patch-2.4.0-test5 linux/Documentation/usb/ov511.txt
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- Lines: 35
- Date:
Tue Jul 18 22:56:27 2000
- Orig file:
v2.4.0-test4/linux/Documentation/usb/ov511.txt
- Orig date:
Fri Jul 14 12:12:04 2000
diff -u --recursive --new-file v2.4.0-test4/linux/Documentation/usb/ov511.txt linux/Documentation/usb/ov511.txt
@@ -176,6 +176,26 @@
programs that expect RGB data (e.g. gqcam) to work with this driver. If
your colors look VERY wrong, you may want to change this.
+ NAME: buf_timeout
+ TYPE: integer
+ DEFAULT: 5 (seconds)
+ DESC: Number of seconds before unused frame buffers are deallocated.
+ Previously, memory was allocated upon open() and deallocated upon
+ close(). Deallocation now occurs only if the driver is closed and this
+ timeout is reached. If you are capturing frames less frequently than
+ the default timeout, increase this. This will not make any difference
+ with programs that capture multiple frames during an open/close cycle.
+
+ NAME: cams
+ TYPE: integer (1-4 for OV511, 1-31 for OV511+)
+ DEFAULT: 1
+ DESC: Number of cameras allowed to stream simultaneously on a single bus.
+ Values higher than 1 reduce the data rate of each camera, allowing two
+ or more to be used at once. If you have a complicated setup involving
+ both OV511 and OV511+ cameras, trial-and-error may be necessary for
+ finding the optimum setting.
+
+
WORKING FEATURES:
o Color streaming/capture at 640x480, 448x336, 384x288, 352x288, and 320x240
o YUV420 and YUV422P color
@@ -210,7 +230,6 @@
o Get rid of the memory management functions (put them in videodev.c??)
o Setting of contrast and brightness not working with 7620
o Driver/camera state save/restore for when USB supports suspend/resume
- o Multiple cameras reportedly do not work simultaneously
o Unstable on SMP systems
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TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)