modules/audio_processing/ns/noise_suppression_x.c

/*
 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "modules/audio_processing/ns/noise_suppression_x.h"

#include <stdlib.h>

#include "common_audio/signal_processing/include/real_fft.h"
#include "modules/audio_processing/ns/nsx_core.h"
#include "modules/audio_processing/ns/nsx_defines.h"

NsxHandle* WebRtcNsx_Create() {
  NoiseSuppressionFixedC* self = malloc(sizeof(NoiseSuppressionFixedC));
  WebRtcSpl_Init();
  self->real_fft = NULL;
  self->initFlag = 0;
  return (NsxHandle*)self;
}

void WebRtcNsx_Free(NsxHandle* nsxInst) {
  WebRtcSpl_FreeRealFFT(((NoiseSuppressionFixedC*)nsxInst)->real_fft);
  free(nsxInst);
}

int WebRtcNsx_Init(NsxHandle* nsxInst, uint32_t fs) {
  return WebRtcNsx_InitCore((NoiseSuppressionFixedC*)nsxInst, fs);
}

int WebRtcNsx_set_policy(NsxHandle* nsxInst, int mode) {
  return WebRtcNsx_set_policy_core((NoiseSuppressionFixedC*)nsxInst, mode);
}

void WebRtcNsx_Process(NsxHandle* nsxInst,
                      const short* const* speechFrame,
                      int num_bands,
                      short* const* outFrame) {
  WebRtcNsx_ProcessCore((NoiseSuppressionFixedC*)nsxInst, speechFrame,
                        num_bands, outFrame);
}

const uint32_t* WebRtcNsx_noise_estimate(const NsxHandle* nsxInst,
                                         int* q_noise) {
  *q_noise = 11;
  const NoiseSuppressionFixedC* self = (const NoiseSuppressionFixedC*)nsxInst;
  if (nsxInst == NULL || self->initFlag == 0) {
    return NULL;
  }
  *q_noise += self->prevQNoise;
  return self->prevNoiseU32;
}

size_t WebRtcNsx_num_freq() {
  return HALF_ANAL_BLOCKL;
}