frameworks/av: Mediacodec initialization check in QCUtils

- Mediaserver crash is observed while playing wma10pro clips
  on MM stability stress

- 8x10 device is not supporting wma10pro format from openmax
  which is resulting component creation fail.
  However in this case multiaac decoder component is creating
  which is resulting crash

- On QCUtils::helper_addMediaCodec without intialzing the codec
  we are trying to add codec capabilities which is resulting wrong
  codec capabilities to assign for multiaac decoder
  Added initializarion & flags check to fix the issue

Change-Id: I8a61d658bcbebf53a59a30bd6d812b4dafec46c6
CRs-Fixed: 552817
(cherry picked from commit af8b665c1ab2eeb1d0e964684043590522082f3d)
framework/av: Check for NULL pointer of mCblk and zero division error

latency calculation happens in two places: AudioTrack::latency() and
AudioTrack::dump(). Need to add null pointer and zero division check on
both of these places.

Change-Id: I9cbe8c1c00a390cd626bdbf202124f27e60eb3e3
Fixed-CRs: 548514
(cherry picked from commit 4dfe626b6f3e4b80e71c01fc39d9e3c9b16b0ef0)
media: Add Ops check before starting audio recording.

Confirm user permission before starting audio recording.

Change-Id: Ia4e6d8fb6986d4e73fb656ba0efaf42c210e92af
(cherry picked from commit 2d844ce6dc3b3558dabe67bd0607042eb0685bb8)
audioflinger: do not use raw pointer for tracks

Commit 9da3d95 surfaced a problem caused by the use of a raw
pointer to a track in offload thread implementation.

Pointers to tracks should always be weak or strong pointers.

Bug: 11708529.
Change-Id: Ic48632532d186c9be8261f73cefdf824b9fbbd2b
(cherry picked from commit 1b37c78b7709e6958885e3d2fdeaab45ba64d6dd)
audioflinger: SRS effects are not working for LPA

    -Issue: If SRS effects are applied on LPA playback,
     in ARM side there is a delay of 4-5 seconds for effects
     application
    -Root cause: In applyEffects SRS effects are applied first and
     then Android effects are applied.
     In case of active android effects, SRS effects are called
     first and then android effects are called, so buffer with
     SRS effects is getting overwritten with buffer with
     android effects.
     If there are no android effects applied then all
     the SRS effects are overwritten with decoded data.
     So until next write call, SRS effects are not applied and hence delay
     of 4-5 seconds
    -Fix: In applyEffects first apply android effects and then
     apply SRS effects

Change-Id: I36b2133256d168f06b13c3d4a2bad00312d571ac
CRs-Fixed: 566278
(cherry picked from commit 9fc34ac64181a9c1745c6a392bb02285f2a6a047)
audio: Supress redundant effect config events in short duration

Distortion sound persists for the whole song when re-enabling effect in
LPA playback mode till switch to next song. And pop noise is quite obvious
when enable/disable effects in LPA.

As the design of LPA, EffectsThreadEntry() loop is used to handle effect
config changes through applying effects with new config on dsp pcm buffers.
However, it can't handle too many config change events in a short time,
and effect with new configuration will be applied on part of dsp buffers.

Filter out redundant effect config events that come too closely to avoid
applying effect on dsp buffer in vain.

Change-Id: If8915b1d068724d5976e1519ec57e3c08cf89c9d
CRs-Fixed: 562806, 563418
(cherry picked from commit 8bcbb487b7de4c2aaae95d461a39b64f0ea9f590)
framework/av: Fix for frame drop in video playback

- Breaks in video playback seen in video clips having audio content
  with sampling rates less than 16kHz.
- While extrapolating real time with system time, the real time is wrongly
  caped.
- Fix this issue by limiting the extrapolated real time only when EOS
  is reached.

Change-Id: I95b6a8f7f1f1fd561c92955cf52151ae2890c9a7
CRs-Fixed: 400398
(cherry picked from commit 5668f2403e055feadb8a89b5277bb1c6ae5d85f5)
audioflinger: Add Null pointer check while enabling effects for LPA

- MediaServer is crashing when disabling effects after mediaplayer
object is released.
- EffectChain pointer is de-referenced without NULL check, hence
leading to a mediaserver crash.
- Adding a NULL pointer check before using EffectChain object.

Change-Id: If5ff469445246028046ba65e5ddf3300180318c2
CRs-Fixed: 583305
(cherry picked from commit 7be41518c3b60399cade17783497784f65268fb9)
Audio: Tunnel Exception for ER AAC ELD profile format

- some m4a clips are not working properly

- ADSP audio decoders don't support ER AAC ELD support

- Added tunnel exception for ER AAC ELD format.
  Added AACProfile metadata support for MKVExtractor

Change-Id: I2f6fe721b05377dfe0f24ea0ad1f6c4a885d576d
(cherry picked from commit 616521f189409a5d5c7cbd8e2fc822f09b45fc98)
audio: Check the return code of MediaWriter::start

- Return code of MediaWriter::start method is not checked
  in startRawAudioRecording. Due to this, sound recorder
  application is not receiving the error whenever there is
  an error in starting of the recording
- Fix is to check the error and return it back to
  the client accordingly

Change-Id: I15916211da7a2eb0f27fbf9d4151410a8bdfdd42
CRs-Fixed: 591788
(cherry picked from commit a50273c732d068fd91438c0b3348f0944517e947)
audio: Use composition instead of multiple inheritance

- AudioTrack is derived from BnDirectTrackClient along
  with RefBase to receive the notifications from
  AudioFlinger in tunnel/LPA mode. This is breaking
  binary compatibility for the clients which use native
  AudioTrack directly instead of Java based AudioTrack
  API
- Fix is to use composition here instead of inheritance

Change-Id: I9fd2c61cff5629924e3b08f63559679e0263bcfd
(cherry picked from commit c6791bd67e0740c02adfcc3b75f6a22f33ed4d9d)
AudioMixer: fix artifact on 2 short sounds

On multiple devices, when 2 short sounds are played simultaneously, there will be artifact
on the speaker due to the buffer not being cleared.

A common example of this is lockscreen sounds during music playback.

Change-Id: Ifcdbbd7e443aa78ef392f14003d498404f2e4d3a
(cherry picked from commit ffdcd8609ea39884952ec40d12043c35599800f2)