diff options
Diffstat (limited to 'webrtc/common_audio/real_fourier_ooura.cc')
| -rw-r--r-- | webrtc/common_audio/real_fourier_ooura.cc | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/webrtc/common_audio/real_fourier_ooura.cc b/webrtc/common_audio/real_fourier_ooura.cc index 8cd4c86..9acda54 100644 --- a/webrtc/common_audio/real_fourier_ooura.cc +++ b/webrtc/common_audio/real_fourier_ooura.cc @@ -8,13 +8,13 @@ * be found in the AUTHORS file in the root of the source tree. */ -#include "webrtc/common_audio/real_fourier_ooura.h" +#include "common_audio/real_fourier_ooura.h" -#include <cmath> #include <algorithm> +#include <cmath> -#include "webrtc/base/checks.h" -#include "webrtc/common_audio/fft4g.h" +#include "common_audio/third_party/ooura/fft_size_256/fft4g.h" +#include "rtc_base/checks.h" namespace webrtc { @@ -28,8 +28,8 @@ void Conjugate(complex<float>* array, size_t complex_length) { } size_t ComputeWorkIpSize(size_t fft_length) { - return static_cast<size_t>(2 + std::ceil(std::sqrt( - static_cast<float>(fft_length)))); + return static_cast<size_t>( + 2 + std::ceil(std::sqrt(static_cast<float>(fft_length)))); } } // namespace @@ -45,11 +45,13 @@ RealFourierOoura::RealFourierOoura(int fft_order) RTC_CHECK_GE(fft_order, 1); } +RealFourierOoura::~RealFourierOoura() = default; + void RealFourierOoura::Forward(const float* src, complex<float>* dest) const { { // This cast is well-defined since C++11. See "Non-static data members" at: // http://en.cppreference.com/w/cpp/numeric/complex - auto dest_float = reinterpret_cast<float*>(dest); + auto* dest_float = reinterpret_cast<float*>(dest); std::copy(src, src + length_, dest_float); WebRtc_rdft(length_, 1, dest_float, work_ip_.get(), work_w_.get()); } @@ -63,7 +65,7 @@ void RealFourierOoura::Forward(const float* src, complex<float>* dest) const { void RealFourierOoura::Inverse(const complex<float>* src, float* dest) const { { - auto dest_complex = reinterpret_cast<complex<float>*>(dest); + auto* dest_complex = reinterpret_cast<complex<float>*>(dest); // The real output array is shorter than the input complex array by one // complex element. const size_t dest_complex_length = complex_length_ - 1; @@ -71,8 +73,8 @@ void RealFourierOoura::Inverse(const complex<float>* src, float* dest) const { // Restore Ooura's conjugate definition. Conjugate(dest_complex, dest_complex_length); // Restore real[n/2] to imag[0]. - dest_complex[0] = complex<float>(dest_complex[0].real(), - src[complex_length_ - 1].real()); + dest_complex[0] = + complex<float>(dest_complex[0].real(), src[complex_length_ - 1].real()); } WebRtc_rdft(length_, -1, dest, work_ip_.get(), work_w_.get()); @@ -82,4 +84,8 @@ void RealFourierOoura::Inverse(const complex<float>* src, float* dest) const { std::for_each(dest, dest + length_, [scale](float& v) { v *= scale; }); } +int RealFourierOoura::order() const { + return order_; +} + } // namespace webrtc |