avformat: Split out functions from network.h to a new file, network.c

Signed-off-by: Martin Storsjö <martin@martin.st>

1 files changed, 76 insertions, 0 deletions

diff --git a/libavformat/network.c b/libavformat/network.c
new file mode 100644
index 0000000000..f694614e8b
--- /dev/null
+++ b/libavformat/network.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2007 The Libav Project
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "network.h"
+
+int ff_network_init(void)
+{
+#if HAVE_WINSOCK2_H
+    WSADATA wsaData;
+    if (WSAStartup(MAKEWORD(1,1), &wsaData))
+        return 0;
+#endif
+    return 1;
+}
+
+int ff_network_wait_fd(int fd, int write)
+{
+    int ev = write ? POLLOUT : POLLIN;
+    struct pollfd p = { .fd = fd, .events = ev, .revents = 0 };
+    int ret;
+    ret = poll(&p, 1, 100);
+    return ret < 0 ? ff_neterrno() : p.revents & (ev | POLLERR | POLLHUP) ? 0 : AVERROR(EAGAIN);
+}
+
+void ff_network_close(void)
+{
+#if HAVE_WINSOCK2_H
+    WSACleanup();
+#endif
+}
+
+#if HAVE_WINSOCK2_H
+int ff_neterrno(void)
+{
+    int err = WSAGetLastError();
+    switch (err) {
+    case WSAEWOULDBLOCK:
+        return AVERROR(EAGAIN);
+    case WSAEINTR:
+        return AVERROR(EINTR);
+    }
+    return -err;
+}
+#endif
+
+int ff_is_multicast_address(struct sockaddr *addr)
+{
+    if (addr->sa_family == AF_INET) {
+        return IN_MULTICAST(ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr));
+    }
+#if HAVE_STRUCT_SOCKADDR_IN6
+    if (addr->sa_family == AF_INET6) {
+        return IN6_IS_ADDR_MULTICAST(&((struct sockaddr_in6 *)addr)->sin6_addr);
+    }
+#endif
+
+    return 0;
+}
+