PAC7302 disassembly

PAC7302 disassembly

[christopherwanderson]

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 

Re: PAC7302 disassembly

[Thomas Kaiser]

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

Re: PAC7302 disassembly

[Thomas Kaiser]

Thomas Kaiser wrote:
> 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
> 
> -- 
> 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

Sorry for replying to my own post.

I forgot to tell that there is no documentation available from Pixart. I 
tried to meet them (Pixart) the last time I was in Taiwan but they 
refused to meet me :-( (Looks like they are not interested to have there 
products running with Linux)

Thomas