move stream to kernel module

trunk/src/kernel/srs_kernel_stream.hpp

@@ -0,0 +1,130 @@
+/*
+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_STREAM_HPP
+#define SRS_KERNEL_STREAM_HPP
+
+/*
+#include <srs_kernel_stream.hpp>
+*/
+
+#include <srs_core.hpp>
+
+#include <sys/types.h>
+#include <string>
+
+class SrsStream
+{
+private:
+	char* p;
+	char* pp;
+	char* bytes;
+	int size;
+public:
+	SrsStream();
+	virtual ~SrsStream();
+public:
+	/**
+	* initialize the stream from bytes.
+	* @_bytes, must not be NULL, or return error.
+	* @_size, must be positive, or return error.
+	* @remark, stream never free the _bytes, user must free it.
+	*/
+	virtual int initialize(char* _bytes, int _size);
+	/**
+	* reset the position to beginning.
+	*/
+	virtual void reset();
+	/**
+	* whether stream is empty.
+	* if empty, never read or write.
+	*/
+	virtual bool empty();
+	/**
+	* whether required size is ok.
+	* @return true if stream can read/write specified required_size bytes.
+	*/
+	virtual bool require(int required_size);
+	/**
+	* to skip some size.
+	* @size can be any value. positive to forward; nagetive to backward.
+	*/
+	virtual void skip(int size);
+	/**
+	* tell the current pos.
+	*/
+	virtual int pos();
+	/**
+	* left size of bytes.
+	*/
+	virtual int left();
+	virtual char* current();
+public:
+	/**
+	* get 1bytes char from stream.
+	*/
+	virtual int8_t read_1bytes();
+	/**
+	* get 2bytes int from stream.
+	*/
+	virtual int16_t read_2bytes();
+	/**
+	* get 3bytes int from stream.
+	*/
+	virtual int32_t read_3bytes();
+	/**
+	* get 4bytes int from stream.
+	*/
+	virtual int32_t read_4bytes();
+	/**
+	* get 8bytes int from stream.
+	*/
+	virtual int64_t read_8bytes();
+	/**
+	* get string from stream, length specifies by param len.
+	*/
+	virtual std::string read_string(int len);
+public:
+	/**
+	* write 1bytes char to stream.
+	*/
+	virtual void write_1bytes(int8_t value);
+	/**
+	* write 2bytes int to stream.
+	*/
+	virtual void write_2bytes(int16_t value);
+	/**
+	* write 4bytes int to stream.
+	*/
+	virtual void write_4bytes(int32_t value);
+	/**
+	* write 8bytes int to stream.
+	*/
+	virtual void write_8bytes(int64_t value);
+	/**
+	* write string to stream
+	*/
+	virtual void write_string(std::string value);
+};
+
+#endif