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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* Copyright 2009-2011 Jörg Hermann Müller
*
* This file is part of AudaSpace.
*
* Audaspace 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.
*
* AudaSpace 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 Audaspace; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file audaspace/OpenAL/AUD_OpenALDevice.h
* \ingroup audopenal
*/
#ifndef __AUD_OPENALDEVICE_H__
#define __AUD_OPENALDEVICE_H__
#include "AUD_IDevice.h"
#include "AUD_IHandle.h"
#include "AUD_I3DDevice.h"
#include "AUD_I3DHandle.h"
#include "AUD_Buffer.h"
//struct AUD_OpenALBufferedFactory;
#include <al.h>
#include <alc.h>
#include <list>
#include <pthread.h>
/**
* This device plays through OpenAL.
*/
class AUD_OpenALDevice : public AUD_IDevice, public AUD_I3DDevice
{
private:
/// Saves the data for playback.
class AUD_OpenALHandle : public AUD_IHandle, public AUD_I3DHandle
{
public:
static const int CYCLE_BUFFERS = 3;
/// Whether it's a buffered or a streamed source.
bool m_isBuffered;
/// The reader source.
boost::shared_ptr<AUD_IReader> m_reader;
/// Whether to keep the source if end of it is reached.
bool m_keep;
/// OpenAL sample format.
ALenum m_format;
/// OpenAL source.
ALuint m_source;
/// OpenAL buffers.
ALuint m_buffers[CYCLE_BUFFERS];
/// The first buffer to be read next.
int m_current;
/// Whether the stream doesn't return any more data.
bool m_eos;
/// The loop count of the source.
int m_loopcount;
/// The stop callback.
stopCallback m_stop;
/// Stop callback data.
void* m_stop_data;
/// Orientation.
AUD_Quaternion m_orientation;
/// Current status of the handle
AUD_Status m_status;
/// Own device.
AUD_OpenALDevice* m_device;
bool pause(bool keep);
public:
/**
* Creates a new OpenAL handle.
* \param device The OpenAL device the handle belongs to.
* \param format The AL format.
* \param reader The reader this handle plays.
* \param keep Whether to keep the handle alive when the reader ends.
*/
AUD_OpenALHandle(AUD_OpenALDevice* device, ALenum format, boost::shared_ptr<AUD_IReader> reader, bool keep);
virtual ~AUD_OpenALHandle() {}
virtual bool pause();
virtual bool resume();
virtual bool stop();
virtual bool getKeep();
virtual bool setKeep(bool keep);
virtual bool seek(float position);
virtual float getPosition();
virtual AUD_Status getStatus();
virtual float getVolume();
virtual bool setVolume(float volume);
virtual float getPitch();
virtual bool setPitch(float pitch);
virtual int getLoopCount();
virtual bool setLoopCount(int count);
virtual bool setStopCallback(stopCallback callback = 0, void* data = 0);
virtual AUD_Vector3 getSourceLocation();
virtual bool setSourceLocation(const AUD_Vector3& location);
virtual AUD_Vector3 getSourceVelocity();
virtual bool setSourceVelocity(const AUD_Vector3& velocity);
virtual AUD_Quaternion getSourceOrientation();
virtual bool setSourceOrientation(const AUD_Quaternion& orientation);
virtual bool isRelative();
virtual bool setRelative(bool relative);
virtual float getVolumeMaximum();
virtual bool setVolumeMaximum(float volume);
virtual float getVolumeMinimum();
virtual bool setVolumeMinimum(float volume);
virtual float getDistanceMaximum();
virtual bool setDistanceMaximum(float distance);
virtual float getDistanceReference();
virtual bool setDistanceReference(float distance);
virtual float getAttenuation();
virtual bool setAttenuation(float factor);
virtual float getConeAngleOuter();
virtual bool setConeAngleOuter(float angle);
virtual float getConeAngleInner();
virtual bool setConeAngleInner(float angle);
virtual float getConeVolumeOuter();
virtual bool setConeVolumeOuter(float volume);
};
typedef std::list<boost::shared_ptr<AUD_OpenALHandle> >::iterator AUD_HandleIterator;
/**
* The OpenAL device handle.
*/
ALCdevice* m_device;
/**
* The OpenAL context.
*/
ALCcontext* m_context;
/**
* The specification of the device.
*/
AUD_DeviceSpecs m_specs;
/**
* Whether the device has the AL_EXT_MCFORMATS extension.
*/
bool m_useMC;
/**
* The list of sounds that are currently playing.
*/
std::list<boost::shared_ptr<AUD_OpenALHandle> > m_playingSounds;
/**
* The list of sounds that are currently paused.
*/
std::list<boost::shared_ptr<AUD_OpenALHandle> > m_pausedSounds;
/**
* The list of buffered factories.
*/
//std::list<AUD_OpenALBufferedFactory*>* m_bufferedFactories;
/**
* The mutex for locking.
*/
pthread_mutex_t m_mutex;
/**
* The streaming thread.
*/
pthread_t m_thread;
/**
* The condition for streaming thread wakeup.
*/
bool m_playing;
/**
* Buffer size.
*/
int m_buffersize;
/**
* Device buffer.
*/
AUD_Buffer m_buffer;
/**
* Orientation.
*/
AUD_Quaternion m_orientation;
/**
* Starts the streaming thread.
* \param Whether the previous thread should be joined.
*/
void start(bool join = true);
/**
* Gets the format according to the specs.
* \param format The variable to put the format into.
* \param specs The specs to read the channel count from.
* \return Whether the format is valid or not.
*/
bool getFormat(ALenum &format, AUD_Specs specs);
// hide copy constructor and operator=
AUD_OpenALDevice(const AUD_OpenALDevice&);
AUD_OpenALDevice& operator=(const AUD_OpenALDevice&);
public:
/**
* Opens the OpenAL audio device for playback.
* \param specs The wanted audio specification.
* \param buffersize The size of the internal buffer.
* \note The specification really used for opening the device may differ.
* \note The buffersize will be multiplicated by three for this device.
* \exception AUD_Exception Thrown if the audio device cannot be opened.
*/
AUD_OpenALDevice(AUD_DeviceSpecs specs,
int buffersize = AUD_DEFAULT_BUFFER_SIZE);
/**
* Streaming thread main function.
*/
void updateStreams();
virtual ~AUD_OpenALDevice();
virtual AUD_DeviceSpecs getSpecs() const;
virtual boost::shared_ptr<AUD_IHandle> play(boost::shared_ptr<AUD_IReader> reader, bool keep = false);
virtual boost::shared_ptr<AUD_IHandle> play(boost::shared_ptr<AUD_IFactory> factory, bool keep = false);
virtual void stopAll();
virtual void lock();
virtual void unlock();
virtual float getVolume() const;
virtual void setVolume(float volume);
virtual AUD_Vector3 getListenerLocation() const;
virtual void setListenerLocation(const AUD_Vector3& location);
virtual AUD_Vector3 getListenerVelocity() const;
virtual void setListenerVelocity(const AUD_Vector3& velocity);
virtual AUD_Quaternion getListenerOrientation() const;
virtual void setListenerOrientation(const AUD_Quaternion& orientation);
virtual float getSpeedOfSound() const;
virtual void setSpeedOfSound(float speed);
virtual float getDopplerFactor() const;
virtual void setDopplerFactor(float factor);
virtual AUD_DistanceModel getDistanceModel() const;
virtual void setDistanceModel(AUD_DistanceModel model);
};
#endif //__AUD_OPENALDEVICE_H__
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