aboutsummaryrefslogtreecommitdiff
path: root/src/platforms/px4_publisher.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/platforms/px4_publisher.h')
-rw-r--r--src/platforms/px4_publisher.h161
1 files changed, 161 insertions, 0 deletions
diff --git a/src/platforms/px4_publisher.h b/src/platforms/px4_publisher.h
new file mode 100644
index 000000000..d9cd7a3c1
--- /dev/null
+++ b/src/platforms/px4_publisher.h
@@ -0,0 +1,161 @@
+/****************************************************************************
+ *
+ * Copyright (c) 2014 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name PX4 nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/**
+ * @file px4_nodehandle.h
+ *
+ * PX4 Middleware Wrapper Node Handle
+ */
+#pragma once
+#if defined(__PX4_ROS)
+/* includes when building for ros */
+#include "ros/ros.h"
+#else
+/* includes when building for NuttX */
+#include <uORB/Publication.hpp>
+#include <containers/List.hpp>
+#endif
+
+#include <platforms/px4_message.h>
+
+namespace px4
+{
+
+/**
+ * Untemplated publisher base class
+ * */
+class __EXPORT PublisherBase
+{
+public:
+ PublisherBase() {};
+ ~PublisherBase() {};
+};
+
+/**
+ * Publisher base class, templated with the message type
+ * */
+template <typename T>
+class __EXPORT Publisher
+{
+public:
+ Publisher() {};
+ ~Publisher() {};
+
+ virtual int publish(const T &msg) = 0;
+};
+
+#if defined(__PX4_ROS)
+template <typename T>
+class PublisherROS :
+ public Publisher<T>
+{
+public:
+ /**
+ * Construct Publisher by providing a ros::Publisher
+ * @param ros_pub the ros publisher which will be used to perform the publications
+ */
+ PublisherROS(ros::NodeHandle *rnh) :
+ Publisher<T>(),
+ _ros_pub(rnh->advertise<typename std::remove_reference<decltype(((T*)nullptr)->data())>::type &>(T::handle(), kQueueSizeDefault))
+ {}
+
+ ~PublisherROS() {};
+
+ /** Publishes msg
+ * @param msg the message which is published to the topic
+ */
+ int publish(const T &msg)
+ {
+ _ros_pub.publish(msg.data());
+ return 0;
+ }
+protected:
+ static const uint32_t kQueueSizeDefault = 1; /**< Size of queue for ROS */
+ ros::Publisher _ros_pub; /**< Handle to the ros publisher */
+};
+#else
+/**
+ * Because we maintain a list of publishers we need a node class
+ */
+class __EXPORT PublisherNode :
+ public ListNode<PublisherNode *>
+{
+public:
+ PublisherNode() :
+ ListNode()
+ {}
+
+ virtual ~PublisherNode() {}
+
+ virtual void update() = 0;
+};
+
+template <typename T>
+class __EXPORT PublisherUORB :
+ public Publisher<T>,
+ public PublisherNode
+
+{
+public:
+ /**
+ * Construct Publisher by providing orb meta data
+ */
+ PublisherUORB() :
+ Publisher<T>(),
+ PublisherNode(),
+ _uorb_pub(new uORB::PublicationBase(T::handle()))
+ {}
+
+ ~PublisherUORB() {
+ delete _uorb_pub;
+ };
+
+ /** Publishes msg
+ * @param msg the message which is published to the topic
+ */
+ int publish(const T &msg)
+ {
+ _uorb_pub->update((void *)&(msg.data()));
+ return 0;
+ }
+
+ /**
+ * Empty callback for list traversal
+ */
+ void update() {} ;
+private:
+ uORB::PublicationBase * _uorb_pub; /**< Handle to the publisher */
+
+};
+#endif
+}