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 1.8 2002/01/04 14:01:34 sam 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 #include <unistd.h>
  34 #include <sys/time.h>
  35 #include <sys/types.h>
  36
  37 #include <videolan/vlc.h>
  38
  39 #if defined( WIN32 )
  40 #include <winsock2.h>                                            /* select() */
  41 #endif
  42
  43 #include "stream_control.h"
  44 #include "input_ext-intf.h"
  45
  46 #include "intf_playlist.h"
  47 #include "interface.h"
  48
  49 #include "video.h"
  50 #include "video_output.h"
  51
  52 /*****************************************************************************
  53  * intf_sys_t: description and status of rc interface
  54  *****************************************************************************/
  55 typedef struct intf_sys_s
  56 {
  57     vlc_mutex_t         change_lock;
  58
  59 } intf_sys_t;
  60
  61 #define MAX_LINE_LENGTH 256
  62
  63 /*****************************************************************************
  64  * Local prototypes.
  65  *****************************************************************************/
  66 static void intf_getfunctions ( function_list_t * p_function_list );
  67 static int  intf_Probe        ( probedata_t *p_data );
  68 static int  intf_Open         ( intf_thread_t *p_intf );
  69 static void intf_Close        ( intf_thread_t *p_intf );
  70 static void intf_Run          ( intf_thread_t *p_intf );
  71
  72 /*****************************************************************************
  73  * Build configuration tree.
  74  *****************************************************************************/
  75 MODULE_CONFIG_START
  76 MODULE_CONFIG_STOP
  77
  78 MODULE_INIT_START
  79     SET_DESCRIPTION( "remote control interface module" )
  80     ADD_CAPABILITY( INTF, 20 )
  81     ADD_SHORTCUT( "rc" )
  82 MODULE_INIT_STOP
  83
  84 MODULE_ACTIVATE_START
  85     intf_getfunctions( &p_module->p_functions->intf );
  86 MODULE_ACTIVATE_STOP
  87
  88 MODULE_DEACTIVATE_START
  89 MODULE_DEACTIVATE_STOP
  90
  91 /*****************************************************************************
  92  * Functions exported as capabilities. They are declared as static so that
  93  * we don't pollute the namespace too much.
  94  *****************************************************************************/
  95 static void intf_getfunctions( function_list_t * p_function_list )
  96 {
  97     p_function_list->pf_probe = intf_Probe;
  98     p_function_list->functions.intf.pf_open  = intf_Open;
  99     p_function_list->functions.intf.pf_close = intf_Close;
 100     p_function_list->functions.intf.pf_run   = intf_Run;
 101 }
 102
 103 /*****************************************************************************
 104  * intf_Probe: probe the interface and return a score
 105  *****************************************************************************
 106  * This function tries to initialize rc and returns a score to the
 107  * plugin manager so that it can select the best plugin.
 108  *****************************************************************************/
 109 static int intf_Probe( probedata_t *p_data )
 110 {
 111     return( 20 );
 112 }
 113
 114 /*****************************************************************************
 115  * intf_Open: initialize and create stuff
 116  *****************************************************************************/
 117 static int intf_Open( intf_thread_t *p_intf )
 118 {
 119     /* Non-buffered stdout */
 120     setvbuf( stdout, (char *)NULL, _IOLBF, 0 );
 121
 122     /* Allocate instance and initialize some members */
 123     p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
 124     if( p_intf->p_sys == NULL )
 125     {
 126         intf_ErrMsg( "intf error: %s", strerror(ENOMEM) );
 127         return( 1 );
 128     }
 129
 130     intf_Msg( "rc: remote control interface initialized, `h' for help" );
 131     return( 0 );
 132 }
 133
 134 /*****************************************************************************
 135  * intf_Close: destroy interface stuff
 136  *****************************************************************************/
 137 static void intf_Close( intf_thread_t *p_intf )
 138 {
 139     /* Destroy structure */
 140     free( p_intf->p_sys );
 141 }
 142
 143 /*****************************************************************************
 144  * intf_Run: rc thread
 145  *****************************************************************************
 146  * This part of the interface is in a separate thread so that we can call
 147  * exec() from within it without annoying the rest of the program.
 148  *****************************************************************************/
 149 static void intf_Run( intf_thread_t *p_intf )
 150 {
 151     char      p_cmd[ MAX_LINE_LENGTH + 1 ];
 152     int       i_cmd_pos;
 153     boolean_t b_complete = 0;
 154
 155     int       i_dummy;
 156     off_t     i_oldpos = 0;
 157     off_t     i_newpos;
 158     fd_set    fds;                                         /* stdin changed? */
 159     struct timeval tv;                                   /* how long to wait */
 160
 161     double    f_cpos;
 162     double    f_ratio = 1;
 163
 164     while( !p_intf->b_die )
 165     {
 166 #define S p_intf->p_input->stream
 167         if( p_intf->p_input != NULL )
 168         {
 169             /* Get position */
 170             if( S.i_mux_rate )
 171             {
 172                 f_ratio = 1.0 / ( 50 * S.i_mux_rate );
 173                 i_newpos = S.p_selected_area->i_tell * f_ratio;
 174
 175                 if( i_oldpos != i_newpos )
 176                 {
 177                     i_oldpos = i_newpos;
 178                     intf_Msg( "rc: pos: %li s / %li s", (long int)i_newpos,
 179                               (long int)( f_ratio *
 180                                           S.p_selected_area->i_size ) );
 181                 }
 182             }
 183         }
 184 #undef S
 185
 186         b_complete = 0;
 187         i_cmd_pos = 0;
 188
 189         /* Check stdin */
 190         tv.tv_sec = 0;
 191         tv.tv_usec = 50000;
 192         FD_ZERO( &fds );
 193         FD_SET( STDIN_FILENO, &fds );
 194
 195         if( select( 32, &fds, NULL, NULL, &tv ) )
 196         {
 197             while( !p_intf->b_die
 198                     && i_cmd_pos < MAX_LINE_LENGTH
 199                     && read( STDIN_FILENO, p_cmd + i_cmd_pos, 1 ) > 0
 200                     && p_cmd[ i_cmd_pos ] != '\r'
 201                     && p_cmd[ i_cmd_pos ] != '\n' )
 202             {
 203                 i_cmd_pos++;
 204             }
 205
 206             if( i_cmd_pos == MAX_LINE_LENGTH
 207                  || p_cmd[ i_cmd_pos ] == '\r'
 208                  || p_cmd[ i_cmd_pos ] == '\n' )
 209             {
 210                 p_cmd[ i_cmd_pos ] = 0;
 211                 b_complete = 1;
 212             }
 213         }
 214
 215         /* Is there something to do? */
 216         if( b_complete == 1 )
 217         {
 218             switch( p_cmd[ 0 ] )
 219             {
 220             case 'a':
 221             case 'A':
 222                 if( p_cmd[ 1 ] == ' ' )
 223                 {
 224                     intf_PlaylistAdd( p_main->p_playlist,
 225                                       PLAYLIST_END, p_cmd + 2 );
 226                     if( p_intf->p_input != NULL )
 227                     {
 228                         p_intf->p_input->b_eof = 1;
 229                     }
 230                     intf_PlaylistJumpto( p_main->p_playlist,
 231                                          p_main->p_playlist->i_size - 2 );
 232                 }
 233                 break;
 234
 235             case 'p':
 236             case 'P':
 237                 if( p_intf->p_input != NULL )
 238                 {
 239                     input_SetStatus( p_intf->p_input, INPUT_STATUS_PAUSE );
 240                 }
 241                 break;
 242
 243             case 'f':
 244             case 'F':
 245                 vlc_mutex_lock( &p_vout_bank->lock );
 246                 /* XXX: only fullscreen the first video output */
 247                 if( p_vout_bank->i_count )
 248                 {
 249                     p_vout_bank->pp_vout[0]->i_changes
 250                                       |= VOUT_FULLSCREEN_CHANGE;
 251                 }
 252                 vlc_mutex_unlock( &p_vout_bank->lock );
 253                 break;
 254
 255             case 'm':
 256             case 'M':
 257 #if 0
 258                 double picratio = p_intf->p_input->p_default_vout->i_width
 259                     / p_intf->p_input->p_default_vout->i_height;
 260                 if (picratio
 261                 p_intf->p_input->p_default_vout->i_width=800
 262                 p_intf->p_input->p_default_vout->i_changes |=
 263                     VOUT_FULLSCREEN_CHANGE;
 264 #endif
 265                 break;
 266
 267             case 's':
 268             case 'S':
 269                 ;
 270                 break;
 271
 272             case 'q':
 273             case 'Q':
 274                 p_intf->b_die = 1;
 275                 break;
 276
 277             case 'r':
 278             case 'R':
 279                 if( p_intf->p_input != NULL )
 280                 {
 281                     for( i_dummy = 1;
 282                          i_dummy < MAX_LINE_LENGTH && p_cmd[ i_dummy ] >= '0'
 283                                                    && p_cmd[ i_dummy ] <= '9';
 284                          i_dummy++ )
 285                     {
 286                         ;
 287                     }
 288
 289                     p_cmd[ i_dummy ] = 0;
 290                     f_cpos = atof( p_cmd + 1 );
 291                     input_Seek( p_intf->p_input, (off_t) (f_cpos / f_ratio) );
 292                     /* rcreseek(f_cpos); */
 293                 }
 294                 break;
 295
 296             case '?':
 297             case 'h':
 298             case 'H':
 299                 intf_Msg( "rc: help for remote control commands" );
 300                 intf_Msg( "rc: h                                       help" );
 301                 intf_Msg( "rc: a XYZ                 append XYZ to playlist" );
 302                 intf_Msg( "rc: p                               toggle pause" );
 303                 intf_Msg( "rc: f                          toggle fullscreen" );
 304                 intf_Msg( "rc: r X    seek in seconds, for instance `r 3.5'" );
 305                 intf_Msg( "rc: q                                       quit" );
 306                 intf_Msg( "rc: end of help" );
 307                 break;
 308
 309             default:
 310                 intf_Msg( "rc: unknown command `%s'", p_cmd );
 311                 break;
 312             }
 313         }
 314
 315         p_intf->pf_manage( p_intf );
 316         msleep( INTF_IDLE_SLEEP );
 317     }
 318 }
 319