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Merge pull request #137 from aous72/adding_rtp_decoder
Adding a simple RTP client that is compliant with draft-ietf-avtcore-rtp-j2k-scl-00.
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| //***************************************************************************/ | ||
| // This software is released under the 2-Clause BSD license, included | ||
| // below. | ||
| // | ||
| // Copyright (c) 2024, Aous Naman | ||
| // Copyright (c) 2024, Kakadu Software Pty Ltd, Australia | ||
| // Copyright (c) 2024, The University of New South Wales, Australia | ||
| // | ||
| // Redistribution and use in source and binary forms, with or without | ||
| // modification, are permitted provided that the following conditions are | ||
| // met: | ||
| // | ||
| // 1. Redistributions of source code must retain the above copyright | ||
| // notice, this list of conditions and the following disclaimer. | ||
| // | ||
| // 2. Redistributions in binary form must reproduce the above copyright | ||
| // notice, this list of conditions and the following disclaimer in the | ||
| // documentation and/or other materials provided with the distribution. | ||
| // | ||
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | ||
| // IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | ||
| // TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | ||
| // PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| // HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED | ||
| // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
| // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
| // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
| // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
| // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| //***************************************************************************/ | ||
| // This file is part of the OpenJPH software implementation. | ||
| // File: ojph_socket.h | ||
| // Author: Aous Naman | ||
| // Date: 17 April 2024 | ||
| //***************************************************************************/ | ||
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| #ifndef OJPH_SOCKET_H | ||
| #define OJPH_SOCKET_H | ||
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| #include <string> | ||
| #include "ojph_arch.h" | ||
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| #ifdef OJPH_OS_WINDOWS | ||
| #include <winsock2.h> | ||
| #include <WS2tcpip.h> | ||
|
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| typedef SOCKET ojph_socket; | ||
| #define OJPH_INVALID_SOCKET (INVALID_SOCKET) | ||
| #define OJPH_EWOULDBLOCK (WSAEWOULDBLOCK) | ||
| #else | ||
| #include <sys/types.h> | ||
| #include <sys/socket.h> | ||
| #include <netinet/in.h> | ||
| #include <arpa/inet.h> | ||
| #include <netdb.h> | ||
| #include <unistd.h> | ||
| #include <errno.h> | ||
| #include <fcntl.h> | ||
|
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| typedef int ojph_socket; | ||
| #define OJPH_INVALID_SOCKET (-1) | ||
| #define OJPH_EWOULDBLOCK (EWOULDBLOCK) | ||
| #endif | ||
|
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||
| namespace ojph | ||
| { | ||
| namespace net | ||
| { | ||
|
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| /////////////////////////////////////////////////////////////////////////// | ||
| // | ||
| // | ||
| // | ||
| // | ||
| // | ||
| /////////////////////////////////////////////////////////////////////////// | ||
|
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| //************************************************************************/ | ||
| /** @brief A small wrapper for socket that only abstract Winsock2 | ||
| * | ||
| * This is a small wrapper that only abstracts the difference between | ||
| * Windows and Linux/MacOS socket implementations. | ||
| * It does not not do much other than define a local member variable | ||
| * of type int for Linux/OS and type SOCKET for Windows, which is | ||
| * unsigned int/int64. | ||
| */ | ||
| class socket { | ||
| public: | ||
| /** | ||
| * @brief default constructor | ||
| */ | ||
| socket() { s = OJPH_INVALID_SOCKET; } | ||
|
|
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| /** | ||
| * @brief a copy constructor | ||
| */ | ||
| socket(const ojph_socket& s); | ||
|
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| /** | ||
| * @brief Abstracts socket closing function | ||
| */ | ||
| void close(); | ||
|
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| /** | ||
| * @brief Sets the blocking mode | ||
| * | ||
| * @param block sets to true to operate in blocking mode | ||
| * @return returns true when the operation succeeds | ||
| */ | ||
| bool set_blocking_mode(bool block); | ||
|
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| /** | ||
| * @brief provides access to the internal socket handle | ||
| * | ||
| * @return returns the internal socket handle | ||
| */ | ||
| ojph_socket intern() { return s; } | ||
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| private: | ||
| ojph_socket s; //!<int for Linux/MacOS and SOCKET for Windows | ||
| }; | ||
|
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| /////////////////////////////////////////////////////////////////////////// | ||
| // | ||
| // | ||
| // | ||
| // | ||
| // | ||
| /////////////////////////////////////////////////////////////////////////// | ||
|
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| //************************************************************************/ | ||
| /** @brief A small wrapper for some Winsock2 functionality | ||
| * | ||
| * This is useful for windows, as it initializes and destroys | ||
| * WinSock2 library. | ||
| * It keeps a count of how many times the constructor is called, | ||
| * reducing the count whenever the destructor is called. When the | ||
| * count reaches zero, the library is destroyed -- Windows only. | ||
| * | ||
| * It also allows the creation of a socket, access to the last error | ||
| * in a portable way, and the translation of an error into a text | ||
| * message. | ||
| */ | ||
| class socket_manager { | ||
| public: | ||
| /** | ||
| * @brief default constructor | ||
| * | ||
| * This function initializes the Winsock2 stack in windows; it | ||
| * also increments the static member that keeps count of how many | ||
| * times this object is used. | ||
| */ | ||
| socket_manager(); | ||
|
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| /** | ||
| * @brief default constructor | ||
| * | ||
| * This function cleans up the Winsock2 stack in windows when | ||
| * the static member that keeps count of how many times this object | ||
| * is used reaches zero. | ||
| * | ||
| */ | ||
| ~socket_manager(); | ||
|
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| /** | ||
| * @brief Abstructs socket creation | ||
| * | ||
| * This function takes the same parameters as the conventional | ||
| * socket() function | ||
| * | ||
| * @param domain the same as in conventional socket() function | ||
| * @param type the same as in conventional socket() function | ||
| * @param protocol the same as in conventional socket() function | ||
| * @return returns an abstraction of socket | ||
| * | ||
| */ | ||
| socket create_socket(int domain, int type, int protocol); | ||
|
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| /** | ||
| * @brief Abstructs get last error or errno | ||
| * | ||
| * This function abstracts Windows GetLastError or Linux errno | ||
| * | ||
| * @return returns a number representing the error | ||
| * | ||
| */ | ||
| int get_last_error(); | ||
|
|
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| /** | ||
| * @brief Abstructs obtaining a textual message for an errnum | ||
| * | ||
| * This function abstracts obtaining a textual message for an errnum | ||
| * | ||
| * @param errnum the error number | ||
| * @return a string holding a textual message for the error number | ||
| * | ||
| */ | ||
| std::string get_error_message(int errnum); | ||
|
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| /** | ||
| * @brief Abstructs obtaining a textual message for GetLastError/errno | ||
| * | ||
| * This function combines get_error_message() and get_last_error(). | ||
| * This function effectively calls get_last_error() and uses the | ||
| * returned error number to obtain a string by calling | ||
| * get_error_message(errnum). | ||
| * | ||
| * @return a string holding a textual message for the error number | ||
| * | ||
| */ | ||
| std::string get_last_error_message(); | ||
|
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| /** | ||
| * @brief Abstractly obtains the 32-bit IPv4 address integer | ||
| * | ||
| * This function obtains a 32-bit integer that represents the IPv4 | ||
| * address in abstrct way (working both in Windows and Linux). | ||
| * This is really an independent function, but it is convenient to | ||
| * put it here. | ||
| * | ||
| * @return returns an integer holding IPv4 address | ||
| * | ||
| */ | ||
| static ui32 get_addr(const sockaddr_in& addr); | ||
|
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| private: | ||
| static int ojph_socket_manager_counter; | ||
| }; | ||
|
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| } // !net namespace | ||
| } // !ojph namespace | ||
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| #endif // !OJPH_SOCKET_H |
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