Examples of javax.imageio.stream.ImageInputStream.readUnsignedByte()

Class javax.imageio.stream.ImageInputStream

Examples of javax.imageio.stream.ImageInputStream.readUnsignedByte()

javax.imageio.stream.ImageInputStream.readUnsignedByte()
Reads a byte from the stream, and (conceptually) converts it to an int, masks it with 0xff in order to strip off any sign-extension bits, and returns it as a byte value.
Thus, byte values between 0x00 and 0x7f are simply returned as integer values between 0 and 127. Values between 0x80 and 0xff, which normally represent negative bytevalues, will be mapped into positive integers between 128 and 255.
The bit offset within the stream is reset to zero before the read occurs. @return an unsigned byte value from the stream. @exception java.io.EOFException if the end of the stream is reached. @exception IOException if an I/O error occurs.

                    try {
                        reclen = jpeg.readSegmentLength();
                        in.skipBytes(1); //data precision
                        in.skipBytes(2); //height
                        in.skipBytes(2); //width
                        int numComponents = in.readUnsignedByte();
                        if (numComponents == 1) {
                            colorSpace = ColorSpace.getInstance(
                              ColorSpace.CS_GRAY);
                        } else if (numComponents == 3) {
                            colorSpace = ColorSpace.getInstance(

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        i.seek(0);
        h.check(i.readLong() == 8246096929276181351L);
        i.seek(0);
        h.check(i.readShort() == 29296);
        i.seek(0);
        h.check(i.readUnsignedByte() == 114);
        i.seek(0);
        h.check(i.readUnsignedInt() == 1919944055);
        i.seek(0);
        h.check(i.readUnsignedShort() == 29296);

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        i.seek(0);
        h.check(i.readLong() == 7438806032077647986L);
        i.seek(0);
        h.check(i.readShort() == 28786);
        i.seek(0);
        h.check(i.readUnsignedByte() == 114);
        i.seek(0);
        h.check(i.readUnsignedInt() == 1996845170);
        i.seek(0);
        h.check(i.readUnsignedShort() == 28786);

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        i.seek(0);
        h.check(i.readLong() == -7890300535592285273L);
        i.seek(0);
        h.check(i.readShort() == -28032);
        i.seek(0);
        h.check(i.readUnsignedByte() == 146);
        i.seek(0);
        h.check(i.readUnsignedInt() == 2457863543L);
        i.seek(0);
        h.check(i.readUnsignedShort() == 37504);

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        i.seek(0);
        h.check(i.readLong() == -6373734025067659118L);
        i.seek(0);
        h.check(i.readShort() == -32622);
        i.seek(0);
        h.check(i.readUnsignedByte() == 146);
        i.seek(0);
        h.check(i.readUnsignedInt() == 1996849298);
        i.seek(0);
        h.check(i.readUnsignedShort() == 32914);

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                    try {
                        reclen = in.readUnsignedShort();
                        in.skipBytes(1); //data precision
                        in.skipBytes(2); //height
                        in.skipBytes(2); //width
                        int numComponents = in.readUnsignedByte();
                        if (numComponents == 1) {
                            colorSpace = ColorSpace.getInstance(
                              ColorSpace.CS_GRAY);
                        } else if (numComponents == 3) {
                            colorSpace = ColorSpace.getInstance(

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                    try {
                        reclen = jpeg.readSegmentLength();
                        in.skipBytes(1); //data precision
                        in.skipBytes(2); //height
                        in.skipBytes(2); //width
                        int numComponents = in.readUnsignedByte();
                        if (numComponents == 1) {
                            colorSpace = ColorSpace.getInstance(
                              ColorSpace.CS_GRAY);
                        } else if (numComponents == 3) {
                            colorSpace = ColorSpace.getInstance(

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                    if (pos >= length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;
                    }
                    iis.readUnsignedByte();
                    pos++;
                } while (--numReps >= 0);
            } catch (IOException e) {
                e.printStackTrace();
            } finally {

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                    try {
                        reclen = jpeg.readSegmentLength();
                        in.skipBytes(1); //data precision
                        in.skipBytes(2); //height
                        in.skipBytes(2); //width
                        int numComponents = in.readUnsignedByte();
                        if (numComponents == 1) {
                            colorSpace = ColorSpace.getInstance(
                              ColorSpace.CS_GRAY);
                        } else if (numComponents == 3) {
                            colorSpace = ColorSpace.getInstance(

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