public abstract class ImageOutputStreamImpl extends ImageInputStreamImplimplements ImageOutputStream
ImageOutputStream interface. This class is designed to reduce the number of methods that must be implemented by subclasses.
bitOffset, byteOrder, flushedPos, streamPos| Constructor and Description |
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ImageOutputStreamImpl()
Constructs an
ImageOutputStreamImpl.
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| Modifier and Type | Method and Description |
|---|---|
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.
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void |
write(byte[] b)
Writes a sequence of bytes to the stream at the current position.
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abstract void |
write(byte[] b, int off, int len)
Writes a sequence of bytes to the stream at the current position.
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abstract void |
write(int b)
Writes a single byte to the stream at the current position.
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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.
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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.
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void |
writeBoolean(boolean v)
Writes a
boolean value to the stream.
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void |
writeByte(int v)
Writes the 8 low-order bits of
v to the stream.
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void |
writeBytes(String
Writes a string to the output stream.
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void |
writeChar(int v)
This method is a synonym for
writeShort.
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void |
writeChars(char[] c, int off, int len)
Writes a sequence of chars to the stream at the current position.
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void |
writeChars(String
Writes a string to the output stream.
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void |
writeDouble(double v)
Writes a
double value, which is comprised of four bytes, to the output stream.
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void |
writeDoubles(double[] d, int off, int len)
Writes a sequence of doubles to the stream at the current position.
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void |
writeFloat(float v)
Writes a
float value, which is comprised of four bytes, to the output stream.
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void |
writeFloats(float[] f, int off, int len)
Writes a sequence of floats to the stream at the current position.
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void |
writeInt(int v)
Writes the 32 bits of
v to the stream.
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void |
writeInts(int[] i, int off, int len)
Writes a sequence of ints to the stream at the current position.
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void |
writeLong(long v)
Writes the 64 bits of
v to the stream.
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void |
writeLongs(long[] l, int off, int len)
Writes a sequence of longs to the stream at the current position.
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void |
writeShort(int v)
Writes the 16 low-order bits of
v to the stream.
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void |
writeShorts(short[] s, int off, int len)
Writes a sequence of shorts to the stream at the current position.
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void |
writeUTF(String
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.
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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, skipBytesclone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitflushBeforeclose, 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, skipBytespublic ImageOutputStreamImpl()
ImageOutputStreamImpl.
public abstract void write(int b)
throws IOException
ImageOutputStream
b 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 flushBits method of ImageOutputStreamImpl to guarantee this.
write in interface
DataOutput
write in interface
ImageOutputStream
b - an
int whose lower 8 bits are to be written.
IOException - if an I/O error occurs.
public void write(byte[] b)
throws IOException
ImageOutputStream
b.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
DataOutput
write in interface
ImageOutputStream
b - 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
ImageOutputStream
len 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 flushBits method of ImageOutputStreamImpl to guarantee this.
write in interface
DataOutput
write in interface
ImageOutputStream
b - 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
ImageOutputStream
boolean 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
DataOutput
writeBoolean in interface
ImageOutputStream
v - the
boolean to be written.
IOException - if an I/O error occurs.
public void writeByte(int v)
throws IOException
ImageOutputStream
v 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
DataOutput
writeByte in interface
ImageOutputStream
v - an
int containing the byte value to be written.
IOException - if an I/O error occurs.
public void writeShort(int v)
throws IOException
ImageOutputStream
v 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
DataOutput
writeShort in interface
ImageOutputStream
v - an
int containing the short value to be written.
IOException - if an I/O error occurs.
public void writeChar(int v)
throws IOException
ImageOutputStream
writeShort.
writeChar in interface
DataOutput
writeChar in interface
ImageOutputStream
v - 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
ImageOutputStream
v 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
DataOutput
writeInt in interface
ImageOutputStream
v - an
int containing the value to be written.
IOException - if an I/O error occurs.
public void writeLong(long v)
throws IOException
ImageOutputStream
v 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
DataOutput
writeLong in interface
ImageOutputStream
v - a
long containing the value to be written.
IOException - if an I/O error occurs.
public void writeFloat(float v)
throws IOException
ImageOutputStream
float 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
DataOutput
writeFloat in interface
ImageOutputStream
v - a
float containing the value to be written.
IOException - if an I/O error occurs.
public void writeDouble(double v)
throws IOException
ImageOutputStream
double 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
DataOutput
writeDouble in interface
ImageOutputStream
v - a
double containing the value to be written.
IOException - if an I/O error occurs.
public void writeBytes(Strings) throws IOException
ImageOutputStream
s, 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
DataOutput
writeBytes in interface
ImageOutputStream
s - a
String containing the value to be written.
IOException - if an I/O error occurs.
public void writeChars(Strings) throws IOException
ImageOutputStream
s, 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
DataOutput
writeChars in interface
ImageOutputStream
s - a
String containing the value to be written.
IOException - if an I/O error occurs.
public void writeUTF(Strings) throws IOException
ImageOutputStream
s. 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
DataOutput
writeUTF in interface
ImageOutputStream
s - 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
ImageOutputStream
len 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
ImageOutputStream
s - 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
ImageOutputStream
len 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
ImageOutputStream
c - 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
ImageOutputStream
len 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
ImageOutputStream
i - 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
ImageOutputStream
len 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
ImageOutputStream
l - 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
ImageOutputStream
len 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
ImageOutputStream
f - 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
ImageOutputStream
len 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
ImageOutputStream
d - 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
ImageOutputStream
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.
writeBit in interface
ImageOutputStream
bit - 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
ImageOutputStream
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. 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
ImageOutputStream
bits - 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.