示例#1
0
STDMETHODIMP
CPosPassThru::GetCapabilities(DWORD * pCaps)
{
    IMediaSeeking* pMS;
    HRESULT hr = GetPeerSeeking(&pMS);
    if (FAILED(hr)) {
	return hr;
    }

    hr = pMS->GetCapabilities(pCaps);
    pMS->Release();
    return hr;
}
示例#2
0
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;
}
示例#3
0
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;
}
示例#4
0
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();
}