Labtec Webcam 1200 not supported, patch incl.

[Ingo Breßler]

Binary package hint: linux-ubuntu-modules-2.6.22-14-generic

The webcam is recognized as usb device (syslog), but thats all, nothing loaded beyond this.

$ lsusb
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 002: ID 093a:2464 Pixart Imaging, Inc.
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 003: ID 046d:c040 Logitech, Inc.
Bus 001 Device 001: ID 0000:0000

(the logitech device is my mouse and/or keyboard ...)

The ouput of 'lsusb -s 2:2 -v' can be found here:
http://www.wollsau.de/gspca/labtec1200_lsusb.txt.gz

Based on this source package [linux-ubuntu-modules-2.6.22_2.6.22-14.37.tar.gz]:
http://packages.ubuntu.com/gutsy/source/linux-ubuntu-modules-2.6.22
.. I made a patch which adds the corresponding device and vendor IDs to gspca_core.c
(But gspca is still not loaded if the cam is plugged in, I don't know where this can be fixed.)

http://www.wollsau.de/gspca/linux-ubuntu-modules-2.6.22_2.6.22-14.37_Labtec1200.patch.gz

--- linux-ubuntu-modules-2.6.22-2.6.22/ubuntu/media/gspcav1/gspca_core.c 2007-01-10 22:22:01.000000000 +0100
+++ linux-ubuntu-modules-2.6.22-2.6.22_mod/ubuntu/media/gspcav1/gspca_core.c 2008-01-12 14:22:01.000000000 +0100
@@ -365,6 +365,7 @@
  PcCam350,
  PAC207,
  QtecWb100,
+ Labtec1200,
  GeniusGe111,
  Vimicro303b,
  CyberpixS550V,
@@ -547,6 +548,7 @@
  {PcCam350, "PC-Cam350"},
  {PAC207, "Pixart PAC207-BCA"},
  {QtecWb100, "Qtec Webcam 100"},
+ {Labtec1200, "Labtec Webcam 1200"},
  {GeniusGe111, "Genius VideoCam Ge111"},
  {Vimicro303b, "Generic Vimicro 303b"},
  {CyberpixS550V, "Mercury Cyberpix S550V"},
@@ -731,6 +733,7 @@
  {USB_DEVICE(0x093a, 0x2468)}, /* PAC207 */
  {USB_DEVICE(0x093a, 0x2471)}, /* PAC207 Genius VideoCam ge111 */
  {USB_DEVICE(0x093a, 0x2460)}, /* PAC207 Qtec Webcam 100 */
+ {USB_DEVICE(0x093a, 0x2464)}, /* Labtec Webcam 1200 */
  {USB_DEVICE(0x0733, 0x3281)}, /* Cyberpix S550V */
  {USB_DEVICE(0x093a, 0x2470)}, /* Genius GF112 */
  {USB_DEVICE(0x046d, 0x08a6)}, /* Logitech QCim */
@@ -3856,6 +3859,11 @@
    spca50x->bridge = BRIDGE_PAC207;
    spca50x->sensor = SENSOR_PAC207;
    break;
+ case 0x2464:
+ spca50x->desc = Labtec1200;
+ spca50x->bridge = BRIDGE_PAC207;
+ spca50x->sensor = SENSOR_PAC207;
+ break;
   case 0x2468:
    spca50x->desc = PAC207;
    spca50x->bridge = BRIDGE_PAC207;

I am not sure if this is everything which is needed (to make this 'round') but the cam works this way.
In camorama with inverted colors (fixed by force_rgb=1 module option) using 176x144 at ~20fps. At 352x288 its slower (~9fps).

I'm also unsure if the rather slow speed in general is common to all those 'ultra cheap' cams or if this can be tuned inside the driver ...

ingo.

[Ingo Breßler (ibressler)]

sorry, i'm new to launchpad, I didn't know about the attachment form ...

[Ingo Breßler (ibressler)]

forgot to mention that the frame-rate improves with autoexposure off (autoexpo=0 module option), just because I lost some words about speed above

[Ingo Breßler (ibressler)]

There is one issue left, I have with this cam:
In the images is a 2 pixel wide column on the left side which seems to be flipped over from the right side of the image. I attached an image snapped in camorama 0.19 and using the module options autoexpo=0 force_rgb=1.
I get this kind of 'border' also with my own simple v4l app and force_rgb=0 using VIDEO_PALETTE_RGB24 or VIDEO_PALETTE_YUV420P.

I experimented with the start positions inside bayer_decode() and pixart_decompress(), but no success so far ..

[Tim Gardner (timg-tpi)]

Patch applied.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-ubuntu-modules-2.6.24 - 2.6.24-8.13

---------------
linux-ubuntu-modules-2.6.24 (2.6.24-8.13) hardy; urgency=low

  [Chuck Short]

  * Update drbd to 8.0.11

  [Soren Hansen]

  * Update open-vm-tools to 2008.01.23-74039

  [Stefan Bader]

  * Add tp_smapi support.

  [Tim Gardner]

  * ALSA 1.0.16 (released version)
  * Fix powerpc64-smp FTBS by disabling ALSA.
  * Disabled ia64 CONFIG_PRISM2_USB to fix FTBS.
  * Add Labtec Webcam 1200 support
    - LP: #182329
  * Restore support for special buttons on Fujitsu tablets
    - LP: #181889
  * Added stk11xx USB video driver
  * Quirk support for Fujitsu Siemens MS-7031 ac97 codec
    - LP: #176110

 -- Tim Gardner <email address hidden> Thu, 07 Feb 2008 18:43:14 -0700