C++ (Cpp) ctrl_qmap示例

示例#1

文件： v4l2-ctl-common.cpp 项目： cemot/galileo-hack

void common_process_controls(int fd)
{
	find_controls(fd);
	for (ctrl_get_list::iterator iter = get_ctrls.begin(); iter != get_ctrls.end(); ++iter) {
	    if (ctrl_str2q.find(*iter) == ctrl_str2q.end()) {
		fprintf(stderr, "unknown control '%s'\n", iter->c_str());
		exit(1);
	    }
	}
	for (ctrl_set_map::iterator iter = set_ctrls.begin(); iter != set_ctrls.end(); ++iter) {
	    if (ctrl_str2q.find(iter->first) == ctrl_str2q.end()) {
		fprintf(stderr, "unknown control '%s'\n", iter->first.c_str());
		exit(1);
	    }
	}
}

示例#2

文件： v4l2-ctl-common.cpp 项目： forceablaze/v4l-utils

void common_process_controls(int fd)
{
	struct v4l2_query_ext_ctrl qc = {
		V4L2_CTRL_FLAG_NEXT_CTRL | V4L2_CTRL_FLAG_NEXT_COMPOUND
	};
	int rc;

	rc = test_ioctl(fd, VIDIOC_QUERY_EXT_CTRL, &qc);
	have_query_ext_ctrl = rc == 0;

	find_controls(fd);
	for (ctrl_get_list::iterator iter = get_ctrls.begin(); iter != get_ctrls.end(); ++iter) {
	    if (ctrl_str2q.find(*iter) == ctrl_str2q.end()) {
		fprintf(stderr, "unknown control '%s'\n", iter->c_str());
		exit(1);
	    }
	}
	for (ctrl_set_map::iterator iter = set_ctrls.begin(); iter != set_ctrls.end(); ++iter) {
	    if (ctrl_str2q.find(iter->first) == ctrl_str2q.end()) {
		fprintf(stderr, "unknown control '%s'\n", iter->first.c_str());
		exit(1);
	    }
	}
}

示例#3

文件： v4l2-ctl-common.cpp 项目： forceablaze/v4l-utils

int common_find_ctrl_id(const char *name)
{
	if (ctrl_str2q.find(name) == ctrl_str2q.end())
		return 0;
	return ctrl_str2q[name].id;
}