[Bug 724521] v4l2object: Inconvenient handling of V4L2_FRMSIZE_STEPWISE

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=724521
  GStreamer | gst-plugins-good | git

Tobias Wolf <towolf> changed:

           What    |Removed                     |Added
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                 CC|                            |towolf at gmail.com

--- Comment #6 from Tobias Wolf <towolf at gmail.com> 2014-03-17 12:48:01 UTC ---
I just filed bug #726521, which seems to be related to this. It regards the
Raspberry Pi camera board v4l2 driver, which introduced stepwise as well (14.9
million possible combinations). Doing this on the Raspberry Pi takes a long
time and then it fails (see my reference).


Driver Info (not using libv4l2):
    Driver name   : bm2835 mmal
    Card type     : mmal service 15.1
    Bus info      : platform:bcm2835-v4l2
    Driver version: 3.10.33
    Capabilities  : 0x85000005
        Video Capture
        Video Overlay
        Read/Write
        Streaming
        Device Capabilities
    Device Caps   : 0x05000005
        Video Capture
        Video Overlay
        Read/Write
        Streaming

    Index       : 0
    Type        : Video Capture
    Pixel Format: 'YU12'
    Name        : 4:2:0, packed YUV
        Size: Stepwise 16x16 - 2592x1944 with step 2/2

    Index       : 1
    Type        : Video Capture
    Pixel Format: 'YUYV'
    Name        : 4:2:2, packed, YUYV
        Size: Stepwise 16x16 - 2592x1944 with step 2/2

    Index       : 2
    Type        : Video Capture
    Pixel Format: 'RGB3'
    Name        : RGB24 (LE)
        Size: Stepwise 16x16 - 2592x1944 with step 2/2

    Index       : 3
    Type        : Video Capture
    Pixel Format: 'JPEG' (compressed)
    Name        : JPEG
        Size: Stepwise 16x16 - 2592x1944 with step 2/2

    Index       : 4
    Type        : Video Capture
    Pixel Format: 'H264' (compressed)
    Name        : H264
        Size: Stepwise 16x16 - 2592x1944 with step 2/2

    Index       : 5
    Type        : Video Capture
    Pixel Format: 'MJPG' (compressed)
    Name        : MJPEG
        Size: Stepwise 16x16 - 2592x1944 with step 2/2

    Index       : 6
    Type        : Video Capture
    Pixel Format: 'YVYU'
    Name        : 4:2:2, packed, YVYU
        Size: Stepwise 16x16 - 2592x1944 with step 2/2

    Index       : 7
    Type        : Video Capture
    Pixel Format: 'VYUY'
    Name        : 4:2:2, packed, VYUY
        Size: Stepwise 16x16 - 2592x1944 with step 2/2

    Index       : 8
    Type        : Video Capture
    Pixel Format: 'UYVY'
    Name        : 4:2:2, packed, UYVY
        Size: Stepwise 16x16 - 2592x1944 with step 2/2

    Index       : 9
    Type        : Video Capture
    Pixel Format: 'NV12'
    Name        : 4:2:0, packed, NV12
        Size: Stepwise 16x16 - 2592x1944 with step 2/2

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