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")
61 struct vout_display_sys_t
63 Display *display; /* Xlib instance */
64 vout_window_t *embed; /* VLC window (when windowed) */
66 xcb_cursor_t cursor; /* blank cursor */
67 xcb_window_t window; /* drawable X window */
68 xcb_window_t glwin; /* GLX window */
69 uint16_t width; /* render pixel width */
70 uint16_t height; /* render pixel height */
71 bool visible; /* whether to draw */
72 bool v1_3; /* whether GLX >= 1.3 is available */
76 vout_display_opengl_t vgl;
77 picture_pool_t *pool; /* picture pool */
80 static picture_t *Get (vout_display_t *);
81 static void PictureRender (vout_display_t *, picture_t *);
82 static void PictureDisplay (vout_display_t *, picture_t *);
83 static int Control (vout_display_t *, int, va_list);
84 static void Manage (vout_display_t *);
86 static void SwapBuffers (vout_opengl_t *gl);
88 static vout_window_t *MakeWindow (vout_display_t *vd)
90 vout_window_cfg_t wnd_cfg;
92 memset (&wnd_cfg, 0, sizeof (wnd_cfg));
93 wnd_cfg.type = VOUT_WINDOW_TYPE_XID;
94 wnd_cfg.width = vd->cfg->display.width;
95 wnd_cfg.height = vd->cfg->display.height;
97 vout_window_t *wnd = vout_display_NewWindow (vd, &wnd_cfg);
99 msg_Err (vd, "parent window not available");
103 static const xcb_screen_t *
104 FindWindow (vout_display_t *vd, xcb_connection_t *conn,
105 unsigned *restrict pnum, uint8_t *restrict pdepth,
106 uint16_t *restrict pwidth, uint16_t *restrict pheight)
108 vout_display_sys_t *sys = vd->sys;
110 xcb_get_geometry_reply_t *geo =
111 xcb_get_geometry_reply (conn,
112 xcb_get_geometry (conn, sys->embed->xid), NULL);
115 msg_Err (vd, "parent window not valid");
119 xcb_window_t root = geo->root;
120 *pdepth = geo->depth;
121 *pwidth = geo->width;
122 *pheight = geo->height;
125 /* Find the selected screen */
126 const xcb_setup_t *setup = xcb_get_setup (conn);
127 const xcb_screen_t *screen = NULL;
130 for (xcb_screen_iterator_t i = xcb_setup_roots_iterator (setup);
132 xcb_screen_next (&i))
134 if (i.data->root == root)
144 msg_Err (vd, "parent window screen not found");
147 msg_Dbg (vd, "using screen 0x%"PRIx32 " (number: %u)", root, num);
152 static bool CheckGLX (vout_display_t *vd, Display *dpy, bool *restrict pv13)
157 if (!glXQueryVersion (dpy, &major, &minor))
158 msg_Dbg (vd, "GLX extension not available");
161 msg_Dbg (vd, "GLX extension version %d.%d unknown", major, minor);
164 msg_Dbg (vd, "GLX extension version %d.%d too old", major, minor);
167 msg_Dbg (vd, "using GLX extension version %d.%d", major, minor);
174 static int CreateWindow (vout_display_t *vd, xcb_connection_t *conn,
175 uint_fast8_t depth, xcb_visualid_t vid)
177 vout_display_sys_t *sys = vd->sys;
178 const uint32_t mask = XCB_CW_EVENT_MASK;
179 const uint32_t values[] = {
180 /* XCB_CW_EVENT_MASK */
181 XCB_EVENT_MASK_VISIBILITY_CHANGE,
183 xcb_void_cookie_t cc, cm;
185 cc = xcb_create_window_checked (conn, depth, sys->window,
186 sys->embed->xid, 0, 0,
187 sys->width, sys->height, 0,
188 XCB_WINDOW_CLASS_INPUT_OUTPUT,
190 cm = xcb_map_window_checked (conn, sys->window);
191 if (CheckError (vd, conn, "cannot create X11 window", cc)
192 || CheckError (vd, conn, "cannot map X11 window", cm))
195 msg_Dbg (vd, "using X11 window %08"PRIx32, sys->window);
200 * Probe the X server.
202 static int Open (vlc_object_t *obj)
204 vout_display_t *vd = (vout_display_t *)obj;
205 vout_display_sys_t *sys = malloc (sizeof (*sys));
215 sys->embed = MakeWindow (vd);
216 if (sys->embed == NULL)
222 /* Connect to X server */
223 Display *dpy = XOpenDisplay (sys->embed->x11_display);
226 vout_display_DeleteWindow (vd, sys->embed);
232 XSetEventQueueOwner (dpy, XCBOwnsEventQueue);
234 if (!CheckGLX (vd, dpy, &sys->v1_3))
237 xcb_connection_t *conn = XGetXCBConnection (dpy);
239 RegisterMouseEvents (obj, conn, sys->embed->xid);
241 /* Find window parameters */
244 const xcb_screen_t *scr = FindWindow (vd, conn, &snum, &depth,
245 &sys->width, &sys->height);
249 sys->window = xcb_generate_id (conn);
251 /* Determine our pixel format */
254 static const int attr[] = {
258 GLX_DOUBLEBUFFER, True,
259 GLX_X_RENDERABLE, True,
260 GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
264 GLXFBConfig *confs = glXChooseFBConfig (dpy, snum, attr, &nelem);
267 msg_Err (vd, "no GLX frame bufer configurations");
271 /*XVisualInfo *vi = glXGetVisualFromFBConfig (dpy, confs[0]);*/
272 CreateWindow (vd, conn, depth, 0 /* ??? */);
275 sys->glwin = glXCreateWindow (dpy, confs[0], sys->window, NULL );
276 if (sys->glwin == None)
278 msg_Err (vd, "cannot create GLX window");
283 /* Create an OpenGL context */
284 sys->ctx = glXCreateNewContext (dpy, confs[0], GLX_RGBA_TYPE, NULL,
287 if (sys->ctx == NULL)
289 msg_Err (vd, "cannot create GLX context");
293 if (glXMakeContextCurrent (dpy, sys->glwin, sys->glwin, sys->ctx))
306 XVisualInfo *vi = glXChooseVisual (dpy, snum, attr);
309 msg_Err (vd, "cannot find GLX 1.2 visual" );
312 msg_Dbg (vd, "using GLX visual ID 0x%"PRIx32, (uint32_t)vi->visualid);
314 if (CreateWindow (vd, conn, depth, 0 /* ??? */) == 0)
315 sys->ctx = glXCreateContext (dpy, vi, 0, True);
317 if (sys->ctx == NULL)
319 msg_Err (vd, "cannot create GLX context");
323 if (glXMakeCurrent (dpy, sys->window, sys->ctx) == False)
325 sys->glwin = sys->window;
328 /* Initialize common OpenGL video display */
330 sys->gl.unlock = NULL;
331 sys->gl.swap = SwapBuffers;
334 if (vout_display_opengl_Init (&sys->vgl, &vd->fmt, &sys->gl))
340 sys->cursor = CreateBlankCursor (conn, scr);
341 sys->visible = false;
344 vout_display_info_t info = vd->info;
345 info.has_pictures_invalid = false;
347 /* Setup vout_display_t once everything is fine */
351 vd->prepare = PictureRender;
352 vd->display = PictureDisplay;
353 vd->control = Control;
357 vout_display_SendEventFullscreen (vd, false);
358 vout_display_SendEventDisplaySize (vd, sys->width, sys->height, false);
369 * Disconnect from the X server.
371 static void Close (vlc_object_t *obj)
373 vout_display_t *vd = (vout_display_t *)obj;
374 vout_display_sys_t *sys = vd->sys;
375 Display *dpy = sys->display;
377 if (sys->gl.sys != NULL)
378 vout_display_opengl_Clean (&sys->vgl);
380 if (sys->ctx != NULL)
384 glXMakeContextCurrent (dpy, None, None, NULL);
385 glXDestroyWindow (dpy, sys->glwin);
388 glXMakeCurrent (dpy, None, NULL);
389 glXDestroyContext (dpy, sys->ctx);
392 vout_display_DeleteWindow (vd, sys->embed);
396 static void SwapBuffers (vout_opengl_t *gl)
398 vout_display_sys_t *sys = gl->sys;
400 glViewport (0, 0, sys->width, sys->height);
401 glXSwapBuffers (sys->display, sys->glwin);
405 * Return a direct buffer
407 static picture_t *Get (vout_display_t *vd)
409 vout_display_sys_t *sys = vd->sys;
413 sys->pool = vout_display_opengl_GetPool (&sys->vgl);
417 return picture_pool_Get (sys->pool);
420 static void PictureRender (vout_display_t *vd, picture_t *pic)
422 vout_display_sys_t *sys = vd->sys;
424 vout_display_opengl_Prepare (&sys->vgl, pic);
427 static void PictureDisplay (vout_display_t *vd, picture_t *pic)
429 vout_display_sys_t *sys = vd->sys;
431 vout_display_opengl_Display (&sys->vgl, &vd->source);
432 picture_Release (pic);
435 static int Control (vout_display_t *vd, int query, va_list ap)
437 vout_display_sys_t *sys = vd->sys;
441 case VOUT_DISPLAY_CHANGE_FULLSCREEN:
443 const vout_display_cfg_t *c = va_arg (ap, const vout_display_cfg_t *);
444 return vout_window_SetFullScreen (sys->embed, c->is_fullscreen);
447 case VOUT_DISPLAY_CHANGE_ON_TOP:
449 int b_on_top = (int)va_arg (ap, int);
450 return vout_window_SetOnTop (sys->embed, b_on_top);
453 case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:
454 case VOUT_DISPLAY_CHANGE_DISPLAY_FILLED:
455 case VOUT_DISPLAY_CHANGE_ZOOM:
456 case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT:
457 case VOUT_DISPLAY_CHANGE_SOURCE_CROP:
459 xcb_connection_t *conn = XGetXCBConnection (sys->display);
460 const vout_display_cfg_t *cfg;
461 const video_format_t *source;
462 bool is_forced = false;
464 if (query == VOUT_DISPLAY_CHANGE_SOURCE_ASPECT
465 || query == VOUT_DISPLAY_CHANGE_SOURCE_CROP)
467 source = (const video_format_t *)va_arg (ap, const video_format_t *);
472 source = &vd->source;
473 cfg = (const vout_display_cfg_t*)va_arg (ap, const vout_display_cfg_t *);
474 if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE)
475 is_forced = (bool)va_arg (ap, int);
479 if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE
481 && (cfg->display.width != vd->cfg->display.width
482 ||cfg->display.height != vd->cfg->display.height)
483 && vout_window_SetSize (sys->embed,
484 cfg->display.width, cfg->display.height))
487 vout_display_place_t place;
488 vout_display_PlacePicture (&place, source, cfg, false);
489 sys->width = place.width;
490 sys->height = place.height;
492 /* Move the picture within the window */
493 const uint32_t values[] = { place.x, place.y,
494 place.width, place.height, };
495 xcb_configure_window (conn, sys->window,
496 XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y
497 | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
503 /* Hide the mouse. It will be send when
504 * vout_display_t::info.b_hide_mouse is false */
505 case VOUT_DISPLAY_HIDE_MOUSE:
506 xcb_change_window_attributes (XGetXCBConnection (sys->display),
508 XCB_CW_CURSOR, &(uint32_t){ sys->cursor });
510 case VOUT_DISPLAY_RESET_PICTURES:
513 msg_Err (vd, "Unknown request in XCB vout display");
518 static void Manage (vout_display_t *vd)
520 vout_display_sys_t *sys = vd->sys;
521 xcb_connection_t *conn = XGetXCBConnection (sys->display);
523 ManageEvent (vd, conn, &sys->visible);