Java-Android：麦克风AudioSource导致参数不受支持,VerifyAndSetParameter失败,错误

在Problems with MediaRecorder class setting audio source – setAudioSource() – unsupported parameter处也曾问过这个问题,但是作者接受了答案,指出这仅在模拟器上发生,而(对我而言)情况并非如此.

我的设备Galaxy S i9000上出现了问题.该设备具有麦克风,并且不管出现此错误,使用麦克风进行录音都可以.

以下代码重现此错误(在服务内部称为)：

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);

将采样率设置为较低的值(如8000)不能解决问题.将channelMode设置为立体声不能解决问题.

在麦克风可用的情况下在我的服务中执行此代码时,将返回以下错误：

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]

有谁能解决这个问题？

解决方法:

我和你有同样的问题.就我而言,事实证明,当我通过USB将Android手机连接到计算机时,手机SD卡已作为USB存储设备安装到PC上.
(这使得该应用无法访问手机SD卡上的文件)

关闭Xperia 10的USB存储器后,它工作正常.

标签：microphone,audio-recording,audio,java,android
来源： https://codeday.me/bug/20191208/2093958.html