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_wrapper.h>
  34 #include <vlc_vout.h>
  35 #include <assert.h>
  36 #include "vout_internal.h"
  37 #include "display.h"
  38
  39 /* Minimum number of direct pictures the video output will accept without
  40  * creating additional pictures in system memory */
  41 #ifdef OPTIMIZE_MEMORY
  42 #   define VOUT_MIN_DIRECT_PICTURES        (VOUT_MAX_PICTURES/2)
  43 #else
  44 #   define VOUT_MIN_DIRECT_PICTURES        (3*VOUT_MAX_PICTURES/4)
  45 #endif
  46
  47 /*****************************************************************************
  48  * Local prototypes
  49  *****************************************************************************/
  50 static void VoutGetDisplayCfg(vout_thread_t *,
  51                               vout_display_cfg_t *, const char *title);
  52 #ifdef WIN32
  53 static int  Forward(vlc_object_t *, char const *,
  54                     vlc_value_t, vlc_value_t, void *);
  55 #endif
  56
  57 /*****************************************************************************
  58  *
  59  *****************************************************************************/
  60 int vout_OpenWrapper(vout_thread_t *vout, const char *name)
  61 {
  62     vout_thread_sys_t *sys = vout->p;
  63     msg_Dbg(vout, "Opening vout display wrapper");
  64
  65     /* */
  66     sys->display.title = var_CreateGetNonEmptyString(vout, "video-title");
  67
  68     /* */
  69     video_format_t source   = vout->p->fmt_render;
  70     source.i_visible_width  = source.i_width;
  71     source.i_visible_height = source.i_height;
  72     source.i_x_offset       = 0;
  73     source.i_y_offset       = 0;
  74
  75     vout_display_state_t state;
  76     VoutGetDisplayCfg(vout, &state.cfg, sys->display.title);
  77     state.is_on_top = var_CreateGetBool(vout, "video-on-top");
  78     state.sar.num = 0;
  79     state.sar.den = 0;
  80
  81     const mtime_t double_click_timeout = 300000;
  82     const mtime_t hide_timeout = var_CreateGetInteger(vout, "mouse-hide-timeout") * 1000;
  83
  84     sys->display.vd = vout_NewDisplay(vout, &source, &state, name ? name : "$vout",
  85                                       double_click_timeout, hide_timeout);
  86     /* If we need to video filter and it fails, then try a splitter
  87      * XXX it is a hack for now FIXME */
  88     if (name && !sys->display.vd)
  89         sys->display.vd = vout_NewSplitter(vout, &source, &state, "$vout", name,
  90                                            double_click_timeout, hide_timeout);
  91     if (!sys->display.vd) {
  92         free(sys->display.title);
  93         return VLC_EGENERIC;
  94     }
  95
  96     /* */
  97 #ifdef WIN32
  98     var_Create(vout, "direct3d-desktop", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
  99     var_AddCallback(vout, "direct3d-desktop", Forward, NULL);
 100     var_Create(vout, "video-wallpaper", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
 101     var_AddCallback(vout, "video-wallpaper", Forward, NULL);
 102 #endif
 103
 104     /* */
 105     sys->decoder_pool = NULL;
 106
 107     return VLC_SUCCESS;
 108 }
 109
 110 /*****************************************************************************
 111  *
 112  *****************************************************************************/
 113 void vout_CloseWrapper(vout_thread_t *vout)
 114 {
 115     vout_thread_sys_t *sys = vout->p;
 116
 117 #ifdef WIN32
 118     var_DelCallback(vout, "direct3d-desktop", Forward, NULL);
 119     var_DelCallback(vout, "video-wallpaper", Forward, NULL);
 120 #endif
 121     sys->decoder_pool = NULL; /* FIXME remove */
 122
 123     vout_DeleteDisplay(sys->display.vd, NULL);
 124     free(sys->display.title);
 125 }
 126
 127 /*****************************************************************************
 128  *
 129  *****************************************************************************/
 130 int vout_InitWrapper(vout_thread_t *vout)
 131 {
 132     vout_thread_sys_t *sys = vout->p;
 133     vout_display_t *vd = sys->display.vd;
 134
 135     /* */
 136     video_format_t source = vd->source;
 137
 138     vout->p->fmt_out.i_chroma         = source.i_chroma;
 139     vout->p->fmt_out.i_width          =
 140     vout->p->fmt_out.i_visible_width  = source.i_width;
 141     vout->p->fmt_out.i_height         =
 142     vout->p->fmt_out.i_visible_height = source.i_height;
 143     if (source.i_sar_num > 0 && source.i_sar_den > 0) {
 144         vlc_ureduce(&vout->p->fmt_out.i_sar_num, &vout->p->fmt_out.i_sar_den,
 145                     source.i_sar_num, source.i_sar_den, 0);
 146     } else {
 147         vout->p->fmt_out.i_sar_num    = 1;
 148         vout->p->fmt_out.i_sar_den    = 1;
 149     }
 150     vout->p->fmt_out.i_sar_num        = source.i_sar_num;
 151     vout->p->fmt_out.i_sar_den        = source.i_sar_den;
 152     vout->p->fmt_out.i_x_offset       = 0;
 153     vout->p->fmt_out.i_y_offset       = 0;
 154     vout->p->fmt_out.i_rmask          = source.i_rmask;
 155     vout->p->fmt_out.i_gmask          = source.i_gmask;
 156     vout->p->fmt_out.i_bmask          = source.i_bmask;
 157     video_format_FixRgb(&vout->p->fmt_out);
 158
 159     if (vout->p->fmt_in.i_visible_width  != source.i_visible_width ||
 160         vout->p->fmt_in.i_visible_height != source.i_visible_height ||
 161         vout->p->fmt_in.i_x_offset       != source.i_x_offset ||
 162         vout->p->fmt_in.i_y_offset       != source.i_y_offset )
 163         sys->i_changes |= VOUT_CROP_CHANGE;
 164
 165     /* XXX For non dr case, the current vout implementation force us to
 166      * create at most 1 direct picture (otherwise the buffers will be kept
 167      * referenced even through the Init/End.
 168      */
 169     sys->display.use_dr = !vout_IsDisplayFiltered(vd);
 170     const bool allow_dr = !vd->info.has_pictures_invalid && sys->display.use_dr;
 171
 172     picture_pool_t *display_pool = vout_display_Pool(vd, allow_dr ? VOUT_MAX_PICTURES : 3);
 173     if (allow_dr && picture_pool_GetSize(display_pool) >= VOUT_MIN_DIRECT_PICTURES) {
 174         sys->decoder_pool = display_pool;
 175         sys->display_pool = display_pool;
 176         sys->is_decoder_pool_slow = vd->info.is_slow;
 177     } else if (!sys->decoder_pool) {
 178         sys->decoder_pool = picture_pool_NewFromFormat(&source, VOUT_MAX_PICTURES);
 179         if (sys->display.use_dr)
 180             sys->display_pool = display_pool;
 181         else
 182             sys->display_pool = picture_pool_Reserve(sys->decoder_pool, 1);;
 183         sys->is_decoder_pool_slow = false;
 184     }
 185     sys->private_pool = picture_pool_Reserve(sys->decoder_pool, 3); /* XXX 2 for filter, 1 for SPU */
 186     sys->display.filtered = NULL;
 187     return VLC_SUCCESS;
 188 }
 189
 190 /*****************************************************************************
 191  *
 192  *****************************************************************************/
 193 void vout_EndWrapper(vout_thread_t *vout)
 194 {
 195     vout_thread_sys_t *sys = vout->p;
 196
 197     assert(!sys->display.filtered);
 198     if (sys->private_pool)
 199         picture_pool_Delete(sys->private_pool);
 200
 201     if (sys->decoder_pool != sys->display_pool) {
 202         if (!sys->display.use_dr)
 203             picture_pool_Delete(sys->display_pool);
 204         picture_pool_Delete(sys->decoder_pool);
 205     }
 206 }
 207
 208 /*****************************************************************************
 209  *
 210  *****************************************************************************/
 211 int vout_ManageWrapper(vout_thread_t *vout)
 212 {
 213     vout_thread_sys_t *sys = vout->p;
 214     vout_display_t *vd = sys->display.vd;
 215
 216     while (sys->i_changes & (VOUT_ASPECT_CHANGE |
 217                               VOUT_CROP_CHANGE)) {
 218         /* */
 219         if (sys->i_changes & VOUT_ASPECT_CHANGE) {
 220             vout->p->fmt_out.i_sar_num = vout->p->fmt_in.i_sar_num;
 221             vout->p->fmt_out.i_sar_den = vout->p->fmt_in.i_sar_den;
 222
 223             vout_SetDisplayAspect(vd, vout->p->fmt_in.i_sar_num, vout->p->fmt_in.i_sar_den);
 224
 225             sys->i_changes &= ~VOUT_ASPECT_CHANGE;
 226         }
 227         if (sys->i_changes & VOUT_CROP_CHANGE) {
 228             const video_format_t crop = vout->p->fmt_in;
 229             const video_format_t org = vout->p->fmt_render;
 230             /* FIXME because of rounding errors, the reconstructed ratio is wrong */
 231             unsigned num = 0;
 232             unsigned den = 0;
 233             if (crop.i_x_offset == org.i_x_offset &&
 234                 crop.i_visible_width == org.i_visible_width &&
 235                 crop.i_y_offset == org.i_y_offset + (org.i_visible_height - crop.i_visible_height)/2) {
 236                 vlc_ureduce(&num, &den,
 237                             crop.i_visible_width * crop.i_sar_num,
 238                             crop.i_visible_height * crop.i_sar_den, 0);
 239             } else if (crop.i_y_offset == org.i_y_offset &&
 240                        crop.i_visible_height == org.i_visible_height &&
 241                        crop.i_x_offset == org.i_x_offset + (org.i_visible_width - crop.i_visible_width)/2) {
 242                 vlc_ureduce(&num, &den,
 243                             crop.i_visible_width * crop.i_sar_num,
 244                             crop.i_visible_height * crop.i_sar_den, 0);
 245             }
 246             vout_SetDisplayCrop(vd, num, den,
 247                                 crop.i_x_offset, crop.i_y_offset,
 248                                 crop.i_visible_width, crop.i_visible_height);
 249             sys->i_changes &= ~VOUT_CROP_CHANGE;
 250         }
 251
 252     }
 253
 254     bool reset_display_pool = sys->display.use_dr && vout_AreDisplayPicturesInvalid(vd);
 255     vout_ManageDisplay(vd, !sys->display.use_dr || reset_display_pool);
 256
 257     if (reset_display_pool)
 258         sys->display_pool = vout_display_Pool(vd, 3);
 259
 260     return VLC_SUCCESS;
 261 }
 262
 263 /*****************************************************************************
 264  * Render
 265  *****************************************************************************/
 266 void vout_RenderWrapper(vout_thread_t *vout, picture_t *picture)
 267 {
 268     vout_thread_sys_t *sys = vout->p;
 269     vout_display_t *vd = sys->display.vd;
 270
 271     assert(vout_IsDisplayFiltered(vd) == !sys->display.use_dr);
 272
 273     if (sys->display.use_dr) {
 274         vout_display_Prepare(vd, picture);
 275     } else {
 276         sys->display.filtered = vout_FilterDisplay(vd, picture);
 277         if (sys->display.filtered)
 278             vout_display_Prepare(vd, sys->display.filtered);
 279     }
 280 }
 281
 282 /*****************************************************************************
 283  *
 284  *****************************************************************************/
 285 void vout_DisplayWrapper(vout_thread_t *vout, picture_t *picture)
 286 {
 287     vout_thread_sys_t *sys = vout->p;
 288     vout_display_t *vd = sys->display.vd;
 289
 290      vout_display_Display(vd, sys->display.filtered ? sys->display.filtered : picture);
 291      sys->display.filtered = NULL;
 292 }
 293
 294 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 295 {
 296     /* Load configuration */
 297     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 298     cfg->display.title = title;
 299     const int display_width = var_CreateGetInteger(vout, "width");
 300     const int display_height = var_CreateGetInteger(vout, "height");
 301     cfg->display.width   = display_width > 0  ? display_width  : 0;
 302     cfg->display.height  = display_height > 0 ? display_height : 0;
 303     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 304     cfg->display.sar.num = 1; /* TODO monitor AR */
 305     cfg->display.sar.den = 1;
 306     unsigned zoom_den = 1000;
 307     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 308     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 309     cfg->zoom.num = zoom_num;
 310     cfg->zoom.den = zoom_den;
 311     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 312     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 313     const int align_mask = var_CreateGetInteger(vout, "align");
 314     if (align_mask & 0x1)
 315         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 316     else if (align_mask & 0x2)
 317         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 318     if (align_mask & 0x4)
 319         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_TOP;
 320     else if (align_mask & 0x8)
 321         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_BOTTOM;
 322 }
 323
 324 #ifdef WIN32
 325 static int Forward(vlc_object_t *object, char const *var,
 326                    vlc_value_t oldval, vlc_value_t newval, void *data)
 327 {
 328     vout_thread_t *vout = (vout_thread_t*)object;
 329
 330     VLC_UNUSED(oldval);
 331     VLC_UNUSED(data);
 332     return var_Set(vout->p->display.vd, var, newval);
 333 }
 334 #endif
 335