Thread View: borland.public.cppbuilder.multimedia
8 messages
8 total messages
Started by user
Thu, 09 Dec 2004 17:11
select video source
Author: user
Date: Thu, 09 Dec 2004 17:11
Date: Thu, 09 Dec 2004 17:11
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I want capture video streams from four webcams, but how can we select which camera is connected to a window when we call te function capDriverConnect ? there is a multimedia funcion to select the camera? luca
Re: select video source
Author: Remy Lebeau (TeamB)
Date: Thu, 09 Dec 2004 17:29
Date: Thu, 09 Dec 2004 17:29
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<user@domain.invalid> wrote in message news:41b88723$2@newsgroups.borland.com... > I want capture video streams from four webcams, but how > can we select which camera is connected to a window when > we call te function capDriverConnect ? That is what the iIndex parameter is for. Each camera should have its own driver and thus its own index. Gambit
Re: select video source
Author: luca
Date: Thu, 09 Dec 2004 17:54
Date: Thu, 09 Dec 2004 17:54
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"Remy Lebeau (TeamB)" <no.spam@no.spam.com> ha scritto nel messaggio news:41b88bd4@newsgroups.borland.com... > > <user@domain.invalid> wrote in message > news:41b88723$2@newsgroups.borland.com... > > > I want capture video streams from four webcams, but how > > can we select which camera is connected to a window when > > we call te function capDriverConnect ? > > That is what the iIndex parameter is for. Each camera should have its own > driver and thus its own index. > > > Gambit > > Changing the iIndex I get alwais the same camera. Calling capGetDriverDescription I find two drivers with the same index Logitech USB Video Camera, Version: 5.4.4.1005 index 0 Microsoft WDM Image Capture (Win32), Version: 5.0.2195.3649 index 0 How can I create a driver for each camera? luca
Re: select video source
Author: user
Date: Thu, 09 Dec 2004 17:55
Date: Thu, 09 Dec 2004 17:55
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Remy Lebeau (TeamB) wrote: > <user@domain.invalid> wrote in message > news:41b88723$2@newsgroups.borland.com... > > >>I want capture video streams from four webcams, but how >>can we select which camera is connected to a window when >>we call te function capDriverConnect ? > > > That is what the iIndex parameter is for. Each camera should have its own > driver and thus its own index. > > > Gambit > > Changing the iIndex I get alwais the same camera. Calling capGetDriverDescription I find two drivers with the same index Logitech USB Video Camera, Version: 5.4.4.1005 index 0 Microsoft WDM Image Capture (Win32), Version: 5.0.2195.3649 index 0 How can I create a driver for each camera? luca
Re: select video source
Author: user
Date: Thu, 09 Dec 2004 17:56
Date: Thu, 09 Dec 2004 17:56
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Remy Lebeau (TeamB) wrote: > <user@domain.invalid> wrote in message > news:41b88723$2@newsgroups.borland.com... > > >>I want capture video streams from four webcams, but how >>can we select which camera is connected to a window when >>we call te function capDriverConnect ? > > > That is what the iIndex parameter is for. Each camera should have its own > driver and thus its own index. > > > Gambit > > Changing the iIndex I get alwais the same camera. Calling capGetDriverDescription I find two drivers with the same index Logitech USB Video Camera, Version: 5.4.4.1005 index 0 Microsoft WDM Image Capture (Win32), Version: 5.0.2195.3649 index 0 How can I create a driver for each camera? luca
Re: select video source
Author: Remy Lebeau (TeamB)
Date: Thu, 09 Dec 2004 19:20
Date: Thu, 09 Dec 2004 19:20
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<user@domain.invalid> wrote in message news:41b8919f@newsgroups.borland.com... > Calling capGetDriverDescription I find two drivers with the same index Very doubtful. You have to specify the index when calling capGetDriverDescription(). That same index applies to capDriverConnect() as well. The fact that you are getting different descriptions when changing the index tells you that you are accessing different cameras. Gambit
Re: select video source
Author: Remy Lebeau (TeamB)
Date: Fri, 10 Dec 2004 10:34
Date: Fri, 10 Dec 2004 10:34
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"luca" <lct@tele2.it> wrote in message news:41b96f43$1@newsgroups.borland.com... > Changing the iIndex I get alwais the same camera. > Calling capGetDriverDescription I find two drivers with the same index You are contradicting yourself. You say that different indexes return the same camera, but then you are saying that different cameras have the same index. You can't have it both ways. I already addressed this issue in another reply. Please refer to it. Gambit
Re: select video source
Author: luca
Date: Mon, 13 Dec 2004 10:42
Date: Mon, 13 Dec 2004 10:42
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We must distinguish bitween driver and source. Logitech USB Video Camera, Version: 5.4.4.1005 Microsoft WDM Image Capture (Win32), Version: 5.0.2195.3649 are two drivers, the first one from Logitech the second from Microsoft. changing the driver dont't affect the video source. the only way that I found to change the video source is to use capDlgVideoSource(), but this is a dialog window, I need to do this by the code. May be that multimedia function don't implement the specification of twain drivers? luca "luca" <lct@tele2.it> ha scritto nel messaggio news:41b96f43$1@newsgroups.borland.com... > > "Remy Lebeau (TeamB)" <no.spam@no.spam.com> ha scritto nel messaggio > news:41b88bd4@newsgroups.borland.com... > > > > <user@domain.invalid> wrote in message > > news:41b88723$2@newsgroups.borland.com... > > > > > I want capture video streams from four webcams, but how > > > can we select which camera is connected to a window when > > > we call te function capDriverConnect ? > > > > That is what the iIndex parameter is for. Each camera should have its own > > driver and thus its own index. > > > > > > Gambit > > > > > > Changing the iIndex I get alwais the same camera. > Calling capGetDriverDescription I find two drivers with the same index > > Logitech USB Video Camera, Version: 5.4.4.1005 index 0 > Microsoft WDM Image Capture (Win32), Version: 5.0.2195.3649 index 0 > > > How can I create a driver for each camera? > > > luca > > > > >
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