mirror of https://github.com/FFmpeg/FFmpeg.git
Signed-off-by: Martin Storsjö <martin@martin.st>pull/2/head
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/*
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* Copyright (c) 2007 The Libav Project |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "network.h" |
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int ff_network_init(void) |
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{ |
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#if HAVE_WINSOCK2_H |
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WSADATA wsaData; |
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if (WSAStartup(MAKEWORD(1,1), &wsaData)) |
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return 0; |
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#endif |
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return 1; |
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} |
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int ff_network_wait_fd(int fd, int write) |
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{ |
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int ev = write ? POLLOUT : POLLIN; |
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struct pollfd p = { .fd = fd, .events = ev, .revents = 0 }; |
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int ret; |
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ret = poll(&p, 1, 100); |
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return ret < 0 ? ff_neterrno() : p.revents & (ev | POLLERR | POLLHUP) ? 0 : AVERROR(EAGAIN); |
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} |
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void ff_network_close(void) |
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{ |
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#if HAVE_WINSOCK2_H |
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WSACleanup(); |
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#endif |
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} |
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#if HAVE_WINSOCK2_H |
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int ff_neterrno(void) |
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{ |
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int err = WSAGetLastError(); |
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switch (err) { |
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case WSAEWOULDBLOCK: |
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return AVERROR(EAGAIN); |
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case WSAEINTR: |
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return AVERROR(EINTR); |
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} |
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return -err; |
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} |
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#endif |
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int ff_is_multicast_address(struct sockaddr *addr) |
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{ |
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if (addr->sa_family == AF_INET) { |
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return IN_MULTICAST(ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr)); |
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} |
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#if HAVE_STRUCT_SOCKADDR_IN6 |
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if (addr->sa_family == AF_INET6) { |
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return IN6_IS_ADDR_MULTICAST(&((struct sockaddr_in6 *)addr)->sin6_addr); |
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} |
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#endif |
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return 0; |
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} |
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