b7e5054414
This makes a variety of small changes to synchronize bits of code using different types, remove useless code or casts, and add explicit casts in some places previously doing implicit ones. For example: * Change a few type declarations to better match how the majority of code uses those objects. * Eliminate "< 0" check for unsigned values. * Replace "(float)sin(x)", where |x| is also a float, with "sinf(x)", and similar. * Add casts to uint32_t in many places timestamps were used and the existing code stored signed values into the unsigned objects. * Remove downcasts when the results would be passed to a larger type, e.g. calling "foo((int16_t)x)" with an int |x| when foo() takes an int instead of an int16_t. * Similarly, add casts when passing a larger type to a function taking a smaller one. * Add casts to int16_t when doing something like "int16_t = int16_t + int16_t" as the "+" operation would implicitly upconvert to int, and similar. * Use "false" instead of "0" for setting a bool. * Shift a few temp types when doing a multi-stage calculation involving typecasts, so as to put the most logical/semantically correct type possible into the temps. For example, when doing "int foo = int + int; size_t bar = (size_t)foo + size_t;", we might change |foo| to a size_t and move the cast if it makes more sense for |foo| to be represented as a size_t. BUG=none R=andrew@webrtc.org, asapersson@webrtc.org, henrika@webrtc.org, juberti@webrtc.org, kwiberg@webrtc.org TBR=andrew, asapersson, henrika Review URL: https://codereview.webrtc.org/1168753002 Cr-Commit-Position: refs/heads/master@{#9419}
58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
/*
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* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/common_audio/real_fourier.h"
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#include "webrtc/base/checks.h"
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#include "webrtc/common_audio/real_fourier_ooura.h"
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#include "webrtc/common_audio/real_fourier_openmax.h"
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#include "webrtc/common_audio/signal_processing/include/spl_inl.h"
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namespace webrtc {
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using std::complex;
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const int RealFourier::kFftBufferAlignment = 32;
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rtc::scoped_ptr<RealFourier> RealFourier::Create(int fft_order) {
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#if defined(RTC_USE_OPENMAX_DL)
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return rtc::scoped_ptr<RealFourier>(new RealFourierOpenmax(fft_order));
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#else
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return rtc::scoped_ptr<RealFourier>(new RealFourierOoura(fft_order));
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#endif
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}
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int RealFourier::FftOrder(int length) {
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CHECK_GT(length, 0);
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return WebRtcSpl_GetSizeInBits(static_cast<uint32_t>(length - 1));
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}
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int RealFourier::FftLength(int order) {
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CHECK_GE(order, 0);
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return 1 << order;
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}
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int RealFourier::ComplexLength(int order) {
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return FftLength(order) / 2 + 1;
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}
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RealFourier::fft_real_scoper RealFourier::AllocRealBuffer(int count) {
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return fft_real_scoper(static_cast<float*>(
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AlignedMalloc(sizeof(float) * count, kFftBufferAlignment)));
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}
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RealFourier::fft_cplx_scoper RealFourier::AllocCplxBuffer(int count) {
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return fft_cplx_scoper(static_cast<complex<float>*>(
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AlignedMalloc(sizeof(complex<float>) * count, kFftBufferAlignment)));
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}
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} // namespace webrtc
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