diff options
| author | Frank Schaefer <fschaefer.oss@googlemail.com> | 2013-02-10 16:05:13 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-03-04 14:42:30 -0300 |
| commit | b83741383565f675bd13861fc39cfacdd68d18c1 (patch) | |
| tree | 91086b1191637ac0d8d779cbc2749daa5aba7c06 /drivers/media/usb | |
| parent | 6b09a21cbc01521dcc4855484e2c0ffe8aab2a78 (diff) | |
[media] em28xx: add function scale_to_size()
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-video.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index 197823cfd26..f745617aeec 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -815,6 +815,17 @@ static void size_to_scale(struct em28xx *dev, *vscale = EM28XX_HVSCALE_MAX; } +static void scale_to_size(struct em28xx *dev, + unsigned int hscale, unsigned int vscale, + unsigned int *width, unsigned int *height) +{ + unsigned int maxw = norm_maxw(dev); + unsigned int maxh = norm_maxh(dev); + + *width = (((unsigned long)maxw) << 12) / (hscale + 4096L); + *height = (((unsigned long)maxh) << 12) / (vscale + 4096L); +} + /* ------------------------------------------------------------------ IOCTL vidioc handling ------------------------------------------------------------------*/ @@ -890,9 +901,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, } size_to_scale(dev, width, height, &hscale, &vscale); - - width = (((unsigned long)maxw) << 12) / (hscale + 4096L); - height = (((unsigned long)maxh) << 12) / (vscale + 4096L); + scale_to_size(dev, hscale, hscale, &width, &height); f->fmt.pix.width = width; f->fmt.pix.height = height; |