[libcvd-members] Problems with V4L2 and gspca driver

[Daniel Tabares Fernaud]

Hi
Fist of all, sorry for my english

I have a problem using V4l2 cameras.

I have two Creative WebCam Vista (lsusb ID 041e:405f).
When I used Ubuntu 8.04, i haven't problems using v4l1 and ov51x-jpeg driver. But this driver actually haven't support for Ubuntu 9.04 kernel (2.6.28-11. Actually, I use this distribution, and I use the gspca driver, ov519 module (http://linuxtv.org). The driver works well in most applicatons (cheese, for example), but in the example application included in libcvd, "video_play_source", executed with the following parameters:

./video_play_source v4l2:[verbose]///dev/video0

its output shows:

V4L2Client: verbose operation. Initializing
V4L2Client: Querying capabilities.
V4L2Client:    driver: ov519
V4L2Client:    card: Creative WebCam Vista
V4L2Client:    bus_info: 0000:00:13.3
V4L2Client:    version: 131840
V4L2Client:    capabilities: 0x5000001
V4L2Client:                 V4L2_CAP_VIDEO_CAPTURE        = 1
V4L2Client:                 V4L2_CAP_VIDEO_OUTPUT         = 0
V4L2Client:                 V4L2_CAP_VIDEO_OVERLAY        = 0
V4L2Client:                 V4L2_CAP_VBI_CAPTURE          = 0
V4L2Client:                 V4L2_CAP_VBI_OUTPUT           = 0
V4L2Client:                 V4L2_CAP_SLICED_VBI_CAPTURE   = 0
V4L2Client:                 V4L2_CAP_SLICED_VBI_OUTPUT    = 1
V4L2Client:                 V4L2_CAP_RDS_CAPTURE          = 0
V4L2Client:                 V4L2_CAP_VIDEO_OUTPUT_OVERLAY = 0
V4L2Client:                 V4L2_CAP_TUNER                = 1
V4L2Client:                 V4L2_CAP_AUDIO                = 0
V4L2Client:                 V4L2_CAP_RADIO                = 0
V4L2Client:                 V4L2_CAP_READWRITE            = 1
V4L2Client:                 V4L2_CAP_ASYNCIO              = 0
V4L2Client:                 V4L2_CAP_STREAMING            = 1
V4L2Client: Requested format: RGB3
V4L2Client: Enumerating formats.
V4L2Client:    Index  FourCC     Flags    Description
V4L2Client:        0   JPEG   0x00000001  JPEG
V4L2Client: Selected format: None
V4L2Client: Getting format (VIDIOC_G_FMT)
V4L2Client:    size: 640x480
V4L2Client:    format: JPEG
V4L2Client:    field flag: 1
V4L2Client:    bytes per line: 640
V4L2Client:    image size: 115790
V4L2Client:    colourspace: 7
V4L2Client: Setting format (VIDIOC_S_FMT)
V4L2Client:    size: 640x480
V4L2Client:    format: None
V4L2Client:    field flag: 0
V4L2Client:    bytes per line: 640
V4L2Client:    image size: 115790
V4L2Client:    colourspace: 7
V4L2Client: Getting format (VIDIOC_G_FMT)
V4L2Client:    size: 640x480
V4L2Client:    format: JPEG
V4L2Client:    field flag: 1
V4L2Client:    bytes per line: 640
V4L2Client:    image size: 115790
V4L2Client:    colourspace: 7
Error: V4LBuffer: "V4L2: Requested format not supported" ioctl failed on /dev/video1: Invalid argument

The VideoBuffer is VideoBuffer<Rgb<byte>>, and the camera apparently only support JPEG format.

Has the problem any solution?

Thanks

Daniel