net.sf.fmj.media.codec

Class JavaSoundCodec

java.lang.Object

net.sf.fmj.media.AbstractControls

net.sf.fmj.media.AbstractPlugIn

net.sf.fmj.media.AbstractCodec

net.sf.fmj.media.codec.JavaSoundCodec

All Implemented Interfaces:

Codec, Controls, PlugIn

public class JavaSoundCodec
extends AbstractCodec

Converts formats that JavaSound can convert. This has to do some tricks because of the delay in getting data from the converted audio output stream. The streams are designed as streams, not buffer-based, so all our threading and buffer queue tricks mean that we don't get an output buffer right away for an input one. The missing output buffers build up. And then we get EOM, and if the graph processing isn't done right, most of the output buffers never make it to the renderer. TODO: if this is put ahead of com.ibm.media.codec.audio.PCMToPCM in the registry, there are problems playing the safexmas movie. TODO: this should perhaps be in the net.sf.fmj.media.codec.audio package.

Author:

Ken Larson

Field Summary

Fields inherited from class net.sf.fmj.media.AbstractCodec

inputFormat, inputFormats, opened, outputFormat

Fields inherited from interface javax.media.PlugIn

BUFFER_PROCESSED_FAILED, BUFFER_PROCESSED_OK, INPUT_BUFFER_NOT_CONSUMED, OUTPUT_BUFFER_NOT_FILLED, PLUGIN_TERMINATED

Constructor Summary

Constructors

Constructor and Description
JavaSoundCodec()

Method Summary

Methods

Modifier and Type	Method and Description
static byte[]	createAuHeader(javax.sound.sampled.AudioFormat f) Used to create a "fake" AU header for fakeHeader.
static byte[]	createWavHeader(javax.sound.sampled.AudioFormat f) See http://ccrma.stanford.edu/courses/422/projects/WaveFormat/.
static void	encodeShortBE(short value, byte[] ba, int offset)
static void	encodeShortLE(short value, byte[] ba, int offset)
Format[]	getSupportedOutputFormats(Format input)
void	open()
int	process(Buffer input, Buffer output)

Methods inherited from class net.sf.fmj.media.AbstractCodec

checkInputBuffer, dump, getInputFormat, getOutputFormat, getSupportedInputFormats, isEOM, propagateEOM, setInputFormat, setOutputFormat

Methods inherited from class net.sf.fmj.media.AbstractPlugIn

close, getName, reset

Methods inherited from class net.sf.fmj.media.AbstractControls

addControl, getControl, getControls, removeControl

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.media.PlugIn

close, getName, reset

Methods inherited from interface javax.media.Controls

getControl, getControls

Constructor Detail

JavaSoundCodec

public JavaSoundCodec()

Method Detail

getSupportedOutputFormats

public Format[] getSupportedOutputFormats(Format input)

Specified by:

getSupportedOutputFormats in interface Codec

Specified by:

getSupportedOutputFormats in class AbstractCodec

open

public void open()
          throws ResourceUnavailableException

Specified by:

open in interface PlugIn

Overrides:

open in class AbstractPlugIn

Throws:

ResourceUnavailableException

process

public int process(Buffer input,
          Buffer output)

Specified by:

process in interface Codec

Specified by:

process in class AbstractCodec

createAuHeader

public static byte[] createAuHeader(javax.sound.sampled.AudioFormat f)

Used to create a "fake" AU header for fakeHeader. See http://en.wikipedia.org/wiki/Au_file_format. The Au file format is a simple audio file format that consists of a header of 6 32-bit words and then the data (high-order byte comes first). The format was introduced by Sun Microsystems.

createWavHeader

public static byte[] createWavHeader(javax.sound.sampled.AudioFormat f)

See http://ccrma.stanford.edu/courses/422/projects/WaveFormat/.

Parameters:

f -

Returns:

the header for the wav

encodeShortLE

public static void encodeShortLE(short value,
                 byte[] ba,
                 int offset)

encodeShortBE

public static void encodeShortBE(short value,
                 byte[] ba,
                 int offset)