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 "config.h"
  46 #include "common.h"
  47 #include "intf_msg.h"
  48 #include "threads.h"
  49 #include "mtime.h"
  50 #include "tests.h"
  51
  52 #include "stream_control.h"
  53 #include "input_ext-intf.h"
  54
  55 #include "intf_playlist.h"
  56 #include "interface.h"
  57
  58 #include "video.h"
  59 #include "video_output.h"
  60
  61 #include "modules.h"
  62 #include "modules_export.h"
  63
  64 /*****************************************************************************
  65  * intf_sys_t: description and status of rc interface
  66  *****************************************************************************/
  67 typedef struct intf_sys_s
  68 {
  69     vlc_mutex_t         change_lock;
  70
  71 } intf_sys_t;
  72
  73 #define MAX_LINE_LENGTH 256
  74
  75 /*****************************************************************************
  76  * Local prototypes.
  77  *****************************************************************************/
  78 static int  intf_Probe     ( probedata_t *p_data );
  79 static int  intf_Open      ( intf_thread_t *p_intf );
  80 static void intf_Close     ( intf_thread_t *p_intf );
  81 static void intf_Run       ( intf_thread_t *p_intf );
  82
  83 /*****************************************************************************
  84  * Functions exported as capabilities. They are declared as static so that
  85  * we don't pollute the namespace too much.
  86  *****************************************************************************/
  87 void _M( intf_getfunctions )( function_list_t * p_function_list )
  88 {
  89     p_function_list->pf_probe = intf_Probe;
  90     p_function_list->functions.intf.pf_open  = intf_Open;
  91     p_function_list->functions.intf.pf_close = intf_Close;
  92     p_function_list->functions.intf.pf_run   = intf_Run;
  93 }
  94
  95 /*****************************************************************************
  96  * intf_Probe: probe the interface and return a score
  97  *****************************************************************************
  98  * This function tries to initialize rc and returns a score to the
  99  * plugin manager so that it can select the best plugin.
 100  *****************************************************************************/
 101 static int intf_Probe( probedata_t *p_data )
 102 {
 103     if( TestMethod( INTF_METHOD_VAR, "rc" ) )
 104     {
 105         return( 999 );
 106     }
 107
 108     return( 2 );
 109 }
 110
 111 /*****************************************************************************
 112  * intf_Open: initialize and create stuff
 113  *****************************************************************************/
 114 static int intf_Open( intf_thread_t *p_intf )
 115 {
 116     /* Non-buffered stdout */
 117     setvbuf( stdout, (char *)NULL, _IOLBF, 0 );
 118
 119     /* Allocate instance and initialize some members */
 120     p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
 121     if( p_intf->p_sys == NULL )
 122     {
 123         intf_ErrMsg( "intf error: %s", strerror(ENOMEM) );
 124         return( 1 );
 125     }
 126
 127     return( 0 );
 128 }
 129
 130 /*****************************************************************************
 131  * intf_Close: destroy interface stuff
 132  *****************************************************************************/
 133 static void intf_Close( intf_thread_t *p_intf )
 134 {
 135     /* Destroy structure */
 136     free( p_intf->p_sys );
 137 }
 138
 139 /*****************************************************************************
 140  * intf_Run: rc thread
 141  *****************************************************************************
 142  * This part of the interface is in a separate thread so that we can call
 143  * exec() from within it without annoying the rest of the program.
 144  *****************************************************************************/
 145 static void intf_Run( intf_thread_t *p_intf )
 146 {
 147     char      p_cmd[ MAX_LINE_LENGTH + 1 ];
 148     int       i_cmd_pos;
 149     boolean_t b_complete = 0;
 150
 151     int       i_dummy;
 152     off_t     i_oldpos = 0;
 153     off_t     i_newpos;
 154     fd_set    fds;                                         /* stdin changed? */
 155     struct timeval tv;                                   /* how long to wait */
 156
 157     double    f_cpos;
 158     double    f_ratio = 1;
 159
 160     while( !p_intf->b_die )
 161     {
 162 #define S p_intf->p_input->stream
 163         if( p_intf->p_input != NULL )
 164         {
 165             /* Get position */
 166             if( S.i_mux_rate )
 167             {
 168                 f_ratio = 1.0 / ( 50 * S.i_mux_rate );
 169                 i_newpos = S.p_selected_area->i_tell * f_ratio;
 170
 171                 if( i_oldpos != i_newpos )
 172                 {
 173                     i_oldpos = i_newpos;
 174                     intf_Msg( "rc: pos: %li s / %li s", (long int)i_newpos,
 175                               (long int)( f_ratio *
 176                                           S.p_selected_area->i_size ) );
 177                 }
 178             }
 179         }
 180 #undef S
 181
 182         b_complete = 0;
 183         i_cmd_pos = 0;
 184
 185         /* Check stdin */
 186         tv.tv_sec = 0;
 187         tv.tv_usec = 50000;
 188         FD_ZERO( &fds );
 189         FD_SET( STDIN_FILENO, &fds );
 190
 191         if( select( 32, &fds, NULL, NULL, &tv ) )
 192         {
 193             while( !p_intf->b_die
 194                     && i_cmd_pos < MAX_LINE_LENGTH
 195                     && read( STDIN_FILENO, p_cmd + i_cmd_pos, 1 ) > 0
 196                     && p_cmd[ i_cmd_pos ] != '\r'
 197                     && p_cmd[ i_cmd_pos ] != '\n' )
 198             {
 199                 i_cmd_pos++;
 200             }
 201
 202             if( i_cmd_pos == MAX_LINE_LENGTH
 203                  || p_cmd[ i_cmd_pos ] == '\r'
 204                  || p_cmd[ i_cmd_pos ] == '\n' )
 205             {
 206                 p_cmd[ i_cmd_pos ] = 0;
 207                 b_complete = 1;
 208             }
 209         }
 210
 211         /* Is there something to do? */
 212         if( b_complete == 1 )
 213         {
 214             switch( p_cmd[ 0 ] )
 215             {
 216             case 'p':
 217             case 'P':
 218                 if( p_intf->p_input != NULL )
 219                 {
 220                     input_SetStatus( p_intf->p_input, INPUT_STATUS_PAUSE );
 221                 }
 222                 break;
 223
 224             case 'f':
 225             case 'F':
 226                 vlc_mutex_lock( &p_vout_bank->lock );
 227                 /* XXX: only fullscreen the first video output */
 228                 if( p_vout_bank->i_count )
 229                 {
 230                     p_vout_bank->pp_vout[0]->i_changes
 231                                       |= VOUT_FULLSCREEN_CHANGE;
 232                 }
 233                 vlc_mutex_unlock( &p_vout_bank->lock );
 234                 break;
 235
 236             case 'm':
 237             case 'M':
 238 #if 0
 239                 double picratio = p_intf->p_input->p_default_vout->i_width
 240                     / p_intf->p_input->p_default_vout->i_height;
 241                 if (picratio
 242                 p_intf->p_input->p_default_vout->i_width=800
 243                 p_intf->p_input->p_default_vout->i_changes |=
 244                     VOUT_FULLSCREEN_CHANGE;
 245 #endif
 246                 break;
 247
 248             case 's':
 249             case 'S':
 250                 ;
 251                 break;
 252
 253             case 'q':
 254             case 'Q':
 255                 p_intf->b_die = 1;
 256                 break;
 257
 258             case 'r':
 259             case 'R':
 260                 if( p_intf->p_input != NULL )
 261                 {
 262                     for( i_dummy = 1;
 263                          i_dummy < MAX_LINE_LENGTH && p_cmd[ i_dummy ] >= '0'
 264                                                    && p_cmd[ i_dummy ] <= '9';
 265                          i_dummy++ )
 266                     {
 267                         ;
 268                     }
 269
 270                     p_cmd[ i_dummy ] = 0;
 271                     f_cpos = atof( p_cmd + 1 );
 272                     input_Seek( p_intf->p_input, (off_t) (f_cpos / f_ratio) );
 273                     /* rcreseek(f_cpos); */
 274                 }
 275                 break;
 276
 277             default:
 278                 intf_Msg( "rc: unknown command `%s'", p_cmd );
 279                 break;
 280             }
 281         }
 282
 283         p_intf->pf_manage( p_intf );
 284         msleep( INTF_IDLE_SLEEP );
 285     }
 286 }
 287