static HRESULT WINAPI IAVIFile_fnCreateStream(IAVIFile *iface, IAVIStream **avis,
AVISTREAMINFOW *asi)
{
IAVIFileImpl *This = impl_from_IAVIFile(iface);
TRACE("(%p,%p,%p)\n", iface, avis, asi);
/* check parameters */
if (avis == NULL || asi == NULL)
return AVIERR_BADPARAM;
*avis = NULL;
/* We only support one audio stream */
if (This->fInfo.dwStreams != 0 || This->lpFormat != NULL)
return AVIERR_UNSUPPORTED;
if (asi->fccType != streamtypeAUDIO)
return AVIERR_UNSUPPORTED;
/* Does the user have write permission? */
if ((This->uMode & MMIO_RWMODE) == 0)
return AVIERR_READONLY;
This->cbFormat = 0;
This->lpFormat = NULL;
memcpy(&This->sInfo, asi, sizeof(This->sInfo));
/* make sure streaminfo if okay for us */
This->sInfo.fccHandler = 0;
This->sInfo.dwFlags = 0;
This->sInfo.dwCaps = AVIFILECAPS_CANREAD|AVIFILECAPS_CANWRITE;
This->sInfo.dwStart = 0;
This->sInfo.dwInitialFrames = 0;
This->sInfo.dwFormatChangeCount = 0;
memset(&This->sInfo.rcFrame, 0, sizeof(This->sInfo.rcFrame));
This->fInfo.dwStreams = 1;
This->fInfo.dwScale = This->sInfo.dwScale;
This->fInfo.dwRate = This->sInfo.dwRate;
This->fInfo.dwLength = This->sInfo.dwLength;
This->ckData.dwDataOffset = 0;
This->ckData.cksize = 0;
*avis = &This->IAVIStream_iface;
IAVIFile_AddRef(*avis);
return AVIERR_OK;
}
static HRESULT WINAPI ITmpFile_fnQueryInterface(IAVIFile *iface, REFIID refiid,
LPVOID *obj)
{
ITmpFileImpl *This = impl_from_IAVIFile(iface);
TRACE("(%p,%s,%p)\n", This, debugstr_guid(refiid), obj);
if (IsEqualGUID(&IID_IUnknown, refiid) ||
IsEqualGUID(&IID_IAVIFile, refiid)) {
*obj = iface;
IAVIFile_AddRef(iface);
return S_OK;
}
return OLE_E_ENUM_NOMORE;
}
static HRESULT WINAPI IAVIFile_fnGetStream(IAVIFile *iface, IAVIStream **avis, DWORD fccType,
LONG lParam)
{
IAVIFileImpl *This = impl_from_IAVIFile(iface);
TRACE("(%p,%p,0x%08X,%d)\n", iface, avis, fccType, lParam);
/* check parameter */
if (avis == NULL)
return AVIERR_BADPARAM;
*avis = NULL;
/* Does our stream exists? */
if (lParam != 0 || This->fInfo.dwStreams == 0)
return AVIERR_NODATA;
if (fccType != 0 && fccType != streamtypeAUDIO)
return AVIERR_NODATA;
*avis = &This->IAVIStream_iface;
IAVIFile_AddRef(*avis);
return AVIERR_OK;
}
