Compartir a través de

IMpeg2Stream::Initialize

  • Artículo
 
Microsoft DirectShow 9.0

IMpeg2Stream::Initialize

The Initialize method initializes the MPEG2Stream object. This method should be called once, immediately after creating the object. The IMpeg2Data::GetStreamOfSections method calls this method internally, so typically an application will not call it.

Syntax

  HRESULT Initialize(
  MPEG_REQUEST_TYPE  requestType,
  IMpeg2Data*  pMpeg2Data,
  PMPEG_CONTEXT  pContext,
  PID  pid,
  TID  tid,
  PMPEG2_FILTER  pFilter,
  HANDLE  hDataReadyEvent
);

Parameters

requestType

[in]  Specifies the request type, as an MPEG_REQUEST_TYPE value.

pMpeg2Data

[in]  Pointer to the IMpeg2Data interface of the MPEG-2 Sections and Tables filter.

pContext

[in]  Pointer to an MPEG_CONTEXT structure. This structure indicates the MPEG-2 source.

pid

[in]  Specifies a packet identifier (PID), indicating which packets in the transport stream are requested.

tid

[in]  Specifies a table identifier (TID), indicating which table sections to retrieve.

pFilter

[in]  Optional pointer to an MPEG2_FILTER structure. The caller can use this parameter to exclude packets based on additional MPEG-2 header fields. This parameter can be NULL.

hDataReadyEvent

[in]  Handle to an event. The filter signals this event whenever it receives new data.

Return Values

The method returns an HRESULT. Possible values include those in the following table.

Return code Description
E_INVALIDARG Invalid or NULL pointer argument.
E_OUTOFMEMORY Insufficient memory.
MPEG2_E_ALREADY_INITIALIZED The method has been called on this object already.
S_OK The method succeeded.

Requirements

Header: Include Mpeg2data.h.

See Also