void Video::abort()
{
HRESULT hr;
IMediaControl *pMC;
if(!init_success)
return;
// Obtain the interface to our filter graph
if( (hr = pGraph->QueryInterface(IID_IMediaControl, (void **) &pMC)) == 0)
{
// Ask the filter graph to stop and release the interface
hr = pMC->Stop();
pMC->Release();
// rewind to the beginning
IMediaPosition *pMP;
if( (hr=pGraph->QueryInterface( IID_IMediaPosition, (void **) &pMP))==0)
{
pMP->put_CurrentPosition( 0);
pMP->Release();
}
}
state = STOPPED;
if( hr && !skip_on_fail_flag)
err.run("video.abort error %d", hr);
}
STDMETHODIMP
CPosPassThru::CanSeekBackward(LONG *pCanSeekBackward)
{
IMediaPosition* pMP;
HRESULT hr = GetPeer(&pMP);
if (FAILED(hr)) {
return hr;
}
hr = pMP->CanSeekBackward(pCanSeekBackward);
pMP->Release();
return hr;
}
STDMETHODIMP
CPosPassThru::get_Rate(double * pdRate)
{
IMediaPosition* pMP;
HRESULT hr = GetPeer(&pMP);
if (FAILED(hr)) {
return hr;
}
hr = pMP->get_Rate(pdRate);
pMP->Release();
return hr;
}
STDMETHODIMP
CPosPassThru::put_PrerollTime(REFTIME llTime)
{
IMediaPosition* pMP;
HRESULT hr = GetPeer(&pMP);
if (FAILED(hr)) {
return hr;
}
hr = pMP->put_PrerollTime(llTime);
pMP->Release();
return hr;
}
STDMETHODIMP
CPosPassThru::get_StopTime(REFTIME * pllTime)
{
IMediaPosition* pMP;
HRESULT hr = GetPeer(&pMP);
if (FAILED(hr)) {
return hr;
}
hr = pMP->get_StopTime(pllTime);
pMP->Release();
return hr;
}
STDMETHODIMP
CPosPassThru::get_Duration(REFTIME * plength)
{
IMediaPosition* pMP;
HRESULT hr = GetPeer(&pMP);
if (FAILED(hr)) {
return hr;
}
hr = pMP->get_Duration(plength);
pMP->Release();
return hr;
}
void PlaybackControls::setSeek(int value)
{
IMediaPosition *pPosition;
if (mpGraph)
{
HRESULT hr = mpGraph->QueryInterface(IID_IMediaPosition, (void **)&pPosition);
if (SUCCEEDED(hr))
{
pPosition->put_CurrentPosition(value);
}
pPosition->Release();
}
}
STDMETHODIMP
CPosPassThru::put_Rate(double dRate)
{
if (0.0 == dRate) {
return E_INVALIDARG;
}
IMediaPosition* pMP;
HRESULT hr = GetPeer(&pMP);
if (FAILED(hr)) {
return hr;
}
hr = pMP->put_Rate(dRate);
pMP->Release();
return hr;
}
void PlaybackControls::getSeek()
{
if (needsReset == true)
{
mpParentWindow->resize(351, 161);
QSize size = mpParentWindow->size();
int height = size.height();
int width = size.width();
if (width < 360)
{
needsReset = false;
}
}
reset = true;
REFTIME time;
REFTIME duration;
QString timeString;
QString durationString;
IMediaPosition *pPosition;
if (mpGraph)
{
HRESULT hr = mpGraph->QueryInterface(IID_IMediaPosition, (void **)&pPosition);
if (SUCCEEDED(hr))
{
pPosition->get_CurrentPosition(&time);
pPosition->get_Duration(&duration);
timeString.setNum(floor(time));
durationString.setNum(floor(duration));
QString output = timeString;
output += " : ";
output += durationString;
mpParentWindow->seekLabel->setText(output);
mpParentWindow->seekBar->setRange(0, duration);
if (!mpParentWindow->seekBar->isSliderDown())
{
mpParentWindow->seekBar->setValue(time);
}
}
pPosition->Release();
}
}
