make compilable on android

[mgood7123]

untested if the supplied libs compile into the library, and untested on android itself

the external cmake file used may affect the linking process due to the libraries being included twice, im not sure

cmake_minimum_required(VERSION 3.4.1)

add_subdirectory (SDK/oboe)
add_subdirectory (AndroidBitmap)
add_subdirectory (resampler/libsndfile)
add_subdirectory (resampler/fftw-3.3.8)
add_subdirectory (resampler/ReSampler)

include_directories (SDK/oboe)
include_directories (native)
include_directories (libMonitor)

add_library (
        PlayerOboe SHARED
        libMonitor/MonitorPool.cpp
        native/AudioTime.cpp
        Oboe/Generator.cpp
        Oboe/AudioEngine.cpp
        Oboe/audio/SoundRecording.cpp
        Oboe/audio/Mixer.cpp
        Oboe/Player.cpp
        waveform/timestats.cpp
        waveform/waveform.cpp
        waveform/TimeStretch.cpp
        waveform/AudioTools.cpp
)

target_link_libraries (
        PlayerOboe
        sndfile
        fftw3
        ReSampler
        AndroidBitmap
        log
        android
        oboe
        jnigraphics
        m
)