The IAAFEssenceDataStream interface is an additional interface implemented by objects which stream over AAF files, and were therefore created by the AAFContainerDef for AAF files. More...
Public Member Functions | |
| HRESULT | Init ([in] IUnknown *essenceData) |
| Init the stream over a particular EssenceData. | |
The IAAFEssenceDataStream interface is an additional interface implemented by objects which stream over AAF files, and were therefore created by the AAFContainerDef for AAF files.
This interface allows the setting of one additional parameter (a pointer to the AAFEssenceData object to stream over) which was not general-purpose enough to be in the IAAFEssenceStream interface.
Objects which support this interface must be created by methods in IAAFContainerDef, since the container definition is what is used to differentiate between the different streams. If the stream needs a reference to data other than a file pointer (ex. the AAFContainer makes a stream which needs a reference to a structureed storage stream) will have another interface to support the additional behaviour. For an AAF container, the additional interface is IAAFEssenceDataStream.
The following has been copied from the IAAFEssenceStream interface: The IAAFEssenceStream interface is an internal interface used by AAFEssenceAccess and essence codecs to read the low-level representation of the essence. There are multiple classes implementing this interface, each representing a different underlying container holding the essence data. The idea of "container" is separate from any formatting such as WAVE or JPEG. Examples of containers (and therefore streams), are essence embedded in AAF files, and essence in a file all by itself (ex. a WAVE file).
Definition at line 3082 of file AAFPlugin.idl.
| HRESULT IAAFEssenceDataStream::Init | ( | [in] IUnknown * | essenceData | ) |
Init the stream over a particular EssenceData.
| essenceData | [in] The EssenceData to stream over |
1.7.4