fix warnings due to libav and image transport deprecation

ros-misc-utilities / ffmpeg_image_transport

ROS2 image transport plugin for encoding/decoding with h264 codec

Apache License 2.0

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fix warnings due to libav and image transport deprecation #6

Closed berndpfrommer closed 1 year ago

berndpfrommer commented 1 year ago

Libav no longer likes av_init_packet() which leads to deprecation warnings during compilation under Ubuntu 22.04 (Jammy) Also, under ROS2 Humble the decoder plugin issues warnings about an unimplemented 5-argument function(). This PR addresses these issues.