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vlcproc.cpp：源码内容
							/*****************************************************************************
 * vlcproc.cpp
 *****************************************************************************
 * Copyright (C) 2003-2009 the VideoLAN team
 * $Id: 3b985cf970a1af9cbd96659c175b9c3bda62d59e $
 *
 * Authors: Cyril Deguet     <asmax@via.ecp.fr>
 *          Olivier Teulière <ipkiss@via.ecp.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_aout.h>
#include <vlc_vout.h>
#include <vlc_playlist.h>
#include <vlc_window.h>
#include "vlcproc.hpp"
#include "os_factory.hpp"
#include "os_loop.hpp"
#include "os_timer.hpp"
#include "var_manager.hpp"
#include "vout_manager.hpp"
#include "theme.hpp"
#include "window_manager.hpp"
#include "../commands/async_queue.hpp"
#include "../commands/cmd_change_skin.hpp"
#include "../commands/cmd_show_window.hpp"
#include "../commands/cmd_quit.hpp"
#include "../commands/cmd_resize.hpp"
#include "../commands/cmd_vars.hpp"
#include "../commands/cmd_dialogs.hpp"
#include "../commands/cmd_update_item.hpp"
#include "../utils/var_bool.hpp"
#include <sstream>
VlcProc *VlcProc::instance( intf_thread_t *pIntf )
{
    if( pIntf->p_sys->p_vlcProc == NULL )
    {
        pIntf->p_sys->p_vlcProc = new VlcProc( pIntf );
    }
    return pIntf->p_sys->p_vlcProc;
}
void VlcProc::destroy( intf_thread_t *pIntf )
{
    if( pIntf->p_sys->p_vlcProc )
    {
        delete pIntf->p_sys->p_vlcProc;
        pIntf->p_sys->p_vlcProc = NULL;
    }
}
VlcProc::VlcProc( intf_thread_t *pIntf ): SkinObject( pIntf ),
    m_varVoutSize( pIntf ), m_varEqBands( pIntf ),
    m_pVout( NULL ), m_pAout( NULL ), m_cmdManage( this )
{
    // Create a timer to poll the status of the vlc
    OSFactory *pOsFactory = OSFactory::instance( pIntf );
    m_pTimer = pOsFactory->createOSTimer( m_cmdManage );
    m_pTimer->start( 100, false );
    // Create and register VLC variables
    VarManager *pVarManager = VarManager::instance( getIntf() );
#define REGISTER_VAR( var, type, name ) 
    var = VariablePtr( new type( getIntf() ) ); 
    pVarManager->registerVar( var, name );
    REGISTER_VAR( m_cVarRandom, VarBoolImpl, "playlist.isRandom" )
    REGISTER_VAR( m_cVarLoop, VarBoolImpl, "playlist.isLoop" )
    REGISTER_VAR( m_cVarRepeat, VarBoolImpl, "playlist.isRepeat" )
    REGISTER_VAR( m_cPlaytree, Playtree, "playtree" )
    pVarManager->registerVar( getPlaytreeVar().getPositionVarPtr(),
                              "playtree.slider" );
    pVarManager->registerVar( m_cVarRandom, "playtree.isRandom" );
    pVarManager->registerVar( m_cVarLoop, "playtree.isLoop" );
    REGISTER_VAR( m_cVarPlaying, VarBoolImpl, "vlc.isPlaying" )
    REGISTER_VAR( m_cVarStopped, VarBoolImpl, "vlc.isStopped" )
    REGISTER_VAR( m_cVarPaused, VarBoolImpl, "vlc.isPaused" )
    /* Input variables */
    pVarManager->registerVar( m_cVarRepeat, "playtree.isRepeat" );
    REGISTER_VAR( m_cVarTime, StreamTime, "time" )
    REGISTER_VAR( m_cVarSeekable, VarBoolImpl, "vlc.isSeekable" )
    REGISTER_VAR( m_cVarDvdActive, VarBoolImpl, "dvd.isActive" )
    /* Vout variables */
    REGISTER_VAR( m_cVarFullscreen, VarBoolImpl, "vlc.isFullscreen" )
    REGISTER_VAR( m_cVarHasVout, VarBoolImpl, "vlc.hasVout" )
    /* Aout variables */
    REGISTER_VAR( m_cVarHasAudio, VarBoolImpl, "vlc.hasAudio" )
    REGISTER_VAR( m_cVarVolume, Volume, "volume" )
    REGISTER_VAR( m_cVarMute, VarBoolImpl, "vlc.isMute" )
    REGISTER_VAR( m_cVarEqualizer, VarBoolImpl, "equalizer.isEnabled" )
    REGISTER_VAR( m_cVarEqPreamp, EqualizerPreamp, "equalizer.preamp" )
#undef REGISTER_VAR
    m_cVarStreamName = VariablePtr( new VarText( getIntf(), false ) );
    pVarManager->registerVar( m_cVarStreamName, "streamName" );
    m_cVarStreamURI = VariablePtr( new VarText( getIntf(), false ) );
    pVarManager->registerVar( m_cVarStreamURI, "streamURI" );
    m_cVarStreamBitRate = VariablePtr( new VarText( getIntf(), false ) );
    pVarManager->registerVar( m_cVarStreamBitRate, "bitrate" );
    m_cVarStreamSampleRate = VariablePtr( new VarText( getIntf(), false ) );
    pVarManager->registerVar( m_cVarStreamSampleRate, "samplerate" );
    // Register the equalizer bands
    for( int i = 0; i < EqualizerBands::kNbBands; i++)
    {
        stringstream ss;
        ss << "equalizer.band(" << i << ")";
        pVarManager->registerVar( m_varEqBands.getBand( i ), ss.str() );
    }
    // XXX WARNING XXX
    // The object variable callbacks are called from other VLC threads,
    // so they must put commands in the queue and NOT do anything else
    // (X11 calls are not reentrant)
    // Called when the playlist changes
    var_AddCallback( pIntf->p_sys->p_playlist, "intf-change",
                     onIntfChange, this );
    // Called when a playlist item is added
    var_AddCallback( pIntf->p_sys->p_playlist, "playlist-item-append",
                     onItemAppend, this );
    // Called when a playlist item is deleted
    // TODO: properly handle item-deleted
    var_AddCallback( pIntf->p_sys->p_playlist, "playlist-item-deleted",
                     onItemDelete, this );
    // Called when the "interface shower" wants us to show the skin
    var_AddCallback( pIntf->p_libvlc, "intf-show",
                     onIntfShow, this );
    // Called when the current played item changes
    var_AddCallback( pIntf->p_sys->p_playlist, "item-current",
                     onPlaylistChange, this );
    // Called when a playlist item changed
    var_AddCallback( pIntf->p_sys->p_playlist, "item-change",
                     onItemChange, this );
    // Called when our skins2 demux wants us to load a new skin
    var_AddCallback( pIntf, "skin-to-load", onSkinToLoad, this );
    // Called when we have an interaction dialog to display
    var_Create( pIntf, "interaction", VLC_VAR_ADDRESS );
    var_AddCallback( pIntf, "interaction", onInteraction, this );
    interaction_Register( pIntf );
    getIntf()->p_sys->p_input = NULL;
}
VlcProc::~VlcProc()
{
    m_pTimer->stop();
    delete( m_pTimer );
    if( getIntf()->p_sys->p_input )
    {
        vlc_object_release( getIntf()->p_sys->p_input );
        getIntf()->p_sys->p_input = NULL;
    }
    interaction_Unregister( getIntf() );
    var_DelCallback( getIntf()->p_sys->p_playlist, "intf-change",
                     onIntfChange, this );
    var_DelCallback( getIntf()->p_sys->p_playlist, "playlist-item-append",
                     onItemAppend, this );
    var_DelCallback( getIntf()->p_sys->p_playlist, "playlist-item-deleted",
                     onItemDelete, this );
    var_DelCallback( getIntf()->p_libvlc, "intf-show",
                     onIntfShow, this );
    var_DelCallback( getIntf()->p_sys->p_playlist, "item-current",
                     onPlaylistChange, this );
    var_DelCallback( getIntf()->p_sys->p_playlist, "item-change",
                     onItemChange, this );
    var_DelCallback( getIntf(), "skin-to-load", onSkinToLoad, this );
    var_DelCallback( getIntf(), "interaction", onInteraction, this );
}
void VlcProc::manage()
{
#ifdef WIN32
    if( !vlc_object_alive( getIntf() ) &&
        !getIntf()->p_sys->b_exitRequested )
    {
        getIntf()->p_sys->b_exitRequested = true;
        // explicitly stop the playlist
        playlist_Stop( getIntf()->p_sys->p_playlist );
        if( !VoutManager::instance( getIntf() )->hasVout() )
            getIntf()->p_sys->b_exitOK = true;
    }
    if( getIntf()->p_sys->b_exitOK )
    {
        // Get the instance of OSFactory
        OSFactory *pOsFactory = OSFactory::instance( getIntf() );
        // Exit the main OS loop
        pOsFactory->getOSLoop()->exit();
        return;
    }
#else
    // Did the user request to quit vlc ?
    if( !vlc_object_alive( getIntf() ) )
    {
        // Get the instance of OSFactory
        OSFactory *pOsFactory = OSFactory::instance( getIntf() );
        // Exit the main OS loop
        pOsFactory->getOSLoop()->exit();
        return;
    }
#endif
    refreshPlaylist();
    refreshAudio();
    refreshInput();
}
void VlcProc::CmdManage::execute()
{
    // Just forward to VlcProc
    m_pParent->manage();
}
void VlcProc::refreshAudio()
{
    char *pFilters;
    // Check if the audio output has changed
    aout_instance_t *pAout = (aout_instance_t *)vlc_object_find( getIntf(),
            VLC_OBJECT_AOUT, FIND_ANYWHERE );
    if( pAout )
    {
        if( pAout != m_pAout )
        {
            // Register the equalizer callbacks
            if( !var_AddCallback( pAout, "equalizer-bands",
                                  onEqBandsChange, this ) &&
                !var_AddCallback( pAout, "equalizer-preamp",
                                  onEqPreampChange, this ) )
            {
                m_pAout = pAout;
                //char * psz_bands = var_GetString( p_aout, "equalizer-bands" );
            }
        }
        // Get the audio filters
        pFilters = var_GetNonEmptyString( pAout, "audio-filter" );
        vlc_object_release( pAout );
    }
    else
    {
        // Get the audio filters
        pFilters = config_GetPsz( getIntf(), "audio-filter" );
    }
    // Refresh sound volume
    audio_volume_t volume;
    aout_VolumeGet( getIntf(), &volume );
    Volume *pVolume = (Volume*)m_cVarVolume.get();
    pVolume->set( (double)volume * 2.0 / AOUT_VOLUME_MAX );
    // Set the mute variable
    VarBoolImpl *pVarMute = (VarBoolImpl*)m_cVarMute.get();
    pVarMute->set( volume == 0 );
    // Refresh the equalizer variable
    VarBoolImpl *pVarEqualizer = (VarBoolImpl*)m_cVarEqualizer.get();
    pVarEqualizer->set( pFilters && strstr( pFilters, "equalizer" ) );
    free( pFilters );
}
void VlcProc::refreshPlaylist()
{
    // Refresh the random variable
    VarBoolImpl *pVarRandom = (VarBoolImpl*)m_cVarRandom.get();
    vlc_value_t val;
    var_Get( getIntf()->p_sys->p_playlist, "random", &val );
    pVarRandom->set( val.b_bool != 0 );
    // Refresh the loop variable
    VarBoolImpl *pVarLoop = (VarBoolImpl*)m_cVarLoop.get();
    var_Get( getIntf()->p_sys->p_playlist, "loop", &val );
    pVarLoop->set( val.b_bool != 0 );
    // Refresh the repeat variable
    VarBoolImpl *pVarRepeat = (VarBoolImpl*)m_cVarRepeat.get();
    var_Get( getIntf()->p_sys->p_playlist, "repeat", &val );
    pVarRepeat->set( val.b_bool != 0 );
}
void VlcProc::refreshInput()
{
    StreamTime *pTime = (StreamTime*)m_cVarTime.get();
    VarBoolImpl *pVarSeekable = (VarBoolImpl*)m_cVarSeekable.get();
    VarBoolImpl *pVarDvdActive = (VarBoolImpl*)m_cVarDvdActive.get();
    VarBoolImpl *pVarHasVout = (VarBoolImpl*)m_cVarHasVout.get();
    VarBoolImpl *pVarHasAudio = (VarBoolImpl*)m_cVarHasAudio.get();
    VarText *pBitrate = (VarText*)m_cVarStreamBitRate.get();
    VarText *pSampleRate = (VarText*)m_cVarStreamSampleRate.get();
    VarBoolImpl *pVarFullscreen = (VarBoolImpl*)m_cVarFullscreen.get();
    VarBoolImpl *pVarPlaying = (VarBoolImpl*)m_cVarPlaying.get();
    VarBoolImpl *pVarStopped = (VarBoolImpl*)m_cVarStopped.get();
    VarBoolImpl *pVarPaused = (VarBoolImpl*)m_cVarPaused.get();
    // Update the input
    if( getIntf()->p_sys->p_input == NULL )
    {
        getIntf()->p_sys->p_input =
            playlist_CurrentInput( getIntf()->p_sys->p_playlist );
    }
    else if( getIntf()->p_sys->p_input->b_dead )
    {
        vlc_object_release( getIntf()->p_sys->p_input );
        getIntf()->p_sys->p_input = NULL;
    }
    input_thread_t *pInput = getIntf()->p_sys->p_input;
    if( pInput && vlc_object_alive (pInput) )
    {
        // Refresh time variables
        vlc_value_t pos;
        var_Get( pInput, "position", &pos );
        pTime->set( pos.f_float, false );
        pVarSeekable->set( pos.f_float != 0.0 );
        // Refresh DVD detection
        vlc_value_t chapters_count;
        var_Change( pInput, "chapter", VLC_VAR_CHOICESCOUNT,
                        &chapters_count, NULL );
        pVarDvdActive->set( chapters_count.i_int > 0 );
        // Get the input bitrate
        int bitrate = var_GetInteger( pInput, "bit-rate" ) / 1000;
        pBitrate->set( UString::fromInt( getIntf(), bitrate ) );
        // Get the audio sample rate
        int sampleRate = var_GetInteger( pInput, "sample-rate" ) / 1000;
        pSampleRate->set( UString::fromInt( getIntf(), sampleRate ) );
        // Do we have audio
        vlc_value_t audio_es;
        var_Change( pInput, "audio-es", VLC_VAR_CHOICESCOUNT,
                        &audio_es, NULL );
        pVarHasAudio->set( audio_es.i_int > 0 );
        // Refresh fullscreen status
        vout_thread_t *pVout = input_GetVout( pInput );
        pVarHasVout->set( pVout != NULL );
        if( pVout )
        {
            pVarFullscreen->set( var_GetBool( pVout, "fullscreen" ) );
            vlc_object_release( pVout );
        }
        // Refresh play/pause status
        int state = var_GetInteger( pInput, "state" );
        pVarStopped->set( false );
        pVarPlaying->set( state != PAUSE_S );
        pVarPaused->set( state == PAUSE_S );
    }
    else
    {
        pVarSeekable->set( false );
        pVarDvdActive->set( false );
        pTime->set( 0, false );
        pVarFullscreen->set( false );
        pVarHasAudio->set( false );
        pVarHasVout->set( false );
        pVarStopped->set( true );
        pVarPlaying->set( false );
        pVarPaused->set( false );
    }
}
int VlcProc::onIntfChange( vlc_object_t *pObj, const char *pVariable,
                           vlc_value_t oldVal, vlc_value_t newVal,
                           void *pParam )
{
    VlcProc *pThis = (VlcProc*)pParam;
    // Update the stream variable
    pThis->updateStreamName();
    // Create a playtree notify command (for new style playtree)
    CmdPlaytreeChanged *pCmdTree = new CmdPlaytreeChanged( pThis->getIntf() );
    // Push the command in the asynchronous command queue
    AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
    pQueue->push( CmdGenericPtr( pCmdTree ) );
    return VLC_SUCCESS;
}
int VlcProc::onIntfShow( vlc_object_t *pObj, const char *pVariable,
                         vlc_value_t oldVal, vlc_value_t newVal,
                         void *pParam )
{
    if (newVal.b_bool)
    {
        VlcProc *pThis = (VlcProc*)pParam;
        // Create a raise all command
        CmdRaiseAll *pCmd = new CmdRaiseAll( pThis->getIntf(),
            pThis->getIntf()->p_sys->p_theme->getWindowManager() );
        // Push the command in the asynchronous command queue
        AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
        pQueue->push( CmdGenericPtr( pCmd ) );
    }
    return VLC_SUCCESS;
}
int VlcProc::onItemChange( vlc_object_t *pObj, const char *pVariable,
                           vlc_value_t oldVal, vlc_value_t newVal,
                           void *pParam )
{
    VlcProc *pThis = (VlcProc*)pParam;
    // Update the stream variable
    pThis->updateStreamName();
    // Create a playtree notify command
    CmdPlaytreeUpdate *pCmdTree = new CmdPlaytreeUpdate( pThis->getIntf(),
                                                         newVal.i_int );
    // Push the command in the asynchronous command queue
    AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
    pQueue->push( CmdGenericPtr( pCmdTree ), true );
    return VLC_SUCCESS;
}
int VlcProc::onItemAppend( vlc_object_t *pObj, const char *pVariable,
                           vlc_value_t oldVal, vlc_value_t newVal,
                           void *pParam )
{
    VlcProc *pThis = (VlcProc*)pParam;
    playlist_add_t *p_add = (playlist_add_t*)malloc( sizeof(
                                                playlist_add_t ) ) ;
    memcpy( p_add, newVal.p_address, sizeof( playlist_add_t ) ) ;
    CmdGenericPtr ptrTree;
    CmdPlaytreeAppend *pCmdTree = new CmdPlaytreeAppend( pThis->getIntf(),
                                                             p_add );
    ptrTree = CmdGenericPtr( pCmdTree );
    // Push the command in the asynchronous command queue
    AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
    pQueue->push( ptrTree , false );
    return VLC_SUCCESS;
}
int VlcProc::onItemDelete( vlc_object_t *pObj, const char *pVariable,
                           vlc_value_t oldVal, vlc_value_t newVal,
                           void *pParam )
{
    VlcProc *pThis = (VlcProc*)pParam;
    int i_id = newVal.i_int;
    CmdGenericPtr ptrTree;
    CmdPlaytreeDelete *pCmdTree = new CmdPlaytreeDelete( pThis->getIntf(),
                                                         i_id);
    ptrTree = CmdGenericPtr( pCmdTree );
    // Push the command in the asynchronous command queue
    AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
    pQueue->push( ptrTree , false );
    return VLC_SUCCESS;
}
int VlcProc::onPlaylistChange( vlc_object_t *pObj, const char *pVariable,
                               vlc_value_t oldVal, vlc_value_t newVal,
                               void *pParam )
{
    VlcProc *pThis = (VlcProc*)pParam;
    AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
    // Update the stream variable
    pThis->updateStreamName();
    // Create two playtree notify commands: one for old item, one for new
    CmdPlaytreeUpdate *pCmdTree = new CmdPlaytreeUpdate( pThis->getIntf(),
                                                         oldVal.i_int );
    pQueue->push( CmdGenericPtr( pCmdTree ) , true );
    pCmdTree = new CmdPlaytreeUpdate( pThis->getIntf(), newVal.i_int );
    pQueue->push( CmdGenericPtr( pCmdTree ) , true );
    return VLC_SUCCESS;
}
int VlcProc::onSkinToLoad( vlc_object_t *pObj, const char *pVariable,
                           vlc_value_t oldVal, vlc_value_t newVal,
                           void *pParam )
{
    VlcProc *pThis = (VlcProc*)pParam;
    // Create a playlist notify command
    CmdChangeSkin *pCmd =
        new CmdChangeSkin( pThis->getIntf(), newVal.psz_string );
    // Push the command in the asynchronous command queue
    AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
    pQueue->push( CmdGenericPtr( pCmd ) );
    return VLC_SUCCESS;
}
int VlcProc::onInteraction( vlc_object_t *pObj, const char *pVariable,
                            vlc_value_t oldVal, vlc_value_t newVal,
                            void *pParam )
{
    VlcProc *pThis = (VlcProc*)pParam;
    interaction_dialog_t *p_dialog = (interaction_dialog_t *)(newVal.p_address);
    CmdInteraction *pCmd = new CmdInteraction( pThis->getIntf(), p_dialog );
    AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
    pQueue->push( CmdGenericPtr( pCmd ) );
    return VLC_SUCCESS;
}
void VlcProc::updateStreamName()
{
    // Create a update item command
    CmdUpdateItem *pCmdItem = new CmdUpdateItem( getIntf(), getStreamNameVar(), getStreamURIVar() );
    // Push the command in the asynchronous command queue
    AsyncQueue *pQueue = AsyncQueue::instance( getIntf() );
    pQueue->push( CmdGenericPtr( pCmdItem ) );
}
int VlcProc::onEqBandsChange( vlc_object_t *pObj, const char *pVariable,
                              vlc_value_t oldVal, vlc_value_t newVal,
                              void *pParam )
{
    VlcProc *pThis = (VlcProc*)pParam;
    // Post a set equalizer bands command
    CmdSetEqBands *pCmd = new CmdSetEqBands( pThis->getIntf(),
                                             pThis->m_varEqBands,
                                             newVal.psz_string );
    AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
    pQueue->push( CmdGenericPtr( pCmd ) );
    return VLC_SUCCESS;
}
int VlcProc::onEqPreampChange( vlc_object_t *pObj, const char *pVariable,
                               vlc_value_t oldVal, vlc_value_t newVal,
                               void *pParam )
{
    VlcProc *pThis = (VlcProc*)pParam;
    EqualizerPreamp *pVarPreamp = (EqualizerPreamp*)(pThis->m_cVarEqPreamp.get());
    // Post a set preamp command
    CmdSetEqPreamp *pCmd = new CmdSetEqPreamp( pThis->getIntf(), *pVarPreamp,
                                              (newVal.f_float + 20.0) / 40.0 );
    AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
    pQueue->push( CmdGenericPtr( pCmd ) );
    return VLC_SUCCESS;
}

						