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lxdream.org :: lxdream/src/drivers/io_glib.c
lxdream 0.9.1
released Jun 29
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filename src/drivers/io_glib.c
changeset 1077:136fc24d17ef
prev1021:848db285a184
author nkeynes
date Fri Feb 24 21:17:47 2012 +1000 (10 years ago)
permissions -rw-r--r--
last change Factor video_width/video_height out into video_gl.c
Convert immediate-mode bits in video_gl.c into a structure for glDrawArray
Move setOrtho into defineOrthoMatrix in glutil.c
Rearrange various GL settings to keep a consistent state
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     1 /**
     2  * $Id$
     3  *
     4  * Glib-based networking support functions. Currently this is just for activity callbacks.
     5  *
     6  * Copyright (c) 2009 Nathan Keynes.
     7  *
     8  * This program is free software; you can redistribute it and/or modify
     9  * it under the terms of the GNU General Public License as published by
    10  * the Free Software Foundation; either version 2 of the License, or
    11  * (at your option) any later version.
    12  *
    13  * This program is distributed in the hope that it will be useful,
    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16  * GNU General Public License for more details.
    17  */
    19 #include <assert.h>
    20 #include <glib.h>
    21 #include <stdlib.h>
    22 #include "ioutil.h"
    24 struct io_glib_cbinfo {
    25     io_callback_t callback;
    26     guint sourceid;
    27     void * cbdata;
    28     void (*cbdealloc)(void *);
    29 };
    31 static gboolean io_glib_callback( GIOChannel *source, GIOCondition cond, gpointer data )
    32 {
    33     struct io_glib_cbinfo *cbinfo = (struct io_glib_cbinfo *)data;
    34     return cbinfo->callback( g_io_channel_unix_get_fd(source), cbinfo->cbdata);
    35 }
    37 static void io_glib_release( void *data )
    38 {
    39     struct io_glib_cbinfo *cbinfo = (struct io_glib_cbinfo *)data;
    40     if( cbinfo->cbdealloc ) {
    41         cbinfo->cbdealloc( cbinfo->cbdata );
    42     }
    43     free(cbinfo);
    44 }
    46 /**
    47  * Register a TCP server socket listener on an already open (and listening) 
    48  * socket. The socket must not have been previously registered.
    49  * @return TRUE on success, FALSE on failure.
    50  * 
    51  * Defined in netutil.h
    52  */ 
    53 io_listener_t io_register_tcp_listener( int fd, io_callback_t callback, void *data, void (*dealloc)(void*) )
    54 {
    55     return io_register_listener( fd, callback, data, dealloc );
    56 }
    58 io_listener_t io_register_listener( int fd, io_callback_t callback, void *data, void (*dealloc)(void *) )
    59 {
    60     struct io_glib_cbinfo *cbinfo = malloc( sizeof(struct io_glib_cbinfo) );
    61     assert(cbinfo != NULL);
    63     cbinfo->callback = callback;
    64     cbinfo->cbdata = data;
    65     cbinfo->cbdealloc = dealloc;
    67     /**
    68      * Note magic here: the watch creates an event source which holds a 
    69      * reference to the channel. We unref the channel so that the channel then
    70      * is automatically released when the event source goes away.
    71      */
    72     GIOChannel *chan = g_io_channel_unix_new(fd);
    73     g_io_channel_set_encoding( chan, NULL, NULL );
    74     g_io_channel_set_buffered(chan, FALSE);
    75     cbinfo->sourceid = g_io_add_watch_full( chan, 0, G_IO_IN, io_glib_callback, cbinfo, io_glib_release );
    76     g_io_channel_unref( chan );
    77     return cbinfo;
    78 }
    81 void io_unregister_listener( io_listener_t data )
    82 {
    83     struct io_glib_cbinfo *cbinfo = (struct io_glib_cbinfo *)data;
    84     g_source_remove(cbinfo->sourceid);
    85 }
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