Le ven. 22 juin 2018 16:41, Jordan Longstaff <
[hidden email]> a écrit :
Hi,
As I understand, the pngdec and pngenc plugins are built on libpng, which is a PNG encoding/decoding library that can support ARM NEON processors and has features for things like multithreading. How can I use the most of libpng’s features to optimize performance? Are there options that I can set to specify what libpng can do to run as fast as possible?
Just as for every optimization work, first step is to establish a bench mark, could be as simple as a gst-launch command. Then, you can use various tools, like perf, the Linux kernel profiler to identify the biggest CPU consumer. Finally, looking at libpng API and the plugin implementation in GStreamer, try to identify changes you could make, and test them, to see if you get better performance, or if another bottleneck need to be addressed.
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