tg2sip/libtgvoip/os/android/AudioInputOpenSLES.cpp

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//
// libtgvoip is free and unencumbered public domain software.
// For more information, see http://unlicense.org or the UNLICENSE file
// you should have received with this source code distribution.
//
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include "AudioInputOpenSLES.h"
#include "../../logging.h"
#include "OpenSLEngineWrapper.h"
#define CHECK_SL_ERROR(res, msg) if(res!=SL_RESULT_SUCCESS){ LOGE(msg); return; }
#define BUFFER_SIZE 960 // 20 ms
using namespace tgvoip;
using namespace tgvoip::audio;
unsigned int AudioInputOpenSLES::nativeBufferSize;
AudioInputOpenSLES::AudioInputOpenSLES(){
slEngine=OpenSLEngineWrapper::CreateEngine();
LOGI("Native buffer size is %u samples", nativeBufferSize);
if(nativeBufferSize<BUFFER_SIZE && BUFFER_SIZE % nativeBufferSize!=0){
LOGE("20ms is not divisible by native buffer size!!");
}else if(nativeBufferSize>BUFFER_SIZE && nativeBufferSize%BUFFER_SIZE!=0){
LOGE("native buffer size is not multiple of 20ms!!");
nativeBufferSize+=nativeBufferSize%BUFFER_SIZE;
}
if(nativeBufferSize==BUFFER_SIZE)
nativeBufferSize*=2;
LOGI("Adjusted native buffer size is %u", nativeBufferSize);
buffer=(int16_t*)calloc(BUFFER_SIZE, sizeof(int16_t));
nativeBuffer=(int16_t*)calloc((size_t) nativeBufferSize, sizeof(int16_t));
slRecorderObj=NULL;
}
AudioInputOpenSLES::~AudioInputOpenSLES(){
//Stop();
(*slBufferQueue)->Clear(slBufferQueue);
(*slRecorderObj)->Destroy(slRecorderObj);
slRecorderObj=NULL;
slRecorder=NULL;
slBufferQueue=NULL;
slEngine=NULL;
OpenSLEngineWrapper::DestroyEngine();
free(buffer);
buffer=NULL;
free(nativeBuffer);
nativeBuffer=NULL;
}
void AudioInputOpenSLES::BufferCallback(SLAndroidSimpleBufferQueueItf bq, void *context){
((AudioInputOpenSLES*)context)->HandleSLCallback();
}
void AudioInputOpenSLES::Configure(uint32_t sampleRate, uint32_t bitsPerSample, uint32_t channels){
assert(slRecorderObj==NULL);
SLDataLocator_IODevice loc_dev = {SL_DATALOCATOR_IODEVICE,
SL_IODEVICE_AUDIOINPUT,
SL_DEFAULTDEVICEID_AUDIOINPUT, NULL};
SLDataSource audioSrc = {&loc_dev, NULL};
SLDataLocator_AndroidSimpleBufferQueue loc_bq =
{SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE, 1};
SLDataFormat_PCM format_pcm = {SL_DATAFORMAT_PCM, channels, sampleRate*1000,
SL_PCMSAMPLEFORMAT_FIXED_16, SL_PCMSAMPLEFORMAT_FIXED_16,
channels==2 ? (SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT) : SL_SPEAKER_FRONT_CENTER, SL_BYTEORDER_LITTLEENDIAN};
SLDataSink audioSnk = {&loc_bq, &format_pcm};
const SLInterfaceID id[2] = {SL_IID_ANDROIDSIMPLEBUFFERQUEUE, SL_IID_ANDROIDCONFIGURATION};
const SLboolean req[2] = {SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE};
SLresult result = (*slEngine)->CreateAudioRecorder(slEngine, &slRecorderObj, &audioSrc, &audioSnk, 2, id, req);
CHECK_SL_ERROR(result, "Error creating recorder");
SLAndroidConfigurationItf recorderConfig;
result = (*slRecorderObj)->GetInterface(slRecorderObj, SL_IID_ANDROIDCONFIGURATION, &recorderConfig);
SLint32 streamType = SL_ANDROID_RECORDING_PRESET_VOICE_RECOGNITION;
result = (*recorderConfig)->SetConfiguration(recorderConfig, SL_ANDROID_KEY_RECORDING_PRESET, &streamType, sizeof(SLint32));
result=(*slRecorderObj)->Realize(slRecorderObj, SL_BOOLEAN_FALSE);
CHECK_SL_ERROR(result, "Error realizing recorder");
result=(*slRecorderObj)->GetInterface(slRecorderObj, SL_IID_RECORD, &slRecorder);
CHECK_SL_ERROR(result, "Error getting recorder interface");
result=(*slRecorderObj)->GetInterface(slRecorderObj, SL_IID_ANDROIDSIMPLEBUFFERQUEUE, &slBufferQueue);
CHECK_SL_ERROR(result, "Error getting buffer queue");
result=(*slBufferQueue)->RegisterCallback(slBufferQueue, AudioInputOpenSLES::BufferCallback, this);
CHECK_SL_ERROR(result, "Error setting buffer queue callback");
(*slBufferQueue)->Enqueue(slBufferQueue, nativeBuffer, nativeBufferSize*sizeof(int16_t));
}
void AudioInputOpenSLES::Start(){
SLresult result=(*slRecorder)->SetRecordState(slRecorder, SL_RECORDSTATE_RECORDING);
CHECK_SL_ERROR(result, "Error starting record");
}
void AudioInputOpenSLES::Stop(){
SLresult result=(*slRecorder)->SetRecordState(slRecorder, SL_RECORDSTATE_STOPPED);
CHECK_SL_ERROR(result, "Error stopping record");
}
void AudioInputOpenSLES::HandleSLCallback(){
//SLmillisecond pMsec = 0;
//(*slRecorder)->GetPosition(slRecorder, &pMsec);
//LOGI("Callback! pos=%lu", pMsec);
//InvokeCallback((unsigned char*)buffer, BUFFER_SIZE*sizeof(int16_t));
//fwrite(nativeBuffer, 1, nativeBufferSize*2, test);
if(nativeBufferSize==BUFFER_SIZE){
//LOGV("nativeBufferSize==BUFFER_SIZE");
InvokeCallback((unsigned char *) nativeBuffer, BUFFER_SIZE*sizeof(int16_t));
}else if(nativeBufferSize<BUFFER_SIZE){
//LOGV("nativeBufferSize<BUFFER_SIZE");
if(positionInBuffer>=BUFFER_SIZE){
InvokeCallback((unsigned char *) buffer, BUFFER_SIZE*sizeof(int16_t));
positionInBuffer=0;
}
memcpy(((unsigned char*)buffer)+positionInBuffer*2, nativeBuffer, (size_t)nativeBufferSize*2);
positionInBuffer+=nativeBufferSize;
}else if(nativeBufferSize>BUFFER_SIZE){
//LOGV("nativeBufferSize>BUFFER_SIZE");
for(unsigned int offset=0;offset<nativeBufferSize;offset+=BUFFER_SIZE){
InvokeCallback(((unsigned char *) nativeBuffer)+offset*2, BUFFER_SIZE*sizeof(int16_t));
}
}
(*slBufferQueue)->Enqueue(slBufferQueue, nativeBuffer, nativeBufferSize*sizeof(int16_t));
}