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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 |
| 11 #include "webrtc/common_audio/lapped_transform.h" | 11 #include "webrtc/common_audio/lapped_transform.h" |
| 12 | 12 |
| 13 #include <algorithm> | 13 #include <algorithm> |
| 14 #include <cstdlib> | 14 #include <cstdlib> |
| 15 #include <cstring> | 15 #include <cstring> |
| 16 | 16 |
| 17 #include "webrtc/base/checks.h" | 17 #include "webrtc/base/checks.h" |
| 18 #include "webrtc/common_audio/real_fourier.h" | 18 #include "webrtc/common_audio/real_fourier.h" |
| 19 | 19 |
| 20 namespace webrtc { | 20 namespace webrtc { |
| 21 | 21 |
| 22 void LappedTransform::BlockThunk::ProcessBlock(const float* const* input, | 22 void LappedTransform::BlockThunk::ProcessBlock(const float* const* input, |
| 23 size_t num_frames, | 23 size_t num_frames, |
| 24 int num_input_channels, | 24 int num_input_channels, |
| 25 int num_output_channels, | 25 int num_output_channels, |
| 26 float* const* output) { | 26 float* const* output) { |
| 27 CHECK_EQ(num_input_channels, parent_->num_in_channels_); | 27 RTC_CHECK_EQ(num_input_channels, parent_->num_in_channels_); |
| 28 CHECK_EQ(num_output_channels, parent_->num_out_channels_); | 28 RTC_CHECK_EQ(num_output_channels, parent_->num_out_channels_); |
| 29 CHECK_EQ(parent_->block_length_, num_frames); | 29 RTC_CHECK_EQ(parent_->block_length_, num_frames); |
| 30 | 30 |
| 31 for (int i = 0; i < num_input_channels; ++i) { | 31 for (int i = 0; i < num_input_channels; ++i) { |
| 32 memcpy(parent_->real_buf_.Row(i), input[i], | 32 memcpy(parent_->real_buf_.Row(i), input[i], |
| 33 num_frames * sizeof(*input[0])); | 33 num_frames * sizeof(*input[0])); |
| 34 parent_->fft_->Forward(parent_->real_buf_.Row(i), | 34 parent_->fft_->Forward(parent_->real_buf_.Row(i), |
| 35 parent_->cplx_pre_.Row(i)); | 35 parent_->cplx_pre_.Row(i)); |
| 36 } | 36 } |
| 37 | 37 |
| 38 size_t block_length = RealFourier::ComplexLength( | 38 size_t block_length = RealFourier::ComplexLength( |
| 39 RealFourier::FftOrder(num_frames)); | 39 RealFourier::FftOrder(num_frames)); |
| 40 CHECK_EQ(parent_->cplx_length_, block_length); | 40 RTC_CHECK_EQ(parent_->cplx_length_, block_length); |
| 41 parent_->block_processor_->ProcessAudioBlock(parent_->cplx_pre_.Array(), | 41 parent_->block_processor_->ProcessAudioBlock(parent_->cplx_pre_.Array(), |
| 42 num_input_channels, | 42 num_input_channels, |
| 43 parent_->cplx_length_, | 43 parent_->cplx_length_, |
| 44 num_output_channels, | 44 num_output_channels, |
| 45 parent_->cplx_post_.Array()); | 45 parent_->cplx_post_.Array()); |
| 46 | 46 |
| 47 for (int i = 0; i < num_output_channels; ++i) { | 47 for (int i = 0; i < num_output_channels; ++i) { |
| 48 parent_->fft_->Inverse(parent_->cplx_post_.Row(i), | 48 parent_->fft_->Inverse(parent_->cplx_post_.Row(i), |
| 49 parent_->real_buf_.Row(i)); | 49 parent_->real_buf_.Row(i)); |
| 50 memcpy(output[i], parent_->real_buf_.Row(i), | 50 memcpy(output[i], parent_->real_buf_.Row(i), |
| (...skipping 25 matching lines...) Expand all Loading... |
| 76 cplx_length_(RealFourier::ComplexLength(fft_->order())), | 76 cplx_length_(RealFourier::ComplexLength(fft_->order())), |
| 77 real_buf_(num_in_channels, | 77 real_buf_(num_in_channels, |
| 78 block_length_, | 78 block_length_, |
| 79 RealFourier::kFftBufferAlignment), | 79 RealFourier::kFftBufferAlignment), |
| 80 cplx_pre_(num_in_channels, | 80 cplx_pre_(num_in_channels, |
| 81 cplx_length_, | 81 cplx_length_, |
| 82 RealFourier::kFftBufferAlignment), | 82 RealFourier::kFftBufferAlignment), |
| 83 cplx_post_(num_out_channels, | 83 cplx_post_(num_out_channels, |
| 84 cplx_length_, | 84 cplx_length_, |
| 85 RealFourier::kFftBufferAlignment) { | 85 RealFourier::kFftBufferAlignment) { |
| 86 CHECK(num_in_channels_ > 0 && num_out_channels_ > 0); | 86 RTC_CHECK(num_in_channels_ > 0 && num_out_channels_ > 0); |
| 87 CHECK_GT(block_length_, 0u); | 87 RTC_CHECK_GT(block_length_, 0u); |
| 88 CHECK_GT(chunk_length_, 0u); | 88 RTC_CHECK_GT(chunk_length_, 0u); |
| 89 CHECK(block_processor_); | 89 RTC_CHECK(block_processor_); |
| 90 | 90 |
| 91 // block_length_ power of 2? | 91 // block_length_ power of 2? |
| 92 CHECK_EQ(0u, block_length_ & (block_length_ - 1)); | 92 RTC_CHECK_EQ(0u, block_length_ & (block_length_ - 1)); |
| 93 } | 93 } |
| 94 | 94 |
| 95 void LappedTransform::ProcessChunk(const float* const* in_chunk, | 95 void LappedTransform::ProcessChunk(const float* const* in_chunk, |
| 96 float* const* out_chunk) { | 96 float* const* out_chunk) { |
| 97 blocker_.ProcessChunk(in_chunk, chunk_length_, num_in_channels_, | 97 blocker_.ProcessChunk(in_chunk, chunk_length_, num_in_channels_, |
| 98 num_out_channels_, out_chunk); | 98 num_out_channels_, out_chunk); |
| 99 } | 99 } |
| 100 | 100 |
| 101 } // namespace webrtc | 101 } // namespace webrtc |
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