IDirectSound8::CreateSoundBuffer Method
[The feature associated with this page, DirectSound, is a legacy feature. It has been superseded by WASAPI and Audio Graphs. Media Casting have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Media Casting instead of DirectSound, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The CreateSoundBuffer method creates a sound buffer object to manage audio samples.
Syntax
HRESULT CreateSoundBuffer(
LPCDSBUFFERDESC pcDSBufferDesc,
LPDIRECTSOUNDBUFFER * ppDSBuffer,
LPUNKNOWN pUnkOuter
)
Parameters
- pcDSBufferDesc
Address of a DSBUFFERDESC structure that describes the sound buffer to create. - ppDSBuffer
Address of a variable that receives the IDirectSoundBuffer interface of the new buffer object. Use QueryInterface to obtain IDirectSoundBuffer8. IDirectSoundBuffer8 is not available for the primary buffer. - pUnkOuter
Address of the controlling object's IUnknown interface for COM aggregation. Must be NULL.
Return Value
If the method succeeds, the return value is DS_OK, or DS_NO_VIRTUALIZATION if a requested 3D algorithm was not available and stereo panning was substituted. See the description of the guid3DAlgorithm member of DSBUFFERDESC. If the method fails, the return value may be one of the error values shown in the following table.
Remarks
DirectSound does not initialize the contents of the buffer, and the application cannot assume that it contains silence.
If an attempt is made to create a buffer with the DSBCAPS_LOCHARDWARE flag on a system where hardware acceleration is not available, the method fails with either DSERR_CONTROLUNAVAIL or DSERR_INVALIDCALL, depending on the operating system.
Requirements
Header: Declared in DSound.h.
Library: Use Dsound3d.dll.