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

   1 /*****************************************************************************
   2  * vout_intf.c : video output interface
   3  *****************************************************************************
   4  * Copyright (C) 2000-2007 the VideoLAN team
   5  *
   6  * Authors: Gildas Bazin <gbazin@videolan.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <vlc_common.h>
  32
  33 #include <stdio.h>
  34 #include <stdlib.h>                                                /* free() */
  35 #include <sys/types.h>                                          /* opendir() */
  36 #include <dirent.h>                                             /* opendir() */
  37 #include <assert.h>
  38 #include <time.h>                                           /* strftime */
  39
  40 #include <vlc_interface.h>
  41 #include <vlc_block.h>
  42 #include <vlc_playlist.h>
  43
  44 #include <vlc_vout.h>
  45 #include <vlc_image.h>
  46 #include <vlc_osd.h>
  47 #include <vlc_charset.h>
  48
  49 #include <vlc_strings.h>
  50 #include <vlc_charset.h>
  51 #include "../libvlc.h"
  52 #include "vout_internal.h"
  53
  54 /*****************************************************************************
  55  * Local prototypes
  56  *****************************************************************************/
  57 static void InitWindowSize( vout_thread_t *, unsigned *, unsigned * );
  58
  59 /* Object variables callbacks */
  60 static int ZoomCallback( vlc_object_t *, char const *,
  61                          vlc_value_t, vlc_value_t, void * );
  62 static int CropCallback( vlc_object_t *, char const *,
  63                          vlc_value_t, vlc_value_t, void * );
  64 static int AspectCallback( vlc_object_t *, char const *,
  65                            vlc_value_t, vlc_value_t, void * );
  66 static int ScalingCallback( vlc_object_t *, char const *,
  67                             vlc_value_t, vlc_value_t, void * );
  68 static int OnTopCallback( vlc_object_t *, char const *,
  69                           vlc_value_t, vlc_value_t, void * );
  70 static int FullscreenCallback( vlc_object_t *, char const *,
  71                                vlc_value_t, vlc_value_t, void * );
  72 static int SnapshotCallback( vlc_object_t *, char const *,
  73                              vlc_value_t, vlc_value_t, void * );
  74
  75 static int TitleShowCallback( vlc_object_t *, char const *,
  76                               vlc_value_t, vlc_value_t, void * );
  77 static int TitleTimeoutCallback( vlc_object_t *, char const *,
  78                                  vlc_value_t, vlc_value_t, void * );
  79 static int TitlePositionCallback( vlc_object_t *, char const *,
  80                                   vlc_value_t, vlc_value_t, void * );
  81
  82 /*****************************************************************************
  83  * vout_IntfInit: called during the vout creation to initialise misc things.
  84  *****************************************************************************/
  85 static const struct
  86 {
  87     double f_value;
  88     const char *psz_label;
  89 } p_zoom_values[] = {
  90     { 0.25, N_("1:4 Quarter") },
  91     { 0.5, N_("1:2 Half") },
  92     { 1, N_("1:1 Original") },
  93     { 2, N_("2:1 Double") },
  94     { 0, NULL } };
  95
  96 static const struct
  97 {
  98     const char *psz_value;
  99     const char *psz_label;
 100 } p_crop_values[] = {
 101     { "", N_("Default") },
 102     { "16:10", "16:10" },
 103     { "16:9", "16:9" },
 104     { "185:100", "1.85:1" },
 105     { "221:100", "2.21:1" },
 106     { "235:100", "2.35:1" },
 107     { "239:100", "2.39:1" },
 108     { "5:3", "5:3" },
 109     { "4:3", "4:3" },
 110     { "5:4", "5:4" },
 111     { "1:1", "1:1" },
 112     { NULL, NULL } };
 113
 114 static const struct
 115 {
 116     const char *psz_value;
 117     const char *psz_label;
 118 } p_aspect_ratio_values[] = {
 119     { "", N_("Default") },
 120     { "1:1", "1:1" },
 121     { "4:3", "4:3" },
 122     { "16:9", "16:9" },
 123     { "16:10", "16:10" },
 124     { "221:100", "2.21:1" },
 125     { "5:4", "5:4" },
 126     { NULL, NULL } };
 127
 128 static void AddCustomRatios( vout_thread_t *p_vout, const char *psz_var,
 129                              char *psz_list )
 130 {
 131     assert( psz_list );
 132
 133     char *psz_cur = psz_list;
 134     char *psz_next;
 135     while( psz_cur && *psz_cur )
 136     {
 137         vlc_value_t val, text;
 138         psz_next = strchr( psz_cur, ',' );
 139         if( psz_next )
 140         {
 141             *psz_next = '\0';
 142             psz_next++;
 143         }
 144         val.psz_string = psz_cur;
 145         text.psz_string = psz_cur;
 146         var_Change( p_vout, psz_var, VLC_VAR_ADDCHOICE, &val, &text);
 147         psz_cur = psz_next;
 148     }
 149 }
 150
 151 void vout_IntfInit( vout_thread_t *p_vout )
 152 {
 153     vlc_value_t val, text, old_val;
 154     bool b_force_par = false;
 155     char *psz_buf;
 156     int i;
 157
 158     /* Create a few object variables we'll need later on */
 159     var_Create( p_vout, "snapshot-path", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 160     var_Create( p_vout, "snapshot-prefix", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 161     var_Create( p_vout, "snapshot-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 162     var_Create( p_vout, "snapshot-preview", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 163     var_Create( p_vout, "snapshot-sequential",
 164                 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 165     var_Create( p_vout, "snapshot-num", VLC_VAR_INTEGER );
 166     var_SetInteger( p_vout, "snapshot-num", 1 );
 167     var_Create( p_vout, "snapshot-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 168     var_Create( p_vout, "snapshot-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 169
 170     var_Create( p_vout, "width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 171     var_Create( p_vout, "height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 172     p_vout->i_alignment = var_CreateGetInteger( p_vout, "align" );
 173
 174     var_Create( p_vout, "video-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 175     var_Create( p_vout, "video-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 176
 177     var_Create( p_vout, "mouse-hide-timeout",
 178                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 179
 180     p_vout->p->b_title_show = var_CreateGetBool( p_vout, "video-title-show" );
 181     p_vout->p->i_title_timeout =
 182         (mtime_t)var_CreateGetInteger( p_vout, "video-title-timeout" );
 183     p_vout->p->i_title_position =
 184         var_CreateGetInteger( p_vout, "video-title-position" );
 185     p_vout->p->psz_title =  NULL;
 186
 187     var_AddCallback( p_vout, "video-title-show", TitleShowCallback, NULL );
 188     var_AddCallback( p_vout, "video-title-timeout", TitleTimeoutCallback, NULL );
 189     var_AddCallback( p_vout, "video-title-position", TitlePositionCallback, NULL );
 190
 191     /* Zoom object var */
 192     var_Create( p_vout, "zoom", VLC_VAR_FLOAT | VLC_VAR_ISCOMMAND |
 193                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 194
 195     text.psz_string = _("Zoom");
 196     var_Change( p_vout, "zoom", VLC_VAR_SETTEXT, &text, NULL );
 197
 198     var_Get( p_vout, "zoom", &old_val );
 199
 200     for( i = 0; p_zoom_values[i].f_value; i++ )
 201     {
 202         if( old_val.f_float == p_zoom_values[i].f_value )
 203             var_Change( p_vout, "zoom", VLC_VAR_DELCHOICE, &old_val, NULL );
 204         val.f_float = p_zoom_values[i].f_value;
 205         text.psz_string = _( p_zoom_values[i].psz_label );
 206         var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 207     }
 208
 209     var_Set( p_vout, "zoom", old_val ); /* Is this really needed? */
 210
 211     var_AddCallback( p_vout, "zoom", ZoomCallback, NULL );
 212
 213     /* Crop offset vars */
 214     var_Create( p_vout, "crop-left", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 215     var_Create( p_vout, "crop-top", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 216     var_Create( p_vout, "crop-right", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 217     var_Create( p_vout, "crop-bottom", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 218
 219     var_AddCallback( p_vout, "crop-left", CropCallback, NULL );
 220     var_AddCallback( p_vout, "crop-top", CropCallback, NULL );
 221     var_AddCallback( p_vout, "crop-right", CropCallback, NULL );
 222     var_AddCallback( p_vout, "crop-bottom", CropCallback, NULL );
 223
 224     /* Crop object var */
 225     var_Create( p_vout, "crop", VLC_VAR_STRING | VLC_VAR_ISCOMMAND |
 226                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 227
 228     text.psz_string = _("Crop");
 229     var_Change( p_vout, "crop", VLC_VAR_SETTEXT, &text, NULL );
 230
 231     val.psz_string = (char*)"";
 232     var_Change( p_vout, "crop", VLC_VAR_DELCHOICE, &val, 0 );
 233
 234     for( i = 0; p_crop_values[i].psz_value; i++ )
 235     {
 236         val.psz_string = (char*)p_crop_values[i].psz_value;
 237         text.psz_string = _( p_crop_values[i].psz_label );
 238         var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 239     }
 240
 241     /* update triggered every time the vout's crop parameters are changed */
 242     var_Create( p_vout, "crop-update", VLC_VAR_VOID );
 243
 244     /* Add custom crop ratios */
 245     psz_buf = var_CreateGetNonEmptyString( p_vout, "custom-crop-ratios" );
 246     if( psz_buf )
 247     {
 248         AddCustomRatios( p_vout, "crop", psz_buf );
 249         free( psz_buf );
 250     }
 251
 252     var_AddCallback( p_vout, "crop", CropCallback, NULL );
 253     var_Get( p_vout, "crop", &old_val );
 254     if( old_val.psz_string && *old_val.psz_string )
 255         var_TriggerCallback( p_vout, "crop" );
 256     free( old_val.psz_string );
 257
 258     /* Monitor pixel aspect-ratio */
 259     var_Create( p_vout, "monitor-par", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 260     var_Get( p_vout, "monitor-par", &val );
 261     if( val.psz_string && *val.psz_string )
 262     {
 263         char *psz_parser = strchr( val.psz_string, ':' );
 264         unsigned int i_aspect_num = 0, i_aspect_den = 0;
 265         float i_aspect = 0;
 266         if( psz_parser )
 267         {
 268             i_aspect_num = strtol( val.psz_string, 0, 10 );
 269             i_aspect_den = strtol( ++psz_parser, 0, 10 );
 270         }
 271         else
 272         {
 273             i_aspect = us_atof( val.psz_string );
 274             vlc_ureduce( &i_aspect_num, &i_aspect_den,
 275                          i_aspect *VOUT_ASPECT_FACTOR, VOUT_ASPECT_FACTOR, 0 );
 276         }
 277         if( !i_aspect_num || !i_aspect_den ) i_aspect_num = i_aspect_den = 1;
 278
 279         p_vout->p->i_par_num = i_aspect_num;
 280         p_vout->p->i_par_den = i_aspect_den;
 281
 282         vlc_ureduce( &p_vout->p->i_par_num, &p_vout->p->i_par_den,
 283                      p_vout->p->i_par_num, p_vout->p->i_par_den, 0 );
 284
 285         msg_Dbg( p_vout, "overriding monitor pixel aspect-ratio: %i:%i",
 286                  p_vout->p->i_par_num, p_vout->p->i_par_den );
 287         b_force_par = true;
 288     }
 289     free( val.psz_string );
 290
 291     /* Aspect-ratio object var */
 292     var_Create( p_vout, "aspect-ratio", VLC_VAR_STRING | VLC_VAR_ISCOMMAND |
 293                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 294
 295     text.psz_string = _("Aspect-ratio");
 296     var_Change( p_vout, "aspect-ratio", VLC_VAR_SETTEXT, &text, NULL );
 297
 298     val.psz_string = (char*)"";
 299     var_Change( p_vout, "aspect-ratio", VLC_VAR_DELCHOICE, &val, 0 );
 300
 301     for( i = 0; p_aspect_ratio_values[i].psz_value; i++ )
 302     {
 303         val.psz_string = (char*)p_aspect_ratio_values[i].psz_value;
 304         text.psz_string = _( p_aspect_ratio_values[i].psz_label );
 305         var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 306     }
 307
 308     /* Add custom aspect ratios */
 309     psz_buf = var_CreateGetNonEmptyString( p_vout, "custom-aspect-ratios" );
 310     if( psz_buf )
 311     {
 312         AddCustomRatios( p_vout, "aspect-ratio", psz_buf );
 313         free( psz_buf );
 314     }
 315
 316     var_AddCallback( p_vout, "aspect-ratio", AspectCallback, NULL );
 317     var_Get( p_vout, "aspect-ratio", &old_val );
 318     if( (old_val.psz_string && *old_val.psz_string) || b_force_par )
 319         var_TriggerCallback( p_vout, "aspect-ratio" );
 320     free( old_val.psz_string );
 321
 322     /* Add variables to manage scaling video */
 323     var_Create( p_vout, "autoscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT
 324                 | VLC_VAR_ISCOMMAND );
 325     text.psz_string = _("Autoscale video");
 326     var_Change( p_vout, "autoscale", VLC_VAR_SETTEXT, &text, NULL );
 327     var_AddCallback( p_vout, "autoscale", ScalingCallback, NULL );
 328     p_vout->b_autoscale = var_GetBool( p_vout, "autoscale" );
 329
 330     var_Create( p_vout, "scale", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT
 331                 | VLC_VAR_ISCOMMAND );
 332     text.psz_string = _("Scale factor");
 333     var_Change( p_vout, "scale", VLC_VAR_SETTEXT, &text, NULL );
 334     var_AddCallback( p_vout, "scale", ScalingCallback, NULL );
 335     p_vout->i_zoom = (int)( ZOOM_FP_FACTOR * var_GetFloat( p_vout, "scale" ) );
 336
 337     /* Initialize the dimensions of the video window */
 338     InitWindowSize( p_vout, &p_vout->i_window_width,
 339                     &p_vout->i_window_height );
 340
 341     /* Add a variable to indicate if the window should be on top of others */
 342     var_Create( p_vout, "video-on-top", VLC_VAR_BOOL | VLC_VAR_DOINHERIT
 343                 | VLC_VAR_ISCOMMAND );
 344     text.psz_string = _("Always on top");
 345     var_Change( p_vout, "video-on-top", VLC_VAR_SETTEXT, &text, NULL );
 346     var_AddCallback( p_vout, "video-on-top", OnTopCallback, NULL );
 347
 348     /* Add a variable to indicate whether we want window decoration or not */
 349     var_Create( p_vout, "video-deco", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 350
 351     /* Add a fullscreen variable */
 352     if( var_CreateGetBoolCommand( p_vout, "fullscreen" ) )
 353     {
 354         /* user requested fullscreen */
 355         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 356     }
 357     text.psz_string = _("Fullscreen");
 358     var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
 359     var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );
 360
 361     /* Add a snapshot variable */
 362     var_Create( p_vout, "video-snapshot", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
 363     text.psz_string = _("Snapshot");
 364     var_Change( p_vout, "video-snapshot", VLC_VAR_SETTEXT, &text, NULL );
 365     var_AddCallback( p_vout, "video-snapshot", SnapshotCallback, NULL );
 366
 367     /* Mouse coordinates */
 368     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 369     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 370     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 371     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 372     var_Create( p_vout, "mouse-clicked", VLC_VAR_BOOL );
 373
 374     var_Create( p_vout, "intf-change", VLC_VAR_BOOL );
 375     var_SetBool( p_vout, "intf-change", true );
 376 }
 377
 378 /*****************************************************************************
 379  * vout_Snapshot: generates a snapshot.
 380  *****************************************************************************/
 381 /**
 382  * This function will inject a subpicture into the vout with the provided
 383  * picture
 384  */
 385 static int VoutSnapshotPip( vout_thread_t *p_vout, picture_t *p_pic )
 386 {
 387     subpicture_t *p_subpic = subpicture_NewFromPicture( VLC_OBJECT(p_vout),
 388                                                         p_pic, VLC_CODEC_YUVA );
 389     if( !p_subpic )
 390         return VLC_EGENERIC;
 391
 392     /* FIXME DEFAULT_CHAN is not good (used by the text) but
 393      * hardcoded 0 doesn't seem right */
 394     p_subpic->i_channel = 0;
 395     p_subpic->i_start = mdate();
 396     p_subpic->i_stop  = p_subpic->i_start + 4000000;
 397     p_subpic->b_ephemer = true;
 398     p_subpic->b_fade = true;
 399
 400     /* Reduce the picture to 1/4^2 of the screen */
 401     p_subpic->i_original_picture_width  *= 4;
 402     p_subpic->i_original_picture_height *= 4;
 403
 404     spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
 405     return VLC_SUCCESS;
 406 }
 407
 408 /**
 409  * This function will display the name and a PIP of the provided snapshot
 410  */
 411 static void VoutOsdSnapshot( vout_thread_t *p_vout, picture_t *p_pic, const char *psz_filename )
 412 {
 413     msg_Dbg( p_vout, "snapshot taken (%s)", psz_filename );
 414     vout_OSDMessage( VLC_OBJECT( p_vout ), DEFAULT_CHAN, "%s", psz_filename );
 415
 416     if( var_GetBool( p_vout, "snapshot-preview" ) )
 417     {
 418         if( VoutSnapshotPip( p_vout, p_pic ) )
 419             msg_Warn( p_vout, "Failed to display snapshot" );
 420     }
 421 }
 422
 423 /* */
 424 int vout_GetSnapshot( vout_thread_t *p_vout,
 425                       block_t **pp_image, picture_t **pp_picture,
 426                       video_format_t *p_fmt,
 427                       const char *psz_format, mtime_t i_timeout )
 428 {
 429     picture_t *p_picture = vout_snapshot_Get( &p_vout->p->snapshot, i_timeout );
 430     if( !p_picture )
 431     {
 432         msg_Err( p_vout, "Failed to grab a snapshot" );
 433         return VLC_EGENERIC;
 434     }
 435
 436     if( pp_image )
 437     {
 438         vlc_fourcc_t i_format = VLC_CODEC_PNG;
 439         if( psz_format && image_Type2Fourcc( psz_format ) )
 440             i_format = image_Type2Fourcc( psz_format );
 441
 442         const int i_override_width  = var_GetInteger( p_vout, "snapshot-width" );
 443         const int i_override_height = var_GetInteger( p_vout, "snapshot-height" );
 444
 445         if( picture_Export( VLC_OBJECT(p_vout), pp_image, p_fmt,
 446                             p_picture, i_format, i_override_width, i_override_height ) )
 447         {
 448             msg_Err( p_vout, "Failed to convert image for snapshot" );
 449             picture_Release( p_picture );
 450             return VLC_EGENERIC;
 451         }
 452     }
 453     if( pp_picture )
 454         *pp_picture = p_picture;
 455     else
 456         picture_Release( p_picture );
 457     return VLC_SUCCESS;
 458 }
 459
 460 /**
 461  * This function will handle a snapshot request
 462  */
 463 static void VoutSaveSnapshot( vout_thread_t *p_vout )
 464 {
 465     char *psz_path = var_GetNonEmptyString( p_vout, "snapshot-path" );
 466     char *psz_format = var_GetNonEmptyString( p_vout, "snapshot-format" );
 467     char *psz_prefix = var_GetNonEmptyString( p_vout, "snapshot-prefix" );
 468
 469     /* */
 470     picture_t *p_picture;
 471     block_t *p_image;
 472     video_format_t fmt;
 473
 474     /* 500ms timeout
 475      * XXX it will cause trouble with low fps video (< 2fps) */
 476     if( vout_GetSnapshot( p_vout, &p_image, &p_picture, &fmt, psz_format, 500*1000 ) )
 477     {
 478         p_picture = NULL;
 479         p_image = NULL;
 480         goto exit;
 481     }
 482
 483     if( !psz_path )
 484     {
 485         psz_path = vout_snapshot_GetDirectory();
 486         if( !psz_path )
 487         {
 488             msg_Err( p_vout, "no path specified for snapshots" );
 489             goto exit;
 490         }
 491     }
 492
 493     vout_snapshot_save_cfg_t cfg;
 494     memset( &cfg, 0, sizeof(cfg) );
 495     cfg.is_sequential = var_GetBool( p_vout, "snapshot-sequential" );
 496     cfg.sequence = var_GetInteger( p_vout, "snapshot-num" );
 497     cfg.path = psz_path;
 498     cfg.format = psz_format;
 499     cfg.prefix_fmt = psz_prefix;
 500
 501     char *psz_filename;
 502     int  i_sequence;
 503     if (vout_snapshot_SaveImage( &psz_filename, &i_sequence,
 504                                  p_image, VLC_OBJECT(p_vout), &cfg ) )
 505         goto exit;
 506     if( cfg.is_sequential )
 507         var_SetInteger( p_vout, "snapshot-num", i_sequence + 1 );
 508
 509     VoutOsdSnapshot( p_vout, p_picture, psz_filename );
 510
 511     /* signal creation of a new snapshot file */
 512     var_SetString( p_vout->p_libvlc, "snapshot-file", psz_filename );
 513
 514     free( psz_filename );
 515
 516 exit:
 517     if( p_image )
 518         block_Release( p_image );
 519     if( p_picture )
 520         picture_Release( p_picture );
 521     free( psz_prefix );
 522     free( psz_format );
 523     free( psz_path );
 524 }
 525
 526 /*****************************************************************************
 527  * Handle filters
 528  *****************************************************************************/
 529
 530 void vout_EnableFilter( vout_thread_t *p_vout, const char *psz_name,
 531                         bool b_add, bool b_setconfig )
 532 {
 533     char *psz_parser;
 534     char *psz_string;
 535     const char *psz_filter_type;
 536
 537     /* FIXME temporary hack */
 538     const char *psz_module_name = psz_name;
 539     if( !strcmp( psz_name, "magnify" ) ||
 540         !strcmp( psz_name, "puzzle" ) ||
 541         !strcmp( psz_name, "logo" ) ||
 542         !strcmp( psz_name, "wall" ) ||
 543         !strcmp( psz_name, "clone" ) )
 544         psz_module_name = "video_filter_wrapper";
 545
 546     module_t *p_obj = module_find( psz_module_name );
 547     if( !p_obj )
 548     {
 549         msg_Err( p_vout, "Unable to find filter module \"%s\".", psz_name );
 550         return;
 551     }
 552
 553     if( module_provides( p_obj, "video filter" ) )
 554     {
 555         psz_filter_type = "vout-filter";
 556     }
 557     else if( module_provides( p_obj, "video filter2" ) )
 558     {
 559         psz_filter_type = "video-filter";
 560     }
 561     else if( module_provides( p_obj, "sub filter" ) )
 562     {
 563         psz_filter_type = "sub-filter";
 564     }
 565     else
 566     {
 567         module_release( p_obj );
 568         msg_Err( p_vout, "Unknown video filter type." );
 569         return;
 570     }
 571     module_release( p_obj );
 572
 573     if( !strcmp( psz_filter_type, "sub-filter") )
 574         psz_string = var_GetString( vout_GetSpu( p_vout ), psz_filter_type );
 575     else
 576         psz_string = var_GetString( p_vout, psz_filter_type );
 577
 578     /* Todo : Use some generic chain manipulation functions */
 579     if( !psz_string ) psz_string = strdup("");
 580
 581     psz_parser = strstr( psz_string, psz_name );
 582     if( b_add )
 583     {
 584         if( !psz_parser )
 585         {
 586             psz_parser = psz_string;
 587             if( asprintf( &psz_string, (*psz_string) ? "%s:%s" : "%s%s",
 588                           psz_string, psz_name ) == -1 )
 589             {
 590                 free( psz_parser );
 591                 return;
 592             }
 593             free( psz_parser );
 594         }
 595         else
 596             return;
 597     }
 598     else
 599     {
 600         if( psz_parser )
 601         {
 602             memmove( psz_parser, psz_parser + strlen(psz_name) +
 603                             (*(psz_parser + strlen(psz_name)) == ':' ? 1 : 0 ),
 604                             strlen(psz_parser + strlen(psz_name)) + 1 );
 605
 606             /* Remove trailing : : */
 607             if( *(psz_string+strlen(psz_string ) -1 ) == ':' )
 608             {
 609                 *(psz_string+strlen(psz_string ) -1 ) = '\0';
 610             }
 611          }
 612          else
 613          {
 614              free( psz_string );
 615              return;
 616          }
 617     }
 618
 619     if( b_setconfig )
 620     {
 621         if( !strcmp( psz_filter_type, "sub-filter") )
 622             config_PutPsz( vout_GetSpu( p_vout ), psz_filter_type, psz_string );
 623         else
 624             config_PutPsz( p_vout, psz_filter_type, psz_string );
 625     }
 626
 627     if( !strcmp( psz_filter_type, "sub-filter") )
 628         var_SetString( vout_GetSpu( p_vout ), psz_filter_type, psz_string );
 629     else
 630         var_SetString( p_vout, psz_filter_type, psz_string );
 631
 632     free( psz_string );
 633 }
 634
 635 /*****************************************************************************
 636  * InitWindowSize: find the initial dimensions the video window should have.
 637  *****************************************************************************
 638  * This function will check the "width", "height" and "zoom" config options and
 639  * will calculate the size that the video window should have.
 640  *****************************************************************************/
 641 static void InitWindowSize( vout_thread_t *p_vout, unsigned *pi_width,
 642                             unsigned *pi_height )
 643 {
 644 #define FP_FACTOR 1000                             /* our fixed point factor */
 645
 646     int i_width = var_GetInteger( p_vout, "width" );
 647     int i_height = var_GetInteger( p_vout, "height" );
 648     float f_zoom = var_GetFloat( p_vout, "zoom" );
 649     uint64_t ll_zoom = (uint64_t)( FP_FACTOR * f_zoom );
 650
 651     if( i_width > 0 && i_height > 0)
 652     {
 653         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 654         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 655     }
 656     else if( i_width > 0 )
 657     {
 658         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 659         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 660             p_vout->fmt_in.i_sar_den * i_width / p_vout->fmt_in.i_sar_num /
 661             FP_FACTOR / p_vout->fmt_in.i_visible_width );
 662     }
 663     else if( i_height > 0 )
 664     {
 665         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 666         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 667             p_vout->fmt_in.i_sar_num * i_height / p_vout->fmt_in.i_sar_den /
 668             FP_FACTOR / p_vout->fmt_in.i_visible_height );
 669     }
 670     else if( p_vout->fmt_in.i_sar_num == 0 || p_vout->fmt_in.i_sar_den == 0 )
 671     {
 672         msg_Warn( p_vout, "aspect ratio screwed up" );
 673         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom / FP_FACTOR );
 674         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom /FP_FACTOR);
 675     }
 676     else if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 677     {
 678         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 679             p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den / FP_FACTOR );
 680         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom
 681             / FP_FACTOR );
 682     }
 683     else
 684     {
 685         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom
 686             / FP_FACTOR );
 687         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 688             p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num / FP_FACTOR );
 689     }
 690
 691     msg_Dbg( p_vout, "window size: %ux%u", *pi_width, *pi_height );
 692
 693 #undef FP_FACTOR
 694 }
 695
 696 /*****************************************************************************
 697  * Object variables callbacks
 698  *****************************************************************************/
 699 static int ZoomCallback( vlc_object_t *p_this, char const *psz_cmd,
 700                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 701 {
 702     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 703     (void)psz_cmd; (void)oldval; (void)newval; (void)p_data;
 704     InitWindowSize( p_vout, &p_vout->i_window_width,
 705                     &p_vout->i_window_height );
 706     vout_Control( p_vout, VOUT_SET_SIZE, p_vout->i_window_width,
 707                   p_vout->i_window_height );
 708     return VLC_SUCCESS;
 709 }
 710
 711 static int CropCallback( vlc_object_t *p_this, char const *psz_cmd,
 712                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 713 {
 714     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 715     int64_t i_aspect_num, i_aspect_den;
 716     unsigned int i_width, i_height;
 717
 718     (void)oldval; (void)p_data;
 719
 720     /* Restore defaults */
 721     p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset;
 722     p_vout->fmt_in.i_visible_width = p_vout->fmt_render.i_visible_width;
 723     p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset;
 724     p_vout->fmt_in.i_visible_height = p_vout->fmt_render.i_visible_height;
 725
 726     if( !strcmp( psz_cmd, "crop" ) )
 727     {
 728         char *psz_end = NULL, *psz_parser = strchr( newval.psz_string, ':' );
 729         if( psz_parser )
 730         {
 731             /* We're using the 3:4 syntax */
 732             i_aspect_num = strtol( newval.psz_string, &psz_end, 10 );
 733             if( psz_end == newval.psz_string || !i_aspect_num ) goto crop_end;
 734
 735             i_aspect_den = strtol( ++psz_parser, &psz_end, 10 );
 736             if( psz_end == psz_parser || !i_aspect_den ) goto crop_end;
 737
 738             i_width = p_vout->fmt_in.i_sar_den*p_vout->fmt_render.i_visible_height *
 739                 i_aspect_num / i_aspect_den / p_vout->fmt_in.i_sar_num;
 740             i_height = p_vout->fmt_render.i_visible_width*p_vout->fmt_in.i_sar_num *
 741                 i_aspect_den / i_aspect_num / p_vout->fmt_in.i_sar_den;
 742
 743             if( i_width < p_vout->fmt_render.i_visible_width )
 744             {
 745                 p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset +
 746                     (p_vout->fmt_render.i_visible_width - i_width) / 2;
 747                 p_vout->fmt_in.i_visible_width = i_width;
 748             }
 749             else
 750             {
 751                 p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset +
 752                     (p_vout->fmt_render.i_visible_height - i_height) / 2;
 753                 p_vout->fmt_in.i_visible_height = i_height;
 754             }
 755         }
 756         else
 757         {
 758             psz_parser = strchr( newval.psz_string, 'x' );
 759             if( psz_parser )
 760             {
 761                 /* Maybe we're using the <width>x<height>+<left>+<top> syntax */
 762                 unsigned int i_crop_width, i_crop_height, i_crop_top, i_crop_left;
 763
 764                 i_crop_width = strtol( newval.psz_string, &psz_end, 10 );
 765                 if( psz_end != psz_parser ) goto crop_end;
 766
 767                 psz_parser = strchr( ++psz_end, '+' );
 768                 i_crop_height = strtol( psz_end, &psz_end, 10 );
 769                 if( psz_end != psz_parser ) goto crop_end;
 770
 771                 psz_parser = strchr( ++psz_end, '+' );
 772                 i_crop_left = strtol( psz_end, &psz_end, 10 );
 773                 if( psz_end != psz_parser ) goto crop_end;
 774
 775                 psz_end++;
 776                 i_crop_top = strtol( psz_end, &psz_end, 10 );
 777                 if( *psz_end != '\0' ) goto crop_end;
 778
 779                 if( i_crop_top + i_crop_height >= p_vout->fmt_render.i_visible_height ||
 780                     i_crop_left + i_crop_width >= p_vout->fmt_render.i_visible_width )
 781                 {
 782                     msg_Err( p_vout, "Unable to crop over picture boundaries");
 783                     return VLC_EGENERIC;
 784                 }
 785
 786                 i_width = i_crop_width;
 787                 p_vout->fmt_in.i_visible_width = i_width;
 788
 789                 i_height = i_crop_height;
 790                 p_vout->fmt_in.i_visible_height = i_height;
 791
 792                 p_vout->fmt_in.i_x_offset = i_crop_left;
 793                 p_vout->fmt_in.i_y_offset = i_crop_top;
 794             }
 795             else
 796             {
 797                 /* Maybe we're using the <left>+<top>+<right>+<bottom> syntax */
 798                 unsigned int i_crop_top, i_crop_left, i_crop_bottom, i_crop_right;
 799
 800                 psz_parser = strchr( newval.psz_string, '+' );
 801                 i_crop_left = strtol( newval.psz_string, &psz_end, 10 );
 802                 if( psz_end != psz_parser ) goto crop_end;
 803
 804                 psz_parser = strchr( ++psz_end, '+' );
 805                 i_crop_top = strtol( psz_end, &psz_end, 10 );
 806                 if( psz_end != psz_parser ) goto crop_end;
 807
 808                 psz_parser = strchr( ++psz_end, '+' );
 809                 i_crop_right = strtol( psz_end, &psz_end, 10 );
 810                 if( psz_end != psz_parser ) goto crop_end;
 811
 812                 psz_end++;
 813                 i_crop_bottom = strtol( psz_end, &psz_end, 10 );
 814                 if( *psz_end != '\0' ) goto crop_end;
 815
 816                 if( i_crop_top + i_crop_bottom >= p_vout->fmt_render.i_visible_height ||
 817                     i_crop_right + i_crop_left >= p_vout->fmt_render.i_visible_width )
 818                 {
 819                     msg_Err( p_vout, "Unable to crop over picture boundaries" );
 820                     return VLC_EGENERIC;
 821                 }
 822
 823                 i_width = p_vout->fmt_render.i_visible_width
 824                           - i_crop_left - i_crop_right;
 825                 p_vout->fmt_in.i_visible_width = i_width;
 826
 827                 i_height = p_vout->fmt_render.i_visible_height
 828                            - i_crop_top - i_crop_bottom;
 829                 p_vout->fmt_in.i_visible_height = i_height;
 830
 831                 p_vout->fmt_in.i_x_offset = i_crop_left;
 832                 p_vout->fmt_in.i_y_offset = i_crop_top;
 833             }
 834         }
 835     }
 836     else if( !strcmp( psz_cmd, "crop-top" )
 837           || !strcmp( psz_cmd, "crop-left" )
 838           || !strcmp( psz_cmd, "crop-bottom" )
 839           || !strcmp( psz_cmd, "crop-right" ) )
 840     {
 841         unsigned int i_crop_top, i_crop_left, i_crop_bottom, i_crop_right;
 842
 843         i_crop_top = var_GetInteger( p_vout, "crop-top" );
 844         i_crop_left = var_GetInteger( p_vout, "crop-left" );
 845         i_crop_right = var_GetInteger( p_vout, "crop-right" );
 846         i_crop_bottom = var_GetInteger( p_vout, "crop-bottom" );
 847
 848         if( i_crop_top + i_crop_bottom >= p_vout->fmt_render.i_visible_height ||
 849             i_crop_right + i_crop_left >= p_vout->fmt_render.i_visible_width )
 850         {
 851             msg_Err( p_vout, "Unable to crop over picture boundaries" );
 852             return VLC_EGENERIC;
 853         }
 854
 855         i_width = p_vout->fmt_render.i_visible_width
 856                   - i_crop_left - i_crop_right;
 857         p_vout->fmt_in.i_visible_width = i_width;
 858
 859         i_height = p_vout->fmt_render.i_visible_height
 860                    - i_crop_top - i_crop_bottom;
 861         p_vout->fmt_in.i_visible_height = i_height;
 862
 863         p_vout->fmt_in.i_x_offset = i_crop_left;
 864         p_vout->fmt_in.i_y_offset = i_crop_top;
 865     }
 866
 867  crop_end:
 868     InitWindowSize( p_vout, &p_vout->i_window_width,
 869                     &p_vout->i_window_height );
 870
 871     p_vout->i_changes |= VOUT_CROP_CHANGE;
 872
 873     msg_Dbg( p_vout, "cropping picture %ix%i to %i,%i,%ix%i",
 874              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 875              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 876              p_vout->fmt_in.i_visible_width,
 877              p_vout->fmt_in.i_visible_height );
 878
 879     var_TriggerCallback( p_vout, "crop-update" );
 880
 881     return VLC_SUCCESS;
 882 }
 883
 884 static int AspectCallback( vlc_object_t *p_this, char const *psz_cmd,
 885                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 886 {
 887     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 888     unsigned int i_aspect_num, i_aspect_den, i_sar_num, i_sar_den;
 889     vlc_value_t val;
 890
 891     char *psz_end, *psz_parser = strchr( newval.psz_string, ':' );
 892     (void)psz_cmd; (void)oldval; (void)p_data;
 893
 894     /* Restore defaults */
 895     p_vout->fmt_in.i_sar_num = p_vout->fmt_render.i_sar_num;
 896     p_vout->fmt_in.i_sar_den = p_vout->fmt_render.i_sar_den;
 897     p_vout->render.i_aspect = (int64_t)p_vout->fmt_render.i_sar_num *
 898                                        p_vout->fmt_render.i_width *
 899                                        VOUT_ASPECT_FACTOR /
 900                                        p_vout->fmt_render.i_sar_den / p_vout->fmt_render.i_height;
 901
 902     if( !psz_parser ) goto aspect_end;
 903
 904     i_aspect_num = strtol( newval.psz_string, &psz_end, 10 );
 905     if( psz_end == newval.psz_string || !i_aspect_num ) goto aspect_end;
 906
 907     i_aspect_den = strtol( ++psz_parser, &psz_end, 10 );
 908     if( psz_end == psz_parser || !i_aspect_den ) goto aspect_end;
 909
 910     i_sar_num = i_aspect_num * p_vout->fmt_render.i_visible_height;
 911     i_sar_den = i_aspect_den * p_vout->fmt_render.i_visible_width;
 912     vlc_ureduce( &i_sar_num, &i_sar_den, i_sar_num, i_sar_den, 0 );
 913     p_vout->fmt_in.i_sar_num = i_sar_num;
 914     p_vout->fmt_in.i_sar_den = i_sar_den;
 915     p_vout->render.i_aspect = i_aspect_num * VOUT_ASPECT_FACTOR / i_aspect_den;
 916
 917  aspect_end:
 918     if( p_vout->p->i_par_num && p_vout->p->i_par_den )
 919     {
 920         p_vout->fmt_in.i_sar_num *= p_vout->p->i_par_den;
 921         p_vout->fmt_in.i_sar_den *= p_vout->p->i_par_num;
 922         p_vout->render.i_aspect = (int64_t)p_vout->fmt_in.i_sar_num *
 923                                            p_vout->fmt_in.i_width *
 924                                            VOUT_ASPECT_FACTOR /
 925                                            p_vout->fmt_in.i_sar_den /
 926                                            p_vout->fmt_in.i_height;
 927     }
 928
 929     p_vout->i_changes |= VOUT_ASPECT_CHANGE;
 930
 931     msg_Dbg( p_vout, "new aspect-ratio %i:%i, sample aspect-ratio %i:%i",
 932              p_vout->fmt_in.i_sar_num * p_vout->fmt_in.i_width,
 933              p_vout->fmt_in.i_sar_den * p_vout->fmt_in.i_height,
 934              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 935
 936     if( var_Get( p_vout, "crop", &val ) )
 937         return VLC_EGENERIC;
 938
 939     int i_ret = CropCallback( p_this, "crop", val, val, 0 );
 940     free( val.psz_string );
 941     return i_ret;
 942 }
 943
 944 static int ScalingCallback( vlc_object_t *p_this, char const *psz_cmd,
 945                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 946 {
 947     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 948     (void)oldval; (void)newval; (void)p_data;
 949
 950     vlc_mutex_lock( &p_vout->change_lock );
 951
 952     if( !strcmp( psz_cmd, "autoscale" ) )
 953     {
 954         p_vout->i_changes |= VOUT_SCALE_CHANGE;
 955     }
 956     else if( !strcmp( psz_cmd, "scale" ) )
 957     {
 958         p_vout->i_changes |= VOUT_ZOOM_CHANGE;
 959     }
 960
 961     vlc_mutex_unlock( &p_vout->change_lock );
 962
 963     return VLC_SUCCESS;
 964 }
 965
 966 static int OnTopCallback( vlc_object_t *p_this, char const *psz_cmd,
 967                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 968 {
 969     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 970
 971     vlc_mutex_lock( &p_vout->change_lock );
 972     p_vout->i_changes |= VOUT_ON_TOP_CHANGE;
 973     p_vout->b_on_top = newval.b_bool;
 974     vlc_mutex_unlock( &p_vout->change_lock );
 975
 976     /* Modify libvlc as well because the vout might have to be restarted */
 977     var_Create( p_vout->p_libvlc, "video-on-top", VLC_VAR_BOOL );
 978     var_Set( p_vout->p_libvlc, "video-on-top", newval );
 979
 980     (void)psz_cmd; (void)oldval; (void)p_data;
 981     return VLC_SUCCESS;
 982 }
 983
 984 static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
 985                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 986 {
 987     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 988     vlc_value_t val;
 989     (void)psz_cmd; (void)oldval; (void)p_data;
 990
 991     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 992
 993     /* Modify libvlc as well because the vout might have to be restarted */
 994     var_Create( p_vout->p_libvlc, "fullscreen", VLC_VAR_BOOL );
 995     var_Set( p_vout->p_libvlc, "fullscreen", newval );
 996
 997     val.b_bool = true;
 998     var_Set( p_vout, "intf-change", val );
 999     return VLC_SUCCESS;
1000 }
1001
1002 static int SnapshotCallback( vlc_object_t *p_this, char const *psz_cmd,
1003                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1004 {
1005     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1006     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
1007     VLC_UNUSED(newval); VLC_UNUSED(p_data);
1008
1009     VoutSaveSnapshot( p_vout );
1010     return VLC_SUCCESS;
1011 }
1012
1013 static int TitleShowCallback( vlc_object_t *p_this, char const *psz_cmd,
1014                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1015 {
1016     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
1017     VLC_UNUSED(p_data);
1018     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1019     p_vout->p->b_title_show = newval.b_bool;
1020     return VLC_SUCCESS;
1021 }
1022
1023 static int TitleTimeoutCallback( vlc_object_t *p_this, char const *psz_cmd,
1024                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1025 {
1026     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_data);
1027     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1028     p_vout->p->i_title_timeout = (mtime_t) newval.i_int;
1029     return VLC_SUCCESS;
1030 }
1031
1032 static int TitlePositionCallback( vlc_object_t *p_this, char const *psz_cmd,
1033                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1034 {
1035     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
1036     VLC_UNUSED(p_data);
1037     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1038     p_vout->p->i_title_position = newval.i_int;
1039     return VLC_SUCCESS;
1040 }