Auke Kok a écrit : > Jean-Francois Moine wrote: >> On Tue, 24 Feb 2009 21:19:16 -0300 >> Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> wrote: >>> On Tue, 24 Feb 2009 16:00:59 -0800 >>> Auke Kok <auke@xxxxxxxxxxxxxxxx> wrote: >>> >>>> Auke Kok wrote: >>>>> All, >>>>> >>>>> I have a "Creative Technology, Ltd Webcam Live!/Live! Pro" that >>>>> until recently worked fine with the out-of-tree gspcav1 driver >>>>> (gspcav1-20071224.tar.gz is the latest version I used unti >>>>> 2.6.26). >>>>> >>>>> Since this driver (basically) got merged in the kernel I got my >>>>> hopes up that the in-kernel gspca_zc3xx drivers would work. >>>>> However, that does not provide a usable video0 device - mplayer >>>>> tv:// crashes with 'No stream found.' for instance: >>>>> >>>>> Playing tv://. >>>>> Cache fill: 0.00% (0 bytes) >>>>> TV file format detected. >>>>> Selected driver: v4l2 >>>>> name: Video 4 Linux 2 input >>>>> author: Martin Olschewski <olschewski@xxxxxxxxxxxxxxxx> >>>>> comment: first try, more to come ;-) >>>>> Selected device: WebCam Live! >>>>> Capabilites: video capture read/write streaming >>>>> supported norms: >>>>> inputs: 0 = zc3xx; >>>>> Current input: 0 >>>>> Current format: unknown (0x4745504a) >>>>> tv.c: norm_from_string(pal): Bogus norm parameter, setting >>>>> default. v4l2: ioctl enum norm failed: Invalid argument >>>>> Error: Cannot set norm! >>>>> Selected input hasn't got a tuner! >>>>> v4l2: ioctl set mute failed: Invalid argument >>>>> v4l2: ioctl query control failed: Invalid argument >>>>> v4l2: ioctl query control failed: Invalid argument >>>>> FPS not specified in the header or invalid, use the -fps option. >>>>> No stream found. >>>>> >>>>> v4l2: ioctl set mute failed: Invalid argument >>>>> v4l2: 0 frames successfully processed, 0 frames dropped. >>>>> >>>>> Exiting... (End of file) >>>>> >>>>> >>>>> I've regressed back to the original import of the spca driver in >>>>> the kernel tree and this doesn't fix it, so I'm assuming that the >>>>> driver were not merged correctly for my particular device. >>>>> >>>>> Basically the driver probes and load fine as is right now, no >>>>> unusual message in dmesg as far as I can see: >>>>> >>>>> zc0301: V4L2 driver for ZC0301[P] Image Processor and Control >>>>> Chip v1:1.10 usbcore: registered new interface driver zc0301 >>>>> usbcore: deregistering interface driver zc0301 >>>>> gspca: probing 041e:4036 >>>>> zc3xx: probe 2wr ov vga 0x0000 >>>>> zc3xx: probe sensor -> 11 >>>>> zc3xx: Find Sensor HV7131R(c) >>>>> gspca: probe ok >>>>> usbcore: registered new interface driver zc3xx >>>>> zc3xx: registered >>>>> >>>>> >>>>> I can post the output of the gspcav1 module with debug=5 for the >>>>> register writes/reads if that is interesting, or anything else >>>>> for that matter - I'd really like to keep this webcam working and >>>>> staying at kernel 2.6.25 is not an option. >>>>> >>>>> is there a way to get the gspca_zc3xx driver dump register >>>>> read/writes? this would be a quick way to compare the two drivers >>>>> and look at the differences. >>>>> >>>> seems I just found the v4lcompat.so stuff, which (apart from being >>>> a pain in the rear) makes the webcam work again... >>> This seems to be a very common error. IMO, we should write message >>> when loading a gspca that would require libv4l in order to work. >> >> First, it is strange that mplayer does not work: the v4l2 interface >> seems recognized, but why does it say: >> >> Current format: unknown (0x4745504a) >> >> while this is JPEG and it knows well how to handle it? >> >> Then, at probe time, there is: >> >> zc0301: V4L2 driver for ZC0301[P] Image Processor and Control > > I pasted too much there, as you can see below I unloaded that driver: > > zc0301: V4L2 driver for ZC0301[P] Image Processor and Control > Chip v1:1.10 usbcore: registered new interface driver zc0301 > usbcore: deregistering interface driver zc0301 > > >> >> This means that an other driver wants to handle the webcam. This may >> raise problems. >> >> Eventually, the v4l library is needed when using any v4l2 driver, not >> only gspca. Hopefully, many popular applications now use it natively, >> as vlc 0.9.x. > > interesting, but I can't get vlc to understand either tv:// or > /dev/video0... any hints? Hi, With mplayer I use : mplayer -fps 30 -tv driver=v4l2:width=640:height=480:device=/dev/video0 tv:// and it works well with my Labtec webcam Pro : zc3xx Michel. > > Auke > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
