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/*
* 11/19/04 1.0 moved to LGPL.
*
* 12/12/99 Initial Version based on FileObuffer. mdm@techie.com.
*
* FileObuffer:
* 15/02/99 Java Conversion by E.B ,javalayer@javazoom.net
*
*-----------------------------------------------------------------------
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*----------------------------------------------------------------------
*/
package javazoom.jl.decoder;
/**
* The <code>SampleBuffer</code> class implements an output buffer
* that provides storage for a fixed size block of samples.
*/
public class SampleBuffer extends Obuffer
{
private short[] buffer;
private int[] bufferp;
private int channels;
private int frequency;
/**
* Constructor
*/
public SampleBuffer(int sample_frequency, int number_of_channels)
{
buffer = new short[OBUFFERSIZE];
bufferp = new int[MAXCHANNELS];
channels = number_of_channels;
frequency = sample_frequency;
for (int i = 0; i < number_of_channels; ++i)
bufferp[i] = (short)i;
}
public int getChannelCount()
{
return this.channels;
}
public int getSampleFrequency()
{
return this.frequency;
}
public short[] getBuffer()
{
return this.buffer;
}
public int getBufferLength()
{
return bufferp[0];
}
/**
* Takes a 16 Bit PCM sample.
*/
public void append(int channel, short value)
{
buffer[bufferp[channel]] = value;
bufferp[channel] += channels;
}
public void appendSamples(int channel, float[] f)
{
int pos = bufferp[channel];
short s;
float fs;
for (int i=0; i<32;)
{
fs = f[i++];
fs = (fs>32767.0f ? 32767.0f
: (fs < -32767.0f ? -32767.0f : fs));
s = (short)fs;
buffer[pos] = s;
pos += channels;
}
bufferp[channel] = pos;
}
/**
* Write the samples to the file (Random Acces).
*/
public void write_buffer(int val)
{
//for (int i = 0; i < channels; ++i)
// bufferp[i] = (short)i;
}
public void close()
{}
/**
*
*/
public void clear_buffer()
{
for (int i = 0; i < channels; ++i)
bufferp[i] = (short)i;
}
/**
*
*/
public void set_stop_flag()
{}
}
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