This demo app demonstrates calling C++ functions from Kotlin and then calling Kotlin functions from C++.
Sound files are played using Oboe library version 1.3.0. The Kotlin functions onMusicStarted is called from C++ code when the first audio frame is rendered, and onMusicEnded is called when the last audio frame is rendered of the sound file. See Player.cpp
- https://yalantis.com/blog/android-ndk-the-interaction-between-kotlin-and-c-c-plus-plus/
- https://sudonull.com/post/12419-Implementing-the-Observer-Subscriber-pattern-using-JNI-callbacks-on-Android-NDK
- https://github.com/googlearchive/android-audio-high-performance/blob/master/debug-utils/logging_macros.h
- https://github.com/google/oboe/tree/master/samples/RhythmGame
- https://medium.com/@donturner/using-ffmpeg-for-faster-audio-decoding-967894e94e71