3 * @brief X C Bindings video output module for VLC media player
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
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 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 ****************************************************************************/
34 #include <vlc_common.h>
35 #include <vlc_plugin.h>
36 #include <vlc_vout_display.h>
37 #include <vlc_picture_pool.h>
38 #include <vlc_dialog.h>
42 #define ADAPTOR_TEXT N_("XVideo adaptor number")
43 #define ADAPTOR_LONGTEXT N_( \
44 "XVideo hardware adaptor to use. By default, VLC will " \
45 "use the first functional adaptor.")
47 #define SHM_TEXT N_("Use shared memory")
48 #define SHM_LONGTEXT N_( \
49 "Use shared memory to communicate between VLC and the X server.")
51 static int Open (vlc_object_t *);
52 static void Close (vlc_object_t *);
58 set_shortname (N_("XVideo"))
59 set_description (N_("XVideo output (XCB)"))
60 set_category (CAT_VIDEO)
61 set_subcategory (SUBCAT_VIDEO_VOUT)
62 set_capability ("vout display", 155)
63 set_callbacks (Open, Close)
65 add_integer ("xvideo-adaptor", -1, NULL,
66 ADAPTOR_TEXT, ADAPTOR_LONGTEXT, true)
67 add_bool ("x11-shm", true, NULL, SHM_TEXT, SHM_LONGTEXT, true)
68 add_deprecated_alias ("xvideo-shm")
69 add_shortcut ("xcb-xv")
71 add_shortcut ("xvideo")
74 #define MAX_PICTURES (VOUT_MAX_PICTURES)
76 struct vout_display_sys_t
78 xcb_connection_t *conn;
79 vout_window_t *embed;/* VLC window */
81 xcb_cursor_t cursor; /* blank cursor */
82 xcb_window_t window; /* drawable X window */
83 xcb_gcontext_t gc; /* context to put images */
84 xcb_xv_port_t port; /* XVideo port */
85 uint32_t id; /* XVideo format */
86 uint16_t width; /* display width */
87 uint16_t height; /* display height */
88 uint32_t data_size; /* picture byte size (for non-SHM) */
89 bool shm; /* whether to use MIT-SHM */
90 bool visible; /* whether it makes sense to draw at all */
92 xcb_xv_query_image_attributes_reply_t *att;
93 picture_pool_t *pool; /* picture pool */
94 picture_resource_t resource[MAX_PICTURES];
97 static picture_t *Get (vout_display_t *);
98 static void Display (vout_display_t *, picture_t *);
99 static int Control (vout_display_t *, int, va_list);
100 static void Manage (vout_display_t *);
103 * Check that the X server supports the XVideo extension.
105 static bool CheckXVideo (vout_display_t *vd, xcb_connection_t *conn)
107 xcb_xv_query_extension_reply_t *r;
108 xcb_xv_query_extension_cookie_t ck = xcb_xv_query_extension (conn);
111 /* We need XVideo 2.2 for PutImage */
112 r = xcb_xv_query_extension_reply (conn, ck, NULL);
114 msg_Dbg (vd, "XVideo extension not available");
117 msg_Dbg (vd, "XVideo extension v%"PRIu8".%"PRIu8" unknown",
121 msg_Dbg (vd, "XVideo extension v%"PRIu8".%"PRIu8" too old",
125 msg_Dbg (vd, "using XVideo extension v%"PRIu8".%"PRIu8,
133 static vlc_fourcc_t ParseFormat (vout_display_t *vd,
134 const xcb_xv_image_format_info_t *restrict f)
136 if (f->byte_order != ORDER && f->bpp != 8)
137 return 0; /* Argh! */
141 case XCB_XV_IMAGE_FORMAT_INFO_TYPE_RGB:
142 switch (f->num_planes)
149 return VLC_CODEC_RGB32;
153 return VLC_CODEC_RGB24;
157 return VLC_CODEC_RGB16;
159 return VLC_CODEC_RGB15;
163 return VLC_CODEC_RGB8;
168 msg_Err (vd, "unknown XVideo RGB format %"PRIx32" (%.4s)",
170 msg_Dbg (vd, " %"PRIu8" planes, %"PRIu8" bits/pixel, "
171 "depth %"PRIu8, f->num_planes, f->bpp, f->depth);
174 case XCB_XV_IMAGE_FORMAT_INFO_TYPE_YUV:
175 if (f->u_sample_bits != f->v_sample_bits
176 || f->vhorz_u_period != f->vhorz_v_period
177 || f->vvert_u_period != f->vvert_v_period
178 || f->y_sample_bits != 8 || f->u_sample_bits != 8
179 || f->vhorz_y_period != 1 || f->vvert_y_period != 1)
181 switch (f->num_planes)
187 if (f->vhorz_u_period == 1 && f->vvert_u_period == 1)
188 return VLC_CODEC_I444;
191 if (f->vhorz_u_period == 2 && f->vvert_u_period == 1)
193 if (!strcmp ((const char *)f->vcomp_order, "YUYV"))
194 return VLC_CODEC_YUYV;
195 if (!strcmp ((const char *)f->vcomp_order, "UYVY"))
196 return VLC_CODEC_UYVY;
205 if (f->vhorz_u_period == 2 && f->vvert_u_period == 2)
207 if (!strcmp ((const char *)f->vcomp_order, "YVU"))
208 return VLC_CODEC_YV12;
209 if (!strcmp ((const char *)f->vcomp_order, "YUV"))
210 return VLC_CODEC_I420;
216 msg_Err (vd, "unknown XVideo YUV format %"PRIx32" (%.4s)", f->id,
218 msg_Dbg (vd, " %"PRIu8" planes, %"PRIu32" bits/pixel, "
219 "%"PRIu32"/%"PRIu32"/%"PRIu32" bits/sample", f->num_planes,
220 f->bpp, f->y_sample_bits, f->u_sample_bits, f->v_sample_bits);
221 msg_Dbg (vd, " period: %"PRIu32"/%"PRIu32"/%"PRIu32"x"
222 "%"PRIu32"/%"PRIu32"/%"PRIu32,
223 f->vhorz_y_period, f->vhorz_u_period, f->vhorz_v_period,
224 f->vvert_y_period, f->vvert_u_period, f->vvert_v_period);
225 msg_Warn (vd, " order: %.32s", f->vcomp_order);
232 static const xcb_xv_image_format_info_t *
233 FindFormat (vout_display_t *vd,
234 vlc_fourcc_t chroma, const video_format_t *fmt,
236 const xcb_xv_list_image_formats_reply_t *list,
237 xcb_xv_query_image_attributes_reply_t **restrict pa)
239 xcb_connection_t *conn = vd->sys->conn;
240 const xcb_xv_image_format_info_t *f, *end;
243 f = xcb_xv_list_image_formats_format (list);
245 f = (xcb_xv_image_format_info_t *) (list + 1);
247 end = f + xcb_xv_list_image_formats_format_length (list);
250 if (chroma != ParseFormat (vd, f))
253 /* VLC pads scanline to 16 pixels internally */
254 unsigned width = (fmt->i_width + 15) & ~15;
255 unsigned height = (fmt->i_height + 15) & ~15;
256 xcb_xv_query_image_attributes_reply_t *i;
257 i = xcb_xv_query_image_attributes_reply (conn,
258 xcb_xv_query_image_attributes (conn, port, f->id,
259 width, height), NULL);
263 if (i->width != width || i->height != height)
265 msg_Warn (vd, "incompatible size %ux%u -> %"PRIu32"x%"PRIu32,
266 fmt->i_width, fmt->i_height,
267 i->width, i->height);
268 var_Create (vd->p_libvlc, "xvideo-resolution-error", VLC_VAR_BOOL);
269 if (!var_GetBool (vd->p_libvlc, "xvideo-resolution-error"))
271 dialog_FatalWait (vd, _("Video acceleration not available"),
272 _("Your video output acceleration driver does not support "
273 "the required resolution: %ux%u pixels. The maximum "
274 "supported resolution is %"PRIu32"x%"PRIu32".\n"
275 "Video output acceleration will be disabled. However, "
276 "rendering videos with overly large resolution "
277 "may cause severe performance degration."),
278 width, height, i->width, i->height);
279 var_SetBool (vd->p_libvlc, "xvideo-resolution-error", true);
292 * Probe the X server.
294 static int Open (vlc_object_t *obj)
296 vout_display_t *vd = (vout_display_t *)obj;
297 vout_display_sys_t *p_sys = malloc (sizeof (*p_sys));
304 xcb_connection_t *conn;
305 const xcb_screen_t *screen;
307 p_sys->embed = GetWindow (vd, &conn, &screen, &depth);
308 if (p_sys->embed == NULL)
318 if (!CheckXVideo (vd, conn))
320 msg_Warn (vd, "Please enable XVideo 2.2 for faster video display");
324 p_sys->window = xcb_generate_id (conn);
326 /* Cache adaptors infos */
327 xcb_xv_query_adaptors_reply_t *adaptors =
328 xcb_xv_query_adaptors_reply (conn,
329 xcb_xv_query_adaptors (conn, p_sys->embed->xid), NULL);
330 if (adaptors == NULL)
333 int forced_adaptor = var_CreateGetInteger (obj, "xvideo-adaptor");
336 video_format_t fmt = vd->fmt;
337 bool found_adaptor = false;
339 xcb_xv_adaptor_info_iterator_t it;
340 for (it = xcb_xv_query_adaptors_info_iterator (adaptors);
341 it.rem > 0 && !found_adaptor;
342 xcb_xv_adaptor_info_next (&it))
344 const xcb_xv_adaptor_info_t *a = it.data;
347 if (forced_adaptor != -1 && forced_adaptor != 0)
353 if (!(a->type & XCB_XV_TYPE_IMAGE_MASK))
356 xcb_xv_list_image_formats_reply_t *r =
357 xcb_xv_list_image_formats_reply (conn,
358 xcb_xv_list_image_formats (conn, a->base_id), NULL);
362 /* Look for an image format */
363 const xcb_xv_image_format_info_t *xfmt = NULL;
364 const vlc_fourcc_t *chromas, chromas_default[] = {
373 if (vlc_fourcc_IsYUV (fmt.i_chroma))
374 chromas = vlc_fourcc_GetYUVFallback (fmt.i_chroma);
376 chromas = chromas_default;
379 for (size_t i = 0; chromas[i]; i++)
384 if ((chroma == VLC_CODEC_I420 || chroma == VLC_CODEC_YV12)
386 && !memcmp ("OMAP", xcb_xv_adaptor_info_name (a), 4))
388 msg_Dbg (vd, "skipping slow I420 format");
389 continue; /* OMAP framebuffer sucks at YUV 4:2:0 */
392 xfmt = FindFormat (vd, chroma, &fmt, a->base_id, r, &p_sys->att);
395 p_sys->id = xfmt->id;
396 fmt.i_chroma = chroma;
397 if (xfmt->type == XCB_XV_IMAGE_FORMAT_INFO_TYPE_RGB)
399 fmt.i_rmask = xfmt->red_mask;
400 fmt.i_gmask = xfmt->green_mask;
401 fmt.i_bmask = xfmt->blue_mask;
407 if (xfmt == NULL) /* No acceptable image formats */
411 for (unsigned i = 0; i < a->num_ports; i++)
413 xcb_xv_port_t port = a->base_id + i;
414 xcb_xv_grab_port_reply_t *gr =
415 xcb_xv_grab_port_reply (conn,
416 xcb_xv_grab_port (conn, port, XCB_CURRENT_TIME), NULL);
417 uint8_t result = gr ? gr->result : 0xff;
425 msg_Dbg (vd, "cannot grab port %"PRIu32, port);
427 continue; /* No usable port */
430 /* Found port - initialize selected format */
431 name = strndup (xcb_xv_adaptor_info_name (a), a->name_size);
434 msg_Dbg (vd, "using adaptor %s", name);
437 msg_Dbg (vd, "using port %"PRIu32, p_sys->port);
438 msg_Dbg (vd, "using image format 0x%"PRIx32, p_sys->id);
440 /* Look for an X11 visual, create a window */
441 xcb_xv_format_t *f = xcb_xv_adaptor_info_formats (a);
442 for (uint_fast16_t i = a->num_formats; i > 0; i--, f++)
444 if (f->depth != depth)
445 continue; /* this would fail anyway */
447 const uint32_t mask =
448 /* XCB_CW_EVENT_MASK */
449 XCB_EVENT_MASK_VISIBILITY_CHANGE;
452 c = xcb_create_window_checked (conn, f->depth, p_sys->window,
453 p_sys->embed->xid, 0, 0, 1, 1, 0,
454 XCB_WINDOW_CLASS_INPUT_OUTPUT, f->visual,
455 XCB_CW_EVENT_MASK, &mask);
457 if (!CheckError (vd, conn, "cannot create X11 window", c))
459 msg_Dbg (vd, "using X11 visual ID 0x%"PRIx32
460 " (depth: %"PRIu8")", f->visual, f->depth);
461 msg_Dbg (vd, "using X11 window 0x%08"PRIx32, p_sys->window);
465 xcb_xv_ungrab_port (conn, p_sys->port, XCB_CURRENT_TIME);
466 continue; /* No workable XVideo format (visual/depth) */
469 found_adaptor = true;
475 msg_Err (vd, "no available XVideo adaptor");
480 xcb_map_window (conn, p_sys->window);
482 vout_display_place_t place;
484 vout_display_PlacePicture (&place, &vd->source, vd->cfg, false);
485 p_sys->width = place.width;
486 p_sys->height = place.height;
489 const uint32_t values[] = {
490 place.x, place.y, place.width, place.height };
491 xcb_configure_window (conn, p_sys->window,
492 XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y |
493 XCB_CONFIG_WINDOW_WIDTH |
494 XCB_CONFIG_WINDOW_HEIGHT,
497 p_sys->visible = false;
499 /* Create graphic context */
500 p_sys->gc = xcb_generate_id (conn);
501 xcb_create_gc (conn, p_sys->gc, p_sys->window, 0, NULL);
502 msg_Dbg (vd, "using X11 graphic context 0x%08"PRIx32, p_sys->gc);
505 p_sys->cursor = CreateBlankCursor (conn, screen);
507 CheckSHM (obj, conn, &p_sys->shm);
510 vout_display_info_t info = vd->info;
511 info.has_pictures_invalid = false;
513 /* Setup vout_display_t once everything is fine */
519 vd->display = Display;
520 vd->control = Control;
524 vout_display_SendEventFullscreen (vd, false);
525 unsigned width, height;
526 if (!GetWindowSize (p_sys->embed, conn, &width, &height))
527 vout_display_SendEventDisplaySize (vd, width, height, false);
538 * Disconnect from the X server.
540 static void Close (vlc_object_t *obj)
542 vout_display_t *vd = (vout_display_t *)obj;
543 vout_display_sys_t *p_sys = vd->sys;
547 for (unsigned i = 0; i < MAX_PICTURES; i++)
549 picture_resource_t *res = &p_sys->resource[i];
551 if (!res->p->p_pixels)
553 PictureResourceFree (res, NULL);
555 picture_pool_Delete (p_sys->pool);
559 xcb_disconnect (p_sys->conn);
560 vout_display_DeleteWindow (vd, p_sys->embed);
565 * Return a direct buffer
567 static picture_t *Get (vout_display_t *vd)
569 vout_display_sys_t *p_sys = vd->sys;
573 picture_t *pic = picture_New (vd->fmt.i_chroma, p_sys->att->width,
574 p_sys->att->height, 0);
578 memset (p_sys->resource, 0, sizeof(p_sys->resource));
580 const uint32_t *offsets =
581 xcb_xv_query_image_attributes_offsets (p_sys->att);
582 p_sys->data_size = p_sys->att->data_size;
585 picture_t *pic_array[MAX_PICTURES];
586 for (count = 0; count < MAX_PICTURES; count++)
588 picture_resource_t *res = &p_sys->resource[count];
590 for (int i = 0; i < pic->i_planes; i++)
592 res->p[i].i_lines = pic->p[i].i_lines; /* FIXME seems wrong*/
593 res->p[i].i_pitch = pic->p[i].i_pitch;
595 if (PictureResourceAlloc (vd, res, p_sys->att->data_size,
596 p_sys->conn, p_sys->shm))
599 /* Allocate further planes as specified by XVideo */
600 /* We assume that offsets[0] is zero */
601 for (int i = 1; i < pic->i_planes; i++)
602 res->p[i].p_pixels = res->p[0].p_pixels + offsets[i];
603 if (vd->fmt.i_chroma == VLC_CODEC_YV12)
604 { /* YVU: swap U and V planes */
605 uint8_t *buf = res->p[2].p_pixels;
606 res->p[2].p_pixels = res->p[1].p_pixels;
607 res->p[1].p_pixels = buf;
610 pic_array[count] = picture_NewFromResource (&vd->fmt, res);
611 if (!pic_array[count])
613 PictureResourceFree (res, p_sys->conn);
614 memset (res, 0, sizeof(*res));
618 picture_Release (pic);
623 p_sys->pool = picture_pool_New (count, pic_array);
626 /* TODO release picture resources */
629 /* FIXME should also do it in case of error ? */
630 xcb_flush (p_sys->conn);
633 return picture_pool_Get (p_sys->pool);
637 * Sends an image to the X server.
639 static void Display (vout_display_t *vd, picture_t *pic)
641 vout_display_sys_t *p_sys = vd->sys;
642 xcb_shm_seg_t segment = pic->p_sys->segment;
643 xcb_void_cookie_t ck;
648 ck = xcb_xv_shm_put_image_checked (p_sys->conn, p_sys->port,
649 p_sys->window, p_sys->gc, segment, p_sys->id, 0,
650 /* Src: */ vd->source.i_x_offset,
651 vd->source.i_y_offset,
652 vd->source.i_visible_width,
653 vd->source.i_visible_height,
654 /* Dst: */ 0, 0, p_sys->width, p_sys->height,
655 /* Memory: */ pic->p->i_pitch / pic->p->i_pixel_pitch,
656 pic->p->i_lines, false);
658 ck = xcb_xv_put_image_checked (p_sys->conn, p_sys->port, p_sys->window,
659 p_sys->gc, p_sys->id,
660 vd->source.i_x_offset,
661 vd->source.i_y_offset,
662 vd->source.i_visible_width,
663 vd->source.i_visible_height,
664 0, 0, p_sys->width, p_sys->height,
665 pic->p->i_pitch / pic->p->i_pixel_pitch,
667 p_sys->data_size, pic->p->p_pixels);
669 /* Wait for reply. See x11.c for rationale. */
670 xcb_generic_error_t *e = xcb_request_check (p_sys->conn, ck);
673 msg_Dbg (vd, "%s: X11 error %d", "cannot put image", e->error_code);
677 picture_Release (pic);
680 static int Control (vout_display_t *vd, int query, va_list ap)
682 vout_display_sys_t *p_sys = vd->sys;
686 case VOUT_DISPLAY_CHANGE_FULLSCREEN:
688 const vout_display_cfg_t *c = va_arg (ap, const vout_display_cfg_t *);
689 return vout_window_SetFullScreen (p_sys->embed, c->is_fullscreen);
692 case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:
693 case VOUT_DISPLAY_CHANGE_DISPLAY_FILLED:
694 case VOUT_DISPLAY_CHANGE_ZOOM:
695 case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT:
696 case VOUT_DISPLAY_CHANGE_SOURCE_CROP:
698 const vout_display_cfg_t *cfg;
699 const video_format_t *source;
700 bool is_forced = false;
702 if (query == VOUT_DISPLAY_CHANGE_SOURCE_ASPECT
703 || query == VOUT_DISPLAY_CHANGE_SOURCE_CROP)
705 source = (const video_format_t *)va_arg (ap, const video_format_t *);
710 source = &vd->source;
711 cfg = (const vout_display_cfg_t*)va_arg (ap, const vout_display_cfg_t *);
712 if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE)
713 is_forced = (bool)va_arg (ap, int);
717 if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE
719 && (cfg->display.width != vd->cfg->display.width
720 ||cfg->display.height != vd->cfg->display.height)
721 && vout_window_SetSize (p_sys->embed,
723 cfg->display.height))
726 vout_display_place_t place;
727 vout_display_PlacePicture (&place, source, cfg, false);
728 p_sys->width = place.width;
729 p_sys->height = place.height;
731 /* Move the picture within the window */
732 const uint32_t values[] = { place.x, place.y,
733 place.width, place.height, };
734 xcb_configure_window (p_sys->conn, p_sys->window,
735 XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y
736 | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
738 xcb_flush (p_sys->conn);
741 case VOUT_DISPLAY_CHANGE_ON_TOP:
743 int on_top = (int)va_arg (ap, int);
744 return vout_window_SetOnTop (p_sys->embed, on_top);
747 /* Hide the mouse. It will be send when
748 * vout_display_t::info.b_hide_mouse is false */
749 case VOUT_DISPLAY_HIDE_MOUSE:
750 xcb_change_window_attributes (p_sys->conn, p_sys->embed->xid,
751 XCB_CW_CURSOR, &(uint32_t){ p_sys->cursor });
753 case VOUT_DISPLAY_RESET_PICTURES:
756 msg_Err (vd, "Unknown request in XCB vout display");
761 static void Manage (vout_display_t *vd)
763 vout_display_sys_t *p_sys = vd->sys;
765 ManageEvent (vd, p_sys->conn, &p_sys->visible);