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Class quicktime.std.image.ImageSequenceDataSource 

java.lang.Object
   |
   +----quicktime.QTObject
           |
           +----quicktime.std.image.ImageSequenceDataSource
public final class ImageSequenceDataSource
extends QTObject
implements QuickTimeLib
QuickTime 2.1 introduced support for an arbitrary number of sources of data for an image sequence. This functionality forms the basis for dynamically modifying parameters to a decompressor. It also allows for codecs to act as special effects components, providing filtering and transition type effects. A client can attach an arbitrary number of additional inputs to the codec. It is up to the particular codec to determine whether to use each input and how to interpret the input. For example, an 8-bit gray image could be interpreted as a blend mask or as a replacement for one of the RGB data planes.

Constructor Index

o ImageSequenceDataSource(CDSequence, int, int)
This will retrieve a previously created data source for an ImageSequence.
o ImageSequenceDataSource(CDSequence, int, int, QTHandleRef)
Creates a new data source for an ImageSequence.

Method Index

o changedSourceData()
Notifies the compressor that the image source data has changed.
o dispose()
All data sources are diposed of with the sequence.
o setSourceData(EncodedImage)
The CDSequenceSetSourceData function is called to set data in a new frame to a specific source.

Constructors

o ImageSequenceDataSource 
 public ImageSequenceDataSource(CDSequence seq,
                                int sourceType,
                                int sourceInputNumber,
                                QTHandleRef dataDescription) throws QTException
Creates a new data source for an ImageSequence.

QuickTime::CDSequenceNewDataSource

Parameters:
sourceType - A four-character code describing how the input will be used. This code is usually derived from the information returned by the codec. For example, if a mask plane was passed, this field might contain ‘mask’.
sourceInputNumber - More than one instance of a given source type may exist. The first occurrence should have a source input number of 1, and so on.
dataDescription - A handle to a data structure describing the input data. For compressed image data, this is just an ImageDescriptionHandle.
o ImageSequenceDataSource 
 public ImageSequenceDataSource(CDSequence seq,
                                int sourceType,
                                int sourceInputNumber) throws QTException
This will retrieve a previously created data source for an ImageSequence.

QuickTime::CDSequenceGetDataSource

Parameters:
sourceType - A four-character code describing how the input will be used. This code is usually derived from the information returned by the codec. For example, if a mask plane was passed, this field might contain ‘mask’.
sourceInputNumber - More than one instance of a given source type may exist. The first occurrence should have a source input number of 1, and so on.

Methods

o changedSourceData 
 public void changedSourceData() throws StdQTException
Notifies the compressor that the image source data has changed. Thus if the data is a PixMap the data source itself is unchanged by when you draw into the PixMap the contents of the PixMap have changed - so you use this method to notify the ImageSequence that the data has changed.

QuickTime::CDSequenceChangedSourceData

o setSourceData 
 public void setSourceData(EncodedImage data) throws StdQTException
The CDSequenceSetSourceData function is called to set data in a new frame to a specific source. For example, as a new frame of compressed data arrives at a source, CDSequenceSetSourceData will be called.

QuickTime::CDSequenceSetSourceData

Parameters:
data - the new encoded image data for the DataSource.
o dispose 
 public void dispose() throws StdQTException
All data sources are diposed of with the sequence. However if you want to remove a previously created data source for an image sequence an application can use this call to dispose of this data source. Once called this object is invalid and consequent calls on this object will return an error

QuickTime::CDSequenceDisposeDataSource 

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