STDMETHODIMP
CPosPassThru::GetCapabilities(DWORD * pCaps)
{
IMediaSeeking* pMS;
HRESULT hr = GetPeerSeeking(&pMS);
if (FAILED(hr)) {
return hr;
}
hr = pMS->GetCapabilities(pCaps);
pMS->Release();
return hr;
}
long video_get_seek(int id) {
get_videor(videoStruct, id, -1);
IMediaSeeking* pSeek;
HRESULT hr = videoStruct->pGraph->QueryInterface(IID_IMediaSeeking, (void**)&pSeek);
DWORD dwCap = 0;
hr = pSeek->GetCapabilities(&dwCap);
long long position = 0;
if (AM_SEEKING_CanSeekAbsolute & dwCap)
{
hr = pSeek->GetCurrentPosition(&position);
}
pSeek->Release();
return position;
}
long video_get_duration(int id) {
get_videor(videoStruct, id, -1);
IMediaSeeking* pSeek;
HRESULT hr = videoStruct->pGraph->QueryInterface(IID_IMediaSeeking, (void**)&pSeek);
DWORD dwCap = 0;
hr = pSeek->GetCapabilities(&dwCap);
long long duration = 0;
if (AM_SEEKING_CanSeekAbsolute & dwCap) //TODO: This if check might not be needed
{
hr = pSeek->GetDuration(&duration);
}
pSeek->Release();
return duration;
}
void video_set_seek(int id, long position) {
get_video(videoStruct, id);
IMediaSeeking* pSeek;
HRESULT hr = videoStruct->pGraph->QueryInterface(IID_IMediaSeeking, (void**)&pSeek);
DWORD dwCap = 0;
hr = pSeek->GetCapabilities(&dwCap);
if (AM_SEEKING_CanSeekAbsolute & dwCap)
{
// Graph can seek to absolute positions.
REFERENCE_TIME rtNow = position;
hr = pSeek->SetPositions(
&rtNow, AM_SEEKING_AbsolutePositioning,
NULL, AM_SEEKING_NoPositioning
);
}
pSeek->Release();
}