Module org.monte.media

Package org.monte.media.quicktime

Class DataAtomOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

org.monte.media.quicktime.DataAtomOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class DataAtomOutputStream
extends FilterOutputStream

This output stream filter supports common data types used inside of a QuickTime Data Atom.

Author:

Werner Randelshofer

Field Summary

Fields

Modifier and Type	Field	Description
protected static final long	MAC_TIMESTAMP_EPOCH
protected long	written	The number of bytes written to the data output stream so far.

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor	Description
DataAtomOutputStream(OutputStream out)

Method Summary

Modifier and Type	Method	Description
protected void	incCount(int value)	Increases the written counter by the specified value until it reaches Long.MAX_VALUE.
final long	size()	Returns the current value of the counter written, the number of bytes written to this data output stream so far.
void	write(byte[] b, int off, int len)	Writes len bytes from the specified byte array starting at offset off to the underlying output stream.
void	write(int b)	Writes the specified byte (the low eight bits of the argument b) to the underlying output stream.
void	writeBCD2(int v)	Writes a BCD2 to the underlying output stream.
void	writeBCD4(int v)	Writes a BCD4 to the underlying output stream.
final void	writeByte(int v)	Writes out a byte to the underlying output stream as a 1-byte value.
void	writeFixed16D16(double f)	Writes 32-bit fixed-point number divided as 16.16.
void	writeFixed2D30(double f)	Writes 32-bit fixed-point number divided as 2.30.
void	writeFixed8D8(double f)	Writes 32-bit fixed-point number divided as 8.8.
void	writeInt(int v)	Writes an int to the underlying output stream as four bytes, high byte first.
void	writeInt24(int v)
void	writeInts(int[] i, int off, int len)
void	writeInts24(int[] i, int off, int len)
void	writeLong(long v)
void	writeMacTimestamp(Date date)	Writes a 32-bit Mac timestamp (seconds since 1902).
void	writePString(String s)	Writes a Pascal String.
void	writePString(String s, int length)	Writes a Pascal String padded to the specified fixed size in bytes
void	writeShort(int v)	Writes a signed 16 bit integer value.
void	writeShorts(short[] s, int off, int len)
void	writeType(String s)	Writes an Atom Type identifier (4 bytes).
void	writeUInt(long v)	Writes an unsigned 32 bit integer value.
void	writeUShort(int v)

Methods inherited from class java.io.FilterOutputStream

close, flush, write

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

MAC_TIMESTAMP_EPOCH

protected static final long MAC_TIMESTAMP_EPOCH

written

protected long written

The number of bytes written to the data output stream so far. If this counter overflows, it will be wrapped to Integer.MAX_VALUE.

Constructor Details

DataAtomOutputStream

public DataAtomOutputStream(OutputStream out)

Method Details

writeType

public void writeType(String s)
               throws IOException

Writes an Atom Type identifier (4 bytes).

Parameters:

s - A string with a length of 4 characters.

Throws:

IOException

writeByte

public final void writeByte(int v)
                     throws IOException

Writes out a byte to the underlying output stream as a 1-byte value. If no exception is thrown, the counter written is incremented by 1.

Parameters:

v - a byte value to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

• FilterOutputStream.out

write

public void write(byte[] b,
 int off,
 int len)
           throws IOException

Writes len bytes from the specified byte array starting at offset off to the underlying output stream. If no exception is thrown, the counter written is incremented by len.

Overrides:

write in class FilterOutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

IOException - if an I/O error occurs.

See Also:

• FilterOutputStream.out

write

public void write(int b)
           throws IOException

Writes the specified byte (the low eight bits of the argument b) to the underlying output stream. If no exception is thrown, the counter written is incremented by 1.

Implements the write method of OutputStream.

Overrides:

write in class FilterOutputStream

Parameters:

b - the byte to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

• FilterOutputStream.out

writeInt

public void writeInt(int v)
              throws IOException

Writes an int to the underlying output stream as four bytes, high byte first. If no exception is thrown, the counter written is incremented by 4.

Parameters:

v - an int to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

• FilterOutputStream.out

writeUInt

public void writeUInt(long v)
               throws IOException

Writes an unsigned 32 bit integer value.

Parameters:

v - The value

Throws:

IOException

writeShort

public void writeShort(int v)
                throws IOException

Writes a signed 16 bit integer value.

Parameters:

v - The value

Throws:

IOException

writeBCD2

public void writeBCD2(int v)
               throws IOException

Writes a BCD2 to the underlying output stream.

Parameters:

v - an int to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

• FilterOutputStream.out

writeBCD4

public void writeBCD4(int v)
               throws IOException

Writes a BCD4 to the underlying output stream.

Parameters:

v - an int to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

• FilterOutputStream.out

writeMacTimestamp

public void writeMacTimestamp(Date date)
                       throws IOException

Writes a 32-bit Mac timestamp (seconds since 1902).

Parameters:

date -

Throws:

IOException

writeFixed16D16

public void writeFixed16D16(double f)
                     throws IOException

Writes 32-bit fixed-point number divided as 16.16.

Parameters:

f - an int to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

• FilterOutputStream.out

writeFixed2D30

public void writeFixed2D30(double f)
                    throws IOException

Writes 32-bit fixed-point number divided as 2.30.

Parameters:

f - an int to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

• FilterOutputStream.out

writeFixed8D8

public void writeFixed8D8(double f)
                   throws IOException

Writes 32-bit fixed-point number divided as 8.8.

Parameters:

f - an int to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

• FilterOutputStream.out

writePString

public void writePString(String s)
                  throws IOException

Writes a Pascal String.

Parameters:

s -

Throws:

IOException

writePString

public void writePString(String s,
 int length)
                  throws IOException

Writes a Pascal String padded to the specified fixed size in bytes

Parameters:

s -

length - the fixed size in bytes

Throws:

IOException

writeLong

public void writeLong(long v)
               throws IOException

Throws:

IOException

writeUShort

public void writeUShort(int v)
                 throws IOException

Throws:

IOException

incCount

protected void incCount(int value)

Increases the written counter by the specified value until it reaches Long.MAX_VALUE.

writeShorts

public void writeShorts(short[] s,
 int off,
 int len)
                 throws IOException

Throws:

IOException

writeInts

public void writeInts(int[] i,
 int off,
 int len)
               throws IOException

Throws:

IOException

writeInt24

public void writeInt24(int v)
                throws IOException

Throws:

IOException

writeInts24

public void writeInts24(int[] i,
 int off,
 int len)
                 throws IOException

Throws:

IOException

size

public final long size()

Returns the current value of the counter written, the number of bytes written to this data output stream so far. If the counter overflows, it will be wrapped to Integer.MAX_VALUE.

Returns:

the value of the written field.

See Also:

• DataOutputStream.written