webrtc/modules/video_processing/util/denoiser_filter.cc

/*
 *  Copyright (c) 2015 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 "webrtc/modules/video_processing/util/denoiser_filter.h"
#include "webrtc/modules/video_processing/util/denoiser_filter_c.h"
#include "webrtc/modules/video_processing/util/denoiser_filter_neon.h"
#include "webrtc/modules/video_processing/util/denoiser_filter_sse2.h"
#include "webrtc/system_wrappers/include/cpu_features_wrapper.h"

namespace webrtc {

const int kMotionMagnitudeThreshold = 8 * 3;
const int kSumDiffThreshold = 16 * 16 * 2;
const int kSumDiffThresholdHigh = 600;

DenoiserFilter* DenoiserFilter::Create() {
  DenoiserFilter* filter = NULL;

// If we know the minimum architecture at compile time, avoid CPU detection.
#if defined(WEBRTC_ARCH_X86_FAMILY)
  // x86 CPU detection required.
  if (WebRtc_GetCPUInfo(kSSE2)) {
    filter = new DenoiserFilterSSE2();
  } else {
    filter = new DenoiserFilterC();
  }
#elif defined(WEBRTC_DETECT_NEON)
  if (WebRtc_GetCPUFeaturesARM() & kCPUFeatureNEON) {
    filter = new DenoiserFilterNEON();
  } else {
    filter = new DenoiserFilterC();
  }
#else
  filter = new DenoiserFilterC();
#endif

  return filter;
}

}  // namespace webrtc