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

   1 /*****************************************************************************
   2  * intf_rc.cpp: remote control interface
   3  *****************************************************************************
   4  * Copyright (C) 1999-2001 VideoLAN
   5  * $Id: intf_rc.cpp,v 0.1 2001/04/27 shurdeek
   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 #define MODULE_NAME rc
  25 #include "modules_inner.h"
  26
  27 /*****************************************************************************
  28  * Preamble
  29  *****************************************************************************/
  30 #include "defs.h"
  31
  32 #include <errno.h>                                                 /* ENOMEM */
  33 #include <stdlib.h>                                                /* free() */
  34 #include <string.h>                                            /* strerror() */
  35 #include <stdio.h>
  36 #include <ctype.h>
  37 #include <unistd.h>
  38 #include <sys/time.h>
  39 #include <sys/types.h>
  40
  41 #if defined( WIN32 )
  42 #include <winsock2.h>                                            /* select() */
  43 #endif
  44
  45 #include "common.h"
  46 #include "intf_msg.h"
  47 #include "threads.h"
  48 #include "mtime.h"
  49 #include "tests.h"
  50
  51 #include "stream_control.h"
  52 #include "input_ext-intf.h"
  53
  54 #include "intf_playlist.h"
  55 #include "interface.h"
  56
  57 #include "video.h"
  58 #include "video_output.h"
  59
  60 #include "modules.h"
  61 #include "modules_export.h"
  62
  63 /*****************************************************************************
  64  * intf_sys_t: description and status of rc interface
  65  *****************************************************************************/
  66 typedef struct intf_sys_s
  67 {
  68     vlc_mutex_t         change_lock;
  69
  70 } intf_sys_t;
  71
  72 #define MAX_LINE_LENGTH 256
  73
  74 /*****************************************************************************
  75  * Local prototypes.
  76  *****************************************************************************/
  77 static int  intf_Probe     ( probedata_t *p_data );
  78 static int  intf_Open      ( intf_thread_t *p_intf );
  79 static void intf_Close     ( intf_thread_t *p_intf );
  80 static void intf_Run       ( intf_thread_t *p_intf );
  81
  82 /*****************************************************************************
  83  * Functions exported as capabilities. They are declared as static so that
  84  * we don't pollute the namespace too much.
  85  *****************************************************************************/
  86 void _M( intf_getfunctions )( function_list_t * p_function_list )
  87 {
  88     p_function_list->pf_probe = intf_Probe;
  89     p_function_list->functions.intf.pf_open  = intf_Open;
  90     p_function_list->functions.intf.pf_close = intf_Close;
  91     p_function_list->functions.intf.pf_run   = intf_Run;
  92 }
  93
  94 /*****************************************************************************
  95  * intf_Probe: probe the interface and return a score
  96  *****************************************************************************
  97  * This function tries to initialize rc and returns a score to the
  98  * plugin manager so that it can select the best plugin.
  99  *****************************************************************************/
 100 static int intf_Probe( probedata_t *p_data )
 101 {
 102     if( TestMethod( INTF_METHOD_VAR, "rc" ) )
 103     {
 104         return( 999 );
 105     }
 106
 107     return( 2 );
 108 }
 109
 110 /*****************************************************************************
 111  * intf_Open: initialize and create stuff
 112  *****************************************************************************/
 113 static int intf_Open( intf_thread_t *p_intf )
 114 {
 115     /* Non-buffered stdout */
 116     setvbuf( stdout, (char *)NULL, _IOLBF, 0 );
 117
 118     /* Allocate instance and initialize some members */
 119     p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
 120     if( p_intf->p_sys == NULL )
 121     {
 122         intf_ErrMsg( "intf error: %s", strerror(ENOMEM) );
 123         return( 1 );
 124     }
 125
 126     return( 0 );
 127 }
 128
 129 /*****************************************************************************
 130  * intf_Close: destroy interface stuff
 131  *****************************************************************************/
 132 static void intf_Close( intf_thread_t *p_intf )
 133 {
 134     /* Destroy structure */
 135     free( p_intf->p_sys );
 136 }
 137
 138 /*****************************************************************************
 139  * intf_Run: rc thread
 140  *****************************************************************************
 141  * This part of the interface is in a separate thread so that we can call
 142  * exec() from within it without annoying the rest of the program.
 143  *****************************************************************************/
 144 static void intf_Run( intf_thread_t *p_intf )
 145 {
 146     char      p_cmd[ MAX_LINE_LENGTH + 1 ];
 147     int       i_cmd_pos;
 148     boolean_t b_complete = 0;
 149
 150     int       i_dummy;
 151     off_t     i_oldpos = 0;
 152     off_t     i_newpos;
 153     fd_set    fds;                                         /* stdin changed? */
 154     struct timeval tv;                                   /* how long to wait */
 155
 156     double    f_cpos;
 157     double    f_ratio = 1;
 158
 159     while( !p_intf->b_die )
 160     {
 161 #define S p_intf->p_input->stream
 162         if( p_intf->p_input != NULL )
 163         {
 164             /* Get position */
 165             if( S.i_mux_rate )
 166             {
 167                 f_ratio = 1.0 / ( 50 * S.i_mux_rate );
 168                 i_newpos = S.p_selected_area->i_tell * f_ratio;
 169
 170                 if( i_oldpos != i_newpos )
 171                 {
 172                     i_oldpos = i_newpos;
 173                     intf_Msg( "rc: pos: %li s / %li s", (long int)i_newpos,
 174                               (long int)( f_ratio *
 175                                           S.p_selected_area->i_size ) );
 176                 }
 177             }
 178         }
 179 #undef S
 180
 181         b_complete = 0;
 182         i_cmd_pos = 0;
 183
 184         /* Check stdin */
 185         tv.tv_sec = 0;
 186         tv.tv_usec = 50000;
 187         FD_ZERO( &fds );
 188         FD_SET( STDIN_FILENO, &fds );
 189
 190         if( select( 32, &fds, NULL, NULL, &tv ) )
 191         {
 192             while( !p_intf->b_die
 193                     && i_cmd_pos < MAX_LINE_LENGTH
 194                     && read( STDIN_FILENO, p_cmd + i_cmd_pos, 1 ) > 0
 195                     && p_cmd[ i_cmd_pos ] != '\r'
 196                     && p_cmd[ i_cmd_pos ] != '\n' )
 197             {
 198                 i_cmd_pos++;
 199             }
 200
 201             if( i_cmd_pos == MAX_LINE_LENGTH
 202                  || p_cmd[ i_cmd_pos ] == '\r'
 203                  || p_cmd[ i_cmd_pos ] == '\n' )
 204             {
 205                 p_cmd[ i_cmd_pos ] = 0;
 206                 b_complete = 1;
 207             }
 208         }
 209
 210         /* Is there something to do? */
 211         if( b_complete == 1 )
 212         {
 213             switch( p_cmd[ 0 ] )
 214             {
 215             case 'p':
 216             case 'P':
 217                 if( p_intf->p_input != NULL )
 218                 {
 219                     input_SetStatus( p_intf->p_input, INPUT_STATUS_PAUSE );
 220                 }
 221                 break;
 222
 223             case 'f':
 224             case 'F':
 225                 vlc_mutex_lock( &p_vout_bank->lock );
 226                 /* XXX: only fullscreen the first video output */
 227                 if( p_vout_bank->i_count )
 228                 {
 229                     p_vout_bank->pp_vout[0]->i_changes
 230                                       |= VOUT_FULLSCREEN_CHANGE;
 231                 }
 232                 vlc_mutex_unlock( &p_vout_bank->lock );
 233                 break;
 234
 235             case 'm':
 236             case 'M':
 237 #if 0
 238                 double picratio = p_intf->p_input->p_default_vout->i_width
 239                     / p_intf->p_input->p_default_vout->i_height;
 240                 if (picratio
 241                 p_intf->p_input->p_default_vout->i_width=800
 242                 p_intf->p_input->p_default_vout->i_changes |=
 243                     VOUT_FULLSCREEN_CHANGE;
 244 #endif
 245                 break;
 246
 247             case 's':
 248             case 'S':
 249                 ;
 250                 break;
 251
 252             case 'q':
 253             case 'Q':
 254                 p_intf->b_die = 1;
 255                 break;
 256
 257             case 'r':
 258             case 'R':
 259                 if( p_intf->p_input != NULL )
 260                 {
 261                     for( i_dummy = 1;
 262                          i_dummy < MAX_LINE_LENGTH && p_cmd[ i_dummy ] >= '0'
 263                                                    && p_cmd[ i_dummy ] <= '9';
 264                          i_dummy++ )
 265                     {
 266                         ;
 267                     }
 268
 269                     p_cmd[ i_dummy ] = 0;
 270                     f_cpos = atof( p_cmd + 1 );
 271                     input_Seek( p_intf->p_input, (off_t) (f_cpos / f_ratio) );
 272                     /* rcreseek(f_cpos); */
 273                 }
 274                 break;
 275
 276             default:
 277                 intf_Msg( "rc: unknown command `%s'", p_cmd );
 278                 break;
 279             }
 280         }
 281
 282         p_intf->pf_manage( p_intf );
 283         msleep( INTF_IDLE_SLEEP );
 284     }
 285 }
 286