MMMFVideoPlayHwDeviceExtensionScanCopy Class Reference
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class MMMFVideoPlayHwDeviceExtensionScanCopy
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A custom interface extending the functionality of
CMMFVideoPlayHwDevice
, adding support for the decoder to handle the copying of the bitstream data into the buffers, combining this with a scan of the data and support for the passing of information from the client to the decoder describing what part of a frame the data contains.
Member Functions Documentation
ScanAndCopyCodedDataL(TPtr8, TVideoInputBuffer *, TInt &, TFramePortion)
Passes a pointer to a piece of coded video data to the decoder. The data buffer, which is left empty by the client, must be retrieved from the decoder with GetBufferL().
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leave
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"This method may leave with one of the system-wide error codes."
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Pre-condition
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"This method can only be called after the hwdevice has been initialized with Initialize()."
Parameters
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TPtr8
aCodedData
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"A pointer to the coded data unit to scan and copy."
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TVideoInputBuffer
* aBuffer
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"The empty data buffer."
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TInt
& aConsumed
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TFramePortion
aPortion = EFramePortionUnknown
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"The portion of the frame that the data contains. Defaults to EFramePortionUnknown."
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WriteCodedDataL(TVideoInputBuffer *, TFramePortion)
Writes a piece of coded video data to the decoder. The data buffer must be retrieved from the decoder with GetBufferL().
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leave
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"This method may leave with one of the system-wide error codes."
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Pre-condition
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"This method can only be called after the hwdevice has been initialized with Initialize()."
Parameters
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TVideoInputBuffer
* aBuffer
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"The coded data unit to write."
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TFramePortion
aPortion = EFramePortionUnknown
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"The portion of the frame that the data contains. Defaults to EFramePortionUnknown."
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All rights
reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License
v1.0.