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 1.31 2001/12/09 17:01:37 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 "defs.h"
  28
  29 #include <string.h>                                    /* memcpy(), memset() */
  30 #include <sys/types.h>                                              /* off_t */
  31
  32 #include "common.h"
  33 #include "intf_msg.h"
  34 #include "threads.h"
  35 #include "mtime.h"
  36
  37 #include "stream_control.h"
  38 #include "input_ext-dec.h"
  39 #include "input_ext-intf.h"
  40 #include "input_ext-plugins.h"
  41
  42 /*****************************************************************************
  43  * input_SetStatus: change the reading status
  44  *****************************************************************************/
  45 void input_SetStatus( input_thread_t * p_input, int i_mode )
  46 {
  47     vlc_mutex_lock( &p_input->stream.stream_lock );
  48
  49     switch( i_mode )
  50     {
  51     case INPUT_STATUS_END:
  52         p_input->stream.i_new_status = PLAYING_S;
  53         p_input->b_eof = 1;
  54         intf_Msg( "input: end of stream" );
  55         break;
  56
  57     case INPUT_STATUS_PLAY:
  58         p_input->stream.i_new_status = PLAYING_S;
  59         intf_Msg( "input: playing at normal rate" );
  60         break;
  61
  62     case INPUT_STATUS_PAUSE:
  63         /* XXX: we don't need to check i_status, because input_clock.c
  64          * does it for us */
  65         p_input->stream.i_new_status = PAUSE_S;
  66         intf_Msg( "input: toggling pause" );
  67         break;
  68
  69     case INPUT_STATUS_FASTER:
  70         /* If we are already going too fast, go back to default rate */
  71         if( p_input->stream.control.i_rate * 8 <= DEFAULT_RATE )
  72         {
  73             p_input->stream.i_new_status = PLAYING_S;
  74             intf_Msg( "input: playing at normal rate" );
  75         }
  76         else
  77         {
  78             p_input->stream.i_new_status = FORWARD_S;
  79
  80             if( p_input->stream.control.i_rate < DEFAULT_RATE
  81                     && p_input->stream.control.i_status == FORWARD_S )
  82             {
  83                 p_input->stream.i_new_rate =
  84                                     p_input->stream.control.i_rate / 2;
  85             }
  86             else
  87             {
  88                 p_input->stream.i_new_rate = DEFAULT_RATE / 2;
  89             }
  90             intf_Msg( "input: playing at %i:1 fast forward",
  91                       DEFAULT_RATE / p_input->stream.i_new_rate );
  92         }
  93         break;
  94
  95     case INPUT_STATUS_SLOWER:
  96         /* If we are already going too slow, go back to default rate */
  97         if( p_input->stream.control.i_rate >= 8 * DEFAULT_RATE )
  98         {
  99             p_input->stream.i_new_status = PLAYING_S;
 100             intf_Msg( "input: playing at normal rate" );
 101         }
 102         else
 103         {
 104             p_input->stream.i_new_status = FORWARD_S;
 105
 106             if( p_input->stream.control.i_rate > DEFAULT_RATE
 107                     && p_input->stream.control.i_status == FORWARD_S )
 108             {
 109                 p_input->stream.i_new_rate =
 110                                     p_input->stream.control.i_rate * 2;
 111             }
 112             else
 113             {
 114                 p_input->stream.i_new_rate = DEFAULT_RATE * 2;
 115             }
 116             intf_Msg( "input: playing at 1:%i slow motion",
 117                       p_input->stream.i_new_rate / DEFAULT_RATE );
 118         }
 119         break;
 120
 121     default:
 122         break;
 123     }
 124
 125     vlc_cond_signal( &p_input->stream.stream_wait );
 126     vlc_mutex_unlock( &p_input->stream.stream_lock );
 127 }
 128
 129 /*****************************************************************************
 130  * input_Seek: changes the stream postion
 131  *****************************************************************************/
 132 void input_Seek( input_thread_t * p_input, off_t i_position )
 133 {
 134     char        psz_time1[OFFSETTOTIME_MAX_SIZE];
 135     char        psz_time2[OFFSETTOTIME_MAX_SIZE];
 136
 137     vlc_mutex_lock( &p_input->stream.stream_lock );
 138     p_input->stream.p_selected_area->i_seek = i_position;
 139
 140     intf_WarnMsg( 3, "input: seeking position %lld/%lld (%s/%s)", i_position,
 141                   p_input->stream.p_selected_area->i_size,
 142                   input_OffsetToTime( p_input, psz_time1, i_position ),
 143                   input_OffsetToTime( p_input, psz_time2,
 144                               p_input->stream.p_selected_area->i_size ) );
 145
 146     vlc_cond_signal( &p_input->stream.stream_wait );
 147     vlc_mutex_unlock( &p_input->stream.stream_lock );
 148 }
 149
 150 /*****************************************************************************
 151  * input_OffsetToTime : converts an off_t value to a time indicator, using
 152  *                      mux_rate
 153  *****************************************************************************
 154  * BEWARE : this function assumes that you already own the lock on
 155  * p_input->stream.stream_lock
 156  *****************************************************************************/
 157 char * input_OffsetToTime( input_thread_t * p_input, char * psz_buffer,
 158                            off_t i_offset )
 159 {
 160     mtime_t         i_seconds;
 161
 162     if( p_input->stream.i_mux_rate )
 163     {
 164         i_seconds = i_offset / 50 / p_input->stream.i_mux_rate;
 165         snprintf( psz_buffer, OFFSETTOTIME_MAX_SIZE, "%d:%02d:%02d",
 166                  (int) (i_seconds / (60 * 60)),
 167                  (int) (i_seconds / 60 % 60),
 168                  (int) (i_seconds % 60) );
 169         return( psz_buffer );
 170     }
 171     else
 172     {
 173         /* Divide by zero is not my friend. */
 174         sprintf( psz_buffer, "-:--:--" );
 175         return( psz_buffer );
 176     }
 177 }
 178
 179 /*****************************************************************************
 180  * input_DumpStream: dumps the contents of a stream descriptor
 181  *****************************************************************************
 182  * BEWARE : this function assumes that you already own the lock on
 183  * p_input->stream.stream_lock
 184  *****************************************************************************/
 185 void input_DumpStream( input_thread_t * p_input )
 186 {
 187     int         i, j;
 188     char        psz_time1[OFFSETTOTIME_MAX_SIZE];
 189     char        psz_time2[OFFSETTOTIME_MAX_SIZE];
 190
 191 #define S   p_input->stream
 192     intf_Msg( "input info: Dumping stream ID 0x%x [OK:%d/D:%d]", S.i_stream_id,
 193               S.c_packets_read, S.c_packets_trashed );
 194     if( S.b_seekable )
 195         intf_Msg( "input info: seekable stream, position: %lld/%lld (%s/%s)",
 196                   S.p_selected_area->i_tell, S.p_selected_area->i_size,
 197                   input_OffsetToTime( p_input, psz_time1,
 198                                       S.p_selected_area->i_tell ),
 199                   input_OffsetToTime( p_input, psz_time2,
 200                                       S.p_selected_area->i_size ) );
 201     else
 202         intf_Msg( "input info: %s", S.b_pace_control ? "pace controlled" :
 203                   "pace un-controlled" );
 204 #undef S
 205     for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
 206     {
 207 #define P   p_input->stream.pp_programs[i]
 208         intf_Msg( "input info: Dumping program 0x%x, version %d (%s)",
 209                   P->i_number, P->i_version,
 210                   P->b_is_ok ? "complete" : "partial" );
 211 #undef P
 212         for( j = 0; j < p_input->stream.pp_programs[i]->i_es_number; j++ )
 213         {
 214 #define ES  p_input->stream.pp_programs[i]->pp_es[j]
 215             intf_Msg( "input info: ES 0x%x, stream 0x%x, type 0x%x, %s [OK:%d/ERR:%d]",
 216                       ES->i_id, ES->i_stream_id, ES->i_type,
 217                       ES->p_decoder_fifo != NULL ? "selected" : "not selected",
 218                       ES->c_packets, ES->c_invalid_packets );
 219 #undef ES
 220         }
 221     }
 222 }
 223
 224 /*****************************************************************************
 225  * input_ChangeES: answers to a user request with calls to (Un)SelectES
 226  *****************************************************************************
 227  * Useful since the interface plugins know p_es
 228  * This functon is deprecated, use input_ToggleEs instead.
 229  *****************************************************************************/
 230 int input_ChangeES( input_thread_t * p_input, es_descriptor_t * p_es,
 231                     u8 i_cat )
 232 {
 233     int                     i_index;
 234     int                     i;
 235
 236     i_index = -1;
 237
 238     vlc_mutex_lock( &p_input->stream.stream_lock );
 239
 240     for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 241     {
 242         if( p_input->stream.pp_selected_es[i]->i_cat == i_cat )
 243         {
 244             i_index = i;
 245             break;
 246         }
 247     }
 248
 249
 250     if( p_es != NULL )
 251     {
 252
 253
 254         if( i_index != -1 )
 255         {
 256
 257             if( p_input->stream.pp_selected_es[i_index] != p_es )
 258             {
 259                 input_UnselectES( p_input,
 260                                   p_input->stream.pp_selected_es[i_index] );
 261                 input_SelectES( p_input, p_es );
 262                 intf_WarnMsg( 3, "input info: es selected -> %s (0x%x)",
 263                                                 p_es->psz_desc, p_es->i_id );
 264             }
 265         }
 266         else
 267         {
 268             input_SelectES( p_input, p_es );
 269             intf_WarnMsg( 3, "input info: es selected -> %s (0x%x)",
 270                           p_es->psz_desc, p_es->i_id );
 271         }
 272     }
 273     else
 274     {
 275         if( i_index != -1 )
 276         {
 277             intf_WarnMsg( 3, "input info: es unselected -> %s (0x%x)",
 278                           p_input->stream.pp_selected_es[i_index]->psz_desc,
 279                           p_input->stream.pp_selected_es[i_index]->i_id );
 280
 281             input_UnselectES( p_input,
 282                               p_input->stream.pp_selected_es[i_index] );
 283         }
 284     }
 285
 286     vlc_mutex_unlock( &p_input->stream.stream_lock );
 287
 288     return 0;
 289 }
 290
 291 /*****************************************************************************
 292  * input_ToggleES: answers to a user request with calls to (Un)SelectES
 293  *****************************************************************************
 294  * Useful since the interface plugins know p_es.
 295  * It only works for audio & spu ( to be sure nothing nasty is being done ).
 296  * b_select is a boolean to know if we have to select or unselect ES
 297  *****************************************************************************/
 298 int input_ToggleES( input_thread_t * p_input, es_descriptor_t * p_es,
 299                     boolean_t b_select )
 300 {
 301
 302     vlc_mutex_lock( &p_input->stream.stream_lock );
 303
 304     if( p_es != NULL )
 305     {
 306         if( b_select )
 307         {
 308             p_input->stream.p_newly_selected_es = p_es;
 309         }
 310         else
 311         {
 312             p_input->stream.p_removed_es = p_es;
 313         }
 314     }
 315
 316     vlc_mutex_unlock( &p_input->stream.stream_lock );
 317
 318     return 0;
 319 }
 320
 321 /****************************************************************************
 322  * input_ChangeArea: interface request an area change
 323  ****************************************************************************/
 324 int input_ChangeArea( input_thread_t * p_input, input_area_t * p_area )
 325 {
 326     vlc_mutex_lock( &p_input->stream.stream_lock );
 327
 328     p_input->stream.p_new_area = p_area;
 329
 330     vlc_mutex_unlock( &p_input->stream.stream_lock );
 331
 332     return 0;
 333 }
 334
 335 /****************************************************************************
 336  * input_ChangeProgram: interface request an area change
 337  ****************************************************************************/
 338 int input_ChangeProgram( input_thread_t * p_input,
 339             pgrm_descriptor_t * p_program )
 340 {
 341     vlc_mutex_lock( &p_input->stream.stream_lock );
 342
 343     p_input->stream.p_new_program = p_program;
 344
 345     vlc_mutex_unlock( &p_input->stream.stream_lock );
 346
 347     return 0;
 348 }
 349
 350 /****************************************************************************
 351  * input_ToggleGrayscale: change to grayscale or color output
 352  ****************************************************************************/
 353 int input_ToggleGrayscale( input_thread_t * p_input )
 354 {
 355     /* No need to warn the input thread since only the decoders and outputs
 356      * worry about it. */
 357     vlc_mutex_lock( &p_input->stream.control.control_lock );
 358     p_input->stream.control.b_grayscale =
 359                     !p_input->stream.control.b_grayscale;
 360
 361     intf_WarnMsg( 3, "input warning: changing to %s output",
 362             p_input->stream.control.b_grayscale ? "grayscale" : "color" );
 363
 364     vlc_mutex_unlock( &p_input->stream.control.control_lock );
 365
 366     return 0;
 367 }
 368
 369 /****************************************************************************
 370  * input_ToggleMute: activate/deactivate mute mode
 371  ****************************************************************************/
 372 int input_ToggleMute( input_thread_t * p_input )
 373 {
 374     /* We need to feed the decoders with 0, and only input can do that, so
 375      * pass the message to the input thread. */
 376     vlc_mutex_lock( &p_input->stream.stream_lock );
 377     p_input->stream.b_new_mute = !p_input->stream.control.b_mute;
 378
 379     intf_WarnMsg( 3, "input warning: %s mute mode",
 380             p_input->stream.control.b_mute ? "activating" : "deactivating" );
 381
 382     vlc_mutex_unlock( &p_input->stream.stream_lock );
 383
 384     return 0;
 385 }
 386
 387 /****************************************************************************
 388  * input_SetSMP: change the number of video decoder threads
 389  ****************************************************************************/
 390 int input_SetSMP( input_thread_t * p_input, int i_smp )
 391 {
 392     /* No need to warn the input thread since only the decoders
 393      * worry about it. */
 394     vlc_mutex_lock( &p_input->stream.control.control_lock );
 395     p_input->stream.control.i_smp = i_smp;
 396     vlc_mutex_unlock( &p_input->stream.control.control_lock );
 397
 398     return 0;
 399 }
 400