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tdfec/test/LibRaptorQ.h

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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
+*/
+#pragma once
+
+#include "td/utils/buffer.h"
+#include "td/fec/fec.h"
+
+namespace td {
+namespace fec {
+
+class SlowRaptorQEncoder : public Encoder {
+ public:
+  ~SlowRaptorQEncoder();
+  static std::unique_ptr<SlowRaptorQEncoder> create(BufferSlice data, size_t max_symbol_size);
+
+  Symbol gen_symbol(uint32 id) override;
+  Info get_info() const override;
+  void prepare_more_symbols() override;
+
+  struct Parameters {
+    size_t symbols_count;
+    size_t symbol_size;
+    size_t data_size;
+  };
+  SlowRaptorQEncoder(BufferSlice data, size_t max_symbol_size);
+
+  Parameters get_parameters() const;
+
+ private:
+  class Impl;
+  std::unique_ptr<Impl> impl_;
+};
+
+class SlowRaptorQDecoder : public Decoder {
+ public:
+  ~SlowRaptorQDecoder();
+  static std::unique_ptr<SlowRaptorQDecoder> create(SlowRaptorQEncoder::Parameters parameters);
+
+  bool may_try_decode() const override;
+  Result<DataWithEncoder> try_decode(bool need_encoder) override;
+
+  void add_symbol(Symbol symbol) override;
+
+  SlowRaptorQDecoder(SlowRaptorQEncoder::Parameters parameters);
+
+ private:
+  class Impl;
+  std::unique_ptr<Impl> impl_;
+};
+
+}  // namespace fec
+}  // namespace td