Class Media

java.lang.Object

javaforce.media.Media

public class Media
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	debug

Constructor Summary

Constructors

Constructor	Description
Media()

Method Summary

Modifier and Type	Method	Description
boolean	append(String file)	Open existing file to writing.
boolean	close()	If file was created or appended an index table is written at end of file for fast seeking.
boolean	create(String file, int[] streamIDs)	Create new file for writing.
boolean	create(String file, int[] streamIDs, CodecInfo info)	Create new file for writing.
int	getAllFrameCount()	Return # of all frames.
CodecInfo	getCodecInfo()	Returns codec info that describes the media (optional).
int	getKeyFrameCount()	Return # of key frames.
int[]	getStreamIDs()	Return stream IDs.
long	getTimeBase()	Returns timestamp of first frame.
static void	main(String[] args)	Unit testing.
boolean	open(String file)	Open existing file for reading.
Packet	readFrame()	Read next Frame.
boolean	seekFrame(int frame)	Seek to frame #.
boolean	seekTime(long ts)	Seek to frame closest to timestamp.
boolean	writeFrame(int stream, byte[] data, int offset, int length, long ts, boolean keyFrame)	Write next frame.

Methods inherited from class Object

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

Field Details

debug

public static boolean debug

Constructor Details

Media

public Media()

Method Details

open

public boolean open(String file)

Open existing file for reading.

create

public boolean create(String file,
 int[] streamIDs,
 CodecInfo info)

Create new file for writing. If file exists it is truncated. CodecInfo should contain information about audio/video format.

create

public boolean create(String file,
 int[] streamIDs)

Create new file for writing. If file exists it is truncated.

append

public boolean append(String file)

Open existing file to writing.

close

public boolean close()

If file was created or appended an index table is written at end of file for fast seeking.

getStreamIDs

public int[] getStreamIDs()

Return stream IDs.

getKeyFrameCount

public int getKeyFrameCount()

Return # of key frames.

getAllFrameCount

public int getAllFrameCount()

Return # of all frames.

getTimeBase

public long getTimeBase()

Returns timestamp of first frame.

getCodecInfo

public CodecInfo getCodecInfo()

Returns codec info that describes the media (optional).

seekFrame

public boolean seekFrame(int frame)

Seek to frame #. Seeking is not supported on files opened for writing (create() or append()).

seekTime

public boolean seekTime(long ts)

Seek to frame closest to timestamp.

readFrame

public Packet readFrame()

Read next Frame. Do not modify fields in Packet.

Returns:

frame = next frame or null at end of file or error

writeFrame

public boolean writeFrame(int stream,
 byte[] data,
 int offset,
 int length,
 long ts,
 boolean keyFrame)

Write next frame.

Parameters:

stream - = stream index

data - = raw codec data

offset - = offset into data

length - = length of data

ts - = timestamp of frame

keyFrame - = is frame a key frame?

main

public static void main(String[] args)

Unit testing.