system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-24 21:38:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

[media] solo6x10: Approximate frame intervals with non-standard denominator

Browse source 
Instead of falling back to 1/25 (PAL) or 1/30 (NTSC).

Signed-off-by: Ismael Luceno <ismael.luceno@corp.bluecherry.net>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Ismael Luceno 2013-05-03 15:54:57 -03:00 committed by Mauro Carvalho Chehab
parent 63eb2ca171
commit 88107675fb
1 changed files with 15 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

38
drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c
View file

@ -996,12 +996,11 @@ static int solo_g_parm(struct file *file, void *priv,
struct v4l2_streamparm *sp)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct solo_dev *solo_dev = solo_enc->solo_dev;
struct v4l2_captureparm *cp = &sp->parm.capture;
cp->capability = V4L2_CAP_TIMEPERFRAME;
cp->timeperframe.numerator = solo_enc->interval;
cp->timeperframe.denominator = solo_dev->fps;
cp->timeperframe.denominator = solo_enc->solo_dev->fps;
cp->capturemode = 0;
/* XXX: Shouldn't we be able to get/set this from videobuf? */
cp->readbuffers = 2;
@ -1009,36 +1008,29 @@ static int solo_g_parm(struct file *file, void *priv,
return 0;
}
static inline int calc_interval(u8 fps, u32 n, u32 d)
{
if (!n || !d)
return 1;
if (d == fps)
return n;
n *= fps;
return min(15U, n / d + (n % d >= (fps >> 1)));
}
static int solo_s_parm(struct file *file, void *priv,
struct v4l2_streamparm *sp)
{
struct solo_enc_dev *solo_enc = video_drvdata(file);
struct solo_dev *solo_dev = solo_enc->solo_dev;
struct v4l2_captureparm *cp = &sp->parm.capture;
struct v4l2_fract *t = &sp->parm.capture.timeperframe;
u8 fps = solo_enc->solo_dev->fps;
if (vb2_is_streaming(&solo_enc->vidq))
return -EBUSY;
if ((cp->timeperframe.numerator == 0) ||
(cp->timeperframe.denominator == 0)) {
/* reset framerate */
cp->timeperframe.numerator = 1;
cp->timeperframe.denominator = solo_dev->fps;
}
if (cp->timeperframe.denominator != solo_dev->fps)
cp->timeperframe.denominator = solo_dev->fps;
if (cp->timeperframe.numerator > 15)
cp->timeperframe.numerator = 15;
solo_enc->interval = cp->timeperframe.numerator;
cp->capability = V4L2_CAP_TIMEPERFRAME;
cp->readbuffers = 2;
solo_enc->interval = calc_interval(fps, t->numerator, t->denominator);
solo_update_mode(solo_enc);
return 0;
return solo_g_parm(file, priv, sp);
}
static long solo_enc_default(struct file *file, void *fh,