open sl java audio_android – 如何配置OpenSL来记录语音呼叫

我正在使用MediaRecorder VOICE_CALL音频源处理一个呼叫记录器应用程序,在一些marshmallow设备中它正在崩溃,然后我将源更改为MIC,这里传入的语音没有被记录.由于这个

java限制现在我正在使用原生的android代码来录制语音通话.

我设法使用

native-audio录音机为录音机录制音频.问题出在本机代码中,它只记录单侧语音,传入的语音没有被记录.然后我尝试了语音通信预设配置,它没有录音.以下是预设配置代码.

const SLInterfaceID id[2] = { SL_IID_ANDROIDSIMPLEBUFFERQUEUE,SL_IID_ANDROIDCONFIGURATION};

const SLboolean req[2] = { SL_BOOLEAN_TRUE,SL_BOOLEAN_TRUE};

result = (*engineEngine)->CreateAudioRecorder(engineEngine, &recorderObject, &audioSrc,

&audioSnk, 2, id, req);

SLAndroidConfigurationItf inputConfig;

result = (*recorderObject)->GetInterface(recorderObject,

SL_IID_ANDROIDCONFIGURATION,

&inputConfig);

if (SL_RESULT_SUCCESS == result) {

SLuint32 presetValue =SL_ANDROID_RECORDING_PRESET_VOICE_COMMUNICATION ;

(*inputConfig)->SetConfiguration(inputConfig,

SL_ANDROID_KEY_RECORDING_PRESET,

&presetValue,

sizeof(SLuint32));

__android_log_print(ANDROID_LOG_DEBUG, "LOG_TAG", "\n Native PCM Conf Success\n");

} else{

__android_log_print(ANDROID_LOG_DEBUG, "LOG_TAG", "\n Native PCM Conf Error %d\n",result);

}

添加预设配置后,开始录制语音通话时出现系统错误：

E/AudioRecord: Could not get audio input for record source 7, sample

rate 16000, format 0x1, channel mask 0x10, session 925, flags 0

E/libOpenSLES: android_audioRecorder_realize(0x559548c350) error

creating AudioRecord object; status -22

W/libOpenSLES: Leaving Object::Realize (SL_RESULT_CONTENT_UNSUPPORTED)