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V4L/DVB (9578): v4l core: add support for enumerating frame sizes and intervals 

video_ioctl2 lacks implementation of those two ioctls:
	- VIDIOC_ENUM_FRAMESIZES and VIDIOC_ENUM_FRAMEINTERVALS

Adds implementation for those.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2008-11-11 21:13:47 -03:00
parent f3f741e711
commit 74d83fa024
2 changed files with 73 additions and 0 deletions
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67
drivers/media/video/v4l2-ioctl.c
View File

@ -1747,6 +1747,73 @@ static int __video_do_ioctl(struct file *file,
ret = ops->vidioc_s_hw_freq_seek(file, fh, p);
break;
}
case VIDIOC_ENUM_FRAMESIZES:
{
struct v4l2_frmsizeenum *p = arg;
if (!ops->vidioc_enum_framesizes)
break;
memset(p, 0, sizeof(*p));
ret = ops->vidioc_enum_framesizes(file, fh, p);
dbgarg(cmd,
"index=%d, pixelformat=%d, type=%d ",
p->index, p->pixel_format, p->type);
switch (p->type) {
case V4L2_FRMSIZE_TYPE_DISCRETE:
dbgarg2("width = %d, height=%d\n",
p->discrete.width, p->discrete.height);
break;
case V4L2_FRMSIZE_TYPE_STEPWISE:
dbgarg2("min %dx%d, max %dx%d, step %dx%d\n",
p->stepwise.min_width, p->stepwise.min_height,
p->stepwise.step_width, p->stepwise.step_height,
p->stepwise.max_width, p->stepwise.max_height);
break;
case V4L2_FRMSIZE_TYPE_CONTINUOUS:
dbgarg2("continuous\n");
break;
default:
dbgarg2("- Unknown type!\n");
}
break;
}
case VIDIOC_ENUM_FRAMEINTERVALS:
{
struct v4l2_frmivalenum *p = arg;
if (!ops->vidioc_enum_frameintervals)
break;
memset(p, 0, sizeof(*p));
ret = ops->vidioc_enum_frameintervals(file, fh, p);
dbgarg(cmd,
"index=%d, pixelformat=%d, width=%d, height=%d, type=%d ",
p->index, p->pixel_format,
p->width, p->height, p->type);
switch (p->type) {
case V4L2_FRMIVAL_TYPE_DISCRETE:
dbgarg2("fps=%d/%d\n",
p->discrete.numerator,
p->discrete.denominator);
break;
case V4L2_FRMIVAL_TYPE_STEPWISE:
dbgarg2("min=%d, max=%d, step=%d\n",
p->stepwise.min, p->stepwise.max,
p->stepwise.step);
break;
case V4L2_FRMIVAL_TYPE_CONTINUOUS:
dbgarg2("continuous\n");
break;
default:
dbgarg2("- Unknown type!\n");
}
break;
}
default:
{
if (!ops->vidioc_default)

6
include/media/v4l2-ioctl.h
View File

@ -232,6 +232,12 @@ struct v4l2_ioctl_ops {
int (*vidioc_g_chip_ident) (struct file *file, void *fh,
struct v4l2_chip_ident *chip);
int (*vidioc_enum_framesizes) (struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize);
int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
struct v4l2_frmivalenum *fival);
/* For other private ioctls */
int (*vidioc_default) (struct file *file, void *fh,
int cmd, void *arg);