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

Class javax.imageio.stream.ImageInputStream

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

javax.imageio.stream.ImageInputStream.mark()
Marks a position in the stream to be returned to by a subsequent call to reset. Unlike a standard InputStream, all ImageInputStreams support marking. Additionally, calls to mark and reset may be nested arbitrarily.
Unlike the mark methods declared by the Reader and InputStream interfaces, no readLimit parameter is used. An arbitrary amount of data may be read following the call to mark.
The bit position used by the readBits method is saved and restored by each pair of calls to mark and reset.
Note that it is valid for an ImageReader to call flushBefore as part of a read operation. Therefore, if an application calls mark prior to passing that stream to an ImageReader, the application should not assume that the marked position will remain valid after the read operation has completed.

            final Context ictx = (Context)ctx;
            final ImageInputStream iis = ictx.inputStream;
            final int length = ictx.length;
            int pos = 0;
            try {
                iis.mark();
                do {
                    if (pos >= length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;

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            try {
                iis.mark();
                do {
                    if (pos >= length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;
                    }
                    iis.read();
                    pos++;
                } while (--numReps >= 0);

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            final byte[] buf = ictx.byteBuf;
            final int scanlineStride = ictx.scanlineStride;
            final int length = ictx.length;
            int pos = 0;
            try {
                iis.mark();
                do {
                    if (pos + scanlineStride > length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;

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            try {
                iis.mark();
                do {
                    if (pos + scanlineStride > length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;
                    }
                    iis.read(buf);
                    pos += scanlineStride;
                } while (--numReps >= 0);

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            final byte[] buf = ictx.byteBuf;
            final int scanlineStride = ictx.scanlineStride;
            final int length = ictx.length;
            int pos = 0;
            try {
                iis.mark();
                do {
                    if (pos + scanlineStride > length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;

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            try {
                iis.mark();
                do {
                    if (pos + scanlineStride > length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;
                    }
                    iis.readFully(buf);
                    pos += scanlineStride;
                } while (--numReps >= 0);

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            final Context ictx = (Context)ctx;
            final ImageInputStream iis = ictx.inputStream;
            final int length = ictx.length * 8;
            int pos = 0;
            try {
                iis.mark();
                do {
                    if (pos >= length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;

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            try {
                iis.mark();
                do {
                    if (pos >= length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;
                    }
                    iis.readBit();
                    pos++;
                } while (--numReps >= 0);

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            final Context ictx = (Context)ctx;
            final ImageInputStream iis = ictx.inputStream;
            final int length = ictx.length;
            int pos = 0;
            try {
                iis.mark();
                do {
                    if (pos >= length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;

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            try {
                iis.mark();
                do {
                    if (pos >= length) {
                        iis.reset();
                        iis.mark();
                        pos = 0;
                    }
                    iis.readByte();
                    pos++;
                } while (--numReps >= 0);

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