src/input/control.c

   1 /*****************************************************************************
   2  * control.c
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Gildas Bazin <gbazin@videolan.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 #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_ADD_INFO:
 140         {
 141             char *psz_cat = (char *)va_arg( args, char * );
 142             char *psz_name = (char *)va_arg( args, char * );
 143             char *psz_format = (char *)va_arg( args, char * );
 144
 145             char *psz_value;
 146
 147             if( vasprintf( &psz_value, psz_format, args ) == -1 )
 148                 return VLC_EGENERIC;
 149
 150             int i_ret = input_item_AddInfo( p_input->p->p_item,
 151                                             psz_cat, psz_name, "%s", psz_value );
 152             free( psz_value );
 153
 154             if( !p_input->b_preparsing && !i_ret )
 155                 input_SendEventMetaInfo( p_input );
 156             return i_ret;
 157         }
 158         case INPUT_REPLACE_INFOS:
 159         case INPUT_MERGE_INFOS:
 160         {
 161             info_category_t *p_cat = va_arg( args, info_category_t * );
 162
 163             if( i_query == INPUT_REPLACE_INFOS )
 164                 input_item_ReplaceInfos( p_input->p->p_item, p_cat );
 165             else
 166                 input_item_MergeInfos( p_input->p->p_item, p_cat );
 167
 168             if( !p_input->b_preparsing )
 169                 input_SendEventMetaInfo( p_input );
 170             return VLC_SUCCESS;
 171         }
 172         case INPUT_DEL_INFO:
 173         {
 174             char *psz_cat = (char *)va_arg( args, char * );
 175             char *psz_name = (char *)va_arg( args, char * );
 176
 177             int i_ret = input_item_DelInfo( p_input->p->p_item,
 178                                             psz_cat, psz_name );
 179
 180             if( !p_input->b_preparsing && !i_ret )
 181                 input_SendEventMetaInfo( p_input );
 182             return i_ret;
 183         }
 184         case INPUT_GET_INFO:
 185         {
 186             char *psz_cat = (char *)va_arg( args, char * );
 187             char *psz_name = (char *)va_arg( args, char * );
 188             char **ppsz_value = (char **)va_arg( args, char ** );
 189             int i_ret = VLC_EGENERIC;
 190             *ppsz_value = NULL;
 191
 192             *ppsz_value = input_item_GetInfo( p_input->p->p_item,
 193                                                   psz_cat, psz_name );
 194             return i_ret;
 195         }
 196
 197         case INPUT_SET_NAME:
 198         {
 199             char *psz_name = (char *)va_arg( args, char * );
 200
 201             if( !psz_name ) return VLC_EGENERIC;
 202
 203             input_item_SetName( p_input->p->p_item, psz_name );
 204
 205             if( !p_input->b_preparsing )
 206                 input_SendEventMetaName( p_input, psz_name );
 207             return VLC_SUCCESS;
 208         }
 209
 210         case INPUT_ADD_BOOKMARK:
 211             p_bkmk = (seekpoint_t *)va_arg( args, seekpoint_t * );
 212             p_bkmk = vlc_seekpoint_Duplicate( p_bkmk );
 213
 214             vlc_mutex_lock( &p_input->p->p_item->lock );
 215             if( !p_bkmk->psz_name )
 216             {
 217                  if( asprintf( &p_bkmk->psz_name, _("Bookmark %i"),
 218                                p_input->p->i_bookmark ) == -1 )
 219                      p_bkmk->psz_name = NULL;
 220             }
 221
 222             TAB_APPEND( p_input->p->i_bookmark, p_input->p->pp_bookmark, p_bkmk );
 223             vlc_mutex_unlock( &p_input->p->p_item->lock );
 224
 225             UpdateBookmarksOption( p_input );
 226
 227             return VLC_SUCCESS;
 228
 229         case INPUT_CHANGE_BOOKMARK:
 230             p_bkmk = (seekpoint_t *)va_arg( args, seekpoint_t * );
 231             i_bkmk = (int)va_arg( args, int );
 232
 233             vlc_mutex_lock( &p_input->p->p_item->lock );
 234             if( i_bkmk < p_input->p->i_bookmark )
 235             {
 236                 vlc_seekpoint_Delete( p_input->p->pp_bookmark[i_bkmk] );
 237                 p_input->p->pp_bookmark[i_bkmk] = vlc_seekpoint_Duplicate( p_bkmk );
 238             }
 239             vlc_mutex_unlock( &p_input->p->p_item->lock );
 240
 241             UpdateBookmarksOption( p_input );
 242
 243             return VLC_SUCCESS;
 244
 245         case INPUT_DEL_BOOKMARK:
 246             i_bkmk = (int)va_arg( args, int );
 247
 248             vlc_mutex_lock( &p_input->p->p_item->lock );
 249             if( i_bkmk < p_input->p->i_bookmark )
 250             {
 251                 p_bkmk = p_input->p->pp_bookmark[i_bkmk];
 252                 TAB_REMOVE( p_input->p->i_bookmark, p_input->p->pp_bookmark, p_bkmk );
 253                 vlc_seekpoint_Delete( p_bkmk );
 254
 255                 vlc_mutex_unlock( &p_input->p->p_item->lock );
 256
 257                 UpdateBookmarksOption( p_input );
 258
 259                 return VLC_SUCCESS;
 260             }
 261             vlc_mutex_unlock( &p_input->p->p_item->lock );
 262
 263             return VLC_EGENERIC;
 264
 265         case INPUT_GET_BOOKMARKS:
 266             ppp_bkmk = (seekpoint_t ***)va_arg( args, seekpoint_t *** );
 267             pi_bkmk = (int *)va_arg( args, int * );
 268
 269             vlc_mutex_lock( &p_input->p->p_item->lock );
 270             if( p_input->p->i_bookmark )
 271             {
 272                 int i;
 273
 274                 *pi_bkmk = p_input->p->i_bookmark;
 275                 *ppp_bkmk = malloc( sizeof(seekpoint_t *) *
 276                                     p_input->p->i_bookmark );
 277                 for( i = 0; i < p_input->p->i_bookmark; i++ )
 278                 {
 279                     (*ppp_bkmk)[i] =
 280                         vlc_seekpoint_Duplicate( p_input->p->pp_bookmark[i] );
 281                 }
 282
 283                 vlc_mutex_unlock( &p_input->p->p_item->lock );
 284                 return VLC_SUCCESS;
 285             }
 286             else
 287             {
 288                 *ppp_bkmk = NULL;
 289                 *pi_bkmk = 0;
 290
 291                 vlc_mutex_unlock( &p_input->p->p_item->lock );
 292                 return VLC_EGENERIC;
 293             }
 294             break;
 295
 296         case INPUT_CLEAR_BOOKMARKS:
 297
 298             vlc_mutex_lock( &p_input->p->p_item->lock );
 299             while( p_input->p->i_bookmark > 0 )
 300             {
 301                 p_bkmk = p_input->p->pp_bookmark[p_input->p->i_bookmark-1];
 302
 303                 TAB_REMOVE( p_input->p->i_bookmark, p_input->p->pp_bookmark,
 304                             p_bkmk );
 305                 vlc_seekpoint_Delete( p_bkmk );
 306             }
 307             vlc_mutex_unlock( &p_input->p->p_item->lock );
 308
 309             UpdateBookmarksOption( p_input );
 310             return VLC_SUCCESS;
 311
 312         case INPUT_SET_BOOKMARK:
 313             i_bkmk = (int)va_arg( args, int );
 314
 315             val.i_int = i_bkmk;
 316             input_ControlPush( p_input, INPUT_CONTROL_SET_BOOKMARK, &val );
 317
 318             return VLC_SUCCESS;
 319
 320         case INPUT_GET_BOOKMARK:
 321             p_bkmk = (seekpoint_t *)va_arg( args, seekpoint_t * );
 322
 323             vlc_mutex_lock( &p_input->p->p_item->lock );
 324             *p_bkmk = p_input->p->bookmark;
 325             vlc_mutex_unlock( &p_input->p->p_item->lock );
 326             return VLC_SUCCESS;
 327
 328         case INPUT_ADD_OPTION:
 329         {
 330             const char *psz_option = va_arg( args, const char * );
 331             const char *psz_value = va_arg( args, const char * );
 332             char *str;
 333             int i;
 334
 335             if( asprintf( &str, "%s=%s", psz_option, psz_value ) == -1 )
 336                 return VLC_ENOMEM;
 337
 338             i = input_item_AddOption( p_input->p->p_item, str,
 339                                       VLC_INPUT_OPTION_UNIQUE );
 340             free( str );
 341             return i;
 342         }
 343
 344         case INPUT_GET_VIDEO_FPS:
 345             pf = (double*)va_arg( args, double * );
 346
 347             vlc_mutex_lock( &p_input->p->p_item->lock );
 348             *pf = p_input->p->f_fps;
 349             vlc_mutex_unlock( &p_input->p->p_item->lock );
 350             return VLC_SUCCESS;
 351
 352         case INPUT_ADD_SLAVE:
 353             psz = (char*)va_arg( args, char * );
 354             if( psz && *psz )
 355             {
 356                 val.psz_string = strdup( psz );
 357                 input_ControlPush( p_input, INPUT_CONTROL_ADD_SLAVE, &val );
 358             }
 359             return VLC_SUCCESS;
 360
 361         case INPUT_ADD_SUBTITLE:
 362             psz = (char*)va_arg( args, char * );
 363             b_bool = (bool)va_arg( args, int );
 364
 365             if( !psz || *psz == '\0' )
 366                 return VLC_EGENERIC;
 367             if( b_bool && !subtitles_Filter( psz ) )
 368                 return VLC_EGENERIC;
 369
 370             val.psz_string = strdup( psz );
 371             input_ControlPush( p_input, INPUT_CONTROL_ADD_SUBTITLE, &val );
 372             return VLC_SUCCESS;
 373
 374         case INPUT_GET_ATTACHMENTS: /* arg1=input_attachment_t***, arg2=int*  res=can fail */
 375         {
 376             input_attachment_t ***ppp_attachment = (input_attachment_t***)va_arg( args, input_attachment_t *** );
 377             int *pi_attachment = (int*)va_arg( args, int * );
 378             int i;
 379
 380             vlc_mutex_lock( &p_input->p->p_item->lock );
 381             if( p_input->p->i_attachment <= 0 )
 382             {
 383                 vlc_mutex_unlock( &p_input->p->p_item->lock );
 384                 *ppp_attachment = NULL;
 385                 *pi_attachment = 0;
 386                 return VLC_EGENERIC;
 387             }
 388             *pi_attachment = p_input->p->i_attachment;
 389             *ppp_attachment = malloc( sizeof(input_attachment_t**) * p_input->p->i_attachment );
 390             for( i = 0; i < p_input->p->i_attachment; i++ )
 391                 (*ppp_attachment)[i] = vlc_input_attachment_Duplicate( p_input->p->attachment[i] );
 392
 393             vlc_mutex_unlock( &p_input->p->p_item->lock );
 394             return VLC_SUCCESS;
 395         }
 396
 397         case INPUT_GET_ATTACHMENT:  /* arg1=input_attachment_t**, arg2=char*  res=can fail */
 398         {
 399             input_attachment_t **pp_attachment = (input_attachment_t**)va_arg( args, input_attachment_t ** );
 400             const char *psz_name = (const char*)va_arg( args, const char * );
 401             int i;
 402
 403             vlc_mutex_lock( &p_input->p->p_item->lock );
 404             for( i = 0; i < p_input->p->i_attachment; i++ )
 405             {
 406                 if( !strcmp( p_input->p->attachment[i]->psz_name, psz_name ) )
 407                 {
 408                     *pp_attachment = vlc_input_attachment_Duplicate( p_input->p->attachment[i] );
 409                     vlc_mutex_unlock( &p_input->p->p_item->lock );
 410                     return VLC_SUCCESS;
 411                 }
 412             }
 413             *pp_attachment = NULL;
 414             vlc_mutex_unlock( &p_input->p->p_item->lock );
 415             return VLC_EGENERIC;
 416         }
 417
 418         case INPUT_SET_RECORD_STATE:
 419             b_bool = (bool)va_arg( args, int );
 420             var_SetBool( p_input, "record", b_bool );
 421             return VLC_SUCCESS;
 422
 423         case INPUT_GET_RECORD_STATE:
 424             pb_bool = (bool*)va_arg( args, bool* );
 425             *pb_bool = var_GetBool( p_input, "record" );
 426             return VLC_SUCCESS;
 427
 428         case INPUT_RESTART_ES:
 429             val.i_int = (int)va_arg( args, int );
 430             input_ControlPush( p_input, INPUT_CONTROL_RESTART_ES, &val );
 431             return VLC_SUCCESS;
 432
 433         case INPUT_GET_AOUT:
 434         {
 435             aout_instance_t *p_aout = input_resource_HoldAout( p_input->p->p_resource );
 436             if( !p_aout )
 437                 return VLC_EGENERIC;
 438
 439             aout_instance_t **pp_aout = (aout_instance_t**)va_arg( args, aout_instance_t** );
 440             *pp_aout = p_aout;
 441             return VLC_SUCCESS;
 442         }
 443
 444         case INPUT_GET_VOUTS:
 445         {
 446             vout_thread_t ***ppp_vout = (vout_thread_t***)va_arg( args, vout_thread_t*** );
 447             size_t        *pi_vout = va_arg( args, size_t * );
 448
 449             input_resource_HoldVouts( p_input->p->p_resource, ppp_vout, pi_vout );
 450             if( *pi_vout <= 0 )
 451                 return VLC_EGENERIC;
 452             return VLC_SUCCESS;
 453         }
 454
 455         case INPUT_GET_ES_OBJECTS:
 456         {
 457             const int i_id = va_arg( args, int );
 458             vlc_object_t    **pp_decoder = va_arg( args, vlc_object_t ** );
 459             vout_thread_t   **pp_vout    = va_arg( args, vout_thread_t ** );
 460             aout_instance_t **pp_aout    = va_arg( args, aout_instance_t ** );
 461
 462             return es_out_Control( p_input->p->p_es_out_display, ES_OUT_GET_ES_OBJECTS_BY_ID, i_id,
 463                                    pp_decoder, pp_vout, pp_aout );
 464         }
 465
 466         case INPUT_GET_PCR_SYSTEM:
 467         {
 468             mtime_t *pi_system = va_arg( args, mtime_t * );
 469             mtime_t *pi_delay  = va_arg( args, mtime_t * );
 470             return es_out_ControlGetPcrSystem( p_input->p->p_es_out_display, pi_system, pi_delay );
 471         }
 472
 473         case INPUT_MODIFY_PCR_SYSTEM:
 474         {
 475             bool b_absolute = va_arg( args, int );
 476             mtime_t i_system = va_arg( args, mtime_t );
 477             return es_out_ControlModifyPcrSystem( p_input->p->p_es_out_display, b_absolute, i_system );
 478         }
 479
 480         default:
 481             msg_Err( p_input, "unknown query in input_vaControl" );
 482             return VLC_EGENERIC;
 483     }
 484 }
 485
 486 static void UpdateBookmarksOption( input_thread_t *p_input )
 487 {
 488     vlc_mutex_lock( &p_input->p->p_item->lock );
 489
 490     /* Update the "bookmark" list */
 491     var_Change( p_input, "bookmark", VLC_VAR_CLEARCHOICES, 0, 0 );
 492     for( int i = 0; i < p_input->p->i_bookmark; i++ )
 493     {
 494         vlc_value_t val, text;
 495
 496         val.i_int = i;
 497         text.psz_string = p_input->p->pp_bookmark[i]->psz_name;
 498         var_Change( p_input, "bookmark", VLC_VAR_ADDCHOICE,
 499                     &val, &text );
 500     }
 501
 502     /* Create the "bookmarks" option value */
 503     const char *psz_format = "{name=%s,bytes=%"PRId64",time=%"PRId64"}";
 504     int i_len = strlen( "bookmarks=" );
 505     for( int i = 0; i < p_input->p->i_bookmark; i++ )
 506     {
 507         const seekpoint_t *p_bookmark = p_input->p->pp_bookmark[i];
 508
 509         i_len += snprintf( NULL, 0, psz_format,
 510                            p_bookmark->psz_name,
 511                            p_bookmark->i_byte_offset,
 512                            p_bookmark->i_time_offset/1000000 );
 513     }
 514
 515     char *psz_value = malloc( i_len + p_input->p->i_bookmark + 1 );
 516     char *psz_next = psz_value;
 517
 518     psz_next += sprintf( psz_next, "bookmarks=" );
 519     for( int i = 0; i < p_input->p->i_bookmark && psz_value != NULL; i++ )
 520     {
 521         const seekpoint_t *p_bookmark = p_input->p->pp_bookmark[i];
 522
 523         psz_next += sprintf( psz_next, psz_format,
 524                              p_bookmark->psz_name,
 525                              p_bookmark->i_byte_offset,
 526                              p_bookmark->i_time_offset/1000000 );
 527
 528         if( i < p_input->p->i_bookmark - 1)
 529             *psz_next++ = ',';
 530     }
 531     vlc_mutex_unlock( &p_input->p->p_item->lock );
 532
 533     if( psz_value )
 534         input_item_AddOption( p_input->p->p_item, psz_value, VLC_INPUT_OPTION_UNIQUE );
 535
 536     free( psz_value );
 537
 538     input_SendEventBookmark( p_input );
 539 }
 540