modules/misc/notify/msn.c

   1 /*****************************************************************************
   2  * msn.c : msn title plugin
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea -at- videolan -dot- 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 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>                                      /* malloc(), free() */
  28
  29 #include <vlc/vlc.h>
  30 #include <vlc_interface.h>
  31 #include <vlc_meta.h>
  32 #include <vlc_playlist.h>
  33
  34 /*****************************************************************************
  35  * intf_sys_t: description and status of log interface
  36  *****************************************************************************/
  37 struct intf_sys_t
  38 {
  39     char *psz_format;
  40 };
  41
  42 /*****************************************************************************
  43  * Local prototypes
  44  *****************************************************************************/
  45 static int  Open    ( vlc_object_t * );
  46 static void Close   ( vlc_object_t * );
  47
  48 static int ItemChange( vlc_object_t *, const char *,
  49                        vlc_value_t, vlc_value_t, void * );
  50 static int SendToMSN( char * psz_msg );
  51
  52 #define MSN_MAX_LENGTH 256
  53
  54 /*****************************************************************************
  55  * Module descriptor
  56  *****************************************************************************
  57  * This module should be used on windows with MSN (i think that you need to
  58  * have MSN 7 or newer) to "advertise" what you are playing in VLC.
  59  * You need to enable the "What I'm Listening To" option in MSN.
  60  *****************************************************************************/
  61 #define FORMAT_DEFAULT "{0} - {1}"
  62 #define FORMAT_TEXT N_("Title format string")
  63 #define FORMAT_LONGTEXT N_("Format of the string to send to MSN " \
  64 "{0} Artist, {1} Title, {2} Album. Defaults to \"Artist - Title\" ({0} - {1}).")
  65
  66 vlc_module_begin();
  67     set_category( CAT_INTERFACE );
  68     set_subcategory( SUBCAT_INTERFACE_CONTROL );
  69     set_shortname( "MSN" );
  70     set_description( _("MSN Now-Playing") );
  71
  72     add_string( "msn-format", FORMAT_DEFAULT, NULL,
  73                 FORMAT_TEXT, FORMAT_LONGTEXT, VLC_FALSE );
  74
  75     set_capability( "interface", 0 );
  76     set_callbacks( Open, Close );
  77 vlc_module_end();
  78
  79 /*****************************************************************************
  80  * Open: initialize and create stuff
  81  *****************************************************************************/
  82 static int Open( vlc_object_t *p_this )
  83 {
  84     intf_thread_t *p_intf = (intf_thread_t *)p_this;
  85     playlist_t *p_playlist;
  86
  87     MALLOC_ERR( p_intf->p_sys, intf_sys_t );
  88
  89     p_intf->p_sys->psz_format = config_GetPsz( p_intf, "msn-format" );
  90     if( !p_intf->p_sys->psz_format )
  91     {
  92         msg_Dbg( p_intf, "no format provided" );
  93         p_intf->p_sys->psz_format = strdup( FORMAT_DEFAULT );
  94     }
  95     msg_Dbg( p_intf, "using format: %s", p_intf->p_sys->psz_format );
  96
  97     p_playlist = pl_Yield( p_intf );
  98     var_AddCallback( p_playlist, "item-change", ItemChange, p_intf );
  99     var_AddCallback( p_playlist, "playlist-current", ItemChange, p_intf );
 100     pl_Release( p_intf );
 101
 102     return VLC_SUCCESS;
 103 }
 104
 105 /*****************************************************************************
 106  * Close: destroy interface stuff
 107  *****************************************************************************/
 108 static void Close( vlc_object_t *p_this )
 109 {
 110     intf_thread_t *p_intf = (intf_thread_t *)p_this;
 111     playlist_t *p_playlist = pl_Yield( p_this );
 112
 113     /* clear the MSN stuff ... else it looks like we're still playing
 114      * something although VLC (or the MSN plugin) is closed */
 115     SendToMSN( "\\0Music\\01\\0\\0\\0\\0\\0\\0\\0" );
 116
 117     var_DelCallback( p_playlist, "item-change", ItemChange, p_intf );
 118     var_DelCallback( p_playlist, "playlist-current", ItemChange, p_intf );
 119     pl_Release( p_this );
 120
 121     /* Destroy structure */
 122     free( p_intf->p_sys->psz_format );
 123     free( p_intf->p_sys );
 124 }
 125
 126 /*****************************************************************************
 127  * ItemChange: Playlist item change callback
 128  *****************************************************************************/
 129 static int ItemChange( vlc_object_t *p_this, const char *psz_var,
 130                        vlc_value_t oldval, vlc_value_t newval, void *param )
 131 {
 132     intf_thread_t *p_intf = (intf_thread_t *)param;
 133     char psz_tmp[MSN_MAX_LENGTH];
 134     char *psz_title = NULL;
 135     char *psz_artist = NULL;
 136     char *psz_album = NULL;
 137     input_thread_t *p_input;
 138     playlist_t *p_playlist = pl_Yield( p_this );
 139
 140     p_input = p_playlist->p_input;
 141     pl_Release( p_this );
 142
 143     if( !p_input ) return VLC_SUCCESS;
 144     vlc_object_yield( p_input );
 145
 146     if( p_input->b_dead || !input_GetItem(p_input)->psz_name )
 147     {
 148         /* Not playing anything ... */
 149         SendToMSN( "\\0Music\\01\\0\\0\\0\\0\\0\\0\\0" );
 150         vlc_object_release( p_input );
 151         return VLC_SUCCESS;
 152     }
 153
 154     /* Playing something ... */
 155     psz_artist = input_GetItem(p_input)->p_meta->psz_artist ?
 156                   strdup( input_GetItem(p_input)->p_meta->psz_artist ) :
 157                   strdup( "" );
 158     psz_album = input_GetItem(p_input)->p_meta->psz_album ?
 159                   strdup( input_GetItem(p_input)->p_meta->psz_album ) :
 160                   strdup( "" );
 161     psz_title = strdup( input_GetItem(p_input)->psz_name );
 162     if( psz_title == NULL ) psz_title = strdup( N_("(no title)") );
 163     if( psz_artist == NULL ) psz_artist = strdup( N_("(no artist)") );
 164     if( psz_album == NULL ) psz_album = strdup( N_("(no album)") );
 165     snprintf( psz_tmp,
 166               MSN_MAX_LENGTH,
 167               "\\0Music\\01\\0%s\\0%s\\0%s\\0%s\\0\\0\\0",
 168               p_intf->p_sys->psz_format,
 169               psz_artist,
 170               psz_title,
 171               psz_album );
 172     free( psz_title );
 173     free( psz_artist );
 174     free( psz_album );
 175
 176     SendToMSN( psz_tmp );
 177     vlc_object_release( p_input );
 178
 179     return VLC_SUCCESS;
 180 }
 181
 182 /*****************************************************************************
 183  * SendToMSN
 184  *****************************************************************************/
 185 static int SendToMSN( char *psz_msg )
 186 {
 187     COPYDATASTRUCT msndata;
 188     HWND msnui = NULL;
 189
 190     wchar_t buffer[MSN_MAX_LENGTH];
 191
 192     mbstowcs( buffer, psz_msg, MSN_MAX_LENGTH );
 193
 194     msndata.dwData = 0x547;
 195     msndata.lpData = &buffer;
 196     msndata.cbData = (lstrlenW(buffer)*2)+2;
 197
 198     while( ( msnui = FindWindowEx( NULL, msnui, "MsnMsgrUIManager", NULL ) ) )
 199     {
 200         SendMessage(msnui, WM_COPYDATA, (WPARAM)NULL, (LPARAM)&msndata);
 201     }
 202
 203     return VLC_SUCCESS;
 204 }