OMAP 5912 Webcam

[阿智 <aceraspire1200@yahoo.com.tw>]

Dear all,
  I got some problems in OMAP5912. I use the webcam Orite SC-120 webcam with my OMAP5912. I use V4L library to write a program of capture(RGB Format)to test the webcam ,but I got a low frame rate about 3 frame/s(352x288).
  I hope to achieve 15 (f/s) frame rate, so I set the webcam sequence width and height to 176 and 144. But I still got the same frame rate.
  I think some problem list ,but I don’t know which one is correct. If anyone can teach me what problem I got.
   
  1.    The bandwidth of OMAP5912 usb is not enough.The webcam only can use RGB format to capture.
  2.    I set the lower width and height to capture for faster frame rate. But I still got the same frame rate. whether the webcam capture the full image size(352x288) to OMAP, and downsample the image size(176x144) after that.
  3.    I got mistake in my program of capture.
     
   
  Webcam Feature
   
                  Senser  1/7"CMOS 120K Pixels    Video Format  24-Bit True Color    USB Inetr face  Compliant to USB 2.0 and 1.1    Image Resolution  640x480, 352x288, 320x240, 176x144, 160x120    Video Resolution  640x480, 352x288, 320x240, 176x144, 160x120    Frame rate  VGA 640x480 @ 30 frame rate per second    Adjustable Focus  3 CM to Infinity    Automatic White Balance  Yes    Automatic Exposure  Yes    Automatic Compensation  Yes    Store Digital Videos Formats  AVI / WMV    Store Digital Photo Formats  JPEG / BMP


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