Samsung devices (all of them) have many bugs related to audio API.
In our application we've handled this by applying specific solutions
to known device models - you will have to investigate and find
workarounds for that.

On Sep 26, 4:05 am, Steve Hugg <[email protected]> wrote:
> We have been getting reports of audio recording not working on Samsung
> Moment phones on 2.1-update1.
>
>  int bufferSize = AudioRecord.getMinBufferSize(sampleRate,
> AudioFormat.CHANNEL_IN_MONO,
>                                 AudioFormat.ENCODING_PCM_16BIT);
>  this.audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC,
> sampleRate,
>                                 AudioFormat.CHANNEL_IN_MONO,
> AudioFormat.ENCODING_PCM_16BIT, bufferSize);
>
> generates these logs:
>
> I/AudioPolicyManager( 1889): getInput() inputSource 1, samplingRate
> 16000, format 1, channels 10, acoustics 0
> W/AudioHardwareALSA( 1889): openInputStream : mInput already exists!!
> E/AudioRecord( 2618): Could not get audio input for record source 1
> E/AudioRecord-JNI( 2618): Error creating AudioRecord instance:
> initialization check failed.
> E/AudioRecord-Java( 2618): [ android.media.AudioRecord ] Error code
> -20 when initializing native AudioRecord object.
>
> I can't find the "mInput already exists" anywhere in the source base,
> could this perhaps be an error message included by the OEM?
>
> Thanks!

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