3 * @brief Legacy monolithic LibVLC video window provider
5 /*****************************************************************************
6 * Copyright © 2009 Rémi Denis-Courmont
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2.0
11 * of the License, or (at your option) any later version.
13 * This library 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.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 ****************************************************************************/
30 #include <vlc_common.h>
31 #include <vlc_plugin.h>
32 #include <vlc_vout_window.h>
34 static int Open (vlc_object_t *);
35 static void Close(vlc_object_t *);
41 set_shortname (N_("Drawable"))
42 set_description (N_("Embedded window video"))
43 set_category (CAT_VIDEO)
44 set_subcategory (SUBCAT_VIDEO_VOUT)
45 set_capability ("vout window xid", 70)
46 set_callbacks (Open, Close)
47 //add_integer ("drawable-hwnd", 0, NULL, HWN_TEXT, HWND_LONGTEXT, true) /* How to ? */
48 // change_unsaveable ()
51 static int Control (vout_window_t *, int, va_list);
53 /* TODO: move to vlc_variables.h */
54 static inline void *var_GetAddress (vlc_object_t *o, const char *name)
57 return var_Get (o, name, &val) ? NULL : val.p_address;
60 static vlc_mutex_t serializer = VLC_STATIC_MUTEX;
63 * Find the drawable set by libvlc application.
65 static int Open (vlc_object_t *obj)
67 vout_window_t *wnd = (vout_window_t *)obj;
71 if (var_Create (obj->p_libvlc, "hwnd-in-use", VLC_VAR_ADDRESS)
72 || var_Create (obj, "drawable-hwnd", VLC_VAR_DOINHERIT | VLC_VAR_ADDRESS))
75 val = var_GetAddress (obj, "drawable-hwnd");
76 var_Destroy (obj, "drawable-hwn");
78 /* Keep a list of busy drawables, so we don't overlap videos if there are
79 * more than one video track in the stream. */
80 vlc_mutex_lock (&serializer);
81 /* TODO: per-type list of busy drawables */
82 used = var_GetAddress (VLC_OBJECT (obj->p_libvlc), "drawables-in-use");
85 while (used[n] != NULL)
93 used = realloc (used, sizeof (*used) * (n + 2));
98 var_SetAddress (obj->p_libvlc, "hwnd-in-use", used);
103 msg_Warn (wnd, "HWND %p is busy", val);
106 vlc_mutex_unlock (&serializer);
111 wnd->handle.hwnd = val;
112 wnd->control = Control;
118 * Release the drawable.
120 static void Close (vlc_object_t *obj)
122 vout_window_t *wnd = (vout_window_t *)obj;
123 void **used, *val = wnd->sys;
126 /* Remove this drawable from the list of busy ones */
127 vlc_mutex_lock (&serializer);
128 used = var_GetAddress (VLC_OBJECT (obj->p_libvlc), "hwnd-in-use");
130 while (used[n] != val)
136 used[n] = used[n + 1];
137 while (used[++n] != NULL);
140 var_SetAddress (obj->p_libvlc, "hwnd-in-use", NULL);
141 vlc_mutex_unlock (&serializer);
145 /* Variables are reference-counted... */
146 var_Destroy (obj->p_libvlc, "hwnd-in-use");
150 static int Control (vout_window_t *wnd, int query, va_list ap)
154 case VOUT_WINDOW_SET_SIZE: /* not allowed */
155 case VOUT_WINDOW_SET_ON_TOP: /* not allowed either, would be ugly */
158 msg_Warn (wnd, "unsupported control query %d", query);