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/*
* Copyright (c) 2022 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 "test/pc/e2e/analyzer/video/names_collection.h"
#include <set>
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
namespace webrtc {
NamesCollection::NamesCollection(rtc::ArrayView<const std::string> names) {
names_ = std::vector<std::string>(names.begin(), names.end());
for (size_t i = 0; i < names_.size(); ++i) {
index_.emplace(names_[i], i);
removed_.emplace_back(false);
}
size_ = names_.size();
}
bool NamesCollection::HasName(absl::string_view name) const {
auto it = index_.find(name);
if (it == index_.end()) {
return false;
}
return !removed_[it->second];
}
size_t NamesCollection::AddIfAbsent(absl::string_view name) {
auto it = index_.find(name);
if (it != index_.end()) {
// Name was registered in the collection before: we need to restore it.
size_t index = it->second;
if (removed_[index]) {
removed_[index] = false;
size_++;
}
return index;
}
size_t out = names_.size();
size_t old_capacity = names_.capacity();
names_.emplace_back(name);
removed_.emplace_back(false);
size_++;
size_t new_capacity = names_.capacity();
if (old_capacity == new_capacity) {
index_.emplace(names_[out], out);
} else {
// Reallocation happened in the vector, so we need to rebuild `index_` to
// fix absl::string_view internal references.
index_.clear();
for (size_t i = 0; i < names_.size(); ++i) {
index_.emplace(names_[i], i);
}
}
return out;
}
absl::optional<size_t> NamesCollection::RemoveIfPresent(
absl::string_view name) {
auto it = index_.find(name);
if (it == index_.end()) {
return absl::nullopt;
}
size_t index = it->second;
if (removed_[index]) {
return absl::nullopt;
}
removed_[index] = true;
size_--;
return index;
}
std::set<size_t> NamesCollection::GetPresentIndexes() const {
std::set<size_t> out;
for (size_t i = 0; i < removed_.size(); ++i) {
if (!removed_[i]) {
out.insert(i);
}
}
return out;
}
std::set<size_t> NamesCollection::GetAllIndexes() const {
std::set<size_t> out;
for (size_t i = 0; i < names_.size(); ++i) {
out.insert(i);
}
return out;
}
} // namespace webrtc
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