Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
       3             :  *
       4             :  *  Use of this source code is governed by a BSD-style license
       5             :  *  that can be found in the LICENSE file in the root of the source
       6             :  *  tree. An additional intellectual property rights grant can be found
       7             :  *  in the file PATENTS.  All contributing project authors may
       8             :  *  be found in the AUTHORS file in the root of the source tree.
       9             :  */
      10             : 
      11             : #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_H_
      12             : #define WEBRTC_MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_H_
      13             : 
      14             : #include "webrtc/typedefs.h"
      15             : 
      16             : namespace webrtc {
      17             : 
      18             : #if defined(WEBRTC_ARCH_X86_FAMILY)
      19             : void cft1st_128_SSE2(float* a);
      20             : void cftmdl_128_SSE2(float* a);
      21             : void rftfsub_128_SSE2(float* a);
      22             : void rftbsub_128_SSE2(float* a);
      23             : #endif
      24             : 
      25             : #if defined(MIPS_FPU_LE)
      26             : void cft1st_128_mips(float* a);
      27             : void cftmdl_128_mips(float* a);
      28             : void rftfsub_128_mips(float* a);
      29             : void rftbsub_128_mips(float* a);
      30             : #endif
      31             : 
      32             : #if defined(WEBRTC_HAS_NEON)
      33             : void cft1st_128_neon(float* a);
      34             : void cftmdl_128_neon(float* a);
      35             : void rftfsub_128_neon(float* a);
      36             : void rftbsub_128_neon(float* a);
      37             : #endif
      38             : 
      39           0 : class OouraFft {
      40             :  public:
      41             :   OouraFft();
      42             :   ~OouraFft();
      43             :   void Fft(float* a) const;
      44             :   void InverseFft(float* a) const;
      45             : 
      46             :  private:
      47             :   void cft1st_128(float* a) const;
      48             :   void cftmdl_128(float* a) const;
      49             :   void rftfsub_128(float* a) const;
      50             :   void rftbsub_128(float* a) const;
      51             : 
      52             :   void cftfsub_128(float* a) const;
      53             :   void cftbsub_128(float* a) const;
      54             :   void bitrv2_128(float* a) const;
      55             :   bool use_sse2_;
      56             : };
      57             : 
      58             : }  // namespace webrtc
      59             : 
      60             : #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_H_