javax.sound.sampled.AudioFormat#toString ( )源码实例Demo

下面列出了javax.sound.sampled.AudioFormat#toString ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： tuxguitar 文件： AudioFloatFormatConverter.java

public AudioInputStream getAudioInputStream(AudioFormat targetFormat,
        AudioFloatInputStream sourceStream) {

    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                + sourceStream.getFormat().toString() + " to "
                + targetFormat.toString());
    if (targetFormat.getChannels() != sourceStream.getFormat()
            .getChannels())
        sourceStream = new AudioFloatInputStreamChannelMixer(sourceStream,
                targetFormat.getChannels());
    if (Math.abs(targetFormat.getSampleRate()
            - sourceStream.getFormat().getSampleRate()) > 0.000001)
        sourceStream = new AudioFloatInputStreamResampler(sourceStream,
                targetFormat);
    return new AudioInputStream(new AudioFloatFormatConverterInputStream(
            targetFormat, sourceStream), targetFormat, sourceStream
            .getFrameLength());
}

源代码2 项目： openjdk-jdk8u-backup 文件： AudioFloatFormatConverter.java

public AudioInputStream getAudioInputStream(AudioFormat targetFormat,
        AudioFloatInputStream sourceStream) {

    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                + sourceStream.getFormat().toString() + " to "
                + targetFormat.toString());
    if (targetFormat.getChannels() != sourceStream.getFormat()
            .getChannels())
        sourceStream = new AudioFloatInputStreamChannelMixer(sourceStream,
                targetFormat.getChannels());
    if (Math.abs(targetFormat.getSampleRate()
            - sourceStream.getFormat().getSampleRate()) > 0.000001)
        sourceStream = new AudioFloatInputStreamResampler(sourceStream,
                targetFormat);
    return new AudioInputStream(new AudioFloatFormatConverterInputStream(
            targetFormat, sourceStream), targetFormat, sourceStream
            .getFrameLength());
}

源代码3 项目： Bytecoder 文件： AudioFloatFormatConverter.java

@Override
public AudioInputStream getAudioInputStream(AudioFormat targetFormat,
                                            AudioInputStream sourceStream) {
    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                + sourceStream.getFormat().toString() + " to "
                + targetFormat.toString());
    return getAudioInputStream(targetFormat, AudioFloatInputStream
            .getInputStream(sourceStream));
}

源代码4 项目： dragonwell8_jdk 文件： AudioFloatFormatConverter.java

public AudioInputStream getAudioInputStream(AudioFormat targetFormat,
        AudioInputStream sourceStream) {
    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                + sourceStream.getFormat().toString() + " to "
                + targetFormat.toString());
    return getAudioInputStream(targetFormat, AudioFloatInputStream
            .getInputStream(sourceStream));
}

源代码5 项目： TencentKona-8 文件： AudioFloatFormatConverter.java

public AudioInputStream getAudioInputStream(AudioFormat targetFormat,
        AudioInputStream sourceStream) {
    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                + sourceStream.getFormat().toString() + " to "
                + targetFormat.toString());
    return getAudioInputStream(targetFormat, AudioFloatInputStream
            .getInputStream(sourceStream));
}

源代码6 项目： openjdk-jdk8u 文件： AudioFloatFormatConverter.java

public AudioInputStream getAudioInputStream(AudioFormat targetFormat,
        AudioInputStream sourceStream) {
    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                + sourceStream.getFormat().toString() + " to "
                + targetFormat.toString());
    return getAudioInputStream(targetFormat, AudioFloatInputStream
            .getInputStream(sourceStream));
}

源代码7 项目： Bytecoder 文件： PCMtoPCMCodec.java

@Override
public AudioInputStream getAudioInputStream(AudioFormat targetFormat, AudioInputStream sourceStream){
    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                                           + sourceStream.getFormat().toString() + " to "
                                           + targetFormat.toString());
    return getConvertedStream( targetFormat, sourceStream );
}

源代码8 项目： openjdk-jdk9 文件： AlawCodec.java

@Override
public AudioInputStream getAudioInputStream(AudioFormat targetFormat, AudioInputStream sourceStream){
    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                                           + sourceStream.getFormat().toString() + " to "
                                           + targetFormat.toString());
    return getConvertedStream( targetFormat, sourceStream );
}

源代码9 项目： jdk8u-dev-jdk 文件： AudioFloatFormatConverter.java

public AudioInputStream getAudioInputStream(AudioFormat targetFormat,
        AudioInputStream sourceStream) {
    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                + sourceStream.getFormat().toString() + " to "
                + targetFormat.toString());
    return getAudioInputStream(targetFormat, AudioFloatInputStream
            .getInputStream(sourceStream));
}

源代码10 项目： jdk8u-jdk 文件： UlawCodec.java

UlawCodecStream(AudioInputStream stream, AudioFormat outputFormat) {
    super(stream, outputFormat, AudioSystem.NOT_SPECIFIED);

    AudioFormat inputFormat = stream.getFormat();

    // throw an IllegalArgumentException if not ok
    if (!(isConversionSupported(outputFormat, inputFormat))) {
        throw new IllegalArgumentException("Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
    }

    //$$fb 2002-07-18: fix for 4714846: JavaSound ULAW (8-bit) encoder erroneously depends on endian-ness
    boolean PCMIsBigEndian;

    // determine whether we are encoding or decoding
    if (AudioFormat.Encoding.ULAW.equals(inputFormat.getEncoding())) {
        encode = false;
        encodeFormat = inputFormat;
        decodeFormat = outputFormat;
        PCMIsBigEndian = outputFormat.isBigEndian();
    } else {
        encode = true;
        encodeFormat = outputFormat;
        decodeFormat = inputFormat;
        PCMIsBigEndian = inputFormat.isBigEndian();
        tempBuffer = new byte[tempBufferSize];
    }

    // setup tables according to byte order
    if (PCMIsBigEndian) {
        tabByte1 = ULAW_TABH;
        tabByte2 = ULAW_TABL;
        highByte = 0;
        lowByte  = 1;
    } else {
        tabByte1 = ULAW_TABL;
        tabByte2 = ULAW_TABH;
        highByte = 1;
        lowByte  = 0;
    }

    // set the AudioInputStream length in frames if we know it
    if (stream instanceof AudioInputStream) {
        frameLength = ((AudioInputStream)stream).getFrameLength();
    }
    // set framePos to zero
    framePos = 0;
    frameSize = inputFormat.getFrameSize();
    if (frameSize == AudioSystem.NOT_SPECIFIED) {
        frameSize = 1;
    }
}

源代码11 项目： openjdk-jdk8u 文件： SoftMixingClip.java

public void open(AudioFormat format, byte[] data, int offset, int bufferSize)
        throws LineUnavailableException {
    synchronized (control_mutex) {
        if (isOpen()) {
            throw new IllegalStateException(
                    "Clip is already open with format " + getFormat()
                            + " and frame lengh of " + getFrameLength());
        }
        if (AudioFloatConverter.getConverter(format) == null)
            throw new IllegalArgumentException("Invalid format : "
                    + format.toString());
        if (bufferSize % format.getFrameSize() != 0)
            throw new IllegalArgumentException(
                    "Buffer size does not represent an integral number of sample frames!");

        if (data != null) {
            this.data = Arrays.copyOf(data, data.length);
        }
        this.offset = offset;
        this.bufferSize = bufferSize;
        this.format = format;
        this.framesize = format.getFrameSize();

        loopstart = 0;
        loopend = -1;
        loop_sg = true;

        if (!mixer.isOpen()) {
            mixer.open();
            mixer.implicitOpen = true;
        }

        outputformat = mixer.getFormat();
        out_nrofchannels = outputformat.getChannels();
        in_nrofchannels = format.getChannels();

        open = true;

        mixer.getMainMixer().openLine(this);
    }

}

源代码12 项目： dragonwell8_jdk 文件： SoftMixingClip.java

public void open(AudioFormat format, byte[] data, int offset, int bufferSize)
        throws LineUnavailableException {
    synchronized (control_mutex) {
        if (isOpen()) {
            throw new IllegalStateException(
                    "Clip is already open with format " + getFormat()
                            + " and frame lengh of " + getFrameLength());
        }
        if (AudioFloatConverter.getConverter(format) == null)
            throw new IllegalArgumentException("Invalid format : "
                    + format.toString());
        if (bufferSize % format.getFrameSize() != 0)
            throw new IllegalArgumentException(
                    "Buffer size does not represent an integral number of sample frames!");

        if (data != null) {
            this.data = Arrays.copyOf(data, data.length);
        }
        this.offset = offset;
        this.bufferSize = bufferSize;
        this.format = format;
        this.framesize = format.getFrameSize();

        loopstart = 0;
        loopend = -1;
        loop_sg = true;

        if (!mixer.isOpen()) {
            mixer.open();
            mixer.implicitOpen = true;
        }

        outputformat = mixer.getFormat();
        out_nrofchannels = outputformat.getChannels();
        in_nrofchannels = format.getChannels();

        open = true;

        mixer.getMainMixer().openLine(this);
    }

}

源代码13 项目： dragonwell8_jdk 文件： UlawCodec.java

UlawCodecStream(AudioInputStream stream, AudioFormat outputFormat) {
    super(stream, outputFormat, AudioSystem.NOT_SPECIFIED);

    AudioFormat inputFormat = stream.getFormat();

    // throw an IllegalArgumentException if not ok
    if (!(isConversionSupported(outputFormat, inputFormat))) {
        throw new IllegalArgumentException("Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
    }

    //$$fb 2002-07-18: fix for 4714846: JavaSound ULAW (8-bit) encoder erroneously depends on endian-ness
    boolean PCMIsBigEndian;

    // determine whether we are encoding or decoding
    if (AudioFormat.Encoding.ULAW.equals(inputFormat.getEncoding())) {
        encode = false;
        encodeFormat = inputFormat;
        decodeFormat = outputFormat;
        PCMIsBigEndian = outputFormat.isBigEndian();
    } else {
        encode = true;
        encodeFormat = outputFormat;
        decodeFormat = inputFormat;
        PCMIsBigEndian = inputFormat.isBigEndian();
        tempBuffer = new byte[tempBufferSize];
    }

    // setup tables according to byte order
    if (PCMIsBigEndian) {
        tabByte1 = ULAW_TABH;
        tabByte2 = ULAW_TABL;
        highByte = 0;
        lowByte  = 1;
    } else {
        tabByte1 = ULAW_TABL;
        tabByte2 = ULAW_TABH;
        highByte = 1;
        lowByte  = 0;
    }

    // set the AudioInputStream length in frames if we know it
    if (stream instanceof AudioInputStream) {
        frameLength = ((AudioInputStream)stream).getFrameLength();
    }
    // set framePos to zero
    framePos = 0;
    frameSize = inputFormat.getFrameSize();
    if (frameSize == AudioSystem.NOT_SPECIFIED) {
        frameSize = 1;
    }
}

源代码14 项目： TencentKona-8 文件： AlawCodec.java

AlawCodecStream(AudioInputStream stream, AudioFormat outputFormat) {

            super(stream, outputFormat, -1);

            AudioFormat inputFormat = stream.getFormat();

            // throw an IllegalArgumentException if not ok
            if ( ! (isConversionSupported(outputFormat, inputFormat)) ) {

                throw new IllegalArgumentException("Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
            }

            //$$fb 2002-07-18: fix for 4714846: JavaSound ULAW (8-bit) encoder erroneously depends on endian-ness
            boolean PCMIsBigEndian;

            // determine whether we are encoding or decoding
            if (AudioFormat.Encoding.ALAW.equals(inputFormat.getEncoding())) {
                encode = false;
                encodeFormat = inputFormat;
                decodeFormat = outputFormat;
                PCMIsBigEndian = outputFormat.isBigEndian();
            } else {
                encode = true;
                encodeFormat = outputFormat;
                decodeFormat = inputFormat;
                PCMIsBigEndian = inputFormat.isBigEndian();
                tempBuffer = new byte[tempBufferSize];
            }

            if (PCMIsBigEndian) {
                tabByte1 = ALAW_TABH;
                tabByte2 = ALAW_TABL;
                highByte = 0;
                lowByte  = 1;
            } else {
                tabByte1 = ALAW_TABL;
                tabByte2 = ALAW_TABH;
                highByte = 1;
                lowByte  = 0;
            }

            // set the AudioInputStream length in frames if we know it
            if (stream instanceof AudioInputStream) {
                frameLength = ((AudioInputStream)stream).getFrameLength();
            }

            // set framePos to zero
            framePos = 0;
            frameSize = inputFormat.getFrameSize();
            if( frameSize==AudioSystem.NOT_SPECIFIED ) {
                frameSize=1;
            }
        }

源代码15 项目： openjdk-8 文件： UlawCodec.java

UlawCodecStream(AudioInputStream stream, AudioFormat outputFormat) {
    super(stream, outputFormat, AudioSystem.NOT_SPECIFIED);

    AudioFormat inputFormat = stream.getFormat();

    // throw an IllegalArgumentException if not ok
    if (!(isConversionSupported(outputFormat, inputFormat))) {
        throw new IllegalArgumentException("Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
    }

    //$$fb 2002-07-18: fix for 4714846: JavaSound ULAW (8-bit) encoder erroneously depends on endian-ness
    boolean PCMIsBigEndian;

    // determine whether we are encoding or decoding
    if (AudioFormat.Encoding.ULAW.equals(inputFormat.getEncoding())) {
        encode = false;
        encodeFormat = inputFormat;
        decodeFormat = outputFormat;
        PCMIsBigEndian = outputFormat.isBigEndian();
    } else {
        encode = true;
        encodeFormat = outputFormat;
        decodeFormat = inputFormat;
        PCMIsBigEndian = inputFormat.isBigEndian();
        tempBuffer = new byte[tempBufferSize];
    }

    // setup tables according to byte order
    if (PCMIsBigEndian) {
        tabByte1 = ULAW_TABH;
        tabByte2 = ULAW_TABL;
        highByte = 0;
        lowByte  = 1;
    } else {
        tabByte1 = ULAW_TABL;
        tabByte2 = ULAW_TABH;
        highByte = 1;
        lowByte  = 0;
    }

    // set the AudioInputStream length in frames if we know it
    if (stream instanceof AudioInputStream) {
        frameLength = ((AudioInputStream)stream).getFrameLength();
    }
    // set framePos to zero
    framePos = 0;
    frameSize = inputFormat.getFrameSize();
    if (frameSize == AudioSystem.NOT_SPECIFIED) {
        frameSize = 1;
    }
}

源代码16 项目： jdk8u-jdk 文件： AlawCodec.java

AlawCodecStream(AudioInputStream stream, AudioFormat outputFormat) {

            super(stream, outputFormat, -1);

            AudioFormat inputFormat = stream.getFormat();

            // throw an IllegalArgumentException if not ok
            if ( ! (isConversionSupported(outputFormat, inputFormat)) ) {

                throw new IllegalArgumentException("Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
            }

            //$$fb 2002-07-18: fix for 4714846: JavaSound ULAW (8-bit) encoder erroneously depends on endian-ness
            boolean PCMIsBigEndian;

            // determine whether we are encoding or decoding
            if (AudioFormat.Encoding.ALAW.equals(inputFormat.getEncoding())) {
                encode = false;
                encodeFormat = inputFormat;
                decodeFormat = outputFormat;
                PCMIsBigEndian = outputFormat.isBigEndian();
            } else {
                encode = true;
                encodeFormat = outputFormat;
                decodeFormat = inputFormat;
                PCMIsBigEndian = inputFormat.isBigEndian();
                tempBuffer = new byte[tempBufferSize];
            }

            if (PCMIsBigEndian) {
                tabByte1 = ALAW_TABH;
                tabByte2 = ALAW_TABL;
                highByte = 0;
                lowByte  = 1;
            } else {
                tabByte1 = ALAW_TABL;
                tabByte2 = ALAW_TABH;
                highByte = 1;
                lowByte  = 0;
            }

            // set the AudioInputStream length in frames if we know it
            if (stream instanceof AudioInputStream) {
                frameLength = ((AudioInputStream)stream).getFrameLength();
            }

            // set framePos to zero
            framePos = 0;
            frameSize = inputFormat.getFrameSize();
            if( frameSize==AudioSystem.NOT_SPECIFIED ) {
                frameSize=1;
            }
        }

源代码17 项目： jdk8u60 文件： AlawCodec.java

AlawCodecStream(AudioInputStream stream, AudioFormat outputFormat) {

            super(stream, outputFormat, -1);

            AudioFormat inputFormat = stream.getFormat();

            // throw an IllegalArgumentException if not ok
            if ( ! (isConversionSupported(outputFormat, inputFormat)) ) {

                throw new IllegalArgumentException("Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
            }

            //$$fb 2002-07-18: fix for 4714846: JavaSound ULAW (8-bit) encoder erroneously depends on endian-ness
            boolean PCMIsBigEndian;

            // determine whether we are encoding or decoding
            if (AudioFormat.Encoding.ALAW.equals(inputFormat.getEncoding())) {
                encode = false;
                encodeFormat = inputFormat;
                decodeFormat = outputFormat;
                PCMIsBigEndian = outputFormat.isBigEndian();
            } else {
                encode = true;
                encodeFormat = outputFormat;
                decodeFormat = inputFormat;
                PCMIsBigEndian = inputFormat.isBigEndian();
                tempBuffer = new byte[tempBufferSize];
            }

            if (PCMIsBigEndian) {
                tabByte1 = ALAW_TABH;
                tabByte2 = ALAW_TABL;
                highByte = 0;
                lowByte  = 1;
            } else {
                tabByte1 = ALAW_TABL;
                tabByte2 = ALAW_TABH;
                highByte = 1;
                lowByte  = 0;
            }

            // set the AudioInputStream length in frames if we know it
            if (stream instanceof AudioInputStream) {
                frameLength = ((AudioInputStream)stream).getFrameLength();
            }

            // set framePos to zero
            framePos = 0;
            frameSize = inputFormat.getFrameSize();
            if( frameSize==AudioSystem.NOT_SPECIFIED ) {
                frameSize=1;
            }
        }

源代码18 项目： openjdk-8 文件： PCMtoPCMCodec.java

PCMtoPCMCodecStream(AudioInputStream stream, AudioFormat outputFormat) {

            super(stream, outputFormat, -1);

            int sampleSizeInBits = 0;
            AudioFormat.Encoding inputEncoding = null;
            AudioFormat.Encoding outputEncoding = null;
            boolean inputIsBigEndian;
            boolean outputIsBigEndian;

            AudioFormat inputFormat = stream.getFormat();

            // throw an IllegalArgumentException if not ok
            if ( ! (isConversionSupported(inputFormat, outputFormat)) ) {

                throw new IllegalArgumentException("Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
            }

            inputEncoding = inputFormat.getEncoding();
            outputEncoding = outputFormat.getEncoding();
            inputIsBigEndian = inputFormat.isBigEndian();
            outputIsBigEndian = outputFormat.isBigEndian();
            sampleSizeInBits = inputFormat.getSampleSizeInBits();
            sampleSizeInBytes = sampleSizeInBits/8;

            // determine conversion to perform

            if( sampleSizeInBits==8 ) {
                if( AudioFormat.Encoding.PCM_UNSIGNED.equals(inputEncoding) &&
                    AudioFormat.Encoding.PCM_SIGNED.equals(outputEncoding) ) {
                    conversionType = PCM_SWITCH_SIGNED_8BIT;
                    if(Printer.debug) Printer.debug("PCMtoPCMCodecStream: conversionType = PCM_SWITCH_SIGNED_8BIT");

                } else if( AudioFormat.Encoding.PCM_SIGNED.equals(inputEncoding) &&
                           AudioFormat.Encoding.PCM_UNSIGNED.equals(outputEncoding) ) {
                    conversionType = PCM_SWITCH_SIGNED_8BIT;
                    if(Printer.debug) Printer.debug("PCMtoPCMCodecStream: conversionType = PCM_SWITCH_SIGNED_8BIT");
                }
            } else {

                if( inputEncoding.equals(outputEncoding) && (inputIsBigEndian != outputIsBigEndian) ) {

                    conversionType = PCM_SWITCH_ENDIAN;
                    if(Printer.debug) Printer.debug("PCMtoPCMCodecStream: conversionType = PCM_SWITCH_ENDIAN");


                } else if (AudioFormat.Encoding.PCM_UNSIGNED.equals(inputEncoding) && !inputIsBigEndian &&
                            AudioFormat.Encoding.PCM_SIGNED.equals(outputEncoding) && outputIsBigEndian) {

                    conversionType = PCM_UNSIGNED_LE2SIGNED_BE;
                    if(Printer.debug) Printer.debug("PCMtoPCMCodecStream: conversionType = PCM_UNSIGNED_LE2SIGNED_BE");

                } else if (AudioFormat.Encoding.PCM_SIGNED.equals(inputEncoding) && !inputIsBigEndian &&
                           AudioFormat.Encoding.PCM_UNSIGNED.equals(outputEncoding) && outputIsBigEndian) {

                    conversionType = PCM_SIGNED_LE2UNSIGNED_BE;
                    if(Printer.debug) Printer.debug("PCMtoPCMCodecStream: conversionType = PCM_SIGNED_LE2UNSIGNED_BE");

                } else if (AudioFormat.Encoding.PCM_UNSIGNED.equals(inputEncoding) && inputIsBigEndian &&
                           AudioFormat.Encoding.PCM_SIGNED.equals(outputEncoding) && !outputIsBigEndian) {

                    conversionType = PCM_UNSIGNED_BE2SIGNED_LE;
                    if(Printer.debug) Printer.debug("PCMtoPCMCodecStream: conversionType = PCM_UNSIGNED_BE2SIGNED_LE");

                } else if (AudioFormat.Encoding.PCM_SIGNED.equals(inputEncoding) && inputIsBigEndian &&
                           AudioFormat.Encoding.PCM_UNSIGNED.equals(outputEncoding) && !outputIsBigEndian) {

                    conversionType = PCM_SIGNED_BE2UNSIGNED_LE;
                    if(Printer.debug) Printer.debug("PCMtoPCMCodecStream: conversionType = PCM_SIGNED_BE2UNSIGNED_LE");

                }
            }

            // set the audio stream length in frames if we know it

            frameSize = inputFormat.getFrameSize();
            if( frameSize == AudioSystem.NOT_SPECIFIED ) {
                frameSize=1;
            }
            if( stream instanceof AudioInputStream ) {
                frameLength = stream.getFrameLength();
            } else {
                frameLength = AudioSystem.NOT_SPECIFIED;
            }

            // set framePos to zero
            framePos = 0;

        }

源代码19 项目： jdk8u60 文件： UlawCodec.java

UlawCodecStream(AudioInputStream stream, AudioFormat outputFormat) {
    super(stream, outputFormat, AudioSystem.NOT_SPECIFIED);

    AudioFormat inputFormat = stream.getFormat();

    // throw an IllegalArgumentException if not ok
    if (!(isConversionSupported(outputFormat, inputFormat))) {
        throw new IllegalArgumentException("Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
    }

    //$$fb 2002-07-18: fix for 4714846: JavaSound ULAW (8-bit) encoder erroneously depends on endian-ness
    boolean PCMIsBigEndian;

    // determine whether we are encoding or decoding
    if (AudioFormat.Encoding.ULAW.equals(inputFormat.getEncoding())) {
        encode = false;
        encodeFormat = inputFormat;
        decodeFormat = outputFormat;
        PCMIsBigEndian = outputFormat.isBigEndian();
    } else {
        encode = true;
        encodeFormat = outputFormat;
        decodeFormat = inputFormat;
        PCMIsBigEndian = inputFormat.isBigEndian();
        tempBuffer = new byte[tempBufferSize];
    }

    // setup tables according to byte order
    if (PCMIsBigEndian) {
        tabByte1 = ULAW_TABH;
        tabByte2 = ULAW_TABL;
        highByte = 0;
        lowByte  = 1;
    } else {
        tabByte1 = ULAW_TABL;
        tabByte2 = ULAW_TABH;
        highByte = 1;
        lowByte  = 0;
    }

    // set the AudioInputStream length in frames if we know it
    if (stream instanceof AudioInputStream) {
        frameLength = ((AudioInputStream)stream).getFrameLength();
    }
    // set framePos to zero
    framePos = 0;
    frameSize = inputFormat.getFrameSize();
    if (frameSize == AudioSystem.NOT_SPECIFIED) {
        frameSize = 1;
    }
}

源代码20 项目： openjdk-jdk8u 文件： AlawCodec.java

AlawCodecStream(AudioInputStream stream, AudioFormat outputFormat) {

            super(stream, outputFormat, -1);

            AudioFormat inputFormat = stream.getFormat();

            // throw an IllegalArgumentException if not ok
            if ( ! (isConversionSupported(outputFormat, inputFormat)) ) {

                throw new IllegalArgumentException("Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
            }

            //$$fb 2002-07-18: fix for 4714846: JavaSound ULAW (8-bit) encoder erroneously depends on endian-ness
            boolean PCMIsBigEndian;

            // determine whether we are encoding or decoding
            if (AudioFormat.Encoding.ALAW.equals(inputFormat.getEncoding())) {
                encode = false;
                encodeFormat = inputFormat;
                decodeFormat = outputFormat;
                PCMIsBigEndian = outputFormat.isBigEndian();
            } else {
                encode = true;
                encodeFormat = outputFormat;
                decodeFormat = inputFormat;
                PCMIsBigEndian = inputFormat.isBigEndian();
                tempBuffer = new byte[tempBufferSize];
            }

            if (PCMIsBigEndian) {
                tabByte1 = ALAW_TABH;
                tabByte2 = ALAW_TABL;
                highByte = 0;
                lowByte  = 1;
            } else {
                tabByte1 = ALAW_TABL;
                tabByte2 = ALAW_TABH;
                highByte = 1;
                lowByte  = 0;
            }

            // set the AudioInputStream length in frames if we know it
            if (stream instanceof AudioInputStream) {
                frameLength = ((AudioInputStream)stream).getFrameLength();
            }

            // set framePos to zero
            framePos = 0;
            frameSize = inputFormat.getFrameSize();
            if( frameSize==AudioSystem.NOT_SPECIFIED ) {
                frameSize=1;
            }
        }

方法所在类

javax.sound.sampled.AudioFormat