From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp0.lie-comtel.li ([217.173.238.80]:61793 "EHLO smtp0.lie-comtel.li" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752977AbZBAU7u (ORCPT ); Sun, 1 Feb 2009 15:59:50 -0500 Message-ID: <49860A9F.4030802@kaiser-linux.li> Date: Sun, 01 Feb 2009 21:48:31 +0100 From: Thomas Kaiser MIME-Version: 1.0 To: christopherwanderson@columbus.rr.com CC: linux-media@vger.kernel.org Subject: Re: PAC7302 disassembly References: <20090131211750.RNQ9B.74301.root@hrndva-web09-z01> In-Reply-To: <20090131211750.RNQ9B.74301.root@hrndva-web09-z01> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: christopherwanderson@columbus.rr.com wrote: > Can I get as much disassembly of the PAC7302 drivers with your comments next to > it? I am trying to improve my webcam and currently disassembling the driver, in > Vista64 with IDA Pro. (I still have the 32 bit driver files as I upgraded from > xp32) > I am helping on the gAIM/Pidgin voice/video chat and this driver isn't where I > would like it to be. I need better color balance, even after changing alot of > options I still turn out orange quite a bit. > I have Assembly expierence, I own the Intel Instruction Manuals, so figuring out > the actual given driver with a little bit of help based on the current progress > should not be difficult > Christopher W. Anderson > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html Hello Christopher Thanks for posting to linux-media@vger.kernel.org. As I wrote you back on the private mail you send me, I don't really understand what you try to tell or ask me! What do you mean with "disassembly"? Converting the binary Windoz drive to assemble code? Or looking with a hex editor into the Windowz driver and figure out what the opcode is doing? The PAC7302 Linux driver was develop by re-engineering the Windoz drive with the help of usb snoop. Usb snoop (http://benoit.papillault.free.fr/usbsnoop/) is a program which can log the usb traffic on a Windoz box. By looking at this logs, I could figure out how to control the cam (PAC7302 bridge). To find out the compression Pixart is using in this chip was a long journey, too. I suggest you get the newest driver from linuxtv.org or from Jean-Francois Moine site (http://moinejf.free.fr/). Don't forget to get the newest libv4l lib from Hans de Geode. After you installed this and tested the webcam, please report back how the driver is working. Anyway, when you are able to disassemble the Windowz drive, please post your results here. There are some people around here how can comment your outcome. Thomas