Re: image quality of Labtec Webcam 2200

2009-09-13 Thread Jean-Francois Moine
On Fri, 11 Sep 2009 09:09:20 +0200 Németh Márton nm...@freemail.hu wrote: You can find my results at http://v4l-test.sourceforge.net/results/test-20090911/index.html There are three types of problems: a) Sometimes the picture contains a 8x8 pixel error, like in image #9

Re: image quality of Labtec Webcam 2200

2009-09-13 Thread Németh Márton
Jean-Francois Moine wrote: On Fri, 11 Sep 2009 09:09:20 +0200 Németh Márton nm...@freemail.hu wrote: You can find my results at http://v4l-test.sourceforge.net/results/test-20090911/index.html There are three types of problems: a) Sometimes the picture contains a 8x8 pixel error, like in

Re: image quality of Labtec Webcam 2200

2009-09-13 Thread leandro Costantino
Actually it based on pac7302. Pac7311/02 also has support ( since gspca1 ). I checked some old logs of the pac, and the driver init for 7302 seems ok. The ff ff ff sequence, seems to been taken in account on conversion. (libv4lconvert) /* Special Pixart versions of the *_nbits functions, these

Re: image quality of Labtec Webcam 2200

2009-09-13 Thread Thomas Kaiser
On 09/13/2009 04:42 PM, leandro Costantino wrote: Actually it based on pac7302. Pac7311/02 also has support ( since gspca1 ). I checked some old logs of the pac, and the driver init for 7302 seems ok. The ff ff ff sequence, seems to been taken in account on conversion. (libv4lconvert) /*

Re: image quality of Labtec Webcam 2200

2009-09-13 Thread Hans de Goede
Hi, On 09/13/2009 09:20 AM, Jean-Francois Moine wrote: On Fri, 11 Sep 2009 09:09:20 +0200 Németh Mártonnm...@freemail.hu wrote: You can find my results at http://v4l-test.sourceforge.net/results/test-20090911/index.html There are three types of problems: a) Sometimes the picture contains a

Re: image quality of Labtec Webcam 2200

2009-09-13 Thread Hans de Goede
Hi, On 09/13/2009 05:59 PM, Thomas Kaiser wrote: I thought Hans will come in, in this discussion... Hey hey, its weekend, give me some time to respond already :) See my reply higher up in the thread. Regards, Hans -- To unsubscribe from this list: send the line unsubscribe linux-media

Re: image quality of Labtec Webcam 2200

2009-09-12 Thread leandro Costantino
Nice, i will take a look. Anyway, be aware, that the conversion error, is something expected on pac7311, in fact, Hans have commented that on the libv4lconvert. .. if (result) { /* Pixart webcam's seem to regulary generate corrupt frames, which are best thrown away to

Re: image quality of Labtec Webcam 2200

2009-09-12 Thread Németh Márton
leandro Costantino wrote: Nice, i will take a look. Anyway, be aware, that the conversion error, is something expected on pac7311, in fact, Hans have commented that on the libv4lconvert. .. if (result) { /* Pixart webcam's seem to regulary generate corrupt frames, which

Re: image quality of Labtec Webcam 2200

2009-09-11 Thread Németh Márton
Márton Németh wrote: Hi, I have a Labtec Webcam 2200 and I have problems with the image quality with Linux 2.6.31 + libv4l 0.6.1. I made some experiments and stored each captured image as raw data and when libv4l was able to convert then I also stored the result as bmp. You can find my

Re: image quality of Labtec Webcam 2200

2009-09-11 Thread leandro Costantino
Hi , i tested it with 2.6.31-rc9 libvl 0.6.1 + svv and cannot reproduce. 301147.626826] gspca: probing 093a:2626 [301147.641578] gspca: probe ok [301147.641607] gspca: probing 093a:2626 [301147.641770] gspca: probing 093a:2626 [301147.641829] usbcore: registered new interface driver pac7311

Re: image quality of Labtec Webcam 2200

2009-09-11 Thread leandro Costantino
Also , about the negative value. It happens to when using Pac7311 on libv4l_convert. Usually it an -EAGAIN, that should be ignored. svv application, just ignore that, and another apps take in account. But would be nice to re test your webcam to find where the real problem is. Best Regards