HRESULT STDMETHODCALLTYPE CVCamPin::SetFormat(AM_MEDIA_TYPE *pmt)
{
DECLARE_PTR(VIDEOINFOHEADER, pvi, m_mt.pbFormat);
m_mt = *pmt;
IPin* pin;
ConnectedTo(&pin);
if(pin)
{
IFilterGraph *pGraph = m_pParent->GetGraph();
pGraph->Reconnect(this);
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE CVCamStream::SetFormat(AM_MEDIA_TYPE *pmt)
{
//m_mt is the media type of the pin (CMediaType)
DECLARE_PTR(VIDEOINFOHEADER, pvi, m_mt.pbFormat); // Can probably change this to something more familiar
m_mt = *pmt;
IPin* pin;
ConnectedTo(&pin);
// if we are currently connected to a pin...
if (pin)
{
IFilterGraph *pGraph = m_pParent->GetGraph(); // get the graph of the parent (What does that do?)
pGraph->Reconnect(this); // connect the graph
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE UVCamStream::SetFormat(AM_MEDIA_TYPE *pmt)
{
if(!pmt) return E_POINTER;
CAutoLock cAutoLock(m_pFilter->pStateLock());
DECLARE_PTR(VIDEOINFOHEADER, pvi, m_mt.pbFormat);
m_mt = *pmt;
IPin* pin;
ConnectedTo(&pin);
if(pin)
{
IFilterGraph *pGraph = m_pParent->GetGraph();
pGraph->Reconnect(this);
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE XnVideoStream::SetFormat(AM_MEDIA_TYPE *pmt)
{
XN_METHOD_START;
XN_METHOD_CHECK_POINTER(pmt);
if (pmt == NULL)
{
XN_METHOD_RETURN(E_INVALIDARG);
}
xnLogVerbose(XN_MASK_FILTER, "SetFormat was called");
// check if this format is supported
CMediaType mediaType(*pmt);
int index = FindCapability(mediaType);
if (index == -1)
{
XN_METHOD_RETURN(VFW_E_INVALIDMEDIATYPE);
}
// keep previous one (so we can rollback)
int prevPreferred = m_nPreferredMode;
// set the preferred mode
m_nPreferredMode = index;
// try to reconnect (if needed)
IPin* pin;
ConnectedTo(&pin);
if (pin)
{
IFilterGraph *pGraph = ((XnVideoSource*)m_pFilter)->GetGraph();
HRESULT hr = pGraph->Reconnect(this);
if (FAILED(hr))
{
// rollback
m_nPreferredMode = prevPreferred;
XN_METHOD_RETURN(hr);
}
}
XN_METHOD_RETURN(S_OK);
}
HRESULT STDMETHODCALLTYPE CVCamStream::SetFormat(AM_MEDIA_TYPE *pmt)
{
// this is them saying you "must" use this type from now on...unless pmt is NULL that "means" reset...LODO handle it someday...
if(!pmt) {
return S_OK; // *sure* we reset..yeah...sure we did...
}
if(CheckMediaType((CMediaType *) pmt) != S_OK) {
return E_FAIL; // just in case :P [FME...]
}
m_mt = *pmt;
IPin* pin;
ConnectedTo(&pin);
if(pin)
{
IFilterGraph *pGraph = m_pParent->GetGraph();
pGraph->Reconnect(this);
}
return S_OK;
}
// sets fps, size, (etc.) maybe, or maybe just saves it away for later use...
HRESULT STDMETHODCALLTYPE CPushPinDesktop::SetFormat(AM_MEDIA_TYPE *pmt)
{
CAutoLock cAutoLock(m_pFilter->pStateLock());
// I *think* it can go back and forth, then. You can call GetStreamCaps to enumerate, then call
// SetFormat, then later calls to GetMediaType/GetStreamCaps/EnumMediatypes will all "have" to just give this one
// though theoretically they could also call EnumMediaTypes, then SetMediaType, and not call SetFormat
// does flash call both? what order for flash/ffmpeg/vlc calling both?
// LODO update msdn
// "they" [can] call this...see msdn for SetFormat
// NULL means reset to default type...
if(pmt != NULL)
{
if(pmt->formattype != FORMAT_VideoInfo) // same as {CLSID_KsDataTypeHandlerVideo}
return E_FAIL;
// LODO I should do more here...http://msdn.microsoft.com/en-us/library/dd319788.aspx I guess [meh]
// LODO should fail if we're already streaming... [?]
VIDEOINFOHEADER *pvi = (VIDEOINFOHEADER *) pmt->pbFormat;
if(CheckMediaType((CMediaType *) pmt) != S_OK) {
return E_FAIL; // just in case :P [did skype get here once?]
}
// for FMLE's benefit, only accept a setFormat of our "final" width [force setting via registry I guess, otherwise it only shows 80x60 whoa!]
// flash media live encoder uses setFormat to determine widths [?] and then only displays the smallest? oh man that is messed up
if( pvi->bmiHeader.biWidth != getCaptureDesiredFinalWidth() ||
pvi->bmiHeader.biHeight != getCaptureDesiredFinalHeight())
{
return E_INVALIDARG;
}
// ignore other things like cropping requests for now...
// now save it away...for being able to re-offer it later. We could use SetMediaType but we're just being lazy and re-using m_mt for many things I guess
m_mt = *pmt;
// The frame rate at which your filter should produce data is determined by the AvgTimePerFrame field of VIDEOINFOHEADER
if(pvi->AvgTimePerFrame)
m_rtFrameLength = pvi->AvgTimePerFrame; // allow them to set whatever fps they request, i.e. if it's less than the max default. VLC command line can specify this, for instance...
// also setup scaling here, as WFMLE and ffplay and VLC all get here...
m_rScreen.right = m_rScreen.left + pvi->bmiHeader.biWidth; // allow them to set whatever "scaling size" they want [set m_rScreen is negotiated right here]
m_rScreen.bottom = m_rScreen.top + pvi->bmiHeader.biHeight;
}
IPin* pin;
ConnectedTo(&pin);
if(pin)
{
IFilterGraph *pGraph = m_pParent->GetGraph();
HRESULT res = pGraph->Reconnect(this);
if(res != S_OK) // LODO check first, and then just re-use the old one?
return res; // else return early...not really sure how to handle this...since we already set m_mt...but it's a pretty rare case I think...
// plus ours is a weird case...
} else {
// graph hasn't been built yet...
// so we're ok with "whatever" format they pass us, we're just in the setup phase...
}
// success of some type
if(pmt == NULL) {
m_bFormatAlreadySet = false;
} else {
m_bFormatAlreadySet = true;
}
return S_OK;
}
