From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?big5?q?=AA=FC=B4=BC?= Subject: OMAP 5912 Webcam Date: Mon, 13 Aug 2007 17:43:13 +0800 (CST) Message-ID: <708337.38952.qm@web73512.mail.tp2.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=big5 Content-Transfer-Encoding: quoted-printable Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-omap-open-source-bounces+gplao-linux-omap-open-source=gmane.org@linux.omap.com Errors-To: linux-omap-open-source-bounces+gplao-linux-omap-open-source=gmane.org@linux.omap.com To: linux-omap-open-source@linux.omap.com List-Id: linux-omap@vger.kernel.org Dear all, I got some problems in OMAP5912. I use the webcam Orite SC-120 webcam w= ith my OMAP5912. I use V4L library to write a program of capture(RGB Form= at)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 wid= th and height to 176 and 144. But I still got the same frame rate. I think some problem list ,but I don=A1=A6t know which one is correct. = If anyone can teach me what problem I got. =20 1. The bandwidth of OMAP5912 usb is not enough.The webcam only can u= se 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 ful= l image size(352x288) to OMAP, and downsample the image size(176x144) aft= er that. 3. I got mistake in my program of capture. =20 =20 Webcam Feature =20 Senser 1/7"CMOS 120K Pixels Video Format 24-Bit Tr= ue Color USB Inetr face Compliant to USB 2.0 and 1.1 Image Resolut= ion 640x480, 352x288, 320x240, 176x144, 160x120 Video Resolution 640= x480, 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 For= mats JPEG / BMP _________________________________________________ =A6W=BC=D2=A4d=AA=F7=AFS=A7U=BD=D6=A4~=ACO=B4I=B0=D3=AFu=B7R=A1H=A4U=A8M= =A9w=AE=B330=B8U=A1C