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path: root/services/audioflinger/SourceAudioBufferProvider.cpp
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* AudioFlinger: fix timed audioJohn Grossman2012-08-081-1/+1
| | | | | | | | | | | | | | | | | | (cherry picked from commit e20ac92c564a2f4e8123885807abdf0a78de0dd7) > AudioFlinger: fix timed audio > > Addresses Bug 6900517. > > Finish up support for timed audio in the new FastMixer world. Pay special > attention to remaining lock-less and voluntary yield free on the FastMixer > thread. This fixes audio playback for Q on JB. > > Change-Id: Iaf815e58a1b1d0a0190051794bec8dc5c9231785 > Signed-off-by: John Grossman <johngro@google.com> Change-Id: I9bd687acc345a05867af48e71116690fdb0ce1b5 Signed-off-by: John Grossman <johngro@google.com>
* Fix race condition for non-started fast tracksGlenn Kasten2012-04-301-0/+6
| | | | | | | | | | | | | | | | | | | | | This required re-implementing how fast tracks are considered active. Now, they use the same logic as normal tracks, except underrun is ignored. Other changes: - add framesReady() to AudioBufferProvider interface - rebased - add track underrun counter state to fast mixer dump state - move dumpsys header to Track::appendDumpHeader() so it closer to where tracks are dumped - display track state in dumpsys as a character code - measure and display warmup time and cycles in dumpsys - copy in the presentation complete code - add ExtendedAudioBufferProvider for framesReady() which returns size_t - simplify underrun tracking - deferred reset track after stop() - add comments Change-Id: I7db8821bc565230ec76da1f9380fe3fb09735e5b
* Non-blocking audio I/O interface, WIPGlenn Kasten2012-04-021-0/+98
Yet another abstraction similar to AudioTrack::Buffer and AudioBufferProvider, but with support for streaming, non-blocking, and eventually PTS. This is intended to be used as follows: - primary HAL output stream implements a Sink - primary HAL input stream implements a Source - Pipe implements a Sink - PipeReader implements a Source or TimedSource (not shown yet), which supports "read at PTS" - fast AudioTrack on server side will implement a Source using cblk - normal AudioTrack on server side will not be changed initially - fast AudioRecord on server side will implement a Sink using cblk - normal AudioRecord on server side will not be changed initially - fast mixer thread will read from Sources and write to a Sink, or (unlikely) implement a Source and multiple Sinks - Visualization and PCM logger will read from Source or TimedSource - A2DP normal mixer will be connected directly to its output stream and there will be a kind of OutputTrack for duplication that will read from a Sink with non-blocking write fed by the fast mixer. Patch set 3 changes: - Add more implementations of NBAIO interfaces: added SourceAudioBufferProvider, MonoPipe, MonoPipeReader. - Added Format_sampleRate and Format_channelCount. - Extract out the roundUp() method. - Respond to most comments from previous code review. - The new classes are untested. Patch set 4 changes: - Fix bugs in MonoPipe::write() and MonoPipeReader::read() - Fix bug initializing mFrameBitShift too early - renamed roundUp() to roundup() - Fix Android.mk - Add LOG_TAG an LOG_NDEBUG, use ALOG_ASSERT and utils/Log.h instead of assert - Fix build warnings - Move constructor and destructor bodies from .h to .cpp - Line length 100 - Following naming conventions for #include double-include protector macros - Include what you use - More NBAIO logging - MonoPipe write can be blocking Patch set 5 changes: - Address code review comments - Use a static library so unused implementations don't take memory - Comment out libsndfile dependency - Remove debugging LOGV and LOG_NDEBUG Patch set 6 changes (would be 6 at old location, actually 2 at new location): - Address code review comments on patchset 5 - For MonoPipe, allow the full pipe to be used, no need to omit one slot - Don't do atomic releasing stores unless needed Still to do: - I'm not happy with the Pipe class names - Update build/ for new static library? Change-Id: Ie6c61f05ce06b676b033be448a8ef9025a2ffcfd