org.tritonus.lowlevel.gsm

Class Encoder

java.lang.Object

org.tritonus.lowlevel.gsm.Encoder

public class Encoder
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
Encoder() Encoder class constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	encode(java.io.InputStream input, java.lang.String output_file) Encode the specified InputStream.
void	encode(short[] asBuffer, byte[] abFrame) Encodes a block of data.
void	encode(java.lang.String input_file, java.lang.String output_file) Encode the specified file.
static void	stripAUHeader(java.io.InputStream in) Remove the header info from the stream and verifies the file type.

Methods inherited from class java.lang.Object

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

Constructor Detail

Encoder

public Encoder()

Encoder class constructor.

Method Detail

stripAUHeader

public static void stripAUHeader(java.io.InputStream in)
                          throws java.lang.Exception

Remove the header info from the stream and verifies the file type. As defined by the NeXT/Sun audio file format U-law (.au). For more info see the README file.

Note: Most of this info is not needed to reproduce the sound file after encoding. All that is needed is the magic number and the sampling rate to reproduce the sound file during decoding.

Parameters:

in - Strip the header from a Sun/Next formated sound stream.

Throws:

java.lang.Exception

encode

public void encode(java.lang.String input_file,
          java.lang.String output_file)
            throws java.lang.Exception

Encode the specified file.
This method calls the stripAUHeader method for you.
stripAUHeader will verify file type.

Parameters:

input_file - The name of the file to encode.

output_file - The name of the GSM encoded file.

Throws:

java.lang.Exception

encode

public void encode(java.io.InputStream input,
          java.lang.String output_file)
            throws java.io.IOException

Encode the specified InputStream.

Parameters:

input - The stream to encode.

output_file - The name of the GSM encoded file.

Throws:

java.io.IOException

encode

public void encode(short[] asBuffer,
          byte[] abFrame)

Encodes a block of data.

Parameters:

asBuffer - an 160-element array with the data to encode int PCM 16 bit format.

abFrame - the encoded GSM frame (33 bytes).