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/*
This file is part of the Opie Project
=. (C) 2003-2005 Michael 'Mickey' Lauer <mickey@Vanille.de>
.=l.
.>+-=
_;:, .> :=|. This program is free software; you can
.> <`_, > . <= redistribute it and/or modify it under
:`=1 )Y*s>-.-- : the terms of the GNU Library General Public
.="- .-=="i, .._ License as published by the Free Software
- . .-<_> .<> Foundation; version 2 of the License.
._= =} :
.%`+i> _;_.
.i_,=:_. -<s. 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
..}^=.= = ; Library General Public License for more
++= -. .` .: details.
: = ...= . :.=-
-. .:....=;==+<; You should have received a copy of the GNU
-_. . . )=. = Library General Public License along with
-- :-=` this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef OSOUNDSYSTEM_H
#define OSOUNDSYSTEM_H
#include <qobject.h>
#include <qdict.h>
#include <qmap.h>
namespace Opie {
namespace MM {
class OAudioInterface;
class OMixerInterface;
class OSoundCard;
/*======================================================================================
* OSoundSystem
*======================================================================================*/
/**
* @brief A container class for the Linux OSS/ALSA audio subsystem
*
* This class provides access to all available audio/midi/sequencer interfaces of your device.
*
* @author Michael 'Mickey' Lauer <mickey@Vanille.de>
*/
class OSoundSystem : public QObject
{
Q_OBJECT
public:
typedef QDict<OSoundCard> CardMap;
typedef QDictIterator<OSoundCard> CardIterator;
public:
/**
* @returns the number of available interfaces
*/
int count() const;
/**
* @returns a pointer to the (one and only) @ref OSystem instance.
*/
static OSoundSystem* instance();
/**
* @returns an iterator usable for iterating through all sound cards.
*/
CardIterator iterator() const;
/**
* @returns a pointer to the @ref OAudioInterface object for the specified @a interface or 0, if not found
* @see OAudioInterface
*/
OSoundCard* card( const QString& interface ) const;
/**
* @internal Rebuild the internal interface database
* @note Sometimes it might be useful to call this from client code,
* e.g. after issuing a cardctl insert
*/
void synchronize();
protected:
OSoundSystem();
private:
static OSoundSystem* _instance;
CardMap _interfaces;
class Private;
Private *d;
};
/*======================================================================================
* OSoundCard
*======================================================================================*/
class OSoundCard : public QObject
{
Q_OBJECT
public:
/**
* Constructor. Normally you don't create @ref OSoundCard objects yourself,
* but access them via @ref OSoundSystem::card().
*/
OSoundCard( QObject* parent, const char* name );
/**
* Destructor.
*/
virtual ~OSoundCard();
bool hasMixer() const { return _audio; };
bool hasAudio() const { return _mixer; };
OAudioInterface* audio() const { return _audio; };
OMixerInterface* mixer() const { return _mixer; };
protected:
OAudioInterface* _audio;
OMixerInterface* _mixer;
private:
void init();
private:
class Private;
Private *d;
};
/*======================================================================================
* OAudioInterface
*======================================================================================*/
class OAudioInterface : public QObject
{
Q_OBJECT
public:
/**
* Constructor. Normally you don't create @ref OAudioInterface objects yourself,
* but access them via the @ref OSoundCard interface.
*/
OAudioInterface( QObject* parent, const char* name );
/**
* Destructor.
*/
virtual ~OAudioInterface();
protected:
const int _sfd;
private:
void init();
private:
class Private;
Private *d;
};
/*======================================================================================
* OMixerInterface
*======================================================================================*/
class OMixerInterface : public QObject
{
Q_OBJECT
public:
typedef QMap<QString,int>::ConstIterator ChannelIterator;
/**
* Constructor. Normally you don't create @ref OMixerInterface objects yourself,
* but access them via the @ref OSoundCard interface.
*/
OMixerInterface( QObject* parent, const char* name );
/**
* Destructor.
*/
virtual ~OMixerInterface();
/**
* @returns all available channels.
*/
QStringList allChannels() const;
/**
* @returns recordable channels.
*/
QStringList recChannels() const;
/**
* @returns playable channels.
*/
QStringList playChannels() const;
/**
* @returns true, if the device features multiple recording sources.
*/
bool hasMultipleRecording() const;
/**
* @returns true, if @a channel exists.
*/
bool hasChannel( const QString& channel ) const;
/**
* @returns true, if @a channel is stereo.
*/
bool isStereo( const QString& channel ) const;
/**
* @returns tru, if @a channel is a possible recording source.
*/
bool isRecordable( const QString& channel ) const;
/**
* Set the @a left and @a right volumes for @a channel.
* If no value for right is given, the value for left is taken for that.
*/
void setVolume( const QString& channel, int left, int right = -1 );
/**
* @returns the volume of @a channel or -1, if the channel doesn't exist.
* @note You might want to use @ref hasChannel() to check if a channel exists.
*/
int volume( const QString& channel ) const;
protected:
int _fd;
int _capmask;
int _devmask;
int _recmask;
int _stmask;
QMap<QString,int> _channels;
private:
void init();
private:
class Private;
Private *d;
};
}
}
#endif // OSOUNDSYSTEM_H
|
