libstagefright: Adjustment for TunnelPlayer buffer size

- Make necessary adjustments to align the buffer size
  for TunnelPlayer to satisfy the following conditions
- Buffer size is a multiple of LCM(1,2,4,6,8)
- Buffer size is aligned to 4k.
CRs-Fixed: 447274, 442365

Change-Id: I1b7f9ac3cf8ff86f972a8b6798bfcff3a4ba7c64
audio: apply volume on DirectOutput streams

- Call stream->set_volume to apply volume on
  particular stream of DirectOutputs

Change-Id: I98e3b856ee508d407f893afad66caade5eda3e4a
CRs-Fixed: 445953
libmediaplayerservice: Add new player for DASH

- Add new player factory to support dash playback.
- DASH urls end with .mpd. When media player receives
  an url with .mpd, it will use new factory to instantiate the player
  to be used for supporting DASH playback.

Change-Id: I69e5a08fb2baf89d97b1e0711dbe52a8b1c39c29
ACodec: Support for dynamic port reconfig

- On port settings changed first flush output port
- Move ACodec to new state called FlushingOutputState
- Flush all output buffers, wait till all decoded buffers
  are rendered
- Then disable output port, and allocate output buffers
  with new resolution, and reset native window

Change-Id: Iafa266371ed2a87b909fbcb4eeae6b64208df617
libstagefright: Add support for frame-by-frame mode

- Set decoder in frame-by-frame mode always, except for interlaced
  content, for which arbitary mode should be set

Change-Id: I8195a40549898b43a0e03d65663c7148f458c448
audioflinger: Fix to set correct volume in Tunnel playback

- After a pause and resume, tunnel playback volume is always
  set to maximum irrespective of the volume value before pause.
- The cause for this is, the stream volume is not used to set
  the volume in directaudiotrack.
- Fix is to use the stream volume to set volume during tunnel
  playback.

Change-Id: I59cda146ed88bd5c4186aeb9ae5d165f4a27493f
CRs-fixed: 452285
libstagefright: Check for duration > 0 to avoid DivideByZero crash

- duration = 0 can cause divide by zero and for this clip duration
  is indiacted as 0.
- check for duration > 0 rather than duration >= 0

Change-Id: I58ccacbf7ede892dff9626715162ea7b1f2ddbc6
CRs-Fixed: 451855
Merge remote-tracking branch 'aokp/jb-mr1' into jb-mr1