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Old 19-12-2010, 10:10   #35
tvvee
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Join Date: Dec 2010
Posts: 100
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A Question to a driver

Good morning

First of all

I translate this text with the Googe translation... So you dont have to wonder about the Englisch

I found this driver in WinDDK by Microsoft and now have a Fraage it. His name is testcap.

It says yes

Quote:

The driver simulates the front-end components of a PC / TV, including input selection, TvTuning, TvAudio control, and digital video streaming

Does that mean I can simulate an entire TV with this driver or the driver of my beret is on the computer all TV functions like a real TV?

So I then all TV functions e.g. mitdem Windows can use Media Center in Windows 7?

I request explanation .. For obwoh I am good in English and the meaning of the driver I would have interpreted the safe side befor I try out the driver for me to ask here nochals. One probably I have interpreted the meaning of the driver, too wrong ..

Thanks for your reply.





Testcap is a sample WDM stream class video capture driver that does not require any hardware for operation. The driver simulates the front-end components of a PC / TV, including input selection, TvTuning, TvAudio control, and digital video streaming. You can use TestCap as a prototype for developing your own mini kernel streaming driver.
The component supports TvTuner tuning modes of analog TV (NTSC / PAL / SECAM), AM / FM radio, and ATSC (American Broadcast Digital Television).
Testcap appears in a DirectShow graph as four separate filters:

* Testcap Capture
* Testcap TvTuner
* Testcap TVAudio
* Testcap Crossbar

The capture filter output produces five streams, two of Which are Capture and Preview, Which produce a variety of color bars and grayscale patterns Depending on the selected video input on the crossbar. The capture and preview streams contain video samples in either YUV422 or RGB24 color spaces and offer a large number of different image dimensions. The other three streams are capture VBI (vertical blanking interval), HWCC (hardware closed captioning), and HWNABTS (hardware-North American Basic Teletext Specification). These three are VBI streams, and offer CC and NABTS simulated waveforms for decoding, and simulated hardware-decoded CC and NABTS.
TestCap contains sample implementations for almost all of the kernel streaming property sets involved in WDM video capture. Most of the property set implementations are useful only as prototypes, Which you can borrow for your own implementations because Testcap does not control actual hardware.
TestCap represents one extreme of combining all functionality representing the front end of a PC / TV into a single driver. The other extreme is to create a separate driver for each element: TvTuner, TvAudio, crossbar, and capture.
USING THE SAMPLE
The sample is completely contained TestCap in one directory. Build the sample with the standard DDK build utility. You may build the sample in either a checked or free build environment DDK. TestCap compiles for Windows 98 and later, and Windows 2000 and later operating systems. The sample then compiles for 64-bit Windows platforms. The Resulting binary from the build process is Testcap.sys, Which is compatible on x86 and Alpha platforms.
Testcap is not a PnP driver, and because no hardware is involved you must manually install it:

* Right-click My Computer and select Properties. Select the Hardware tab. Then select the Hardware Wizard and then add new hardware.
* Click Next when you see "To install hardware Which is not Plug and Play compatible, click Next."
* Select "No, I want to select the hardware from a list."
* When you see "What type of hardware do you want to install", select Sound, Video, and Game Controllers.
* Select "Have Disk .."
* Browse to "Testcap.inf.
* Browse to "Testcap.sys" when requested.

TestCap has been tested with the following applicatons: graphedt.exe, AMCap.exe, and WebTV for Windows.
The Windows Hardware and Driver Central website contains general information on driver and hardware development.
The website contains information on Microsoft DirectX DirectShow.
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