3 * @brief GLX video output module for VLC media player
5 /*****************************************************************************
6 * Copyright © 2004 the VideoLAN team
7 * Copyright © 2009 Rémi Denis-Courmont
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 ****************************************************************************/
32 #include <X11/Xlib-xcb.h>
35 #include <vlc_common.h>
36 #include <vlc_plugin.h>
37 #include <vlc_vout_display.h>
38 #include <vlc_vout_opengl.h>
39 #include "../opengl.h"
43 static int Open (vlc_object_t *);
44 static void Close (vlc_object_t *);
50 set_shortname (N_("GLX"))
51 set_description (N_("GLX video output (XCB)"))
52 set_category (CAT_VIDEO)
53 set_subcategory (SUBCAT_VIDEO_VOUT)
54 set_capability ("vout display", 20)
55 set_callbacks (Open, Close)
57 add_shortcut ("xcb-glx")
59 add_shortcut ("opengl")
62 struct vout_display_sys_t
64 Display *display; /* Xlib instance */
65 vout_window_t *embed; /* VLC window (when windowed) */
67 xcb_cursor_t cursor; /* blank cursor */
68 xcb_window_t window; /* drawable X window */
69 xcb_window_t glwin; /* GLX window */
70 bool visible; /* whether to draw */
71 bool v1_3; /* whether GLX >= 1.3 is available */
75 vout_display_opengl_t vgl;
76 picture_pool_t *pool; /* picture pool */
79 static picture_pool_t *Pool (vout_display_t *, unsigned);
80 static void PictureRender (vout_display_t *, picture_t *);
81 static void PictureDisplay (vout_display_t *, picture_t *);
82 static int Control (vout_display_t *, int, va_list);
83 static void Manage (vout_display_t *);
85 static void SwapBuffers (vout_opengl_t *gl);
87 static vout_window_t *MakeWindow (vout_display_t *vd)
89 vout_window_cfg_t wnd_cfg;
91 memset (&wnd_cfg, 0, sizeof (wnd_cfg));
92 wnd_cfg.type = VOUT_WINDOW_TYPE_XID;
93 wnd_cfg.x = var_InheritInteger (vd, "video-x");
94 wnd_cfg.y = var_InheritInteger (vd, "video-y");
95 wnd_cfg.width = vd->cfg->display.width;
96 wnd_cfg.height = vd->cfg->display.height;
98 vout_window_t *wnd = vout_display_NewWindow (vd, &wnd_cfg);
100 msg_Err (vd, "parent window not available");
104 static const xcb_screen_t *
105 FindWindow (vout_display_t *vd, xcb_connection_t *conn,
106 unsigned *restrict pnum, uint8_t *restrict pdepth,
107 uint16_t *restrict pwidth, uint16_t *restrict pheight)
109 vout_display_sys_t *sys = vd->sys;
111 xcb_get_geometry_reply_t *geo =
112 xcb_get_geometry_reply (conn,
113 xcb_get_geometry (conn, sys->embed->handle.xid), NULL);
116 msg_Err (vd, "parent window not valid");
120 xcb_window_t root = geo->root;
121 *pdepth = geo->depth;
122 *pwidth = geo->width;
123 *pheight = geo->height;
126 /* Find the selected screen */
127 const xcb_setup_t *setup = xcb_get_setup (conn);
128 const xcb_screen_t *screen = NULL;
131 for (xcb_screen_iterator_t i = xcb_setup_roots_iterator (setup);
133 xcb_screen_next (&i))
135 if (i.data->root == root)
145 msg_Err (vd, "parent window screen not found");
148 msg_Dbg (vd, "using screen 0x%"PRIx32 " (number: %u)", root, num);
153 static bool CheckGLX (vout_display_t *vd, Display *dpy, bool *restrict pv13)
158 if (!glXQueryVersion (dpy, &major, &minor))
159 msg_Dbg (vd, "GLX extension not available");
162 msg_Dbg (vd, "GLX extension version %d.%d unknown", major, minor);
165 msg_Dbg (vd, "GLX extension version %d.%d too old", major, minor);
168 msg_Dbg (vd, "using GLX extension version %d.%d", major, minor);
175 static int CreateWindow (vout_display_t *vd, xcb_connection_t *conn,
176 uint_fast8_t depth, xcb_visualid_t vid,
177 uint_fast16_t width, uint_fast16_t height)
179 vout_display_sys_t *sys = vd->sys;
180 const uint32_t mask = XCB_CW_EVENT_MASK;
181 const uint32_t values[] = {
182 /* XCB_CW_EVENT_MASK */
183 XCB_EVENT_MASK_VISIBILITY_CHANGE,
185 xcb_void_cookie_t cc, cm;
187 cc = xcb_create_window_checked (conn, depth, sys->window,
188 sys->embed->handle.xid, 0, 0,
190 XCB_WINDOW_CLASS_INPUT_OUTPUT,
192 cm = xcb_map_window_checked (conn, sys->window);
193 if (CheckError (vd, conn, "cannot create X11 window", cc)
194 || CheckError (vd, conn, "cannot map X11 window", cm))
197 msg_Dbg (vd, "using X11 window %08"PRIx32, sys->window);
202 * Probe the X server.
204 static int Open (vlc_object_t *obj)
206 if (!XInitThreads ())
209 vout_display_t *vd = (vout_display_t *)obj;
210 vout_display_sys_t *sys = malloc (sizeof (*sys));
220 sys->embed = MakeWindow (vd);
221 if (sys->embed == NULL)
227 /* Connect to X server */
228 Display *dpy = XOpenDisplay (sys->embed->display.x11);
231 vout_display_DeleteWindow (vd, sys->embed);
237 XSetEventQueueOwner (dpy, XCBOwnsEventQueue);
239 if (!CheckGLX (vd, dpy, &sys->v1_3))
242 xcb_connection_t *conn = XGetXCBConnection (dpy);
244 RegisterMouseEvents (obj, conn, sys->embed->handle.xid);
246 /* Find window parameters */
249 uint16_t width, height;
250 const xcb_screen_t *scr = FindWindow (vd, conn, &snum, &depth,
255 sys->window = xcb_generate_id (conn);
257 /* Determine our pixel format */
260 static const int attr[] = {
264 GLX_DOUBLEBUFFER, True,
265 GLX_X_RENDERABLE, True,
266 GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
269 xcb_get_window_attributes_reply_t *wa =
270 xcb_get_window_attributes_reply (conn,
271 xcb_get_window_attributes (conn, sys->embed->handle.xid),
275 xcb_visualid_t visual = wa->visual;
279 GLXFBConfig *confs = glXChooseFBConfig (dpy, snum, attr, &nelem);
282 msg_Err (vd, "no GLX frame bufer configurations");
289 for (int i = 0; i < nelem && !found; i++)
293 XVisualInfo *vi = glXGetVisualFromFBConfig (dpy, conf);
297 if (vi->visualid == visual)
305 msg_Err (vd, "no matching GLX frame buffer configuration");
310 if (!CreateWindow (vd, conn, depth, 0 /* ??? */, width, height))
311 sys->glwin = glXCreateWindow (dpy, conf, sys->window, NULL );
312 if (sys->glwin == None)
314 msg_Err (vd, "cannot create GLX window");
318 /* Create an OpenGL context */
319 sys->ctx = glXCreateNewContext (dpy, conf, GLX_RGBA_TYPE, NULL,
321 if (sys->ctx == NULL)
323 msg_Err (vd, "cannot create GLX context");
327 if (!glXMakeContextCurrent (dpy, sys->glwin, sys->glwin, sys->ctx))
340 XVisualInfo *vi = glXChooseVisual (dpy, snum, attr);
343 msg_Err (vd, "cannot find GLX 1.2 visual" );
346 msg_Dbg (vd, "using GLX visual ID 0x%"PRIx32, (uint32_t)vi->visualid);
348 if (CreateWindow (vd, conn, depth, 0 /* ??? */, width, height) == 0)
349 sys->ctx = glXCreateContext (dpy, vi, 0, True);
351 if (sys->ctx == NULL)
353 msg_Err (vd, "cannot create GLX context");
357 if (glXMakeCurrent (dpy, sys->window, sys->ctx) == False)
359 sys->glwin = sys->window;
362 /* Initialize common OpenGL video display */
364 sys->gl.unlock = NULL;
365 sys->gl.swap = SwapBuffers;
368 if (vout_display_opengl_Init (&sys->vgl, &vd->fmt, &sys->gl))
374 sys->cursor = CreateBlankCursor (conn, scr);
375 sys->visible = false;
378 vout_display_info_t info = vd->info;
379 info.has_pictures_invalid = false;
381 /* Setup vout_display_t once everything is fine */
385 vd->prepare = PictureRender;
386 vd->display = PictureDisplay;
387 vd->control = Control;
391 vout_display_SendEventFullscreen (vd, false);
392 vout_display_SendEventDisplaySize (vd, width, height, false);
403 * Disconnect from the X server.
405 static void Close (vlc_object_t *obj)
407 vout_display_t *vd = (vout_display_t *)obj;
408 vout_display_sys_t *sys = vd->sys;
409 Display *dpy = sys->display;
411 if (sys->gl.sys != NULL)
412 vout_display_opengl_Clean (&sys->vgl);
414 if (sys->ctx != NULL)
418 glXMakeContextCurrent (dpy, None, None, NULL);
419 glXDestroyWindow (dpy, sys->glwin);
422 glXMakeCurrent (dpy, None, NULL);
423 glXDestroyContext (dpy, sys->ctx);
426 /* show the default cursor */
427 xcb_change_window_attributes (XGetXCBConnection (sys->display),
428 sys->embed->handle.xid, XCB_CW_CURSOR,
429 &(uint32_t) { XCB_CURSOR_NONE });
430 xcb_flush (XGetXCBConnection (sys->display));
433 vout_display_DeleteWindow (vd, sys->embed);
437 static void SwapBuffers (vout_opengl_t *gl)
439 vout_display_sys_t *sys = gl->sys;
441 glXSwapBuffers (sys->display, sys->glwin);
445 * Return a direct buffer
447 static picture_pool_t *Pool (vout_display_t *vd, unsigned requested_count)
449 vout_display_sys_t *sys = vd->sys;
450 (void)requested_count;
453 sys->pool = vout_display_opengl_GetPool (&sys->vgl);
457 static void PictureRender (vout_display_t *vd, picture_t *pic)
459 vout_display_sys_t *sys = vd->sys;
461 vout_display_opengl_Prepare (&sys->vgl, pic);
464 static void PictureDisplay (vout_display_t *vd, picture_t *pic)
466 vout_display_sys_t *sys = vd->sys;
468 vout_display_opengl_Display (&sys->vgl, &vd->source);
469 picture_Release (pic);
472 static int Control (vout_display_t *vd, int query, va_list ap)
474 vout_display_sys_t *sys = vd->sys;
478 case VOUT_DISPLAY_CHANGE_FULLSCREEN:
480 const vout_display_cfg_t *c = va_arg (ap, const vout_display_cfg_t *);
481 return vout_window_SetFullScreen (sys->embed, c->is_fullscreen);
484 case VOUT_DISPLAY_CHANGE_WINDOW_STATE:
486 unsigned state = va_arg (ap, unsigned);
487 return vout_window_SetState (sys->embed, state);
490 case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:
491 case VOUT_DISPLAY_CHANGE_DISPLAY_FILLED:
492 case VOUT_DISPLAY_CHANGE_ZOOM:
493 case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT:
494 case VOUT_DISPLAY_CHANGE_SOURCE_CROP:
496 xcb_connection_t *conn = XGetXCBConnection (sys->display);
497 const vout_display_cfg_t *cfg;
498 const video_format_t *source;
499 bool is_forced = false;
501 if (query == VOUT_DISPLAY_CHANGE_SOURCE_ASPECT
502 || query == VOUT_DISPLAY_CHANGE_SOURCE_CROP)
504 source = (const video_format_t *)va_arg (ap, const video_format_t *);
509 source = &vd->source;
510 cfg = (const vout_display_cfg_t*)va_arg (ap, const vout_display_cfg_t *);
511 if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE)
512 is_forced = (bool)va_arg (ap, int);
516 if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE
518 && (cfg->display.width != vd->cfg->display.width
519 ||cfg->display.height != vd->cfg->display.height)
520 && vout_window_SetSize (sys->embed,
521 cfg->display.width, cfg->display.height))
524 vout_display_place_t place;
525 vout_display_PlacePicture (&place, source, cfg, false);
527 /* Move the picture within the window */
528 const uint32_t values[] = { place.x, place.y,
529 place.width, place.height, };
530 xcb_void_cookie_t ck =
531 xcb_configure_window_checked (conn, sys->window,
532 XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y
533 | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
535 if (CheckError (vd, conn, "cannot resize X11 window", ck))
538 glViewport (0, 0, place.width, place.height);
542 /* Hide the mouse. It will be send when
543 * vout_display_t::info.b_hide_mouse is false */
544 case VOUT_DISPLAY_HIDE_MOUSE:
545 xcb_change_window_attributes (XGetXCBConnection (sys->display),
546 sys->embed->handle.xid,
547 XCB_CW_CURSOR, &(uint32_t){ sys->cursor });
550 case VOUT_DISPLAY_GET_OPENGL:
552 vout_opengl_t **gl = va_arg (ap, vout_opengl_t **);
557 case VOUT_DISPLAY_RESET_PICTURES:
560 msg_Err (vd, "Unknown request in XCB vout display");
565 static void Manage (vout_display_t *vd)
567 vout_display_sys_t *sys = vd->sys;
568 xcb_connection_t *conn = XGetXCBConnection (sys->display);
570 ManageEvent (vd, conn, &sys->visible);