Java Code Examples for javax.imageio.stream.ImageInputStream#read()

The following examples show how to use javax.imageio.stream.ImageInputStream#read() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: JFIFMarkerSegment.java From jdk8u-dev-jdk with GNU General Public License v2.0

6 votes

void readByteBuffer(ImageInputStream iis,
                    byte [] data,
                    JPEGImageReader reader,
                    float workPortion,
                    float workOffset) throws IOException {
    int progInterval = Math.max((int)(data.length/20/workPortion),
                                1);
    for (int offset = 0;
         offset < data.length;) {
        int len = Math.min(progInterval, data.length-offset);
        iis.read(data, offset, len);
        offset += progInterval;
        float percentDone = ((float) offset* 100)
            / data.length
            * workPortion + workOffset;
        if (percentDone > 100.0F) {
            percentDone = 100.0F;
        }
        reader.thumbnailProgress (percentDone);
    }
}

Example 2

Source File: JFIFMarkerSegment.java From openjdk-8 with GNU General Public License v2.0

6 votes

void readByteBuffer(ImageInputStream iis,
                    byte [] data,
                    JPEGImageReader reader,
                    float workPortion,
                    float workOffset) throws IOException {
    int progInterval = Math.max((int)(data.length/20/workPortion),
                                1);
    for (int offset = 0;
         offset < data.length;) {
        int len = Math.min(progInterval, data.length-offset);
        iis.read(data, offset, len);
        offset += progInterval;
        float percentDone = ((float) offset* 100)
            / data.length
            * workPortion + workOffset;
        if (percentDone > 100.0F) {
            percentDone = 100.0F;
        }
        reader.thumbnailProgress (percentDone);
    }
}

Example 3

Source File: JFIFMarkerSegment.java From jdk8u-jdk with GNU General Public License v2.0

6 votes

void readByteBuffer(ImageInputStream iis,
                    byte [] data,
                    JPEGImageReader reader,
                    float workPortion,
                    float workOffset) throws IOException {
    int progInterval = Math.max((int)(data.length/20/workPortion),
                                1);
    for (int offset = 0;
         offset < data.length;) {
        int len = Math.min(progInterval, data.length-offset);
        iis.read(data, offset, len);
        offset += progInterval;
        float percentDone = ((float) offset* 100)
            / data.length
            * workPortion + workOffset;
        if (percentDone > 100.0F) {
            percentDone = 100.0F;
        }
        reader.thumbnailProgress (percentDone);
    }
}

Example 4

Source File: JPEGImageReaderSpi.java From JDKSourceCode1.8 with MIT License

6 votes

public boolean canDecodeInput(Object source) throws IOException {
    if (!(source instanceof ImageInputStream)) {
        return false;
    }
    ImageInputStream iis = (ImageInputStream) source;
    iis.mark();
    // If the first two bytes are a JPEG SOI marker, it's probably
    // a JPEG file.  If they aren't, it definitely isn't a JPEG file.
    int byte1 = iis.read();
    int byte2 = iis.read();
    iis.reset();
    if ((byte1 == 0xFF) && (byte2 == JPEG.SOI)) {
        return true;
    }
    return false;
}

Example 5

Source File: JPEGImageReaderSpi.java From Bytecoder with Apache License 2.0

6 votes

public boolean canDecodeInput(Object source) throws IOException {
    if (!(source instanceof ImageInputStream)) {
        return false;
    }
    ImageInputStream iis = (ImageInputStream) source;
    iis.mark();
    // If the first two bytes are a JPEG SOI marker, it's probably
    // a JPEG file.  If they aren't, it definitely isn't a JPEG file.
    int byte1 = iis.read();
    int byte2 = iis.read();
    iis.reset();
    if ((byte1 == 0xFF) && (byte2 == JPEG.SOI)) {
        return true;
    }
    return false;
}

Example 6

Source File: JFIFMarkerSegment.java From openjdk-jdk9 with GNU General Public License v2.0

6 votes

void readByteBuffer(ImageInputStream iis,
                    byte [] data,
                    JPEGImageReader reader,
                    float workPortion,
                    float workOffset) throws IOException {
    int progInterval = Math.max((int)(data.length/20/workPortion),
                                1);
    for (int offset = 0;
         offset < data.length;) {
        int len = Math.min(progInterval, data.length-offset);
        iis.read(data, offset, len);
        offset += progInterval;
        float percentDone = ((float) offset* 100)
            / data.length
            * workPortion + workOffset;
        if (percentDone > 100.0F) {
            percentDone = 100.0F;
        }
        reader.thumbnailProgress (percentDone);
    }
}

Example 7

Source File: JFIFMarkerSegment.java From TencentKona-8 with GNU General Public License v2.0

6 votes

void readByteBuffer(ImageInputStream iis,
                    byte [] data,
                    JPEGImageReader reader,
                    float workPortion,
                    float workOffset) throws IOException {
    int progInterval = Math.max((int)(data.length/20/workPortion),
                                1);
    for (int offset = 0;
         offset < data.length;) {
        int len = Math.min(progInterval, data.length-offset);
        iis.read(data, offset, len);
        offset += progInterval;
        float percentDone = ((float) offset* 100)
            / data.length
            * workPortion + workOffset;
        if (percentDone > 100.0F) {
            percentDone = 100.0F;
        }
        reader.thumbnailProgress (percentDone);
    }
}

Example 8

Source File: JFIFMarkerSegment.java From Bytecoder with Apache License 2.0

6 votes

void readByteBuffer(ImageInputStream iis,
                    byte [] data,
                    JPEGImageReader reader,
                    float workPortion,
                    float workOffset) throws IOException {
    int progInterval = Math.max((int)(data.length/20/workPortion),
                                1);
    for (int offset = 0;
         offset < data.length;) {
        int len = Math.min(progInterval, data.length-offset);
        iis.read(data, offset, len);
        offset += progInterval;
        float percentDone = ((float) offset* 100)
            / data.length
            * workPortion + workOffset;
        if (percentDone > 100.0F) {
            percentDone = 100.0F;
        }
        reader.thumbnailProgress (percentDone);
    }
}

Example 9

Source File: JFIFMarkerSegment.java From jdk8u_jdk with GNU General Public License v2.0

6 votes

void readByteBuffer(ImageInputStream iis,
                    byte [] data,
                    JPEGImageReader reader,
                    float workPortion,
                    float workOffset) throws IOException {
    int progInterval = Math.max((int)(data.length/20/workPortion),
                                1);
    for (int offset = 0;
         offset < data.length;) {
        int len = Math.min(progInterval, data.length-offset);
        iis.read(data, offset, len);
        offset += progInterval;
        float percentDone = ((float) offset* 100)
            / data.length
            * workPortion + workOffset;
        if (percentDone > 100.0F) {
            percentDone = 100.0F;
        }
        reader.thumbnailProgress (percentDone);
    }
}

Example 10

Source File: JPEGImageReaderSpi.java From dragonwell8_jdk with GNU General Public License v2.0

6 votes

public boolean canDecodeInput(Object source) throws IOException {
    if (!(source instanceof ImageInputStream)) {
        return false;
    }
    ImageInputStream iis = (ImageInputStream) source;
    iis.mark();
    // If the first two bytes are a JPEG SOI marker, it's probably
    // a JPEG file.  If they aren't, it definitely isn't a JPEG file.
    int byte1 = iis.read();
    int byte2 = iis.read();
    iis.reset();
    if ((byte1 == 0xFF) && (byte2 == JPEG.SOI)) {
        return true;
    }
    return false;
}

Example 11

Source File: JPEGImageReaderSpi.java From jdk8u-dev-jdk with GNU General Public License v2.0

6 votes

public boolean canDecodeInput(Object source) throws IOException {
    if (!(source instanceof ImageInputStream)) {
        return false;
    }
    ImageInputStream iis = (ImageInputStream) source;
    iis.mark();
    // If the first two bytes are a JPEG SOI marker, it's probably
    // a JPEG file.  If they aren't, it definitely isn't a JPEG file.
    int byte1 = iis.read();
    int byte2 = iis.read();
    iis.reset();
    if ((byte1 == 0xFF) && (byte2 == JPEG.SOI)) {
        return true;
    }
    return false;
}

Example 12

Source File: JPEGImageReaderSpi.java From jdk8u-jdk with GNU General Public License v2.0

6 votes

public boolean canDecodeInput(Object source) throws IOException {
    if (!(source instanceof ImageInputStream)) {
        return false;
    }
    ImageInputStream iis = (ImageInputStream) source;
    iis.mark();
    // If the first two bytes are a JPEG SOI marker, it's probably
    // a JPEG file.  If they aren't, it definitely isn't a JPEG file.
    int byte1 = iis.read();
    int byte2 = iis.read();
    iis.reset();
    if ((byte1 == 0xFF) && (byte2 == JPEG.SOI)) {
        return true;
    }
    return false;
}

Example 13

Source File: JFIFMarkerSegment.java From TencentKona-8 with GNU General Public License v2.0

5 votes

BufferedImage getThumbnail(ImageInputStream iis,
                           JPEGImageReader reader)
    throws IOException {
    iis.mark();
    iis.seek(streamPos);
    // read the palette
    byte [] palette = new byte [PALETTE_SIZE];
    float palettePart = ((float) PALETTE_SIZE) / getLength();
    readByteBuffer(iis,
                   palette,
                   reader,
                   palettePart,
                   0.0F);
    DataBufferByte buffer = new DataBufferByte(thumbWidth*thumbHeight);
    readByteBuffer(iis,
                   buffer.getData(),
                   reader,
                   1.0F-palettePart,
                   palettePart);
    iis.read();
    iis.reset();

    IndexColorModel cm = new IndexColorModel(8,
                                             256,
                                             palette,
                                             0,
                                             false);
    SampleModel sm = cm.createCompatibleSampleModel(thumbWidth,
                                                    thumbHeight);
    WritableRaster raster =
        Raster.createWritableRaster(sm, buffer, null);
    return new BufferedImage(cm,
                             raster,
                             false,
                             null);
}

Example 14

Source File: JFIFMarkerSegment.java From openjdk-8-source with GNU General Public License v2.0

5 votes

BufferedImage getThumbnail(ImageInputStream iis,
                           JPEGImageReader reader)
    throws IOException {
    iis.mark();
    iis.seek(streamPos);
    // read the palette
    byte [] palette = new byte [PALETTE_SIZE];
    float palettePart = ((float) PALETTE_SIZE) / getLength();
    readByteBuffer(iis,
                   palette,
                   reader,
                   palettePart,
                   0.0F);
    DataBufferByte buffer = new DataBufferByte(thumbWidth*thumbHeight);
    readByteBuffer(iis,
                   buffer.getData(),
                   reader,
                   1.0F-palettePart,
                   palettePart);
    iis.read();
    iis.reset();

    IndexColorModel cm = new IndexColorModel(8,
                                             256,
                                             palette,
                                             0,
                                             false);
    SampleModel sm = cm.createCompatibleSampleModel(thumbWidth,
                                                    thumbHeight);
    WritableRaster raster =
        Raster.createWritableRaster(sm, buffer, null);
    return new BufferedImage(cm,
                             raster,
                             false,
                             null);
}

Example 15

Source File: WebPReader.java From j-webp with Apache License 2.0

5 votes

private void readData() throws IOException {
  if ( fData != null ) {
    return;
  }

  ImageInputStream input = ( ImageInputStream ) getInput();
  long length = input.length();
  if ( length > Integer.MAX_VALUE ) {
    throw new IOException( "Cannot read image of size " + length );
  }

  if ( input.getStreamPosition() != 0L ) {
    if ( isSeekForwardOnly() ) {
      throw new IOException();
    }
    else {
      input.seek( 0 );
    }
  }

  byte[] data;
  if ( length > 0 ) {
    data = new byte[ ( int ) length ];
    input.readFully( data );
  }
  else {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    byte[] buffer = new byte[ 4096 ];
    int bytesRead;
    while ( ( bytesRead = input.read( buffer ) ) != -1 ) {
      out.write( buffer, 0, bytesRead );
    }
    out.close();
    data = out.toByteArray();
  }
  fData = data;
}

Example 16

Source File: JFIFMarkerSegment.java From dragonwell8_jdk with GNU General Public License v2.0

5 votes

BufferedImage getThumbnail(ImageInputStream iis,
                           JPEGImageReader reader)
    throws IOException {
    iis.mark();
    iis.seek(streamPos);
    // read the palette
    byte [] palette = new byte [PALETTE_SIZE];
    float palettePart = ((float) PALETTE_SIZE) / getLength();
    readByteBuffer(iis,
                   palette,
                   reader,
                   palettePart,
                   0.0F);
    DataBufferByte buffer = new DataBufferByte(thumbWidth*thumbHeight);
    readByteBuffer(iis,
                   buffer.getData(),
                   reader,
                   1.0F-palettePart,
                   palettePart);
    iis.read();
    iis.reset();

    IndexColorModel cm = new IndexColorModel(8,
                                             256,
                                             palette,
                                             0,
                                             false);
    SampleModel sm = cm.createCompatibleSampleModel(thumbWidth,
                                                    thumbHeight);
    WritableRaster raster =
        Raster.createWritableRaster(sm, buffer, null);
    return new BufferedImage(cm,
                             raster,
                             false,
                             null);
}

Example 17

Source File: JFIFMarkerSegment.java From jdk8u_jdk with GNU General Public License v2.0

5 votes

BufferedImage getThumbnail(ImageInputStream iis,
                           JPEGImageReader reader)
    throws IOException {
    iis.mark();
    iis.seek(streamPos);
    // read the palette
    byte [] palette = new byte [PALETTE_SIZE];
    float palettePart = ((float) PALETTE_SIZE) / getLength();
    readByteBuffer(iis,
                   palette,
                   reader,
                   palettePart,
                   0.0F);
    DataBufferByte buffer = new DataBufferByte(thumbWidth*thumbHeight);
    readByteBuffer(iis,
                   buffer.getData(),
                   reader,
                   1.0F-palettePart,
                   palettePart);
    iis.read();
    iis.reset();

    IndexColorModel cm = new IndexColorModel(8,
                                             256,
                                             palette,
                                             0,
                                             false);
    SampleModel sm = cm.createCompatibleSampleModel(thumbWidth,
                                                    thumbHeight);
    WritableRaster raster =
        Raster.createWritableRaster(sm, buffer, null);
    return new BufferedImage(cm,
                             raster,
                             false,
                             null);
}

Example 18

Source File: JFIFMarkerSegment.java From jdk1.8-source-analysis with Apache License 2.0

5 votes

BufferedImage getThumbnail(ImageInputStream iis,
                           JPEGImageReader reader)
    throws IOException {
    iis.mark();
    iis.seek(streamPos);
    // read the palette
    byte [] palette = new byte [PALETTE_SIZE];
    float palettePart = ((float) PALETTE_SIZE) / getLength();
    readByteBuffer(iis,
                   palette,
                   reader,
                   palettePart,
                   0.0F);
    DataBufferByte buffer = new DataBufferByte(thumbWidth*thumbHeight);
    readByteBuffer(iis,
                   buffer.getData(),
                   reader,
                   1.0F-palettePart,
                   palettePart);
    iis.read();
    iis.reset();

    IndexColorModel cm = new IndexColorModel(8,
                                             256,
                                             palette,
                                             0,
                                             false);
    SampleModel sm = cm.createCompatibleSampleModel(thumbWidth,
                                                    thumbHeight);
    WritableRaster raster =
        Raster.createWritableRaster(sm, buffer, null);
    return new BufferedImage(cm,
                             raster,
                             false,
                             null);
}

Example 19

Source File: DCTFilter.java From sambox with Apache License 2.0

4 votes

private int getAdobeTransformByBruteForce(ImageInputStream iis) throws IOException
{
    int a = 0;
    iis.seek(0);
    int by;
    while ((by = iis.read()) != -1)
    {
        if (ADOBE.charAt(a) == by)
        {
            ++a;
            if (a != ADOBE.length())
            {
                continue;
            }
            // match
            a = 0;
            long afterAdobePos = iis.getStreamPosition();
            iis.seek(iis.getStreamPosition() - 9);
            int tag = iis.readUnsignedShort();
            if (tag != 0xFFEE)
            {
                iis.seek(afterAdobePos);
                continue;
            }
            int len = iis.readUnsignedShort();
            if (len >= POS_TRANSFORM + 1)
            {
                byte[] app14 = new byte[Math.max(len, POS_TRANSFORM + 1)];
                if (iis.read(app14) >= POS_TRANSFORM + 1)
                {
                    return app14[POS_TRANSFORM];
                }
            }
        }
        else
        {
            a = 0;
        }
    }
    return 0;
}

Example 20

Source File: DCTFilter.java From gcs with Mozilla Public License 2.0

4 votes

private int getAdobeTransformByBruteForce(ImageInputStream iis) throws IOException
{
    int a = 0;
    iis.seek(0);
    int by;
    while ((by = iis.read()) != -1)
    {
        if (ADOBE.charAt(a) == by)
        {
            ++a;
            if (a != ADOBE.length())
            {
                continue;
            }
            // match
            a = 0;
            long afterAdobePos = iis.getStreamPosition();
            iis.seek(iis.getStreamPosition() - 9);
            int tag = iis.readUnsignedShort();
            if (tag != 0xFFEE)
            {
                iis.seek(afterAdobePos);
                continue;
            }
            int len = iis.readUnsignedShort();
            if (len >= POS_TRANSFORM + 1)
            {
                byte[] app14 = new byte[Math.max(len, POS_TRANSFORM + 1)];
                if (iis.read(app14) >= POS_TRANSFORM + 1)
                {
                    return app14[POS_TRANSFORM];
                }
            }
        }
        else
        {
            a = 0;
        }
    }
    return 0;
}