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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/modules/audio_processing/utility/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 size_t num_input_channels, | 24 size_t num_input_channels, |
| 25 size_t num_output_channels, | 25 size_t num_output_channels, |
| 26 float* const* output) { | 26 float* const* output) { |
| 27 RTC_CHECK_EQ(num_input_channels, parent_->num_in_channels_); | 27 RTC_CHECK_EQ(num_input_channels, parent_->num_in_channels_); |
| 28 RTC_CHECK_EQ(num_output_channels, parent_->num_out_channels_); | 28 RTC_CHECK_EQ(num_output_channels, parent_->num_out_channels_); |
| 29 RTC_CHECK_EQ(parent_->block_length_, num_frames); | 29 RTC_CHECK_EQ(parent_->block_length_, num_frames); |
| 30 | 30 |
| 31 for (size_t i = 0; i < num_input_channels; ++i) { | 31 for (size_t 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], num_frames * sizeof(*input[0])); |
| 33 num_frames * sizeof(*input[0])); | |
| 34 parent_->fft_->Forward(parent_->real_buf_.Row(i), | 33 parent_->fft_->Forward(parent_->real_buf_.Row(i), |
| 35 parent_->cplx_pre_.Row(i)); | 34 parent_->cplx_pre_.Row(i)); |
| 36 } | 35 } |
| 37 | 36 |
| 38 size_t block_length = RealFourier::ComplexLength( | 37 size_t block_length = |
| 39 RealFourier::FftOrder(num_frames)); | 38 RealFourier::ComplexLength(RealFourier::FftOrder(num_frames)); |
| 40 RTC_CHECK_EQ(parent_->cplx_length_, block_length); | 39 RTC_CHECK_EQ(parent_->cplx_length_, block_length); |
| 41 parent_->block_processor_->ProcessAudioBlock(parent_->cplx_pre_.Array(), | 40 parent_->block_processor_->ProcessAudioBlock( |
| 42 num_input_channels, | 41 parent_->cplx_pre_.Array(), num_input_channels, parent_->cplx_length_, |
| 43 parent_->cplx_length_, | 42 num_output_channels, parent_->cplx_post_.Array()); |
| 44 num_output_channels, | |
| 45 parent_->cplx_post_.Array()); | |
| 46 | 43 |
| 47 for (size_t i = 0; i < num_output_channels; ++i) { | 44 for (size_t i = 0; i < num_output_channels; ++i) { |
| 48 parent_->fft_->Inverse(parent_->cplx_post_.Row(i), | 45 parent_->fft_->Inverse(parent_->cplx_post_.Row(i), |
| 49 parent_->real_buf_.Row(i)); | 46 parent_->real_buf_.Row(i)); |
| 50 memcpy(output[i], parent_->real_buf_.Row(i), | 47 memcpy(output[i], parent_->real_buf_.Row(i), |
| 51 num_frames * sizeof(*input[0])); | 48 num_frames * sizeof(*input[0])); |
| 52 } | 49 } |
| 53 } | 50 } |
| 54 | 51 |
| 55 LappedTransform::LappedTransform(size_t num_in_channels, | 52 LappedTransform::LappedTransform(size_t num_in_channels, |
| (...skipping 37 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 93 RTC_CHECK_EQ(0u, block_length_ & (block_length_ - 1)); | 90 RTC_CHECK_EQ(0u, block_length_ & (block_length_ - 1)); |
| 94 } | 91 } |
| 95 | 92 |
| 96 void LappedTransform::ProcessChunk(const float* const* in_chunk, | 93 void LappedTransform::ProcessChunk(const float* const* in_chunk, |
| 97 float* const* out_chunk) { | 94 float* const* out_chunk) { |
| 98 blocker_.ProcessChunk(in_chunk, chunk_length_, num_in_channels_, | 95 blocker_.ProcessChunk(in_chunk, chunk_length_, num_in_channels_, |
| 99 num_out_channels_, out_chunk); | 96 num_out_channels_, out_chunk); |
| 100 } | 97 } |
| 101 | 98 |
| 102 } // namespace webrtc | 99 } // namespace webrtc |
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