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authorHans Verkuil <hans.verkuil@cisco.com>2011-06-07 13:34:41 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-07-28 00:53:19 +0400
commita1c894fba3c306a738576710ca35e70a32b74a6d (patch)
treeb6338fd005e7d38a2f347f481f7e2d5c04a6f505 /drivers/media/video/vivi.c
parentc76cd635726beb3e1c73bbc4dc87e0cda48ac006 (diff)
downloadlinux-a1c894fba3c306a738576710ca35e70a32b74a6d.tar.xz
[media] vivi: add autogain/gain support to test the autocluster functionality
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/vivi.c')
-rw-r--r--drivers/media/video/vivi.c25
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index 3b9db8cbe41c..2f0a1b40dd29 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -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 */