: Class DataCodecCompressor
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quicktime.std.qtcomponents
Class DataCodecCompressor
java.lang.Object
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+--quicktime.QTObject
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+--quicktime.std.comp.ComponentIdentifier
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+--quicktime.std.comp.Component
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+--quicktime.std.qtcomponents.DataCodecCompressor
All Implemented Interfaces: InterfaceLib, PrimitivesLib, QuickTimeLib, SharedLibrary, com.apple.jdirect.SharedLibrary
public class DataCodecCompressorextends Componentimplements QuickTimeLib
Compresses data using the specified compressor
Fields inherited from interface quicktime.jdirect.QuickTimeLib
JDirect_MacOSX, libraryInstance, name
Constructor Summary
DataCodecCompressor(ComponentIdentifier comp)
Given a component identifier it opens the specified component.
DataCodecCompressor(int subType)
Opens the specified data codec compressor component, 'dcom', with the given subType.
Method Summary
DataCodecInfo
compress(QTPointerRef srcData,
QTPointerRef dstData)
Compress the specified data.
int
getCompressBufferSize(int srcSize)
Returns the estimated maximum size of compressing the specified size bytes
using this compressor.
Methods inherited from class quicktime.std.comp.Component
count
Methods inherited from class quicktime.std.comp.ComponentIdentifier
find, find, getInfo, toString
Methods inherited from class quicktime.QTObject
disposeQTObject, equals, ID
Methods inherited from class java.lang.Object
getClass, hashCode, notify, notifyAll, wait, wait, wait
Constructor Detail
DataCodecCompressor
public DataCodecCompressor(int subType)
throws QTException
Opens the specified data codec compressor component, 'dcom', with the given subType.
QuickTime::OpenADefaultComponent
Parameters:subType - the compressor type that will be used to compress the data
DataCodecCompressor
public DataCodecCompressor(ComponentIdentifier comp)
throws QTException
Given a component identifier it opens the specified component. The component type
must be 'dcom' or an exception will be thrown as it is not a DataCodecCompressor.
QuickTime::OpenAComponent
Parameters:comp - the component identifier to open
Method Detail
compress
public DataCodecInfo compress(QTPointerRef srcData,
QTPointerRef dstData)
throws StdQTException
Compress the specified data.
Before calling the DataCodecCompress function, you should call the
DataCodecGetCompressBufferSize function to obtain the maximum possible size
of the compressed data that will be returned. You can then use this value as the
value of the dstBufferSize parameter. Note that a buffer for compressed data
that is the same size as the uncompressed data may not be large enough: in
some cases, the size of the compressed data can be larger than the size of the
decompressed data.
QuickTime::DataCodecCompress
Parameters:srcData - Contains a pointer to the data to be compressed.dstData - Contains a pointer to the buffer in which to store the compressed data.Returns:a DataCodecInfo that contains information about the compression.
getCompressBufferSize
public int getCompressBufferSize(int srcSize)
throws StdQTException
Returns the estimated maximum size of compressing the specified size bytes
using this compressor.
QuickTime::DataCodecGetCompressBufferSize
Parameters:srcSize - the size of the buffer that will be compressed.Returns:the size of the buffer you should allocate to contain the specified srcSize data
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