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Jindra Petřík
2014-05-10 20:50:57 +02:00
parent 1b851e66a8
commit 199a4d0c2b
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libsrc/avi/src/org/monte/media/AudioFormatKeys.java Normal file
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/*
* @(#)AudioFormatKeys.java
*
* Copyright (c) 2011 Werner Randelshofer, Goldau, Switzerland.
* All rights reserved.
*
* You may not use, copy or modify this file, except in compliance onlyWith the
* license agreement you entered into onlyWith Werner Randelshofer.
* For details see accompanying license terms.
*/
package org.monte.media;
import org.monte.media.math.Rational;
import java.nio.ByteOrder;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioFormat.Encoding;
/**
* Defines common format keys for audio media.
*
* @author Werner Randelshofer
* @version $Id: AudioFormatKeys.java 299 2013-01-03 07:40:18Z werner $
*/
public class AudioFormatKeys extends FormatKeys {
// Standard video EncodingKey strings for use onlyWith FormatKey.Encoding.
/**
* Specifies SignedKey, linear PCM data.
*/
public static final String ENCODING_PCM_SIGNED = javax.sound.sampled.AudioFormat.Encoding.PCM_SIGNED.toString();
/**
* Specifies unsigned, linear PCM data.
*/
public static final String ENCODING_PCM_UNSIGNED = javax.sound.sampled.AudioFormat.Encoding.PCM_UNSIGNED.toString();
/**
* Specifies u-law encoded data.
*/
public static final String ENCODING_ULAW = javax.sound.sampled.AudioFormat.Encoding.ULAW.toString();
/**
* Specifies a-law encoded data.
*/
public static final String ENCODING_ALAW = javax.sound.sampled.AudioFormat.Encoding.ALAW.toString();
/**
* AVI PCM encoding.
*/
public static final String ENCODING_AVI_PCM = "\u0000\u0000\u0000\u0001";
/**
* QuickTime 16-bit big endian signed PCM encoding.
*/
public static final String ENCODING_QUICKTIME_TWOS_PCM = "twos";
/**
* QuickTime 16-bit little endian signed PCM encoding.
*/
public static final String ENCODING_QUICKTIME_SOWT_PCM = "sowt";
/**
* QuickTime 24-bit big endian signed PCM encoding.
*/
public static final String ENCODING_QUICKTIME_IN24_PCM = "in24";
/**
* QuickTime 32-bit big endian signed PCM encoding.
*/
public static final String ENCODING_QUICKTIME_IN32_PCM = "in32";
/**
* QuickTime 8-bit unsigned PCM encoding.
*/
public static final String ENCODING_QUICKTIME_RAW_PCM = "raw ";
/**
* Specifies MP3 encoded data.
*/
public static final String ENCODING_MP3 = "MP3";
/**
* The sample size in bits.
*/
public final static FormatKey<Integer> SampleSizeInBitsKey = new FormatKey<Integer>("sampleSizeInBits", Integer.class);
/**
* The numer of ChannelsKey.
*/
public final static FormatKey<Integer> ChannelsKey = new FormatKey<Integer>("channels", Integer.class);
/**
* The size of a frame.
*/
public final static FormatKey<Integer> FrameSizeKey = new FormatKey<Integer>("frameSize", Integer.class);
/**
* The compressor name.
*/
public final static FormatKey<ByteOrder> ByteOrderKey = new FormatKey<ByteOrder>("byteOrder", ByteOrder.class);
/**
* The number of frames per second.
*/
public final static FormatKey<Rational> SampleRateKey = new FormatKey<Rational>("sampleRate", Rational.class);
/**
* Whether values are signed.
*/
public final static FormatKey<Boolean> SignedKey = new FormatKey<Boolean>("signed", Boolean.class);
/**
* Whether silence is encoded as -128 instead of 0.
*/
public final static FormatKey<Boolean> SilenceBugKey = new FormatKey<Boolean>("silenceBug", Boolean.class);
public static Format fromAudioFormat(javax.sound.sampled.AudioFormat fmt) {
return new Format(
MediaTypeKey, MediaType.AUDIO,
EncodingKey, fmt.getEncoding().toString(),
SampleRateKey, Rational.valueOf(fmt.getSampleRate()),
SampleSizeInBitsKey, fmt.getSampleSizeInBits(),
ChannelsKey, fmt.getChannels(),
FrameSizeKey, fmt.getFrameSize(),
FrameRateKey, Rational.valueOf(fmt.getFrameRate()),
ByteOrderKey, fmt.isBigEndian() ? ByteOrder.BIG_ENDIAN : ByteOrder.LITTLE_ENDIAN,
SignedKey, AudioFormat.Encoding.PCM_SIGNED.equals(fmt.getEncoding())//,
//
);
}
public static javax.sound.sampled.AudioFormat toAudioFormat(Format fmt) {
// We always use PCM_SIGNED or PCM_UNSIGNED
return new javax.sound.sampled.AudioFormat(
!fmt.containsKey(SignedKey) || fmt.get(SignedKey) ? Encoding.PCM_SIGNED : Encoding.PCM_UNSIGNED,
fmt.get(SampleRateKey).floatValue(),
fmt.get(SampleSizeInBitsKey, 16),
fmt.get(ChannelsKey, 1),
fmt.containsKey(FrameSizeKey) ? fmt.get(FrameSizeKey) : (fmt.get(SampleSizeInBitsKey, 16) + 7) / 8 * fmt.get(ChannelsKey, 1),
fmt.containsKey(FrameRateKey) ? fmt.get(FrameRateKey).floatValue() : fmt.get(SampleRateKey).floatValue(),
fmt.containsKey(ByteOrderKey) ? fmt.get(ByteOrderKey) == ByteOrder.BIG_ENDIAN : true);
}
}