Class that handle the OpenAL audio. More...

#include <AnnAudioEngine.hpp>

Inheritance diagram for Annwvyn::AnnAudioEngine:

Collaboration diagram for Annwvyn::AnnAudioEngine:

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Public Member Functions
	AnnAudioEngine ()
	class constructor More...

	~AnnAudioEngine ()
	class destructor More...

bool	initOpenAL ()
	init OpenAL More...

void	shutdownOpenAL ()
	shutdown and cleanup OpenAL More...

ALuint	loadBuffer (const std::string &filename)

void	preLoadBuffer (const std::string &filename)

ALuint	isBufferLoader (const std::string &filename)
	Return "false" if buffer not loaded. Return buffer index if buffer is loaded. More...

void	unloadBuffer (const std::string &filename)

void	playBGM (const std::string &filename, float volume=0.5f)

void	stopBGM () const
	stop the current background music from playing More...

std::string	getLastError () const
	Get the last error message that occurred in-engine. More...

AnnAudioSourcePtr	createSource ()
	Create an audio source. More...

AnnAudioSourcePtr	createSource (std::string name)
	Create an audio source and attach (and load if necessary) buffer from audio file. More...

void	removeSource (AnnAudioSourcePtr source)
	Remove an audio source frop the engine. More...

void	logError () const
	Write last error text to the log. More...

Public Member Functions inherited from Annwvyn::AnnSubSystem
	AnnSubSystem (const std::string &systemName)
	Construct a SubSystem. More...

virtual	~AnnSubSystem ()
	Destruct a SubSystem. More...

Private Member Functions
void	updateListenerPos (AnnVect3 pos)

void	update () override
	Update the subsystem : set the listener position. More...

void	detectPlaybackDevices (const char *list)
	Detect playback devices from the device enumeration string. More...

Static Private Member Functions
static void	updateListenerOrient (AnnQuaternion orient)

Private Attributes
std::string	lastError
	The last error this class has generated. More...

ALCdevice *	alDevice
	AL alDevice. More...

ALCcontext *	alContext
	AL Context. More...

ALuint	bgmBuffer
	Audio buffer for background music. More...

ALuint	bgmSource
	Audio source for background music. More...

std::unordered_map< std::string, ALuint >	buffers
	Map between audio filenames and OpenAL buffer. More...

bool	locked
	Prevent some operation if set to true. More...

std::list< AnnAudioSourcePtr >	audioSources
	List of the audio sources object present in the audio engine. More...

std::vector< std::string >	detectedDevices
	List of audio device names. More...

AnnAudioFileManager *	audioFileManager
	Custom Ogre resource manager that loads binary files used to load audio files. More...

Friends
class	AnnEngine
	For engine : update listener Orientation. More...

Additional Inherited Members
Protected Member Functions inherited from Annwvyn::AnnSubSystem
virtual bool	needUpdate ()
	To be called by AnnEngine : Return if the subsystem wants to be updated. More...

Protected Attributes inherited from Annwvyn::AnnSubSystem
std::string	name
	Name of the subsystem. More...

Detailed Description

Class that handle the OpenAL audio.

Definition at line 82 of file AnnAudioEngine.hpp.

Constructor & Destructor Documentation

◆ AnnAudioEngine()

AnnAudioEngine::AnnAudioEngine ( )

class constructor

Definition at line 11 of file AnnAudioEngine.cpp.

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◆ ~AnnAudioEngine()

AnnAudioEngine::~AnnAudioEngine ( )

class destructor

Definition at line 48 of file AnnAudioEngine.cpp.

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Member Function Documentation

◆ createSource() [1/2]

std::shared_ptr< AnnAudioSource > AnnAudioEngine::createSource ( )

Create an audio source.

Definition at line 371 of file AnnAudioEngine.cpp.

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◆ createSource() [2/2]

std::shared_ptr< AnnAudioSource > AnnAudioEngine::createSource ( std::string name )

Create an audio source and attach (and load if necessary) buffer from audio file.

Definition at line 359 of file AnnAudioEngine.cpp.

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◆ detectPlaybackDevices()

void AnnAudioEngine::detectPlaybackDevices ( const char * list )

private

Detect playback devices from the device enumeration string.

Definition at line 56 of file AnnAudioEngine.cpp.

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◆ getLastError()

std::string AnnAudioEngine::getLastError ( ) const

Get the last error message that occurred in-engine.

Definition at line 354 of file AnnAudioEngine.cpp.

◆ initOpenAL()

bool AnnAudioEngine::initOpenAL ( )

init OpenAL

Definition at line 78 of file AnnAudioEngine.cpp.

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◆ isBufferLoader()

ALuint AnnAudioEngine::isBufferLoader ( const std::string & filename )

Return "false" if buffer not loaded. Return buffer index if buffer is loaded.

Definition at line 175 of file AnnAudioEngine.cpp.

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◆ loadBuffer()

ALuint AnnAudioEngine::loadBuffer ( const std::string & filename )

Load a sound file. return a sound buffer. Add the buffer to the buffer list. This permit to pre-load sound files to the engine. If want to avoid loading a Bunch of sound file (that causes disk I/O access) you can just load the sound file before the start of your gameplay sequence.

Parameters

filename Name of the file you want to load

Definition at line 183 of file AnnAudioEngine.cpp.

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◆ logError()

void AnnAudioEngine::logError ( ) const

Write last error text to the log.

Definition at line 43 of file AnnAudioEngine.cpp.

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◆ playBGM()

void AnnAudioEngine::playBGM	(	const std::string &	filename,
		float	volume = `0.5f`
	)

play background music. you can specify the volume of the music (0.0f to 1.0f)

Parameters

filename	name of the audio file to use as background music
volume	Float number between 0 and 1, Loudness of the sound. At 0.5f by default

Definition at line 303 of file AnnAudioEngine.cpp.

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◆ preLoadBuffer()

void AnnAudioEngine::preLoadBuffer ( const std::string & filename )

This method is intended to be used in moments like loading levels If a buffer is already loaded, getting it with loadBuffer is equivalent at getting something from an unordered map. If loadBuffer is called with a "new" sound file, the engine will load it in memory before doing anything else, delaying stuff because of disk I/O Load a sound file. return a sound buffer. Add the buffer to the buffer list. This permit to pre-load sound files to the engine. If want to avoid loading a Bunch of sound file (that causes disk I/O access) you can just load the sound file before the start of your gameplay sequence.

Parameters

filename Name of the file you want to load

Definition at line 170 of file AnnAudioEngine.cpp.

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◆ removeSource()

void AnnAudioEngine::removeSource ( AnnAudioSourcePtr source )

Remove an audio source frop the engine.

Definition at line 366 of file AnnAudioEngine.cpp.

◆ shutdownOpenAL()

void AnnAudioEngine::shutdownOpenAL ( )

shutdown and cleanup OpenAL

Definition at line 144 of file AnnAudioEngine.cpp.

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◆ stopBGM()

void AnnAudioEngine::stopBGM ( ) const

stop the current background music from playing

Definition at line 319 of file AnnAudioEngine.cpp.

◆ unloadBuffer()

void AnnAudioEngine::unloadBuffer ( const std::string & filename )

Unload a buffer from the engine. The buffer is identified by the sound file it represent

Parameters

filename Path of the file you want to load

Definition at line 279 of file AnnAudioEngine.cpp.

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◆ update()

void AnnAudioEngine::update ( )

overrideprivatevirtual

Update the subsystem : set the listener position.

Reimplemented from Annwvyn::AnnSubSystem.

Definition at line 347 of file AnnAudioEngine.cpp.

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◆ updateListenerOrient()

void AnnAudioEngine::updateListenerOrient ( AnnQuaternion orient )

staticprivate

For the engine : update the listener orientation to match the player's head

Parameters

orient The orientation of the player

Definition at line 337 of file AnnAudioEngine.cpp.

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◆ updateListenerPos()

void AnnAudioEngine::updateListenerPos ( AnnVect3 pos )

private

For the engine: update the listener position to match the player's head

Parameters

pos	The position of the player

Definition at line 325 of file AnnAudioEngine.cpp.

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Friends And Related Function Documentation

◆ AnnEngine

friend class AnnEngine

friend

For engine : update listener Orientation.

Definition at line 152 of file AnnAudioEngine.hpp.

Member Data Documentation

◆ alContext

ALCcontext* Annwvyn::AnnAudioEngine::alContext

private

AL Context.

Definition at line 165 of file AnnAudioEngine.hpp.

◆ alDevice

ALCdevice* Annwvyn::AnnAudioEngine::alDevice

private

AL alDevice.

Definition at line 163 of file AnnAudioEngine.hpp.

◆ audioFileManager

AnnAudioFileManager* Annwvyn::AnnAudioEngine::audioFileManager

private

Custom Ogre resource manager that loads binary files used to load audio files.

Definition at line 183 of file AnnAudioEngine.hpp.

◆ audioSources

std::list<AnnAudioSourcePtr> Annwvyn::AnnAudioEngine::audioSources

private

List of the audio sources object present in the audio engine.

Definition at line 178 of file AnnAudioEngine.hpp.

◆ bgmBuffer

ALuint Annwvyn::AnnAudioEngine::bgmBuffer

private

Audio buffer for background music.

Definition at line 168 of file AnnAudioEngine.hpp.

◆ bgmSource

ALuint Annwvyn::AnnAudioEngine::bgmSource

private

Audio source for background music.

Definition at line 170 of file AnnAudioEngine.hpp.

◆ buffers

std::unordered_map<std::string, ALuint> Annwvyn::AnnAudioEngine::buffers

private

Map between audio filenames and OpenAL buffer.

Definition at line 173 of file AnnAudioEngine.hpp.

◆ detectedDevices

std::vector<std::string> Annwvyn::AnnAudioEngine::detectedDevices

private

List of audio device names.

Definition at line 181 of file AnnAudioEngine.hpp.

◆ lastError

std::string Annwvyn::AnnAudioEngine::lastError

private

The last error this class has generated.

Definition at line 161 of file AnnAudioEngine.hpp.

◆ locked

bool Annwvyn::AnnAudioEngine::locked

private

Prevent some operation if set to true.

Definition at line 176 of file AnnAudioEngine.hpp.

The documentation for this class was generated from the following files:

Annwvyn/include/AnnAudioEngine.hpp
Annwvyn/src/AnnAudioEngine.cpp

Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ AnnAudioEngine()

◆ ~AnnAudioEngine()

Member Function Documentation

◆ createSource() [1/2]

◆ createSource() [2/2]

◆ detectPlaybackDevices()

◆ getLastError()

◆ initOpenAL()

◆ isBufferLoader()

◆ loadBuffer()

◆ logError()

◆ playBGM()

◆ preLoadBuffer()

◆ removeSource()

◆ shutdownOpenAL()

◆ stopBGM()

◆ unloadBuffer()

◆ update()

◆ updateListenerOrient()

◆ updateListenerPos()

Friends And Related Function Documentation

◆ AnnEngine

Member Data Documentation

◆ alContext

◆ alDevice

◆ audioFileManager

◆ audioSources

◆ bgmBuffer

◆ bgmSource

◆ buffers

◆ detectedDevices

◆ lastError

◆ locked