refine http/dvr/hls to use file reader/writer. 0.9.146

trunk/src/kernel/srs_kernel_file.hpp

@@ -0,0 +1,93 @@
+/*
+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_FILE_HPP
+#define SRS_KERNEL_FILE_HPP
+
+/*
+#include <srs_kernel_file.hpp>
+*/
+#include <srs_core.hpp>
+
+#include <string>
+
+/**
+* file writer, to write to file.
+*/
+class SrsFileWriter
+{
+private:
+    std::string _file;
+    int fd;
+public:
+    SrsFileWriter();
+    virtual ~SrsFileWriter();
+public:
+    /**
+    * open file writer, can open then close then open...
+    */
+    virtual int open(std::string file);
+    virtual void close();
+public:
+    virtual bool is_open();
+    virtual int64_t tellg();
+public:
+    /**
+    * write to file. 
+    * @param pnwrite the output nb_write, NULL to ignore.
+    */
+    virtual int write(void* buf, size_t count, ssize_t* pnwrite);
+};
+
+/**
+* file reader, to read from file.
+*/
+class SrsFileReader
+{
+private:
+    std::string _file;
+    int fd;
+public:
+    SrsFileReader();
+    virtual ~SrsFileReader();
+public:
+    /**
+    * open file reader, can open then close then open...
+    */
+    virtual int open(std::string file);
+    virtual void close();
+public:
+    virtual bool is_open();
+    virtual int64_t tellg();
+    virtual void skip(int64_t size);
+    virtual int64_t lseek(int64_t offset);
+    virtual int64_t filesize();
+public:
+    /**
+    * read from file. 
+    * @param pnread the output nb_read, NULL to ignore.
+    */
+    virtual int read(void* buf, size_t count, ssize_t* pnread);
+};
+
+#endif