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61bc0d1ed3
to convert flags which chains a video frame part of into chain_diffs Bug: webrtc:10342 Change-Id: I6fb899eae934078223b101c9f85e2ac101980d4c Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/175108 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Philip Eliasson <philipel@webrtc.org> Cr-Commit-Position: refs/heads/master@{#31306}
62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
/*
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* Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/video_coding/chain_diff_calculator.h"
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#include <stddef.h>
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#include <stdint.h>
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#include <algorithm>
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#include <vector>
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#include "absl/container/inlined_vector.h"
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#include "absl/types/optional.h"
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#include "rtc_base/logging.h"
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namespace webrtc {
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void ChainDiffCalculator::Reset(const std::vector<bool>& chains) {
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last_frame_in_chain_.resize(chains.size());
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for (size_t i = 0; i < chains.size(); ++i) {
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if (chains[i]) {
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last_frame_in_chain_[i] = absl::nullopt;
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}
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}
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}
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absl::InlinedVector<int, 4> ChainDiffCalculator::ChainDiffs(
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int64_t frame_id) const {
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absl::InlinedVector<int, 4> result;
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result.reserve(last_frame_in_chain_.size());
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for (const auto& frame_id_in_chain : last_frame_in_chain_) {
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result.push_back(frame_id_in_chain ? (frame_id - *frame_id_in_chain) : 0);
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}
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return result;
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}
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absl::InlinedVector<int, 4> ChainDiffCalculator::From(
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int64_t frame_id,
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const std::vector<bool>& chains) {
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auto result = ChainDiffs(frame_id);
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if (chains.size() != last_frame_in_chain_.size()) {
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RTC_LOG(LS_ERROR) << "Insconsistent chain configuration for frame#"
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<< frame_id << ": expected "
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<< last_frame_in_chain_.size() << " chains, found "
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<< chains.size();
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}
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size_t num_chains = std::min(last_frame_in_chain_.size(), chains.size());
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for (size_t i = 0; i < num_chains; ++i) {
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if (chains[i]) {
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last_frame_in_chain_[i] = frame_id;
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}
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}
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return result;
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}
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} // namespace webrtc
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