int WebRtc_CreateDelayEstimator(void** handle,
int spectrum_size,
int max_delay,
int lookahead) {
DelayEstimator_t *self = NULL;
// Check if the sub band used in the delay estimation is small enough to
// fit the binary spectra in a uint32.
assert(kBandLast - kBandFirst < 32);
if (handle == NULL) {
return -1;
}
if (spectrum_size < kBandLast) {
return -1;
}
self = malloc(sizeof(DelayEstimator_t));
*handle = self;
if (self == NULL) {
return -1;
}
self->mean_far_spectrum = NULL;
self->mean_near_spectrum = NULL;
// Create binary delay estimator.
if (WebRtc_CreateBinaryDelayEstimator(&self->binary_handle,
max_delay,
lookahead) != 0) {
WebRtc_FreeDelayEstimator(self);
self = NULL;
return -1;
}
// Allocate memory for spectrum buffers
self->mean_far_spectrum = malloc(spectrum_size * sizeof(SpectrumType_t));
if (self->mean_far_spectrum == NULL) {
WebRtc_FreeDelayEstimator(self);
self = NULL;
return -1;
}
self->mean_near_spectrum = malloc(spectrum_size * sizeof(SpectrumType_t));
if (self->mean_near_spectrum == NULL) {
WebRtc_FreeDelayEstimator(self);
self = NULL;
return -1;
}
self->spectrum_size = spectrum_size;
return 0;
}
int WebRtcAec_FreeAec(aec_t *aec)
{
if (aec == NULL) {
return -1;
}
WebRtc_FreeBuffer(aec->nearFrBuf);
WebRtc_FreeBuffer(aec->outFrBuf);
WebRtc_FreeBuffer(aec->nearFrBufH);
WebRtc_FreeBuffer(aec->outFrBufH);
WebRtc_FreeBuffer(aec->far_buf);
WebRtc_FreeBuffer(aec->far_buf_windowed);
#ifdef WEBRTC_AEC_DEBUG_DUMP
WebRtc_FreeBuffer(aec->far_time_buf);
#endif
WebRtc_FreeDelayEstimator(aec->delay_estimator);
free(aec);
return 0;
}
