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