Index: webrtc/modules/audio_processing/utility/ooura_fft.h |
diff --git a/webrtc/modules/audio_processing/utility/ooura_fft.h b/webrtc/modules/audio_processing/utility/ooura_fft.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..a1b9f04f5442be10aa3edc4657c2056ed454bbfe |
--- /dev/null |
+++ b/webrtc/modules/audio_processing/utility/ooura_fft.h |
@@ -0,0 +1,60 @@ |
+/* |
+ * 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_ |