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| author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-09-14 13:36:34 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-09-14 13:36:34 -0300 |
| commit | 27167428b37b74b3453ab7cfa9465529a38f4d09 (patch) | |
| tree | b789ef87c6136c6827f8389a01ca3df31898f843 /linux | |
| parent | f1f6feeeee28e8b24e319a3a245d55846906016d (diff) | |
| download | mediapointer-dvb-s2-27167428b37b74b3453ab7cfa9465529a38f4d09.tar.gz mediapointer-dvb-s2-27167428b37b74b3453ab7cfa9465529a38f4d09.tar.bz2 | |
Add a default method for VIDIOC_G_PARM
From: Mauro Carvalho Chehab <mchehab@infradead.org>
For most drivers, VIDIOC_G_PARM will just return the current standard fps.
So, instead of failing, drivers based on video_ioctl2 will implement the
default method.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'linux')
| -rw-r--r-- | linux/drivers/media/video/videodev.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/linux/drivers/media/video/videodev.c b/linux/drivers/media/video/videodev.c index 3297057bb..f29017482 100644 --- a/linux/drivers/media/video/videodev.c +++ b/linux/drivers/media/video/videodev.c @@ -1302,9 +1302,29 @@ static int __video_do_ioctl(struct inode *inode, struct file *file, case VIDIOC_G_PARM: { struct v4l2_streamparm *p=arg; - if (!vfd->vidioc_g_parm) - break; - ret=vfd->vidioc_g_parm(file, fh, p); + if (vfd->vidioc_g_parm) { + ret=vfd->vidioc_g_parm(file, fh, p); + } else { + struct v4l2_standard s; + + if (!vfd->tvnormsize) { + printk (KERN_WARNING "%s: no TV norms defined!\n", + vfd->name); + break; + } + + if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + v4l2_video_std_construct(&s, vfd->tvnorms[vfd->current_norm].id, + vfd->tvnorms[vfd->current_norm].name); + + memset(p,0,sizeof(*p)); + + p->parm.capture.timeperframe = s.frameperiod; + ret=0; + } + dbgarg (cmd, "type=%d\n", p->type); break; } |