org.monte.media.audio

Class PCMAudioCodec

java.lang.Object

org.monte.media.AbstractCodec

org.monte.media.AbstractAudioCodec

org.monte.media.audio.PCMAudioCodec

All Implemented Interfaces:

Codec

Direct Known Subclasses:

AVIPCMAudioCodec, QuickTimePCMAudioCodec

public class PCMAudioCodec
extends AbstractAudioCodec

PCMAudioCodec performs sign conversion, endian conversion and quantization conversion of PCM audio data.

Does not perform sampling rate conversion or channel conversion.

FIXME Maybe create separate subclasses for AVI PCM and QuickTime PCM.

Version:

$Id: PCMAudioCodec.java 299 2013-01-03 07:40:18Z werner $

Author:

Werner Randelshofer

Field Summary

Fields inherited from class org.monte.media.AbstractCodec

inputFormat, inputFormats, name, outputFormat, outputFormats

Fields inherited from interface org.monte.media.Codec

CODEC_FAILED, CODEC_INPUT_NOT_CONSUMED, CODEC_OK, CODEC_OUTPUT_NOT_FILLED

Constructor Summary

Constructors

Modifier	Constructor and Description
	PCMAudioCodec()
protected	PCMAudioCodec(Format[] supportedInputAndOutputFormats)
protected	PCMAudioCodec(Format[] supportedInputFormats, Format[] supportedOutputFormats)

Method Summary

Methods

Modifier and Type	Method and Description
int	process(Buffer in, Buffer out) Performs the media processing defined by this codec.
protected void	write16STo16U(ImageInputStream in, ImageOutputStream out) 16-bit audio data signed in and unsigned out.
protected void	write16STo8U(ImageInputStream in, ImageOutputStream out) Signed 16-bit audio data in, unsigned 8-bit out.
protected void	write16To16(ImageInputStream in, ImageOutputStream out) 16-bit audio data in and out.
protected void	write16UTo16S(ImageInputStream in, ImageOutputStream out) 16-bit audio data unsigned in and signed out.
protected void	write8STo8S(ImageInputStream in, ImageOutputStream out, boolean fixSilenceBug) Signed 8-bit audio data in, signed out.
protected void	write8STo8U(ImageInputStream in, ImageOutputStream out, boolean fixSilenceBug) Signed 8-bit audio data in, unsigned out.
protected void	write8To8(ImageInputStream in, ImageOutputStream out) 8-bit audio data in and out.
protected void	write8UTo8S(ImageInputStream in, ImageOutputStream out, boolean fixSilenceBug) Unsigned 8-bit audio data in, signed out.

Methods inherited from class org.monte.media.AbstractCodec

getInputFormat, getInputFormats, getName, getOutputFormat, getOutputFormats, reset, setInputFormat, setOutputFormat, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

PCMAudioCodec

public PCMAudioCodec()

PCMAudioCodec

protected PCMAudioCodec(Format[] supportedInputFormats,
             Format[] supportedOutputFormats)

PCMAudioCodec

protected PCMAudioCodec(Format[] supportedInputAndOutputFormats)

Method Detail

process

public int process(Buffer in,
          Buffer out)

Description copied from interface: Codec

Performs the media processing defined by this codec.

Copies the data from the input buffer into the output buffer.

Returns:

A combination of processing flags.

write16To16

protected void write16To16(ImageInputStream in,
               ImageOutputStream out)
                    throws IOException

16-bit audio data in and out. No sign conversion. Endian conversion is performed by the stream objects.

Throws:

IOException

write16UTo16S

protected void write16UTo16S(ImageInputStream in,
                 ImageOutputStream out)
                      throws IOException

16-bit audio data unsigned in and signed out. Endian conversion is performed by the stream objects.

Throws:

IOException

write16STo16U

protected void write16STo16U(ImageInputStream in,
                 ImageOutputStream out)
                      throws IOException

16-bit audio data signed in and unsigned out. Endian conversion is performed by the stream objects.

Throws:

IOException

write16STo8U

protected void write16STo8U(ImageInputStream in,
                ImageOutputStream out)
                     throws IOException

Signed 16-bit audio data in, unsigned 8-bit out. Endian conversion is performed by the stream objects.

Throws:

IOException

write8To8

protected void write8To8(ImageInputStream in,
             ImageOutputStream out)
                  throws IOException

8-bit audio data in and out. No sign conversion.

Throws:

IOException

write8UTo8S

protected void write8UTo8S(ImageInputStream in,
               ImageOutputStream out,
               boolean fixSilenceBug)
                    throws IOException

Unsigned 8-bit audio data in, signed out.

Throws:

IOException

write8STo8U

protected void write8STo8U(ImageInputStream in,
               ImageOutputStream out,
               boolean fixSilenceBug)
                    throws IOException

Signed 8-bit audio data in, unsigned out.

Throws:

IOException

write8STo8S

protected void write8STo8S(ImageInputStream in,
               ImageOutputStream out,
               boolean fixSilenceBug)
                    throws IOException

Signed 8-bit audio data in, signed out.

Throws:

IOException