Avoid allocation/copy by using GetFloatArrayRegion.
Avoid allocation/copy by using GetFloatArrayRegion.

Bug: None
Change-Id: Ia049591f1d8d819d651ec8f359f318a7b9c12e43
Reviewed-on: https://webrtc-review.googlesource.com/74001
Reviewed-by: Sami Kalliomäki <b9debeb8943b89663e00c95863751401cba91c9a@webrtc.org>
Commit-Queue: Mirko Bonadei <d2c43c210eae6feef04f53bae50885e8152edcca@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#23088}
ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc