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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-08-06 21:53:59 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-08-06 21:53:59 -0300 |
| commit | 4eec1f6fb9e9c0c57fac129490eadead77179246 (patch) | |
| tree | ffe1bddc770ca469ed1336ebd4ac137f8928a463 /linux/drivers/media/video/em28xx/em28xx-video.c | |
| parent | 65a908e5b37515512c5cf89fa74a533c77e5ec62 (diff) | |
| download | mediapointer-dvb-s2-4eec1f6fb9e9c0c57fac129490eadead77179246.tar.gz mediapointer-dvb-s2-4eec1f6fb9e9c0c57fac129490eadead77179246.tar.bz2 | |
em28xx: Allow changing fps on webcams
From: Mauro Carvalho Chehab <mchehab@redhat.com>
em28xx doesn't have temporal scaling. However, on webcams, sensors are
capable of changing the output rate. So, VIDIOC_[G|S]_PARM ioctls should
be passed to the sensor for it to properly set frame rate.
Priority: normal
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'linux/drivers/media/video/em28xx/em28xx-video.c')
| -rw-r--r-- | linux/drivers/media/video/em28xx/em28xx-video.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/linux/drivers/media/video/em28xx/em28xx-video.c b/linux/drivers/media/video/em28xx/em28xx-video.c index 258cd38ce..f2d9564e9 100644 --- a/linux/drivers/media/video/em28xx/em28xx-video.c +++ b/linux/drivers/media/video/em28xx/em28xx-video.c @@ -899,6 +899,41 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm) return 0; } +static int vidioc_g_parm(struct file *file, void *priv, + struct v4l2_streamparm *p) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc = 0; + + if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + if (dev->board.is_webcam) + rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0, + video, g_parm, p); + else + v4l2_video_std_frame_period(dev->norm, + &p->parm.capture.timeperframe); + + return rc; +} + +static int vidioc_s_parm(struct file *file, void *priv, + struct v4l2_streamparm *p) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + if (!dev->board.is_webcam) + return -EINVAL; + + if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p); +} + static const char *iname[] = { [EM28XX_VMUX_COMPOSITE1] = "Composite1", [EM28XX_VMUX_COMPOSITE2] = "Composite2", @@ -2011,6 +2046,8 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_qbuf = vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, .vidioc_s_std = vidioc_s_std, + .vidioc_g_parm = vidioc_g_parm, + .vidioc_s_parm = vidioc_s_parm, .vidioc_enum_input = vidioc_enum_input, .vidioc_g_input = vidioc_g_input, .vidioc_s_input = vidioc_s_input, |