GEM-dev May 2009

gem-dev@lists.iem.at

14 participants
12 discussions

Force Gem software rendering?
by Frank Barknecht 12 May '09

12 May '09

Hallo, is there a way to force Gem to use software rendering, like with some environment variable? SW is currently the only way I'm able to use Gem on Matrox gfx cards (of course slowing them down even more, but at least I can see squares.) Ciao -- Frank Barknecht Do You RjDj.me? _ ______footils.org__

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uvc webcam (eee pc 900 built in) with pix_video?
by ben＠ekran.org 11 May '09

11 May '09

hey all, I'm doing a workshop in HK in about 13 days. I wanted to demo pix_video, but I can't seem to get things working on my eee pc. The device is working with v4l2, I can get a feed from mplayer with: mplayer tv:// -tv driver=v4l2:device=/dev/video0:fps=30 seems generic enough. Here is the output regarding video format: Opening video decoder: [raw] RAW Uncompressed Video VDec: vo config request - 640 x 480 (preferred colorspace: Packed YUY2) VDec: using Packed YUY2 as output csp (no 0) Movie-Aspect is undefined - no prescaling applied. VO: [xv] 640x480 => 640x480 Packed YUY2 Selected video codec: [rawyuy2] vfm: raw (RAW YUY2) I'm working with an svn copy of GEM updated yesterday. I'm configuring with: ./configure --prefix=/usr --without-libv4l1 --with-libv4l2-libs=/usr/lib/ --with-libv4l2-includes=/usr/include/ and GEM complains about the camera when I start pix_video (and I get no video image): v4l: VDIOCGCHAN: Invalid argument This device/camera must only have one channel? I can't tell if I'm using v4l1 or 2. configure tells me v4l: yes not matter if its v4l1 or v4l2 I enable. I also have a vague memory that configure should tell me what v4l its using, like: v4l: yes (libv4l2) but I can't get that output with any combination of flags. Did I imagine it? Anyhow let me know if anyone has a working uvc webcam in gem (linux-intrepid) or better yet working eeepc webcam. Thanks all. Here is a link to what I'm doing here in HK: http://www.videotage.org.hk/projects/20090514_dreamingmachine.htm I'll have to make another post about some issues with pix_crop, and pix_buffer save, which forced me to change some aspects of the project! ..b..

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GEM-dev May 2009