add launch examples for image and mono and stereo

* launch default file
ros2 launch image_publisher image_publisher_file.launch.py

* launch monocular camera (/dev/video0)
ros2 launch image_publisher image_publisher_mono.launch.py

* launch stereo camera (/dev/video0 and /dev/video1)
ros2 launch image_publisher image_publisher_stereo.launch.py

image_publisher/CMakeLists.txt

@@ -62,6 +62,9 @@ install(TARGETS image_publisher
 install(TARGETS image_publisher
         DESTINATION bin
 )
+install(DIRECTORY examples/launch
+  DESTINATION share/${PROJECT_NAME}/
+)
 
 if(BUILD_TESTING)
   find_package(ament_lint_auto REQUIRED)

image_publisher/examples/launch/image_publisher_file.launch.py

@@ -0,0 +1,46 @@
+# Copyright (c) 2008, Willow Garage, Inc.
+# All rights reserved.
+#
+# Software License Agreement (BSD License 2.0)
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#  * Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#  * 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.
+#  * Neither the name of the Willow Garage 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.
+
+from launch import LaunchDescription
+import launch_ros.actions
+
+
+def generate_launch_description():
+    filename = '/opt/ros/crystal/share/rviz_common/images/splash.png'
+    return LaunchDescription([
+
+        launch_ros.actions.Node(
+            package='image_publisher', node_executable='image_publisher', output='screen',
+            arguments=[filename],
+            remappings=[('image_raw', '/camera/image_raw'),
+                        ('camera_info', '/camera/camera_info')]),
+    ])

image_publisher/examples/launch/image_publisher_mono.launch.py

@@ -0,0 +1,46 @@
+# Copyright (c) 2008, Willow Garage, Inc.
+# All rights reserved.
+#
+# Software License Agreement (BSD License 2.0)
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#  * Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#  * 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.
+#  * Neither the name of the Willow Garage 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.
+
+from launch import LaunchDescription
+import launch_ros.actions
+
+
+def generate_launch_description():
+    device_0 = '0'
+    return LaunchDescription([
+
+        launch_ros.actions.Node(
+            package='image_publisher', node_executable='image_publisher', output='screen',
+            arguments=[device_0],
+            remappings=[('image_raw', '/camera/image_raw'),
+                        ('camera_info', '/camera/camera_info')]),
+    ])

image_publisher/examples/launch/image_publisher_stereo.launch.py

@@ -0,0 +1,57 @@
+# Copyright (c) 2008, Willow Garage, Inc.
+# All rights reserved.
+#
+# Software License Agreement (BSD License 2.0)
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#  * Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#  * 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.
+#  * Neither the name of the Willow Garage 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.
+
+from launch import LaunchDescription
+import launch_ros.actions
+
+
+def generate_launch_description():
+    device_0 = '0'
+    device_1 = '1'
+    return LaunchDescription([
+
+        # image_publisher stereo left
+        launch_ros.actions.Node(
+            package='image_publisher', node_executable='image_publisher', output='screen',
+            arguments=[device_0],
+            node_name='image_publisher_left',
+            remappings=[('image_raw', '/left/image_raw'),
+                        ('camera_info', '/left/camera_info')]),
+
+        # image_publisher stereo right
+        launch_ros.actions.Node(
+            package='image_publisher', node_executable='image_publisher', output='screen',
+            arguments=[device_1],
+            node_name='image_publisher_right',
+            remappings=[('image_raw', '/right/image_raw'),
+                        ('camera_info', '/right/camera_info')]),
+    ])