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04-Aug-2011 |
Glenn Kasten <gkasten@google.com> |
Bug 4603165 playback rate change
Non-trivial implementation is only for AudioTrack with rate range 500
to 2000 per mille and property SL_RATEPROP_NOPITCHCORAUDIO; for Android
MediaPlayer the rate range is 1000 to 1000 per mille.
Details:
- no multi-range
- fix SMP races in GetRate, SetPropertyConstraints, GetProperties
- SetRate only updates mRate if successful
- Rate_SetPropertyConstraints only updates mProperties if successful
- return SL_RESULT_FEATURE_UNSUPPORTED for non-AudioPlayers
which have this interface (currently only MidiPlayer)
- for Android, atomically set playback rate and constraints
and simplify to use hard-coded constraints rather than querying
- per the spec, SetPropertyConstraints now returns
SL_RESULT_PARAMETER_INVALID if the constraints are out of range,
or SL_RESULT_FEATURE_UNSUPPORTED if the constraints are in range but
not supported by this implementation
Change-Id: I051ff92b20f3845ffa12bccec778937d42823e5d
/frameworks/wilhelm/src/itf/IPlaybackRate.c
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