| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef FLUTTER_SHELL_PLATFORM_COMMON_CPP_CLIENT_WRAPPER_INCLUDE_FLUTTER_STANDARD_MESSAGE_CODEC_H_ |
| #define FLUTTER_SHELL_PLATFORM_COMMON_CPP_CLIENT_WRAPPER_INCLUDE_FLUTTER_STANDARD_MESSAGE_CODEC_H_ |
| |
| #include <memory> |
| |
| #include "encodable_value.h" |
| #include "message_codec.h" |
| #include "standard_codec_serializer.h" |
| |
| namespace flutter { |
| |
| // A binary message encoding/decoding mechanism for communications to/from the |
| // Flutter engine via message channels. |
| class StandardMessageCodec : public MessageCodec<EncodableValue> { |
| public: |
| // Returns an instance of the codec, optionally using a custom serializer to |
| // add support for more types. |
| // |
| // If provided, |serializer| must be long-lived. If no serializer is provided, |
| // the default will be used. |
| // |
| // The instance returned for a given |serializer| will be shared, and |
| // any instance returned from this will be long-lived, and can be safely |
| // passed to, e.g., channel constructors. |
| static const StandardMessageCodec& GetInstance( |
| const StandardCodecSerializer* serializer = nullptr); |
| |
| ~StandardMessageCodec(); |
| |
| // Prevent copying. |
| StandardMessageCodec(StandardMessageCodec const&) = delete; |
| StandardMessageCodec& operator=(StandardMessageCodec const&) = delete; |
| |
| protected: |
| // |flutter::MessageCodec| |
| std::unique_ptr<EncodableValue> DecodeMessageInternal( |
| const uint8_t* binary_message, |
| const size_t message_size) const override; |
| |
| // |flutter::MessageCodec| |
| std::unique_ptr<std::vector<uint8_t>> EncodeMessageInternal( |
| const EncodableValue& message) const override; |
| |
| private: |
| // Instances should be obtained via GetInstance. |
| explicit StandardMessageCodec(const StandardCodecSerializer* serializer); |
| |
| const StandardCodecSerializer* serializer_; |
| }; |
| |
| } // namespace flutter |
| |
| #endif // FLUTTER_SHELL_PLATFORM_COMMON_CPP_CLIENT_WRAPPER_INCLUDE_FLUTTER_STANDARD_MESSAGE_CODEC_H_ |