1 // Copyright 2019 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CAST_COMMON_CHANNEL_MESSAGE_FRAMER_H_ 6 #define CAST_COMMON_CHANNEL_MESSAGE_FRAMER_H_ 7 8 #include <stddef.h> 9 #include <stdint.h> 10 11 #include <memory> 12 #include <vector> 13 14 #include "absl/types/span.h" 15 #include "cast/common/channel/proto/cast_channel.pb.h" 16 #include "platform/base/error.h" 17 18 namespace openscreen { 19 namespace cast { 20 namespace message_serialization { 21 22 // Serializes |message_proto| into |message_data|. 23 // Returns true if the message was serialized successfully, false otherwise. 24 ErrorOr<std::vector<uint8_t>> Serialize( 25 const ::cast::channel::CastMessage& message); 26 27 struct DeserializeResult { 28 ::cast::channel::CastMessage message; 29 size_t length; 30 }; 31 32 // Reads bytes from |input| and returns a new CastMessage if one is fully 33 // read. Returns a parsed CastMessage if a message was received in its 34 // entirety, and an error otherwise. The result also contains the number of 35 // bytes consumed from |input| when a parse succeeds. 36 ErrorOr<DeserializeResult> TryDeserialize(absl::Span<const uint8_t> input); 37 38 } // namespace message_serialization 39 } // namespace cast 40 } // namespace openscreen 41 42 #endif // CAST_COMMON_CHANNEL_MESSAGE_FRAMER_H_ 43