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V4L/DVB (4375): Eliminate hardcoded limits in VIDIOC_[S|TRY]_FMT for pvrusb2 

The pvrusb2 implementation for VIDIOC_[S|TRY]_FMT was hardcoding
limits on the range for allowed resolution, but it would be much
better if we instead just queried the internal control for these
values.  This then opens the door for the driver to adjust these
limits based on the detected hardware.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mike Isely 2006-08-08 09:10:07 -03:00 committed by Mauro Carvalho Chehab
parent 434449f4c8
commit e95a191566
1 changed files with 18 additions and 16 deletions
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34
drivers/media/video/pvrusb2/pvrusb2-v4l2.c
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@ -459,18 +459,26 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
ret = 0;
switch(vf->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
int lmin,lmax;
struct pvr2_ctrl *hcp,*vcp;
int h = vf->fmt.pix.height;
int w = vf->fmt.pix.width;
hcp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_HRES);
vcp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_VRES);
if (h < 200) {
h = 200;
} else if (h > 625) {
h = 625;
lmin = pvr2_ctrl_get_min(hcp);
lmax = pvr2_ctrl_get_max(hcp);
if (h < lmin) {
h = lmin;
} else if (h > lmax) {
h = lmax;
}
if (w < 320) {
w = 320;
} else if (w > 720) {
w = 720;
lmin = pvr2_ctrl_get_min(vcp);
lmax = pvr2_ctrl_get_max(vcp);
if (w < lmin) {
w = lmin;
} else if (w > lmax) {
w = lmax;
}
memcpy(vf, &pvr_format[PVR_FORMAT_PIX],
@ -479,14 +487,8 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
vf->fmt.pix.height = h;
if (cmd == VIDIOC_S_FMT) {
pvr2_ctrl_set_value(
pvr2_hdw_get_ctrl_by_id(hdw,
PVR2_CID_HRES),
vf->fmt.pix.width);
pvr2_ctrl_set_value(
pvr2_hdw_get_ctrl_by_id(hdw,
PVR2_CID_VRES),
vf->fmt.pix.height);
pvr2_ctrl_set_value(hcp,vf->fmt.pix.width);
pvr2_ctrl_set_value(vcp,vf->fmt.pix.height);
}
} break;
case V4L2_BUF_TYPE_VBI_CAPTURE: