git.sesse.net Git - vlc/blob - src/input/input_ext-intf.c

   1 /*****************************************************************************
   2  * input_ext-intf.c: services to the interface
   3  *****************************************************************************
   4  * Copyright (C) 1998-2001 VideoLAN
   5  * $Id: input_ext-intf.c,v 1.46 2002/12/25 23:39:01 sam Exp $
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   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 <string.h>                                    /* memcpy(), memset() */
  28
  29 #include <vlc/vlc.h>
  30
  31 #include "stream_control.h"
  32 #include "input_ext-dec.h"
  33 #include "input_ext-intf.h"
  34 #include "input_ext-plugins.h"
  35
  36 /*****************************************************************************
  37  * input_SetStatus: change the reading status
  38  *****************************************************************************/
  39 void __input_SetStatus( vlc_object_t * p_this, int i_mode )
  40 {
  41     input_thread_t *p_input;
  42
  43     p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
  44
  45     if( p_input == NULL )
  46     {
  47         msg_Err( p_this, "no input found" );
  48         return;
  49     }
  50
  51     vlc_mutex_lock( &p_input->stream.stream_lock );
  52
  53     switch( i_mode )
  54     {
  55     case INPUT_STATUS_END:
  56         p_input->stream.i_new_status = PLAYING_S;
  57         p_input->b_eof = 1;
  58         msg_Dbg( p_input, "end of stream" );
  59         break;
  60
  61     case INPUT_STATUS_PLAY:
  62         p_input->stream.i_new_status = PLAYING_S;
  63         msg_Dbg( p_input, "playing at normal rate" );
  64         break;
  65
  66     case INPUT_STATUS_PAUSE:
  67         /* XXX: we don't need to check i_status, because input_clock.c
  68          * does it for us */
  69         p_input->stream.i_new_status = PAUSE_S;
  70         msg_Dbg( p_input, "toggling pause" );
  71         break;
  72
  73     case INPUT_STATUS_FASTER:
  74         /* If we are already going too fast, go back to default rate */
  75         if( p_input->stream.control.i_rate * 8 <= DEFAULT_RATE )
  76         {
  77             p_input->stream.i_new_status = PLAYING_S;
  78             msg_Dbg( p_input, "playing at normal rate" );
  79         }
  80         else
  81         {
  82             p_input->stream.i_new_status = FORWARD_S;
  83
  84             if( p_input->stream.control.i_rate < DEFAULT_RATE
  85                     && p_input->stream.control.i_status == FORWARD_S )
  86             {
  87                 p_input->stream.i_new_rate =
  88                                     p_input->stream.control.i_rate / 2;
  89             }
  90             else
  91             {
  92                 p_input->stream.i_new_rate = DEFAULT_RATE / 2;
  93             }
  94             msg_Dbg( p_input, "playing at %i:1 fast forward",
  95                      DEFAULT_RATE / p_input->stream.i_new_rate );
  96         }
  97         break;
  98
  99     case INPUT_STATUS_SLOWER:
 100         /* If we are already going too slow, go back to default rate */
 101         if( p_input->stream.control.i_rate >= 8 * DEFAULT_RATE )
 102         {
 103             p_input->stream.i_new_status = PLAYING_S;
 104             msg_Dbg( p_input, "playing at normal rate" );
 105         }
 106         else
 107         {
 108             p_input->stream.i_new_status = FORWARD_S;
 109
 110             if( p_input->stream.control.i_rate > DEFAULT_RATE
 111                     && p_input->stream.control.i_status == FORWARD_S )
 112             {
 113                 p_input->stream.i_new_rate =
 114                                     p_input->stream.control.i_rate * 2;
 115             }
 116             else
 117             {
 118                 p_input->stream.i_new_rate = DEFAULT_RATE * 2;
 119             }
 120             msg_Dbg( p_input, "playing at 1:%i slow motion",
 121                       p_input->stream.i_new_rate / DEFAULT_RATE );
 122         }
 123         break;
 124
 125     default:
 126         break;
 127     }
 128
 129     vlc_cond_signal( &p_input->stream.stream_wait );
 130     vlc_mutex_unlock( &p_input->stream.stream_lock );
 131
 132     vlc_object_release( p_input );
 133 }
 134
 135 /*****************************************************************************
 136  * input_Seek: changes the stream postion
 137  *****************************************************************************/
 138 void __input_Seek( vlc_object_t * p_this, off_t i_position, int i_whence )
 139 {
 140     input_thread_t *p_input;
 141
 142     char psz_time1[OFFSETTOTIME_MAX_SIZE];
 143     char psz_time2[OFFSETTOTIME_MAX_SIZE];
 144
 145     p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
 146
 147     if( p_input == NULL )
 148     {
 149         msg_Err( p_this, "no input found" );
 150         return;
 151     }
 152
 153     vlc_mutex_lock( &p_input->stream.stream_lock );
 154
 155 #define A p_input->stream.p_selected_area
 156     switch( i_whence & 0x30 )
 157     {
 158         case INPUT_SEEK_SECONDS:
 159             i_position *= (off_t)50 * p_input->stream.i_mux_rate;
 160             break;
 161
 162         case INPUT_SEEK_PERCENT:
 163             i_position = A->i_size * i_position / (off_t)100;
 164             break;
 165
 166         case INPUT_SEEK_BYTES:
 167         default:
 168             break;
 169     }
 170
 171     switch( i_whence & 0x03 )
 172     {
 173         case INPUT_SEEK_CUR:
 174             A->i_seek = A->i_tell + i_position;
 175             break;
 176
 177         case INPUT_SEEK_END:
 178             A->i_seek = A->i_size + i_position;
 179             break;
 180
 181         case INPUT_SEEK_SET:
 182         default:
 183             A->i_seek = i_position;
 184             break;
 185     }
 186
 187     if( A->i_seek < 0 )
 188     {
 189         A->i_seek = 0;
 190     }
 191     else if( A->i_seek > A->i_size )
 192     {
 193         A->i_seek = A->i_size;
 194     }
 195
 196     msg_Dbg( p_input, "seeking position "I64Fd"/"I64Fd" (%s/%s)",
 197              A->i_seek, A->i_size,
 198              input_OffsetToTime( p_input, psz_time1, i_position ),
 199              input_OffsetToTime( p_input, psz_time2, A->i_size ) );
 200 #undef A
 201
 202     vlc_cond_signal( &p_input->stream.stream_wait );
 203     vlc_mutex_unlock( &p_input->stream.stream_lock );
 204
 205     vlc_object_release( p_input );
 206 }
 207
 208 /*****************************************************************************
 209  * input_Tell: requests the stream postion
 210  *****************************************************************************/
 211 void __input_Tell( vlc_object_t * p_this, stream_position_t * p_position )
 212 {
 213     input_thread_t *p_input;
 214
 215     p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
 216
 217     if( p_input == NULL )
 218     {
 219         p_position->i_tell = 0;
 220         p_position->i_size = 0;
 221         p_position->i_mux_rate = 0;
 222         msg_Err( p_this, "no input found" );
 223         return;
 224     }
 225
 226     vlc_mutex_lock( &p_input->stream.stream_lock );
 227
 228 #define A p_input->stream.p_selected_area
 229     p_position->i_tell = A->i_tell;
 230     p_position->i_size = A->i_size;
 231     p_position->i_mux_rate = p_input->stream.i_mux_rate;
 232 #undef A
 233
 234     vlc_mutex_unlock( &p_input->stream.stream_lock );
 235     vlc_object_release( p_input );
 236 }
 237
 238 /*****************************************************************************
 239  * input_OffsetToTime : converts an off_t value to a time indicator, using
 240  *                      mux_rate
 241  *****************************************************************************
 242  * BEWARE : this function assumes that you already own the lock on
 243  * p_input->stream.stream_lock
 244  *****************************************************************************/
 245 char * input_OffsetToTime( input_thread_t * p_input, char * psz_buffer,
 246                            off_t i_offset )
 247 {
 248     mtime_t         i_seconds;
 249
 250     if( p_input->stream.i_mux_rate )
 251     {
 252         i_seconds = i_offset / 50 / p_input->stream.i_mux_rate;
 253         snprintf( psz_buffer, OFFSETTOTIME_MAX_SIZE, "%d:%02d:%02d",
 254                  (int) (i_seconds / (60 * 60)),
 255                  (int) (i_seconds / 60 % 60),
 256                  (int) (i_seconds % 60) );
 257         return( psz_buffer );
 258     }
 259     else
 260     {
 261         /* Divide by zero is not my friend. */
 262         sprintf( psz_buffer, "-:--:--" );
 263         return( psz_buffer );
 264     }
 265 }
 266
 267 /*****************************************************************************
 268  * input_DumpStream: dumps the contents of a stream descriptor
 269  *****************************************************************************
 270  * BEWARE : this function assumes that you already own the lock on
 271  * p_input->stream.stream_lock
 272  *****************************************************************************/
 273 void input_DumpStream( input_thread_t * p_input )
 274 {
 275     char psz_time1[OFFSETTOTIME_MAX_SIZE];
 276     char psz_time2[OFFSETTOTIME_MAX_SIZE];
 277     unsigned int i, j;
 278
 279 #define S   p_input->stream
 280     msg_Dbg( p_input, "dumping stream ID 0x%x [OK:%ld/D:%ld]", S.i_stream_id,
 281              S.c_packets_read, S.c_packets_trashed );
 282     if( S.b_seekable )
 283         msg_Dbg( p_input, "seekable stream, position: "I64Fd"/"I64Fd" (%s/%s)",
 284                  S.p_selected_area->i_tell, S.p_selected_area->i_size,
 285                  input_OffsetToTime( p_input, psz_time1,
 286                                      S.p_selected_area->i_tell ),
 287                  input_OffsetToTime( p_input, psz_time2,
 288                                      S.p_selected_area->i_size ) );
 289     else
 290         msg_Dbg( p_input, "pace %scontrolled", S.b_pace_control ? "" : "un-" );
 291 #undef S
 292     for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
 293     {
 294 #define P   p_input->stream.pp_programs[i]
 295         msg_Dbg( p_input, "dumping program 0x%x, version %d (%s)",
 296                  P->i_number, P->i_version,
 297                  P->b_is_ok ? "complete" : "partial" );
 298 #undef P
 299         for( j = 0; j < p_input->stream.pp_programs[i]->i_es_number; j++ )
 300         {
 301 #define ES  p_input->stream.pp_programs[i]->pp_es[j]
 302             msg_Dbg( p_input, "ES 0x%x, "
 303                      "stream 0x%x, fourcc `%4.4s', %s [OK:%ld/ERR:%ld]",
 304                      ES->i_id, ES->i_stream_id, (char*)&ES->i_fourcc,
 305                      ES->p_decoder_fifo != NULL ? "selected" : "not selected",
 306                      ES->c_packets, ES->c_invalid_packets );
 307 #undef ES
 308         }
 309     }
 310 }
 311
 312 /*****************************************************************************
 313  * input_ToggleES: answers to a user request with calls to (Un)SelectES
 314  *****************************************************************************
 315  * Useful since the interface plugins know p_es.
 316  * It only works for audio & spu ( to be sure nothing nasty is being done ).
 317  * b_select is a boolean to know if we have to select or unselect ES
 318  *****************************************************************************/
 319 int input_ToggleES( input_thread_t * p_input, es_descriptor_t * p_es,
 320                     vlc_bool_t b_select )
 321 {
 322     vlc_mutex_lock( &p_input->stream.stream_lock );
 323
 324     if( p_es != NULL )
 325     {
 326         if( b_select )
 327         {
 328             p_input->stream.p_newly_selected_es = p_es;
 329         }
 330         else
 331         {
 332             p_input->stream.p_removed_es = p_es;
 333         }
 334     }
 335
 336     vlc_mutex_unlock( &p_input->stream.stream_lock );
 337
 338     return 0;
 339 }
 340
 341 /****************************************************************************
 342  * input_ChangeArea: interface request an area change
 343  ****************************************************************************/
 344 int input_ChangeArea( input_thread_t * p_input, input_area_t * p_area )
 345 {
 346     vlc_mutex_lock( &p_input->stream.stream_lock );
 347
 348     p_input->stream.p_new_area = p_area;
 349
 350     vlc_mutex_unlock( &p_input->stream.stream_lock );
 351
 352     return 0;
 353 }
 354
 355 /****************************************************************************
 356  * input_ChangeProgram: interface request a program change
 357  ****************************************************************************/
 358 int input_ChangeProgram( input_thread_t * p_input, uint16_t i_program_number )
 359 {
 360     pgrm_descriptor_t *       p_program;
 361
 362     vlc_mutex_lock( &p_input->stream.stream_lock );
 363
 364     p_program = input_FindProgram( p_input, i_program_number );
 365
 366     if ( p_program == NULL )
 367     {
 368         msg_Err( p_input, "could not find selected program" );
 369         return -1;
 370     }
 371
 372     p_input->stream.p_new_program = p_program;
 373
 374     vlc_mutex_unlock( &p_input->stream.stream_lock );
 375
 376     return 0;
 377 }
 378
 379 /****************************************************************************
 380  * input_ToggleGrayscale: change to grayscale or color output
 381  ****************************************************************************/
 382 int input_ToggleGrayscale( input_thread_t * p_input )
 383 {
 384     /* No need to warn the input thread since only the decoders and outputs
 385      * worry about it. */
 386     vlc_mutex_lock( &p_input->stream.control.control_lock );
 387     p_input->stream.control.b_grayscale =
 388                     !p_input->stream.control.b_grayscale;
 389
 390     msg_Dbg( p_input, "changing to %s output",
 391              p_input->stream.control.b_grayscale ? "grayscale" : "color" );
 392
 393     vlc_mutex_unlock( &p_input->stream.control.control_lock );
 394
 395     return 0;
 396 }
 397
 398 /****************************************************************************
 399  * input_ToggleMute: activate/deactivate mute mode
 400  ****************************************************************************/
 401 int input_ToggleMute( input_thread_t * p_input )
 402 {
 403     /* We need to feed the decoders with 0, and only input can do that, so
 404      * pass the message to the input thread. */
 405     vlc_mutex_lock( &p_input->stream.stream_lock );
 406     p_input->stream.b_new_mute = !p_input->stream.control.b_mute;
 407
 408     msg_Dbg( p_input, "%s mute mode",
 409              p_input->stream.control.b_mute ? "activating" : "deactivating" );
 410
 411     vlc_mutex_unlock( &p_input->stream.stream_lock );
 412
 413     return 0;
 414 }
 415