Я разработал модуль ядра (Android ), который предоставляет мне:
PCM
16-bit
48000 Hz
2 channel
и я хочу передать его в Apple Airport Express (AEX )в java.
Для AEX требуется PCM с частотой 44,1 кГц, поэтому я должен передискретизировать поток PCM -.
У меня есть следующие возможности, но какой из них лучше?
advantages:
high-performant due to native C
already uses libsamplerate to resample wav, mp3, ogg, flac, aac, pls
openssl as static library
usable via command-line from my java-program via Runtime.exec()
disadvantages:
I am relative new to C
overloaded: I don't need wav, mp3.. only PCM
many dependencies with GPL-libraries which I have to compile for Android
only supports PCM already with 44.1 kHz, no resampling for PCM implemented yet
-> have to implement resampling for PCM
advantages:
I CAN java :)
middle-performant due to resamling in C, but streaming in java
just one dependency to LGPL-library
no Runtime.exec() needed
disadvantages:
needs [bouncycastle][3] for AES which is a bit larger than openssl
less performant than solution #1 (but maybe fast enough)
advantages:
most performant
no resampling at higher level
disadvantages:
I am relative new to C
Is it possible to use libsamplerate or libresample in kernel-space?!