diff options
Diffstat (limited to 'webrtc/modules/audio_processing/aec3/frame_blocker.h')
-rw-r--r-- | webrtc/modules/audio_processing/aec3/frame_blocker.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/webrtc/modules/audio_processing/aec3/frame_blocker.h b/webrtc/modules/audio_processing/aec3/frame_blocker.h new file mode 100644 index 0000000..ebd6f77 --- /dev/null +++ b/webrtc/modules/audio_processing/aec3/frame_blocker.h @@ -0,0 +1,50 @@ +/* + * 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_ |