git.sesse.net Git - vlc/blob - modules/gui/skins2/src/vlcproc.cpp

   1 /*****************************************************************************
   2  * vlcproc.cpp
   3  *****************************************************************************
   4  * Copyright (C) 2003 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Cyril Deguet     <asmax@via.ecp.fr>
   8  *          Olivier Teuli�e <ipkiss@via.ecp.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24
  25 #include <vlc/aout.h>
  26 #include <vlc/vout.h>
  27 #include <aout_internal.h>
  28
  29 #include "vlcproc.hpp"
  30 #include "os_factory.hpp"
  31 #include "os_timer.hpp"
  32 #include "var_manager.hpp"
  33 #include "theme.hpp"
  34 #include "window_manager.hpp"
  35 #include "../commands/async_queue.hpp"
  36 #include "../commands/cmd_change_skin.hpp"
  37 #include "../commands/cmd_show_window.hpp"
  38 #include "../commands/cmd_quit.hpp"
  39 #include "../commands/cmd_resize.hpp"
  40 #include "../commands/cmd_vars.hpp"
  41 #include "../utils/var_bool.hpp"
  42 #include <sstream>
  43
  44
  45 VlcProc *VlcProc::instance( intf_thread_t *pIntf )
  46 {
  47     if( pIntf->p_sys->p_vlcProc == NULL )
  48     {
  49         pIntf->p_sys->p_vlcProc = new VlcProc( pIntf );
  50     }
  51
  52     return pIntf->p_sys->p_vlcProc;
  53 }
  54
  55
  56 void VlcProc::destroy( intf_thread_t *pIntf )
  57 {
  58     if( pIntf->p_sys->p_vlcProc )
  59     {
  60         delete pIntf->p_sys->p_vlcProc;
  61         pIntf->p_sys->p_vlcProc = NULL;
  62     }
  63 }
  64
  65
  66 VlcProc::VlcProc( intf_thread_t *pIntf ): SkinObject( pIntf ),
  67     m_varVoutSize( pIntf ), m_varEqBands( pIntf ),
  68     m_pVout( NULL ), m_pAout( NULL ), m_cmdManage( this )
  69 {
  70     // Create a timer to poll the status of the vlc
  71     OSFactory *pOsFactory = OSFactory::instance( pIntf );
  72     m_pTimer = pOsFactory->createOSTimer( m_cmdManage );
  73     m_pTimer->start( 100, false );
  74
  75     // Create and register VLC variables
  76     VarManager *pVarManager = VarManager::instance( getIntf() );
  77
  78 #define REGISTER_VAR( var, type, name ) \
  79     var = VariablePtr( new type( getIntf() ) ); \
  80     pVarManager->registerVar( var, name );
  81     REGISTER_VAR( m_cPlaylist, Playlist, "playlist" )
  82     pVarManager->registerVar( getPlaylistVar().getPositionVarPtr(),
  83                               "playlist.slider" );
  84     REGISTER_VAR( m_cVarRandom, VarBoolImpl, "playlist.isRandom" )
  85     REGISTER_VAR( m_cVarLoop, VarBoolImpl, "playlist.isLoop" )
  86     REGISTER_VAR( m_cVarRepeat, VarBoolImpl, "playlist.isRepeat" )
  87     REGISTER_VAR( m_cPlaytree, Playtree, "playtree" )
  88     pVarManager->registerVar( getPlaytreeVar().getPositionVarPtr(),
  89                               "playtree.slider" );
  90     pVarManager->registerVar( m_cVarRandom, "playtree.isRandom" );
  91     pVarManager->registerVar( m_cVarLoop, "playtree.isLoop" );
  92     pVarManager->registerVar( m_cVarRepeat, "playtree.isRepeat" );
  93     REGISTER_VAR( m_cVarTime, StreamTime, "time" )
  94     REGISTER_VAR( m_cVarVolume, Volume, "volume" )
  95     REGISTER_VAR( m_cVarMute, VarBoolImpl, "vlc.isMute" )
  96     REGISTER_VAR( m_cVarPlaying, VarBoolImpl, "vlc.isPlaying" )
  97     REGISTER_VAR( m_cVarStopped, VarBoolImpl, "vlc.isStopped" )
  98     REGISTER_VAR( m_cVarPaused, VarBoolImpl, "vlc.isPaused" )
  99     REGISTER_VAR( m_cVarSeekable, VarBoolImpl, "vlc.isSeekable" )
 100     REGISTER_VAR( m_cVarEqualizer, VarBoolImpl, "equalizer.isEnabled" )
 101     REGISTER_VAR( m_cVarEqPreamp, EqualizerPreamp, "equalizer.preamp" )
 102 #undef REGISTER_VAR
 103     m_cVarStreamName = VariablePtr( new VarText( getIntf(), false ) );
 104     pVarManager->registerVar( m_cVarStreamName, "streamName" );
 105     m_cVarStreamURI = VariablePtr( new VarText( getIntf(), false ) );
 106     pVarManager->registerVar( m_cVarStreamURI, "streamURI" );
 107
 108     // Register the equalizer bands
 109     for( int i = 0; i < EqualizerBands::kNbBands; i++)
 110     {
 111         stringstream ss;
 112         ss << "equalizer.band(" << i << ")";
 113         pVarManager->registerVar( m_varEqBands.getBand( i ), ss.str() );
 114     }
 115
 116     // XXX WARNING XXX
 117     // The object variable callbacks are called from other VLC threads,
 118     // so they must put commands in the queue and NOT do anything else
 119     // (X11 calls are not reentrant)
 120
 121     // Called when the playlist changes
 122     var_AddCallback( pIntf->p_sys->p_playlist, "intf-change",
 123                      onIntfChange, this );
 124     // Called when a playlist item is added
 125     // TODO: properly handle item-append
 126     var_AddCallback( pIntf->p_sys->p_playlist, "item-append",
 127                      onIntfChange, this );
 128     // Called when a playlist item is deleted
 129     // TODO: properly handle item-deleted
 130     var_AddCallback( pIntf->p_sys->p_playlist, "item-deleted",
 131                      onIntfChange, this );
 132     // Called when the "interface shower" wants us to show the skin
 133     var_AddCallback( pIntf->p_sys->p_playlist, "intf-show",
 134                      onIntfShow, this );
 135     // Called when the current played item changes
 136     var_AddCallback( pIntf->p_sys->p_playlist, "playlist-current",
 137                      onPlaylistChange, this );
 138     // Called when a playlist item changed
 139     var_AddCallback( pIntf->p_sys->p_playlist, "item-change",
 140                      onItemChange, this );
 141     // Called when our skins2 demux wants us to load a new skin
 142     var_AddCallback( pIntf, "skin-to-load", onSkinToLoad, this );
 143
 144     // Callbacks for vout requests
 145     getIntf()->pf_request_window = &getWindow;
 146     getIntf()->pf_release_window = &releaseWindow;
 147     getIntf()->pf_control_window = &controlWindow;
 148
 149     getIntf()->p_sys->p_input = NULL;
 150 }
 151
 152
 153 VlcProc::~VlcProc()
 154 {
 155     m_pTimer->stop();
 156     delete( m_pTimer );
 157     if( getIntf()->p_sys->p_input )
 158     {
 159         vlc_object_release( getIntf()->p_sys->p_input );
 160     }
 161
 162     // Callbacks for vout requests
 163     getIntf()->pf_request_window = NULL;
 164     getIntf()->pf_release_window = NULL;
 165     getIntf()->pf_control_window = NULL;
 166
 167     var_DelCallback( getIntf()->p_sys->p_playlist, "intf-change",
 168                      onIntfChange, this );
 169     var_DelCallback( getIntf()->p_sys->p_playlist, "item-append",
 170                      onIntfChange, this );
 171     var_DelCallback( getIntf()->p_sys->p_playlist, "item-deleted",
 172                      onIntfChange, this );
 173     var_DelCallback( getIntf()->p_sys->p_playlist, "intf-show",
 174                      onIntfShow, this );
 175     var_DelCallback( getIntf()->p_sys->p_playlist, "playlist-current",
 176                      onPlaylistChange, this );
 177     var_DelCallback( getIntf()->p_sys->p_playlist, "item-change",
 178                      onItemChange, this );
 179     var_DelCallback( getIntf(), "skin-to-load", onSkinToLoad, this );
 180 }
 181
 182
 183 void VlcProc::registerVoutWindow( void *pVoutWindow )
 184 {
 185     m_handleSet.insert( pVoutWindow );
 186     // Reparent the vout window
 187     if( m_pVout )
 188     {
 189         if( vout_Control( m_pVout, VOUT_REPARENT ) != VLC_SUCCESS )
 190             vout_Control( m_pVout, VOUT_CLOSE );
 191     }
 192 }
 193
 194
 195 void VlcProc::unregisterVoutWindow( void *pVoutWindow )
 196 {
 197     m_handleSet.erase( pVoutWindow );
 198 }
 199
 200
 201 void VlcProc::dropVout()
 202 {
 203     if( m_pVout )
 204     {
 205         if( vout_Control( m_pVout, VOUT_REPARENT ) != VLC_SUCCESS )
 206             vout_Control( m_pVout, VOUT_CLOSE );
 207         m_pVout = NULL;
 208     }
 209 }
 210
 211
 212 void VlcProc::manage()
 213 {
 214     // Did the user requested to quit vlc ?
 215     if( getIntf()->b_die || getIntf()->p_vlc->b_die )
 216     {
 217         CmdQuit *pCmd = new CmdQuit( getIntf() );
 218         AsyncQueue *pQueue = AsyncQueue::instance( getIntf() );
 219         pQueue->push( CmdGenericPtr( pCmd ) );
 220     }
 221
 222     // Get the VLC variables
 223     StreamTime *pTime = (StreamTime*)m_cVarTime.get();
 224     VarBoolImpl *pVarPlaying = (VarBoolImpl*)m_cVarPlaying.get();
 225     VarBoolImpl *pVarStopped = (VarBoolImpl*)m_cVarStopped.get();
 226     VarBoolImpl *pVarPaused = (VarBoolImpl*)m_cVarPaused.get();
 227     VarBoolImpl *pVarSeekable = (VarBoolImpl*)m_cVarSeekable.get();
 228     VarBoolImpl *pVarRandom = (VarBoolImpl*)m_cVarRandom.get();
 229     VarBoolImpl *pVarLoop = (VarBoolImpl*)m_cVarLoop.get();
 230     VarBoolImpl *pVarRepeat = (VarBoolImpl*)m_cVarRepeat.get();
 231
 232     // Refresh audio variables
 233     refreshAudio();
 234
 235    // Update the input
 236     if( getIntf()->p_sys->p_input == NULL )
 237     {
 238         getIntf()->p_sys->p_input = (input_thread_t *)vlc_object_find(
 239             getIntf(), VLC_OBJECT_INPUT, FIND_ANYWHERE );
 240     }
 241     else if( getIntf()->p_sys->p_input->b_dead )
 242     {
 243         vlc_object_release( getIntf()->p_sys->p_input );
 244         getIntf()->p_sys->p_input = NULL;
 245     }
 246
 247     input_thread_t *pInput = getIntf()->p_sys->p_input;
 248
 249     if( pInput && !pInput->b_die )
 250     {
 251         // Refresh time variables
 252         vlc_value_t pos;
 253         var_Get( pInput, "position", &pos );
 254         pTime->set( pos.f_float, false );
 255
 256         // Get the status of the playlist
 257         playlist_status_t status =
 258             getIntf()->p_sys->p_playlist->status.i_status;
 259
 260         pVarPlaying->set( status == PLAYLIST_RUNNING );
 261         pVarStopped->set( status == PLAYLIST_STOPPED );
 262         pVarPaused->set( status == PLAYLIST_PAUSED );
 263
 264         pVarSeekable->set( pos.f_float != 0.0 );
 265     }
 266     else
 267     {
 268         pVarPlaying->set( false );
 269         pVarPaused->set( false );
 270         pVarStopped->set( true );
 271         pVarSeekable->set( false );
 272         pTime->set( 0, false );
 273     }
 274
 275     // Refresh the random variable
 276     vlc_value_t val;
 277     var_Get( getIntf()->p_sys->p_playlist, "random", &val );
 278     pVarRandom->set( val.b_bool != 0 );
 279
 280     // Refresh the loop variable
 281     var_Get( getIntf()->p_sys->p_playlist, "loop", &val );
 282     pVarLoop->set( val.b_bool != 0 );
 283
 284     // Refresh the repeat variable
 285     var_Get( getIntf()->p_sys->p_playlist, "repeat", &val );
 286     pVarRepeat->set( val.b_bool != 0 );
 287 }
 288
 289
 290 void VlcProc::CmdManage::execute()
 291 {
 292     // Just forward to VlcProc
 293     m_pParent->manage();
 294 }
 295
 296
 297 void VlcProc::refreshAudio()
 298 {
 299     char *pFilters = NULL;
 300
 301     // Check if the audio output has changed
 302     aout_instance_t *pAout = (aout_instance_t *)vlc_object_find( getIntf(),
 303             VLC_OBJECT_AOUT, FIND_ANYWHERE );
 304     if( pAout )
 305     {
 306         if( pAout != m_pAout )
 307         {
 308             // Register the equalizer callbacks
 309             if( !var_AddCallback( pAout, "equalizer-bands",
 310                                   onEqBandsChange, this ) &&
 311                 !var_AddCallback( pAout, "equalizer-preamp",
 312                                   onEqPreampChange, this ) )
 313             {
 314                 m_pAout = pAout;
 315                 //char * psz_bands = var_GetString( p_aout, "equalizer-bands" );
 316             }
 317         }
 318         // Get the audio filters
 319         pFilters = var_GetString( pAout, "audio-filter" );
 320         vlc_object_release( pAout );
 321     }
 322     else
 323     {
 324         // Get the audio filters
 325         pFilters = config_GetPsz( getIntf(), "audio-filter" );
 326     }
 327
 328     // Refresh sound volume
 329     audio_volume_t volume;
 330     aout_VolumeGet( getIntf(), &volume );
 331     Volume *pVolume = (Volume*)m_cVarVolume.get();
 332     pVolume->set( (double)volume * 2.0 / AOUT_VOLUME_MAX );
 333
 334     // Set the mute variable
 335     VarBoolImpl *pVarMute = (VarBoolImpl*)m_cVarMute.get();
 336     pVarMute->set( volume == 0 );
 337
 338     // Refresh the equalizer variable
 339     VarBoolImpl *pVarEqualizer = (VarBoolImpl*)m_cVarEqualizer.get();
 340     pVarEqualizer->set( pFilters && strstr( pFilters, "equalizer" ) );
 341 }
 342
 343
 344 int VlcProc::onIntfChange( vlc_object_t *pObj, const char *pVariable,
 345                            vlc_value_t oldVal, vlc_value_t newVal,
 346                            void *pParam )
 347 {
 348     VlcProc *pThis = (VlcProc*)pParam;
 349
 350     // Update the stream variable
 351     playlist_t *p_playlist = (playlist_t*)pObj;
 352     pThis->updateStreamName(p_playlist);
 353
 354     // Create a playlist notify command
 355     CmdNotifyPlaylist *pCmd = new CmdNotifyPlaylist( pThis->getIntf() );
 356     // Create a playtree notify command
 357     CmdPlaytreeChanged *pCmdTree = new CmdPlaytreeChanged( pThis->getIntf() );
 358
 359     // Push the command in the asynchronous command queue
 360     AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
 361     pQueue->push( CmdGenericPtr( pCmd ) );
 362     pQueue->push( CmdGenericPtr( pCmdTree ) );
 363
 364     return VLC_SUCCESS;
 365 }
 366
 367
 368 int VlcProc::onIntfShow( vlc_object_t *pObj, const char *pVariable,
 369                          vlc_value_t oldVal, vlc_value_t newVal,
 370                          void *pParam )
 371 {
 372     if (newVal.i_int)
 373     {
 374         VlcProc *pThis = (VlcProc*)pParam;
 375
 376         // Create a raise all command
 377         CmdRaiseAll *pCmd = new CmdRaiseAll( pThis->getIntf(),
 378             pThis->getIntf()->p_sys->p_theme->getWindowManager() );
 379
 380         // Push the command in the asynchronous command queue
 381         AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
 382         pQueue->push( CmdGenericPtr( pCmd ) );
 383     }
 384
 385     return VLC_SUCCESS;
 386 }
 387
 388
 389 int VlcProc::onItemChange( vlc_object_t *pObj, const char *pVariable,
 390                            vlc_value_t oldVal, vlc_value_t newVal,
 391                            void *pParam )
 392 {
 393     VlcProc *pThis = (VlcProc*)pParam;
 394
 395     // Update the stream variable
 396     playlist_t *p_playlist = (playlist_t*)pObj;
 397     pThis->updateStreamName(p_playlist);
 398
 399     // Create a playlist notify command
 400     // TODO: selective update
 401     CmdNotifyPlaylist *pCmd = new CmdNotifyPlaylist( pThis->getIntf() );
 402     // Create a playtree notify command
 403     CmdPlaytreeUpdate *pCmdTree = new CmdPlaytreeUpdate( pThis->getIntf(),
 404                                                          newVal.i_int );
 405
 406     // Push the command in the asynchronous command queue
 407     AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
 408     pQueue->push( CmdGenericPtr( pCmd ) );
 409     pQueue->push( CmdGenericPtr( pCmdTree ), false );
 410
 411     return VLC_SUCCESS;
 412 }
 413
 414
 415 int VlcProc::onPlaylistChange( vlc_object_t *pObj, const char *pVariable,
 416                                vlc_value_t oldVal, vlc_value_t newVal,
 417                                void *pParam )
 418 {
 419     VlcProc *pThis = (VlcProc*)pParam;
 420
 421     AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
 422
 423     // Update the stream variable
 424     playlist_t *p_playlist = (playlist_t*)pObj;
 425     pThis->updateStreamName(p_playlist);
 426
 427     // Create a playlist notify command
 428     // TODO: selective update
 429     CmdNotifyPlaylist *pCmd = new CmdNotifyPlaylist( pThis->getIntf() );
 430     // Create a playtree notify command
 431     CmdPlaytreeChanged *pCmdTree = new CmdPlaytreeChanged( pThis->getIntf() );
 432
 433     // Push the command in the asynchronous command queue
 434     pQueue->push( CmdGenericPtr( pCmd ) );
 435     pQueue->push( CmdGenericPtr( pCmdTree ) );
 436
 437     return VLC_SUCCESS;
 438 }
 439
 440
 441 int VlcProc::onSkinToLoad( vlc_object_t *pObj, const char *pVariable,
 442                            vlc_value_t oldVal, vlc_value_t newVal,
 443                            void *pParam )
 444 {
 445     VlcProc *pThis = (VlcProc*)pParam;
 446
 447     // Create a playlist notify command
 448     CmdChangeSkin *pCmd =
 449         new CmdChangeSkin( pThis->getIntf(), newVal.psz_string );
 450
 451     // Push the command in the asynchronous command queue
 452     AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
 453     pQueue->push( CmdGenericPtr( pCmd ) );
 454
 455     return VLC_SUCCESS;
 456 }
 457
 458
 459 void VlcProc::updateStreamName( playlist_t *p_playlist )
 460 {
 461     if( p_playlist->p_input )
 462     {
 463         VarText &rStreamName = getStreamNameVar();
 464         VarText &rStreamURI = getStreamURIVar();
 465         // XXX: we should not need to access p_input->psz_source directly, a
 466         // getter should be provided by VLC core
 467         string name = p_playlist->p_input->input.p_item->psz_name;
 468         // XXX: This should be done in VLC core, not here...
 469         // Remove path information if any
 470         OSFactory *pFactory = OSFactory::instance( getIntf() );
 471         string::size_type pos = name.rfind( pFactory->getDirSeparator() );
 472         if( pos != string::npos )
 473         {
 474             name = name.substr( pos + 1, name.size() - pos + 1 );
 475         }
 476         UString srcName( getIntf(), name.c_str() );
 477         UString srcURI( getIntf(),
 478                          p_playlist->p_input->input.p_item->psz_uri );
 479
 480         // Create commands to update the stream variables
 481         CmdSetText *pCmd1 = new CmdSetText( getIntf(), rStreamName, srcName );
 482         CmdSetText *pCmd2 = new CmdSetText( getIntf(), rStreamURI, srcURI );
 483         // Push the commands in the asynchronous command queue
 484         AsyncQueue *pQueue = AsyncQueue::instance( getIntf() );
 485         pQueue->push( CmdGenericPtr( pCmd1 ), false );
 486         pQueue->push( CmdGenericPtr( pCmd2 ), false );
 487     }
 488 }
 489
 490
 491 void *VlcProc::getWindow( intf_thread_t *pIntf, vout_thread_t *pVout,
 492                           int *pXHint, int *pYHint,
 493                           unsigned int *pWidthHint,
 494                           unsigned int *pHeightHint )
 495 {
 496     VlcProc *pThis = pIntf->p_sys->p_vlcProc;
 497     pThis->m_pVout = pVout;
 498     if( pThis->m_handleSet.empty() )
 499     {
 500         return NULL;
 501     }
 502     else
 503     {
 504         // Get the window handle
 505         void *pWindow = *pThis->m_handleSet.begin();
 506         // Post a resize vout command
 507         CmdResizeVout *pCmd = new CmdResizeVout( pThis->getIntf(), pWindow,
 508                                                  *pWidthHint, *pHeightHint );
 509         AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
 510         pQueue->push( CmdGenericPtr( pCmd ) );
 511         return pWindow;
 512     }
 513 }
 514
 515
 516 void VlcProc::releaseWindow( intf_thread_t *pIntf, void *pWindow )
 517 {
 518     VlcProc *pThis = pIntf->p_sys->p_vlcProc;
 519     pThis->m_pVout = NULL;
 520 }
 521
 522
 523 int VlcProc::controlWindow( intf_thread_t *pIntf, void *pWindow,
 524                             int query, va_list args )
 525 {
 526     VlcProc *pThis = pIntf->p_sys->p_vlcProc;
 527
 528     switch( query )
 529     {
 530         case VOUT_SET_SIZE:
 531         {
 532             if( pThis->m_pVout )
 533             {
 534                 unsigned int i_width  = va_arg( args, unsigned int );
 535                 unsigned int i_height = va_arg( args, unsigned int );
 536                 if( !i_width ) i_width = pThis->m_pVout->i_window_width;
 537                 if( !i_height ) i_height = pThis->m_pVout->i_window_height;
 538
 539                 // Post a resize vout command
 540                 CmdResizeVout *pCmd =
 541                     new CmdResizeVout( pThis->getIntf(), pWindow,
 542                                        i_width, i_height );
 543                 AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
 544                 pQueue->push( CmdGenericPtr( pCmd ) );
 545             }
 546         }
 547
 548         default:
 549             msg_Dbg( pIntf, "control query not supported" );
 550             break;
 551     }
 552
 553     return VLC_SUCCESS;
 554 }
 555
 556
 557 int VlcProc::onEqBandsChange( vlc_object_t *pObj, const char *pVariable,
 558                               vlc_value_t oldVal, vlc_value_t newVal,
 559                               void *pParam )
 560 {
 561     VlcProc *pThis = (VlcProc*)pParam;
 562
 563     // Post a set equalizer bands command
 564     CmdSetEqBands *pCmd = new CmdSetEqBands( pThis->getIntf(),
 565                                              pThis->m_varEqBands,
 566                                              newVal.psz_string );
 567     AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
 568     pQueue->push( CmdGenericPtr( pCmd ) );
 569
 570     return VLC_SUCCESS;
 571 }
 572
 573
 574 int VlcProc::onEqPreampChange( vlc_object_t *pObj, const char *pVariable,
 575                                vlc_value_t oldVal, vlc_value_t newVal,
 576                                void *pParam )
 577 {
 578     VlcProc *pThis = (VlcProc*)pParam;
 579     EqualizerPreamp *pVarPreamp = (EqualizerPreamp*)(pThis->m_cVarEqPreamp.get());
 580
 581     // Post a set preamp command
 582     CmdSetEqPreamp *pCmd = new CmdSetEqPreamp( pThis->getIntf(), *pVarPreamp,
 583                                               (newVal.f_float + 20.0) / 40.0 );
 584     AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
 585     pQueue->push( CmdGenericPtr( pCmd ) );
 586
 587     return VLC_SUCCESS;
 588 }
 589