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Diffstat (limited to 'third_party/libwebrtc/modules/audio_processing/transient/wpd_node.h')
-rw-r--r-- | third_party/libwebrtc/modules/audio_processing/transient/wpd_node.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_processing/transient/wpd_node.h b/third_party/libwebrtc/modules/audio_processing/transient/wpd_node.h new file mode 100644 index 0000000000..41614fab0f --- /dev/null +++ b/third_party/libwebrtc/modules/audio_processing/transient/wpd_node.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef MODULES_AUDIO_PROCESSING_TRANSIENT_WPD_NODE_H_ +#define MODULES_AUDIO_PROCESSING_TRANSIENT_WPD_NODE_H_ + +#include <memory> + +namespace webrtc { + +class FIRFilter; + +// A single node of a Wavelet Packet Decomposition (WPD) tree. +class WPDNode { + public: + // Creates a WPDNode. The data vector will contain zeros. The filter will have + // the coefficients provided. + WPDNode(size_t length, const float* coefficients, size_t coefficients_length); + ~WPDNode(); + + // Updates the node data. `parent_data` / 2 must be equals to `length_`. + // Returns 0 if correct, and -1 otherwise. + int Update(const float* parent_data, size_t parent_data_length); + + const float* data() const { return data_.get(); } + // Returns 0 if correct, and -1 otherwise. + int set_data(const float* new_data, size_t length); + size_t length() const { return length_; } + + private: + std::unique_ptr<float[]> data_; + size_t length_; + std::unique_ptr<FIRFilter> filter_; +}; + +} // namespace webrtc + +#endif // MODULES_AUDIO_PROCESSING_TRANSIENT_WPD_NODE_H_ |