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| | | /********** |
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| | | This library is free software; you can redistribute it and/or modify it under |
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| | | the terms of the GNU Lesser General Public License as published by the |
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| | | Free Software Foundation; either version 3 of the License, or (at your |
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| | | option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.) |
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| | | |
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| | | This library is distributed in the hope that it will be useful, but WITHOUT |
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| | | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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| | | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for |
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| | | more details. |
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| | | |
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| | | You should have received a copy of the GNU Lesser General Public License |
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| | | along with this library; if not, write to the Free Software Foundation, Inc., |
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| | | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| | | **********/ |
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| | | // "liveMedia" |
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| | | // Copyright (c) 1996-2017 Live Networks, Inc. All rights reserved. |
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| | | // Common routines for opening/closing named input files |
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| | | // C++ header |
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| | | |
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| | | #ifndef _INPUT_FILE_HH |
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| | | #define _INPUT_FILE_HH |
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| | | |
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| | | #include <UsageEnvironment.hh> |
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| | | #include <stdio.h> |
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| | | |
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| | | #if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_WCE)) |
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| | | #ifndef _WIN32_WCE |
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| | | // Include header files that might be needed by Windows (in code that uses this header file): |
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| | | #include <io.h> |
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| | | #include <fcntl.h> |
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| | | #endif |
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| | | |
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| | | #define READ_FROM_FILES_SYNCHRONOUSLY 1 |
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| | | // Because Windows is a silly toy operating system that doesn't (reliably) treat |
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| | | // open files as being readable sockets (which can be handled within the default |
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| | | // "BasicTaskScheduler" event loop, using "select()"), we implement file reading |
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| | | // in Windows using synchronous, rather than asynchronous, I/O. This can severely |
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| | | // limit the scalability of servers using this code that run on Windows. |
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| | | // If this is a problem for you, then either use a better operating system, |
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| | | // or else write your own Windows-specific event loop ("TaskScheduler" subclass) |
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| | | // that can handle readable data in Windows open files as an event. |
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| | | #endif |
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| | | |
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| | | #ifndef _WIN32_WCE |
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| | | #include <sys/stat.h> |
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| | | #endif |
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| | | |
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| | | FILE* OpenInputFile(UsageEnvironment& env, char const* fileName); |
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| | | |
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| | | void CloseInputFile(FILE* fid); |
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| | | |
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| | | u_int64_t GetFileSize(char const* fileName, FILE* fid); |
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| | | // 0 means zero-length, unbounded, or unknown |
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| | | |
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| | | int64_t SeekFile64(FILE *fid, int64_t offset, int whence); |
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| | | // A platform-independent routine for seeking within (possibly) large files |
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| | | |
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| | | int64_t TellFile64(FILE *fid); |
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| | | // A platform-independent routine for reporting the position within |
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| | | // (possibly) large files |
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| | | |
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| | | Boolean FileIsSeekable(FILE *fid); |
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| | | // Tests whether "fid" is seekable, by trying to seek within it. |
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| | | |
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| | | #endif |
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