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[media] uvcvideo: Fix bytesperline calculation for planar YUV

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The formula used to calculate bytesperline only works for packed format.
So far, all planar format we support have their bytesperline equal to
the image width (stride of the Y plane or a line of Y for M420).

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Nicolas Dufresne 2016-01-07 18:43:48 -02:00 committed by Mauro Carvalho Chehab
parent 23ce62d293
commit f222467a2c
1 changed files with 17 additions and 2 deletions
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19
drivers/media/usb/uvc/uvc_v4l2.c
View file

@ -142,6 +142,21 @@ static __u32 uvc_try_frame_interval(struct uvc_frame *frame, __u32 interval)
return interval;
}
static __u32 uvc_v4l2_get_bytesperline(const struct uvc_format *format,
const struct uvc_frame *frame)
{
switch (format->fcc) {
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_YVU420:
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_M420:
return frame->wWidth;
default:
return format->bpp * frame->wWidth / 8;
}
}
static int uvc_v4l2_try_format(struct uvc_streaming *stream,
struct v4l2_format *fmt, struct uvc_streaming_control *probe,
struct uvc_format **uvc_format, struct uvc_frame **uvc_frame)
@ -245,7 +260,7 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
fmt->fmt.pix.width = frame->wWidth;
fmt->fmt.pix.height = frame->wHeight;
fmt->fmt.pix.field = V4L2_FIELD_NONE;
fmt->fmt.pix.bytesperline = format->bpp * frame->wWidth / 8;
fmt->fmt.pix.bytesperline = uvc_v4l2_get_bytesperline(format, frame);
fmt->fmt.pix.sizeimage = probe->dwMaxVideoFrameSize;
fmt->fmt.pix.colorspace = format->colorspace;
fmt->fmt.pix.priv = 0;
@ -282,7 +297,7 @@ static int uvc_v4l2_get_format(struct uvc_streaming *stream,
fmt->fmt.pix.width = frame->wWidth;
fmt->fmt.pix.height = frame->wHeight;
fmt->fmt.pix.field = V4L2_FIELD_NONE;
fmt->fmt.pix.bytesperline = format->bpp * frame->wWidth / 8;
fmt->fmt.pix.bytesperline = uvc_v4l2_get_bytesperline(format, frame);
fmt->fmt.pix.sizeimage = stream->ctrl.dwMaxVideoFrameSize;
fmt->fmt.pix.colorspace = format->colorspace;
fmt->fmt.pix.priv = 0;