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/*
* mfc codec encoding example application
* Andrzej Hajda <a.hajda@samsung.com>
*
* Input camera device.
*
* Copyright 2012 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include "common.h"
#include "in_demo.h"
#include "v4l_dev.h"
#define SQUARE_SIZE 5
static struct io_dev_ops in_camera_ops = { .req_bufs = v4l_req_bufs,
.enq_buf = v4l_enq_buf,
.deq_buf = v4l_deq_buf,
.destroy = v4l_destroy
};
int in_camera_set_autofocus(struct io_dev *dev, int val)
{
struct v4l2_ext_control ctrl;
struct v4l2_ext_controls ctrls;
int ret;
ctrl.id = V4L2_CID_FOCUS_AUTO;
ctrl.value = val;
ctrls.ctrl_class = V4L2_CID_CAMERA_CLASS;
ctrls.count = 1;
ctrls.controls = &ctrl;
ret = ioctl(dev->fd, VIDIOC_S_EXT_CTRLS, &ctrls);
if (ret < 0)
err("Cannot set autofocus on %d", dev->fd);
return ret;
}
struct io_dev *in_camera_create(char const *name)
{
struct io_dev *dev;
dev = malloc(sizeof(*dev));
memzero(*dev);
dev->fd = open(name, O_RDWR, 0);
if (dev->fd < 0) {
free(dev);
err("Cannot open camera(%s) device", name);
return NULL;
}
dev->io[0].type = IO_NONE;
dev->io[1].type = IO_USERPTR;
dev->ops = &in_camera_ops;
in_camera_set_autofocus(dev, 1);
return dev;
}
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