ZVision::RawZorkStream Class Reference

#include <zork_raw.h>

Inheritance diagram for ZVision::RawZorkStream:

Public Member Functions
	RawZorkStream (uint32 rate, bool stereo, DisposeAfterUse::Flag disposeStream, Common::SeekableReadStream *stream)
int	readBuffer (int16 *buffer, const int numSamples) override
bool	isStereo () const override
bool	endOfData () const override
int	getRate () const override
Audio::Timestamp	getLength () const
bool	rewind () override
Public Member Functions inherited from Audio::AudioStream
virtual bool	endOfStream () const

Static Public Attributes
static const SoundParams	_zNemSoundParamLookupTable [32]
static const SoundParams	_zgiSoundParamLookupTable [24]

Detailed Description

This is a stream, which allows for playing raw ADPCM data from a stream.

Member Function Documentation

readBuffer()

int ZVision::RawZorkStream::readBuffer ( int16 *  buffer, const int  numSamples  )

overridevirtual

Fill the given buffer with up to numSamples samples.

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

Returns

The actual number of samples read, or -1 if a critical error occurred.

Note

You must check whether the returned value is less than what you requested. This indicates that the stream is fully used up.

Implements Audio::AudioStream.

isStereo()

bool ZVision::RawZorkStream::isStereo ( ) const

inlineoverridevirtual

Check whether this is a stereo stream.

Implements Audio::AudioStream.

endOfData()

bool ZVision::RawZorkStream::endOfData ( ) const

inlineoverridevirtual

Check whether end of data has been reached.

If this returns true, it indicates that at this time there is no data available in the stream. However, there might be more data in the future.

This is used by e.g. a rate converter to decide whether to keep on converting data or to stop.

Implements Audio::AudioStream.

getRate()

int ZVision::RawZorkStream::getRate ( ) const

inlineoverridevirtual

Sample rate of the stream.

Implements Audio::AudioStream.

rewind()

bool ZVision::RawZorkStream::rewind ( )

overridevirtual

Rewind the stream to its start.

Returns

True on success, false otherwise.

Implements Audio::RewindableAudioStream.

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

• engines/zvision/sound/zork_raw.h