IMFSource

Operates with sources of frames

Methods

SourceAVPropsGet

Gets media properties (audio and video) of a source object

Syntax

void SourceAVPropsGet( 
   out M_AV_PROPS _pAVProps
)

Parameters

_pAVProps - media properties

SourceFrameConvertedGet

Gets a next frame (that is converted to required format) from file or live source

Syntax

void SourceFrameConvertedGet( 
   ref M_AV_PROPS _pAVPropsOut,
   long _rtMaxWait,
   out MFFrame _ppFrame,
   string _bsHints
)

Parameters

_pAVPropsOut - media properties that specify required format for a frame
_rtMaxWait -  maximal wait time for a frame in 100-nanoseconds units. By default use "-1".
_ppFrame - converted frame object
_bsHints - additional parameters

SourceFrameConvertedGetByNumber

Gets a converted to required format frame by its number. For live sources number is ignored.

Syntax

void SourceFrameConvertedGetByNumber( 
   ref M_AV_PROPS _pAVPropsOut,
   int _nFrameNo,
   long _rtMaxWait,
   out MFFrame _ppFrame,
   string _bsHints
)

Parameters

_pAVPropsOut - required format's properties for a frame
_nFrameNo - number of a frame. It is possible to use negative values. For example, "-1" returns you a next frame and "-5" returns you the next 5th frame
_rtMaxWait -  maximal wait time for a frame in 100-nanoseconds units. By default use "-1".
_ppFrame - converted frame object
_bsHints - additional parameters

SourceFrameConvertedGetByTime

Gets a converted to required format frame by its time. For live sources time is ignored.

Syntax

void SourceFrameConvertedGetByTime( 
   ref M_AV_PROPS _pAVPropsOut,
   double _dblTimeSec,
   long _rtMaxWait,
   out MFFrame _ppFrame,
   string _bsHints
)

Parameters

_pAVPropsOut - required format's properties for a frame
_dblTimeSec - position of a frame in time. To get a next frame use "-1"
_rtMaxWait -  maximal wait time for a frame in 100-nanoseconds units. By default use "-1".
_ppFrame - converted frame object
_bsHints - additional parameters

SourceFrameGet

Gets an original next frame of a file or live source

Syntax

void SourceFrameGet( 
   long _rtMaxWait,
   out MFFrame _ppFrame,
   string _bsHints
)

Parameters

_rtMaxWait - maximal wait time for a frame in 100-nanoseconds units. By default use "-1".
_ppFrame - converted frame object
_bsHints - additional parameters

SourceFrameGetByNumber

Gets an original frame by its number. For live sources number is ignored.

Syntax

void SourceFrameGetByNumber( 
   int _nFrameNo,
   long _rtMaxWait,
   out MFFrame _ppFrame,
   string _bsHints
)

Parameters

_nFrameNo - frame's number
_rtMaxWait - maximal wait time for a frame in 100-nanoseconds units. By default use "-1".
_ppFrame - converted frame object
_bsHints - additional parameters

SourceFrameGetByTime

Gets an original frame by its time. For live sources time is ignored.

Syntax

void SourceFrameGetByTime( 
   double _dblTimeSec,
   long _rtMaxWait,
   out MFFrame _ppFrame,
   string _bsHints
)

Parameters

_dblTimeSec - position of a frame in time. To get a next frame use "-1".
_rtMaxWait - maximal wait time for a frame in 100-nanoseconds units. By default use "-1".
_ppFrame - converted frame object
_bsHints - additional parameters