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IAMExtTransport::SetEditPropertySet

  • Articolo
 
Microsoft DirectShow 9.0

IAMExtTransport::SetEditPropertySet

The SetEditPropertySet method registers an edit property set that describes a group of edit properties.

This method is not implemented.

Syntax

  HRESULT SetEditPropertySet(
  long *pEditID,
  long State
);

Parameters

pEditID

[in, out]  Pointer to a long integer that specifies or receives an identifier for the edit property set.

State

[in]  Specifies the state of the edit property set.

Value Description
ED_ACTIVE Activates the edit property set.
ED_DELETE Deletes the edit property set.
ED_INACTIVE Inactivates edit property set.
ED_REGISTER Registers the edit property set.

If the value is ED_REGISTER, the pEditID parameter receives an identifier for the edit property set. For the other flags, use the pEditID parameter to specify the identifier.

Return Values

When this method succeeds, it returns S_OK. Otherwise it returns an HRESULT error code.

Remarks

An edit event is a set of parameters that define a recording sequence. For example, the parameters can specify editing modes, inpoints and outpoints, or seek positions. Each edit event consists of one or more parameters, called edit properties. The collection of properties is called an edit property set. Each edit property set is identified by a long integer, assigned by the device filter.

To create and execute an edit event, the application must do the following:

  • Register an edit property set. Call the SetEditPropertySet method with the value  ED_REGISTER in the State parameter. When the method returns, the pEditID parameter contains the identifer for the edit property set. Use this number to identify the edit property set in subsequent method calls.
  • Specify the edit properties using the IAMExtTransport::SetEditProperty method.
  • Activate the edit event by calling SetEditPropertySet with the value ED_ACTIVE.
  • Cue the transport by calling SetEditProperty with the value ED_EDIT_SEEK.
  • Run the filter graph.

For example, the following code configures an insert edit on all tracks:

// Register an edit property set ID. (Causes memory to be allocated.)
long EditId;
SetEditPropertySet(&EditId, ED_REGISTER);  

// Set the edit mode.
SetEditProperty(EditId, ED_EDIT_MODE, ED_EDIT_MODE_INSERT);
// Set the particulars about the event.
SetEditProperty(EditId, ED_EDIT_TRACK, ED_VIDEO | ED_AUDIO_ALL);
SetEditProperty(EditId, ED_REHEARSE_MODE, ED_EDIT_PERFORM);

// Set the source and record times. 
SetEditProperty(EditId, ED_EDIT_SRC_INPOINT, 200)
SetEditProperty(EditId, ED_EDIT_SRC_OUTPOINT, 500)
SetEditProperty(EditId, ED_EDIT_REC_INPOINT, 100)
SetEditProperty(EditId, ED_EDIT_REC_OUTPOINT, 400)

// Activate the edit event.
SetEditPropertySet(&EditId, ED_ACTIVE); 
// Cue up the machine.
SetEditProperty(EditId, ED_EDIT_SEEK, OATRUE); 

// Run the graph. (Not shown.)

DV Implementation

MSDV does not support this method. It returns E_NOTIMPL.

Requirements

Header: Declared in Strmif.h; include Dshow.h.

Library: Use Strmiids.lib.

See Also