This patch modifies the native binder interface to the metadata
retriever to pass the caller's thread group across the binder
interface. On the server side, the thread scheduler group is
set to the caller's scheduler group temporarily and restored
after the request has completed. This patch also reverts a
previous patch where the priority of the thread was forced to
a low priority foreground thread.
This should give apps more control over the priority of their
metadata retrieval, particularly allow background process to
run without hogging the CPU.
This is a second attempt to fix the audio routed to earpiece syndrom.
The root cause identified this time is the crash of an application having an active AudioTrack playing on the VOICE_CALL stream type.
When this happens, the AudioTrack destructor is not called and the audio policy manager is not notified of the track stop.
Results a situation where the VOICE_CALL stream is considered as always in use by audio policy manager which makes that audio is routed to earpiece.
The fix consists in moving the track start/stop/close notification to audio policiy manager from AudioTrack to AudioFlinger Track objet.
The net result is that in the case of a client application crash, the AudioFlinger TrackHandle object (which implements the remote side of the IAudioTrack binder interface) destructor is called which in turn destroys the Track object and we can notify the audio policy manager of the track stop and removal.
The same modification is made for AudioRecord although no bug related to record has been reported yet.
Also fixed a potential problem if record stop is called while the record thread is exiting.
The headset state indicated by HeadsetObserver in the broadcast intent ACTION_HEADSET_PLUG was not 0 or 1 as specified in the java doc but contained a bit field indicating the type of headset connected.
Modified HeadsetObserver to broacast a state conforming to java doc.
Added an extra to intent ACTION_HEADSET_PLUG to indicate if headset has a microphone or not.
Removed handling of non standard headset indications from HeadsetObserver.
Removed platform specific devices from output devices defined in AudioSystem.
Modified AudioService to use new ACTION_HEADSET_PLUG intent extra instead of bitfield in state.
This change goes with a kernel driver change that reduces the audio buffer size from 4800 bytes (~27ms) to 3072 bytes (~17ms).
- The AudioFlinger modifcations in change 0bca68cfff have been removed: the short sleep period was counter productive when the AudioTrack is using the call back thread as it causes to many preemptions.
- AudioFlinger mixer thread now detects long standby exit time and in this case anticipates start by writing 0s as soon as a track is enabled even if not ready for mixing.
- AudioTrack::start() is modified to start call back thread before starting the IAudioTrack so that thread startup time is masked by IAudioTrack start and mixer thread wakeup time.
* changes:
Make AudioPlayer a little less verbose, defer starting audio playback until after the first video frame has been decoded (if there's video at all).
commit 08259dd3dc9026887f9bbfedaf45866eb56ea9bc
Author: Andreas Huber <andih@google.com>
Date: Thu Nov 5 12:02:31 2009 -0800
DO NOT MERGE: Use PV for metadata extraction even if stagefright is used for playback.
commit 991832fe4dc012e51d3d9ed8d647c7f09991858f
Author: Andreas Huber <andih@google.com>
Date: Thu Nov 5 11:24:11 2009 -0800
DO NOT MERGE: Do not assert if we encounter OMX_StateInvalid. All bets are off though.
commit cec45cf302d9218fe79956cbe8a462d7ca3a10bb
Author: Andreas Huber <andih@google.com>
Date: Mon Oct 26 16:11:54 2009 -0700
DO NOT MERGE: When freeing an OMX node, attempt to transition it from its current state all the way to "Loaded" in order to properly free any allocated buffers.
commit 34a1e885ef9113d68acbc26d36fcc47fdebbed84
Author: Andreas Huber <andih@google.com>
Date: Thu Nov 5 11:10:49 2009 -0800
DO NOT MERGE: Fix heap corruptin in OMXNodeInstance.
commit 5a47f7439a1298b330541a7e4e647a8b44487388
Author: Andreas Huber <andih@google.com>
Date: Thu Nov 5 11:08:19 2009 -0800
DO NOT MERGE: Fix seek-on-initial-read behaviour of OMXCodec.
commit 45bed64722501b9f411a2940aff5aff4cc4d2e98
Author: Andreas Huber <andih@google.com>
Date: Thu Nov 5 11:02:23 2009 -0800
DO NOT MERGE: Renaming string.h to stagefright_string.h to avoid conflicts.
commit 6738e306a50196f31a73d4fc7b7c45faff639903
Author: Andreas Huber <andih@google.com>
Date: Thu Oct 15 13:46:54 2009 -0700
DO NOT MERGE: Reimplement the OMX backend for stagefright.
Besides a major cleanup and refactoring, OMX is now a singleton living in the media server, it listens for death notifications of node observers/clients that allocated OMX nodes and performs/attempts cleanup.
Changed APIs to conform to the rest of the system.
Create a new IAudioTrack interface to AudioFlinger when start() fails due to a broken pipe error.
Do the same if start fails due to the same error after time out in obtainBuffer().
Do not indicate that the AudioTrack is started to AudioPolicyManager if IAudioTrack start fails.
This avoids that an AudioTrack keeps a dead IAudioTrack after a media server crash.
Same modifications for AudioRecord.
Add a flag to ToneGenerator indicating that the callback thread can call Java. Without it, when the media server crashes and restarts, the AudioSystem error callback will crash in JNI if the IAudiotrack is created from AudioTrack callback thread.
* changes:
Fix bug 2201417. Whenever the System setting that indicates whether the notifcation stream uses the ring volume changes, the table of stream volume aliases in AudioService is updated. But the name of the alias stored in VolumeStreamState.mVolumeIndexSettingName was not updated whenever the NOTIFICATIONS_USE_RING_VOLUME setting was updated. This caused the wrong volume setting to be persisted. This change ensures the setting name is updated whenever the volume alias is, and persists the notification volume change right away (instead of after a delay), so that registered observers are notified right away. The notification seekbar in the sound settings is an example of such an observer.
whether the notifcation stream uses the ring volume changes, the
table of stream volume aliases in AudioService is updated. But the
name of the alias stored in VolumeStreamState.mVolumeIndexSettingName
was not updated whenever the NOTIFICATIONS_USE_RING_VOLUME setting
was updated. This caused the wrong volume setting to be persisted.
This change ensures the setting name is updated whenever the volume
alias is, and persists the notification volume change right away
(instead of after a delay), so that registered observers are notified
right away. The notification seekbar in the sound settings is an
example of such an observer.
This change forces metadata retreiver threads to background priority.
Uses an inner class to encapsulate the priority change so that it
automatically restores priority when returning to the client.
