73 lines
2.0 KiB
C++
Executable File
73 lines
2.0 KiB
C++
Executable File
//
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// The MIT License (MIT)
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//
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// Copyright (c) 2019 Livox. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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#ifndef COMM_COMM_PORT_H_
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#define COMM_COMM_PORT_H_
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#include <stdint.h>
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#include "protocol.h"
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namespace livox {
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const uint32_t kCacheSize = 8192;
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const uint32_t kMoveCacheLimit = 1536;
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typedef struct {
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uint8_t buf[kCacheSize];
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uint32_t rd_idx;
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uint32_t wr_idx;
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uint32_t size;
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} PortCache;
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class CommPort {
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public:
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CommPort();
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~CommPort();
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int32_t Pack(uint8_t *o_buf, uint32_t o_buf_size, uint32_t *o_len, const CommPacket &i_packet);
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int32_t ParseCommStream(CommPacket *o_pack);
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uint8_t *FetchCacheFreeSpace(uint32_t *o_len);
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int32_t UpdateCacheWrIdx(uint32_t used_size);
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uint16_t GetAndUpdateSeqNum();
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private:
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uint32_t GetCacheTailSize();
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uint32_t GetValidDataSize();
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void UpdateCache(void);
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PortCache cache_;
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Protocol *protocol_;
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uint32_t parse_step_;
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uint16_t seq_num_;
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};
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} // namespace livox
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#endif // COMM_COMM_PORT_H_
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