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/*****************************************************************************
 * intf.c: Video CD interface to handle user interaction and still time
 *****************************************************************************
 * Copyright (C) 2002 VideoLAN
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 * $Id: intf.c,v 1.3 2003/11/09 18:06:11 rocky Exp $
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 *
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 * Authors: Rocky Bernstein <rocky@panix.com>
 *   from DVD code by Stphane Borel <stef@via.ecp.fr>
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 *
 * 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 <string.h>
#include <unistd.h>

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

#include "stream_control.h"
#include "input_ext-intf.h"
#include "input_ext-dec.h"
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#include "vlc_keys.h"
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#include "vcd.h"
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#include "vcdplayer.h"
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/*****************************************************************************
 * intf_sys_t: description and status of interface
 *****************************************************************************/
struct intf_sys_t
{
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    input_thread_t    * p_input;
    thread_vcd_data_t * p_vcd;
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    vlc_bool_t          b_still;
    vlc_bool_t          b_inf_still;
    mtime_t             m_still_time;

#if FINISHED
    vcdplay_ctrl_t      control;
#else 
    int                 control;
#endif
    vlc_bool_t          b_click, b_move, b_key_pressed;
};

/*****************************************************************************
 * Local prototypes.
 *****************************************************************************/
static int  InitThread     ( intf_thread_t *p_intf );
static int  MouseEvent     ( vlc_object_t *, char const *,
                             vlc_value_t, vlc_value_t, void * );
static int  KeyEvent       ( vlc_object_t *, char const *,
                             vlc_value_t, vlc_value_t, void * );

/* Exported functions */
static void RunIntf        ( intf_thread_t *p_intf );

/*****************************************************************************
 * OpenIntf: initialize dummy interface
 *****************************************************************************/
int E_(VCDOpenIntf) ( vlc_object_t *p_this )
{
    intf_thread_t *p_intf = (intf_thread_t *)p_this;

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    msg_Dbg( p_intf, "VCDOpenIntf" );

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    /* Allocate instance and initialize some members */
    p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
    if( p_intf->p_sys == NULL )
    {
        return( 1 );
    };

    p_intf->pf_run = RunIntf;

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    var_AddCallback( p_intf->p_vlc, "key-pressed", KeyEvent, p_intf );
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    p_intf->p_sys->m_still_time = 0;
    p_intf->p_sys->b_inf_still = 0;
    p_intf->p_sys->b_still = 0;

    return( 0 );
}

/*****************************************************************************
 * CloseIntf: destroy dummy interface
 *****************************************************************************/
void E_(VCDCloseIntf) ( vlc_object_t *p_this )
{
    intf_thread_t *p_intf = (intf_thread_t *)p_this;

    /* Destroy structure */
    free( p_intf->p_sys );
}


/*****************************************************************************
 * RunIntf: main loop
 *****************************************************************************/
static void RunIntf( intf_thread_t *p_intf )
{
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    vlc_object_t      * p_vout = NULL;
    thread_vcd_data_t * p_vcd;
    input_thread_t    * p_input;
    
    /* What you add to the last input number entry. It accumulates all of
       the 10_ADD keypresses */
    int number_addend = 0; 
    
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    if( InitThread( p_intf ) < 0 )
    {
        msg_Err( p_intf, "can't initialize intf" );
        return;
    }
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    p_input = p_intf->p_sys->p_input;
    p_vcd   = p_intf->p_sys->p_vcd = 
      (thread_vcd_data_t *) p_input->p_access_data;

    dbg_print( INPUT_DBG_CALL, "intf initialized" );
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    /* Main loop */
    while( !p_intf->b_die )
    {
      vlc_mutex_lock( &p_intf->change_lock );

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      /*
       * keyboard event
       */
      if( p_vout && p_intf->p_sys->b_key_pressed )
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        {
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	  vlc_value_t val;
	  int i, i_action = -1;
	  struct hotkey *p_hotkeys = p_intf->p_vlc->p_hotkeys;

	  p_intf->p_sys->b_key_pressed = VLC_FALSE;
          
	  /* Find action triggered by hotkey (if any) */
	  var_Get( p_intf->p_vlc, "key-pressed", &val );

	  dbg_print( INPUT_DBG_EVENT, "Key pressed %d", val.i_int );

	  for( i = 0; p_hotkeys[i].psz_action != NULL; i++ )
            {
	      if( p_hotkeys[i].i_key == val.i_int )
                {
		  i_action = p_hotkeys[i].i_action;
                }
            }
	  
	  if( i_action != -1) {
	    switch (i_action) {
	      
	    case ACTIONID_NAV_LEFT: 
	      dbg_print( INPUT_DBG_EVENT, "ACTIONID_NAV_LEFT - prev (%d)", 
			 number_addend );
	      do {
		vcdplayer_play_prev( p_input );
	      }	while (number_addend-- > 0);
	      break;

	    case ACTIONID_NAV_RIGHT:
	      dbg_print( INPUT_DBG_EVENT, "ACTIONID_NAV_RIGHT - next (%d)",
			 number_addend );
	      do {
		vcdplayer_play_next( p_input );
	      } while (number_addend-- > 0);
	      break;

	    case ACTIONID_NAV_UP:
	      dbg_print( INPUT_DBG_EVENT, "ACTIONID_NAV_UP - return" );
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	      do {
		vcdplayer_play_return( p_input );
	      } while (number_addend-- > 0);
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	      break;

	    case ACTIONID_NAV_DOWN:
	      dbg_print( INPUT_DBG_EVENT, "ACTIONID_NAV_DOWN - default"  );
	      vcdplayer_play_default( p_input );
	      break;

	    case ACTIONID_NAV_ACTIVATE: 
	      {
		vcdinfo_itemid_t itemid;
		itemid.type=p_vcd->play_item.type;

		dbg_print( INPUT_DBG_EVENT, "ACTIONID_NAV_ACTIVATE" );

		if ( vcdplayer_pbc_is_on( p_vcd ) && number_addend != 0 ) {
		  lid_t next_num=vcdplayer_selection2lid(p_input, 
							 number_addend);
		  if (VCDINFO_INVALID_LID != next_num) {
		    itemid.num  = next_num;
		    itemid.type = VCDINFO_ITEM_TYPE_LID;
		    VCDPlay( p_input, itemid );
		  }
		} else {
		  itemid.num = number_addend;
		  VCDPlay( p_input, itemid );
		}
		break;
	      }
	    }
	    number_addend = 0;
	  } else {
	    unsigned int digit_entered=0;

	    switch (val.i_int) {
	    case '9':
	      digit_entered++;
	    case '8':
	      digit_entered++;
	    case '7':
	      digit_entered++;
	    case '6':
	      digit_entered++;
	    case '5':
	      digit_entered++;
	    case '4':
	      digit_entered++;
	    case '3':
	      digit_entered++;
	    case '2':
	      digit_entered++;
	    case '1':
	      digit_entered++;
	    case '0':
	      {
		number_addend *= 10;
		number_addend += digit_entered;
		dbg_print( INPUT_DBG_EVENT, 
			   "Added %d. Number is now: %d\n", 
			   digit_entered, number_addend);
		break;
	      }
	    }
	  }
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        }

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      vlc_mutex_unlock( &p_intf->change_lock );
      
      if( p_vout == NULL )
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        {
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	  p_vout = vlc_object_find( p_intf->p_sys->p_input,
				    VLC_OBJECT_VOUT, FIND_CHILD );
	  if( p_vout )
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            {
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	      var_AddCallback( p_vout, "mouse-moved", MouseEvent, p_intf );
	      var_AddCallback( p_vout, "mouse-clicked", MouseEvent, p_intf );
	      var_AddCallback( p_vout, "key-pressed", KeyEvent, p_intf );
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            }
        }
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      /* Wait a bit */
      msleep( INTF_IDLE_SLEEP );
    }
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    if( p_vout )
    {
        var_DelCallback( p_vout, "mouse-moved", MouseEvent, p_intf );
        var_DelCallback( p_vout, "mouse-clicked", MouseEvent, p_intf );
        vlc_object_release( p_vout );
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    }

    vlc_object_release( p_intf->p_sys->p_input );
}

/*****************************************************************************
 * InitThread:
 *****************************************************************************/
static int InitThread( intf_thread_t * p_intf )
{
    /* We might need some locking here */
    if( !p_intf->b_die )
    {
        input_thread_t * p_input;

        p_input = vlc_object_find( p_intf, VLC_OBJECT_INPUT, FIND_PARENT );

        /* Maybe the input just died */
        if( p_input == NULL )
        {
            return VLC_EGENERIC;
        }

        vlc_mutex_lock( &p_intf->change_lock );

        p_intf->p_sys->p_input = p_input;

        p_intf->p_sys->b_move = VLC_FALSE;
        p_intf->p_sys->b_click = VLC_FALSE;
        p_intf->p_sys->b_key_pressed = VLC_FALSE;

        vlc_mutex_unlock( &p_intf->change_lock );

        return VLC_SUCCESS;
    }
    else
    {
        return VLC_EGENERIC;
    }
}

/*****************************************************************************
 * MouseEvent: callback for mouse events
 *****************************************************************************/
static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
                       vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    intf_thread_t *p_intf = (intf_thread_t *)p_data;

    vlc_mutex_lock( &p_intf->change_lock );

    if( psz_var[6] == 'c' ) /* "mouse-clicked" */
    {
        p_intf->p_sys->b_click = VLC_TRUE;
    }
    else if( psz_var[6] == 'm' ) /* "mouse-moved" */
    {
        p_intf->p_sys->b_move = VLC_TRUE;
    }

    vlc_mutex_unlock( &p_intf->change_lock );

    return VLC_SUCCESS;
}

/*****************************************************************************
 * KeyEvent: callback for keyboard events
 *****************************************************************************/
static int KeyEvent( vlc_object_t *p_this, char const *psz_var,
                       vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    intf_thread_t *p_intf = (intf_thread_t *)p_data;
    vlc_mutex_lock( &p_intf->change_lock );

    p_intf->p_sys->b_key_pressed = VLC_TRUE;
    
    vlc_mutex_unlock( &p_intf->change_lock );

    return VLC_SUCCESS;
}

/*****************************************************************************
 * dvdIntfStillTime: function provided to demux plugin to request
 * still images
 *****************************************************************************/
int vcdIntfStillTime( intf_thread_t *p_intf, int i_sec )
{
    vlc_mutex_lock( &p_intf->change_lock );

    if( i_sec == 0xff )
    {
        p_intf->p_sys->b_still = 1;
        p_intf->p_sys->b_inf_still = 1;
    }
    else if( i_sec > 0 )
    {
        p_intf->p_sys->b_still = 1;
        p_intf->p_sys->m_still_time = 1000000 * i_sec;
    }
    vlc_mutex_unlock( &p_intf->change_lock );

    return VLC_SUCCESS;
}

/*****************************************************************************
 * vcdIntfStillTime: function provided to reset still image
 *****************************************************************************/
int vcdIntfResetStillTime( intf_thread_t *p_intf )
{
    vlc_mutex_lock( &p_intf->change_lock );
    p_intf->p_sys->m_still_time = 0;
    input_SetStatus( p_intf->p_sys->p_input, INPUT_STATUS_PLAY );
    vlc_mutex_unlock( &p_intf->change_lock );

    return VLC_SUCCESS;
}