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Diffstat (limited to 'third_party/libwebrtc/modules/audio_processing/aec3/block_framer.h')
-rw-r--r-- | third_party/libwebrtc/modules/audio_processing/aec3/block_framer.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_processing/aec3/block_framer.h b/third_party/libwebrtc/modules/audio_processing/aec3/block_framer.h new file mode 100644 index 0000000000..e2cdd5a17c --- /dev/null +++ b/third_party/libwebrtc/modules/audio_processing/aec3/block_framer.h @@ -0,0 +1,49 @@ +/* + * 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_BLOCK_FRAMER_H_ +#define MODULES_AUDIO_PROCESSING_AEC3_BLOCK_FRAMER_H_ + +#include <vector> + +#include "api/array_view.h" +#include "modules/audio_processing/aec3/aec3_common.h" +#include "modules/audio_processing/aec3/block.h" + +namespace webrtc { + +// Class for producing frames consisting of 2 subframes of 80 samples each +// from 64 sample blocks. The class is designed to work together with the +// FrameBlocker class which performs the reverse conversion. Used together with +// that, this class produces output frames are the same rate as frames are +// received by the FrameBlocker class. Note that the internal buffers will +// overrun if any other rate of packets insertion is used. +class BlockFramer { + public: + BlockFramer(size_t num_bands, size_t num_channels); + ~BlockFramer(); + BlockFramer(const BlockFramer&) = delete; + BlockFramer& operator=(const BlockFramer&) = delete; + + // Adds a 64 sample block into the data that will form the next output frame. + void InsertBlock(const Block& block); + // Adds a 64 sample block and extracts an 80 sample subframe. + void InsertBlockAndExtractSubFrame( + const Block& block, + std::vector<std::vector<rtc::ArrayView<float>>>* sub_frame); + + 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_BLOCK_FRAMER_H_ |