net.sourceforge.jaad.mp4.od

Class DecoderConfigDescriptor

java.lang.Object

net.sourceforge.jaad.mp4.od.Descriptor

net.sourceforge.jaad.mp4.od.DecoderConfigDescriptor

public class DecoderConfigDescriptor
extends Descriptor

The DecoderConfigDescriptor provides information about the decoder type and the required decoder resources needed for the associates elementary stream. This is needed at the receiver to determine whether it is able to decode the elementary stream. A stream type identifies the category of the stream while the optional decoder specific information contains stream specific information for the set up of the decoder in a stream specific format that is opaque to this layer.

Field Summary

Fields inherited from class net.sourceforge.jaad.mp4.od.Descriptor

size, start, type, TYPE_DECODER_CONFIG_DESCRIPTOR, TYPE_DECODER_SPECIFIC_INFO, TYPE_ES_DESCRIPTOR, TYPE_ES_ID_INC, TYPE_INITIAL_OBJECT_DESCRIPTOR, TYPE_MP4_INITIAL_OBJECT_DESCRIPTOR, TYPE_OBJECT_DESCRIPTOR, TYPE_SL_CONFIG_DESCRIPTOR

Constructor Summary

Constructors

Constructor and Description
DecoderConfigDescriptor()

Method Summary

Methods

Modifier and Type	Method and Description
long	getAverageBitRate() The average bitrate of the elementary stream.
int	getDecodingBufferSize() The size of the decoding buffer for this elementary stream in byte.
long	getMaxBitRate() The maximum bitrate of this elementary stream in any time window of one second duration.
int	getObjectProfile() An indication for the object profile (or scene description profile if streamType==scene description stream), that needs to be supported by the decoder for this elementary stream as per the following table.
int	getStreamType() The stream type conveys the type of this elementary stream as per the following table: ValueDescription 0x00reserved for ISO use 0x01ObjectDescriptorStream 0x02ClockReferenceStream 0x03SceneDescriptionStream 0x04VisualStream 0x05AudioStream 0x06MPEG-7 Stream 0x07-0x09reserved for ISO use 0x0AObjectContentInfoStream 0x0B-0x1Freserved for ISO use 0x20-0x3Fuser private
boolean	isUpstream() Indicates if this stream is used for upstream information.

Methods inherited from class net.sourceforge.jaad.mp4.od.Descriptor

createDescriptor, getChildren, getSize, getType, readChildren

Methods inherited from class java.lang.Object

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

Constructor Detail

DecoderConfigDescriptor

public DecoderConfigDescriptor()

Method Detail

getObjectProfile

public int getObjectProfile()

An indication for the object profile (or scene description profile if streamType==scene description stream), that needs to be supported by the decoder for this elementary stream as per the following table. For streamType==object descriptor stream the value 0xFF ('no profile specified') shall be used. 0x000x010x020x030x040x050x06-0x1F0x200x210x220x230x240x250x260x270x280x290x2A-0x3F0x400x410x420x430x440x450x460x470x480x490x4A0x4B0x4C-0x5F0x600x610x620x630x640x650x660x670x680x690x6A-0xBF0xC0-0xFE0xFF

Value	Description
	Reserved for ISO use
	ISO 14496-1:Systems Simple Scene Description
	ISO 14496-1:Systems 2D Scene Description
	ISO 14496-1:Systems VRML Scene Description
	ISO 14496-1:Systems Audio Scene Description
	ISO 14496-1:Systems Complete Scene Description
	reserved for ISO use
	ISO 14496-2:Visual Simple Profile
	ISO 14496-2:Visual Core Profile
	ISO 14496-2:Visual Main Profile
	ISO 14496-2:Visual Simple Scalable Profile
	ISO 14496-2:Visual 12 Bit
	ISO 14496-2:Visual Basic Anim. 2D Texture
	ISO 14496-2:Visual Anim. 2D Mesh
	ISO 14496-2:Visual Simple Face
	ISO 14496-2:Visual Simple Scalable Texture
	ISO 14496-2:Visual Core Scalable Texture
	reserved for ISO use
	ISO 14496-3:Audio AAC Main
	ISO 14496-3:Audio AAC LC
	ISO 14496-3:Audio T/F
	ISO 14496-3:Audio T/F Main Scalable
	ISO 14496-3:Audio T/F LC Scalable
	ISO 14496-3:Audio TwinVQ Core
	ISO 14496-3:Audio CELP
	ISO 14496-3:Audio HVXC
	ISO 14496-3:Audio HILN
	ISO 14496-3:Audio TTSI
	ISO 14496-3:Audio Main Synthetic
	ISO 14496-3:Audio Wavetable Synthetic
	reserved for ISO use
	ISO 13818-2:Visual Simple Profile
	ISO 13818-2:Visual Main Profile
	ISO 13818-2:Visual SNR Profile
	ISO 13818-2:Visual Spatial Profile
	ISO 13818-2:Visual High Profile
	ISO 13818-2:Visual 442 Profile
	ISO 13818-7:Audio (MPEG-2 AAC)
	ISO 13818-3:Audio (MPEG-2 layer 1/2/3)
	ISO 11172-2:Visual (MPEG-1)
	ISO 11172-3:Audio (MPEG-1)
	reserved for ISO use
	user private
	no profile specified

Returns:

the object profile

getStreamType

public int getStreamType()

The stream type conveys the type of this elementary stream as per the following table: 0x000x010x020x030x040x050x060x07-0x090x0A0x0B-0x1F0x20-0x3F

Value	Description
	reserved for ISO use
	ObjectDescriptorStream
	ClockReferenceStream
	SceneDescriptionStream
	VisualStream
	AudioStream
	MPEG-7 Stream
	reserved for ISO use
	ObjectContentInfoStream
	reserved for ISO use
	user private

Returns:

the stream type

isUpstream

public boolean isUpstream()

Indicates if this stream is used for upstream information.

Returns:

true if this stream is used for upstream information

getDecodingBufferSize

public int getDecodingBufferSize()

The size of the decoding buffer for this elementary stream in byte.

Returns:

the decoding buffer size

getMaxBitRate

public long getMaxBitRate()

The maximum bitrate of this elementary stream in any time window of one second duration.

Returns:

the maximum bitrate

getAverageBitRate

public long getAverageBitRate()

The average bitrate of the elementary stream. For streams with variable bitrates this value shall be set to zero.

Returns:

the average bitrate or 0 if the stream has a variable bitrate