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/*
* Copyright (c) 2016 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.
*/
#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_H_
#define WEBRTC_MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_H_
#include "webrtc/typedefs.h"
namespace webrtc {
#if defined(WEBRTC_ARCH_X86_FAMILY)
void cft1st_128_SSE2(float* a);
void cftmdl_128_SSE2(float* a);
void rftfsub_128_SSE2(float* a);
void rftbsub_128_SSE2(float* a);
#endif
#if defined(MIPS_FPU_LE)
void cft1st_128_mips(float* a);
void cftmdl_128_mips(float* a);
void rftfsub_128_mips(float* a);
void rftbsub_128_mips(float* a);
#endif
#if defined(WEBRTC_HAS_NEON)
void cft1st_128_neon(float* a);
void cftmdl_128_neon(float* a);
void rftfsub_128_neon(float* a);
void rftbsub_128_neon(float* a);
#endif
class OouraFft {
public:
OouraFft();
~OouraFft();
void Fft(float* a) const;
void InverseFft(float* a) const;
private:
void cft1st_128(float* a) const;
void cftmdl_128(float* a) const;
void rftfsub_128(float* a) const;
void rftbsub_128(float* a) const;
void cftfsub_128(float* a) const;
void cftbsub_128(float* a) const;
void bitrv2_128(float* a) const;
bool use_sse2_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_H_