move buffer to kernel. extract ISrsReader for buffer

trunk/src/kernel/srs_kernel_buffer.hpp

@@ -0,0 +1,66 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013-2014 winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef SRS_KERNEL_BUFFER_HPP
+#define SRS_KERNEL_BUFFER_HPP
+
+/*
+#include <srs_kernel_buffer.hpp>
+*/
+
+#include <srs_core.hpp>
+
+#include <vector>
+
+class ISrsReader
+{
+public:
+	ISrsReader();
+	virtual ~ISrsReader();
+public:
+    virtual int read(const void* buf, size_t size, ssize_t* nread) = 0;
+};
+
+/**
+* the buffer provices bytes cache for protocol. generally, 
+* protocol recv data from socket, put into buffer, decode to RTMP message.
+* protocol encode RTMP message to bytes, put into buffer, send to socket.
+*/
+class SrsBuffer
+{
+private:
+	std::vector<char> data;
+public:
+	SrsBuffer();
+	virtual ~SrsBuffer();
+public:
+	virtual int size();
+	virtual char* bytes();
+	virtual void erase(int size);
+private:
+	virtual void append(char* bytes, int size);
+public:
+	virtual int ensure_buffer_bytes(ISrsReader* skt, int required_size);
+};
+
+#endif