javax.imageio.stream.ImageInputStreamImpl
javax.imageio.stream.ImageOutputStreamImpl
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Java™ Platform Standard Ed. 6 |
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java.lang.Object
public abstract class ImageOutputStreamImpl
An abstract class implementing the ImageOutputStream interface.
This class is designed to reduce the number of methods that must
be implemented by subclasses.
| Field Summary |
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| Fields inherited from class javax.imageio.stream.ImageInputStreamImpl |
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bitOffset, byteOrder, flushedPos, streamPos |
| Constructor Summary | |
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ImageOutputStreamImpl()
Constructs an ImageOutputStreamImpl. |
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| Method Summary | |
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protected void |
flushBits()
If the bit offset is non-zero, forces the remaining bits in the current byte to 0 and advances the stream position by one. |
void |
write(byte[] b)
Writes a sequence of bytes to the stream at the current position. |
abstract void |
write(byte[] b,
int off,
int len)
Writes a sequence of bytes to the stream at the current position. |
abstract void |
write(int b)
Writes a single byte to the stream at the current position. |
void |
writeBit(int bit)
Writes a single bit, given by the least significant bit of the argument, to the stream at the current bit offset within the current byte position. |
void |
writeBits(long bits,
int numBits)
Writes a sequence of bits, given by the numBits
least significant bits of the bits argument in
left-to-right order, to the stream at the current bit offset
within the current byte position. |
void |
writeBoolean(boolean v)
Writes a boolean value to the stream. |
void |
writeByte(int v)
Writes the 8 low-order bits of v to the
stream. |
void |
writeBytes(String s)
Writes a string to the output stream. |
void |
writeChar(int v)
This method is a synonym for |
void |
writeChars(char[] c,
int off,
int len)
Writes a sequence of chars to the stream at the current position. |
void |
writeChars(String s)
Writes a string to the output stream. |
void |
writeDouble(double v)
Writes a double value, which is comprised of four
bytes, to the output stream. |
void |
writeDoubles(double[] d,
int off,
int len)
Writes a sequence of doubles to the stream at the current position. |
void |
writeFloat(float v)
Writes a float value, which is comprised of four
bytes, to the output stream. |
void |
writeFloats(float[] f,
int off,
int len)
Writes a sequence of floats to the stream at the current position. |
void |
writeInt(int v)
Writes the 32 bits of v to the stream. |
void |
writeInts(int[] i,
int off,
int len)
Writes a sequence of ints to the stream at the current position. |
void |
writeLong(long v)
Writes the 64 bits of v to the stream. |
void |
writeLongs(long[] l,
int off,
int len)
Writes a sequence of longs to the stream at the current position. |
void |
writeShort(int v)
Writes the 16 low-order bits of v to the
stream. |
void |
writeShorts(short[] s,
int off,
int len)
Writes a sequence of shorts to the stream at the current position. |
void |
writeUTF(String s)
Writes two bytes of length information to the output stream in network byte order, followed by the modified UTF-8 representation of every character in the string s. |
| Methods inherited from class javax.imageio.stream.ImageInputStreamImpl |
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checkClosed, close, finalize, flush, flushBefore, getBitOffset, getByteOrder, getFlushedPosition, getStreamPosition, isCached, isCachedFile, isCachedMemory, length, mark, read, read, read, readBit, readBits, readBoolean, readByte, readBytes, readChar, readDouble, readFloat, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedInt, readUnsignedShort, readUTF, reset, seek, setBitOffset, setByteOrder, skipBytes, skipBytes |
| Methods inherited from class java.lang.Object |
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clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Methods inherited from interface javax.imageio.stream.ImageOutputStream |
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flushBefore |
| Methods inherited from interface javax.imageio.stream.ImageInputStream |
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close, flush, getBitOffset, getByteOrder, getFlushedPosition, getStreamPosition, isCached, isCachedFile, isCachedMemory, length, mark, read, read, read, readBit, readBits, readBoolean, readByte, readBytes, readChar, readDouble, readFloat, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedInt, readUnsignedShort, readUTF, reset, seek, setBitOffset, setByteOrder, skipBytes, skipBytes |
| Constructor Detail |
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public ImageOutputStreamImpl()
ImageOutputStreamImpl.
| Method Detail |
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public abstract void write(int b)
throws IOException
ImageOutputStreamb are ignored.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write. Implementers can use the
flushBitsImageOutputStreamImpl
write in interface DataOutputwrite in interface ImageOutputStreamb - an int whose lower 8 bits are to be
written.
IOException - if an I/O error occurs.
public void write(byte[] b)
throws IOException
ImageOutputStreamb.length is 0, nothing is written.
The byte b[0] is written first, then the byte
b[1], and so on.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
write in interface DataOutputwrite in interface ImageOutputStreamb - an array of bytes to be written.
IOException - if an I/O error occurs.
public abstract void write(byte[] b,
int off,
int len)
throws IOException
ImageOutputStreamlen is 0, nothing is written.
The byte b[off] is written first, then the byte
b[off + 1], and so on.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write. Implementers can use the
flushBitsImageOutputStreamImpl
write in interface DataOutputwrite in interface ImageOutputStreamb - an array of bytes to be written.off - the start offset in the data.len - the number of bytes to write.
IOException - if an I/O error occurs.
public void writeBoolean(boolean v)
throws IOException
ImageOutputStreamboolean value to the stream. If
v is true, the value (byte)1 is
written; if v is false, the value
(byte)0 is written.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeBoolean in interface DataOutputwriteBoolean in interface ImageOutputStreamv - the boolean to be written.
IOException - if an I/O error occurs.
public void writeByte(int v)
throws IOException
ImageOutputStreamv to the
stream. The 24 high-order bits of v are ignored.
(This means that writeByte does exactly the same
thing as write for an integer argument.)
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeByte in interface DataOutputwriteByte in interface ImageOutputStreamv - an int containing the byte value to be
written.
IOException - if an I/O error occurs.
public void writeShort(int v)
throws IOException
ImageOutputStreamv to the
stream. The 16 high-order bits of v are ignored.
If the stream uses network byte order, the bytes written, in
order, will be:
(byte)((v >> 8) & 0xff) (byte)(v & 0xff)Otherwise, the bytes written will be:
(byte)(v & 0xff) (byte)((v >> 8) & 0xff)
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeShort in interface DataOutputwriteShort in interface ImageOutputStreamv - an int containing the short value to be
written.
IOException - if an I/O error occurs.
public void writeChar(int v)
throws IOException
ImageOutputStreamwriteShort
writeChar in interface DataOutputwriteChar in interface ImageOutputStreamv - an int containing the char (unsigned
short) value to be written.
IOException - if an I/O error occurs.ImageOutputStream.writeShort(int)
public void writeInt(int v)
throws IOException
ImageOutputStreamv to the stream. If the
stream uses network byte order, the bytes written, in order,
will be:
(byte)((v >> 24) & 0xff) (byte)((v >> 16) & 0xff) (byte)((v >> 8) & 0xff) (byte)(v & 0xff)Otheriwse, the bytes written will be:
(byte)(v & 0xff) (byte)((v >> 8) & 0xff) (byte)((v >> 16) & 0xff) (byte)((v >> 24) & 0xff)
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeInt in interface DataOutputwriteInt in interface ImageOutputStreamv - an int containing the value to be
written.
IOException - if an I/O error occurs.
public void writeLong(long v)
throws IOException
ImageOutputStreamv to the stream. If the
stream uses network byte order, the bytes written, in order,
will be:
(byte)((v >> 56) & 0xff) (byte)((v >> 48) & 0xff) (byte)((v >> 40) & 0xff) (byte)((v >> 32) & 0xff) (byte)((v >> 24) & 0xff) (byte)((v >> 16) & 0xff) (byte)((v >> 8) & 0xff) (byte)(v & 0xff)Otherwise, the bytes written will be:
(byte)(v & 0xff) (byte)((v >> 8) & 0xff) (byte)((v >> 16) & 0xff) (byte)((v >> 24) & 0xff) (byte)((v >> 32) & 0xff) (byte)((v >> 40) & 0xff) (byte)((v >> 48) & 0xff) (byte)((v >> 56) & 0xff)
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeLong in interface DataOutputwriteLong in interface ImageOutputStreamv - a long containing the value to be
written.
IOException - if an I/O error occurs.
public void writeFloat(float v)
throws IOException
ImageOutputStreamfloat value, which is comprised of four
bytes, to the output stream. It does this as if it first
converts this float value to an int
in exactly the manner of the Float.floatToIntBits
method and then writes the int value in exactly the manner of
the writeInt method.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeFloat in interface DataOutputwriteFloat in interface ImageOutputStreamv - a float containing the value to be
written.
IOException - if an I/O error occurs.
public void writeDouble(double v)
throws IOException
ImageOutputStreamdouble value, which is comprised of four
bytes, to the output stream. It does this as if it first
converts this double value to an long
in exactly the manner of the
Double.doubleToLongBits method and then writes the
long value in exactly the manner of the writeLong
method.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeDouble in interface DataOutputwriteDouble in interface ImageOutputStreamv - a double containing the value to be
written.
IOException - if an I/O error occurs.
public void writeBytes(String s)
throws IOException
ImageOutputStreams, taken in order, one byte is written
to the output stream. If s is null, a
NullPointerException is thrown.
If s.length is zero, then no bytes are
written. Otherwise, the character s[0] is written
first, then s[1], and so on; the last character
written is s[s.length-1]. For each character, one
byte is written, the low-order byte, in exactly the manner of
the writeByte method. The high-order eight bits of
each character in the string are ignored.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeBytes in interface DataOutputwriteBytes in interface ImageOutputStreams - a String containing the value to be
written.
IOException - if an I/O error occurs.
public void writeChars(String s)
throws IOException
ImageOutputStreams, taken in order, two bytes are
written to the output stream, ordered according to the current
byte order setting. If network byte order is being used, the
high-order byte is written first; the order is reversed
otherwise. If s is null, a
NullPointerException is thrown.
If s.length is zero, then no bytes are
written. Otherwise, the character s[0] is written
first, then s[1], and so on; the last character
written is s[s.length-1].
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeChars in interface DataOutputwriteChars in interface ImageOutputStreams - a String containing the value to be
written.
IOException - if an I/O error occurs.
public void writeUTF(String s)
throws IOException
ImageOutputStreams.
If s is null, a
NullPointerException is thrown. Each character in
the string s is converted to a group of one, two,
or three bytes, depending on the value of the character.
If a character c is in the range
\u0001 through \u007f, it is
represented by one byte:
(byte)c
If a character c is \u0000 or
is in the range \u0080 through
\u07ff, then it is represented by two bytes,
to be written in the order shown:
(byte)(0xc0 | (0x1f & (c >> 6)))
(byte)(0x80 | (0x3f & c))
If a character c is in the range
\u0800 through uffff, then it is
represented by three bytes, to be written in the order shown:
(byte)(0xe0 | (0x0f & (c >> 12)))
(byte)(0x80 | (0x3f & (c >> 6)))
(byte)(0x80 | (0x3f & c))
First, the total number of bytes needed to represent all
the characters of s is calculated. If this number
is larger than 65535, then a
UTFDataFormatException is thrown. Otherwise, this
length is written to the output stream in exactly the manner of
the writeShort method; after this, the one-, two-,
or three-byte representation of each character in the string
s is written.
The current byte order setting is ignored.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
Note: This method should not be used in the implementation of image formats that use standard UTF-8, because the modified UTF-8 used here is incompatible with standard UTF-8.
writeUTF in interface DataOutputwriteUTF in interface ImageOutputStreams - a String containing the value to be
written.
UTFDataFormatException - if the modified UTF-8
representation of s requires more than 65536 bytes.
IOException - if an I/O error occurs.
public void writeShorts(short[] s,
int off,
int len)
throws IOException
ImageOutputStreamlen is 0, nothing is written.
The short s[off] is written first, then the short
s[off + 1], and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeShorts in interface ImageOutputStreams - an array of shorts to be written.off - the start offset in the data.len - the number of shorts to write.
IOException - if an I/O error occurs.
public void writeChars(char[] c,
int off,
int len)
throws IOException
ImageOutputStreamlen is 0, nothing is written.
The char c[off] is written first, then the char
c[off + 1], and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeChars in interface ImageOutputStreamc - an array of chars to be written.off - the start offset in the data.len - the number of chars to write.
IOException - if an I/O error occurs.
public void writeInts(int[] i,
int off,
int len)
throws IOException
ImageOutputStreamlen is 0, nothing is written.
The int i[off] is written first, then the int
i[off + 1], and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeInts in interface ImageOutputStreami - an array of ints to be written.off - the start offset in the data.len - the number of ints to write.
IOException - if an I/O error occurs.
public void writeLongs(long[] l,
int off,
int len)
throws IOException
ImageOutputStreamlen is 0, nothing is written.
The long l[off] is written first, then the long
l[off + 1], and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeLongs in interface ImageOutputStreaml - an array of longs to be written.off - the start offset in the data.len - the number of longs to write.
IOException - if an I/O error occurs.
public void writeFloats(float[] f,
int off,
int len)
throws IOException
ImageOutputStreamlen is 0, nothing is written.
The float f[off] is written first, then the float
f[off + 1], and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeFloats in interface ImageOutputStreamf - an array of floats to be written.off - the start offset in the data.len - the number of floats to write.
IOException - if an I/O error occurs.
public void writeDoubles(double[] d,
int off,
int len)
throws IOException
ImageOutputStreamlen is 0, nothing is written.
The double d[off] is written first, then the double
d[off + 1], and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the remainder of the current byte is padded with 0s and written out first. The bit offset will be 0 after the write.
writeDoubles in interface ImageOutputStreamd - an array of doubless to be written.off - the start offset in the data.len - the number of doubles to write.
IOException - if an I/O error occurs.
public void writeBit(int bit)
throws IOException
ImageOutputStreamIf any bits of a particular byte have never been set at the time the byte is flushed to the destination, those bits will be set to 0 automatically.
writeBit in interface ImageOutputStreambit - an int whose least significant bit
is to be written to the stream.
IOException - if an I/O error occurs.
public void writeBits(long bits,
int numBits)
throws IOException
ImageOutputStreamnumBits
least significant bits of the bits argument in
left-to-right order, to the stream at the current bit offset
within the current byte position. The upper 64 -
numBits bits of the argument are ignored. The bit
offset is advanced by numBits and reduced modulo
8. Note that a bit offset of 0 always indicates the
most-significant bit of the byte, and bytes of bits are written
out in sequence as they are encountered. Thus bit writes are
always effectively in network byte order. The actual stream
byte order setting is ignored.
Bit data may be accumulated in memory indefinitely, until
flushBefore is called. At that time, all bit data
prior to the flushed position will be written.
If any bits of a particular byte have never been set at the time the byte is flushed to the destination, those bits will be set to 0 automatically.
writeBits in interface ImageOutputStreambits - a long containing the bits to be
written, starting with the bit in position numBits -
1 down to the least significant bit.numBits - an int between 0 and 64, inclusive.
IOException - if an I/O error occurs.
protected final void flushBits()
throws IOException
write(int) and
write(byte[], int, int) methods.
IOException - if an I/O error occurs.
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Java™ Platform Standard Ed. 6 |
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