Real-Time Colour Grab and Display Sample Program (rtcolour) for DOS
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Version:
V3.21_3, 1997/11/06 Tested on XPG with NTSC cameras only.
Files:
rtcolour.exe - executable
rtcolour.c - main
rtcmake.bat - To make the executable
Description:
This program grabs and displays colour images as fast as possible using
XVL commands from the host. The program uses a double buffering technique
to grab and display at the same time. Images are continuously grabbed
to one frame while copying other frame to VGA.
The program has the following command line sequence. "rtsamp ?" will display
this usage message.
Usage: rtcolour -b<BusMaster> -c<CpfName> -i<IoBase>
BusMaster : PCI bus mastering mode on = 1, off = 0 (default 1)
CpfName : Camera Parameter File name (default NTSC24.CPF)
IoBase : ISA bus I/O base address (default 0x300)
More notes on command line parameters:
BusMaster: By default, bus mastering mode is used on PCI machines.
The flag is ignored on ISA or VLB systems. There must
be a memory manager running in order for this switch to
take effect. To determine if bus mastering is working,
try running the program in both modes and see if there
is a performance difference.
CpfName: Analog RS-170 is assumed if this parameter is not specified.
If the file extension is not entered, .CPF is assumed.
IoBase: This is ignored on PCI bus.
Notes on performance:
The performance of rtsamp varies widely. The grab and display can do full
frame rate with RS-170 or CCIR on most PCI bus systems. However, there
are PC configuration issues which affect performance. See the separate
note on PCI bus BIOS options.
Reducing the number of lines:
Because the program is running from the host, there is a command latency
which causes the top of frame to be missed when grabbing. In order to
get full frame rate, it is necessary to reduce the number of lines grabbed.
This is done by changing the field VVideoActive in the CPF file. The
following values should work:
RS-170: 220 (440 lines)
CCIR: 246 (492 lines)
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.