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Side by Side Diff: webrtc/common_audio/real_fourier.cc

Issue 1174813003: Prepare to convert various types to size_t. (Closed) Base URL: https://chromium.googlesource.com/external/webrtc@master
Patch Set: Review comments + resync Created 5 years, 6 months ago
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1 /* 1 /*
2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license 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 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 6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may 7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree. 8 * be found in the AUTHORS file in the root of the source tree.
9 */ 9 */
10 10
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33 CHECK_GT(length, 0); 33 CHECK_GT(length, 0);
34 return WebRtcSpl_GetSizeInBits(length - 1); 34 return WebRtcSpl_GetSizeInBits(length - 1);
35 } 35 }
36 36
37 int RealFourier::FftLength(int order) { 37 int RealFourier::FftLength(int order) {
38 CHECK_GE(order, 0); 38 CHECK_GE(order, 0);
39 return 1 << order; 39 return 1 << order;
40 } 40 }
41 41
42 int RealFourier::ComplexLength(int order) { 42 int RealFourier::ComplexLength(int order) {
43 CHECK_GE(order, 0); 43 return FftLength(order) / 2 + 1;
44 return (1 << order) / 2 + 1;
45 } 44 }
46 45
47 RealFourier::fft_real_scoper RealFourier::AllocRealBuffer(int count) { 46 RealFourier::fft_real_scoper RealFourier::AllocRealBuffer(int count) {
48 return fft_real_scoper(static_cast<float*>( 47 return fft_real_scoper(static_cast<float*>(
49 AlignedMalloc(sizeof(float) * count, kFftBufferAlignment))); 48 AlignedMalloc(sizeof(float) * count, kFftBufferAlignment)));
50 } 49 }
51 50
52 RealFourier::fft_cplx_scoper RealFourier::AllocCplxBuffer(int count) { 51 RealFourier::fft_cplx_scoper RealFourier::AllocCplxBuffer(int count) {
53 return fft_cplx_scoper(static_cast<complex<float>*>( 52 return fft_cplx_scoper(static_cast<complex<float>*>(
54 AlignedMalloc(sizeof(complex<float>) * count, kFftBufferAlignment))); 53 AlignedMalloc(sizeof(complex<float>) * count, kFftBufferAlignment)));
55 } 54 }
56 55
57 } // namespace webrtc 56 } // namespace webrtc
58 57
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