windows ffmpeg extern "C" #include

<unistd.h> is a header file that is typically used in Unix-based operating systems, such as Linux or macOS. It provides access to various system calls and constants, including the close() function for closing file descriptors.

In Windows, the equivalent functionality is provided by the Windows API. To include the necessary headers for using Windows API functions, you would typically include <windows.h> instead of <unistd.h>. However, please note that the "extern "C"" syntax is not used when including header files in C or C++ code. It is used in function declarations to indicate that the function should use C linkage, which affects how the function name is mangled by the compiler.

If you are working with FFmpeg on Windows, you would typically include the necessary FFmpeg headers, such as <libavformat/avformat.h> or <libavcodec/avcodec.h>, depending on your specific needs. These headers provide the necessary declarations and definitions for working with FFmpeg's functionality.