include "engine_fwd.h"
#include "enginebase.h"
#include "gstbufferconsumer.h"
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class TaskManager;
class GstEnginePipeline;
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#ifdef Q_OS_MACOS
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struct _GTlsDatabase;
typedef struct _GTlsDatabase GTlsDatabase;
#endif
/**
* @class GstEngine
* @short GStreamer engine plugin
* @author Mark Kretschmann <markey@web.de>
*/
class GstEngine : public Engine::Base, public GstBufferConsumer {
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Q_OBJECT
public:
GstEngine(TaskManager *task_manager);
~GstEngine();
bool Init();
Engine::State state() const;
void StartPreloading(const QUrl &url, bool force_stop_at_end, qint64 beginning_nanosec, qint64 end_nanosec);
bool Load(const QUrl &, Engine::TrackChangeFlags change, bool force_stop_at_end, quint64 beginning_nanosec, qint64 end_nanosec);
bool Play(quint64 offset_nanosec);
void Stop(bool stop_after = false);
void Pause();
void Unpause();
void Seek(quint64 offset_nanosec);
protected:
void SetVolumeSW(uint percent);
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public:
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qint64 position_nanosec() const;
qint64 length_nanosec() const;
const Engine::Scope &scope(int chunk_length);
OutputDetailsList GetOutputsList() const;
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bool ValidOutput(const QString &output);
QString DefaultOutput() { return kAutoSink; }
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bool CustomDeviceSupport(const QString &output);
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void EnsureInitialised() { initialising_.waitForFinished(); }
void InitialiseGStreamer();
void SetEnvironment();
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GstElement *CreateElement(const QString &factoryName, GstElement *bin = 0, bool fatal = true, bool showerror = true);
void ConsumeBuffer(GstBuffer *buffer, int pipeline_id);
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public slots:
void ReloadSettings();
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/** Set whether equalizer is enabled */
void SetEqualizerEnabled(bool);
/** Set equalizer preamp and gains, range -100..100. Gains are 10 values. */
void SetEqualizerParameters(int preamp, const QList<int> &bandGains);
/** Set Stereo balance, range -1.0f..1.0f */
void SetStereoBalance(float value);
void AddBufferConsumer(GstBufferConsumer *consumer);
void RemoveBufferConsumer(GstBufferConsumer *consumer);
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#ifdef Q_OS_MACOS
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GTlsDatabase *tls_database() const { return tls_database_; }
#endif
protected:
void timerEvent(QTimerEvent*);
private slots:
void EndOfStreamReached(int pipeline_id, bool has_next_track);
void HandlePipelineError(int pipeline_id, const QString &message, int domain, int error_code);
void NewMetaData(int pipeline_id, const Engine::SimpleMetaBundle &bundle);
void AddBufferToScope(GstBuffer *buf, int pipeline_id);
void FadeoutFinished();
void FadeoutPauseFinished();
void SeekNow();
void PlayDone(QFuture<GstStateChangeReturn> future, const quint64, const int);
void BufferingStarted();
void BufferingProgress(int percent);
void BufferingFinished();
private:
static const char *kAutoSink;
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static const char *kALSASink;
static const char *kOpenALSASink;
static const char *kOSSSink;
static const char *kOSS4Sink;
static const char *kJackAudioSink;
static const char *kPulseSink;
static const char *kA2DPSink;
static const char *kAVDTPSink;
static const char *InterAudiosink;
static const char *kDirectSoundSink;
static const char *kOSXAudioSink;
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PluginDetailsList GetPluginList(const QString &classname) const;
QByteArray FixupUrl(const QUrl &url);
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void StartFadeout();
void StartFadeoutPause();
void StartTimers();
void StopTimers();
std::shared_ptr<GstEnginePipeline> CreatePipeline();
std::shared_ptr<GstEnginePipeline> CreatePipeline(const QUrl &url, qint64 end_nanosec);
std::shared_ptr<GstEnginePipeline> CreatePipeline(const QByteArray &url, qint64 end_nanosec);
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void UpdateScope(int chunk_length);
private:
static const qint64 kTimerIntervalNanosec = 1000 * kNsecPerMsec; // 1s
static const qint64 kPreloadGapNanosec = 3000 * kNsecPerMsec; // 3s
static const qint64 kSeekDelayNanosec = 100 * kNsecPerMsec; // 100msec
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TaskManager *task_manager_;
int buffering_task_id_;
QFuture<void> initialising_;
std::shared_ptr<GstEnginePipeline> current_pipeline_;
std::shared_ptr<GstEnginePipeline> fadeout_pipeline_;
std::shared_ptr<GstEnginePipeline> fadeout_pause_pipeline_;
QUrl preloaded_url_;
QList<GstBufferConsumer*> buffer_consumers_;
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GstBuffer *latest_buffer_;
int equalizer_preamp_;
QList<int> equalizer_gains_;
float stereo_balance_;
mutable bool can_decode_success_;
mutable bool can_decode_last_;
// Hack to stop seeks happening too often
QTimer *seek_timer_;
bool waiting_to_seek_;
quint64 seek_pos_;
int timer_id_;
int next_element_id_;
bool is_fading_out_to_pause_;
bool has_faded_out_;
int scope_chunk_;
bool have_new_buffer_;
int scope_chunks_;
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#ifdef Q_OS_MACOS
GTlsDatabase* tls_database_;
#endif
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};
#endif /* GSTENGINE_H */