git.sesse.net Git - vlc/blob - src/video_output/vout_wrapper.c

   1 /*****************************************************************************
   2  * vout_display.c: "vout display" -> "video output" wrapper
   3  *****************************************************************************
   4  * Copyright (C) 2009 Laurent Aimar
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program 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.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <vlc_common.h>
  32 #include <vlc_plugin.h>
  33 #include <vlc_vout_display.h>
  34 #include <vlc_vout_wrapper.h>
  35 #include <vlc_vout.h>
  36 #include <assert.h>
  37 #include "vout_internal.h"
  38 #include "display.h"
  39
  40 /*****************************************************************************
  41  *
  42  *****************************************************************************/
  43 struct vout_sys_t {
  44     char           *title;
  45     vout_display_t *vd;
  46     bool           use_dr;
  47 };
  48
  49 struct picture_sys_t {
  50     picture_t *direct;
  51 };
  52
  53 /*****************************************************************************
  54  * Local prototypes
  55  *****************************************************************************/
  56 static void VoutGetDisplayCfg(vout_thread_t *,
  57                               vout_display_cfg_t *, const char *title);
  58 #ifdef WIN32
  59 static int  Forward(vlc_object_t *, char const *,
  60                     vlc_value_t, vlc_value_t, void *);
  61 #endif
  62
  63 /*****************************************************************************
  64  *
  65  *****************************************************************************/
  66 int vout_OpenWrapper(vout_thread_t *vout, const char *name)
  67 {
  68     vout_sys_t *sys;
  69
  70     msg_Dbg(vout, "Opening vout display wrapper");
  71
  72     /* */
  73     sys = malloc(sizeof(*sys));
  74     if (!sys)
  75         return VLC_ENOMEM;
  76
  77     sys->title = var_CreateGetNonEmptyString(vout, "video-title");
  78
  79     /* */
  80     video_format_t source   = vout->fmt_render;
  81     source.i_visible_width  = source.i_width;
  82     source.i_visible_height = source.i_height;
  83     source.i_x_offset       = 0;
  84     source.i_y_offset       = 0;
  85
  86     vout_display_state_t state;
  87     VoutGetDisplayCfg(vout, &state.cfg, sys->title);
  88     state.is_on_top = var_CreateGetBool(vout, "video-on-top");
  89     state.sar.num = 0;
  90     state.sar.den = 0;
  91
  92     const mtime_t double_click_timeout = 300000;
  93     const mtime_t hide_timeout = var_CreateGetInteger(vout, "mouse-hide-timeout") * 1000;
  94
  95     sys->vd = vout_NewDisplay(vout, &source, &state, name ? name : "$vout",
  96                               double_click_timeout, hide_timeout);
  97     /* If we need to video filter and it fails, then try a splitter
  98      * XXX it is a hack for now FIXME */
  99     if (name && !sys->vd)
 100         sys->vd = vout_NewSplitter(vout, &source, &state, "$vout", name,
 101                                    double_click_timeout, hide_timeout);
 102     if (!sys->vd) {
 103         free(sys->title);
 104         free(sys);
 105         return VLC_EGENERIC;
 106     }
 107
 108     /* */
 109 #ifdef WIN32
 110     var_Create(vout, "direct3d-desktop", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
 111     var_AddCallback(vout, "direct3d-desktop", Forward, NULL);
 112     var_Create(vout, "video-wallpaper", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
 113     var_AddCallback(vout, "video-wallpaper", Forward, NULL);
 114 #endif
 115
 116     /* */
 117     vout->p->p_sys = sys;
 118
 119     return VLC_SUCCESS;
 120 }
 121
 122 /*****************************************************************************
 123  *
 124  *****************************************************************************/
 125 void vout_CloseWrapper(vout_thread_t *vout)
 126 {
 127     vout_sys_t *sys = vout->p->p_sys;
 128
 129 #ifdef WIN32
 130     var_DelCallback(vout, "direct3d-desktop", Forward, NULL);
 131     var_DelCallback(vout, "video-wallpaper", Forward, NULL);
 132 #endif
 133     vout_DeleteDisplay(sys->vd, NULL);
 134     free(sys->title);
 135     free(sys );
 136 }
 137
 138 /*****************************************************************************
 139  *
 140  *****************************************************************************/
 141 int vout_InitWrapper(vout_thread_t *vout)
 142 {
 143     vout_sys_t *sys = vout->p->p_sys;
 144     vout_display_t *vd = sys->vd;
 145
 146     /* */
 147     video_format_t source = vd->source;
 148
 149     vout->output.i_chroma = source.i_chroma;
 150     vout->output.i_width  = source.i_width;
 151     vout->output.i_height = source.i_height;
 152     vout->output.i_aspect = (int64_t)source.i_sar_num * source.i_width * VOUT_ASPECT_FACTOR / source.i_sar_den / source.i_height;
 153
 154     /* also set fmt_out (completly broken API) */
 155     vout->fmt_out.i_chroma         = vout->output.i_chroma;
 156     vout->fmt_out.i_width          =
 157     vout->fmt_out.i_visible_width  = vout->output.i_width;
 158     vout->fmt_out.i_height         =
 159     vout->fmt_out.i_visible_height = vout->output.i_height;
 160     vout->fmt_out.i_sar_num        = vout->output.i_aspect * vout->output.i_height;
 161     vout->fmt_out.i_sar_den        = VOUT_ASPECT_FACTOR    * vout->output.i_width;
 162     vout->fmt_out.i_x_offset       = 0;
 163     vout->fmt_out.i_y_offset       = 0;
 164     vout->fmt_out.i_rmask          = source.i_rmask;
 165     vout->fmt_out.i_gmask          = source.i_gmask;
 166     vout->fmt_out.i_bmask          = source.i_bmask;
 167
 168     if (vout->fmt_in.i_visible_width  != source.i_visible_width ||
 169         vout->fmt_in.i_visible_height != source.i_visible_height ||
 170         vout->fmt_in.i_x_offset       != source.i_x_offset ||
 171         vout->fmt_in.i_y_offset       != source.i_y_offset )
 172         vout->i_changes |= VOUT_CROP_CHANGE;
 173
 174     if (vout->b_on_top)
 175         vout_SetWindowState(vd, VOUT_WINDOW_STATE_ABOVE);
 176
 177     /* XXX For non dr case, the current vout implementation force us to
 178      * create at most 1 direct picture (otherwise the buffers will be kept
 179      * referenced even through the Init/End.
 180      */
 181     sys->use_dr = !vout_IsDisplayFiltered(vd);
 182     const bool allow_dr = !vd->info.has_pictures_invalid && sys->use_dr;
 183     const int picture_max = allow_dr ? VOUT_MAX_PICTURES : 1;
 184     for (vout->output.i_pictures = 0;
 185             vout->output.i_pictures < picture_max;
 186                 vout->output.i_pictures++) {
 187         /* Find an empty picture slot */
 188         picture_t *picture = NULL;
 189         for (int index = 0; index < VOUT_MAX_PICTURES; index++) {
 190             if (vout->p_picture[index].i_status == FREE_PICTURE) {
 191                 picture = &vout->p_picture[index];
 192                 break;
 193             }
 194         }
 195         if (!picture)
 196             break;
 197         memset(picture, 0, sizeof(*picture));
 198
 199         picture->p_sys = malloc(sizeof(*picture->p_sys));
 200
 201         if (sys->use_dr) {
 202             picture_pool_t *pool = vout_display_Pool(vd, picture_max);
 203             if (!pool)
 204                 break;
 205             picture_t *direct = picture_pool_Get(pool);
 206             if (!direct)
 207                 break;
 208             picture->format = direct->format;
 209             picture->i_planes = direct->i_planes;
 210             for (int i = 0; i < direct->i_planes; i++)
 211                 picture->p[i] = direct->p[i];
 212             picture->b_slow = vd->info.is_slow;
 213
 214             picture->p_sys->direct = direct;
 215         } else {
 216             vout_AllocatePicture(VLC_OBJECT(vd), picture,
 217                                  vd->source.i_chroma,
 218                                  vd->source.i_width, vd->source.i_height,
 219                                  vd->source.i_sar_num, vd->source.i_sar_den);
 220             if (!picture->i_planes)
 221                 break;
 222             picture->p_sys->direct = NULL;
 223         }
 224         picture->i_status = DESTROYED_PICTURE;
 225         picture->i_type    = DIRECT_PICTURE;
 226
 227         vout->output.pp_picture[vout->output.i_pictures] = picture;
 228     }
 229     return VLC_SUCCESS;
 230 }
 231
 232 /*****************************************************************************
 233  *
 234  *****************************************************************************/
 235 void vout_EndWrapper(vout_thread_t *vout)
 236 {
 237     vout_sys_t *sys = vout->p->p_sys;
 238
 239     for (int i = 0; i < VOUT_MAX_PICTURES; i++) {
 240         picture_t *picture = &vout->p_picture[i];
 241
 242         if (picture->i_type != DIRECT_PICTURE)
 243             continue;
 244
 245         if (picture->p_sys->direct)
 246             picture_Release(picture->p_sys->direct);
 247         if (!sys->use_dr)
 248             free(picture->p_data_orig);
 249         free(picture->p_sys);
 250
 251         picture->i_status = FREE_PICTURE;
 252     }
 253     if (sys->use_dr && vout_AreDisplayPicturesInvalid(sys->vd))
 254         vout_ManageDisplay(sys->vd, true);
 255 }
 256
 257 /*****************************************************************************
 258  *
 259  *****************************************************************************/
 260 int vout_ManageWrapper(vout_thread_t *vout)
 261 {
 262     vout_sys_t *sys = vout->p->p_sys;
 263     vout_display_t *vd = sys->vd;
 264
 265     while (vout->i_changes & (VOUT_FULLSCREEN_CHANGE |
 266                               VOUT_ASPECT_CHANGE |
 267                               VOUT_ZOOM_CHANGE |
 268                               VOUT_SCALE_CHANGE |
 269                               VOUT_ON_TOP_CHANGE |
 270                               VOUT_CROP_CHANGE)) {
 271         /* */
 272         if (vout->i_changes & VOUT_FULLSCREEN_CHANGE) {
 273             vout->b_fullscreen = !vout->b_fullscreen;
 274
 275             var_SetBool(vout, "fullscreen", vout->b_fullscreen);
 276             vout_SetDisplayFullscreen(vd, vout->b_fullscreen);
 277             vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 278         }
 279         if (vout->i_changes & VOUT_ASPECT_CHANGE) {
 280             vout->output.i_aspect   = (int64_t)vout->fmt_in.i_sar_num * vout->fmt_in.i_width * VOUT_ASPECT_FACTOR /
 281                                       vout->fmt_in.i_sar_den / vout->fmt_in.i_height;
 282             vout->fmt_out.i_sar_num = vout->fmt_in.i_sar_num;
 283             vout->fmt_out.i_sar_den = vout->fmt_in.i_sar_den;
 284
 285             vout_SetDisplayAspect(vd, vout->fmt_in.i_sar_num, vout->fmt_in.i_sar_den);
 286
 287             vout->i_changes &= ~VOUT_ASPECT_CHANGE;
 288         }
 289         if (vout->i_changes & VOUT_ZOOM_CHANGE) {
 290             const float zoom = var_GetFloat(vout, "scale");
 291
 292             unsigned den = ZOOM_FP_FACTOR;
 293             unsigned num = den * zoom;
 294             if (num < (ZOOM_FP_FACTOR+9) / 10)
 295                 num = (ZOOM_FP_FACTOR+9) / 10;
 296             else if (num > ZOOM_FP_FACTOR * 10)
 297                 num = ZOOM_FP_FACTOR * 10;
 298
 299             vout_SetDisplayZoom(vd, num, den);
 300
 301             vout->i_changes &= ~VOUT_ZOOM_CHANGE;
 302         }
 303         if (vout->i_changes & VOUT_SCALE_CHANGE) {
 304             const bool is_display_filled = var_GetBool(vout, "autoscale");
 305
 306             vout_SetDisplayFilled(vd, is_display_filled);
 307
 308             vout->i_changes &= ~VOUT_SCALE_CHANGE;
 309         }
 310         if (vout->i_changes & VOUT_ON_TOP_CHANGE) {
 311             vout_SetWindowState(vd, vout->b_on_top
 312                 ? VOUT_WINDOW_STATE_ABOVE
 313                 : VOUT_WINDOW_STATE_NORMAL);
 314
 315             vout->i_changes &= ~VOUT_ON_TOP_CHANGE;
 316         }
 317         if (vout->i_changes & VOUT_CROP_CHANGE) {
 318             const video_format_t crop = vout->fmt_in;
 319             const video_format_t org = vout->fmt_render;
 320             /* FIXME because of rounding errors, the reconstructed ratio is wrong */
 321             unsigned num = 0;
 322             unsigned den = 0;
 323             if (crop.i_x_offset == org.i_x_offset &&
 324                 crop.i_visible_width == org.i_visible_width &&
 325                 crop.i_y_offset == org.i_y_offset + (org.i_visible_height - crop.i_visible_height)/2) {
 326                 vlc_ureduce(&num, &den,
 327                             crop.i_visible_width * crop.i_sar_num,
 328                             crop.i_visible_height * crop.i_sar_den, 0);
 329             } else if (crop.i_y_offset == org.i_y_offset &&
 330                        crop.i_visible_height == org.i_visible_height &&
 331                        crop.i_x_offset == org.i_x_offset + (org.i_visible_width - crop.i_visible_width)/2) {
 332                 vlc_ureduce(&num, &den,
 333                             crop.i_visible_width * crop.i_sar_num,
 334                             crop.i_visible_height * crop.i_sar_den, 0);
 335             }
 336             vout_SetDisplayCrop(vd, num, den,
 337                                 crop.i_x_offset, crop.i_y_offset,
 338                                 crop.i_visible_width, crop.i_visible_height);
 339             vout->i_changes &= ~VOUT_CROP_CHANGE;
 340         }
 341
 342     }
 343
 344     if (sys->use_dr && vout_AreDisplayPicturesInvalid(vd)) {
 345         vout->i_changes |= VOUT_PICTURE_BUFFERS_CHANGE;
 346     }
 347     vout_ManageDisplay(vd, !sys->use_dr);
 348     return VLC_SUCCESS;
 349 }
 350
 351 /*****************************************************************************
 352  * Render
 353  *****************************************************************************/
 354 void vout_RenderWrapper(vout_thread_t *vout, picture_t *picture)
 355 {
 356     vout_sys_t *sys = vout->p->p_sys;
 357     vout_display_t *vd = sys->vd;
 358
 359     assert(sys->use_dr || !picture->p_sys->direct);
 360     assert(vout_IsDisplayFiltered(vd) == !sys->use_dr);
 361
 362     if (sys->use_dr) {
 363         assert(picture->p_sys->direct);
 364         vout_display_Prepare(vd, picture->p_sys->direct);
 365     } else {
 366         picture_t *direct = picture->p_sys->direct = vout_FilterDisplay(vd, picture);
 367         if (direct) {
 368             vout_display_Prepare(vd, direct);
 369         }
 370     }
 371 }
 372
 373 /*****************************************************************************
 374  *
 375  *****************************************************************************/
 376 void vout_DisplayWrapper(vout_thread_t *vout, picture_t *picture)
 377 {
 378     vout_sys_t *sys = vout->p->p_sys;
 379     vout_display_t *vd = sys->vd;
 380
 381     picture_t *direct = picture->p_sys->direct;
 382     if (!direct)
 383         return;
 384
 385     /* XXX This is a hack that will work with current vout_display_t modules */
 386     if (sys->use_dr)
 387         picture_Hold(direct);
 388
 389      vout_display_Display(vd, direct);
 390
 391      if (sys->use_dr) {
 392          for (int i = 0; i < picture->i_planes; i++) {
 393              picture->p[i].p_pixels = direct->p[i].p_pixels;
 394              picture->p[i].i_pitch  = direct->p[i].i_pitch;
 395              picture->p[i].i_lines  = direct->p[i].i_lines;
 396          }
 397      } else {
 398          picture->p_sys->direct = NULL;
 399      }
 400 }
 401
 402 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 403 {
 404     /* Load configuration */
 405     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 406     cfg->display.title = title;
 407     const int display_width = var_CreateGetInteger(vout, "width");
 408     const int display_height = var_CreateGetInteger(vout, "height");
 409     cfg->display.width   = display_width > 0  ? display_width  : 0;
 410     cfg->display.height  = display_height > 0 ? display_height : 0;
 411     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 412     cfg->display.sar.num = 1; /* TODO monitor AR */
 413     cfg->display.sar.den = 1;
 414     unsigned zoom_den = 1000;
 415     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 416     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 417     cfg->zoom.num = zoom_num;
 418     cfg->zoom.den = zoom_den;
 419     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 420     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 421     const int align_mask = var_CreateGetInteger(vout, "align");
 422     if (align_mask & 0x1)
 423         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 424     else if (align_mask & 0x2)
 425         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 426     if (align_mask & 0x4)
 427         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_TOP;
 428     else if (align_mask & 0x8)
 429         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_BOTTOM;
 430 }
 431
 432 #ifdef WIN32
 433 static int Forward(vlc_object_t *object, char const *var,
 434                    vlc_value_t oldval, vlc_value_t newval, void *data)
 435 {
 436     vout_thread_t *vout = (vout_thread_t*)object;
 437
 438     VLC_UNUSED(oldval);
 439     VLC_UNUSED(data);
 440     return var_Set(vout->p_sys->vd, var, newval);
 441 }
 442 #endif