Signed-off-by: Frank Schäfer <fschaefer.oss@xxxxxxxxxxxxxx>
---
drivers/media/usb/em28xx/em28xx-video.c | 15 ++++++++++++---
1 Datei geändert, 12 Zeilen hinzugefügt(+), 3 Zeilen entfernt(-)
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c
index 197823c..f745617 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;
--
1.7.10.4
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