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megapixels
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Added debugging output to FMT ioctls

This commit is contained in:
Martijn Braam 2020-01-24 02:01:22 +01:00
parent b5c348a042
commit 9fc697315b
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GPG Key ID: C4280ACB000B060F
1 changed files with 13 additions and 1 deletions
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14
main.c
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@ -219,21 +219,33 @@ init_device(int fd)
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE, .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
}; };
if (preview_width > 0) { if (preview_width > 0) {
g_printerr("Setting camera to %dx%d fmt %d",
preview_width, preview_height, preview_fmt);
fmt.fmt.pix.width = preview_width; fmt.fmt.pix.width = preview_width;
fmt.fmt.pix.height = preview_height; fmt.fmt.pix.height = preview_height;
fmt.fmt.pix.pixelformat = preview_fmt; fmt.fmt.pix.pixelformat = preview_fmt;
fmt.fmt.pix.field = V4L2_FIELD_INTERLACED; fmt.fmt.pix.field = V4L2_FIELD_ANY;
if (xioctl(fd, VIDIOC_S_FMT, &fmt) == -1) { if (xioctl(fd, VIDIOC_S_FMT, &fmt) == -1) {
errno_exit("VIDIOC_S_FMT"); errno_exit("VIDIOC_S_FMT");
} }
g_printerr("Driver returned %dx%d fmt %d",
fmt.fmt.pix.width, fmt.fmt.pix.height,
fmt.fmt.pix.pixelformat);
/* Note VIDIOC_S_FMT may change width and height. */ /* Note VIDIOC_S_FMT may change width and height. */
} else { } else {
g_printerr("Querying camera format");
/* Preserve original settings as set by v4l2-ctl for example */ /* Preserve original settings as set by v4l2-ctl for example */
if (xioctl(fd, VIDIOC_G_FMT, &fmt) == -1) { if (xioctl(fd, VIDIOC_G_FMT, &fmt) == -1) {
errno_exit("VIDIOC_G_FMT"); errno_exit("VIDIOC_G_FMT");
} }
g_printerr("Driver returned %dx%d fmt %d",
fmt.fmt.pix.width, fmt.fmt.pix.height,
fmt.fmt.pix.pixelformat);
} }
/* Buggy driver paranoia. */ /* Buggy driver paranoia. */