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New media format negotiation code:

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loop through all available formats trying to
establish connection between pins.

Negotiation stops either when all formats are rejected
(error reported in this case) or when connection is
established (which can happen only when current media
format is accepted by both of the pins).



git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@25093 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
voroshil 2007-11-18 11:13:28 +00:00
parent 1e663de892
commit fa18524d05
1 changed files with 14 additions and 2 deletions
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16
stream/tvi_dshow.c
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@ -1390,19 +1390,31 @@ static HRESULT build_sub_graph(priv_t * priv, IBaseFilter * pCaptureFilter,
set_buffer_preference(20,(WAVEFORMATEX*)(arpmt[nFormatProbed]->pbFormat),pCapturePin,pSGIn);
}
for(nFormatProbed=0; arpmt[nFormatProbed]; nFormatProbed++)
{
DisplayMediaType("Probing format", arpmt[nFormatProbed]);
hr = OLE_CALL_ARGS(pSG, SetMediaType, arpmt[nFormatProbed]); //set desired mediatype
if(FAILED(hr)){
mp_msg(MSGT_TV,MSGL_DBG2,"tvi_dshow: SetMediaType(pSG) call failed. Error:0x%x\n", (unsigned int)hr);
break;
continue;
}
/* connecting filters together: VideoCapture --> SampleGrabber */
hr = OLE_CALL_ARGS(priv->pGraph, Connect, pCapturePin, pSGIn);
if(FAILED(hr)){
mp_msg(MSGT_TV,MSGL_DBG2,"tvi_dshow: Unable to create pCapturePin<->pSGIn connection. Error:0x%x\n", (unsigned int)hr);
break;
continue;
}
break;
}
OLE_RELEASE_SAFE(pSG);
if(!arpmt[nFormatProbed])
{
mp_msg(MSGT_TV, MSGL_WARN, "tvi_dshow: Unable to negotiate media format\n");
hr = E_FAIL;
break;
}
hr = OLE_CALL_ARGS(pCapturePin, ConnectionMediaType, pmt);
if(FAILED(hr))
{