1 /*****************************************************************************
2 * sdl.c: SDL video output display method
3 *****************************************************************************
4 * Copyright (C) 1998-2009 VLC authors and VideoLAN
7 * Authors: Samuel Hocevar <sam@zoy.org>
8 * Pierre Baillet <oct@zoy.org>
9 * Arnaud de Bossoreille de Ribou <bozo@via.ecp.fr>
10 * Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU Lesser General Public License as published by
14 * the Free Software Foundation; either version 2.1 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU Lesser General Public License for more details.
22 * You should have received a copy of the GNU Lesser General Public License
23 * along with this program; if not, write to the Free Software Foundation,
24 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
34 #include <vlc_common.h>
35 #include <vlc_plugin.h>
36 #include <vlc_vout_display.h>
37 #include <vlc_picture_pool.h>
43 #if !defined(_WIN32) && !defined(__OS2__)
44 # ifdef X_DISPLAY_MISSING
45 # error Xlib required due to XInitThreads
47 # include <vlc_xlib.h>
50 /*****************************************************************************
52 *****************************************************************************/
53 static int Open (vlc_object_t *);
54 static void Close(vlc_object_t *);
56 #define CHROMA_TEXT N_("SDL chroma format")
57 #define CHROMA_LONGTEXT N_(\
58 "Force the SDL renderer to use a specific chroma format instead of " \
59 "trying to improve performances by using the most efficient one.")
63 set_category(CAT_VIDEO)
64 set_subcategory(SUBCAT_VIDEO_VOUT)
65 set_description(N_("Simple DirectMedia Layer video output"))
66 set_capability("vout display", 70)
68 add_string("sdl-chroma", NULL, CHROMA_TEXT, CHROMA_LONGTEXT, true)
69 add_obsolete_string("sdl-video-driver") /* obsolete since 1.1.0 */
70 set_callbacks(Open, Close)
71 #if defined(__i386__) || defined(__x86_64__)
72 /* On i386, SDL is linked against svgalib */
73 cannot_unload_broken_library()
78 /*****************************************************************************
80 *****************************************************************************/
81 static picture_pool_t *Pool (vout_display_t *, unsigned);
82 static void PictureDisplay(vout_display_t *, picture_t *, subpicture_t *);
83 static int Control(vout_display_t *, int, va_list);
84 static void Manage(vout_display_t *);
87 static int ConvertKey(SDLKey);
90 static vlc_mutex_t sdl_lock = VLC_STATIC_MUTEX;
93 struct vout_display_sys_t {
94 vout_display_place_t place;
98 uint32_t display_flags;
100 unsigned int desktop_width;
101 unsigned int desktop_height;
104 SDL_Overlay *overlay;
108 picture_pool_t *pool;
112 * This function initializes SDL vout method.
114 static int Open(vlc_object_t *object)
116 vout_display_t *vd = (vout_display_t *)object;
117 vout_display_sys_t *sys;
119 #if !defined(_WIN32) && !defined(__OS2__)
120 if (!vlc_xlib_init (object))
124 /* XXX: check for conflicts with the SDL audio output */
125 vlc_mutex_lock(&sdl_lock);
127 /* Check if SDL video module has been initialized */
128 if (SDL_WasInit(SDL_INIT_VIDEO) != 0) {
129 vlc_mutex_unlock(&sdl_lock);
133 vd->sys = sys = calloc(1, sizeof(*sys));
135 vlc_mutex_unlock(&sdl_lock);
140 int sdl_flags = SDL_INIT_VIDEO;
142 /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
143 sdl_flags |= SDL_INIT_EVENTTHREAD;
145 /* In debug mode you may want vlc to dump a core instead of staying stuck */
146 sdl_flags |= SDL_INIT_NOPARACHUTE;
148 /* Initialize library */
149 if (SDL_Init(sdl_flags) < 0) {
150 vlc_mutex_unlock(&sdl_lock);
152 msg_Err(vd, "cannot initialize SDL (%s)", SDL_GetError());
156 vlc_mutex_unlock(&sdl_lock);
158 /* Translate keys into unicode */
159 SDL_EnableUNICODE(1);
161 /* Get the desktop resolution */
162 /* FIXME: SDL has a problem with virtual desktop */
163 sys->desktop_width = SDL_GetVideoInfo()->current_w;
164 sys->desktop_height = SDL_GetVideoInfo()->current_h;
168 video_format_ApplyRotation(&fmt, &vd->fmt);
171 vout_display_info_t info = vd->info;
173 /* Set main window's size */
176 if (vd->cfg->is_fullscreen) {
177 display_width = sys->desktop_width;
178 display_height = sys->desktop_height;
180 display_width = vd->cfg->display.width;
181 display_height = vd->cfg->display.height;
184 /* Initialize flags and cursor */
185 sys->display_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
186 sys->display_flags |= vd->cfg->is_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
188 sys->display_bpp = SDL_VideoModeOK(display_width, display_height,
189 16, sys->display_flags);
190 if (sys->display_bpp == 0) {
191 msg_Err(vd, "no video mode available");
194 vout_display_DeleteWindow(vd, NULL);
196 sys->display = SDL_SetVideoMode(display_width, display_height,
197 sys->display_bpp, sys->display_flags);
199 msg_Err(vd, "cannot set video mode");
203 /* We keep the surface locked forever */
204 SDL_LockSurface(sys->display);
207 vlc_fourcc_t forced_chroma = 0;
208 char *psz_chroma = var_InheritString(vd, "sdl-chroma");
210 forced_chroma = vlc_fourcc_GetCodecFromString(VIDEO_ES, psz_chroma);
212 msg_Dbg(vd, "Forcing chroma to 0x%.8x (%4.4s)",
213 forced_chroma, (const char*)&forced_chroma);
217 /* Try to open an overlay if requested */
219 const bool is_overlay = var_InheritBool(vd, "overlay");
226 { VLC_CODEC_YV12, SDL_YV12_OVERLAY },
227 { VLC_CODEC_I420, SDL_IYUV_OVERLAY },
228 { VLC_CODEC_YUYV, SDL_YUY2_OVERLAY },
229 { VLC_CODEC_UYVY, SDL_UYVY_OVERLAY },
230 { VLC_CODEC_YVYU, SDL_YVYU_OVERLAY },
234 const vlc_fourcc_t forced_chromas[] = {
237 const vlc_fourcc_t *fallback_chromas =
238 vlc_fourcc_GetYUVFallback(fmt.i_chroma);
239 const vlc_fourcc_t *chromas = forced_chroma ? forced_chromas : fallback_chromas;
241 for (int pass = forced_chroma ? 1 : 0; pass < 2 && !sys->overlay; pass++) {
242 for (int i = 0; chromas[i] != 0; i++) {
243 const vlc_fourcc_t vlc = chromas[i];
246 for (int j = 0; vlc_to_sdl[j].vlc != 0 && !sdl; j++) {
247 if (vlc_to_sdl[j].vlc == vlc)
248 sdl = vlc_to_sdl[j].sdl;
253 sys->overlay = SDL_CreateYUVOverlay(fmt.i_width, fmt.i_height,
255 if (sys->overlay && !sys->overlay->hw_overlay && pass == 0) {
256 /* Ignore non hardware overlay surface in first pass */
257 SDL_FreeYUVOverlay(sys->overlay);
261 /* We keep the surface locked forever */
262 SDL_LockYUVOverlay(sys->overlay);
265 sys->is_uv_swapped = vlc_fourcc_AreUVPlanesSwapped(fmt.i_chroma,
267 if (sys->is_uv_swapped)
268 fmt.i_chroma = vd->fmt.i_chroma;
274 msg_Warn(vd, "SDL overlay disabled by the user");
278 vout_display_cfg_t place_cfg = *vd->cfg;
279 place_cfg.display.width = display_width;
280 place_cfg.display.height = display_height;
281 vout_display_PlacePicture(&sys->place, &vd->source, &place_cfg, !sys->overlay);
283 /* If no overlay, fallback to software output */
286 switch (sys->display->format->BitsPerPixel) {
288 fmt.i_chroma = VLC_CODEC_RGB8;
291 fmt.i_chroma = VLC_CODEC_RGB15;
294 fmt.i_chroma = VLC_CODEC_RGB16;
297 fmt.i_chroma = VLC_CODEC_RGB24;
300 fmt.i_chroma = VLC_CODEC_RGB32;
303 msg_Err(vd, "unknown screen depth %i",
304 sys->display->format->BitsPerPixel);
308 /* All we have is an RGB image with square pixels */
309 fmt.i_width = display_width;
310 fmt.i_height = display_height;
311 fmt.i_rmask = sys->display->format->Rmask;
312 fmt.i_gmask = sys->display->format->Gmask;
313 fmt.i_bmask = sys->display->format->Bmask;
315 info.has_pictures_invalid = true;
318 if (vd->cfg->display.title)
319 SDL_WM_SetCaption(vd->cfg->display.title,
320 vd->cfg->display.title);
321 else if (!sys->overlay)
322 SDL_WM_SetCaption(VOUT_TITLE " (software RGB SDL output)",
323 VOUT_TITLE " (software RGB SDL output)");
324 else if (sys->overlay->hw_overlay)
325 SDL_WM_SetCaption(VOUT_TITLE " (hardware YUV SDL output)",
326 VOUT_TITLE " (hardware YUV SDL output)");
328 SDL_WM_SetCaption(VOUT_TITLE " (software YUV SDL output)",
329 VOUT_TITLE " (software YUV SDL output)");
332 SDL_EventState(SDL_KEYUP, SDL_IGNORE); /* ignore keys up */
334 /* Setup vout_display now that everything is fine */
340 vd->display = PictureDisplay;
341 vd->control = Control;
345 vout_display_SendEventDisplaySize(vd, display_width, display_height, vd->cfg->is_fullscreen);
349 msg_Err(vd, "cannot set up SDL (%s)", SDL_GetError());
352 SDL_UnlockSurface(sys->display);
353 SDL_FreeSurface(sys->display);
356 vlc_mutex_lock(&sdl_lock);
357 SDL_QuitSubSystem(SDL_INIT_VIDEO);
358 vlc_mutex_unlock(&sdl_lock);
365 * Close a SDL video output
367 static void Close(vlc_object_t *object)
369 vout_display_t *vd = (vout_display_t *)object;
370 vout_display_sys_t *sys = vd->sys;
373 picture_pool_Delete(sys->pool);
376 SDL_LockYUVOverlay(sys->overlay);
377 SDL_FreeYUVOverlay(sys->overlay);
379 SDL_UnlockSurface (sys->display);
380 SDL_FreeSurface(sys->display);
382 vlc_mutex_lock(&sdl_lock);
383 SDL_QuitSubSystem(SDL_INIT_VIDEO);
384 vlc_mutex_unlock(&sdl_lock);
390 * Return a pool of direct buffers
392 static picture_pool_t *Pool(vout_display_t *vd, unsigned count)
394 vout_display_sys_t *sys = vd->sys;
398 picture_resource_t rsc;
400 memset(&rsc, 0, sizeof(rsc));
403 SDL_Overlay *ol = sys->overlay;
405 for (int i = 0; i < ol->planes; i++) {
406 rsc.p[i].p_pixels = ol->pixels[ i > 0 && sys->is_uv_swapped ? (3-i) : i];
407 rsc.p[i].i_pitch = ol->pitches[i > 0 && sys->is_uv_swapped ? (3-i) : i];
408 rsc.p[i].i_lines = ol->h;
409 if (ol->format == SDL_YV12_OVERLAY ||
410 ol->format == SDL_IYUV_OVERLAY)
411 rsc.p[i].i_lines /= 2;
415 const int x = sys->place.x;
416 const int y = sys->place.y;
418 SDL_Surface *sf = sys->display;
419 SDL_FillRect(sf, NULL, 0);
421 assert(x >= 0 && y >= 0);
422 rsc.p[0].p_pixels = (uint8_t*)sf->pixels + y * sf->pitch + x * ((sf->format->BitsPerPixel + 7) / 8);
423 rsc.p[0].i_pitch = sf->pitch;
424 rsc.p[0].i_lines = vd->fmt.i_height;
427 picture_t *picture = picture_NewFromResource(&vd->fmt, &rsc);;
431 sys->pool = picture_pool_New(1, &picture);
440 static void PictureDisplay(vout_display_t *vd, picture_t *p_pic, subpicture_t *p_subpicture)
442 vout_display_sys_t *sys = vd->sys;
446 disp.x = sys->place.x;
447 disp.y = sys->place.y;
448 disp.w = sys->place.width;
449 disp.h = sys->place.height;
451 SDL_UnlockYUVOverlay(sys->overlay);
452 SDL_DisplayYUVOverlay(sys->overlay , &disp);
453 SDL_LockYUVOverlay(sys->overlay);
455 SDL_Flip(sys->display);
458 picture_Release(p_pic);
459 VLC_UNUSED(p_subpicture);
464 * Control for vout display
466 static int Control(vout_display_t *vd, int query, va_list args)
468 vout_display_sys_t *sys = vd->sys;
472 case VOUT_DISPLAY_HIDE_MOUSE:
476 case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE: {
477 const vout_display_cfg_t *cfg = va_arg(args, const vout_display_cfg_t *);
480 sys->display = SDL_SetVideoMode(cfg->display.width,
482 sys->display_bpp, sys->display_flags);
484 sys->display = SDL_SetVideoMode(vd->cfg->display.width,
485 vd->cfg->display.height,
486 sys->display_bpp, sys->display_flags);
490 vout_display_PlacePicture(&sys->place, &vd->source, cfg, !sys->overlay);
492 vout_display_SendEventPicturesInvalid(vd);
495 case VOUT_DISPLAY_CHANGE_FULLSCREEN: {
496 vout_display_cfg_t cfg = *va_arg(args, const vout_display_cfg_t *);
499 sys->display_flags &= ~(SDL_FULLSCREEN | SDL_RESIZABLE);
500 sys->display_flags |= cfg.is_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
502 if (cfg.is_fullscreen) {
503 cfg.display.width = sys->desktop_width;
504 cfg.display.height = sys->desktop_height;
508 sys->display = SDL_SetVideoMode(cfg.display.width, cfg.display.height,
509 sys->display_bpp, sys->display_flags);
511 vout_display_PlacePicture(&sys->place, &vd->source, &cfg, !sys->overlay);
513 vout_display_SendEventDisplaySize(vd, cfg.display.width, cfg.display.height, cfg.is_fullscreen);
516 case VOUT_DISPLAY_CHANGE_ZOOM:
517 case VOUT_DISPLAY_CHANGE_DISPLAY_FILLED:
518 case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT: {
519 const vout_display_cfg_t *cfg;
520 const video_format_t *source;
522 if (query == VOUT_DISPLAY_CHANGE_SOURCE_ASPECT) {
523 source = va_arg(args, const video_format_t *);
526 source = &vd->source;
527 cfg = va_arg(args, const vout_display_cfg_t *);
530 sys->display = SDL_SetVideoMode(cfg->display.width, cfg->display.height,
531 sys->display_bpp, sys->display_flags);
533 vout_display_PlacePicture(&sys->place, source, cfg, !sys->overlay);
535 vout_display_SendEventPicturesInvalid(vd);
540 case VOUT_DISPLAY_RESET_PICTURES: {
542 assert(!sys->overlay);
546 picture_pool_Delete(sys->pool);
549 vout_display_PlacePicture(&sys->place, &vd->source, vd->cfg, !sys->overlay);
552 vd->fmt.i_width = sys->place.width;
553 vd->fmt.i_height = sys->place.height;
557 case VOUT_DISPLAY_CHANGE_SOURCE_CROP:
558 case VOUT_DISPLAY_CHANGE_WINDOW_STATE:
559 /* I don't think it is possible to support with SDL:
566 msg_Err(vd, "Unsupported query in vout display SDL");
572 * Proccess pending event
574 static void Manage(vout_display_t *vd)
576 vout_display_sys_t *sys = vd->sys;
580 while (SDL_PollEvent(&event)) {
581 switch (event.type) {
583 vout_display_SendEventClose(vd);
587 /* convert the key if possible */
588 int key = ConvertKey(event.key.keysym.sym);
591 /* Find the right caracter */
592 if ((event.key.keysym.unicode & 0xff80) == 0) {
593 key = event.key.keysym.unicode & 0x7f;
594 /* FIXME: find a better solution than this
595 hack to find the right caracter */
596 if (key >= 1 && key <= 26)
598 else if (key >= 65 && key <= 90)
605 if (event.key.keysym.mod & KMOD_SHIFT)
606 key |= KEY_MODIFIER_SHIFT;
607 if (event.key.keysym.mod & KMOD_CTRL)
608 key |= KEY_MODIFIER_CTRL;
609 if (event.key.keysym.mod & KMOD_ALT)
610 key |= KEY_MODIFIER_ALT;
611 vout_display_SendEventKey(vd, key);
615 case SDL_MOUSEBUTTONDOWN:
616 case SDL_MOUSEBUTTONUP: {
617 static const struct { int sdl; int vlc; } buttons[] = {
618 { SDL_BUTTON_LEFT, MOUSE_BUTTON_LEFT },
619 { SDL_BUTTON_MIDDLE, MOUSE_BUTTON_CENTER },
620 { SDL_BUTTON_RIGHT, MOUSE_BUTTON_RIGHT },
621 { SDL_BUTTON_WHEELUP, MOUSE_BUTTON_WHEEL_UP },
622 { SDL_BUTTON_WHEELDOWN, MOUSE_BUTTON_WHEEL_DOWN },
627 for (int i = 0; buttons[i].sdl != -1; i++) {
628 if (buttons[i].sdl == event.button.button) {
629 if (event.type == SDL_MOUSEBUTTONDOWN)
630 vout_display_SendEventMousePressed(vd, buttons[i].vlc);
632 vout_display_SendEventMouseReleased(vd, buttons[i].vlc);
638 case SDL_MOUSEMOTION: {
639 if (sys->place.width <= 0 || sys->place.height <= 0)
644 vout_display_SendMouseMovedDisplayCoordinates(vd, ORIENT_NORMAL,
645 event.motion.x, event.motion.y,
650 case SDL_VIDEORESIZE:
651 vout_display_SendEventDisplaySize(vd, event.resize.w, event.resize.h, vd->cfg->is_fullscreen);
661 static const struct {
665 } sdlkeys_to_vlckeys[] = {
675 { SDLK_F10, KEY_F10 },
676 { SDLK_F11, KEY_F11 },
677 { SDLK_F12, KEY_F12 },
679 { SDLK_RETURN, KEY_ENTER },
680 { SDLK_KP_ENTER, KEY_ENTER },
682 { SDLK_ESCAPE, KEY_ESC },
684 { SDLK_MENU, KEY_MENU },
685 { SDLK_LEFT, KEY_LEFT },
686 { SDLK_RIGHT, KEY_RIGHT },
688 { SDLK_DOWN, KEY_DOWN },
690 { SDLK_HOME, KEY_HOME },
691 { SDLK_END, KEY_END },
692 { SDLK_PAGEUP, KEY_PAGEUP },
693 { SDLK_PAGEDOWN, KEY_PAGEDOWN },
695 { SDLK_INSERT, KEY_INSERT },
696 { SDLK_DELETE, KEY_DELETE },
697 /*TODO: find a equivalent for SDL
698 { , KEY_MEDIA_NEXT_TRACK }
699 { , KEY_MEDIA_PREV_TRACK }
700 { , KEY_VOLUME_MUTE }
701 { , KEY_VOLUME_DOWN }
703 { , KEY_MEDIA_PLAY_PAUSE }
704 { , KEY_MEDIA_PLAY_PAUSE }*/
709 static int ConvertKey(SDLKey sdl_key)
711 for (int i = 0; sdlkeys_to_vlckeys[i].sdl_key != 0; i++) {
712 if (sdlkeys_to_vlckeys[i].sdl_key == sdl_key)
713 return sdlkeys_to_vlckeys[i].vlckey;