audio: MMAP NOIRQ mode shareable file descriptor

Derive a shareable file descriptor for the DMA buffer
used for MMAP NOIRQ

Bug: 37167970
Test: run AAudio CTS tests with MMAP enabled
Change-Id: Ibdd633fad35ed397f6de746e5755a02522e39777
5 files changed
tree: 7e836a8ee52907c40b7a131b47bf6f5e6b1c473e
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk