Apparently, my problem was that my GUI program did CoInitialize and this prevented the one in the dshow_dev.c from working. Removing the CoInitialize in the GUI solved my problem.
I have added some code to the "dshow_factory_init" to alert about such an event, so I save some debugging days from my fellow programmers:
/* API: init factory */
static pj_status_t dshow_factory_init(pjmedia_vid_dev_factory *f)
{
??? HRESULT hr;
??? hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
??? if (FAILED (hr)) {
??? ??? char msg[80];
??? ??? if (AMGetErrorText(hr, msg, sizeof(msg)))
??? ??? ??? PJ_LOG(4,(THIS_FILE, "****? Unable to CoInitizeEx!? ******: %s (hr=0x%x)", msg, hr));
??? ??? else PJ_LOG(4,(THIS_FILE, "****? Unable to CoInitizeEx!? ******: (hr=0x%x)", hr));
??? ??? PJ_ASSERT_RETURN(0, PJ_ECANCELLED);
??? }
???
??? return dshow_factory_refresh(f);
}
--- On Thu, 12/29/11, mik <rivael_il at yahoo.com> wrote:
From: mik <rivael_il@xxxxxxxxx>
Subject: Crash on pjvideo
To: "pjsip list" <pjsip at lists.pjsip.org>
Date: Thursday, December 29, 2011, 4:13 PM
Hello,
When the built-in camera is not instantiated a crash occur at:
IMediaFilter_Stop(stream->dgraph.media_filter); because the pointer is null.
I have change the code to:
if (stream->dgraph.media_filter)
????? IMediaFilter_Stop(stream->dgraph.media_filter);
and this solve the crash.
I still have the problem of not able to render/filter the camera. The error messages are:
22:28:51.500??? pjsua_vid.c? .......Setting up TX..
22:28:51.500??? pjsua_vid.c? ........Creating video window: type=preview, cap_id=0, rend_id=2
22:31:50.796???? vid_port.c? .........Opening device Integrated Webcam [dshow] for capture: format=YUY2, size=352x288 @30000:1001 fps
22:32:36.937??? dshow_dev.c? .........Error
creating filter graph: CoInitialize has not been called.? (hr=0x800401f0)
22:32:36.937??? dshow_dev.c? .........Trying to open dshow dev with default fps
22:32:36.937??? dshow_dev.c? .........Error creating filter graph: CoInitialize has not been called.? (hr=0x800401f0)
22:32:36.937??? dshow_dev.c? .........Trying to open dshow dev with default size & fps
22:32:36.937??? dshow_dev.c? .........Error creating filter graph: CoInitialize has not been called.? (hr=0x800401f0)
22:32:50.000??? dshow_dev.c? .........Stopping dshow video stream
22:33:37.281???? vid_port.c? .........Closing Integrated Webcam..
22:33:53.453??? pjsua_vid.c? .........Window 1: destroying..
22:34:33.359? pjsua_media.c? .......Error updating media call00:1: Unknown Error
(PJ_EUNKNOWN)
(CoInitialize HAS been called.)
Any idea?
Thanks,
Michael
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