How to use fluidsynth in HarmonyOS

[BoyanLiu-Bot]

Original Question:
Since HarmonyOS is currently unable to play MIDI format audio, it needs to use this third-party library to convert MIDI to PCM.
Blocking:
At present, it is recommended to write it as an audio file and then play the audio directly.
However, the scene where we play a single tone has relatively high requirements for real-time playback, which is not very applicable.
Request:

1. I want to know the demo of monosyllabic MIDI to PCM, and be able to get the converted PCM data.
2. Based on PCM data, it can be played directly on HarmonyOS. (This may require an interface to adapt to the audio interface of HarmonyOS)