Video Capture
in [Device Drivers]
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From: Rotem on 17 Aug 2005 11:01 Hi, I'm new to device drivers. I want to write a driver that captures the PC screen (or another window) and sends the raw video to a hardware dvice via the USB or PCI bus. All video capture examples that I have seen show video capture from the external hardware into the PC (for render or storage). I need the opposite direction. Shoud I write an AVStream or a PCI/USB miniport driver as I'm targeting the A/V out of the PC via these buses? Thanks in advance, Rotem
From: Maxim S. Shatskih on 19 Aug 2005 03:23 I see 3 modules in this: - screen capture - USB hardware driver - the app which will run the pipeline -- Maxim Shatskih, Windows DDK MVP StorageCraft Corporation maxim(a)storagecraft.com http://www.storagecraft.com "Rotem" <Rotem(a)discussions.microsoft.com> wrote in message news:4A0E6F5B-FBF9-4AF7-ABFD-4DE08D35F2A7(a)microsoft.com... > Hi, > > I'm new to device drivers. > I want to write a driver that captures the PC screen (or another window) and > sends the raw video to a hardware dvice via the USB or PCI bus. > All video capture examples that I have seen show video capture from the > external hardware into the PC (for render or storage). I need the opposite > direction. > Shoud I write an AVStream or a PCI/USB miniport driver as I'm targeting the > A/V out of the PC via these buses? > > Thanks in advance, > Rotem
From: Lev Kazarkin on 20 Aug 2005 15:07 Hi, Rotem I agree with Maxim. As we're talking about a screen capture, a mirror driver could be a good idea. -- Best regards, Lev Kazarkin http://www.demoforge.com "Maxim S. Shatskih" wrote: > I see 3 modules in this: > - screen capture > - USB hardware driver > - the app which will run the pipeline > > -- > Maxim Shatskih, Windows DDK MVP > StorageCraft Corporation > maxim(a)storagecraft.com > http://www.storagecraft.com > > "Rotem" <Rotem(a)discussions.microsoft.com> wrote in message > news:4A0E6F5B-FBF9-4AF7-ABFD-4DE08D35F2A7(a)microsoft.com... > > Hi, > > > > I'm new to device drivers. > > I want to write a driver that captures the PC screen (or another window) and > > sends the raw video to a hardware dvice via the USB or PCI bus. > > All video capture examples that I have seen show video capture from the > > external hardware into the PC (for render or storage). I need the opposite > > direction. > > Shoud I write an AVStream or a PCI/USB miniport driver as I'm targeting the > > A/V out of the PC via these buses? > > > > Thanks in advance, > > Rotem > > >
From: Maxim S. Shatskih on 22 Aug 2005 14:00 For what? The stupid Video For Windows DLL which does BitBlt from the screen to its own memory is simpler and does the task. -- Maxim Shatskih, Windows DDK MVP StorageCraft Corporation maxim(a)storagecraft.com http://www.storagecraft.com "Lev Kazarkin" <mirrdrv(a)demoforge.com> wrote in message news:AD468C46-31E4-4860-9989-539C4CF7E1B2(a)microsoft.com... > Hi, Rotem > > I agree with Maxim. > As we're talking about a screen capture, > a mirror driver could be a good idea. > > -- > Best regards, > Lev Kazarkin > http://www.demoforge.com > > > > "Maxim S. Shatskih" wrote: > > > I see 3 modules in this: > > - screen capture > > - USB hardware driver > > - the app which will run the pipeline > > > > -- > > Maxim Shatskih, Windows DDK MVP > > StorageCraft Corporation > > maxim(a)storagecraft.com > > http://www.storagecraft.com > > > > "Rotem" <Rotem(a)discussions.microsoft.com> wrote in message > > news:4A0E6F5B-FBF9-4AF7-ABFD-4DE08D35F2A7(a)microsoft.com... > > > Hi, > > > > > > I'm new to device drivers. > > > I want to write a driver that captures the PC screen (or another window) and > > > sends the raw video to a hardware dvice via the USB or PCI bus. > > > All video capture examples that I have seen show video capture from the > > > external hardware into the PC (for render or storage). I need the opposite > > > direction. > > > Shoud I write an AVStream or a PCI/USB miniport driver as I'm targeting the > > > A/V out of the PC via these buses? > > > > > > Thanks in advance, > > > Rotem > > > > > >
From: Lev Kazarkin on 24 Aug 2005 13:06
Its simple, Maxim. Performance. Mirror driver gives an ability to see where the screen or a window is changed. The traffic may be reduced 100 or 1000 times. Btw, no Video 4 windows or AVStream is needed for the task. For what?! -- Best regards, Lev Kazarkin http://www.demoforge.com "Maxim S. Shatskih" wrote: > For what? The stupid Video For Windows DLL which does BitBlt from the > screen to its own memory is simpler and does the task. > > -- > Maxim Shatskih, Windows DDK MVP > StorageCraft Corporation > maxim(a)storagecraft.com > http://www.storagecraft.com > > "Lev Kazarkin" <mirrdrv(a)demoforge.com> wrote in message > news:AD468C46-31E4-4860-9989-539C4CF7E1B2(a)microsoft.com... > > Hi, Rotem > > > > I agree with Maxim. > > As we're talking about a screen capture, > > a mirror driver could be a good idea. > > > > -- > > Best regards, > > Lev Kazarkin > > http://www.demoforge.com > > > > > > > > "Maxim S. Shatskih" wrote: > > > > > I see 3 modules in this: > > > - screen capture > > > - USB hardware driver > > > - the app which will run the pipeline > > > > > > -- > > > Maxim Shatskih, Windows DDK MVP > > > StorageCraft Corporation > > > maxim(a)storagecraft.com > > > http://www.storagecraft.com > > > > > > "Rotem" <Rotem(a)discussions.microsoft.com> wrote in message > > > news:4A0E6F5B-FBF9-4AF7-ABFD-4DE08D35F2A7(a)microsoft.com... > > > > Hi, > > > > > > > > I'm new to device drivers. > > > > I want to write a driver that captures the PC screen (or another window) > and > > > > sends the raw video to a hardware dvice via the USB or PCI bus. > > > > All video capture examples that I have seen show video capture from the > > > > external hardware into the PC (for render or storage). I need the > opposite > > > > direction. > > > > Shoud I write an AVStream or a PCI/USB miniport driver as I'm targeting > the > > > > A/V out of the PC via these buses? > > > > > > > > Thanks in advance, > > > > Rotem > > > > > > > > > > > > |