Include
#include "ILMDVRSource.h"
Syntax
Language | Syntax |
---|---|
C Syntax | HRESULT ILMDVRSource_GetTimedFragmentAlignment(pILMDVRSource, startOffset, endOffset, timeThreshold, pAlignedStartOffset, pAlignedEndOffset, pAlignedDuration) |
C++ Syntax | HRESULT GetTimedFragmentAlignment(startOffset, endOffset, timeThreshold, pAlignedStartOffset, pAlignedEndOffset, pAlignedDuration) |
Data Type | Description |
---|---|
ILMDVRSource *pILMDVRSource; | pointer to an interface |
[in]double startOffset; | starting byte offset |
[in]double endOffset; | ending byte offset |
[in]double timeThreshold; | minimum time of fragments |
[out]double *pAlignedStartOffset; | pointer storing offset of first transport fragment |
[out]double *pAlignedEndOffset; | pointer storing offset of last transport fragment |
[out]double *pAlignedDuration; | pointer storing the time of the transport fragments found |
Summary
Takes the user-supplied byte range and scans for transport fragment boundaries.
Parameters
Parameter | Description |
---|---|
pILMDVRSource; | Pointer to an *pILMDVRSource interface. |
startOffset; | Specifies the byte offset at which to begin scanning for transport fragments. |
endOffset; | Specifies the byte offset at which to stop scanning for transport fragments. |
endOffset; | Specifies the byte offset at which to stop scanning for transport fragments. |
pAlignedStartOffset; | A pointer to a double variable, storing the offset of the start of the first transport fragment found. |
pAlignedEndOffset; | A pointer to a double variable, storing the offset of the end of the last transport fragment. |
pAlignedDuration; | A pointer to a double variable, storing the ime (in seconds), of the transport fragments found. |
Returns
Value | Meaning |
---|---|
S_OK | No error. |
S_FALSE | No transport fragment found: pAlignedStartOffset and pAlignedEndOffset are equal to startOffset, and indicate an empty search. |
Remarks
Takes the user-supplied byte range and scans for transport fragment boundaries. Use this function along with ILMDVRSource::CopyBufferToFile to save a completely intact MPEG transport fragment.
Set up the MPEG multiplexer used for recording to DVR by calling put_OutputType(Mpg2MxT_OutputType_HLS). Doing so guarantees that fragment boundaries start with synchronization frames. Specify the boundary time interval by calling put_ResyncInterval(intervalTime).
Required DLLs and Libraries
LMDVRSource
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.
Win32, x64
Example
For a C++ example, refer to ILMDVRSource::GetTimedFragmentAlignment Example For C++
ILMDVRSource::CopyBufferToFile
ILMDVRSource::ReadData
Multimedia Function Groups
DVR Function Groups
Introduction to the LEADTOOLS MPEG-2 Transport Module
DVR Component FAQs
LEAD DVR Sink Filter
Accessing the DVR Sink Object
How to Copy Buffered DVR Data to a New File
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