libstagefright: Add HEVC as a recognized MIME in ExtendedExtractor

For HEVC playback through ACodec, ExtendedExtractor needs to recognize
the HEVC mime type and set the appropriate role to the component.

Change-Id: I60e05f4f1e480e137401112431c5c8093e637d56
audioflinger: Fix for a deadlock

AudioFlinger enters a deadlock (with itself) on trying to free a
RecordTrack object that failed initialization. Clear this
bad object from the caller instead.

CRs-Fixed: 589020
Change-Id: I926f2beb922a70f6924e593e2bbf1a5b5df85b16
DTS Postpro integration (for frameworks/av)

Adds DTS Postpro support in <root>/frameworks/av

Change-Id: I46edfb41571574ffa52c3a3f301cc003f914b00a
libmedia: Add support for LCH tones

- Add the INCALL_MUSIC flag for tracks
  created for INCALL_MUSIC stream.
- Adding tones to the ToneGenerator that are
  to be used for Local Call Hold.

Change-Id: If4092630ec67b11fd2844d0218639a2c5ae6b687
stagefright: provide a custom key to prefer adaptive playback

Provide a custom key "prefer-adaptive-playback" that can be
set in MediaFormat by java apps or by Native players to
prefer adaptive-playback over dynamic buffering

Change-Id: Ic02fc9f1d68fd9803ec154498a86e2537efcce85
av: Additional ifdefs for QCOM DirectTrack

 * Tunnel and LPA mode on legacy QC devices requires the DirectTrack
   code path, which going forward has been deprecated.
 * In order to properly support QC features on 8974, this needs broken
   out in order to not cause problems on new devices.
 * With this patch, QCOM_HARDWARE will enable features common to all
   QC platforms (including legacy), and legacy support will
   automatically be enabled based on the use of driver variant and
   value of BOARD_USES_LEGACY_ALSA_AUDIO.

Change-Id: I1da503309963734fd6603472fb87dd9c95c7b7b5