timer.cpp

/*****************************************************************************
 * timer.cpp : wxWindows plugin for vlc
 *****************************************************************************
 * Copyright (C) 2000-2005 the VideoLAN team
 * $Id: timer.cpp 11981 2005-08-03 15:03:23Z xtophe $
 *
 * Authors: Gildas Bazin <[email protected]>
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <stdlib.h>                                      /* malloc(), free() */
#include <errno.h>                                                 /* ENOMEM */
#include <string.h>                                            /* strerror() */
#include <stdio.h>

#include <vlc/vlc.h>
#include <vlc/aout.h>
#include <vlc/intf.h>

#include "vlc_meta.h"

#include "wxwidgets.h"
#include <wx/timer.h>

//void DisplayStreamDate( wxControl *, intf_thread_t *, int );

/* Callback prototypes */
static int PopupMenuCB( vlc_object_t *p_this, const char *psz_variable,
                        vlc_value_t old_val, vlc_value_t new_val, void *param );
static int IntfShowCB( vlc_object_t *p_this, const char *psz_variable,
                       vlc_value_t old_val, vlc_value_t new_val, void *param );

/*****************************************************************************
 * Constructor.
 *****************************************************************************/
Timer::Timer( intf_thread_t *_p_intf, Interface *_p_main_interface )
{
    p_intf = _p_intf;
    p_main_interface = _p_main_interface;
    b_init = 0;
    i_old_playing_status = PAUSE_S;
    i_old_rate = INPUT_RATE_DEFAULT;

    /* Register callback for the intf-popupmenu variable */
    playlist_t *p_playlist =
        (playlist_t *)vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
                                       FIND_ANYWHERE );
    if( p_playlist != NULL )
    {
        var_AddCallback( p_playlist, "intf-popupmenu", PopupMenuCB, p_intf );
        var_AddCallback( p_playlist, "intf-show", IntfShowCB, p_intf );
        vlc_object_release( p_playlist );
    }

    Start( 100 /*milliseconds*/, wxTIMER_CONTINUOUS );
}

Timer::~Timer()
{
    /* Unregister callback */
    playlist_t *p_playlist =
        (playlist_t *)vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
                                       FIND_ANYWHERE );
    if( p_playlist != NULL )
    {
        var_DelCallback( p_playlist, "intf-popupmenu", PopupMenuCB, p_intf );
        var_DelCallback( p_playlist, "intf-show", IntfShowCB, p_intf );
        vlc_object_release( p_playlist );
    }

    vlc_mutex_lock( &p_intf->change_lock );
    if( p_intf->p_sys->p_input ) vlc_object_release( p_intf->p_sys->p_input );
    p_intf->p_sys->p_input = NULL;
    vlc_mutex_unlock( &p_intf->change_lock );
}

/*****************************************************************************
 * Private methods.
 *****************************************************************************/

/*****************************************************************************
 * Manage: manage main thread messages
 *****************************************************************************
 * In this function, called approx. 10 times a second, we check what the
 * main program wanted to tell us.
 *****************************************************************************/
void Timer::Notify()
{
#if defined( __WXMSW__ ) /* Work-around a bug with accelerators */
    if( !b_init )
    {
        p_main_interface->Init();
        b_init = VLC_TRUE;
    }
#endif

    vlc_mutex_lock( &p_intf->change_lock );

    /* Update the input */
    if( p_intf->p_sys->p_input == NULL )
    {
        playlist_t *p_playlist =
            (playlist_t *)vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
                                           FIND_ANYWHERE );
        if( p_playlist != NULL )
        {
            LockPlaylist( p_intf->p_sys, p_playlist );
            p_intf->p_sys->p_input = p_playlist->p_input;
            if( p_intf->p_sys->p_input )
                vlc_object_yield( p_intf->p_sys->p_input );
            UnlockPlaylist( p_intf->p_sys, p_playlist );
            vlc_object_release( p_playlist );
        }

        /* Refresh interface */
        if( p_intf->p_sys->p_input )
        {
            p_main_interface->slider->SetValue( 0 );

            char *psz_now_playing = vlc_input_item_GetInfo(
                p_intf->p_sys->p_input->input.p_item,
                _("Meta-information"), _(VLC_META_NOW_PLAYING) );
            if( psz_now_playing && *psz_now_playing )
            {
                p_main_interface->statusbar->SetStatusText(
                    wxString(wxU(psz_now_playing)) + wxT( " - " ) +
                    wxU(p_intf->p_sys->p_input->input.p_item->psz_name), 2 );
            }
            else
            {
                p_main_interface->statusbar->SetStatusText(
                    wxU(p_intf->p_sys->p_input->input.p_item->psz_name), 2 );
            }
            free( psz_now_playing );

            p_main_interface->TogglePlayButton( PLAYING_S );
#ifdef wxHAS_TASK_BAR_ICON
            if( p_main_interface->p_systray )
            {
                p_main_interface->p_systray->UpdateTooltip( wxU(p_intf->p_sys->p_input->input.p_item->psz_name) + wxString(wxT(" - ")) + wxU(_("Playing")));
            }
#endif
            i_old_playing_status = PLAYING_S;
        }
    }
    else if( p_intf->p_sys->p_input->b_dead )
    {
        //controls auto-hide after a timer
        p_main_interface->m_controls_timer.Start(200, wxTIMER_ONE_SHOT);

        p_main_interface->TogglePlayButton( PAUSE_S );
        i_old_playing_status = PAUSE_S;

        p_main_interface->statusbar->SetStatusText( wxT(""), 0 );
        p_main_interface->statusbar->SetStatusText( wxT(""), 2 );

#ifdef wxHAS_TASK_BAR_ICON
        if( p_main_interface->p_systray )
        {
            p_main_interface->p_systray->UpdateTooltip( wxString(wxT("VLC media player - ")) + wxU(_("Stopped")) );
        }
#endif
        vlc_object_release( p_intf->p_sys->p_input );
        p_intf->p_sys->p_input = NULL;
    }

    if( p_intf->p_sys->p_input )
    {
        input_thread_t *p_input = p_intf->p_sys->p_input;
        vlc_value_t val;

        if( !p_input->b_die )
        {
            vlc_value_t pos;

            //prevent the controls from auto-hiding
            p_main_interface->m_controls_timer.Stop();

            /* New input or stream map change */
            p_intf->p_sys->b_playing = 1;

            /* Update the item name */
            char *psz_now_playing = vlc_input_item_GetInfo(
                p_intf->p_sys->p_input->input.p_item,
                _("Meta-information"), _(VLC_META_NOW_PLAYING) );
            if( psz_now_playing && *psz_now_playing )
            {
                p_main_interface->statusbar->SetStatusText(
                    wxString(wxU(psz_now_playing)) + wxT( " - " ) +
                    wxU(p_intf->p_sys->p_input->input.p_item->psz_name), 2 );
            }
            else
            {
                p_main_interface->statusbar->SetStatusText(
                    wxU(p_intf->p_sys->p_input->input.p_item->psz_name), 2 );
            }
            free( psz_now_playing );

            /* Manage the slider */
            var_Get( p_input, "position", &pos );

            var_Change( p_input, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
            if( val.i_int > 0 && !p_main_interface->disc_frame->IsShown() )
            {
                vlc_value_t val;

                    #define HELP_MENU N_("Menu")
                    #define HELP_PCH N_("Previous chapter")
                    #define HELP_NCH N_("Next chapter")
                    #define HELP_PTR N_("Previous track")
                    #define HELP_NTR N_("Next track")

                var_Change( p_input, "chapter", VLC_VAR_CHOICESCOUNT, &val,
                            NULL );

                if( val.i_int > 0 )
                {
                    p_main_interface->disc_menu_button->Show();
                    p_main_interface->disc_sizer->Show(
                        p_main_interface->disc_menu_button );
                    p_main_interface->disc_sizer->Layout();
                    p_main_interface->disc_sizer->Fit(
                        p_main_interface->disc_frame );
                    p_main_interface->disc_menu_button->SetToolTip(
                        wxU(_( HELP_MENU ) ) );
                    p_main_interface->disc_prev_button->SetToolTip(
                        wxU(_( HELP_PCH ) ) );
                    p_main_interface->disc_next_button->SetToolTip(
                        wxU(_( HELP_NCH ) ) );
                }
                else
                {
                    p_main_interface->disc_menu_button->Hide();
                    p_main_interface->disc_sizer->Hide(
                        p_main_interface->disc_menu_button );

                    p_main_interface->disc_prev_button->SetToolTip(
                        wxU(_( HELP_PTR ) ) );
                    p_main_interface->disc_next_button->SetToolTip(
                        wxU(_( HELP_NTR ) ) );
                }

                p_main_interface->ShowDiscFrame();
            }
            else if( val.i_int == 0 && p_main_interface->disc_frame->IsShown() )
            {
                p_main_interface->HideDiscFrame();
            }


            if( pos.f_float > 0.0 &&
                !p_main_interface->slider_frame->IsShown() )
            {
                /* Show the slider if it's position is significant */
                p_main_interface->ShowSlider();
            }
            else if( pos.f_float <= 0.0 )
            {
                p_main_interface->m_slider_timer.Start(200, wxTIMER_ONE_SHOT);
            }

            if( p_intf->p_sys->b_playing &&
                p_main_interface->slider_frame->IsShown() )
            {
                /* Update the slider if the user isn't dragging it. */
                if( p_intf->p_sys->b_slider_free )
                {
                    char psz_time[ MSTRTIME_MAX_SIZE ];
                    char psz_total[ MSTRTIME_MAX_SIZE ];
                    vlc_value_t time;
                    mtime_t i_seconds;

                    /* Update the value */
                    if( pos.f_float >= 0.0 )
                    {
                        p_intf->p_sys->i_slider_pos =
                            (int)(SLIDER_MAX_POS * pos.f_float);

                        p_main_interface->slider->SetValue(
                            p_intf->p_sys->i_slider_pos );

                        var_Get( p_intf->p_sys->p_input, "time", &time );
                        i_seconds = time.i_time / 1000000;
                        secstotimestr ( psz_time, i_seconds );

                        var_Get( p_intf->p_sys->p_input, "length",  &time );
                        i_seconds = time.i_time / 1000000;
                        secstotimestr ( psz_total, i_seconds );

                        p_main_interface->statusbar->SetStatusText(
                            wxU(psz_time) + wxString(wxT(" / ")) +
                            wxU(psz_total), 0 );
                    }
                }
            }

            /* Take care of the volume, etc... */
            p_main_interface->Update();

            /* Manage Playing status */
            var_Get( p_input, "state", &val );
            if( i_old_playing_status != val.i_int )
            {
                if( val.i_int == PAUSE_S )
                {
                    p_main_interface->TogglePlayButton( PAUSE_S );
                }
                else
                {
                    p_main_interface->TogglePlayButton( PLAYING_S );
                }
#ifdef wxHAS_TASK_BAR_ICON
                if( p_main_interface->p_systray )
                {
                    if( val.i_int == PAUSE_S )
                    {
                        p_main_interface->p_systray->UpdateTooltip( wxU(p_intf->p_sys->p_input->input.p_item->psz_name) + wxString(wxT(" - ")) + wxU(_("Paused")));
                    }
                    else
                    {
                        p_main_interface->p_systray->UpdateTooltip( wxU(p_intf->p_sys->p_input->input.p_item->psz_name) + wxString(wxT(" - ")) + wxU(_("Playing")));
                    }
                }
#endif
                i_old_playing_status = val.i_int;
            }

            /* Manage Speed status */
            var_Get( p_input, "rate", &val );
            if( i_old_rate != val.i_int )
            {
                p_main_interface->statusbar->SetStatusText(
                    wxString::Format(wxT("x%.2f"),
                    (float)INPUT_RATE_DEFAULT / val.i_int ), 1 );
                i_old_rate = val.i_int;
            }
        }
    }
    else if( p_intf->p_sys->b_playing && !p_intf->b_die )
    {
        p_intf->p_sys->b_playing = 0;
        p_main_interface->TogglePlayButton( PAUSE_S );
        i_old_playing_status = PAUSE_S;
    }

    /* Show the interface, if requested */
    if( p_intf->p_sys->b_intf_show )
    {
        p_main_interface->Raise();
        p_intf->p_sys->b_intf_show = VLC_FALSE;
    }

    if( p_intf->b_die )
    {
        vlc_mutex_unlock( &p_intf->change_lock );

        /* Prepare to die, young Skywalker */
        p_main_interface->Close(TRUE);
        return;
    }

    vlc_mutex_unlock( &p_intf->change_lock );
}

/*****************************************************************************
 * PopupMenuCB: callback triggered by the intf-popupmenu playlist variable.
 *  We don't show the menu directly here because we don't want the
 *  caller to block for a too long time.
 *****************************************************************************/
static int PopupMenuCB( vlc_object_t *p_this, const char *psz_variable,
                        vlc_value_t old_val, vlc_value_t new_val, void *param )
{
    intf_thread_t *p_intf = (intf_thread_t *)param;

    if( p_intf->p_sys->pf_show_dialog )
    {
        p_intf->p_sys->pf_show_dialog( p_intf, INTF_DIALOG_POPUPMENU,
                                       new_val.b_bool, 0 );
    }

    return VLC_SUCCESS;
}


/*****************************************************************************
 * IntfShowCB: callback triggered by the intf-show playlist variable.
 *****************************************************************************/
static int IntfShowCB( vlc_object_t *p_this, const char *psz_variable,
                       vlc_value_t old_val, vlc_value_t new_val, void *param )
{
    intf_thread_t *p_intf = (intf_thread_t *)param;
    p_intf->p_sys->b_intf_show = VLC_TRUE;

    return VLC_SUCCESS;
}

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