[libdc] image size differs before and after dc1394_capture_setup

[Maarten V. <maa...@gm...>]

Hi,

another problem I regularly encounter with my AVT F-201C is the following.

1. Take the grab_partial_image.c example
2. Add some lines of code in the initialization:

     dc1394video_mode_t video_mode = DC1394_VIDEO_MODE_FORMAT7_0;
err = dc1394_format7_set_roi_mine(camera, video_mode,
                                 DC1394_COLOR_CODING_MONO8,
                                 DC1394_USE_MAX_AVAIL, // use max packet size
                                 0, 0, // left, top
                                 640, 480);  // width, height
    DC1394_ERR_RTN(err,"Unable to set Format7 mode 0.\nEdit the
example file manually to fit your camera capabilities");

    dc1394_format7_get_image_size(camera, video_mode, &w, &h);
    printf("Image size: %d %d\n", w, h);

    err=dc1394_capture_setup(camera, 15, DC1394_CAPTURE_FLAGS_DEFAULT);
    DC1394_ERR_CLN_RTN(err, dc1394_camera_free(camera), "Error capturing");

    dc1394_format7_get_image_size(camera, video_mode, &w, &h);
    printf("Image size: %d %d\n", w, h);