tdesktop/Telegram/SourceFiles/media/streaming/media_streaming_loader.cpp

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "media/streaming/media_streaming_loader.h"
namespace Media {
namespace Streaming {
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bool LoadedPart::valid(int64 size) const {
return (offset != kFailedOffset)
&& ((bytes.size() == Loader::kPartSize)
|| (offset + bytes.size() == size));
}
bool operator<(
const PriorityQueue::Entry &a,
const PriorityQueue::Entry &b) {
if (a.priority > b.priority) {
return true;
} else if (a.priority < b.priority) {
return false;
} else {
return a.value < b.value;
}
}
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bool PriorityQueue::add(int64 value) {
const auto i = ranges::find(_data, value, &Entry::value);
if (i == end(_data)) {
_data.insert({ value, _priority });
return true;
} else if (i->priority != _priority) {
_data.erase(i);
_data.insert({ value, _priority });
return true;
}
return false;
}
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bool PriorityQueue::remove(int64 value) {
const auto i = ranges::find(_data, value, &Entry::value);
if (i == end(_data)) {
return false;
}
_data.erase(i);
return true;
}
bool PriorityQueue::empty() const {
return _data.empty();
}
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std::optional<int64> PriorityQueue::front() const {
return _data.empty()
? std::nullopt
: std::make_optional(_data.front().value);
}
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std::optional<int64> PriorityQueue::take() {
if (_data.empty()) {
return std::nullopt;
}
const auto result = _data.front().value;
_data.erase(_data.begin());
return result;
}
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base::flat_set<int64> PriorityQueue::takeInRange(int64 from, int64 till) {
auto result = base::flat_set<int64>();
for (auto i = _data.begin(); i != _data.end();) {
if (i->value >= from && i->value < till) {
result.emplace(i->value);
i = _data.erase(i);
} else {
++i;
}
}
return result;
}
void PriorityQueue::clear() {
_data.clear();
}
void PriorityQueue::resetPriorities() {
++_priority;
}
} // namespace Streaming
} // namespace Media