Microsoft DirectX 9.0

DS3DBUFFER

The DS3DBUFFER structure contains all information necessary to uniquely describe the location, orientation, and motion of a 3-D sound buffer. This structure is used with the IDirectSound3DBuffer8::GetAllParameters and IDirectSound3DBuffer8::SetAllParameters methods.

Syntax

typedef struct { 
  DWORD      dwSize; 
  D3DVECTOR  vPosition; 
  D3DVECTOR  vVelocity; 
  DWORD      dwInsideConeAngle; 
  DWORD      dwOutsideConeAngle; 
  D3DVECTOR  vConeOrientation; 
  LONG       lConeOutsideVolume; 
  D3DVALUE   flMinDistance; 
  D3DVALUE   flMaxDistance; 
  DWORD      dwMode; 
} DS3DBUFFER, *LPDS3DBUFFER;

typedef const DS3DBUFFER *LPCDS3DBUFFER;

Members

dwSize

Size of the structure, in bytes. This member must be initialized before the structure is used.

vPosition

A D3DVECTOR structure that describes the current position of the 3-D sound buffer.

vVelocity

A D3DVECTOR structure that describes the current velocity of the 3-D sound buffer.

dwInsideConeAngle

The angle of the inside sound projection cone.

dwOutsideConeAngle

The angle of the outside sound projection cone.

vConeOrientation

A D3DVECTOR structure that describes the current orientation of this 3-D buffer's sound projection cone.

lConeOutsideVolume

The cone outside volume.

flMinDistance

The minimum distance.

flMaxDistance

The maximum distance.

dwMode

The 3-D sound processing mode to be set. This value must be one of the values shown in the following table.

Value Description
DS3DMODE_DISABLE 3-D sound processing is disabled. The sound will appear to originate from the center of the listener's head.
DS3DMODE_HEADRELATIVE Sound parameters (position, velocity, and orientation) are relative to the listener's parameters. In this mode, the absolute parameters of the sound are updated automatically as the listener's parameters change, so that the relative parameters remain constant.
DS3DMODE_NORMAL Default. Normal processing.

Requirements

  Header: Declared in Dsound.h.

See Also