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initial commit 2019-09-07 14:03:22 +04:00 • committed by vvaltman
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/*
This file is part of TON Blockchain Library.
TON Blockchain Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
TON Blockchain Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
Copyright 2017-2019 Telegram Systems LLP
*/
#include "fec.h"
#include "td/utils/overloaded.h"
#include "auto/tl/ton_api.hpp"
namespace ton {
namespace fec {
tl_object_ptr<ton_api::fec_Type> FecType::tl() const {
tl_object_ptr<ton_api::fec_Type> res;
type_.visit(td::overloaded([&](const Empty &obj) { UNREACHABLE(); },
[&](const td::fec::RaptorQEncoder::Parameters &obj) {
res = create_tl_object<ton_api::fec_raptorQ>(static_cast<td::uint32>(obj.data_size),
static_cast<td::uint32>(obj.symbol_size),
static_cast<td::uint32>(obj.symbols_count));
},
[&](const td::fec::RoundRobinEncoder::Parameters &obj) {
res = create_tl_object<ton_api::fec_roundRobin>(
static_cast<td::uint32>(obj.data_size), static_cast<td::uint32>(obj.symbol_size),
static_cast<td::uint32>(obj.symbols_count));
},
[&](const td::fec::OnlineEncoder::Parameters &obj) {
res = create_tl_object<ton_api::fec_online>(static_cast<td::uint32>(obj.data_size),
static_cast<td::uint32>(obj.symbol_size),
static_cast<td::uint32>(obj.symbols_count));
}));
return res;
}
td::Result<std::unique_ptr<td::fec::Decoder>> FecType::create_decoder() const {
std::unique_ptr<td::fec::Decoder> res;
type_.visit(td::overloaded(
[&](const Empty &obj) { UNREACHABLE(); },
[&](const td::fec::RaptorQEncoder::Parameters &obj) { res = td::fec::RaptorQDecoder::create(obj); },
[&](const td::fec::RoundRobinEncoder::Parameters &obj) { res = td::fec::RoundRobinDecoder::create(obj); },
[&](const td::fec::OnlineEncoder::Parameters &obj) { res = td::fec::OnlineDecoder::create(obj); }));
return std::move(res);
}
td::Result<std::unique_ptr<td::fec::Encoder>> FecType::create_encoder(td::BufferSlice data) {
std::unique_ptr<td::fec::Encoder> res;
type_.visit(td::overloaded([&](const Empty &obj) { UNREACHABLE(); },
[&](const td::fec::RaptorQEncoder::Parameters &obj) {
auto R = td::fec::RaptorQEncoder::create(std::move(data), obj.symbol_size);
type_ = R->get_parameters();
res = std::move(R);
},
[&](const td::fec::RoundRobinEncoder::Parameters &obj) {
auto R = td::fec::RoundRobinEncoder::create(std::move(data), obj.symbol_size);
type_ = R->get_parameters();
res = std::move(R);
},
[&](const td::fec::OnlineEncoder::Parameters &obj) {
auto R = td::fec::OnlineEncoder::create(std::move(data), obj.symbol_size);
type_ = R->get_parameters();
res = std::move(R);
}));
return std::move(res);
}
td::uint32 FecType::size() const {
td::uint32 res = 0;
type_.visit(td::overloaded([&](const Empty &obj) { UNREACHABLE(); },
[&](const auto &obj) { res = static_cast<td::uint32>(obj.data_size); }));
return res;
}
td::uint32 FecType::symbols_count() const {
td::uint32 res = 0;
type_.visit(td::overloaded([&](const Empty &obj) { UNREACHABLE(); },
[&](const auto &obj) { res = static_cast<td::uint32>(obj.symbols_count); }));
return res;
}
td::uint32 FecType::symbol_size() const {
td::uint32 res = 0;
type_.visit(td::overloaded([&](const Empty &obj) { UNREACHABLE(); },
[&](const auto &obj) { res = static_cast<td::uint32>(obj.symbol_size); }));
return res;
}
td::Result<FecType> FecType::create(tl_object_ptr<ton_api::fec_Type> obj) {
FecType T;
ton_api::downcast_call(
*obj.get(), td::overloaded(
[&](const ton_api::fec_raptorQ &obj) {
T.type_ = td::fec::RaptorQEncoder::Parameters{static_cast<size_t>(obj.data_size_),
static_cast<size_t>(obj.symbol_size_),
static_cast<size_t>(obj.symbols_count_)};
},
[&](const ton_api::fec_roundRobin &obj) {
T.type_ = td::fec::RoundRobinEncoder::Parameters{static_cast<size_t>(obj.data_size_),
static_cast<size_t>(obj.symbol_size_),
static_cast<size_t>(obj.symbols_count_)};
},
[&](const ton_api::fec_online &obj) {
T.type_ = td::fec::OnlineEncoder::Parameters{static_cast<size_t>(obj.data_size_),
static_cast<size_t>(obj.symbol_size_),
static_cast<size_t>(obj.symbols_count_)};
}));
return T;
}
} // namespace fec
} // namespace ton