org.monte.media.avi
Class AbstractAVIStream

java.lang.Object
  org.monte.media.avi.AbstractAVIStream

Direct Known Subclasses:

AVIInputStream, AVIOutputStream

public abstract class AbstractAVIStream
extends java.lang.Object

This is the base class for low-level AVI stream IO.

Version:

$Id: AbstractAVIStream.java 160 2012-01-28 17:07:17Z werner $

Author:

Werner Randelshofer

Nested Class Summary

protected class	AbstractAVIStream.AudioTrack The format of a video track is defined in a "strf" chunk, which contains a WAVEFORMATEX struct.
static class	AbstractAVIStream.AVIMediaType Supported media types.
protected class	AbstractAVIStream.Chunk Chunk base class.
protected class	AbstractAVIStream.CompositeChunk A CompositeChunk contains an ordered list of Chunks.
protected class	AbstractAVIStream.DataChunk Data Chunk.
protected class	AbstractAVIStream.FixedSizeDataChunk A DataChunk with a fixed size.
protected static class	AbstractAVIStream.MainHeader Holds information about the entire movie.
protected class	AbstractAVIStream.MidiTrack
protected static class	AbstractAVIStream.Sample AVI stores media data in sample chunks.
protected class	AbstractAVIStream.TextTrack
protected class	AbstractAVIStream.Track Represents a track (or "stream") in an AVI file.
protected class	AbstractAVIStream.VideoTrack Represents a video track in an AVI file.

Field Summary

protected static int	AVI_ID Chunk IDs.
static int	AVIH_FLAG_COPYRIGHTED
static int	AVIH_FLAG_HAS_INDEX Indicates the AVI file has an index.
static int	AVIH_FLAG_IS_INTERLEAVED Indicates the AVI file is interleaved.
static int	AVIH_FLAG_MUST_USE_INDEX Indicates that application should use the index, rather than the physical ordering of the chunks in the file, to determine the order of presentation of the data.
static int	AVIH_FLAG_TRUST_CK_TYPE ??
static int	AVIH_FLAG_WAS_CAPTURE_FILE // Indicates the AVI file is a specially allocated file used for capturing real-time video.
protected static int	AVIH_ID
protected static int	HDRL_ID
protected static int	IDX1_ID
protected static int	LIST_ID
protected static int	MOVI_ID
protected javax.imageio.stream.ImageOutputStream	out Underlying output stream.
protected static int	REC_ID
protected static int	STRD_ID
protected long	streamOffset The offset in the underlying ImageOutputStream.
protected static int	STRF_ID
static int	STRH_FLAG_DISABLED Indicates this stream should not be enabled by default.
static int	STRH_FLAG_VIDEO_PALETTE_CHANGES Indicates this video stream contains palette changes.
protected static int	STRH_ID
protected static int	STRL_ID
protected static int	STRN_ID
protected java.util.ArrayList<AbstractAVIStream.Track>	tracks The list of tracks in the file.

Constructor Summary

AbstractAVIStream()

Method Summary

protected long	getRelativeStreamPosition() Gets the position relative to the beginning of the QuickTime stream.
protected static java.lang.String	intToType(int id)
protected static boolean	isFlagSet(int flag, int mask) Returns true, if the specified mask is set on the flag.
protected void	seekRelative(long newPosition) Seeks relative to the beginning of the AVI stream.
protected static int	typeToInt(java.lang.String str)

Methods inherited from class java.lang.Object

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

Field Detail

AVI_ID

protected static final int AVI_ID

Chunk IDs.

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Constant Field Values

LIST_ID

protected static final int LIST_ID

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Constant Field Values

MOVI_ID

protected static final int MOVI_ID

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Constant Field Values

HDRL_ID

protected static final int HDRL_ID

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Constant Field Values

AVIH_ID

protected static final int AVIH_ID

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Constant Field Values

STRL_ID

protected static final int STRL_ID

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Constant Field Values

STRH_ID

protected static final int STRH_ID

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Constant Field Values

STRN_ID

protected static final int STRN_ID

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Constant Field Values

STRF_ID

protected static final int STRF_ID

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Constant Field Values

STRD_ID

protected static final int STRD_ID

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Constant Field Values

IDX1_ID

protected static final int IDX1_ID

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Constant Field Values

REC_ID

protected static final int REC_ID

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Constant Field Values

AVIH_FLAG_HAS_INDEX

public static final int AVIH_FLAG_HAS_INDEX

Indicates the AVI file has an index.

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Constant Field Values

AVIH_FLAG_MUST_USE_INDEX

public static final int AVIH_FLAG_MUST_USE_INDEX

Indicates that application should use the index, rather than the physical ordering of the chunks in the file, to determine the order of presentation of the data. For example, this flag could be used to create a list of frames for editing.

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Constant Field Values

AVIH_FLAG_IS_INTERLEAVED

public static final int AVIH_FLAG_IS_INTERLEAVED

Indicates the AVI file is interleaved.

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Constant Field Values

AVIH_FLAG_TRUST_CK_TYPE

public static final int AVIH_FLAG_TRUST_CK_TYPE

??

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Constant Field Values

AVIH_FLAG_WAS_CAPTURE_FILE

public static final int AVIH_FLAG_WAS_CAPTURE_FILE

// Indicates the AVI file is a specially allocated file used for capturing real-time video. Applications should warn the user before writing over a file with this flag set because the user probably defragmented this file.

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Constant Field Values

AVIH_FLAG_COPYRIGHTED

public static final int AVIH_FLAG_COPYRIGHTED

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Constant Field Values

STRH_FLAG_DISABLED

public static final int STRH_FLAG_DISABLED

Indicates this stream should not be enabled by default.

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Constant Field Values

STRH_FLAG_VIDEO_PALETTE_CHANGES

public static final int STRH_FLAG_VIDEO_PALETTE_CHANGES

Indicates this video stream contains palette changes. This flag warns the playback software that it will need to animate the palette.

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Constant Field Values

out

protected javax.imageio.stream.ImageOutputStream out

Underlying output stream.

streamOffset

protected long streamOffset

The offset in the underlying ImageOutputStream. Normally this is 0 unless the underlying stream already contained data when it was passed to the constructor.

tracks

protected java.util.ArrayList<AbstractAVIStream.Track> tracks

The list of tracks in the file.

Constructor Detail

AbstractAVIStream

public AbstractAVIStream()

Method Detail

getRelativeStreamPosition

protected long getRelativeStreamPosition()
                                  throws java.io.IOException

Gets the position relative to the beginning of the QuickTime stream.

Usually this value is equal to the stream position of the underlying ImageOutputStream, but can be larger if the underlying stream already contained data.

Returns:

The relative stream position.

Throws:

java.io.IOException

seekRelative

protected void seekRelative(long newPosition)
                     throws java.io.IOException

Seeks relative to the beginning of the AVI stream.

Usually this equal to seeking in the underlying ImageOutputStream, but can be different if the underlying stream already contained data.

Throws:

java.io.IOException

typeToInt

protected static int typeToInt(java.lang.String str)

intToType

protected static java.lang.String intToType(int id)

isFlagSet

protected static boolean isFlagSet(int flag,
                                   int mask)

Returns true, if the specified mask is set on the flag.