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POAndroid: Microphone AudioSource causing unsupported parameter, VerifyAndSetParameter failed errors
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copied!<p>This question has also been asked at <a href="https://stackoverflow.com/questions/3002537/problems-with-mediarecorder-class-setting-audio-source-setaudiosource-unsup">Problems with MediaRecorder class setting audio source - setAudioSource() - unsupported parameter</a>, however this author accepted the answer stating that this only occurs on the emulator, while (for me) this is not the case.</p> <p>The problem occurs on my device, a Galaxy S i9000. The device has a microphone and recording with the microphone works regardless of this error.</p> <p>The following code reproduces this error (called inside a service):</p> <pre><code>int sampleRate = AudioTrack.getNativeOutputSampleRate(AudioManager.STREAM_SYSTEM); int channelMode = AudioFormat.CHANNEL_IN_MONO; int encodingMode = AudioFormat.ENCODING_PCM_16BIT; //only 16bit encoding is supported int bufferSize = AudioRecord.getMinBufferSize(sampleRate, channelMode, encodingMode); recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, channelMode, encodingMode, bufferSize); </code></pre> <p>Setting the sample rate to a lower value like 8000 does not solve the problem. Setting the channelMode to stereo does not solve the problem.</p> <p>When executing this code inside my service while the microphone is available for usage, the following errors will be returned:</p> <pre><code>01-28 14:50:14.860: ERROR/audio_input(2358): unsupported parameter: x-pvmf/media-input-node/cap-config-interface;valtype=key_specific_value 01-28 14:50:14.860: ERROR/audio_input(2358): VerifyAndSetParameter failed 01-28 14:50:15.246: ERROR/PVOMXEncNode(2358): PVMFOMXEncNode-Audio_AMRNB::DoPrepare(): Got Component OMX.SEC.amrenc handle 01-28 14:50:15.258: ERROR/audio_input(2358): unsupported parameter: x-pvmf/media-input-node/cap-config-interface;valtype=key_specific_value 01-28 14:50:15.258: ERROR/audio_input(2358): VerifyAndSetParameter failed 01-28 14:50:15.328: ERROR/audio_input(2358): unsupported parameter: x-pvmf/media-input-node/cap-config-interface;valtype=key_specific_value 01-28 14:50:15.328: ERROR/audio_input(2358): VerifyAndSetParameter failed 01-28 14:50:15.356: ERROR/PVOMXEncNode(2358): PVMFOMXEncNode-Audio_AMRNB::DoPrepare(): Got Component OMX.SEC.amrenc handle 01-28 14:50:15.359: ERROR/audio_input(2358): unsupported parameter: x-pvmf/media-input-node/cap-config-interface;valtype=key_specific_value 01-28 14:50:15.359: ERROR/audio_input(2358): VerifyAndSetParameter failed 01-28 14:50:15.367: ERROR/AudioHardwareALSA(2358): AudioStreamInALSA - input - format = 1, channels = 16, rate = 44100 01-28 14:50:15.367: ERROR/AudioHardwareALSA(2358): AudioStreamInALSA - default - format = 1, channels = 16, rate = 44100 01-28 14:50:15.457: ERROR/AudioFlinger(2358): readInputParameters mInputBytes 8320, mFrameSize 2 mSampleRate 44100 mChannelCount(1) 01-28 14:50:15.457: ERROR/(2358): AFCCreateReSampler: avAFCInfo->bUsed[0] inSampleRate[44100] outSampleRate[44100] nChannel[1] outbitDepth[16] </code></pre> <p>Does anyone have a solution to this problem?</p>

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