| a6f2c7b1ac67075197ccbaba61e5e23277aab5f7 |
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18-Oct-2013 |
Glenn Kasten <gkasten@google.com> |
Allow releaseBuffer after flush
After AudioTrack start checks for pending flush,
allow releaseBuffer on any previously obtained buffer.
For example, this can happen if the resampler has obtained
a buffer but not released the whole buffer yet.
Note that the resampler will be reading obsolete data.
Bug: 11285590
Change-Id: I0614fbb62e43604aac3089cce4b7797c87a306b5
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| cc21e4f1e41dfa17e7e2bef995fcd22c45f6bcd0 |
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17-Oct-2013 |
Eric Laurent <elaurent@google.com> |
AudioTrack: fix head position after restore
The head position transfered to the new track
by restoreTrack_l() must take into account the frames that
are dropped from the old track to avoid a non recoverable
offset in the playback head position returned to applications.
Bug: 11230062.
Change-Id: I51143a08b95e8f264ed709ae2054360315f2b8b1
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| ce8828a016b082f730152af2204b8ea3610dc1ec |
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17-Sep-2013 |
Glenn Kasten <gkasten@google.com> |
Fix underruns when fast track denied due to SRC
OpenSL ES requests a fast track. If sample rate conversion is needed,
the request is denied by server, and a larger client buffer is used
to handle the higher latency of a normal track. However the client
notification period was calculated based on buffer being divided into
2 sub-buffers. That resulted in the notification period being too long.
The server pulls chunks that are smaller than half the total buffer.
So now the client uses 3 sub-buffers when there is SRC.
Also removed the 'defer wake' optimization because it was incorrect.
This optimization attempted to reduce the number of wakeups of client,
when server releaseBuffer knows that another releaseBuffer will be
following. But there is no way for the first releaseBuffer to predict
how soon the second releaseBuffer will occur. In some cases it was
a long time, and the client underran. So now the client is woken up
immediately if the total number of available frames to client is >=
the minimum number the client wants to see (the notification period).
Also fix bug where minimum frame count was not being used in the
calculation of notification period.
Bug: 10342804
Change-Id: I3c246f4e7bc3684a344f2cf08268dc082e338e2a
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| 82aaf94a5b18939e4d790bbc752031f3070704a3 |
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18-Jul-2013 |
Glenn Kasten <gkasten@google.com> |
Report underruns for fast tracks also
This fixes a regression that was introduced earlier
by commit 9f80dd223d83d9bb9077fb6baee056cee4eaf7e5
called "New control block for AudioTrack and AudioRecord".
That commit broke underrun reporting for fast tracks.
Also remove Track::mUnderrunCount, which counted the number of underrun
events, and was only used by dumpsys media.audio_flinger.
Now dumpsys media.audio_flinger reports the number of underrun frames,
Isolated underrun-related control block accesses via the proxy, so that
the server is not directly poking around in the control block.
The new proxy APIs are AudioTrackServerProxy::getUnderrunFrames() and
AudioTrackServerProxy::tallyUnderrunFrames(). getUnderrunFrames() returns
a rolling counter for streaming tracks, or zero for static buffer tracks
which never underrun, but do a kind of 'pause' at end of buffer.
tallyUnderrunFrames() increments the counter by a specified number of frames.
Change-Id: Ib31fd73eb17cbb23888ce3af8ff29f471f5bd5a2
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| d054c32443a493513ab63529b0c8b1aca290278c |
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12-Jul-2013 |
Glenn Kasten <gkasten@google.com> |
Move control block mName to createTrack() output
This is part of a series of CLs to clean up the shared memory
control block, by removing any fields that don't have to be there.
Change-Id: I6e51003a1293b6800258c31b22cff2eba42162e7
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| 96f60d8f04432a1ed503b3e24d5736d28c63c9a2 |
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12-Jul-2013 |
Glenn Kasten <gkasten@google.com> |
Rename control block flags to mFlags
Change-Id: I7b6d31e24531954ab1ecdf3ed56c19433700bd89
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| f20e1d8df84c5fbeeace0052d100982ae39bb7a4 |
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12-Jul-2013 |
Glenn Kasten <gkasten@google.com> |
Rename control block server to mServer and add comments
Change-Id: Ieabd91acee92d0e84e66fbd358df5282b856306e
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| b1a270d1e926fb9a01b4265a7675ed0c2c8f4868 |
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14-May-2013 |
Richard Fitzgerald <rf@opensource.wolfsonmicro.com> |
libmedia: offloaded playback support
- start() returns a status so that upper layers can
recreate a non offloaded track in case of error.
- Added states to handle offloaded tracks specific:
- waiting for stream end (drain) notification by
audio flinger
- allow pause while waiting for stream end notification
- getPosition() queries the render position directly from
audio HAL.
- disable APIs not applicable to offloaded tracks
- Modified track restoring behavior for invalidated
offloaded tracks: just send the callback and wait for
upper layers to create a new track.
- Added wait for stream end management in audio track client
proxy. Similar to obtainBuffer and should be factored in.
Change-Id: I0fc48117946364cb255afd653195498891f622bd
Signed-off-by: Eric Laurent <elaurent@google.com>
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| bfb1b832079bbb9426f72f3863199a54aefd02da |
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07-Jan-2013 |
Eric Laurent <elaurent@google.com> |
AudioFlinger: offload playback, non-blocking write
- Added specialized playback thread class for offload playback,
derived from directoutput thread.
This thread type handles specific state transitions for offloaded
tracks and offloading commands (pause/resume/drain/flush..) to audio HAL.
As opposed to other threads, does not go to standby if the track is paused.
- Added support for asynchronous write and drain operations at audio HAL.
Use a thread to handle async callback events from HAL: this avoids locking
playback thread mutex when executing the callback and cause deadlocks when
calling audio HAL functions with the playback thread mutex locked.
- Better accouting for track activity: call start/stop and release Output
methods in audio policy manager when tracks are actually added and removed
from the active tracks list.
Added a command thread in audio policy service to handle stop/release commands
asynchronously and avoid deadlocks with playback thread.
- Track terminated status is not a state anymore. This condition is othogonal
to state to permitted state transitions while terminated.
Change-Id: Id157f4b3277620568d8eace7535d9186602564de
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| ce177bb31493d3cd4450f9d4760fa1fd32ec6bf4 |
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11-Jul-2013 |
Glenn Kasten <gkasten@google.com> |
Merge "AudioTrackShared cleanup"
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| 050501d11d944dcb256d37d3b86bd658d94f6a7f |
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11-Jul-2013 |
Glenn Kasten <gkasten@google.com> |
Fix AudioTrack::flush()
It was only flushing at a surface level, and even then only the first time
the server observed the client's flush request. Now it flushes at a
deeper level, but there may be even deeper device-specific flushing.
Bug: 9770947
Change-Id: I687cc3410ff9e5e5d4a5dcb9e3b129501e53d247
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| 7db7df0e8d9d7cee8ba374468cdbfa0108e3337c |
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26-Jun-2013 |
Glenn Kasten <gkasten@google.com> |
AudioTrackShared cleanup
Maintain unreleased frame count on client side also (was already there on server side).
Assertion failure instead of BAD_VALUE status for incorrect usage of APIs.
Clean up error handling code.
Change-Id: I23ca2f6f8a7c18645309ee5d64fbc844429bcba8
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| 93bb77da5481ab75c2cd6e3aa681839273c6e43d |
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24-Jun-2013 |
Glenn Kasten <gkasten@google.com> |
Workaround AudioRecord bug for large buffer sizes
Bug: 9556436
Change-Id: I92d1238b623d2cfd648e0a684d0e710fb0bd8b43
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| 0d09a9bec07b3bec78bd473ff0bfcf0a261f3f25 |
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24-Jun-2013 |
Glenn Kasten <gkasten@google.com> |
Use mFutex as an event flag rather than semaphore
An event flag can be more fault-tolerant in case of loss of synchronization,
as it cannot overflow. It also allows more bits to be used in the future.
See http://en.wikipedia.org/wiki/Event_flag
Change-Id: I01ca25d951eb263124da54bb4738f0d94ec4a48b
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| 9f80dd223d83d9bb9077fb6baee056cee4eaf7e5 |
|
19-Dec-2012 |
Glenn Kasten <gkasten@google.com> |
New control block for AudioTrack and AudioRecord
Main differences between old and new control block:
- removes the mutex, which was a potential source of priority inversion
- circular indices into shared buffer, which is now always a power-of-2 size
Change-Id: I4e9b7fa99858b488ac98a441fa70e31dbba1b865
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| e3aa659e9cee7df5c12a80d285cc29ab3b2cbb39 |
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04-Dec-2012 |
Glenn Kasten <gkasten@google.com> |
Start isolating control block accesses in a proxy
The proxy object will eventually be the only code that understands the
details of the control block. This should make it easier to change the
control block in the future.
Initial set of control block fields that are isolated:
- sample rate
- send level
- volume
Prepare for streaming/static separation by adding a union to the control
block for the new fields.
Fix bug in handling of max sample rate on a track. It was only checking
at re-configuration, not at each mix.
Simplify OutputTrack::obtainBuffer.
Change-Id: I2249f9d04f73a911a922ad1d7f6197292c74cd92
/frameworks/av/media/libmedia/AudioTrackShared.cpp
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| a8190fc518b6769257896605f3aee091aeb60b50 |
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04-Dec-2012 |
Glenn Kasten <gkasten@google.com> |
Split off the current control block to separate file
Prepare for a new implementation of step() etc.
Change-Id: I268421976ba577aa1fb5d7015de5441c05861190
/frameworks/av/media/libmedia/AudioTrackShared.cpp
|