GainCodecpublic class GainCodec extends BasicCodec
| Fields Summary |
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| private static String | GainCodec | | public float | gain |
| Constructors Summary |
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public GainCodec()
inputFormats = new Format[] {new AudioFormat(AudioFormat.LINEAR,
Format.NOT_SPECIFIED,
16,
Format.NOT_SPECIFIED,
Format.NOT_SPECIFIED,
Format.NOT_SPECIFIED,
Format.NOT_SPECIFIED,
Format.NOT_SPECIFIED,
Format.shortArray)};
outputFormats= new Format[] {new AudioFormat(AudioFormat.LINEAR,
Format.NOT_SPECIFIED,
16,
Format.NOT_SPECIFIED,
Format.NOT_SPECIFIED,
Format.NOT_SPECIFIED,
Format.NOT_SPECIFIED,
Format.NOT_SPECIFIED,
Format.shortArray)};
|
| Methods Summary |
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| public java.lang.String | getName()
return GainCodec;
| | public javax.media.Format[] | getSupportedOutputFormats(javax.media.Format in)
if (! (in instanceof AudioFormat) )
return outputFormats;
AudioFormat iaf=(AudioFormat) in;
if (!(iaf.getEncoding().equals(AudioFormat.LINEAR)) ||
(iaf.getDataType()!=Format.shortArray) )
return new Format[0];
AudioFormat oaf = new AudioFormat(AudioFormat.LINEAR,
iaf.getSampleRate(),
16,
iaf.getChannels(),
AudioFormat.LITTLE_ENDIAN,
AudioFormat.SIGNED,
iaf.getFrameSizeInBits(),
iaf.getFrameRate(),
Format.shortArray);
return new Format[] {oaf};
| | public static void | main(java.lang.String[] args)
GainCodec codec=new GainCodec();
Format[] ifmt=codec.getSupportedInputFormats();
Format[] ofmt=codec.getSupportedOutputFormats(null);//new AudioFormat(AudioFormat.LINEAR,8000,8,2,false,false,0xffff));
Buffer inp=new Buffer();
Buffer out=new Buffer();
short[] buffer=new short[100];
for (int i=0;i<100;i++) {
buffer[i]=(short)(i+20500);
}
inp.setData(buffer);
inp.setLength(10);
inp.setOffset(0);
codec.setGain(1.6F);
int rc=codec.process(inp,out);
System.out.println("rc="+rc);
short[] outbuf=(short[])out.getData();
System.out.println("length="+out.getLength());
System.out.println("offset="+out.getOffset());
for (int i=0;i<outbuf.length;i++) {
System.out.println(i+" "+outbuf[i]);
}
inp.setLength(0);
inp.setEOM(true);
rc=codec.process(inp,out);
System.out.println("rc="+rc);
outbuf=(short[])out.getData();
System.out.println("length="+out.getLength());
System.out.println("offset="+out.getOffset());
for (int i=0;i<outbuf.length;i++) {
System.out.println(i+" "+outbuf[i]);
}
/*
for (int i=0; i<ifmt.length ; i++) {
System.out.println(ifmt[i]);
}
System.out.println("* out *");
for (int i=0; i<ofmt.length ; i++) {
System.out.println(ofmt[i]);
}
*/
| | public int | process(javax.media.Buffer inputBuffer, javax.media.Buffer outputBuffer)
// == prolog
if (isEOM(inputBuffer) ) {
propagateEOM(outputBuffer);
return BUFFER_PROCESSED_OK;
}
short[] inBuffer = (short[])inputBuffer.getData();
int inLength = inputBuffer.getLength();
int inOffset = inputBuffer.getOffset();
int samplesNumber = inLength;
short[] outBuffer = validateShortArraySize(outputBuffer, samplesNumber);
// == main
for (int i=0; i< samplesNumber;i++) {
int sample = inBuffer[inOffset + i];
sample = (int)(sample * gain);
if (sample>32767) // saturate
sample = 32767;
else if (sample < -32768)
sample = -32768;
outBuffer[i]=(short) sample;
}
// == epilog
updateOutput(outputBuffer,outputFormat, samplesNumber, 0);
return BUFFER_PROCESSED_OK;
| | public void | setGain(float newGain)
gain=newGain;
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