(cherry picked from commit 4ee0d159)

(cherry picked from commit 431c1107)

(cherry picked from commit c7f9f11c)

Send the *_EFFECT_CONTROL_SESSION intent when the state of current media
is updated. It allows external audio effects like equalizer or
visualizer to know the audio session id used by VLC and apply their own
effect.
See android.media.audiofx.AudioEffect.

Signed-off-by: Geoffrey Métais <geoffrey.metais@gmail.com>
(cherry picked from commit 00316e7f)

Generate an audio session id from AudioManager and pass it to libVLC as
a command line argument so that it creates AudioTrack in this session.

Signed-off-by: Geoffrey Métais <geoffrey.metais@gmail.com>
(cherry picked from commit f3316483)

(cherry picked from commit fcb45f49)

(cherry picked from commit 8ebdc390)

Signed-off-by: Geoffrey Métais <geoffrey.metais@gmail.com>

Signed-off-by: Geoffrey Métais <geoffrey.metais@gmail.com>

Signed-off-by: Geoffrey Métais <geoffrey.metais@gmail.com>

Signed-off-by: Geoffrey Métais <geoffrey.metais@gmail.com>

Signed-off-by: Geoffrey Métais <geoffrey.metais@gmail.com>

(cherry picked from commit 3e7196da)

(cherry picked from commit 20dcc21f)

(cherry picked from commit 6750db18)

Signed-off-by: Geoffrey Métais <geoffrey.metais@gmail.com>

Close #518

(cherry picked from commit c632c2f6)

(cherry picked from commit d9d4b9b2)

(cherry picked from commit 735997df)

(cherry picked from commit a1956893)

(cherry picked from commit 45812a96)

(cherry picked from commit ccc0729b)

(cherry picked from commit 162f0a0b)

(cherry picked from commit a23c50b4)

(cherry picked from commit 338810a0)

(cherry picked from commit 4ef32177)

(cherry picked from commit e3f19870)

(cherry picked from commit e6d7aa75)

(cherry picked from commit f74bd90a)

(cherry picked from commit 4aa65b72)

Works only for Android 6+

Close #464

(cherry picked from commit 5c7e37cc)

(cherry picked from commit 588c521d)

(cherry picked from commit 04b12baa)

(cherry picked from commit 632ad6e1)

(cherry picked from commit 16ea561c)