Also DataSources now must provide a method initCheck()
and DataSource::reat_at has been renamed to readAt to conform to
standard API naming guidelines.
While our hardware decoders clearly outperform the software decoders in terms
of raw throughput, their startup latency makes them less suitable for thumbnail
extraction.
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.
This change is a complement to the main fix in kernel driver for the same issue (partner change #1250).
It removes clicks sometimes heard after the end of the tones while audio flinger is sending 0s to the audio output stream.
The problem was that the sleep time between two writes was more than the duration of one audio output stream buffer which could cause some underrun.
Also fixed a recent regression in ToneGenerator that made that the end of previous tone was repeated at the beginning of current one under certain timing circumstances when the maximum tone duration was specified.
This currently assumes 44k stereo (won't crash on other formats, but won't give the correct results either), and links statically with libspeex to get FFT data, increasing the size of libmedia by about 45kb.
When the AudioTrack callback notification size is relatively high (Which is the case on Sholes and over A2DP), it is likely that the end of tone is reached during the first callback. In this case, the AudioTrack is stopped before exiting the callback which causes 2 problems:
- 1: If the AudioFlinger thread is scheduled before we exit the ToneGenerator callback, the track can be stopped and reset before the data is actually marked as present in the buffer by the AudioTrack callback => no audio will be processed by AudioFlinger.
- 2: In this case, the data write index in the AudioTrack buffer is incremented after the track was reset by the AudioFlinger which leaves unplayed data in the buffer. This data will be played the next time the AudioTrack is started if not flushed in between.
The fix consists in adding an intermediate state to ToneGenerator state machine so that we exit the callback function when the stop condition is reached and stop the AudioTrack the next time we execute the callback.
This api allows to instantiate a renderer by specifying the hosting java Surface object. This hides the implementation details of (java-)Surface, (native-)Surface and friends.
Add a parameter to ToneGenerator.startTone() allowing the caller to specify the tone duration. This is used by the phone application to have a precise control on the DTMF tone duration which was not possible with the use of delayed messaged.
Also modified AudioFlinger output threads so that 0s are written to the audio output stream when no more tracks are ready to mix instead of just sleeping. This avoids an issue where the end of a previous DTMF tone could stay in audio hardware buffers and be played just before the beginning of the next DTMF tone.
* changes:
When encountering a .nomedia file, notify the MediaScannerClient, so that it can erase the data column for entries that are in the folder containing the .nomedia file. This prevents us from deleting (via a delete trigger) files when somebody adds a .nomedia file after the fact.
so that it can erase the data column for entries that are in the
folder containing the .nomedia file. This prevents us from
deleting (via a delete trigger) files when somebody adds a
.nomedia file after the fact.
commit c45bfbb97ccd05982008df47181f9c73abaf0497
Author: Andreas Huber <andih@google.com>
Date: Tue Sep 1 15:58:12 2009 -0700
This quirk should not be enabled by default in order to make the bug reproducible by the vendor.
commit 21d72e80e795fcae53d9c3bcc8ba6312b081e420
Author: Andreas Huber <andih@google.com>
Date: Tue Sep 1 15:55:45 2009 -0700
Undoing the hack to temporarily give up the lock to facilitate reading from the buffer source.
This simply causes too many issues, there need to be independent threads providing input buffers and dequeuing output buffers.
commit 84d507def8999c146ce124cc8edfe106c9ca70c2
Author: Andreas Huber <andih@google.com>
Date: Tue Sep 1 15:16:23 2009 -0700
The AAC components appear to output stereo data even if the input data is mono...
commit 3fa5f3ce910f34da0cedb8bcce1bd593db7eb740
Author: Andreas Huber <andih@google.com>
Date: Thu Aug 27 14:48:54 2009 -0700
Getting rid of more code now obsolete with the departure of OMXDecoder.
commit e0d923ec0c7bb60bec8eb97739036a4c70c0feef
Author: Andreas Huber <andih@google.com>
Date: Thu Aug 27 14:33:06 2009 -0700
Remove obsoleted OMXDecoder class. OMXDecoder is dead, long live OMXCodec.
commit 5bb012f0065f7ffaaeb4f569d71f0e3a8d6b19c3
Author: Andreas Huber <andih@google.com>
Date: Fri Aug 14 10:40:08 2009 -0700
An attempt at fixing export using the qcom encoders. More quirks.
commit 0690e76bfa48118a68287ccf1bbfa82febaa620c
Author: Andreas Huber <andih@google.com>
Date: Fri Aug 14 09:08:28 2009 -0700
Callbacks are now dispatched from a separate thread in OMX.
commit c6571a039526df29b6343f9a1971dbc019088c61
Author: Andreas Huber <andih@google.com>
Date: Thu Aug 13 15:42:25 2009 -0700
Massive API changes throughout stagefright, smart pointers everywhere.
commit 900612af6a0555664d9ba195112cd859491265f4
Author: Andreas Huber <andih@google.com>
Date: Thu Aug 13 13:33:12 2009 -0700
OMXCodecs now properly shutdown.
commit 96732f05e1b0603dcd1b11f16a23512592eeb4f5
Author: Andreas Huber <andih@google.com>
Date: Thu Aug 13 12:04:04 2009 -0700
More work on JPEG decoding using the hardware OMX component.
commit 63839a073ac393e3a130434ba467969053b694ad
Author: Andreas Huber <andih@google.com>
Date: Wed Aug 12 13:13:31 2009 -0700
An attempt to drive the JPEG decoder OMX node.
commit 3ac2fe5ab2926eda81b2123610b2434c645294ff
Author: Andreas Huber <andih@google.com>
Date: Tue Aug 11 16:38:21 2009 -0700
Renamed StateMachine to OMXCodec and put it in its proper place.
commit 247da75a96bf8881956413023dd49a84d5b4f5b2
Author: Andreas Huber <andih@google.com>
Date: Tue Aug 11 16:06:19 2009 -0700
Statemachine is now a full-fledged MediaSource.
commit 045244f6771fa0b9b329495c953afda900a84b71
Author: Andreas Huber <andih@google.com>
Date: Fri Aug 7 09:16:54 2009 -0700
Properly setup the input format when exporting to AMR audio.
commit 271b984cb32c5cd9e46e3f90ae121f334e4b8da9
Author: Andreas Huber <andih@google.com>
Date: Thu Aug 6 09:59:38 2009 -0700
Added some code to test audio encoding to the OMX harness.
commit 79af4748e4af33bd66d3fbac606e332a69741cf4
Author: Andreas Huber <andih@google.com>
Date: Wed Aug 5 14:36:22 2009 -0700
Merge the old OMXDecoder and the new, shiny, StateMachine code.
commit 91cf5dd77a8762bc10a0b2ffce35e3bbeb262231
Author: Andreas Huber <andih@google.com>
Date: Tue Aug 4 17:41:43 2009 -0700
A new harness to test OMX node compliance (and quirks).
