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
  39 /*****************************************************************************
  40  *
  41  *****************************************************************************/
  42 struct vout_sys_t {
  43     char           *title;
  44     vout_display_t *vd;
  45     bool           use_dr;
  46 };
  47
  48 struct picture_sys_t {
  49     picture_t *direct;
  50 };
  51
  52 /*****************************************************************************
  53  * Local prototypes
  54  *****************************************************************************/
  55 static int  Init   (vout_thread_t *);
  56 static void End    (vout_thread_t *);
  57 static int  Manage (vout_thread_t *);
  58 static void Render (vout_thread_t *, picture_t *);
  59 static void Display(vout_thread_t *, picture_t *);
  60
  61 static void VoutGetDisplayCfg(vout_thread_t *,
  62                               vout_display_cfg_t *, const char *title);
  63 #ifdef WIN32
  64 static int  Forward(vlc_object_t *, char const *,
  65                     vlc_value_t, vlc_value_t, void *);
  66 #endif
  67
  68 /*****************************************************************************
  69  *
  70  *****************************************************************************/
  71 int vout_OpenWrapper(vout_thread_t *vout, const char *name)
  72 {
  73     vout_sys_t *sys;
  74
  75     msg_Dbg(vout, "Opening vout display wrapper");
  76
  77     /* */
  78     sys = malloc(sizeof(*sys));
  79     if (!sys)
  80         return VLC_ENOMEM;
  81
  82     sys->title = var_CreateGetNonEmptyString(vout, "video-title");
  83
  84     /* */
  85     video_format_t source   = vout->fmt_render;
  86     source.i_visible_width  = source.i_width;
  87     source.i_visible_height = source.i_height;
  88     source.i_x_offset       = 0;
  89     source.i_y_offset       = 0;
  90
  91     vout_display_state_t state;
  92     VoutGetDisplayCfg(vout, &state.cfg, sys->title);
  93     state.is_on_top = var_CreateGetBool(vout, "video-on-top");
  94     state.sar.num = 0;
  95     state.sar.den = 0;
  96
  97     const mtime_t double_click_timeout = 300000;
  98     const mtime_t hide_timeout = var_CreateGetInteger(vout, "mouse-hide-timeout") * 1000;
  99
 100     sys->vd = vout_NewDisplay(vout, &source, &state, name ? name : "$vout",
 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->pf_init    = Init;
 118     vout->pf_end     = End;
 119     vout->pf_manage  = Manage;
 120     vout->pf_render  = Render;
 121     vout->pf_display = Display;
 122     vout->pf_control = NULL;
 123     vout->p_sys      = sys;
 124
 125     return VLC_SUCCESS;
 126 }
 127
 128 /*****************************************************************************
 129  *
 130  *****************************************************************************/
 131 void vout_CloseWrapper(vout_thread_t *vout)
 132 {
 133     vout_sys_t *sys = vout->p_sys;
 134
 135 #ifdef WIN32
 136     var_DelCallback(vout, "direct3d-desktop", Forward, NULL);
 137     var_DelCallback(vout, "video-wallpaper", Forward, NULL);
 138 #endif
 139     vout_DeleteDisplay(sys->vd, NULL);
 140     free(sys->title);
 141     free(sys );
 142 }
 143
 144 /*****************************************************************************
 145  *
 146  *****************************************************************************/
 147 static int Init(vout_thread_t *vout)
 148 {
 149     vout_sys_t *sys = vout->p_sys;
 150     vout_display_t *vd = sys->vd;
 151
 152     /* */
 153     video_format_t source = vd->source;
 154
 155     vout->output.i_chroma = source.i_chroma;
 156     vout->output.i_width  = source.i_width;
 157     vout->output.i_height = source.i_height;
 158     vout->output.i_aspect = (int64_t)source.i_sar_num * source.i_width * VOUT_ASPECT_FACTOR / source.i_sar_den / source.i_height;
 159     vout->output.i_rmask  = source.i_rmask;
 160     vout->output.i_gmask  = source.i_gmask;
 161     vout->output.i_bmask  = source.i_bmask;
 162     vout->output.pf_setpalette = NULL; /* FIXME What to do ? Seems unused anyway */
 163
 164     /* also set fmt_out (completly broken API) */
 165     vout->fmt_out.i_chroma         = vout->output.i_chroma;
 166     vout->fmt_out.i_width          =
 167     vout->fmt_out.i_visible_width  = vout->output.i_width;
 168     vout->fmt_out.i_height         =
 169     vout->fmt_out.i_visible_height = vout->output.i_height;
 170     vout->fmt_out.i_sar_num        = vout->output.i_aspect * vout->output.i_height;
 171     vout->fmt_out.i_sar_den        = VOUT_ASPECT_FACTOR    * vout->output.i_width;
 172     vout->fmt_out.i_x_offset       = 0;
 173     vout->fmt_out.i_y_offset       = 0;
 174
 175     if (vout->fmt_in.i_visible_width  != source.i_visible_width ||
 176         vout->fmt_in.i_visible_height != source.i_visible_height ||
 177         vout->fmt_in.i_x_offset       != source.i_x_offset ||
 178         vout->fmt_in.i_y_offset       != source.i_y_offset )
 179         vout->i_changes |= VOUT_CROP_CHANGE;
 180
 181     if (vout->b_on_top)
 182         vout_SetWindowState(vd, VOUT_WINDOW_STATE_ABOVE);
 183
 184     /* XXX For non dr case, the current vout implementation force us to
 185      * create at most 1 direct picture (otherwise the buffers will be kept
 186      * referenced even through the Init/End.
 187      */
 188     sys->use_dr = !vout_IsDisplayFiltered(vd);
 189     const bool allow_dr = !vd->info.has_pictures_invalid && sys->use_dr;
 190     const int picture_max = allow_dr ? VOUT_MAX_PICTURES : 1;
 191     for (vout->output.i_pictures = 0;
 192             vout->output.i_pictures < picture_max;
 193                 vout->output.i_pictures++) {
 194         /* Find an empty picture slot */
 195         picture_t *picture = NULL;
 196         for (int index = 0; index < VOUT_MAX_PICTURES; index++) {
 197             if (vout->p_picture[index].i_status == FREE_PICTURE) {
 198                 picture = &vout->p_picture[index];
 199                 break;
 200             }
 201         }
 202         if (!picture)
 203             break;
 204         memset(picture, 0, sizeof(*picture));
 205
 206         picture->p_sys = malloc(sizeof(*picture->p_sys));
 207
 208         if (sys->use_dr) {
 209             picture_pool_t *pool = vout_display_Pool(vd, picture_max);
 210             if (!pool)
 211                 break;
 212             picture_t *direct = picture_pool_Get(pool);
 213             if (!direct)
 214                 break;
 215             picture->format = direct->format;
 216             picture->i_planes = direct->i_planes;
 217             for (int i = 0; i < direct->i_planes; i++)
 218                 picture->p[i] = direct->p[i];
 219             picture->b_slow = vd->info.is_slow;
 220
 221             picture->p_sys->direct = direct;
 222         } else {
 223             vout_AllocatePicture(VLC_OBJECT(vd), picture,
 224                                  vd->source.i_chroma,
 225                                  vd->source.i_width, vd->source.i_height,
 226                                  vd->source.i_sar_num, vd->source.i_sar_den);
 227             if (!picture->i_planes)
 228                 break;
 229             picture->p_sys->direct = NULL;
 230         }
 231         picture->i_status = DESTROYED_PICTURE;
 232         picture->i_type    = DIRECT_PICTURE;
 233
 234         vout->output.pp_picture[vout->output.i_pictures] = picture;
 235     }
 236     return VLC_SUCCESS;
 237 }
 238
 239 /*****************************************************************************
 240  *
 241  *****************************************************************************/
 242 static void End(vout_thread_t *vout)
 243 {
 244     vout_sys_t *sys = vout->p_sys;
 245
 246     for (int i = 0; i < VOUT_MAX_PICTURES; i++) {
 247         picture_t *picture = &vout->p_picture[i];
 248
 249         if (picture->i_type != DIRECT_PICTURE)
 250             continue;
 251
 252         if (picture->p_sys->direct)
 253             picture_Release(picture->p_sys->direct);
 254         if (!sys->use_dr)
 255             free(picture->p_data_orig);
 256         free(picture->p_sys);
 257
 258         picture->i_status = FREE_PICTURE;
 259     }
 260     if (sys->use_dr && vout_AreDisplayPicturesInvalid(sys->vd))
 261         vout_ManageDisplay(sys->vd, true);
 262 }
 263
 264 /*****************************************************************************
 265  *
 266  *****************************************************************************/
 267 static int Manage(vout_thread_t *vout)
 268 {
 269     vout_sys_t *sys = vout->p_sys;
 270     vout_display_t *vd = sys->vd;
 271
 272     while (vout->i_changes & (VOUT_FULLSCREEN_CHANGE |
 273                               VOUT_ASPECT_CHANGE |
 274                               VOUT_ZOOM_CHANGE |
 275                               VOUT_SCALE_CHANGE |
 276                               VOUT_ON_TOP_CHANGE |
 277                               VOUT_CROP_CHANGE)) {
 278         /* */
 279         if (vout->i_changes & VOUT_FULLSCREEN_CHANGE) {
 280             vout->b_fullscreen = !vout->b_fullscreen;
 281
 282             var_SetBool(vout, "fullscreen", vout->b_fullscreen);
 283             vout_SetDisplayFullscreen(vd, vout->b_fullscreen);
 284             vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 285         }
 286         if (vout->i_changes & VOUT_ASPECT_CHANGE) {
 287             vout->output.i_aspect   = (int64_t)vout->fmt_in.i_sar_num * vout->fmt_in.i_width * VOUT_ASPECT_FACTOR /
 288                                       vout->fmt_in.i_sar_den / vout->fmt_in.i_height;
 289             vout->fmt_out.i_sar_num = vout->fmt_in.i_sar_num;
 290             vout->fmt_out.i_sar_den = vout->fmt_in.i_sar_den;
 291
 292             vout_SetDisplayAspect(vd, vout->fmt_in.i_sar_num, vout->fmt_in.i_sar_den);
 293
 294             vout->i_changes &= ~VOUT_ASPECT_CHANGE;
 295         }
 296         if (vout->i_changes & VOUT_ZOOM_CHANGE) {
 297             const float zoom = var_GetFloat(vout, "scale");
 298
 299             unsigned den = ZOOM_FP_FACTOR;
 300             unsigned num = den * zoom;
 301             if (num < (ZOOM_FP_FACTOR+9) / 10)
 302                 num = (ZOOM_FP_FACTOR+9) / 10;
 303             else if (num > ZOOM_FP_FACTOR * 10)
 304                 num = ZOOM_FP_FACTOR * 10;
 305
 306             vout_SetDisplayZoom(vd, num, den);
 307
 308             vout->i_changes &= ~VOUT_ZOOM_CHANGE;
 309         }
 310         if (vout->i_changes & VOUT_SCALE_CHANGE) {
 311             const bool is_display_filled = var_GetBool(vout, "autoscale");
 312
 313             vout_SetDisplayFilled(vd, is_display_filled);
 314
 315             vout->i_changes &= ~VOUT_SCALE_CHANGE;
 316         }
 317         if (vout->i_changes & VOUT_ON_TOP_CHANGE) {
 318             vout_SetWindowState(vd, vout->b_on_top
 319                 ? VOUT_WINDOW_STATE_ABOVE
 320                 : VOUT_WINDOW_STATE_NORMAL);
 321
 322             vout->i_changes &= ~VOUT_ON_TOP_CHANGE;
 323         }
 324         if (vout->i_changes & VOUT_CROP_CHANGE) {
 325             const video_format_t crop = vout->fmt_in;
 326             const video_format_t org = vout->fmt_render;
 327             /* FIXME because of rounding errors, the reconstructed ratio is wrong */
 328             unsigned num = 0;
 329             unsigned den = 0;
 330             if (crop.i_x_offset == org.i_x_offset &&
 331                 crop.i_visible_width == org.i_visible_width &&
 332                 crop.i_y_offset == org.i_y_offset + (org.i_visible_height - crop.i_visible_height)/2) {
 333                 vlc_ureduce(&num, &den,
 334                             crop.i_visible_width * crop.i_sar_num,
 335                             crop.i_visible_height * crop.i_sar_den, 0);
 336             } else if (crop.i_y_offset == org.i_y_offset &&
 337                        crop.i_visible_height == org.i_visible_height &&
 338                        crop.i_x_offset == org.i_x_offset + (org.i_visible_width - crop.i_visible_width)/2) {
 339                 vlc_ureduce(&num, &den,
 340                             crop.i_visible_width * crop.i_sar_num,
 341                             crop.i_visible_height * crop.i_sar_den, 0);
 342             }
 343             vout_SetDisplayCrop(vd, num, den,
 344                                 crop.i_x_offset, crop.i_y_offset,
 345                                 crop.i_visible_width, crop.i_visible_height);
 346             vout->i_changes &= ~VOUT_CROP_CHANGE;
 347         }
 348
 349     }
 350
 351     if (sys->use_dr && vout_AreDisplayPicturesInvalid(vd)) {
 352         vout->i_changes |= VOUT_PICTURE_BUFFERS_CHANGE;
 353     }
 354     vout_ManageDisplay(vd, !sys->use_dr);
 355     return VLC_SUCCESS;
 356 }
 357
 358 /*****************************************************************************
 359  * Render
 360  *****************************************************************************/
 361 static void Render(vout_thread_t *vout, picture_t *picture)
 362 {
 363     vout_sys_t *sys = vout->p_sys;
 364     vout_display_t *vd = sys->vd;
 365
 366     assert(sys->use_dr || !picture->p_sys->direct);
 367     assert(vout_IsDisplayFiltered(vd) == !sys->use_dr);
 368
 369     if (sys->use_dr) {
 370         assert(picture->p_sys->direct);
 371         vout_display_Prepare(vd, picture->p_sys->direct);
 372     } else {
 373         picture_t *direct = picture->p_sys->direct = vout_FilterDisplay(vd, picture);
 374         if (direct) {
 375             vout_display_Prepare(vd, direct);
 376         }
 377     }
 378 }
 379
 380 /*****************************************************************************
 381  *
 382  *****************************************************************************/
 383 static void Display(vout_thread_t *vout, picture_t *picture)
 384 {
 385     vout_sys_t *sys = vout->p_sys;
 386     vout_display_t *vd = sys->vd;
 387
 388     picture_t *direct = picture->p_sys->direct;
 389     if (!direct)
 390         return;
 391
 392     /* XXX This is a hack that will work with current vout_display_t modules */
 393     if (sys->use_dr)
 394         picture_Hold(direct);
 395
 396      vout_display_Display(vd, direct);
 397
 398      if (sys->use_dr) {
 399          for (int i = 0; i < picture->i_planes; i++) {
 400              picture->p[i].p_pixels = direct->p[i].p_pixels;
 401              picture->p[i].i_pitch  = direct->p[i].i_pitch;
 402              picture->p[i].i_lines  = direct->p[i].i_lines;
 403          }
 404      } else {
 405          picture->p_sys->direct = NULL;
 406      }
 407 }
 408
 409 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 410 {
 411     /* Load configuration */
 412     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 413     cfg->display.title = title;
 414     const int display_width = var_CreateGetInteger(vout, "width");
 415     const int display_height = var_CreateGetInteger(vout, "height");
 416     cfg->display.width   = display_width > 0  ? display_width  : 0;
 417     cfg->display.height  = display_height > 0 ? display_height : 0;
 418     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 419     cfg->display.sar.num = 1; /* TODO monitor AR */
 420     cfg->display.sar.den = 1;
 421     unsigned zoom_den = 1000;
 422     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 423     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 424     cfg->zoom.num = zoom_num;
 425     cfg->zoom.den = zoom_den;
 426     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 427     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 428     const int align_mask = var_CreateGetInteger(vout, "align");
 429     if (align_mask & 0x1)
 430         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 431     else if (align_mask & 0x2)
 432         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 433     if (align_mask & 0x4)
 434         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_TOP;
 435     else if (align_mask & 0x8)
 436         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_BOTTOM;
 437 }
 438
 439 #ifdef WIN32
 440 static int Forward(vlc_object_t *object, char const *var,
 441                    vlc_value_t oldval, vlc_value_t newval, void *data)
 442 {
 443     vout_thread_t *vout = (vout_thread_t*)object;
 444
 445     VLC_UNUSED(oldval);
 446     VLC_UNUSED(data);
 447     return var_Set(vout->p_sys->vd, var, newval);
 448 }
 449 #endif