/* TODO: rate also beyond 8000 */
static EqualizerState * equalizer_state_new(int nfft) {
EqualizerState *s=(EqualizerState *)ms_new0(EqualizerState,1);
s->rate=8000;
s->nfft=nfft;
s->fft_cpx=(ms_word16_t*)ms_new0(ms_word16_t,s->nfft);
equalizer_state_flatten(s);
s->fir_len=s->nfft;
s->fir=(ms_word16_t*)ms_new(ms_word16_t,s->fir_len);
s->mem=(ms_mem_t*)ms_new0(ms_mem_t,s->fir_len);
s->needs_update=TRUE;
s->active=TRUE;
return s;
}
static void equalizer_rate_update( EqualizerState* s, int rate ){
int nFFT;
if( rate < 16000 ){
nFFT = 128;
} else if( rate < 32000){
nFFT = 256;
} else {
nFFT = 512;
}
ms_message("Equalizer rate: %d, selecting %d steps for FFT", rate, nFFT);
s->rate=rate;
s->nfft=nFFT;
if (s->fft_cpx != NULL) ms_free(s->fft_cpx);
s->fft_cpx=(ms_word16_t*)ms_new0(ms_word16_t,s->nfft);
equalizer_state_flatten(s);
s->fir_len=s->nfft;
if (s->fir != NULL) ms_free(s->fir);
s->fir=(ms_word16_t*)ms_new0(ms_word16_t,s->fir_len);
if (s->mem != NULL) ms_free(s->mem);
s->mem=(ms_mem_t*)ms_new0(ms_mem_t,s->fir_len);
s->needs_update=TRUE;
}
