The OpenMAX DL (Development Layer) APIs contain a comprehensive set of audio, video, signal processing function primitives which can be implemented and optimized on various CPUs and hardware engines and then used for accelerated codec functionality.

在arm下的AAC解码程序，采用定点计算，速度很快，有很多手机的解码程序就是用的这个解码程序。经本人调试通过，需要的人可参考。--In the arm under the AAC decoding procedures, the use of fixed-point calculation, fast, has a lot of mobile phones is to use the decoding process of the decoding process. After I debug

mp3 decoder for arm microcontroller

针对ARM平台，基于FAAC，对AAC算法进行了优化，大幅提高ARM平台下的AAC编码速度，约提高3倍。