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// Copyright (c) 2000-2001 Brad Hughes <bhughes@trolltech.com>
//
// Use, modification and distribution is allowed without limitation,
// warranty, or liability of any kind.
//
#ifndef OUTPUT_H
#define OUTPUT_H
class Output;
#include <QObject>
#include <QThread>
#include <QEvent>
#include <QList>
#include <QIODevice>
#include "visual.h"
#include "outputfactory.h"
#include "visualfactory.h"
#include "recycler.h"
class QTimer;
class OutputState
{
public:
enum Type { Playing, Buffering, Info, Paused, Stopped, Volume, Error };
OutputState()
: m_type(Stopped), m_error_msg(0), m_elasped_seconds(0),
m_written_bytes(0), m_brate(0), m_freq(0), m_prec(0), m_chan(0),
m_left(0), m_right(0)
{}
OutputState(const OutputState &st)
: m_type(Stopped), m_error_msg(0), m_elasped_seconds(0),
m_written_bytes(0), m_brate(0), m_freq(0), m_prec(0), m_chan(0),
m_left(0), m_right(0)
{
m_type = st.type();
if (m_type == Info)
{
m_elasped_seconds = st.elapsedSeconds();
m_written_bytes = st.writtenBytes();
m_brate = st.bitrate();
m_freq = st.frequency();
m_prec = st.precision();
m_chan = st.channels();
m_left = st.leftVolume();
m_right = st.rightVolume();
}
else if (m_type == Error)
m_error_msg = new QString(*st.errorMessage());
}
OutputState(Type t)
: m_type(t), m_error_msg(0), m_elasped_seconds(0),
m_written_bytes(0), m_brate(0), m_freq(0), m_prec(0), m_chan(0),
m_left(0), m_right(0)
{}
OutputState(long s, unsigned long w, int b, int f, int p, int c)
: m_type(Info), m_error_msg(0), m_elasped_seconds(s),
m_written_bytes(w), m_brate(b), m_freq(f), m_prec(p), m_chan(c),
m_left(0), m_right(0)
{}
OutputState(int L, int R)
: m_type(Volume), m_error_msg(0), m_elasped_seconds(0),
m_written_bytes(0), m_brate(0), m_freq(0), m_prec(0), m_chan(0),
m_left(L), m_right(R)
{}
OutputState(const QString &e)
: m_type(Error), m_elasped_seconds(0), m_written_bytes(0),
m_brate(0), m_freq(0), m_prec(0), m_chan(0),
m_left(0), m_right(0)
{
m_error_msg = new QString(e);
}
~OutputState()
{
if (m_error_msg)
delete m_error_msg;
}
const QString *errorMessage() const
{
return m_error_msg;
}
const long &elapsedSeconds() const
{
return m_elasped_seconds;
}
const unsigned long &writtenBytes() const
{
return m_written_bytes;
}
const int &bitrate() const
{
return m_brate;
}
const int &frequency() const
{
return m_freq;
}
const int &precision() const
{
return m_prec;
}
const int &channels() const
{
return m_chan;
}
const Type &type() const
{
return m_type;
}
const int leftVolume() const
{
return m_left;
}
const int rightVolume() const
{
return m_right;
}
private:
Type m_type;
QString *m_error_msg;
long m_elasped_seconds;
unsigned long m_written_bytes;
int m_brate, m_freq, m_prec, m_chan;
int m_left, m_right; //volume
};
class Output : public QThread
{
Q_OBJECT
public:
enum VolumeType { Standard, Custom, Disabled };
Output(QObject * parent = 0, VolumeType vt = Standard);
~Output();
Recycler *recycler()
{
return &r;
}
QMutex *mutex()
{
return &mtx;
}
VolumeType volumeControl()
{
return m_vol;
};
//visualization
void addVisual(Visual*);
void removeVisual(Visual*);
void addVisual(VisualFactory *factory, QWidget *parent);
void removeVisual(VisualFactory *factory);
// abstract
virtual bool isInitialized() const = 0;
virtual bool initialize() = 0;
virtual void uninitialize() = 0;
virtual void configure(long, int, int, int) = 0;
virtual void pause() = 0;
virtual void stop() = 0;
virtual long written() = 0;
virtual long latency() = 0;
virtual void seek(long) = 0;
virtual void setVolume(int, int)
{};
static void registerFactory(OutputFactory *);
static Output *create(QObject *);
static QList<OutputFactory*> *outputFactories();
static QStringList outputFiles();
public slots:
virtual void checkVolume()
{};
signals:
void stateChanged(const OutputState&);
protected:
void dispatch(OutputState::Type);
void dispatch(long s, unsigned long w, int b, int f, int p, int c);
void dispatch(const OutputState&);
void dispatchVolume(int L, int R);
void error(const QString &e);
void dispatchVisual(Buffer *, unsigned long, int, int);
void clearVisuals();
private:
QMutex mtx;
Recycler r;
QList<Visual*> visuals; //external visualization
QMap<VisualFactory*, Visual*> m_vis_map; //internal visualization
VolumeType m_vol;
};
#endif // OUTPUT_H
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