SoundManager Class Reference

Provides sound effects and caching services, as well as mixing buffers for the SoundPlay process. More...

#include <SoundManager.h>

Classes
struct	PlayState
	Holds data about sounds currently being played. More...
struct	SoundData
	Holds data about the loaded sounds. More...
Public Types
enum	MixMode_t { Fast, Quality }
	Used to set the mode for mixing multiple sound channels. More...
enum	QueueMode_t { Enqueue, Pause, Stop, Override }
	indicates how to handle channel overflow (trying to play more sounds than maximum number of mixing channels). See queue_mode More...
typedef SoundManagerMsg::Snd_ID	Snd_ID
	This is used for referring to sound data so you can start playing it or release it.
typedef unsigned short	Play_ID
	This is for referring to instances of the play command so you can stop, pause, or monitor progress (later versions will send events upon completion).
Public Member Functions
virtual	~SoundManager ()
	destructor
	SoundManager ()
	constructor, should only be called by the receiving process (SoundPlay)
void	InitAccess (MessageQueueBase &sndbufq)
	Each process (except SoundPlay) needs to call this before it can send sounds to the SoundPlay process.
Snd_ID	loadFile (std::string const &name)
	loads a wav file (if it matches Config::sound_config settings - can't do resampling yet)
Snd_ID	loadBuffer (const char buf[], unsigned int len)
	loads raw samples from a buffer (assumes matches Config::sound_config settings)
void	releaseFile (std::string const &name)
	Marks the sound buffer to be released after the last play command completes (or right now if not being played).
void	release (Snd_ID id)
	Marks the sound buffer to be released after the last play command completes (or right now if not being played).
Play_ID	playFile (std::string const &name)
	play a wav file (if it matches Config::sound_config settings - can't do resampling yet)
Play_ID	playBuffer (const char buf[], unsigned int len)
	loads raw samples from a buffer (assumes buffer matches Config::sound_config settings)
Play_ID	play (Snd_ID id)
	plays a previously loaded buffer or file
Play_ID	chainFile (Play_ID base, std::string const &next)
	allows automatic queuing of sounds - good for dynamic sound sources!
Play_ID	chainBuffer (Play_ID base, const char buf[], unsigned int len)
	allows automatic queuing of sounds - good for dynamic sound sources!
Play_ID	chain (Play_ID base, Snd_ID next)
	allows automatic queuing of sounds - good for dynamic sound sources!
SoundManager::Play_ID	speak (const std::string &text, bool showText=true, const std::string &voice="female")
	Speaks its argument using the Mary text-to-speech system to generate a WAV file.
void	stopPlay ()
	Lets you stop playback of all sounds.
void	stopPlay (Play_ID id)
	Lets you stop playback of a sound.
void	pausePlay (Play_ID id)
	Lets you pause playback.
void	resumePlay (Play_ID id)
	Lets you resume playback.
void	setMode (unsigned int max_channels, MixMode_t mixer_mode, QueueMode_t queuing_mode)
	Lets you control the maximum number of channels (currently playing sounds), method for mixing (applies when max_chan>1), and queuing method (for when overflow channels).
unsigned int	getRemainTime (Play_ID id) const
	Gives the time until the sound finishes, in milliseconds. Subtract 32 to get guarranteed valid time for this ID.
unsigned int	CopyTo (void *dest, size_t destSize)
	Copies the sound data to the specified memory buffer, ready to be passed to the system.
void	ProcessMsg (RCRegion *rcr)
	updates internal data structures on the SoundPlay side - you shouldn't be calling this
unsigned int	getNumPlaying ()
	returns number of sounds currently playing
virtual unsigned int	getNextKey ()
	return the next region serial number -- doesn't actually increment it though, repeated calls will return the same value until the value is actually used
Static Public Attributes
static const Snd_ID	invalid_Snd_ID = (Snd_ID)-1
	for reporting errors
static const Snd_ID	MAX_SND = 50
	the number of sounds that can be loaded at any given time
static const Play_ID	invalid_Play_ID = (Play_ID)-1
	for reporting errors
static const Play_ID	MAX_PLAY = 256
	the number of sounds that can be enqueued at the same time (see MixMode_t)
static const unsigned int	MAX_NAME_LEN = 128
	maximum length of a path
Protected Types
typedef ListMemBuf< SoundData, MAX_SND, Snd_ID >	sndlist_t
	For convenience.
typedef ListMemBuf< PlayState, MAX_PLAY, Play_ID >	playlist_t
	For convenience.
typedef ListMemBuf< Play_ID, MAX_PLAY, Play_ID >	chanlist_t
	For convenience.
Protected Member Functions
void	mixChannel (Play_ID channelId, void *buf, size_t size)
	Mixes the channel into the buffer.
void	mixChannelAdditively (Play_ID channelId, int bitsPerSample, MixMode_t mode, short scalingFactor, void *buf, size_t size)
	Mixes the channel into the buffer additively.
RCRegion *	initRegion (unsigned int size)
	Sets up a shared region to hold a sound - rounds to nearest page size.
Snd_ID	lookupPath (std::string const &name) const
	Looks to see if name matches any of the sounds in sndlist (converts to absolute path if not already).
void	selectChannels (std::vector< Play_ID > &mix)
	selects which of the channels are actually to be mixed together, depending on queue_mode
void	updateChannels (const std::vector< Play_ID > &mixs, size_t used)
	update the offsets of sounds which weren't mixed (when needed depending on queue_mode)
bool	endPlay (Play_ID id)
	called when a buffer end is reached, may reset buffer to next in chain, or just stopPlay()
Protected Attributes
int *	mixerBuffer
	The intermediate mixer buffer used for Quality mode mixing.
size_t	mixerBufferSize
	Size (in bytes) of the intermediate mixer buffer.
sndlist_t	sndlist
	Holds a list of all currently loaded sounds.
playlist_t	playlist
	Holds a list of all sounds currently enqueued.
chanlist_t	chanlist
	Holds a list of all currently playing sounds, ordered newest (front) to oldest(back).
MixMode_t	mix_mode
	Current mixing mode, set by setMode();.
QueueMode_t	queue_mode
	Current queuing mode, set by setMode();.
unsigned int	max_chan
	Current maximum number of sounds to mix together.
MutexLock < ProcessID::NumProcesses >	lock
	Prevents multiple processes from accessing at the same time.
unsigned int	sn
	A serial number, incremented for each sound which is created.
MessageQueueBase *	subjs [ProcessID::NumProcesses]
	Storage of each process's attachment of the message queue, used to internally transmit sound buffers to SoundPlay.
Static Protected Attributes
static const unsigned int	MSG_SIZE = ((sizeof(SoundManagerMsg)-1)/8+1)*8
	the size of a SoundManagerMsg, which is prefixed before each region sent/received by SoundManager (rounded up to nearest even word boundary)
Private Member Functions
	SoundManager (const SoundManager &)
	don't call
SoundManager	operator= (const SoundManager &)
	don't call

Detailed Description

Provides sound effects and caching services, as well as mixing buffers for the SoundPlay process.

Provides easy methods for playing back sounds, either from files on the memory stick, or from dynamically generated buffers. You can chain playback commands so that when one sound finishes, another picks up automatically. This might be handy if, say, someone wants to write an MP3 player ;) The sounds would be too large to load into memory all at once, but you could load a block at a time and chain them so it seamlessly moves from one to the other.

You can also preload sounds (loadFile()) before playing them (play() / playFile()) so there's no delay between requesting a sound and having it start playing while it is loaded from disk/memory stick. Just be sure to release the file (releaseFile()) again when you're done with it ;)

All functions will attempt to lock the SoundManager. Remember, this is running in a shared memory region, accessible by the SoundPlay process and both the Main and Motion processes (so MotionCommands can play sounds!)

One could be tempted to draw parallels to the MotionManager, and envision a system with SoundCommands that are handed over and can dynamically compute sound buffers as needed. If you have the time and inclination, the job's all yours... (Midi players, speech synthesizer, ...?)

Todo:: Volume control, variable playback speed, support more wav file formats (latter two are the same thing if you think about it - need to be able to resample on the fly)

Todo:: Add functions to hand out regions to be filled out to avoid copying into the buffer.

See also:: David Touretzky's "Playing Sounds" Chapter

Definition at line 58 of file SoundManager.h.

Member Typedef Documentation

typedef ListMemBuf<Play_ID,MAX_PLAY,Play_ID> SoundManager::chanlist_t [protected]

For convenience.

Definition at line 265 of file SoundManager.h.

typedef unsigned short SoundManager::Play_ID

This is for referring to instances of the play command so you can stop, pause, or monitor progress (later versions will send events upon completion).

Definition at line 79 of file SoundManager.h.

typedef ListMemBuf<PlayState,MAX_PLAY,Play_ID> SoundManager::playlist_t [protected]

For convenience.

Definition at line 261 of file SoundManager.h.

typedef SoundManagerMsg::Snd_ID SoundManager::Snd_ID

This is used for referring to sound data so you can start playing it or release it.

Definition at line 74 of file SoundManager.h.

typedef ListMemBuf<SoundData,MAX_SND,Snd_ID> SoundManager::sndlist_t [protected]

For convenience.

Definition at line 248 of file SoundManager.h.

Member Enumeration Documentation

enum SoundManager::MixMode_t

Used to set the mode for mixing multiple sound channels.

Feel free to add a higher quality mixer if you're an audiophile - I'm pretty new to sound processing

Enumerator:

Fast	uses real division to maintain volume level, without increasing intermediary precision, which causes low-order bit error in exchange for less CPU usage
Quality	uses real division to maintain volume level, using an intermediary higher precision buffer for mixing

Definition at line 87 of file SoundManager.h.

enum SoundManager::QueueMode_t

indicates how to handle channel overflow (trying to play more sounds than maximum number of mixing channels). See queue_mode

Enumerator:

Enqueue	newer sounds are played when a channel opens up (when old sound finishes)
Pause	newer sounds pause oldest sound, which continues when a channel opens
Stop	newer sounds stop oldest sound
Override	older sounds have play heads advanced, but don't get mixed until a channel opens

Definition at line 94 of file SoundManager.h.

Constructor & Destructor Documentation

SoundManager::~SoundManager ( ) [virtual]

destructor

Definition at line 50 of file SoundManager.cc.

SoundManager::SoundManager ( )

constructor, should only be called by the receiving process (SoundPlay)

Definition at line 33 of file SoundManager.cc.

SoundManager::SoundManager ( const SoundManager & ) [private]

don't call

Member Function Documentation

SoundManager::Play_ID SoundManager::chain	(	Play_ID	base,
		Snd_ID	next
	)

allows automatic queuing of sounds - good for dynamic sound sources!

if you chain more than once to the same base, the new buffers are appended to the end of the chain - the new buffer doesn't replace the current chain

Returns:: base - just for convenience of multiple calls

Definition at line 330 of file SoundManager.cc.

SoundManager::Play_ID SoundManager::chainBuffer	(	Play_ID	base,
		const char	buf[],
		unsigned int	len
	)

allows automatic queuing of sounds - good for dynamic sound sources!

if you chain more than once to the same base, the new buffers are appended to the end of the chain - the new buffer doesn't replace the current chain

Returns:: base - just for convenience of multiple calls

Definition at line 310 of file SoundManager.cc.

Referenced by SpeakerServer::QueueFrame().

SoundManager::Play_ID SoundManager::chainFile	(	Play_ID	base,
		std::string const &	next
	)

allows automatic queuing of sounds - good for dynamic sound sources!

if you chain more than once to the same base, the new buffers are appended to the end of the chain - the new buffer doesn't replace the current chain

Returns:: base - just for convenience of multiple calls

Definition at line 290 of file SoundManager.cc.

unsigned int SoundManager::CopyTo	(	void *	dest,
		size_t	destSize
	)

Copies the sound data to the specified memory buffer, ready to be passed to the system.

Returns:: the number of active sounds

Definition at line 626 of file SoundManager.cc.

bool SoundManager::endPlay ( Play_ID id ) [protected]

called when a buffer end is reached, may reset buffer to next in chain, or just stopPlay()

Definition at line 896 of file SoundManager.cc.

Referenced by mixChannel(), mixChannelAdditively(), selectChannels(), and updateChannels().

virtual unsigned int SoundManager::getNextKey ( ) [virtual]

return the next region serial number -- doesn't actually increment it though, repeated calls will return the same value until the value is actually used

Definition at line 202 of file SoundManager.h.

unsigned int SoundManager::getNumPlaying ( )

returns number of sounds currently playing

Definition at line 199 of file SoundManager.h.

unsigned int SoundManager::getRemainTime ( Play_ID id ) const

Gives the time until the sound finishes, in milliseconds. Subtract 32 to get guarranteed valid time for this ID.

You should be passing the beginning of a chain to get proper results...
May be slightly conservative (will report too small a time) because this does not account for delay until SoundPlay picks up the message that a sound has been added.
However, it is slighly optimistic (will report too large a time) because it processes a buffer all at one go, so it could mark the sound as finished (and cause the ID to go invalid) up to RobotInfo::SoundBufferTime (32 ms) before the sound finishes. So subtract SoundBufferTime if you want to be absolutely sure the ID will still valid.

Definition at line 501 of file SoundManager.cc.

Referenced by SpeakerServer::QueueFrame().

void SoundManager::InitAccess ( MessageQueueBase & sndbufq )

Each process (except SoundPlay) needs to call this before it can send sounds to the SoundPlay process.

Definition at line 45 of file SoundManager.cc.

RCRegion * SoundManager::initRegion ( unsigned int size ) [protected]

Sets up a shared region to hold a sound - rounds to nearest page size.

Definition at line 768 of file SoundManager.cc.

Referenced by loadBuffer(), play(), and release().

SoundManager::Snd_ID SoundManager::loadBuffer	(	const char	buf[],
		unsigned int	len
	)

loads raw samples from a buffer (assumes matches Config::sound_config settings)

The sound data will be cached until release() is called a matching number of times.
This function is useful for dynamic sound sources. A copy will be made.

Definition at line 113 of file SoundManager.cc.

Referenced by chainBuffer(), loadFile(), and playBuffer().

SoundManager::Snd_ID SoundManager::loadFile ( std::string const & name )

loads a wav file (if it matches Config::sound_config settings - can't do resampling yet)

Since the SoundManager does the loading, if the same file is being played more than once, only once copy is stored in memory

Parameters:

name

can be either a full path, or a partial path relative to Config::sound_config::root

Returns:: ID number for future references (can also use name) The sound data will be cached until releaseFile() or release() is called a matching number of times

Todo:: this does one more copy than it really needs to

Definition at line 69 of file SoundManager.cc.

Referenced by chainFile(), Controller::DoStart(), and playFile().

SoundManager::Snd_ID SoundManager::lookupPath ( std::string const & name ) const [protected]

Looks to see if name matches any of the sounds in sndlist (converts to absolute path if not already).

Definition at line 787 of file SoundManager.cc.

Referenced by loadFile(), and releaseFile().

void SoundManager::mixChannel	(	Play_ID	channelId,
		void *	buf,
		size_t	size
	)			`[protected]`

Mixes the channel into the buffer.

Definition at line 513 of file SoundManager.cc.

Referenced by CopyTo().

void SoundManager::mixChannelAdditively	(	Play_ID	channelId,
		int	bitsPerSample,
		MixMode_t	mode,
		short	scalingFactor,
		void *	buf,
		size_t	size
	)			`[protected]`

Mixes the channel into the buffer additively.

If mode is Quality, then the size of the buffer should be double the normal size.

Definition at line 543 of file SoundManager.cc.

Referenced by CopyTo().

SoundManager SoundManager::operator= ( const SoundManager & ) [private]

don't call

void SoundManager::pausePlay ( Play_ID id )

Lets you pause playback.

Definition at line 470 of file SoundManager.cc.

SoundManager::Play_ID SoundManager::play ( Snd_ID id )

plays a previously loaded buffer or file

Definition at line 244 of file SoundManager.cc.

Referenced by chain(), playBuffer(), and playFile().

SoundManager::Play_ID SoundManager::playBuffer	(	const char	buf[],
		unsigned int	len
	)

loads raw samples from a buffer (assumes buffer matches Config::sound_config settings)

The sound data will be released after done playing

Definition at line 232 of file SoundManager.cc.

Referenced by chainBuffer(), and SpeakerServer::QueueFrame().

SoundManager::Play_ID SoundManager::playFile ( std::string const & name )

play a wav file (if it matches Config::sound_config settings - can't do resampling yet)

Will do a call to loadFile() first, and then automatically release the sound again when complete.

Parameters:

name

can be either a full path, or a partial path relative to Config::sound_config::root

Returns:: ID number for future references The sound data will not be cached after done playing unless a call to loadFile is made

Definition at line 218 of file SoundManager.cc.

Referenced by chainFile(), ControlBase::doCancel(), ControlBase::doNextItem(), ControlBase::doPrevItem(), ControlBase::doReadStdIn(), WalkCalibration::doSelect(), SensorObserverControl::doSelect(), EventLogger::doSelect(), ControlBase::doSelect(), WalkCalibration::err(), Transition::fire(), RandomTrans::fire(), WalkCalibration::processEvent(), AutoGetupBehavior::processEvent(), TorqueCalibrate::record(), UPennWalkControllerBehavior::runCommand(), RunSequenceControl< SequenceSize >::selectedFile(), PlaySoundControl::selectedFile(), LoadPostureControl::selectedFile(), ControlBase::setHilights(), EmergencyStopMC::setStopped(), speak(), SoundNode::startPlaying(), WalkCalibration::takeInput(), TorqueCalibrate::TakeMeasurementControl::takeInput(), and TorqueCalibrate::TakeMeasurementControl::transition().

void SoundManager::ProcessMsg ( RCRegion * rcr )

updates internal data structures on the SoundPlay side - you shouldn't be calling this

Definition at line 702 of file SoundManager.cc.

void SoundManager::release ( Snd_ID id )

Marks the sound buffer to be released after the last play command completes (or right now if not being played).

Definition at line 167 of file SoundManager.cc.

Referenced by endPlay(), releaseFile(), and stopPlay().

void SoundManager::releaseFile ( std::string const & name )

Marks the sound buffer to be released after the last play command completes (or right now if not being played).

Definition at line 161 of file SoundManager.cc.

Referenced by Controller::DoStop().

void SoundManager::resumePlay ( Play_ID id )

Lets you resume playback.

Definition at line 482 of file SoundManager.cc.

void SoundManager::selectChannels ( std::vector< Play_ID > & mix ) [protected]

selects which of the channels are actually to be mixed together, depending on queue_mode

Definition at line 803 of file SoundManager.cc.

Referenced by CopyTo().

void SoundManager::setMode	(	unsigned int	max_channels,
		MixMode_t	mixer_mode,
		QueueMode_t	queuing_mode
	)

Lets you control the maximum number of channels (currently playing sounds), method for mixing (applies when max_chan>1), and queuing method (for when overflow channels).

Definition at line 493 of file SoundManager.cc.

SoundManager::Play_ID SoundManager::speak	(	const std::string &	text,
		bool	showText = `true`,
		const std::string &	voice = `"female"`
	)

Speaks its argument using the Mary text-to-speech system to generate a WAV file.

On Aperios or unsupported platforms, simply displays the text on stdout

Definition at line 385 of file SoundManager.cc.

Referenced by Transition::fire(), SpeechNode::start(), StateNode::startCommon(), SpeechNode::startEvent(), and BatteryMonitorBehavior::startWarning().

void SoundManager::stopPlay ( Play_ID id )

Lets you stop playback of a sound.

Definition at line 441 of file SoundManager.cc.

void SoundManager::stopPlay ( )

Lets you stop playback of all sounds.

Definition at line 435 of file SoundManager.cc.

Referenced by SpeakerServer::DoStop(), endPlay(), SpeakerServer::QueueFrame(), PlaySoundControl::selectedFile(), SpeechNode::stopPlay(), SoundNode::stopPlay(), and ~SoundManager().

void SoundManager::updateChannels	(	const std::vector< Play_ID > &	mixs,
		size_t	used
	)			`[protected]`

update the offsets of sounds which weren't mixed (when needed depending on queue_mode)

Definition at line 848 of file SoundManager.cc.

Referenced by CopyTo().

Member Data Documentation

chanlist_t SoundManager::chanlist [protected]

Holds a list of all currently playing sounds, ordered newest (front) to oldest(back).

Definition at line 267 of file SoundManager.h.

Referenced by CopyTo(), getNumPlaying(), pausePlay(), play(), resumePlay(), selectChannels(), stopPlay(), and updateChannels().

const Play_ID SoundManager::invalid_Play_ID = (Play_ID)-1 [static]

for reporting errors

Definition at line 80 of file SoundManager.h.

Referenced by chain(), chainBuffer(), chainFile(), SpeakerServer::DoStart(), SpeakerServer::DoStop(), endPlay(), getRemainTime(), pausePlay(), play(), playBuffer(), playFile(), SpeechNode::processEvent(), SoundNode::processEvent(), SpeakerServer::QueueFrame(), resumePlay(), speak(), SpeechNode::stopPlay(), SoundNode::stopPlay(), and stopPlay().

const Snd_ID SoundManager::invalid_Snd_ID = (Snd_ID)-1 [static]

for reporting errors

Definition at line 75 of file SoundManager.h.

Referenced by chain(), chainBuffer(), chainFile(), loadBuffer(), loadFile(), lookupPath(), play(), playBuffer(), playFile(), and release().

MutexLock<ProcessID::NumProcesses> SoundManager::lock [mutable, protected]

Prevents multiple processes from accessing at the same time.

Definition at line 279 of file SoundManager.h.

Referenced by CopyTo(), getRemainTime(), loadBuffer(), loadFile(), pausePlay(), play(), playBuffer(), playFile(), release(), releaseFile(), resumePlay(), setMode(), and stopPlay().

unsigned int SoundManager::max_chan [protected]

Current maximum number of sounds to mix together.

Definition at line 276 of file SoundManager.h.

Referenced by selectChannels(), and setMode().

const unsigned int SoundManager::MAX_NAME_LEN = 128 [static]

maximum length of a path

Definition at line 83 of file SoundManager.h.

Referenced by loadFile(), and lookupPath().

const Play_ID SoundManager::MAX_PLAY = 256 [static]

the number of sounds that can be enqueued at the same time (see MixMode_t)

Definition at line 81 of file SoundManager.h.

const Snd_ID SoundManager::MAX_SND = 50 [static]

the number of sounds that can be loaded at any given time

Definition at line 76 of file SoundManager.h.

MixMode_t SoundManager::mix_mode [protected]

Current mixing mode, set by setMode();.

Definition at line 270 of file SoundManager.h.

Referenced by CopyTo(), and setMode().

int* SoundManager::mixerBuffer [protected]

The intermediate mixer buffer used for Quality mode mixing.

Definition at line 214 of file SoundManager.h.

Referenced by CopyTo(), and ~SoundManager().

size_t SoundManager::mixerBufferSize [protected]

Size (in bytes) of the intermediate mixer buffer.

Definition at line 217 of file SoundManager.h.

Referenced by CopyTo().

const unsigned int SoundManager::MSG_SIZE = ((sizeof(SoundManagerMsg)-1)/8+1)*8 [static, protected]

the size of a SoundManagerMsg, which is prefixed before each region sent/received by SoundManager (rounded up to nearest even word boundary)

Definition at line 292 of file SoundManager.h.

Referenced by loadBuffer(), play(), ProcessMsg(), and release().

playlist_t SoundManager::playlist [protected]

Holds a list of all sounds currently enqueued.

Definition at line 263 of file SoundManager.h.

Referenced by chain(), chainBuffer(), chainFile(), endPlay(), getRemainTime(), mixChannel(), mixChannelAdditively(), play(), playBuffer(), playFile(), ProcessMsg(), selectChannels(), stopPlay(), and updateChannels().

QueueMode_t SoundManager::queue_mode [protected]

Current queuing mode, set by setMode();.

Definition at line 273 of file SoundManager.h.

Referenced by selectChannels(), setMode(), and updateChannels().

unsigned int SoundManager::sn [protected]

A serial number, incremented for each sound which is created.

This is used to verify that a sound message from a process refers to a current sound. If you imaging a pathological process, which rapidly creates and releases sounds, it would run through the sndlist ids, possibly before the sound process can process the incoming buffers. So this is used to ensure that a given message refers to the current sound, and not one that was already released and then reassigned.

Definition at line 289 of file SoundManager.h.

Referenced by getNextKey(), initRegion(), and loadBuffer().

sndlist_t SoundManager::sndlist [protected]

Holds a list of all currently loaded sounds.

Definition at line 250 of file SoundManager.h.

Referenced by endPlay(), getRemainTime(), loadBuffer(), loadFile(), lookupPath(), mixChannel(), mixChannelAdditively(), play(), playBuffer(), playFile(), ProcessMsg(), release(), selectChannels(), stopPlay(), updateChannels(), and ~SoundManager().

MessageQueueBase* SoundManager::subjs[ProcessID::NumProcesses] [protected]

Storage of each process's attachment of the message queue, used to internally transmit sound buffers to SoundPlay.

Definition at line 299 of file SoundManager.h.

Referenced by InitAccess(), loadBuffer(), play(), and release().

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

SoundManager Class Reference

Classes

Public Types

Public Member Functions

Static Public Attributes

Protected Types

Protected Member Functions

Protected Attributes

Static Protected Attributes

Private Member Functions

Detailed Description

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation