Bring the Visualizer class into line with the SDK documentation by
returning ERROR_DEAD_OBJECT instead of ERROR_INVALID_OPERATION when
the Visualizer loses its binder connection to the mediaserver because
of a mediaserver restart.
Also add a new callback interface to allow clients to be
asynchronously notified in the case of server death. Right now, the
interface definition and the registration method are flagged as hidden
pending API council review/approval.
See http://b/issue?id=5717519 for details.
Change-Id: Ic15856f27ed5a950a583ac11ca81f79bd7e9b1a0
Signed-off-by: John Grossman <johngro@google.com>
Don't re-allocate buffers used by Visualizer callbacks as this causes an
unacceptable amount of GC thrash. Instead, lazily allocate the buffers and only
reallocate them when the required size changes.
See http://b/issue?id=5717519 for details.
Change-Id: Ibd157ed51f30687ce7c4ef0b4003258a484e0f5d
Signed-off-by: John Grossman <johngro@google.com>
android_media_Visualizer.cpp:
Delete local reference to jArray in captureCallback() in
the case of waveform capture.
Change-Id: Ia822ab6d9945fff93605f7732e56120c19fd42a5
There is a problem in AudioEffect and Visualizer native_setup() methods
that causes a crash in the application after the mediaserver process
has crashed and restarted.
The problem is that the native AudioEffect/Visualizer constructor is
called while the JNI is in critical state after calling
GetPrimitiveArrayCritical(). As the mediaserver process just restarted, the
first call to AudioSystem will cause the binder IAudioflinger interface to
be reteived and a callback send to AudioSystem JNI to clear the mediaserver
error state. This will call env->FindClass() and crash due to the JNI being
in critical state.
Also fixed a similar problem in AudioTrack JNI
Change-Id: I4a9026a3e26c7f78d9b4b4bec1aac90fbee2ab62
- Created sub-package android.media.audiofx for audio effects.
- Hid AudioEffect class contructor, methods and variables not needed by
applications
- Added more javadoc comments for AudioEffect Class
Change-Id: Ibbb40d4e714bb248aa32cf82d7763d74efae96d1
The visualizer enables application to retrieve part of the currently playing audio for visualization purpose.
It is not an audio recording interface and only returns partial and low quality audio content as a waveform or
a frequency representation (FFT).
Removed temporary hack made in MediaPlayer for animated wall papers based on audio visualization (snoop() method.
This commit also includes a change in AudioEffect class:
- the enable()/disable() methods have been replaced bya more standard setEnabled() method.
- some fixes in javadoc
Change-Id: Id092a1340e9e38dae68646ade7be054e3a36980e
