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IAMExtTransport::SetTransportBasicParameters

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Microsoft DirectShow 9.0

IAMExtTransport::SetTransportBasicParameters

The SetTransportBasicParameters method sets general properties of the transport.

Syntax

  HRESULT SetTransportBasicParameters(
  long Param,
  long Value,
  LPCOLESTR pszData
);

Parameters

Param

[in]  Specifies which property to set. See Remarks for more information.

Value

[in]  Specifies the value of the property as a long integer. See Remarks for more information.

pszData

[in]  Specifies the value of the property as an LPOLESTR. See Remarks for more information.

Return Values

When this method succeeds, it returns S_OK. Otherwise it returns an HRESULT error code. Possible error codes include the following.

Return code Description
E_NOTIMPL Device does not support setting this property.
ERROR_DEVICE_REMOVED Device was removed.

Remarks

The Param parameter is a flag that specifies which property to set. For some flags, the property is numeric; use the Value parameter to specify the value. For other flags, the property is a string; use the pszData parameter to specify the value. In either case, the method ignores the other parameter.

For the following flags, the Value parameter takes a defined constant.

  • ED_TRANSBASIC_TIME_FORMAT: Specifies the time format.

    Constant Description
    ED_FORMAT_MILLISECONDS Milliseconds.
    ED_FORMAT_FRAMES Frames.
    ED_FORMAT_REFERENCE_TIME Reference time.
    ED_FORMAT_HMSF Binary coded decimal, representing hours, minutes, seconds, and frames.
    ED_FORMAT_TMSF Binary coded decimal, representing tracks, minutes, seconds, and frames.

  • ED_TRANSBASIC_TIME_REFERENCE: Specifies the reference time in use by the device.

    Constant Description
    ED_TIMEREF_TIMECODE Time code.
    ED_TIMEREF_CONTROL_TRACK Control track.
    ED_TIMEREF_INDEX Index.
    ED_TIMEREF_ATN Absolute track number. This constant is defined in the header file Xprtdefs.h.

  • ED_TRANSBASIC_END_STOP_ACTION: Specifies the action the device takes when it reaches the end of the transport medium.

    Constant Description
    ED_MODE_STOP Stop.
    ED_MODE_REWIND Rewind.
    ED_MODE_FREEZE Freeze/pause.

  • ED_TRANSBASIC_RECORD_FORMAT: Specifies the recording speed.

    Constant Description
    ED_RECORD_FORMAT_SP Standard play.
    ED_RECORD_FORMAT_LP Long play.
    ED_RECORD_FORMAT_EP Extended play.

  • ED_TRANSBASIC_SUPERIMPOSE: Specifies whether the on-screen display is enabled or disabled.

    Constant Description
    OATRUE On-screen display is enabled.
    OAFALSE On-screen display is disabled.

  • ED_TRANSBASIC_STEP_UNIT: Specifies the step unit.

    Constant Description
    ED_STEP_FIELD Fields.
    ED_STEP_FRAME Frames.
    ED_STEP_3_2 3/2 Pulldown.

  • ED_TRANSBASIC_SET_COUNTER_FORMAT: Sets the time format for the counter. See the ED_TRANSBASIC_TIME_FORMAT flag for possible values.

For the following flags, use a numeric value in the Value parameter.

Flag Description
ED_TRANSBASIC_STEP_COUNT Specifies the step count, in units defined by the ED_TRANSBASIC_STEP_UNIT flag.
ED_TRANSBASIC_SET_FREEZE_TIMEOUT Specifies the timeout for freeze mode, in units of the current time format.
ED_TRANSBASIC_SETCLOCK Sets the clock time.
ED_TRANSBASIC_SET_COUNTER_VALUE Sets the value of the counter.

For the following flags, use a string in the pszData parameter.

Flag Description
ED_TRANSBASIC_VOLUME_NAME Specifies the volume name.

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