在linux上通过ffmpeg+faac库把pcm格式音频转换成aac格式音频-On linux through ffmpeg+faac library to convert pcm format audio aac format audio

FFmpeg Delphi/Pascal Headers and Examples Ported from FFmpeg 3.0.2 Tested on Delphi 6 to Delphi 10.1 Berlin and FPC 2.6.4 (Win32 only) Works for Linux on Delphi 10.2 Tokyo