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 /*****************************************************************************
  40  * Local prototypes
  41  *****************************************************************************/
  42 #ifdef WIN32
  43 static int  Forward(vlc_object_t *, char const *,
  44                     vlc_value_t, vlc_value_t, void *);
  45 #endif
  46
  47 /*****************************************************************************
  48  *
  49  *****************************************************************************/
  50 int vout_OpenWrapper(vout_thread_t *vout,
  51                      const char *name, const vout_display_state_t *state)
  52 {
  53     vout_thread_sys_t *sys = vout->p;
  54     msg_Dbg(vout, "Opening vout display wrapper");
  55
  56     /* */
  57     sys->display.title = var_CreateGetNonEmptyString(vout, "video-title");
  58
  59     /* */
  60     video_format_t source   = vout->p->original;
  61     source.i_visible_width  = source.i_width;
  62     source.i_visible_height = source.i_height;
  63     source.i_x_offset       = 0;
  64     source.i_y_offset       = 0;
  65
  66     const mtime_t double_click_timeout = 300000;
  67     const mtime_t hide_timeout = var_CreateGetInteger(vout, "mouse-hide-timeout") * 1000;
  68
  69     sys->display.vd = vout_NewDisplay(vout, &source, state, name ? name : "$vout",
  70                                       double_click_timeout, hide_timeout);
  71     /* If we need to video filter and it fails, then try a splitter
  72      * XXX it is a hack for now FIXME */
  73     if (name && !sys->display.vd)
  74         sys->display.vd = vout_NewSplitter(vout, &source, state, "$vout", name,
  75                                            double_click_timeout, hide_timeout);
  76     if (!sys->display.vd) {
  77         free(sys->display.title);
  78         return VLC_EGENERIC;
  79     }
  80
  81     /* */
  82 #ifdef WIN32
  83     var_Create(vout, "direct3d-desktop", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
  84     var_AddCallback(vout, "direct3d-desktop", Forward, NULL);
  85     var_Create(vout, "video-wallpaper", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
  86     var_AddCallback(vout, "video-wallpaper", Forward, NULL);
  87 #endif
  88
  89     /* */
  90     sys->decoder_pool = NULL;
  91
  92     return VLC_SUCCESS;
  93 }
  94
  95 /*****************************************************************************
  96  *
  97  *****************************************************************************/
  98 void vout_CloseWrapper(vout_thread_t *vout, vout_display_state_t *state)
  99 {
 100     vout_thread_sys_t *sys = vout->p;
 101
 102 #ifdef WIN32
 103     var_DelCallback(vout, "direct3d-desktop", Forward, NULL);
 104     var_DelCallback(vout, "video-wallpaper", Forward, NULL);
 105 #endif
 106     sys->decoder_pool = NULL; /* FIXME remove */
 107
 108     vout_DeleteDisplay(sys->display.vd, state);
 109     free(sys->display.title);
 110 }
 111
 112 /*****************************************************************************
 113  *
 114  *****************************************************************************/
 115 int vout_InitWrapper(vout_thread_t *vout)
 116 {
 117     vout_thread_sys_t *sys = vout->p;
 118     vout_display_t *vd = sys->display.vd;
 119     video_format_t source = vd->source;
 120
 121     sys->display.use_dr = !vout_IsDisplayFiltered(vd);
 122     const bool allow_dr = !vd->info.has_pictures_invalid && sys->display.use_dr;
 123     const unsigned private_picture  = 3; /* XXX 2 for filter, 1 for SPU */
 124     const unsigned display_picture  = 1; /* Minimum number of display picture */
 125     const unsigned decoder_picture  = 1 + sys->dpb_size;
 126     const unsigned kept_picture     = 1; /* last displayed picture */
 127     const unsigned reserved_picture = display_picture +
 128                                       private_picture +
 129                                       kept_picture;
 130     picture_pool_t *display_pool =
 131         vout_display_Pool(vd, allow_dr ? __MAX(VOUT_MAX_PICTURES,
 132                                                reserved_picture + decoder_picture) : 3);
 133     if (allow_dr &&
 134         picture_pool_GetSize(display_pool) >= reserved_picture + decoder_picture) {
 135         sys->dpb_size     = picture_pool_GetSize(display_pool) - reserved_picture;
 136         sys->decoder_pool = display_pool;
 137         sys->display_pool = display_pool;
 138         sys->is_decoder_pool_slow = vd->info.is_slow;
 139     } else if (!sys->decoder_pool) {
 140         sys->decoder_pool =
 141             picture_pool_NewFromFormat(&source,
 142                                        __MAX(VOUT_MAX_PICTURES,
 143                                              reserved_picture + decoder_picture));
 144         if (allow_dr) {
 145             msg_Warn(vout, "Not enough direct buffers, using system memory");
 146             sys->dpb_size = 0;
 147         } else {
 148             sys->dpb_size = picture_pool_GetSize(sys->decoder_pool) - reserved_picture;
 149         }
 150         if (sys->display.use_dr)
 151             sys->display_pool = display_pool;
 152         else
 153             sys->display_pool = picture_pool_Reserve(sys->decoder_pool, display_picture);
 154         sys->is_decoder_pool_slow = false;
 155     }
 156     sys->private_pool = picture_pool_Reserve(sys->decoder_pool, private_picture);
 157     sys->display.filtered = NULL;
 158     return VLC_SUCCESS;
 159 }
 160
 161 /*****************************************************************************
 162  *
 163  *****************************************************************************/
 164 void vout_EndWrapper(vout_thread_t *vout)
 165 {
 166     vout_thread_sys_t *sys = vout->p;
 167
 168     assert(!sys->display.filtered);
 169     if (sys->private_pool)
 170         picture_pool_Delete(sys->private_pool);
 171
 172     if (sys->decoder_pool != sys->display_pool) {
 173         if (!sys->display.use_dr)
 174             picture_pool_Delete(sys->display_pool);
 175         picture_pool_Delete(sys->decoder_pool);
 176     }
 177 }
 178
 179 /*****************************************************************************
 180  *
 181  *****************************************************************************/
 182 void vout_ManageWrapper(vout_thread_t *vout)
 183 {
 184     vout_thread_sys_t *sys = vout->p;
 185     vout_display_t *vd = sys->display.vd;
 186
 187     bool reset_display_pool = sys->display.use_dr && vout_AreDisplayPicturesInvalid(vd);
 188     vout_ManageDisplay(vd, !sys->display.use_dr || reset_display_pool);
 189
 190     if (reset_display_pool)
 191         sys->display_pool = vout_display_Pool(vd, 3);
 192 }
 193
 194 /*****************************************************************************
 195  * Render
 196  *****************************************************************************/
 197 void vout_RenderWrapper(vout_thread_t *vout, picture_t *picture)
 198 {
 199     vout_thread_sys_t *sys = vout->p;
 200     vout_display_t *vd = sys->display.vd;
 201
 202     assert(vout_IsDisplayFiltered(vd) == !sys->display.use_dr);
 203
 204     if (sys->display.use_dr) {
 205         vout_display_Prepare(vd, picture);
 206     } else {
 207         sys->display.filtered = vout_FilterDisplay(vd, picture);
 208         if (sys->display.filtered)
 209             vout_display_Prepare(vd, sys->display.filtered);
 210     }
 211 }
 212
 213 /*****************************************************************************
 214  *
 215  *****************************************************************************/
 216 void vout_DisplayWrapper(vout_thread_t *vout, picture_t *picture)
 217 {
 218     vout_thread_sys_t *sys = vout->p;
 219     vout_display_t *vd = sys->display.vd;
 220
 221      vout_display_Display(vd, sys->display.filtered ? sys->display.filtered : picture);
 222      sys->display.filtered = NULL;
 223 }
 224
 225 #ifdef WIN32
 226 static int Forward(vlc_object_t *object, char const *var,
 227                    vlc_value_t oldval, vlc_value_t newval, void *data)
 228 {
 229     vout_thread_t *vout = (vout_thread_t*)object;
 230
 231     VLC_UNUSED(oldval);
 232     VLC_UNUSED(data);
 233     return var_Set(vout->p->display.vd, var, newval);
 234 }
 235 #endif
 236