git.sesse.net Git - vlc/blob - plugins/text/rc.c

   1 /*****************************************************************************
   2  * rc.c : remote control stdin/stdout plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001 VideoLAN
   5  * $Id: rc.c,v 1.23 2002/07/21 18:57:02 sigmunau Exp $
   6  *
   7  * Authors: Peter Surda <shurdeek@panorama.sth.ac.at>
   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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>                                      /* malloc(), free() */
  28 #include <string.h>
  29
  30 #include <errno.h>                                                 /* ENOMEM */
  31 #include <stdio.h>
  32 #include <ctype.h>
  33
  34 #include <vlc/vlc.h>
  35 #include <vlc/intf.h>
  36 #include <vlc/vout.h>
  37
  38 #ifdef HAVE_UNISTD_H
  39 #    include <unistd.h>
  40 #endif
  41
  42 #ifdef HAVE_SYS_TIME_H
  43 #    include <sys/time.h>
  44 #endif
  45 #include <sys/types.h>
  46
  47 #if defined( WIN32 )
  48 #include <winsock2.h>                                            /* select() */
  49 #endif
  50
  51 /*****************************************************************************
  52  * intf_sys_t: description and status of rc interface
  53  *****************************************************************************/
  54 struct intf_sys_t
  55 {
  56     input_thread_t * p_input;
  57 };
  58
  59 #define MAX_LINE_LENGTH 256
  60
  61 /*****************************************************************************
  62  * Local prototypes.
  63  *****************************************************************************/
  64 static void intf_getfunctions ( function_list_t * p_function_list );
  65 static int  intf_Open         ( intf_thread_t *p_intf );
  66 static void intf_Close        ( intf_thread_t *p_intf );
  67 static void intf_Run          ( intf_thread_t *p_intf );
  68
  69 /*****************************************************************************
  70  * Build configuration tree.
  71  *****************************************************************************/
  72 MODULE_CONFIG_START
  73 MODULE_CONFIG_STOP
  74
  75 MODULE_INIT_START
  76     SET_DESCRIPTION( _("remote control interface module") )
  77     ADD_CAPABILITY( INTF, 20 )
  78 MODULE_INIT_STOP
  79
  80 MODULE_ACTIVATE_START
  81     intf_getfunctions( &p_module->p_functions->intf );
  82 MODULE_ACTIVATE_STOP
  83
  84 MODULE_DEACTIVATE_START
  85 MODULE_DEACTIVATE_STOP
  86
  87 /*****************************************************************************
  88  * Functions exported as capabilities. They are declared as static so that
  89  * we don't pollute the namespace too much.
  90  *****************************************************************************/
  91 static void intf_getfunctions( function_list_t * p_function_list )
  92 {
  93     p_function_list->functions.intf.pf_open  = intf_Open;
  94     p_function_list->functions.intf.pf_close = intf_Close;
  95     p_function_list->functions.intf.pf_run   = intf_Run;
  96 }
  97
  98 /*****************************************************************************
  99  * intf_Open: initialize and create stuff
 100  *****************************************************************************/
 101 static int intf_Open( intf_thread_t *p_intf )
 102 {
 103 #ifdef HAVE_ISATTY
 104     /* Check that stdin is a TTY */
 105     if( !isatty( 0 ) )
 106     {
 107         msg_Warn( p_intf, "fd 0 is not a TTY" );
 108         return 1;
 109     }
 110 #endif
 111
 112     /* Non-buffered stdout */
 113     setvbuf( stdout, (char *)NULL, _IOLBF, 0 );
 114
 115     /* Allocate instance and initialize some members */
 116     p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
 117     if( p_intf->p_sys == NULL )
 118     {
 119         msg_Err( p_intf, "out of memory" );
 120         return 1;
 121     }
 122
 123 #ifdef WIN32
 124     AllocConsole();
 125     freopen( "CONOUT$", "w", stdout );
 126     freopen( "CONOUT$", "w", stderr );
 127     freopen( "CONIN$", "r", stdin );
 128     printf( VERSION_MESSAGE "\n" );
 129 #endif
 130
 131     printf( "remote control interface initialized, `h' for help\n" );
 132     return 0;
 133 }
 134
 135 /*****************************************************************************
 136  * intf_Close: destroy interface stuff
 137  *****************************************************************************/
 138 static void intf_Close( intf_thread_t *p_intf )
 139 {
 140     /* Destroy structure */
 141     free( p_intf->p_sys );
 142 }
 143
 144 /*****************************************************************************
 145  * intf_Run: rc thread
 146  *****************************************************************************
 147  * This part of the interface is in a separate thread so that we can call
 148  * exec() from within it without annoying the rest of the program.
 149  *****************************************************************************/
 150 static void intf_Run( intf_thread_t *p_intf )
 151 {
 152     char       p_buffer[ MAX_LINE_LENGTH + 1 ];
 153     vlc_bool_t b_complete = 0;
 154     input_info_category_t * p_category;
 155     input_info_t * p_info;
 156
 157     int        i_dummy;
 158     off_t      i_oldpos = 0;
 159     off_t      i_newpos;
 160     fd_set     fds;                                        /* stdin changed? */
 161     struct timeval tv;                                   /* how long to wait */
 162
 163     double     f_ratio = 1;
 164     char       psz_dashes[81];
 165
 166     memset(psz_dashes, '-', 80);
 167     psz_dashes[80] = '\0';
 168
 169     p_intf->p_sys->p_input = NULL;
 170
 171     while( !p_intf->b_die )
 172     {
 173         b_complete = 0;
 174
 175         /* Check stdin */
 176         tv.tv_sec = 0;
 177         tv.tv_usec = 50000;
 178         FD_ZERO( &fds );
 179         FD_SET( STDIN_FILENO, &fds );
 180
 181         i_dummy = select( 32, &fds, NULL, NULL, &tv );
 182         if( i_dummy > 0 )
 183         {
 184             int i_size = 0;
 185
 186             while( !p_intf->b_die
 187                     && i_size < MAX_LINE_LENGTH
 188                     && read( STDIN_FILENO, p_buffer + i_size, 1 ) > 0
 189                     && p_buffer[ i_size ] != '\r'
 190                     && p_buffer[ i_size ] != '\n' )
 191             {
 192                 i_size++;
 193             }
 194
 195             if( i_size == MAX_LINE_LENGTH
 196                  || p_buffer[ i_size ] == '\r'
 197                  || p_buffer[ i_size ] == '\n' )
 198             {
 199                 p_buffer[ i_size ] = 0;
 200                 b_complete = 1;
 201             }
 202         }
 203
 204         /* Manage the input part */
 205         if( p_intf->p_sys->p_input == NULL )
 206         {
 207             p_intf->p_sys->p_input = vlc_object_find( p_intf, VLC_OBJECT_INPUT,
 208                                                               FIND_ANYWHERE );
 209         }
 210         else if( p_intf->p_sys->p_input->b_dead )
 211         {
 212             vlc_object_release( p_intf->p_sys->p_input );
 213             p_intf->p_sys->p_input = NULL;
 214         }
 215
 216         if( p_intf->p_sys->p_input )
 217         {
 218             input_thread_t *p_input = p_intf->p_sys->p_input;
 219
 220             /* Get position */
 221             vlc_mutex_lock( &p_input->stream.stream_lock );
 222             if( !p_input->b_die && p_input->stream.i_mux_rate )
 223             {
 224 #define A p_input->stream.p_selected_area
 225                 f_ratio = 1.0 / ( 50 * p_input->stream.i_mux_rate );
 226                 i_newpos = A->i_tell * f_ratio;
 227
 228                 if( i_oldpos != i_newpos )
 229                 {
 230                     i_oldpos = i_newpos;
 231                     printf( "pos: %li s / %li s\n", (long int)i_newpos,
 232                             (long int)(f_ratio * A->i_size) );
 233                 }
 234 #undef S
 235             }
 236             vlc_mutex_unlock( &p_input->stream.stream_lock );
 237         }
 238
 239         /* Is there something to do? */
 240         if( b_complete == 1 )
 241         {
 242             char *p_cmd = p_buffer;
 243
 244             switch( p_cmd[0] )
 245             {
 246             case 'a':
 247             case 'A':
 248                 if( p_cmd[1] == ' ' )
 249                 {
 250                     playlist_t *p_playlist;
 251                     p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
 252                                                           FIND_ANYWHERE );
 253                     if( p_playlist )
 254                     {
 255                         playlist_Add( p_playlist, p_cmd + 2,
 256                                 PLAYLIST_APPEND | PLAYLIST_GO, PLAYLIST_END );
 257                         vlc_object_release( p_playlist );
 258                     }
 259                 }
 260                 break;
 261
 262             case 'd':
 263             case 'D':
 264                 vlc_dumpstructure( p_intf->p_vlc );
 265                 break;
 266
 267             case 'p':
 268             case 'P':
 269                 if( p_intf->p_sys->p_input )
 270                 {
 271                     input_SetStatus( p_intf->p_sys->p_input,
 272                                      INPUT_STATUS_PAUSE );
 273                 }
 274                 break;
 275
 276             case 'f':
 277             case 'F':
 278                 if( p_intf->p_sys->p_input )
 279                 {
 280                     vout_thread_t *p_vout;
 281                     p_vout = vlc_object_find( p_intf->p_sys->p_input,
 282                                               VLC_OBJECT_VOUT, FIND_CHILD );
 283
 284                     if( p_vout )
 285                     {
 286                         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 287                         vlc_object_release( p_vout );
 288                     }
 289                 }
 290                 break;
 291
 292             case 's':
 293             case 'S':
 294                 ;
 295                 break;
 296
 297             case 'q':
 298             case 'Q':
 299                 p_intf->p_vlc->b_die = VLC_TRUE;
 300                 break;
 301
 302             case 'r':
 303             case 'R':
 304                 if( p_intf->p_sys->p_input )
 305                 {
 306                     for( i_dummy = 1;
 307                          i_dummy < MAX_LINE_LENGTH && p_cmd[ i_dummy ] >= '0'
 308                                                    && p_cmd[ i_dummy ] <= '9';
 309                          i_dummy++ )
 310                     {
 311                         ;
 312                     }
 313
 314                     p_cmd[ i_dummy ] = 0;
 315                     input_Seek( p_intf->p_sys->p_input,
 316                                 (off_t)atoi( p_cmd + 1 ),
 317                                 INPUT_SEEK_SECONDS | INPUT_SEEK_SET );
 318                     /* rcreseek(f_cpos); */
 319                 }
 320                 break;
 321
 322             case '?':
 323             case 'h':
 324             case 'H':
 325                 printf( "help for remote control commands\n" );
 326                 printf( "h . . . . . . . . . . . . . . . . . . . . . help\n" );
 327                 printf( "a XYZ . . . . . . . . . . append XYZ to playlist\n" );
 328                 printf( "p . . . . . . . . . . . . . . . . . toggle pause\n" );
 329                 printf( "f . . . . . . . . . . . . . . toggle  fullscreen\n" );
 330                 printf( "r X . . . seek in seconds,  for instance `r 3.5'\n" );
 331                 printf( "q . . . . . . . . . . . . . . . . . . . . . quit\n" );
 332                 printf( "end of help\n" );
 333                 break;
 334             case 'i':
 335             case 'I':
 336                 printf( "Dumping stream info\n" );
 337                 vlc_mutex_lock( &p_intf->p_sys->p_input->stream.stream_lock );
 338                 p_category = p_intf->p_sys->p_input->stream.p_info;
 339                 while ( p_category )
 340                 {
 341                     psz_dashes[72 - strlen(p_category->psz_name) ] = '\0';
 342                     printf( "+--| %s |%s+\n", p_category->psz_name, psz_dashes);
 343                     psz_dashes[72 - strlen(p_category->psz_name) ] = '-';
 344                     p_info = p_category->p_info;
 345                     while ( p_info )
 346                     {
 347                         printf( "| %s: %s\n", p_info->psz_name,
 348                                 p_info->psz_value );
 349                         p_info = p_info->p_next;
 350                     }
 351                     printf("|\n");
 352                     p_category = p_category->p_next;
 353                 }
 354                 psz_dashes[78] = '\0';
 355                 printf( "+%s+\n", psz_dashes );
 356                 vlc_mutex_unlock( &p_intf->p_sys->p_input->stream.stream_lock );
 357                 break;
 358             default:
 359                 printf( "unknown command `%s'\n", p_cmd );
 360                 break;
 361             }
 362         }
 363
 364         msleep( INTF_IDLE_SLEEP );
 365     }
 366
 367     if( p_intf->p_sys->p_input )
 368     {
 369         vlc_object_release( p_intf->p_sys->p_input );
 370         p_intf->p_sys->p_input = NULL;
 371     }
 372
 373 }
 374