Microsoft DirectX 8.0

Constants

The following constants are defined for Microsoft® DirectX® media parameters.

Parameter Capabilities Flags

These flags specify which envelope curves are supported.

ConstantDescription
MP_CAPS_CURVE_JUMPJump to the next point without interpolation. See MP_CURVE_JUMP.
MP_CAPS_CURVE_LINEARLinear interpolation. See MP_CURVE_LINEAR.
MP_CAPS_CURVE_SQUAREParabolic curve. See MP_CURVE_SQUARE.
MP_CAPS_CURVE_INVSQUAREInverse square curve. See MP_CURVE_INVSQUARE.
MP_CAPS_CURVE_SINESine curve. See MP_CURVE_SINE.

Envelope Flags

These flags specify information about envelope segments.

ConstantDescription
MPF_ENVLP_STANDARD Use all the information provided with the envelope segment.
MPF_ENVLP_BEGIN_CURRENTVAL Ignore the specified start value. Start from the current value.
MPF_ENVLP_BEGIN_NEUTRALVAL Ignore the specified start value. Start from the neutral value. (See MP_PARAMINFO.)

See Also

MP_ENVELOPE