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