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     picture_t      *filtered;
  49 };
  50
  51 /* Minimum number of direct pictures the video output will accept without
  52  * creating additional pictures in system memory */
  53 #ifdef OPTIMIZE_MEMORY
  54 #   define VOUT_MIN_DIRECT_PICTURES        (VOUT_MAX_PICTURES/2)
  55 #else
  56 #   define VOUT_MIN_DIRECT_PICTURES        (3*VOUT_MAX_PICTURES/4)
  57 #endif
  58
  59 /*****************************************************************************
  60  * Local prototypes
  61  *****************************************************************************/
  62 static void VoutGetDisplayCfg(vout_thread_t *,
  63                               vout_display_cfg_t *, const char *title);
  64 #ifdef WIN32
  65 static int  Forward(vlc_object_t *, char const *,
  66                     vlc_value_t, vlc_value_t, void *);
  67 #endif
  68
  69 /*****************************************************************************
  70  *
  71  *****************************************************************************/
  72 int vout_OpenWrapper(vout_thread_t *vout, const char *name)
  73 {
  74     vout_sys_t *sys;
  75
  76     msg_Dbg(vout, "Opening vout display wrapper");
  77
  78     /* */
  79     sys = malloc(sizeof(*sys));
  80     if (!sys)
  81         return VLC_ENOMEM;
  82
  83     sys->title = var_CreateGetNonEmptyString(vout, "video-title");
  84
  85     /* */
  86     video_format_t source   = vout->fmt_render;
  87     source.i_visible_width  = source.i_width;
  88     source.i_visible_height = source.i_height;
  89     source.i_x_offset       = 0;
  90     source.i_y_offset       = 0;
  91
  92     vout_display_state_t state;
  93     VoutGetDisplayCfg(vout, &state.cfg, sys->title);
  94     state.is_on_top = var_CreateGetBool(vout, "video-on-top");
  95     state.sar.num = 0;
  96     state.sar.den = 0;
  97
  98     const mtime_t double_click_timeout = 300000;
  99     const mtime_t hide_timeout = var_CreateGetInteger(vout, "mouse-hide-timeout") * 1000;
 100
 101     sys->vd = vout_NewDisplay(vout, &source, &state, name ? name : "$vout",
 102                               double_click_timeout, hide_timeout);
 103     /* If we need to video filter and it fails, then try a splitter
 104      * XXX it is a hack for now FIXME */
 105     if (name && !sys->vd)
 106         sys->vd = vout_NewSplitter(vout, &source, &state, "$vout", name,
 107                                    double_click_timeout, hide_timeout);
 108     if (!sys->vd) {
 109         free(sys->title);
 110         free(sys);
 111         return VLC_EGENERIC;
 112     }
 113
 114     /* */
 115 #ifdef WIN32
 116     var_Create(vout, "direct3d-desktop", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
 117     var_AddCallback(vout, "direct3d-desktop", Forward, NULL);
 118     var_Create(vout, "video-wallpaper", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
 119     var_AddCallback(vout, "video-wallpaper", Forward, NULL);
 120 #endif
 121
 122     /* */
 123     vout->p->p_sys = sys;
 124     vout->p->decoder_pool = NULL;
 125
 126     return VLC_SUCCESS;
 127 }
 128
 129 /*****************************************************************************
 130  *
 131  *****************************************************************************/
 132 void vout_CloseWrapper(vout_thread_t *vout)
 133 {
 134     vout_sys_t *sys = vout->p->p_sys;
 135
 136 #ifdef WIN32
 137     var_DelCallback(vout, "direct3d-desktop", Forward, NULL);
 138     var_DelCallback(vout, "video-wallpaper", Forward, NULL);
 139 #endif
 140     vout->p->decoder_pool = NULL; /* FIXME remove */
 141
 142     vout_DeleteDisplay(sys->vd, NULL);
 143     free(sys->title);
 144     free(sys );
 145 }
 146
 147 /*****************************************************************************
 148  *
 149  *****************************************************************************/
 150 int vout_InitWrapper(vout_thread_t *vout)
 151 {
 152     vout_sys_t *sys = vout->p->p_sys;
 153     vout_display_t *vd = sys->vd;
 154
 155     /* */
 156     video_format_t source = vd->source;
 157
 158     vout->fmt_out.i_chroma         = source.i_chroma;
 159     vout->fmt_out.i_width          =
 160     vout->fmt_out.i_visible_width  = source.i_width;
 161     vout->fmt_out.i_height         =
 162     vout->fmt_out.i_visible_height = source.i_height;
 163     vout->fmt_out.i_sar_num        = source.i_sar_num;
 164     vout->fmt_out.i_sar_den        = source.i_sar_den;
 165     vout->fmt_out.i_x_offset       = 0;
 166     vout->fmt_out.i_y_offset       = 0;
 167     vout->fmt_out.i_rmask          = source.i_rmask;
 168     vout->fmt_out.i_gmask          = source.i_gmask;
 169     vout->fmt_out.i_bmask          = source.i_bmask;
 170
 171     if (vout->fmt_in.i_visible_width  != source.i_visible_width ||
 172         vout->fmt_in.i_visible_height != source.i_visible_height ||
 173         vout->fmt_in.i_x_offset       != source.i_x_offset ||
 174         vout->fmt_in.i_y_offset       != source.i_y_offset )
 175         vout->p->i_changes |= VOUT_CROP_CHANGE;
 176
 177 #warning "vout_InitWrapper: vout_SetWindowState should NOT be called there"
 178     if (vout->p->b_on_top)
 179         vout_SetWindowState(vd, VOUT_WINDOW_STATE_ABOVE);
 180
 181     /* XXX For non dr case, the current vout implementation force us to
 182      * create at most 1 direct picture (otherwise the buffers will be kept
 183      * referenced even through the Init/End.
 184      */
 185     sys->use_dr = !vout_IsDisplayFiltered(vd);
 186     const bool allow_dr = !vd->info.has_pictures_invalid && sys->use_dr;
 187
 188     picture_pool_t *display_pool = vout_display_Pool(vd, allow_dr ? VOUT_MAX_PICTURES : 3);
 189     if (allow_dr && picture_pool_GetSize(display_pool) >= VOUT_MIN_DIRECT_PICTURES) {
 190         vout->p->decoder_pool = display_pool;
 191         vout->p->display_pool = display_pool;
 192         vout->p->is_decoder_pool_slow = vd->info.is_slow;
 193     } else if (!vout->p->decoder_pool) {
 194         vout->p->decoder_pool = picture_pool_NewFromFormat(&source, VOUT_MAX_PICTURES);
 195         if (sys->use_dr)
 196             vout->p->display_pool = display_pool;
 197         else
 198             vout->p->display_pool = picture_pool_Reserve(vout->p->decoder_pool, 1);;
 199         vout->p->is_decoder_pool_slow = false;
 200     }
 201     vout->p->private_pool = picture_pool_Reserve(vout->p->decoder_pool, 3); /* XXX 2 for filter, 1 for SPU */
 202     sys->filtered = NULL;
 203     return VLC_SUCCESS;
 204 }
 205
 206 /*****************************************************************************
 207  *
 208  *****************************************************************************/
 209 void vout_EndWrapper(vout_thread_t *vout)
 210 {
 211     vout_sys_t *sys = vout->p->p_sys;
 212
 213     assert(!sys->filtered);
 214     if (vout->p->private_pool)
 215         picture_pool_Delete(vout->p->private_pool);
 216
 217     if (vout->p->decoder_pool != vout->p->display_pool) {
 218         if (!sys->use_dr)
 219             picture_pool_Delete(vout->p->display_pool);
 220         picture_pool_Delete(vout->p->decoder_pool);
 221     }
 222 }
 223
 224 /*****************************************************************************
 225  *
 226  *****************************************************************************/
 227 int vout_ManageWrapper(vout_thread_t *vout)
 228 {
 229     vout_sys_t *sys = vout->p->p_sys;
 230     vout_display_t *vd = sys->vd;
 231
 232     while (vout->p->i_changes & (VOUT_FULLSCREEN_CHANGE |
 233                               VOUT_ASPECT_CHANGE |
 234                               VOUT_ZOOM_CHANGE |
 235                               VOUT_SCALE_CHANGE |
 236                               VOUT_ON_TOP_CHANGE |
 237                               VOUT_CROP_CHANGE)) {
 238         /* */
 239         if (vout->p->i_changes & VOUT_FULLSCREEN_CHANGE) {
 240             vout->p->b_fullscreen = !vout->p->b_fullscreen;
 241
 242             var_SetBool(vout, "fullscreen", vout->p->b_fullscreen);
 243             vout_SetDisplayFullscreen(vd, vout->p->b_fullscreen);
 244             vout->p->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 245         }
 246         if (vout->p->i_changes & VOUT_ASPECT_CHANGE) {
 247             vout->fmt_out.i_sar_num = vout->fmt_in.i_sar_num;
 248             vout->fmt_out.i_sar_den = vout->fmt_in.i_sar_den;
 249
 250             vout_SetDisplayAspect(vd, vout->fmt_in.i_sar_num, vout->fmt_in.i_sar_den);
 251
 252             vout->p->i_changes &= ~VOUT_ASPECT_CHANGE;
 253         }
 254         if (vout->p->i_changes & VOUT_ZOOM_CHANGE) {
 255             const float zoom = var_GetFloat(vout, "scale");
 256
 257             unsigned den = ZOOM_FP_FACTOR;
 258             unsigned num = den * zoom;
 259             if (num < (ZOOM_FP_FACTOR+9) / 10)
 260                 num = (ZOOM_FP_FACTOR+9) / 10;
 261             else if (num > ZOOM_FP_FACTOR * 10)
 262                 num = ZOOM_FP_FACTOR * 10;
 263
 264             vout_SetDisplayZoom(vd, num, den);
 265
 266             vout->p->i_changes &= ~VOUT_ZOOM_CHANGE;
 267         }
 268         if (vout->p->i_changes & VOUT_SCALE_CHANGE) {
 269             const bool is_display_filled = var_GetBool(vout, "autoscale");
 270
 271             vout_SetDisplayFilled(vd, is_display_filled);
 272
 273             vout->p->i_changes &= ~VOUT_SCALE_CHANGE;
 274         }
 275         if (vout->p->i_changes & VOUT_ON_TOP_CHANGE) {
 276             vout_SetWindowState(vd, vout->p->b_on_top
 277                 ? VOUT_WINDOW_STATE_ABOVE
 278                 : VOUT_WINDOW_STATE_NORMAL);
 279
 280             vout->p->i_changes &= ~VOUT_ON_TOP_CHANGE;
 281         }
 282         if (vout->p->i_changes & VOUT_CROP_CHANGE) {
 283             const video_format_t crop = vout->fmt_in;
 284             const video_format_t org = vout->fmt_render;
 285             /* FIXME because of rounding errors, the reconstructed ratio is wrong */
 286             unsigned num = 0;
 287             unsigned den = 0;
 288             if (crop.i_x_offset == org.i_x_offset &&
 289                 crop.i_visible_width == org.i_visible_width &&
 290                 crop.i_y_offset == org.i_y_offset + (org.i_visible_height - crop.i_visible_height)/2) {
 291                 vlc_ureduce(&num, &den,
 292                             crop.i_visible_width * crop.i_sar_num,
 293                             crop.i_visible_height * crop.i_sar_den, 0);
 294             } else if (crop.i_y_offset == org.i_y_offset &&
 295                        crop.i_visible_height == org.i_visible_height &&
 296                        crop.i_x_offset == org.i_x_offset + (org.i_visible_width - crop.i_visible_width)/2) {
 297                 vlc_ureduce(&num, &den,
 298                             crop.i_visible_width * crop.i_sar_num,
 299                             crop.i_visible_height * crop.i_sar_den, 0);
 300             }
 301             vout_SetDisplayCrop(vd, num, den,
 302                                 crop.i_x_offset, crop.i_y_offset,
 303                                 crop.i_visible_width, crop.i_visible_height);
 304             vout->p->i_changes &= ~VOUT_CROP_CHANGE;
 305         }
 306
 307     }
 308
 309     bool reset_display_pool = sys->use_dr && vout_AreDisplayPicturesInvalid(vd);
 310     vout_ManageDisplay(vd, !sys->use_dr || reset_display_pool);
 311
 312     if (reset_display_pool)
 313         vout->p->display_pool = vout_display_Pool(vd, 3);
 314
 315     return VLC_SUCCESS;
 316 }
 317
 318 /*****************************************************************************
 319  * Render
 320  *****************************************************************************/
 321 void vout_RenderWrapper(vout_thread_t *vout, picture_t *picture)
 322 {
 323     vout_sys_t *sys = vout->p->p_sys;
 324     vout_display_t *vd = sys->vd;
 325
 326     assert(vout_IsDisplayFiltered(vd) == !sys->use_dr);
 327
 328     if (sys->use_dr) {
 329         vout_display_Prepare(vd, picture);
 330     } else {
 331         sys->filtered = vout_FilterDisplay(vd, picture);
 332         if (sys->filtered)
 333             vout_display_Prepare(vd, sys->filtered);
 334     }
 335 }
 336
 337 /*****************************************************************************
 338  *
 339  *****************************************************************************/
 340 void vout_DisplayWrapper(vout_thread_t *vout, picture_t *picture)
 341 {
 342     vout_sys_t *sys = vout->p->p_sys;
 343     vout_display_t *vd = sys->vd;
 344
 345      vout_display_Display(vd, sys->filtered ? sys->filtered : picture);
 346      sys->filtered = NULL;
 347 }
 348
 349 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 350 {
 351     /* Load configuration */
 352     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 353     cfg->display.title = title;
 354     const int display_width = var_CreateGetInteger(vout, "width");
 355     const int display_height = var_CreateGetInteger(vout, "height");
 356     cfg->display.width   = display_width > 0  ? display_width  : 0;
 357     cfg->display.height  = display_height > 0 ? display_height : 0;
 358     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 359     cfg->display.sar.num = 1; /* TODO monitor AR */
 360     cfg->display.sar.den = 1;
 361     unsigned zoom_den = 1000;
 362     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 363     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 364     cfg->zoom.num = zoom_num;
 365     cfg->zoom.den = zoom_den;
 366     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 367     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 368     const int align_mask = var_CreateGetInteger(vout, "align");
 369     if (align_mask & 0x1)
 370         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 371     else if (align_mask & 0x2)
 372         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 373     if (align_mask & 0x4)
 374         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_TOP;
 375     else if (align_mask & 0x8)
 376         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_BOTTOM;
 377 }
 378
 379 #ifdef WIN32
 380 static int Forward(vlc_object_t *object, char const *var,
 381                    vlc_value_t oldval, vlc_value_t newval, void *data)
 382 {
 383     vout_thread_t *vout = (vout_thread_t*)object;
 384
 385     VLC_UNUSED(oldval);
 386     VLC_UNUSED(data);
 387     return var_Set(vout->p->p_sys->vd, var, newval);
 388 }
 389 #endif