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/**
* @file audioengine_fmod.h
* @brief Definition of LLAudioEngine class abstracting the audio
* support as a FMOD 3D implementation
*
* $LicenseInfo:firstyear=2002&license=viewergpl$
*
* Copyright (c) 2002-2008, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef LL_AUDIOENGINE_FMOD_H
#define LL_AUDIOENGINE_FMOD_H
#include "audioengine.h"
#include "listener_fmod.h"
#include "windgen.h"
#include "fmod.h"
class LLAudioStreamFMOD;
class LLAudioEngine_FMOD : public LLAudioEngine
{
public:
LLAudioEngine_FMOD();
virtual ~LLAudioEngine_FMOD();
// initialization/startup/shutdown
virtual bool init(const S32 num_channels, void *user_data);
virtual void allocateListener();
virtual void shutdown();
// Internet stream methods
virtual void initInternetStream();
virtual void startInternetStream(const std::string& url);
virtual void updateInternetStream();
virtual void stopInternetStream();
virtual void pauseInternetStream(int pause);
virtual int isInternetStreamPlaying();
virtual void setInternetStreamGain(F32 vol);
/*virtual*/ void initWind();
/*virtual*/ void cleanupWind();
/*virtual*/void updateWind(LLVector3 direction, F32 camera_height_above_water);
#if LL_DARWIN
typedef S32 MIXBUFFERFORMAT;
#else
typedef S16 MIXBUFFERFORMAT;
#endif
protected:
/*virtual*/ LLAudioBuffer *createBuffer(); // Get a free buffer, or flush an existing one if you have to.
/*virtual*/ LLAudioChannel *createChannel(); // Create a new audio channel.
/*virtual*/ void setInternalGain(F32 gain);
protected:
static signed char F_CALLBACKAPI callbackMetaData(char* name, char* value, void* userdata);
LLAudioStreamFMOD *mCurrentInternetStreamp;
int mInternetStreamChannel;
std::list<LLAudioStreamFMOD *> mDeadStreams;
//F32 mMinDistance[MAX_BUFFERS];
//F32 mMaxDistance[MAX_BUFFERS];
S32 mFadeIn;
bool mInited;
// On Windows, userdata is the HWND of the application window.
void* mUserData;
LLWindGen<MIXBUFFERFORMAT> *mWindGen;
};
class LLAudioChannelFMOD : public LLAudioChannel
{
public:
LLAudioChannelFMOD();
virtual ~LLAudioChannelFMOD();
protected:
/*virtual*/ void play();
/*virtual*/ void playSynced(LLAudioChannel *channelp);
/*virtual*/ void cleanup();
/*virtual*/ bool isPlaying();
/*virtual*/ bool updateBuffer();
/*virtual*/ void update3DPosition();
/*virtual*/ void updateLoop();
protected:
int mChannelID;
S32 mLastSamplePos;
};
class LLAudioBufferFMOD : public LLAudioBuffer
{
public:
LLAudioBufferFMOD();
virtual ~LLAudioBufferFMOD();
/*virtual*/ bool loadWAV(const std::string& filename);
/*virtual*/ U32 getLength();
friend class LLAudioChannelFMOD;
void set3DMode(bool use3d);
protected:
FSOUND_SAMPLE *getSample() { return mSamplep; }
protected:
FSOUND_SAMPLE *mSamplep;
};
class LLAudioStreamFMOD
{
public:
LLAudioStreamFMOD(const std::string& url);
int startStream();
bool stopStream(); // Returns true if the stream was successfully stopped.
bool ready();
const std::string& getURL() { return mInternetStreamURL; }
int getOpenState();
protected:
FSOUND_STREAM* mInternetStream;
bool mReady;
std::string mInternetStreamURL;
};
#endif // LL_AUDIOENGINE_FMOD_H
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