How to print some own log messages

[spaul13]

suppose, I want to print my own log messages in few functions of x264 encoder. So that I can observe those log messages in terminal while encoding frames. How to do that?

I have used x264_log, x264_cli_log, sprintf, and printf also nothing is popping up in the terminal while encoding. (I have put the log messages in correct place which is called while the process)