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Synchronous audio focus behavior with external focus policy

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This patch preserves the synchronous nature of audio focus requests,
  even when an external focus policy is installed.
When focus is requested, the request is blocked on
  the client-side, while AudioService informs the external
  policy of the request, and until the ext policy responds
  with the focus request result for this client, or
  it times out.
The new AudioPolicy API is the call for the external policy
  to send the focus request result.

Bug: 63906162
Test: gts-tradefed run gts -m GtsGmscoreHostTestCases -t 'com.google.android.gts.audio.AudioHostTest#testFocusPolicy'

Change-Id: I4671517f7f00eaaed8748bd4013b7d20be3085fb
This commit is contained in:
Jean-Michel Trivi
2018-01-30 15:09:47 -08:00
parent 5ecc69effa
commit e2d8aae2cc
9 changed files with 284 additions and 38 deletions
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1
api/system-current.txt
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@@ -2513,6 +2513,7 @@ package android.media {
method public int requestAudioFocus(android.media.AudioManager.OnAudioFocusChangeListener, android.media.AudioAttributes, int, int) throws java.lang.IllegalArgumentException;
method public deprecated int requestAudioFocus(android.media.AudioManager.OnAudioFocusChangeListener, android.media.AudioAttributes, int, int, android.media.audiopolicy.AudioPolicy) throws java.lang.IllegalArgumentException;
method public int requestAudioFocus(android.media.AudioFocusRequest, android.media.audiopolicy.AudioPolicy);
method public void setFocusRequestResult(android.media.AudioFocusInfo, int, android.media.audiopolicy.AudioPolicy);
method public void unregisterAudioPolicyAsync(android.media.audiopolicy.AudioPolicy);
field public static final int AUDIOFOCUS_FLAG_DELAY_OK = 1; // 0x1
field public static final int AUDIOFOCUS_FLAG_LOCK = 4; // 0x4