/*
* 21.04.2004 Original verion. davagin@udm.ru.
*-----------------------------------------------------------------------
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*----------------------------------------------------------------------
*/
package davaguine.jmac.info;
import davaguine.jmac.tools.ByteArrayReader;
import davaguine.jmac.tools.ByteArrayWriter;
import davaguine.jmac.tools.File;
import davaguine.jmac.tools.JMACException;
import java.io.EOFException;
import java.io.IOException;
/**
* Author: Dmitry Vaguine
* Date: 04.03.2004
* Time: 14:51:31
*/
public class APEHeaderNew {
public int nCompressionLevel; // the compression level (unsigned short)
public int nFormatFlags; // any format flags (for future use) (unsigned short)
public long nBlocksPerFrame; // the number of audio blocks in one frame (unsigned int)
public long nFinalFrameBlocks; // the number of audio blocks in the final frame (unsigned int)
public long nTotalFrames; // the total number of frames (unsigned int)
public int nBitsPerSample; // the bits per sample (typically 16) (unsigned short)
public int nChannels; // the number of channels (1 or 2) (unsigned short)
public long nSampleRate; // the sample rate (typically 44100) (unsigned int)
public final static int APE_HEADER_BYTES = 24;
public static APEHeaderNew read(final File file) throws IOException {
try {
APEHeaderNew header = new APEHeaderNew();
final ByteArrayReader reader = new ByteArrayReader(file, APE_HEADER_BYTES);
header.nCompressionLevel = reader.readUnsignedShort();
header.nFormatFlags = reader.readUnsignedShort();
header.nBlocksPerFrame = reader.readUnsignedInt();
header.nFinalFrameBlocks = reader.readUnsignedInt();
header.nTotalFrames = reader.readUnsignedInt();
header.nBitsPerSample = reader.readUnsignedShort();
header.nChannels = reader.readUnsignedShort();
header.nSampleRate = reader.readUnsignedInt();
return header;
} catch (EOFException e) {
throw new JMACException("Unsupported Format");
}
}
public void write(ByteArrayWriter writer) {
writer.writeUnsignedShort(nCompressionLevel);
writer.writeUnsignedShort(nFormatFlags);
writer.writeUnsignedInt(nBlocksPerFrame);
writer.writeUnsignedInt(nFinalFrameBlocks);
writer.writeUnsignedInt(nTotalFrames);
writer.writeUnsignedShort(nBitsPerSample);
writer.writeUnsignedShort(nChannels);
writer.writeUnsignedInt(nSampleRate);
}
}