static void volume_process(MSFilter *f){
mblk_t *m;
Volume *v=(Volume*)f->data;
float target_gain;
/* Important notice: any processes called herein can modify v->target_gain, at
* end of this function apply_gain() is called, thus: later process calls can
* override this target gain, and order must be well thought out
*/
if (v->agc_enabled || v->peer!=NULL){
mblk_t *om;
int nbytes=v->nsamples*2;
ms_bufferizer_put_from_queue(v->buffer,f->inputs[0]);
while(ms_bufferizer_get_avail(v->buffer)>=nbytes){
om=allocb(nbytes,0);
ms_bufferizer_read(v->buffer,om->b_wptr,nbytes);
om->b_wptr+=nbytes;
update_energy((int16_t*)om->b_rptr, v->nsamples, v);
target_gain = v->static_gain;
if (v->peer) /* this ptr set = echo limiter enable flag */
target_gain = volume_echo_avoider_process(v, om);
/* Multiply with gain from echo limiter, not "choose smallest". Why?
* Remote talks, local echo suppress via mic path, but still audible in
* remote speaker. AGC operates fully, too (local speaker close to local mic!);
* having agc gain reduction also contribute to total reduction makes sense.
*/
if (v->agc_enabled) target_gain/= volume_agc_process(v, om);
if (v->noise_gate_enabled)
volume_noise_gate_process(v, v->level_pk, om);
apply_gain(v, om, target_gain);
ms_queue_put(f->outputs[0],om);
}
}else{
/*light processing: no agc. Work in place in the input buffer*/
while((m=ms_queue_get(f->inputs[0]))!=NULL){
update_energy((int16_t*)m->b_rptr, (m->b_wptr - m->b_rptr) / 2, v);
target_gain = v->static_gain;
if (v->noise_gate_enabled)
volume_noise_gate_process(v, v->level_pk, m);
apply_gain(v, m, target_gain);
ms_queue_put(f->outputs[0],m);
}
}
}
static void vad_dtx_process(MSFilter *f){
VadDtxContext *ctx=(VadDtxContext*)f->data;
mblk_t *m;
while((m=ms_queue_get(f->inputs[0]))!=NULL){
update_energy(ctx,(int16_t*)m->b_rptr, (m->b_wptr - m->b_rptr) / 2, f->ticker->time);
if (ortp_extremum_get_current(&ctx->max)<silence_threshold){
if (!ctx->silence_mode){
MSCngData cngdata={0};
cngdata.datasize=1; /*only noise level*/
cngdata.data[0]=0; /*noise level set to zero for the moment*/
ms_message("vad_dtx_process(): silence period detected.");
ctx->silence_mode=1;
ms_filter_notify(f, MS_VAD_DTX_NO_VOICE, &cngdata);
}
}else{
if (ctx->silence_mode){
ms_message("vad_dtx_process(): silence period finished.");
ctx->silence_mode=0;
ms_filter_notify(f, MS_VAD_DTX_VOICE, NULL);
}
}
ms_queue_put(f->outputs[0],m);
}
}
