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authorThibaut Mattern <tmattern@users.sourceforge.net>2003-06-05 19:08:06 +0000
committerThibaut Mattern <tmattern@users.sourceforge.net>2003-06-05 19:08:06 +0000
commit807497efc1296d927cb0fc3b9665f03718fea359 (patch)
tree2582acf6c9dfc5e6125c37fc7335c9b5bd82d176 /src/xine-engine/io_helper.h
parent78985adfc5ff2f5e99aa8bbc9a1fff089bb9fc57 (diff)
downloadxine-lib-807497efc1296d927cb0fc3b9665f03718fea359.tar.gz
xine-lib-807497efc1296d927cb0fc3b9665f03718fea359.tar.bz2
io_helper functions.
see http://article.gmane.org/gmane.comp.video.xine.devel/4178 CVS patchset: 5005 CVS date: 2003/06/05 19:08:06
Diffstat (limited to 'src/xine-engine/io_helper.h')
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1 files changed, 110 insertions, 0 deletions
diff --git a/src/xine-engine/io_helper.h b/src/xine-engine/io_helper.h
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+/*
+ * Copyright (C) 2000-2003 the xine project,
+ *
+ * This file is part of xine, a free video player.
+ *
+ * xine is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * xine 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ * abortable i/o helper functions
+ */
+
+#ifndef IO_HELPER_H
+#define IO_HELPER_H
+
+#include "xine_internal.h"
+
+
+/* select states */
+#define XIO_READ_READY 1
+#define XIO_WRITE_READY 2
+
+/* xine select return codes */
+#define XIO_READY 0
+#define XIO_ERROR 1
+#define XIO_ABORTED 2
+#define XIO_TIMEOUT 3
+
+
+/*
+ * Waits for a file descriptor/socket to change status.
+ *
+ * network input plugins should use this function in order to
+ * not freeze the engine.
+ *
+ * params :
+ * fd file/socket descriptor
+ * state XIO_READ_READY, XIO_WRITE_READY
+ * *abort an other thread can abort this function by setting *abort
+ * timeout_sec timeout in seconds
+ *
+ * return value :
+ * XIO_READY the file descriptor is ready for cmd
+ * XIO_ERROR an i/o error occured
+ * XIO_ABORTED command aborted by an other thread
+ * XIO_TIMEOUT the file descriptor is not ready after timeout_msec milliseconds
+ */
+int xio_select (xine_stream_t *stream, int fd, int state, int timeout_msec);
+
+
+/*
+ * open a tcp connection
+ *
+ * returns a socket descriptor or -1 if an error occured
+ */
+int xio_tcp_connect(xine_stream_t *stream, const char *host, int port);
+
+/*
+ * read from tcp socket checking demux_action_pending
+ *
+ * network input plugins should use this function in order to
+ * not freeze the engine.
+ *
+ * aborts with zero if no data is available and *abort is set
+ */
+off_t xio_tcp_read (xine_stream_t *stream, int s, char *buf, off_t todo);
+
+
+/*
+ * write to a tcp socket checking demux_action_pending
+ *
+ * network input plugins should use this function in order to
+ * not freeze the engine.
+ *
+ * aborts with zero if no data is available and *abort is set
+ */
+off_t xio_tcp_write (xine_stream_t *stream, int s, char *buf, off_t todo);
+
+/*
+ * read from a file descriptor checking demux_action_pending
+ *
+ * the fifo input plugin should use this function in order to
+ * not freeze the engine.
+ *
+ * aborts with zero if no data is available and *abort is set
+ */
+off_t xio_file_read (xine_stream_t *stream, int fd, char *buf, off_t todo);
+
+
+/*
+ * write to a tcp socket checking demux_action_pending
+ *
+ * the fifo input plugin should use this function in order to
+ * not freeze the engine.
+ *
+ * aborts with zero if *abort is set
+ */
+off_t xio_file_write (xine_stream_t *stream, int fd, char *buf, off_t todo);
+
+#endif