title: Where to find the C/C++ source code invoked by media_jni (libmedia_jni.so) library used by MediaPlayer?
body: <p>I want to understand, how JNI is used to access C/C++ library APIs for MediaPlayer. All I found is <a href="https://android.googlesource.com/platform/frameworks/base/+/master/media/jni/android_media_MediaPlayer.cpp" rel="nofollow noreferrer">JNI implementation</a>. 
  I want to access the C/C++ code which is invoked by MedaiPlayer.cpp JNI to see how video or audio hardware devices getting accessed.</p>