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🎥 Command line media player
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C
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576/* * poll shim that supports device files on macOS. * * This file is part of mpv. * * mpv is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * mpv is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with mpv. If not, see <http://www.gnu.org/licenses/>. */
#include <stdlib.h>#include <poll.h>#include <sys/select.h>#include <stdio.h>
#include "osdep/polldev.h"
int polldev(struct pollfd fds[], nfds_t nfds, int timeout) {#ifdef __APPLE__ int maxfd = 0; fd_set readfds, writefds, errorfds; FD_ZERO(&readfds); FD_ZERO(&writefds); FD_ZERO(&errorfds); for (size_t i = 0; i < nfds; ++i) { struct pollfd *fd = &fds[i]; if (fd->fd > maxfd) { maxfd = fd->fd; } if ((fd->events & POLLIN)) { FD_SET(fd->fd, &readfds); } if ((fd->events & POLLOUT)) { FD_SET(fd->fd, &writefds); } if ((fd->events & POLLERR)) { FD_SET(fd->fd, &errorfds); } } struct timeval _timeout = { .tv_sec = timeout / 1000, .tv_usec = (timeout % 1000) * 1000 }; int n = select(maxfd + 1, &readfds, &writefds, &errorfds, timeout != -1 ? &_timeout : NULL); if (n < 0) { return n; } for (size_t i = 0; i < nfds; ++i) { struct pollfd *fd = &fds[i]; fd->revents = 0; if (FD_ISSET(fd->fd, &readfds)) { fd->revents |= POLLIN; } if (FD_ISSET(fd->fd, &writefds)) { fd->revents |= POLLOUT; } if (FD_ISSET(fd->fd, &errorfds)) { fd->revents |= POLLERR; } } return n;#else return poll(fds, nfds, timeout);#endif}