src/input/control.c

   1 /*****************************************************************************
   2  * control.c
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Gildas Bazin <gbazin@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <vlc_common.h>
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <assert.h>
  33
  34 #include "input_internal.h"
  35 #include "event.h"
  36 #include "resource.h"
  37 #include "es_out.h"
  38
  39
  40 static void UpdateBookmarksOption( input_thread_t * );
  41
  42 /****************************************************************************
  43  * input_Control
  44  ****************************************************************************/
  45 /**
  46  * Control function for inputs.
  47  * \param p_input input handle
  48  * \param i_query query type
  49  * \return VLC_SUCCESS if ok
  50  */
  51 int input_Control( input_thread_t *p_input, int i_query, ...  )
  52 {
  53     va_list args;
  54     int     i_result;
  55
  56     va_start( args, i_query );
  57     i_result = input_vaControl( p_input, i_query, args );
  58     va_end( args );
  59
  60     return i_result;
  61 }
  62
  63 int input_vaControl( input_thread_t *p_input, int i_query, va_list args )
  64 {
  65     seekpoint_t *p_bkmk, ***ppp_bkmk;
  66     int i_bkmk = 0;
  67     int *pi_bkmk;
  68
  69     int i_int, *pi_int;
  70     bool b_bool, *pb_bool;
  71     double f, *pf;
  72     int64_t i_64, *pi_64;
  73
  74     char *psz;
  75     vlc_value_t val;
  76
  77     switch( i_query )
  78     {
  79         case INPUT_GET_POSITION:
  80             pf = (double*)va_arg( args, double * );
  81             *pf = var_GetFloat( p_input, "position" );
  82             return VLC_SUCCESS;
  83
  84         case INPUT_SET_POSITION:
  85             f = (double)va_arg( args, double );
  86             return var_SetFloat( p_input, "position", f );
  87
  88         case INPUT_GET_LENGTH:
  89             pi_64 = (int64_t*)va_arg( args, int64_t * );
  90             *pi_64 = var_GetTime( p_input, "length" );
  91             return VLC_SUCCESS;
  92
  93         case INPUT_GET_TIME:
  94             pi_64 = (int64_t*)va_arg( args, int64_t * );
  95             *pi_64 = var_GetTime( p_input, "time" );
  96             return VLC_SUCCESS;
  97
  98         case INPUT_SET_TIME:
  99             i_64 = (int64_t)va_arg( args, int64_t );
 100             return var_SetTime( p_input, "time", i_64 );
 101
 102         case INPUT_GET_RATE:
 103             pi_int = (int*)va_arg( args, int * );
 104             *pi_int = INPUT_RATE_DEFAULT / var_GetFloat( p_input, "rate" );
 105             return VLC_SUCCESS;
 106
 107         case INPUT_SET_RATE:
 108             i_int = (int)va_arg( args, int );
 109             return var_SetFloat( p_input, "rate",
 110                                  (float)INPUT_RATE_DEFAULT / (float)i_int );
 111
 112         case INPUT_GET_STATE:
 113             pi_int = (int*)va_arg( args, int * );
 114             *pi_int = var_GetInteger( p_input, "state" );
 115             return VLC_SUCCESS;
 116
 117         case INPUT_SET_STATE:
 118             i_int = (int)va_arg( args, int );
 119             return var_SetInteger( p_input, "state", i_int );
 120
 121         case INPUT_GET_AUDIO_DELAY:
 122             pi_64 = (int64_t*)va_arg( args, int64_t * );
 123             *pi_64 = var_GetTime( p_input, "audio-delay" );
 124             return VLC_SUCCESS;
 125
 126         case INPUT_GET_SPU_DELAY:
 127             pi_64 = (int64_t*)va_arg( args, int64_t * );
 128             *pi_64 = var_GetTime( p_input, "spu-delay" );
 129             return VLC_SUCCESS;
 130
 131         case INPUT_SET_AUDIO_DELAY:
 132             i_64 = (int64_t)va_arg( args, int64_t );
 133             return var_SetTime( p_input, "audio-delay", i_64 );
 134
 135         case INPUT_SET_SPU_DELAY:
 136             i_64 = (int64_t)va_arg( args, int64_t );
 137             return var_SetTime( p_input, "spu-delay", i_64 );
 138
 139         case INPUT_NAV_ACTIVATE:
 140         case INPUT_NAV_UP:
 141         case INPUT_NAV_DOWN:
 142         case INPUT_NAV_LEFT:
 143         case INPUT_NAV_RIGHT:
 144             input_ControlPush( p_input, i_query - INPUT_NAV_ACTIVATE
 145                                + INPUT_CONTROL_NAV_ACTIVATE, NULL );
 146             return VLC_SUCCESS;
 147
 148         case INPUT_ADD_INFO:
 149         {
 150             char *psz_cat = (char *)va_arg( args, char * );
 151             char *psz_name = (char *)va_arg( args, char * );
 152             char *psz_format = (char *)va_arg( args, char * );
 153
 154             char *psz_value;
 155
 156             if( vasprintf( &psz_value, psz_format, args ) == -1 )
 157                 return VLC_EGENERIC;
 158
 159             int i_ret = input_item_AddInfo( p_input->p->p_item,
 160                                             psz_cat, psz_name, "%s", psz_value );
 161             free( psz_value );
 162
 163             if( !p_input->b_preparsing && !i_ret )
 164                 input_SendEventMetaInfo( p_input );
 165             return i_ret;
 166         }
 167         case INPUT_REPLACE_INFOS:
 168         case INPUT_MERGE_INFOS:
 169         {
 170             info_category_t *p_cat = va_arg( args, info_category_t * );
 171
 172             if( i_query == INPUT_REPLACE_INFOS )
 173                 input_item_ReplaceInfos( p_input->p->p_item, p_cat );
 174             else
 175                 input_item_MergeInfos( p_input->p->p_item, p_cat );
 176
 177             if( !p_input->b_preparsing )
 178                 input_SendEventMetaInfo( p_input );
 179             return VLC_SUCCESS;
 180         }
 181         case INPUT_DEL_INFO:
 182         {
 183             char *psz_cat = (char *)va_arg( args, char * );
 184             char *psz_name = (char *)va_arg( args, char * );
 185
 186             int i_ret = input_item_DelInfo( p_input->p->p_item,
 187                                             psz_cat, psz_name );
 188
 189             if( !p_input->b_preparsing && !i_ret )
 190                 input_SendEventMetaInfo( p_input );
 191             return i_ret;
 192         }
 193         case INPUT_GET_INFO:
 194         {
 195             char *psz_cat = (char *)va_arg( args, char * );
 196             char *psz_name = (char *)va_arg( args, char * );
 197             char **ppsz_value = (char **)va_arg( args, char ** );
 198             int i_ret = VLC_EGENERIC;
 199             *ppsz_value = NULL;
 200
 201             *ppsz_value = input_item_GetInfo( p_input->p->p_item,
 202                                                   psz_cat, psz_name );
 203             return i_ret;
 204         }
 205
 206         case INPUT_SET_NAME:
 207         {
 208             char *psz_name = (char *)va_arg( args, char * );
 209
 210             if( !psz_name ) return VLC_EGENERIC;
 211
 212             input_item_SetName( p_input->p->p_item, psz_name );
 213
 214             if( !p_input->b_preparsing )
 215                 input_SendEventMetaName( p_input, psz_name );
 216             return VLC_SUCCESS;
 217         }
 218
 219         case INPUT_ADD_BOOKMARK:
 220             p_bkmk = (seekpoint_t *)va_arg( args, seekpoint_t * );
 221             p_bkmk = vlc_seekpoint_Duplicate( p_bkmk );
 222
 223             vlc_mutex_lock( &p_input->p->p_item->lock );
 224             if( !p_bkmk->psz_name )
 225             {
 226                  if( asprintf( &p_bkmk->psz_name, _("Bookmark %i"),
 227                                p_input->p->i_bookmark ) == -1 )
 228                      p_bkmk->psz_name = NULL;
 229             }
 230
 231             TAB_APPEND( p_input->p->i_bookmark, p_input->p->pp_bookmark, p_bkmk );
 232             vlc_mutex_unlock( &p_input->p->p_item->lock );
 233
 234             UpdateBookmarksOption( p_input );
 235
 236             return VLC_SUCCESS;
 237
 238         case INPUT_CHANGE_BOOKMARK:
 239             p_bkmk = (seekpoint_t *)va_arg( args, seekpoint_t * );
 240             i_bkmk = (int)va_arg( args, int );
 241
 242             vlc_mutex_lock( &p_input->p->p_item->lock );
 243             if( i_bkmk < p_input->p->i_bookmark )
 244             {
 245                 vlc_seekpoint_Delete( p_input->p->pp_bookmark[i_bkmk] );
 246                 p_input->p->pp_bookmark[i_bkmk] = vlc_seekpoint_Duplicate( p_bkmk );
 247             }
 248             vlc_mutex_unlock( &p_input->p->p_item->lock );
 249
 250             UpdateBookmarksOption( p_input );
 251
 252             return VLC_SUCCESS;
 253
 254         case INPUT_DEL_BOOKMARK:
 255             i_bkmk = (int)va_arg( args, int );
 256
 257             vlc_mutex_lock( &p_input->p->p_item->lock );
 258             if( i_bkmk < p_input->p->i_bookmark )
 259             {
 260                 p_bkmk = p_input->p->pp_bookmark[i_bkmk];
 261                 TAB_REMOVE( p_input->p->i_bookmark, p_input->p->pp_bookmark, p_bkmk );
 262                 vlc_seekpoint_Delete( p_bkmk );
 263
 264                 vlc_mutex_unlock( &p_input->p->p_item->lock );
 265
 266                 UpdateBookmarksOption( p_input );
 267
 268                 return VLC_SUCCESS;
 269             }
 270             vlc_mutex_unlock( &p_input->p->p_item->lock );
 271
 272             return VLC_EGENERIC;
 273
 274         case INPUT_GET_BOOKMARKS:
 275             ppp_bkmk = (seekpoint_t ***)va_arg( args, seekpoint_t *** );
 276             pi_bkmk = (int *)va_arg( args, int * );
 277
 278             vlc_mutex_lock( &p_input->p->p_item->lock );
 279             if( p_input->p->i_bookmark )
 280             {
 281                 int i;
 282
 283                 *pi_bkmk = p_input->p->i_bookmark;
 284                 *ppp_bkmk = malloc( sizeof(seekpoint_t *) *
 285                                     p_input->p->i_bookmark );
 286                 for( i = 0; i < p_input->p->i_bookmark; i++ )
 287                 {
 288                     (*ppp_bkmk)[i] =
 289                         vlc_seekpoint_Duplicate( p_input->p->pp_bookmark[i] );
 290                 }
 291
 292                 vlc_mutex_unlock( &p_input->p->p_item->lock );
 293                 return VLC_SUCCESS;
 294             }
 295             else
 296             {
 297                 *ppp_bkmk = NULL;
 298                 *pi_bkmk = 0;
 299
 300                 vlc_mutex_unlock( &p_input->p->p_item->lock );
 301                 return VLC_EGENERIC;
 302             }
 303             break;
 304
 305         case INPUT_CLEAR_BOOKMARKS:
 306
 307             vlc_mutex_lock( &p_input->p->p_item->lock );
 308             while( p_input->p->i_bookmark > 0 )
 309             {
 310                 p_bkmk = p_input->p->pp_bookmark[p_input->p->i_bookmark-1];
 311
 312                 TAB_REMOVE( p_input->p->i_bookmark, p_input->p->pp_bookmark,
 313                             p_bkmk );
 314                 vlc_seekpoint_Delete( p_bkmk );
 315             }
 316             vlc_mutex_unlock( &p_input->p->p_item->lock );
 317
 318             UpdateBookmarksOption( p_input );
 319             return VLC_SUCCESS;
 320
 321         case INPUT_SET_BOOKMARK:
 322             i_bkmk = (int)va_arg( args, int );
 323
 324             val.i_int = i_bkmk;
 325             input_ControlPush( p_input, INPUT_CONTROL_SET_BOOKMARK, &val );
 326
 327             return VLC_SUCCESS;
 328
 329         case INPUT_GET_BOOKMARK:
 330             p_bkmk = (seekpoint_t *)va_arg( args, seekpoint_t * );
 331
 332             vlc_mutex_lock( &p_input->p->p_item->lock );
 333             *p_bkmk = p_input->p->bookmark;
 334             vlc_mutex_unlock( &p_input->p->p_item->lock );
 335             return VLC_SUCCESS;
 336
 337         case INPUT_GET_TITLE_INFO:
 338         {
 339             input_title_t **p_title = (input_title_t **)va_arg( args, input_title_t ** );
 340             int *pi_req_title_offset = (int *) va_arg( args, int * );
 341
 342             vlc_mutex_lock( &p_input->p->p_item->lock );
 343
 344             int i_current_title = var_GetInteger( p_input, "title" );
 345             if ( *pi_req_title_offset < 0 ) /* return current title if -1 */
 346                 *pi_req_title_offset = i_current_title;
 347
 348             if( p_input->p->i_title && p_input->p->i_title > *pi_req_title_offset )
 349             {
 350                 *p_title = vlc_input_title_Duplicate( p_input->p->title[*pi_req_title_offset] );
 351                 vlc_mutex_unlock( &p_input->p->p_item->lock );
 352                 return VLC_SUCCESS;
 353             }
 354             else
 355             {
 356                 vlc_mutex_unlock( &p_input->p->p_item->lock );
 357                 return VLC_EGENERIC;
 358             }
 359         }
 360
 361         case INPUT_GET_VIDEO_FPS:
 362             pf = (double*)va_arg( args, double * );
 363
 364             vlc_mutex_lock( &p_input->p->p_item->lock );
 365             *pf = p_input->p->f_fps;
 366             vlc_mutex_unlock( &p_input->p->p_item->lock );
 367             return VLC_SUCCESS;
 368
 369         case INPUT_ADD_SLAVE:
 370             psz = (char*)va_arg( args, char * );
 371             if( psz && *psz )
 372             {
 373                 val.psz_string = strdup( psz );
 374                 input_ControlPush( p_input, INPUT_CONTROL_ADD_SLAVE, &val );
 375             }
 376             return VLC_SUCCESS;
 377
 378         case INPUT_ADD_SUBTITLE:
 379             psz = (char*)va_arg( args, char * );
 380             b_bool = (bool)va_arg( args, int );
 381
 382             if( !psz || *psz == '\0' )
 383                 return VLC_EGENERIC;
 384             if( b_bool && !subtitles_Filter( psz ) )
 385                 return VLC_EGENERIC;
 386
 387             val.psz_string = strdup( psz );
 388             input_ControlPush( p_input, INPUT_CONTROL_ADD_SUBTITLE, &val );
 389             return VLC_SUCCESS;
 390
 391         case INPUT_GET_ATTACHMENTS: /* arg1=input_attachment_t***, arg2=int*  res=can fail */
 392         {
 393             input_attachment_t ***ppp_attachment = (input_attachment_t***)va_arg( args, input_attachment_t *** );
 394             int *pi_attachment = (int*)va_arg( args, int * );
 395             int i;
 396
 397             vlc_mutex_lock( &p_input->p->p_item->lock );
 398             if( p_input->p->i_attachment <= 0 )
 399             {
 400                 vlc_mutex_unlock( &p_input->p->p_item->lock );
 401                 *ppp_attachment = NULL;
 402                 *pi_attachment = 0;
 403                 return VLC_EGENERIC;
 404             }
 405             *pi_attachment = p_input->p->i_attachment;
 406             *ppp_attachment = malloc( sizeof(input_attachment_t*) * p_input->p->i_attachment );
 407             for( i = 0; i < p_input->p->i_attachment; i++ )
 408                 (*ppp_attachment)[i] = vlc_input_attachment_Duplicate( p_input->p->attachment[i] );
 409
 410             vlc_mutex_unlock( &p_input->p->p_item->lock );
 411             return VLC_SUCCESS;
 412         }
 413
 414         case INPUT_GET_ATTACHMENT:  /* arg1=input_attachment_t**, arg2=char*  res=can fail */
 415         {
 416             input_attachment_t **pp_attachment = (input_attachment_t**)va_arg( args, input_attachment_t ** );
 417             const char *psz_name = (const char*)va_arg( args, const char * );
 418             int i;
 419
 420             vlc_mutex_lock( &p_input->p->p_item->lock );
 421             for( i = 0; i < p_input->p->i_attachment; i++ )
 422             {
 423                 if( !strcmp( p_input->p->attachment[i]->psz_name, psz_name ) )
 424                 {
 425                     *pp_attachment = vlc_input_attachment_Duplicate( p_input->p->attachment[i] );
 426                     vlc_mutex_unlock( &p_input->p->p_item->lock );
 427                     return VLC_SUCCESS;
 428                 }
 429             }
 430             *pp_attachment = NULL;
 431             vlc_mutex_unlock( &p_input->p->p_item->lock );
 432             return VLC_EGENERIC;
 433         }
 434
 435         case INPUT_SET_RECORD_STATE:
 436             b_bool = (bool)va_arg( args, int );
 437             var_SetBool( p_input, "record", b_bool );
 438             return VLC_SUCCESS;
 439
 440         case INPUT_GET_RECORD_STATE:
 441             pb_bool = (bool*)va_arg( args, bool* );
 442             *pb_bool = var_GetBool( p_input, "record" );
 443             return VLC_SUCCESS;
 444
 445         case INPUT_RESTART_ES:
 446             val.i_int = (int)va_arg( args, int );
 447             input_ControlPush( p_input, INPUT_CONTROL_RESTART_ES, &val );
 448             return VLC_SUCCESS;
 449
 450         case INPUT_GET_AOUT:
 451         {
 452             audio_output_t *p_aout = input_resource_HoldAout( p_input->p->p_resource );
 453             if( !p_aout )
 454                 return VLC_EGENERIC;
 455
 456             audio_output_t **pp_aout = (audio_output_t**)va_arg( args, audio_output_t** );
 457             *pp_aout = p_aout;
 458             return VLC_SUCCESS;
 459         }
 460
 461         case INPUT_GET_VOUTS:
 462         {
 463             vout_thread_t ***ppp_vout = (vout_thread_t***)va_arg( args, vout_thread_t*** );
 464             size_t        *pi_vout = va_arg( args, size_t * );
 465
 466             input_resource_HoldVouts( p_input->p->p_resource, ppp_vout, pi_vout );
 467             if( *pi_vout <= 0 )
 468                 return VLC_EGENERIC;
 469             return VLC_SUCCESS;
 470         }
 471
 472         case INPUT_GET_ES_OBJECTS:
 473         {
 474             const int i_id = va_arg( args, int );
 475             vlc_object_t    **pp_decoder = va_arg( args, vlc_object_t ** );
 476             vout_thread_t   **pp_vout    = va_arg( args, vout_thread_t ** );
 477             audio_output_t **pp_aout    = va_arg( args, audio_output_t ** );
 478
 479             return es_out_Control( p_input->p->p_es_out_display, ES_OUT_GET_ES_OBJECTS_BY_ID, i_id,
 480                                    pp_decoder, pp_vout, pp_aout );
 481         }
 482
 483         case INPUT_GET_PCR_SYSTEM:
 484         {
 485             mtime_t *pi_system = va_arg( args, mtime_t * );
 486             mtime_t *pi_delay  = va_arg( args, mtime_t * );
 487             return es_out_ControlGetPcrSystem( p_input->p->p_es_out_display, pi_system, pi_delay );
 488         }
 489
 490         case INPUT_MODIFY_PCR_SYSTEM:
 491         {
 492             bool b_absolute = va_arg( args, int );
 493             mtime_t i_system = va_arg( args, mtime_t );
 494             return es_out_ControlModifyPcrSystem( p_input->p->p_es_out_display, b_absolute, i_system );
 495         }
 496
 497         default:
 498             msg_Err( p_input, "unknown query in input_vaControl" );
 499             return VLC_EGENERIC;
 500     }
 501 }
 502
 503 static void UpdateBookmarksOption( input_thread_t *p_input )
 504 {
 505     vlc_mutex_lock( &p_input->p->p_item->lock );
 506
 507     /* Update the "bookmark" list */
 508     var_Change( p_input, "bookmark", VLC_VAR_CLEARCHOICES, 0, 0 );
 509     for( int i = 0; i < p_input->p->i_bookmark; i++ )
 510     {
 511         vlc_value_t val, text;
 512
 513         val.i_int = i;
 514         text.psz_string = p_input->p->pp_bookmark[i]->psz_name;
 515         var_Change( p_input, "bookmark", VLC_VAR_ADDCHOICE,
 516                     &val, &text );
 517     }
 518
 519     /* Create the "bookmarks" option value */
 520     const char *psz_format = "{name=%s,bytes=%"PRId64",time=%"PRId64"}";
 521     int i_len = strlen( "bookmarks=" );
 522     for( int i = 0; i < p_input->p->i_bookmark; i++ )
 523     {
 524         const seekpoint_t *p_bookmark = p_input->p->pp_bookmark[i];
 525
 526         i_len += snprintf( NULL, 0, psz_format,
 527                            p_bookmark->psz_name,
 528                            p_bookmark->i_byte_offset,
 529                            p_bookmark->i_time_offset/1000000 );
 530     }
 531
 532     char *psz_value = malloc( i_len + p_input->p->i_bookmark + 1 );
 533     char *psz_next = psz_value;
 534
 535     psz_next += sprintf( psz_next, "bookmarks=" );
 536     for( int i = 0; i < p_input->p->i_bookmark && psz_value != NULL; i++ )
 537     {
 538         const seekpoint_t *p_bookmark = p_input->p->pp_bookmark[i];
 539
 540         psz_next += sprintf( psz_next, psz_format,
 541                              p_bookmark->psz_name,
 542                              p_bookmark->i_byte_offset,
 543                              p_bookmark->i_time_offset/1000000 );
 544
 545         if( i < p_input->p->i_bookmark - 1)
 546             *psz_next++ = ',';
 547     }
 548     vlc_mutex_unlock( &p_input->p->p_item->lock );
 549
 550     if( psz_value )
 551         input_item_AddOption( p_input->p->p_item, psz_value, VLC_INPUT_OPTION_UNIQUE );
 552
 553     free( psz_value );
 554
 555     input_SendEventBookmark( p_input );
 556 }
 557