system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-25 12:49:03 +00:00
Code Issues Packages Projects Releases Wiki Activity

[media] vivi: add autogain/gain support to test the autocluster functionality

Browse source 
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 2011-06-07 06:34:41 -03:00 committed by Mauro Carvalho Chehab
parent c76cd63572
commit a1c894fba3
1 changed files with 24 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
drivers/media/video/vivi.c
View file

@ -163,6 +163,11 @@ struct vivi_dev {
struct v4l2_ctrl *contrast;
struct v4l2_ctrl *saturation;
struct v4l2_ctrl *hue;
struct {
/* autogain/gain cluster */
struct v4l2_ctrl *autogain;
struct v4l2_ctrl *gain;
};
struct v4l2_ctrl *volume;
struct v4l2_ctrl *button;
struct v4l2_ctrl *boolean;
@ -453,6 +458,7 @@ static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf)
unsigned ms;
char str[100];
int h, line = 1;
s32 gain;
if (!vbuf)
return;
@ -475,6 +481,7 @@ static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf)
dev->width, dev->height, dev->input);
gen_text(dev, vbuf, line++ * 16, 16, str);
gain = v4l2_ctrl_g_ctrl(dev->gain);
mutex_lock(&dev->ctrl_handler.lock);
snprintf(str, sizeof(str), " brightness %3d, contrast %3d, saturation %3d, hue %d ",
dev->brightness->cur.val,
@ -482,7 +489,8 @@ static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf)
dev->saturation->cur.val,
dev->hue->cur.val);
gen_text(dev, vbuf, line++ * 16, 16, str);
snprintf(str, sizeof(str), " volume %3d ", dev->volume->cur.val);
snprintf(str, sizeof(str), " autogain %d, gain %3d, volume %3d ",
dev->autogain->cur.val, gain, dev->volume->cur.val);
gen_text(dev, vbuf, line++ * 16, 16, str);
snprintf(str, sizeof(str), " int32 %d, int64 %lld ",
dev->int32->cur.val,
@ -978,6 +986,15 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
/* --- controls ---------------------------------------------- */
static int vivi_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct vivi_dev *dev = container_of(ctrl->handler, struct vivi_dev, ctrl_handler);
if (ctrl == dev->autogain)
dev->gain->val = jiffies & 0xff;
return 0;
}
static int vivi_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct vivi_dev *dev = container_of(ctrl->handler, struct vivi_dev, ctrl_handler);
@ -1040,6 +1057,7 @@ static int vivi_mmap(struct file *file, struct vm_area_struct *vma)
}
static const struct v4l2_ctrl_ops vivi_ctrl_ops = {
.g_volatile_ctrl = vivi_g_volatile_ctrl,
.s_ctrl = vivi_s_ctrl,
};
@ -1208,6 +1226,10 @@ static int __init vivi_create_instance(int inst)
V4L2_CID_SATURATION, 0, 255, 1, 127);
dev->hue = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
V4L2_CID_HUE, -128, 127, 1, 0);
dev->autogain = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
dev->gain = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
V4L2_CID_GAIN, 0, 255, 1, 100);
dev->button = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_button, NULL);
dev->int32 = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_int32, NULL);
dev->int64 = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_int64, NULL);
@ -1218,6 +1240,7 @@ static int __init vivi_create_instance(int inst)
ret = hdl->error;
goto unreg_dev;
}
v4l2_ctrl_auto_cluster(2, &dev->autogain, 0, true);
dev->v4l2_dev.ctrl_handler = hdl;
/* initialize locks */