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| author | Eric Laurent <elaurent@google.com> | 2010-09-30 16:12:31 -0700 |
|---|---|---|
| committer | Eric Laurent <elaurent@google.com> | 2010-09-30 17:21:23 -0700 |
| commit | 44d9848d6656777a18019223e0d35f2fcc67719a (patch) | |
| tree | fe71003d3400dcbdfe078f8d8fad1b1fde960b2c /media | |
| parent | 922855214d0e8ae4159794d7f751f780b3243552 (diff) | |
| download | frameworks_av-44d9848d6656777a18019223e0d35f2fcc67719a.zip frameworks_av-44d9848d6656777a18019223e0d35f2fcc67719a.tar.gz frameworks_av-44d9848d6656777a18019223e0d35f2fcc67719a.tar.bz2 | |
Issue 3032913: improve AudioTrack recovery time
This issue showed that when an AudioTrack underruns during a too long period
of time and is therefore disabled by audioflinger mixer, it takes an additional
delay of up to 3 seconds to recover.
This fix adds a simple mechanism to recover immediately when the client application
is ready to write data again in the AudioTrack buffer
Also throttle warnings on record overflows
Change-Id: I8b2c71578dd134b9e60a15ee4d91b70f3799cb3d
Diffstat (limited to 'media')
| -rw-r--r-- | media/libmedia/AudioTrack.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp index 890786e..587c8ff 100644 --- a/media/libmedia/AudioTrack.cpp +++ b/media/libmedia/AudioTrack.cpp @@ -316,6 +316,7 @@ void AudioTrack::start() mNewPosition = mCblk->server + mUpdatePeriod; mCblk->bufferTimeoutMs = MAX_STARTUP_TIMEOUT_MS; mCblk->waitTimeMs = 0; + mCblk->flags &= ~CBLK_DISABLED_ON; if (t != 0) { t->run("AudioTrackThread", THREAD_PRIORITY_AUDIO_CLIENT); } else { @@ -842,6 +843,13 @@ create_new_track: cblk->lock.unlock(); } + // restart track if it was disabled by audioflinger due to previous underrun + if (cblk->flags & CBLK_DISABLED_MSK) { + cblk->flags &= ~CBLK_DISABLED_ON; + LOGW("obtainBuffer() track %p disabled, restarting", this); + mAudioTrack->start(); + } + cblk->waitTimeMs = 0; if (framesReq > framesAvail) { |