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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.
#include <vector>
#include "webrtc/api/array_view.h"
#include "webrtc/modules/audio_processing/aec3/aec3_common.h"
#include "webrtc/rtc_base/constructormagic.h"
namespace webrtc {
// Class for producing frames consisting of 1 or 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 {
explicit BlockFramer(size_t num_bands);
// Adds a 64 sample block into the data that will form the next output frame.
void InsertBlock(const std::vector<std::vector<float>>& block);
// Adds a 64 sample block and extracts an 80 sample subframe.
void InsertBlockAndExtractSubFrame(
const std::vector<std::vector<float>>& block,
std::vector<rtc::ArrayView<float>>* sub_frame);
const size_t num_bands_;
std::vector<std::vector<float>> buffer_;
} // namespace webrtc