Re: Topro 6800 driver [JPEG decoding solved]

[Thomas Kaiser <v4l@xxxxxxxxxxxxxxx>]

Hello Anders

Good news, I could decode a frame which I extracted from the usbsnoobs I 
did :-). See attached picture frame3-03.jpg. It uses the quality 0.

Your black frame you sent me gets now correctly decode, too (frameA-01.jpg)

I found the Huffman table in the Windoz driver file (TP6810.sys) at 
offset 0x2a59c. The QTable which I found in a text file on my Windoz box 
can be found in this driver file, also.

I attached some binary files which I used to build the 2 attached jpeg.

For example use:
cat FFD8-Q0-320x240.bin huffman1.bin FFDA.bin frame3-3.bin >frame3-03.jpg
to make the picture frame3-03.jpg.

This information should the cam get going in Linux ;-)

Happy Hacking,

Thomas

PS: I sent this to the linux-media mail list, because somebody else is 
interested about this information, too.

Attachment: FFD8-Q0-320x240.bin
Description: Binary data

Attachment: FFD8-Q0-640x480.bin
Description: Binary data

Attachment: FFD8-Q1-320x280.bin
Description: Binary data

Attachment: FFD8-Q1-640x480.bin
Description: Binary data

Attachment: FFDA.bin
Description: Binary data

Attachment: huffman1.bin
Description: Binary data

Attachment: frame3-3.bin
Description: Binary data