JNIEXPORT jshortArray JNICALL Java_com_jabber_audio_encoder_AudioWebrtcAecm_yy_1webrtc_1aecm_1process
(JNIEnv *env, jobject obj, jint handle, jshortArray nearendNoisy, jshortArray nearendClean){ //nearendNoisy , nearendClean
// if( 0!=WebRtcAec_BufferFarend(haec,farend,160) ) printf("bufferfarend error\n");
// if( 0!=WebRtcAec_Process(haec,nearend,NULL,output,NULL,160,100,0) ) printf("process error\n");
//
// fwrite(output,2,160,foutput);
//get handle
void* AECM_instance = (void* )handle;
//create native shorts from java shorts
jshort *native_nearend_noisy = (*env)->GetShortArrayElements(env, nearendNoisy, NULL);
jshort *native_nearend_clean = (*env)->GetShortArrayElements(env, nearendClean, NULL);
//allocate memory for output data
jint length = (*env)->GetArrayLength(env, nearendNoisy);
jshortArray temp = (*env)->NewShortArray(env, length);
jshort *native_output_frame = (*env)->GetShortArrayElements(env, temp, 0);
// int32_t WebRtcAecm_BufferFarend(void* aecmInst,
// const int16_t* farend,
// int16_t nrOfSamples);
short farend[160] = {0};
if( 0!=WebRtcAecm_BufferFarend(AECM_instance,farend,160) ){ //farend value??? audio
__android_log_print(ANDROID_LOG_ERROR ,TAG ,"WebRtcAec_BufferFarend failed");
}
// int32_t WebRtcAecm_Process(void* aecmInst,
// const int16_t* nearendNoisy,
// const int16_t* nearendClean,
// int16_t* out,
// int16_t nrOfSamples,
// int16_t msInSndCardBuf);
// if( 0!=WebRtcAecm_Process(AECM_instance,nearendNoisy,nearendClean,native_output_frame,160,0) ){
if( 0!=WebRtcAecm_Process(AECM_instance,native_nearend_noisy,native_nearend_clean,native_output_frame,160,0) ){
__android_log_print(ANDROID_LOG_ERROR ,TAG ,"WebRtcAec_Process failed ");
}
//convert native output to java layer output
jshortArray output_shorts = (*env)->NewShortArray(env, length);
(*env)->SetShortArrayRegion(env, output_shorts, 0, length, native_output_frame);
//cleanup and return
(*env)->ReleaseShortArrayElements(env, nearendNoisy, native_nearend_noisy, 0);
(*env)->ReleaseShortArrayElements(env, nearendClean, native_nearend_clean, 0);
(*env)->ReleaseShortArrayElements(env, temp, native_output_frame, 0);
return output_shorts;
}
/* inputs[0]= reference signal from far end (sent to soundcard)
* inputs[1]= near speech & echo signal (read from soundcard)
* outputs[0]= is a copy of inputs[0] to be sent to soundcard
* outputs[1]= near end speech, echo removed - towards far end
*/
static void webrtc_aec_process(MSFilter *f)
{
WebRTCAECState *s = (WebRTCAECState *) f->data;
int nbytes = s->framesize * 2;
mblk_t *refm;
uint8_t *ref, *echo;
if (s->bypass_mode) {
while ((refm = ms_queue_get(f->inputs[0])) != NULL) {
ms_queue_put(f->outputs[0], refm);
}
while ((refm = ms_queue_get(f->inputs[1])) != NULL) {
ms_queue_put(f->outputs[1], refm);
}
return;
}
if (f->inputs[0] != NULL) {
if (s->echostarted) {
while ((refm = ms_queue_get(f->inputs[0])) != NULL) {
refm=ms_audio_flow_controller_process(&s->afc,refm);
if (refm){
mblk_t *cp=dupmsg(refm);
ms_bufferizer_put(&s->delayed_ref,cp);
ms_bufferizer_put(&s->ref,refm);
}
}
} else {
ms_warning("Getting reference signal but no echo to synchronize on.");
ms_queue_flush(f->inputs[0]);
}
}
ms_bufferizer_put_from_queue(&s->echo, f->inputs[1]);
ref = (uint8_t *) alloca(nbytes);
echo = (uint8_t *) alloca(nbytes);
while (ms_bufferizer_read(&s->echo, echo, nbytes) >= nbytes) {
mblk_t *oecho = allocb(nbytes, 0);
int avail;
int avail_samples;
if (!s->echostarted) s->echostarted = TRUE;
if ((avail = ms_bufferizer_get_avail(&s->delayed_ref)) < ((s->nominal_ref_samples * 2) + nbytes)) {
/*we don't have enough to read in a reference signal buffer, inject silence instead*/
refm = allocb(nbytes, 0);
memset(refm->b_wptr, 0, nbytes);
refm->b_wptr += nbytes;
ms_bufferizer_put(&s->delayed_ref, refm);
ms_queue_put(f->outputs[0], dupmsg(refm));
if (!s->using_zeroes) {
ms_warning("Not enough ref samples, using zeroes");
s->using_zeroes = TRUE;
}
} else {
if (s->using_zeroes) {
ms_message("Samples are back.");
s->using_zeroes = FALSE;
}
/* read from our no-delay buffer and output */
refm = allocb(nbytes, 0);
if (ms_bufferizer_read(&s->ref, refm->b_wptr, nbytes) == 0) {
ms_fatal("Should never happen");
}
refm->b_wptr += nbytes;
ms_queue_put(f->outputs[0], refm);
}
/*now read a valid buffer of delayed ref samples*/
if (ms_bufferizer_read(&s->delayed_ref, ref, nbytes) == 0) {
ms_fatal("Should never happen");
}
avail -= nbytes;
avail_samples = avail / 2;
if (avail_samples < s->min_ref_samples || s->min_ref_samples == -1) {
s->min_ref_samples = avail_samples;
}
#ifdef EC_DUMP
if (s->reffile)
fwrite(ref, nbytes, 1, s->reffile);
if (s->echofile)
fwrite(echo, nbytes, 1, s->echofile);
#endif
if (WebRtcAecm_BufferFarend(s->aecmInst, (const WebRtc_Word16 *) ref, s->framesize)!=0)
ms_error("WebRtcAecm_BufferFarend() failed.");
if (WebRtcAecm_Process(s->aecmInst, (const WebRtc_Word16 *) echo, NULL, (WebRtc_Word16 *) oecho->b_wptr, s->framesize, 0)!=0)
ms_error("WebRtcAecm_Process() failed.");
#ifdef EC_DUMP
if (s->cleanfile)
fwrite(oecho->b_wptr, nbytes, 1, s->cleanfile);
#endif
oecho->b_wptr += nbytes;
ms_queue_put(f->outputs[1], oecho);
}
/*verify our ref buffer does not become too big, meaning that we are receiving more samples than we are sending*/
if ((((uint32_t) (f->ticker->time - s->flow_control_time)) >= flow_control_interval_ms) && (s->min_ref_samples != -1)) {
int diff = s->min_ref_samples - s->nominal_ref_samples;
if (diff > (nbytes / 2)) {
int purge = diff - (nbytes / 2);
ms_warning("echo canceller: we are accumulating too much reference signal, need to throw out %i samples", purge);
ms_audio_flow_controller_set_target(&s->afc, purge, (flow_control_interval_ms * s->samplerate) / 1000);
}
s->min_ref_samples = -1;
s->flow_control_time = f->ticker->time;
}
}
int KotiAEC_process(const int16_t* farend, const int16_t* nearend, int16_t* out)
{
int ret = -1, i = 0, frame_size = 0;
switch(aec_core_used)
{
#ifdef WEBRTC_AEC_CORE_ENABLED
case WEBRTC_AEC:
if(farend)
WebRtcAec_BufferFarend(webrtc_aec_pty.webrtc_aec, farend, webrtc_aec_pty.frame_size);
if(!WebRtcAec_Process(webrtc_aec_pty.webrtc_aec, nearend, NULL, out, NULL, webrtc_aec_pty.frame_size,
webrtc_aec_pty.sndcard_delay_ms, 0))
{
ret = 0;
}
if(webrtc_aec_pty.webrtc_ns)
{
WebRtcNsx_Process((NsxHandle*)webrtc_aec_pty.webrtc_ns, out, NULL, out, NULL);
if(webrtc_aec_pty.frame_size == 160)
WebRtcNsx_Process((NsxHandle*)webrtc_aec_pty.webrtc_ns, out+80, NULL, out+80, NULL);
}
if(webrtc_aec_pty.webrtc_agc)
{
int32_t out_c; uint8_t warn_status;
WebRtcAgc_Process(webrtc_aec_pty.webrtc_agc, out, NULL, webrtc_aec_pty.frame_size, out, NULL, 32,
&out_c, 1, &warn_status);
}
// if(webrtc_aec_pty.webrtc_ns)
// {
// WebRtcNsx_Process((NsxHandle*)webrtc_aec_pty.webrtc_ns, out, NULL, out, NULL);
// if(webrtc_aec_pty.frame_size == 160)
// WebRtcNsx_Process((NsxHandle*)webrtc_aec_pty.webrtc_ns, out+80, NULL, out+80, NULL);
// }
frame_size = webrtc_aec_pty.frame_size;
break;
case WEBRTC_AECM:
/*
if(farend)
WebRtcAecm_BufferFarend(webrtc_aecm_pty.webrtc_aec, farend, webrtc_aecm_pty.frame_size);
if(!WebRtcAecm_Process(webrtc_aecm_pty.webrtc_aec, nearend, NULL, out, webrtc_aecm_pty.frame_size,
webrtc_aecm_pty.sndcard_delay_ms))
{
ret = 0;
}
*/
memcpy(proc_tmp_buf, nearend, webrtc_aecm_pty.frame_size*2);
if(webrtc_aecm_pty.webrtc_ns)
{
WebRtcNsx_Process((NsxHandle*)webrtc_aecm_pty.webrtc_ns, proc_tmp_buf, NULL, proc_tmp_buf, NULL);
if(webrtc_aecm_pty.frame_size == 160)
WebRtcNsx_Process((NsxHandle*)webrtc_aecm_pty.webrtc_ns, proc_tmp_buf+80, NULL, proc_tmp_buf+80, NULL);
}
if(webrtc_aecm_pty.webrtc_agc)
{
int32_t out_c; uint8_t warn_status;
WebRtcAgc_Process(webrtc_aecm_pty.webrtc_agc, proc_tmp_buf, NULL, webrtc_aecm_pty.frame_size, proc_tmp_buf, NULL, 32,
&out_c, 1, &warn_status);
}
// AEC
if(farend)
WebRtcAecm_BufferFarend(webrtc_aecm_pty.webrtc_aec, farend, webrtc_aecm_pty.frame_size);
if(!WebRtcAecm_Process(webrtc_aecm_pty.webrtc_aec, proc_tmp_buf, NULL, out, webrtc_aecm_pty.frame_size,
webrtc_aecm_pty.sndcard_delay_ms))
{
ret = 0;
}
frame_size = webrtc_aecm_pty.frame_size;
break;
#endif
case SPEEX_AEC:
default:
#ifdef OLD_SPEEX_AEC
speex_echo_cancel((SpeexEchoState*)speex_aec_pty.speex_echo_state, nearend, farend, out, speex_aec_pty.nosie);
if(speex_preprocess((SpeexPreprocessState*)speex_aec_pty.speex_preprocess_state, out, speex_aec_pty.nosie) == 1)
ret = 0;
#else
if(farend)
speex_echo_cancellation((SpeexEchoState*)speex_aec_pty.speex_echo_state, nearend, farend, out);
else
speex_echo_capture((SpeexEchoState*)speex_aec_pty.speex_echo_state, nearend, out);
// speex_preprocess_estimate_update((SpeexPreprocessState*)speex_aec_pty.speex_preprocess_state, out);
if(speex_preprocess_run((SpeexPreprocessState*)speex_aec_pty.speex_preprocess_state, out) == 1)
ret = 0;
#endif
frame_size = speex_aec_pty.frame_size;
break;
}
// if the output sound needed amplify
if(output_sound_amplification != 1.0f && output_sound_amplification > 0)
{
for(; i<frame_size; ++i)
out[i] = out[i]*output_sound_amplification;
}
return ret;
}