com.smaxe.uv.stream
Class MediaData

java.lang.Object
  com.smaxe.uv.stream.MediaData

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

MediaDataByteArray

public abstract class MediaData
extends java.lang.Object
implements java.io.Serializable

MediaData - media (audio/video/flv) data.

Author:

Andrei Sochirca

See Also:

Serialized Form

Field Summary

int	rtime Media frame relative time (since the last frame time) in milliseconds.
long	timestamp Media frame stream timestamp (since the stream start timestamp) in milliseconds.

Constructor Summary

MediaData()
Constructor.

MediaData(int rtime)
Constructor.

MediaData(int rtime, long timestamp)
Constructor.

Method Summary

boolean	hasAbsoluteTimestamp() Checks if rtime defines absolute stream timestamp (rather than 'relative' time).
abstract java.io.InputStream	read() Returns InputStream to read media data.
abstract int	size() Returns media data size (including tag byte).
abstract int	tag() Returns media data tag.
java.lang.String	toString()
abstract int	write(java.io.OutputStream os, int offset, int length) Writes video data to the os.

Methods inherited from class java.lang.Object

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

Field Detail

rtime

public int rtime

Media frame relative time (since the last frame time) in milliseconds.

timestamp

public long timestamp

Media frame stream timestamp (since the stream start timestamp) in milliseconds.

Constructor Detail

MediaData

public MediaData()

Constructor.

MediaData

public MediaData(int rtime)

Constructor.

Parameters:

rtime - relative time (in milliseconds)

MediaData

public MediaData(int rtime,
                 long timestamp)

Constructor.

Parameters:

rtime - relative time (in milliseconds)

timestamp - stream timestamp (in milliseconds)

Method Detail

hasAbsoluteTimestamp

public boolean hasAbsoluteTimestamp()

Checks if rtime defines absolute stream timestamp (rather than 'relative' time).

Note:
- Method returns true if 'rtime' equals 'timestamp'.

Returns:

true if 'rtime' defines absolute stream timestamp; otherwise false

size

public abstract int size()

Returns media data size (including tag byte).

Returns:

media data size

tag

public abstract int tag()

Returns media data tag.

Note: Tag is the first byte of the media data. It contains media frame info, like frame type, codec, etc.

Returns:

video tag

read

public abstract java.io.InputStream read()
                                  throws java.io.IOException

Returns InputStream to read media data.

Returns:

video data

Throws:

java.io.IOException - if an I/O exception occurred

write

public abstract int write(java.io.OutputStream os,
                          int offset,
                          int length)
                   throws java.io.IOException

Writes video data to the os.

Parameters:

os - output stream to fill with media data

os -

offset - data offset

length - number of bytes to write

Returns:

number of written bytes

Throws:

java.io.IOException - if an I/O exception occurred

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object