openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

[media] cx25821: add output format ioctls 

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2013-04-14 11:40:26 -03:00 committed by Mauro Carvalho Chehab
parent 0df13d99f7
commit e90878ab15
1 changed files with 46 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/media/pci/cx25821/cx25821-video.c
View File

@ -851,6 +851,48 @@ static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o
return o ? -EINVAL : 0;
}
static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
const struct cx25821_fmt *fmt;
fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
if (NULL == fmt)
return -EINVAL;
f->fmt.pix.width = 720;
f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
f->fmt.pix.priv = 0;
return 0;
}
static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx25821_channel *chan = video_drvdata(file);
int err;
err = cx25821_vidioc_try_fmt_vid_out(file, priv, f);
if (0 != err)
return err;
chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
chan->vidq.field = f->fmt.pix.field;
chan->width = f->fmt.pix.width;
chan->height = f->fmt.pix.height;
if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
chan->pixel_formats = PIXEL_FRMT_411;
else
chan->pixel_formats = PIXEL_FRMT_422;
return 0;
}
static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
.s_ctrl = cx25821_s_ctrl,
};
@ -905,6 +947,10 @@ static const struct v4l2_file_operations video_out_fops = {
static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
.vidioc_querycap = cx25821_vidioc_querycap,
.vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out,
.vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
.vidioc_g_std = cx25821_vidioc_g_std,
.vidioc_s_std = cx25821_vidioc_s_std,
.vidioc_enum_output = cx25821_vidioc_enum_output,