[SOLVED]
Paulo,
You were damn right!!!! It was a question of USB port. I tried again on an
USB 2.0 port, here is my new results:
{ pixelformat = 'YUYV', description = 'YUV 4:2:2 (YUYV)' }
{ discrete: width = 160, height = 120 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 176, height = 144 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 352, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 640, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 600 }
Time interval between frame: 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 720 }
Time interval between frame: 1/10, 1/5,
{ discrete: width = 1600, height = 1200 }
Time interval between frame: 1/5,
Exactly what I needed :)
I might post a new message, to know if it is possible to configure or to
hack the driver to get high resolution with high FPS or if it is a
hardware problem?!
Thank you very much again,
Best Regards,
Cédric Lescop
On Thu, March 19, 2009 21:33, Paulo Assis wrote:
> Cédric,
> I think I failed to see the obvious.
>
>
> Make sure your camera is connected to a USB2 hub.
> Logitech cameras (and maybe all uvc devices) cut down available
> resolutions when pluged to a slower USB1 pipe.
>
>
> Best regards,
> Paulo
>
>
> 2009/3/19 <lesc...@esiee.fr>
>
>
>> Paulo,
>>
>>
>>
>> Here what I have from "luvcview -L":
>>
>>
>> luvcview version 0.2.1 Video driver: x11
>> A window manager is available
>> video /dev/video0 /dev/video0 does not support read i/o
>> { pixelformat = 'MJPG', description = 'MJPEG' }
>> { discrete: width = 160, height = 120 }
>> Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
>> { discrete: width = 176, height = 144 }
>> Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
>> { discrete: width = 320, height = 240 }
>> Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
>> { discrete: width = 352, height = 288 }
>> Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
>> { discrete: width = 640, height = 480 }
>> Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
>> { discrete: width = 800, height = 600 }
>> Time interval between frame: 1/15, 1/10, 1/5,
>> { pixelformat = 'YUYV', description = 'YUV 4:2:2 (YUYV)' }
>> { discrete: width = 160, height = 120 }
>> Time interval between frame: 1/15, 1/10, 1/5,
>> { discrete: width = 176, height = 144 }
>> Time interval between frame: 1/15, 1/10, 1/5,
>>
>>
>>
>> Does it mean I can't make it work under Linux? I know the webcam can go
>> till 1600x1200 under MS Window with Logitech owner's drivers... Is
>> there anything I could modify or configure to work it out?
>>
>>
>> Regards,
>>
>>
>>
>> Cédric Lescop
>>
>>
>>
>>
>>
>> On Thu, March 19, 2009 16:03, Paulo Assis wrote:
>>
>>> Cédric,
>>> Have you tried listing the device formats:
>>> use "luvcview -L" or "guvcview --verbose" any of these commands should
>>> print a list of available formats for your device
>>>
>>> Best regards,
>>> Paulo
>>>
>>>
>>>
>>> lesc...@esiee.fr escreveu:
>>>> Hi Paulo,
>>>>
>>>>
>>>>
>>>>
>>>> I inserted you code into mine. I set:
>>>> formatIn = V4L2_PIX_FMT_YUYV width = 640 height = 480 fps = 30
>>>>
>>>> The result is:
>>>> "Requested Format unavailable: get width 176 height 144"
>>>>
>>>>
>>>>
>>>> Like I usually got :(
>>>> Thank you for trying to help me anyway,
>>>>
>>>>
>>>>
>>>>
>>>> Cédric Lescop
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Thu, March 19, 2009 10:25, Paulo Assis wrote:
>>>>
>>>>
>>>>
>>>>> Cédric Hi,
>>>>> Could you pleaser try the following function, you will have to
>>>>> make the necessary adaptations to your code.
>>>>>
>>>>>
>>>>> int set_format(int fd, int formatIn, int width, int height, int
>>>>> fps) {
>>>>> struct v4l2_format fmt; struct v4l2_streamparm streamparm; int
>>>>> ret=0;
>>>>>
>>>>> // set format
>>>>> fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; fmt.fmt.pix.width = width;
>>>>> fmt.fmt.pix.height = height; fmt.fmt.pix.pixelformat = formatIn;
>>>>> fmt.fmt.pix.field = V4L2_FIELD_ANY;
>>>>>
>>>>> ret = ioctl(fd, VIDIOC_S_FMT, &fmt); if (ret < 0) {
>>>>> fprintf(stderr, "VIDIOC_S_FORMAT - Unable to set format\n");
>>>>> return (-1); } if ((fmt.fmt.pix.width != width) ||
>>>>> (fmt.fmt.pix.height != height)) {
>>>>> fprintf(stderr, "Requested Format unavailable: get width %d height
>>>>> %d
>>>>> \n",
>>>>> fmt.fmt.pix.width, fmt.fmt.pix.height); return(-2); }
>>>>>
>>>>>
>>>>> streamparm.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
>>>>> streamparm.parm.capture.timeperframe.numerator = 1;
>>>>> streamparm.parm.capture.timeperframe.denominator = fps; ret =
>>>>> ioctl(fd,VIDIOC_S_PARM, &streamparm); if (ret < 0) {
>>>>> fprintf(stderr, "VIDIOC_S_PARM error\n"); return (-3); }
>>>>> return (0); }
>>>>>
>>>>>
>>>>> Best regards,
>>>>> Paulo
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> lesc...@esiee.fr escreveu:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> This is my problem, I don't have any errors. V4L2 API says that
>>>>>> when you ask for a Width and Heigth, the driver will give you
>>>>>> the max ones below the values you asked for. Meaning if you ask
>>>>>> for 817x616, it will
>>>>>> set 800x600 without returning any errors.
>>>>>>
>>>>>>
>>>>>>
>>>>>> My DMESG (no pb, I have got my "/dev/video0"):
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> usb 1-2: new full speed USB device using ohci_hcd and address 3
>>>>>> usb 1-2:
>>>>>> configuration #1 chosen from 1 choice uvcvideo: Found UVC 1.00
>>>>>> device <unnamed> (046d:0991) input: UVC Camera (046d:0991) as
>>>>>> /devices/pci0000:00/0000:00:02.2/usb1/1-2/1-2:1.0/input/input9
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> An extract of my code, taken from the web (Capture.c):
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> CLEAR (fmt);
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; if (-1 == xioctl (fd,
>>>>>> VIDIOC_G_FMT, &fmt))
>>>>>> errno_exit ("VIDIOC_G_FMT");
>>>>>>
>>>>>> fmt.fmt.pix.width = WB_FRAME_WIDTH; // 800
>>>>>> fmt.fmt.pix.height = WB_FRAME_HEIGHT; // 600
>>>>>> fmt.fmt.pix.pixelformat = WB_COLOR_FORMAT; // YUYV which is
>>>>>> perfect for me fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
>>>>>>
>>>>>> // Note VIDIOC_S_FMT may change width and height
>>>>>> // So I check the *new* values
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> fprintf (stderr, "width: %d\n" "height: %d\n",
>>>>>> fmt.fmt.pix.width, fmt.fmt.pix.height);
>>>>>>
>>>>>>
>>>>>> It prints 176 by 144! What am I doing wrong?
>>>>>> (later, I check the buffer size allocated via MMAP: 50688 => 176
>>>>>> x 144 x
>>>>>> 2)
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Any ideas? Where could be the problem?
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Regards,
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Cédric Lescop
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Wed, March 18, 2009 13:52, Laurent Pinchart wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Monday 16 March 2009 14:43:35 lesc...@esiee.fr wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> Hello everyone,
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> I'm using this webcam to do some streaming and image
>>>>>>>> analysis. When using Logitech's driver under MS Window, it
>>>>>>>> works fine. I've
>>>>>>>> access to all resolutions with the RGB24 format.
>>>>>>>>
>>>>>>>>
>>>>>>> The camera doesn't support the RGB24 format natively.
>>>>>>> Transcoding
>>>>>>> has to be done in software. libv4l2 can help you there.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> The problem is when running under Linux. I'm using uvcvideo
>>>>>>>> driver via V4L2 but I can't make it work properly. The
>>>>>>>> resolution gets stuck to 176x144 and the format is YUYV.
>>>>>>>>
>>>>>>>> Normally, the webcam is supposed to support a 1600x1200
>>>>>>>> resolution, how can I set it up correctly?
>>>>>>>>
>>>>>>>>
>>>>>>> You should be able to use higher resolutions. Can you
>>>>>>> describe your problem in details, including the steps
>>>>>>> performed and the error messages being printed ?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> Thank you in advance,
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> xioctl (fd, VIDIOC_ENUM_FMT, &fdq)
>>>>>>>>
>>>>>>>> returns me 2 formats only: MJPEG and YUYV. YUYV is fine for
>>>>>>>> me but I can't reach 1600x1200, or 800x600 or even not
>>>>>>>> 320x240!!!!
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>> Best regards,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Laurent Pinchart
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> _______________________________________________
>>>>>> Linux-uvc-devel mailing list
>>>>>> Linux-uvc-devel@lists.berlios.de
>>>>>> https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>> _______________________________________________
>>>>> Linux-uvc-devel mailing list
>>>>> Linux-uvc-devel@lists.berlios.de
>>>>> https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>>
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