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- /*
- * Copyright (c) 2016 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_AEC3_FRAME_BLOCKER_H_
- #define MODULES_AUDIO_PROCESSING_AEC3_FRAME_BLOCKER_H_
- #include <stddef.h>
- #include <vector>
- #include "api/array_view.h"
- #include "modules/audio_processing/aec3/aec3_common.h"
- namespace webrtc {
- // Class for producing 64 sample multiband blocks from frames consisting of 2
- // subframes of 80 samples.
- class FrameBlocker {
- public:
- FrameBlocker(size_t num_bands, size_t num_channels);
- ~FrameBlocker();
- FrameBlocker(const FrameBlocker&) = delete;
- FrameBlocker& operator=(const FrameBlocker&) = delete;
- // Inserts one 80 sample multiband subframe from the multiband frame and
- // extracts one 64 sample multiband block.
- void InsertSubFrameAndExtractBlock(
- const std::vector<std::vector<rtc::ArrayView<float>>>& sub_frame,
- std::vector<std::vector<std::vector<float>>>* block);
- // Reports whether a multiband block of 64 samples is available for
- // extraction.
- bool IsBlockAvailable() const;
- // Extracts a multiband block of 64 samples.
- void ExtractBlock(std::vector<std::vector<std::vector<float>>>* block);
- private:
- const size_t num_bands_;
- const size_t num_channels_;
- std::vector<std::vector<std::vector<float>>> buffer_;
- };
- } // namespace webrtc
- #endif // MODULES_AUDIO_PROCESSING_AEC3_FRAME_BLOCKER_H_
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