OPL::NUKED::OPL Class Reference

Inheritance diagram for OPL::NUKED::OPL:

Public Member Functions
	OPL (Config::OplType type)
bool	init ()
void	reset ()
void	write (int a, int v)
byte	read (int a)
void	writeReg (int r, int v)
bool	isStereo () const
Public Member Functions inherited from OPL::EmulatedOPL
void	setCallbackFrequency (int timerFrequency)
int	readBuffer (int16 *buffer, const int numSamples)
int	getRate () const
bool	endOfData () const
Public Member Functions inherited from OPL::OPL
void	start (TimerCallback *callback, int timerFrequency=kDefaultCallbackFrequency)
void	stop ()

Protected Member Functions
void	generateSamples (int16 *buffer, int length)
Protected Member Functions inherited from OPL::EmulatedOPL
void	startCallbacks (int timerFrequency)
void	stopCallbacks ()
Protected Member Functions inherited from OPL::OPL
void	initDualOpl2OnOpl3 (Config::OplType oplType)
bool	emulateDualOpl2OnOpl3 (int r, int v, Config::OplType oplType)
Protected Member Functions inherited from Audio::AudioStream
virtual bool	endOfStream () const

Additional Inherited Members
Public Types inherited from OPL::OPL
enum	{ kDefaultCallbackFrequency = 250 }
Protected Attributes inherited from OPL::OPL
Common::ScopedPtr< TimerCallback >	_callback
bool	_rhythmMode
int	_connectionFeedbackValues [3]

Member Function Documentation

init()

bool OPL::NUKED::OPL::init ( )

virtual

Initializes the OPL emulator.

Returns

true on success, false on failure

Implements OPL::OPL.

reset()

void OPL::NUKED::OPL::reset ( )

virtual

Reinitializes the OPL emulator

Implements OPL::OPL.

write()

void OPL::NUKED::OPL::write ( int  a, int  v  )

virtual

Writes a byte to the given I/O port.

Parameters

a	port address
v	value, which will be written

Implements OPL::OPL.

read()

byte OPL::NUKED::OPL::read ( int  a )

virtual

Reads a byte from the given I/O port.

Parameters

a	port address

Returns

value read

Implements OPL::OPL.

writeReg()

void OPL::NUKED::OPL::writeReg ( int  r, int  v  )

virtual

Function to directly write to a specific OPL register. This writes to both chips for a Dual OPL2. We allow writing to secondary OPL registers by using register values >= 0x100.

Parameters

r	hardware register number to write to
v	value, which will be written

Implements OPL::OPL.

isStereo()

bool OPL::NUKED::OPL::isStereo ( ) const

inlinevirtual

Check whether this is a stereo stream.

Implements Audio::AudioStream.

generateSamples()

void OPL::NUKED::OPL::generateSamples ( int16 *  buffer, int  numSamples  )

protectedvirtual

Read up to 'length' samples.

Data will be in native endianess, 16 bit per sample, signed. For stereo OPL, buffer will be filled with interleaved left and right channel samples, starting with a left sample. Furthermore, the samples in the left and right are summed up. So if you request 4 samples from a stereo OPL, you will get a total of two left channel and two right channel samples.

Implements OPL::EmulatedOPL.

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

• audio/softsynth/opl/nuked.h