tg2sip/libtgvoip/os/android/AudioOutputOpenSLES.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 <sys/time.h>
#include <unistd.h>
#include <assert.h>
#include "AudioOutputOpenSLES.h"
#include "../../logging.h"
#include "../../VoIPController.h"
#include "OpenSLEngineWrapper.h"
#include "AudioInputAndroid.h"
#define CHECK_SL_ERROR(res, msg) if(res!=SL_RESULT_SUCCESS){ LOGE(msg); failed=true; return; }
#define BUFFER_SIZE 960 // 20 ms
using namespace tgvoip;
using namespace tgvoip::audio;
unsigned int AudioOutputOpenSLES::nativeBufferSize;
AudioOutputOpenSLES::AudioOutputOpenSLES(){
SLresult result;
slEngine=OpenSLEngineWrapper::CreateEngine();
const SLInterfaceID pOutputMixIDs[] = {};
const SLboolean pOutputMixRequired[] = {};
result = (*slEngine)->CreateOutputMix(slEngine, &slOutputMixObj, 0, pOutputMixIDs, pOutputMixRequired);
CHECK_SL_ERROR(result, "Error creating output mix");
result = (*slOutputMixObj)->Realize(slOutputMixObj, SL_BOOLEAN_FALSE);
CHECK_SL_ERROR(result, "Error realizing output mix");
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!!");
nativeBufferSize=BUFFER_SIZE;
}else if(nativeBufferSize>BUFFER_SIZE && nativeBufferSize%BUFFER_SIZE!=0){
LOGE("native buffer size is not multiple of 20ms!!");
nativeBufferSize+=nativeBufferSize%BUFFER_SIZE;
}
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));
slPlayerObj=NULL;
remainingDataSize=0;
}
AudioOutputOpenSLES::~AudioOutputOpenSLES(){
if(!stopped)
Stop();
(*slBufferQueue)->Clear(slBufferQueue);
LOGV("destroy slPlayerObj");
(*slPlayerObj)->Destroy(slPlayerObj);
LOGV("destroy slOutputMixObj");
(*slOutputMixObj)->Destroy(slOutputMixObj);
OpenSLEngineWrapper::DestroyEngine();
free(buffer);
free(nativeBuffer);
}
void AudioOutputOpenSLES::SetNativeBufferSize(unsigned int size){
AudioOutputOpenSLES::nativeBufferSize=size;
}
void AudioOutputOpenSLES::BufferCallback(SLAndroidSimpleBufferQueueItf bq, void *context){
((AudioOutputOpenSLES*)context)->HandleSLCallback();
}
void AudioOutputOpenSLES::Configure(uint32_t sampleRate, uint32_t bitsPerSample, uint32_t channels){
assert(slPlayerObj==NULL);
SLDataLocator_AndroidSimpleBufferQueue locatorBufferQueue =
{SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE, 1};
SLDataFormat_PCM formatPCM = {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};
SLDataSource audioSrc = {&locatorBufferQueue, &formatPCM};
SLDataLocator_OutputMix locatorOutMix = {SL_DATALOCATOR_OUTPUTMIX, slOutputMixObj};
SLDataSink audioSnk = {&locatorOutMix, NULL};
const SLInterfaceID id[2] = {SL_IID_BUFFERQUEUE, SL_IID_ANDROIDCONFIGURATION};
const SLboolean req[2] = {SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE};
SLresult result = (*slEngine)->CreateAudioPlayer(slEngine, &slPlayerObj, &audioSrc, &audioSnk, 2, id, req);
CHECK_SL_ERROR(result, "Error creating player");
SLAndroidConfigurationItf playerConfig;
result = (*slPlayerObj)->GetInterface(slPlayerObj, SL_IID_ANDROIDCONFIGURATION, &playerConfig);
SLint32 streamType = SL_ANDROID_STREAM_VOICE;
result = (*playerConfig)->SetConfiguration(playerConfig, SL_ANDROID_KEY_STREAM_TYPE, &streamType, sizeof(SLint32));
result=(*slPlayerObj)->Realize(slPlayerObj, SL_BOOLEAN_FALSE);
CHECK_SL_ERROR(result, "Error realizing player");
result=(*slPlayerObj)->GetInterface(slPlayerObj, SL_IID_PLAY, &slPlayer);
CHECK_SL_ERROR(result, "Error getting player interface");
result=(*slPlayerObj)->GetInterface(slPlayerObj, SL_IID_ANDROIDSIMPLEBUFFERQUEUE, &slBufferQueue);
CHECK_SL_ERROR(result, "Error getting buffer queue");
result=(*slBufferQueue)->RegisterCallback(slBufferQueue, AudioOutputOpenSLES::BufferCallback, this);
CHECK_SL_ERROR(result, "Error setting buffer queue callback");
(*slBufferQueue)->Enqueue(slBufferQueue, nativeBuffer, nativeBufferSize*sizeof(int16_t));
}
bool AudioOutputOpenSLES::IsPhone(){
return false;
}
void AudioOutputOpenSLES::EnableLoudspeaker(bool enabled){
}
void AudioOutputOpenSLES::Start(){
stopped=false;
SLresult result=(*slPlayer)->SetPlayState(slPlayer, SL_PLAYSTATE_PLAYING);
CHECK_SL_ERROR(result, "Error starting player");
}
void AudioOutputOpenSLES::Stop(){
stopped=true;
LOGV("Stopping OpenSL output");
SLresult result=(*slPlayer)->SetPlayState(slPlayer, SL_PLAYSTATE_PAUSED);
CHECK_SL_ERROR(result, "Error starting player");
}
void AudioOutputOpenSLES::HandleSLCallback(){
/*if(stopped){
//LOGV("left HandleSLCallback early");
return;
}*/
//LOGV("before InvokeCallback");
if(!stopped){
while(remainingDataSize<nativeBufferSize*2){
assert(remainingDataSize+BUFFER_SIZE*2<10240);
InvokeCallback(remainingData+remainingDataSize, BUFFER_SIZE*2);
remainingDataSize+=BUFFER_SIZE*2;
}
memcpy(nativeBuffer, remainingData, nativeBufferSize*2);
remainingDataSize-=nativeBufferSize*2;
if(remainingDataSize>0)
memmove(remainingData, remainingData+nativeBufferSize*2, remainingDataSize);
//InvokeCallback((unsigned char *) nativeBuffer, nativeBufferSize*sizeof(int16_t));
}else{
memset(nativeBuffer, 0, nativeBufferSize*2);
}
(*slBufferQueue)->Enqueue(slBufferQueue, nativeBuffer, nativeBufferSize*sizeof(int16_t));
//LOGV("left HandleSLCallback");
}
bool AudioOutputOpenSLES::IsPlaying(){
if(slPlayer){
uint32_t state;
(*slPlayer)->GetPlayState(slPlayer, &state);
return state==SL_PLAYSTATE_PLAYING;
}
return false;
}
float AudioOutputOpenSLES::GetLevel(){
return 0; // we don't use this anyway
}