下面列出了javax.imageio.stream.ImageInputStream#reset ( ) 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。
public boolean canDecodeInput(Object input) throws IOException {
if (!(input instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)input;
byte[] b = new byte[8];
stream.mark();
stream.readFully(b);
stream.reset();
return (b[0] == (byte)137 &&
b[1] == (byte)80 &&
b[2] == (byte)78 &&
b[3] == (byte)71 &&
b[4] == (byte)13 &&
b[5] == (byte)10 &&
b[6] == (byte)26 &&
b[7] == (byte)10);
}
public boolean canDecodeInput(Object input) throws IOException {
if (!(input instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)input;
byte[] b = new byte[8];
stream.mark();
stream.readFully(b);
stream.reset();
return (b[0] == (byte)137 &&
b[1] == (byte)80 &&
b[2] == (byte)78 &&
b[3] == (byte)71 &&
b[4] == (byte)13 &&
b[5] == (byte)10 &&
b[6] == (byte)26 &&
b[7] == (byte)10);
}
public boolean canDecodeInput(Object input) throws IOException {
if (!(input instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)input;
byte[] b = new byte[8];
stream.mark();
stream.readFully(b);
stream.reset();
return (b[0] == (byte)137 &&
b[1] == (byte)80 &&
b[2] == (byte)78 &&
b[3] == (byte)71 &&
b[4] == (byte)13 &&
b[5] == (byte)10 &&
b[6] == (byte)26 &&
b[7] == (byte)10);
}
public boolean canDecodeInput(Object input) throws IOException {
if (!(input instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)input;
byte[] b = new byte[8];
stream.mark();
stream.readFully(b);
stream.reset();
return (b[0] == (byte)137 &&
b[1] == (byte)80 &&
b[2] == (byte)78 &&
b[3] == (byte)71 &&
b[4] == (byte)13 &&
b[5] == (byte)10 &&
b[6] == (byte)26 &&
b[7] == (byte)10);
}
public boolean canDecodeInput(Object source) throws IOException {
if (!(source instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)source;
byte[] b = new byte[2];
stream.mark();
stream.readFully(b);
stream.reset();
return (b[0] == 0x42) && (b[1] == 0x4d);
}
BufferedImage getThumbnail(ImageInputStream iis,
JPEGImageReader reader)
throws IOException {
iis.mark();
iis.seek(streamPos);
JPEGImageReader thumbReader = new JPEGImageReader(null);
thumbReader.setInput(iis);
thumbReader.addIIOReadProgressListener
(new ThumbnailReadListener(reader));
BufferedImage ret = thumbReader.read(0, null);
thumbReader.dispose();
iis.reset();
return ret;
}
@Override
public boolean canDecodeInput( Object source ) throws IOException {
if ( !( source instanceof ImageInputStream ) ) {
return false;
}
ImageInputStream stream = ( ImageInputStream ) source;
byte[] b = new byte[ 4 ];
ByteOrder oldByteOrder = stream.getByteOrder();
stream.mark();
stream.setByteOrder( ByteOrder.LITTLE_ENDIAN );
try {
stream.readFully( b );
if ( !Arrays.equals( b, RIFF ) ) {
return false;
}
long chunkLength = stream.readUnsignedInt();
long streamLength = stream.length();
if ( streamLength != -1 && streamLength != chunkLength + 8 ) {
return false;
}
stream.readFully( b );
if ( !Arrays.equals( b, WEBP ) ) {
return false;
}
stream.readFully( b );
if ( !Arrays.equals( b, VP8_ ) && !Arrays.equals( b, VP8X ) ) {
return false;
}
} finally {
stream.setByteOrder( oldByteOrder );
stream.reset();
}
return true;
}
public boolean canDecodeInput(Object source) throws IOException {
if (!(source instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)source;
byte[] b = new byte[2];
stream.mark();
stream.readFully(b);
stream.reset();
return (b[0] == 0x42) && (b[1] == 0x4d);
}
BufferedImage getThumbnail(ImageInputStream iis,
JPEGImageReader reader)
throws IOException {
iis.mark();
iis.seek(streamPos);
DataBufferByte buffer = new DataBufferByte(getLength());
readByteBuffer(iis,
buffer.getData(),
reader,
1.0F,
0.0F);
iis.reset();
WritableRaster raster =
Raster.createInterleavedRaster(buffer,
thumbWidth,
thumbHeight,
thumbWidth*3,
3,
new int [] {0, 1, 2},
null);
ColorModel cm = new ComponentColorModel(JPEG.JCS.sRGB,
false,
false,
ColorModel.OPAQUE,
DataBuffer.TYPE_BYTE);
return new BufferedImage(cm,
raster,
false,
null);
}
BufferedImage getThumbnail(ImageInputStream iis,
JPEGImageReader reader)
throws IOException {
iis.mark();
iis.seek(streamPos);
JPEGImageReader thumbReader = new JPEGImageReader(null);
thumbReader.setInput(iis);
thumbReader.addIIOReadProgressListener
(new ThumbnailReadListener(reader));
BufferedImage ret = thumbReader.read(0, null);
thumbReader.dispose();
iis.reset();
return ret;
}
BufferedImage getThumbnail(ImageInputStream iis,
JPEGImageReader reader)
throws IOException {
iis.mark();
iis.seek(streamPos);
JPEGImageReader thumbReader = new JPEGImageReader(null);
thumbReader.setInput(iis);
thumbReader.addIIOReadProgressListener
(new ThumbnailReadListener(reader));
BufferedImage ret = thumbReader.read(0, null);
thumbReader.dispose();
iis.reset();
return ret;
}
public boolean canDecodeInput(Object source) throws IOException {
if (!(source instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)source;
byte[] b = new byte[2];
stream.mark();
stream.readFully(b);
stream.reset();
return (b[0] == 0x42) && (b[1] == 0x4d);
}
BufferedImage getThumbnail(ImageInputStream iis,
JPEGImageReader reader)
throws IOException {
iis.mark();
iis.seek(streamPos);
JPEGImageReader thumbReader = new JPEGImageReader(null);
thumbReader.setInput(iis);
thumbReader.addIIOReadProgressListener
(new ThumbnailReadListener(reader));
BufferedImage ret = thumbReader.read(0, null);
thumbReader.dispose();
iis.reset();
return ret;
}
BufferedImage getThumbnail(ImageInputStream iis,
JPEGImageReader reader)
throws IOException {
iis.mark();
iis.seek(streamPos);
JPEGImageReader thumbReader = new JPEGImageReader(null);
thumbReader.setInput(iis);
thumbReader.addIIOReadProgressListener
(new ThumbnailReadListener(reader));
BufferedImage ret = thumbReader.read(0, null);
thumbReader.dispose();
iis.reset();
return ret;
}
BufferedImage getThumbnail(ImageInputStream iis,
JPEGImageReader reader)
throws IOException {
iis.mark();
iis.seek(streamPos);
DataBufferByte buffer = new DataBufferByte(getLength());
readByteBuffer(iis,
buffer.getData(),
reader,
1.0F,
0.0F);
iis.reset();
WritableRaster raster =
Raster.createInterleavedRaster(buffer,
thumbWidth,
thumbHeight,
thumbWidth*3,
3,
new int [] {0, 1, 2},
null);
ColorModel cm = new ComponentColorModel(JPEG.JCS.sRGB,
false,
false,
ColorModel.OPAQUE,
DataBuffer.TYPE_BYTE);
return new BufferedImage(cm,
raster,
false,
null);
}
public boolean canDecodeInput(Object source) throws IOException {
if (!(source instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)source;
byte[] b = new byte[2];
stream.mark();
stream.readFully(b);
stream.reset();
return (b[0] == 0x42) && (b[1] == 0x4d);
}
public boolean canDecodeInput(Object input) throws IOException {
if (!(input instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)input;
byte[] b = new byte[6];
stream.mark();
stream.readFully(b);
stream.reset();
return b[0] == 'G' && b[1] == 'I' && b[2] == 'F' && b[3] == '8' &&
(b[4] == '7' || b[4] == '9') && b[5] == 'a';
}
public boolean canDecodeInput(Object source) throws IOException {
if (!(source instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)source;
stream.mark();
try {
int type = stream.readByte(); // TypeField
int fixHeaderField = stream.readByte();
// check WBMP "header"
if (type != 0 || fixHeaderField != 0) {
// while WBMP reader does not support ext WBMP headers
return false;
}
int width = ReaderUtil.readMultiByteInteger(stream);
int height = ReaderUtil.readMultiByteInteger(stream);
// check image dimension
if (width <= 0 || height <= 0) {
return false;
}
long dataLength = stream.length();
if (dataLength == -1) {
// We can't verify that amount of data in the stream
// corresponds to image dimension because we do not know
// the length of the data stream.
// Assuming that wbmp image are used for mobile devices,
// let's introduce an upper limit for image dimension.
// In case if exact amount of raster data is unknown,
// let's reject images with dimension above the limit.
return (width < MAX_WBMP_WIDTH) && (height < MAX_WBMP_HEIGHT);
}
dataLength -= stream.getStreamPosition();
long scanSize = (width / 8) + ((width % 8) == 0 ? 0 : 1);
return (dataLength == scanSize * height);
} finally {
stream.reset();
}
}
public boolean canDecodeInput(Object source) throws IOException {
if (!(source instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)source;
stream.mark();
try {
int type = stream.readByte(); // TypeField
int fixHeaderField = stream.readByte();
// check WBMP "header"
if (type != 0 || fixHeaderField != 0) {
// while WBMP reader does not support ext WBMP headers
return false;
}
int width = ReaderUtil.readMultiByteInteger(stream);
int height = ReaderUtil.readMultiByteInteger(stream);
// check image dimension
if (width <= 0 || height <= 0) {
return false;
}
long dataLength = stream.length();
if (dataLength == -1) {
// We can't verify that amount of data in the stream
// corresponds to image dimension because we do not know
// the length of the data stream.
// Assuming that wbmp image are used for mobile devices,
// let's introduce an upper limit for image dimension.
// In case if exact amount of raster data is unknown,
// let's reject images with dimension above the limit.
return (width < MAX_WBMP_WIDTH) && (height < MAX_WBMP_HEIGHT);
}
dataLength -= stream.getStreamPosition();
long scanSize = (width / 8) + ((width % 8) == 0 ? 0 : 1);
return (dataLength == scanSize * height);
} finally {
stream.reset();
}
}
public boolean canDecodeInput(Object source) throws IOException {
if (!(source instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)source;
stream.mark();
try {
int type = stream.readByte(); // TypeField
int fixHeaderField = stream.readByte();
// check WBMP "header"
if (type != 0 || fixHeaderField != 0) {
// while WBMP reader does not support ext WBMP headers
return false;
}
int width = ReaderUtil.readMultiByteInteger(stream);
int height = ReaderUtil.readMultiByteInteger(stream);
// check image dimension
if (width <= 0 || height <= 0) {
return false;
}
long dataLength = stream.length();
if (dataLength == -1) {
// We can't verify that amount of data in the stream
// corresponds to image dimension because we do not know
// the length of the data stream.
// Assuming that wbmp image are used for mobile devices,
// let's introduce an upper limit for image dimension.
// In case if exact amount of raster data is unknown,
// let's reject images with dimension above the limit.
return (width < MAX_WBMP_WIDTH) && (height < MAX_WBMP_HEIGHT);
}
dataLength -= stream.getStreamPosition();
long scanSize = (width / 8) + ((width % 8) == 0 ? 0 : 1);
return (dataLength == scanSize * height);
} finally {
stream.reset();
}
}