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

   1 /*****************************************************************************
   2  * input_programs.c: es_descriptor_t, pgrm_descriptor_t management
   3  *****************************************************************************
   4  * Copyright (C) 1999, 2000 VideoLAN
   5  * $Id: input_programs.c,v 1.21 2001/01/07 16:17:58 sam Exp $
   6  *
   7  * Authors:
   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 <stdlib.h>
  30
  31 #include "config.h"
  32 #include "common.h"
  33 #include "threads.h"
  34 #include "mtime.h"
  35 #include "debug.h"
  36
  37 #include "intf_msg.h"
  38
  39 #include "stream_control.h"
  40 #include "input_ext-intf.h"
  41 #include "input_ext-dec.h"
  42 #include "input.h"
  43 #include "input_dec.h"
  44
  45 #include "main.h"                                     /* --noaudio --novideo */
  46
  47 /*
  48  * NOTICE : all of these functions expect you to have taken the lock on
  49  * p_input->stream.lock
  50  */
  51
  52 /*****************************************************************************
  53  * input_InitStream: init the stream descriptor of the given input
  54  *****************************************************************************/
  55 void input_InitStream( input_thread_t * p_input, size_t i_data_len )
  56 {
  57     p_input->stream.i_stream_id = 0;
  58     p_input->stream.pp_es = NULL;
  59     p_input->stream.pp_selected_es = NULL;
  60     p_input->stream.pp_programs = NULL;
  61
  62     if( i_data_len )
  63     {
  64         if ( (p_input->stream.p_demux_data = malloc( i_data_len )) == NULL )
  65         {
  66             intf_ErrMsg( "Unable to allocate memory in input_InitStream");
  67             /* FIXME : find a way to tell if failed */
  68             return;
  69         }
  70         memset( p_input->stream.p_demux_data, 0, i_data_len );
  71     }
  72 }
  73
  74 /*****************************************************************************
  75  * input_EndStream: free all stream descriptors
  76  *****************************************************************************/
  77 void input_EndStream( input_thread_t * p_input )
  78 {
  79     int i;
  80
  81     /* Free all programs and associated ES, and associated decoders. */
  82     for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
  83     {
  84         /* Don't put i instead of 0 !! */
  85         input_DelProgram( p_input, p_input->stream.pp_programs[0] );
  86     }
  87
  88     /* Free standalone ES */
  89     for( i = 0; i < p_input->stream.i_es_number; i++ )
  90     {
  91         input_DelES( p_input, p_input->stream.pp_es[0] );
  92     }
  93 }
  94
  95 /*****************************************************************************
  96  * input_FindProgram: returns a pointer to a program described by its ID
  97  *****************************************************************************/
  98 pgrm_descriptor_t * input_FindProgram( input_thread_t * p_input, u16 i_pgrm_id )
  99 {
 100     int     i;
 101
 102     for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
 103     {
 104         if( p_input->stream.pp_programs[i]->i_number == i_pgrm_id )
 105         {
 106             return p_input->stream.pp_programs[i];
 107         }
 108     }
 109
 110     return( NULL );
 111 }
 112
 113 /*****************************************************************************
 114  * input_AddProgram: add and init a program descriptor
 115  *****************************************************************************
 116  * This program descriptor will be referenced in the given stream descriptor
 117  *****************************************************************************/
 118 pgrm_descriptor_t * input_AddProgram( input_thread_t * p_input,
 119                                       u16 i_pgrm_id, size_t i_data_len )
 120 {
 121     /* Where to add the pgrm */
 122     int i_pgrm_index = p_input->stream.i_pgrm_number;
 123
 124     intf_DbgMsg("Adding description for pgrm %d", i_pgrm_id);
 125
 126     /* Add an entry to the list of program associated with the stream */
 127     p_input->stream.i_pgrm_number++;
 128     p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
 129                                            p_input->stream.i_pgrm_number
 130                                             * sizeof(pgrm_descriptor_t *) );
 131     if( p_input->stream.pp_programs == NULL )
 132     {
 133         intf_ErrMsg( "Unable to realloc memory in input_AddProgram" );
 134         return( NULL );
 135     }
 136
 137     /* Allocate the structure to store this description */
 138     p_input->stream.pp_programs[i_pgrm_index] =
 139                                         malloc( sizeof(pgrm_descriptor_t) );
 140     if( p_input->stream.pp_programs[i_pgrm_index] == NULL )
 141     {
 142         intf_ErrMsg( "Unable to allocate memory in input_AddProgram" );
 143         return( NULL );
 144     }
 145
 146     /* Init this entry */
 147     p_input->stream.pp_programs[i_pgrm_index]->i_number = i_pgrm_id;
 148     p_input->stream.pp_programs[i_pgrm_index]->b_is_ok = 0;
 149     p_input->stream.pp_programs[i_pgrm_index]->i_version = 0;
 150
 151     p_input->stream.pp_programs[i_pgrm_index]->i_es_number = 0;
 152     p_input->stream.pp_programs[i_pgrm_index]->pp_es = NULL;
 153
 154     p_input->stream.pp_programs[i_pgrm_index]->delta_cr = 0;
 155     p_input->stream.pp_programs[i_pgrm_index]->delta_absolute = 0;
 156     p_input->stream.pp_programs[i_pgrm_index]->last_cr = 0;
 157     p_input->stream.pp_programs[i_pgrm_index]->c_average_count = 0;
 158     p_input->stream.pp_programs[i_pgrm_index]->i_synchro_state
 159                                                 = SYNCHRO_NOT_STARTED;
 160     p_input->stream.pp_programs[i_pgrm_index]->b_discontinuity = 0;
 161
 162     p_input->stream.pp_programs[i_pgrm_index]->p_vout
 163                                             = p_input->p_default_vout;
 164     p_input->stream.pp_programs[i_pgrm_index]->p_aout
 165                                             = p_input->p_default_aout;
 166
 167     if( i_data_len )
 168     {
 169         p_input->stream.pp_programs[i_pgrm_index]->p_demux_data =
 170             malloc( i_data_len );
 171         if( p_input->stream.pp_programs[i_pgrm_index]->p_demux_data == NULL )
 172         {
 173             intf_ErrMsg( "Unable to allocate memory in input_AddProgram" );
 174             return( NULL );
 175         }
 176         memset( p_input->stream.pp_programs[i_pgrm_index]->p_demux_data, 0,
 177                 i_data_len );
 178     }
 179
 180     return p_input->stream.pp_programs[i_pgrm_index];
 181 }
 182
 183 /*****************************************************************************
 184  * input_DelProgram: destroy a program descriptor
 185  *****************************************************************************
 186  * All ES descriptions referenced in the descriptor will be deleted.
 187  *****************************************************************************/
 188 void input_DelProgram( input_thread_t * p_input, pgrm_descriptor_t * p_pgrm )
 189 {
 190     int i_index, i_pgrm_index;
 191
 192     ASSERT( p_pgrm );
 193
 194     intf_DbgMsg("Deleting description for pgrm %d", p_pgrm->i_number);
 195
 196     /* Free the structures that describe the es that belongs to that program */
 197     for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
 198     {
 199         input_DelES( p_input, p_pgrm->pp_es[i_index] );
 200     }
 201
 202     /* Free the demux data */
 203     if( p_pgrm->p_demux_data != NULL )
 204     {
 205         free( p_pgrm->p_demux_data );
 206     }
 207
 208     /* Find the program in the programs table */
 209     for( i_pgrm_index = 0; i_pgrm_index < p_input->stream.i_pgrm_number;
 210          i_pgrm_index++ )
 211     {
 212         if( p_input->stream.pp_programs[i_pgrm_index] == p_pgrm )
 213             break;
 214     }
 215
 216     /* Remove this program from the stream's list of programs */
 217     p_input->stream.i_pgrm_number--;
 218
 219     p_input->stream.pp_programs[i_pgrm_index] =
 220         p_input->stream.pp_programs[p_input->stream.i_pgrm_number];
 221     p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
 222                                            p_input->stream.i_pgrm_number
 223                                             * sizeof(pgrm_descriptor_t *) );
 224
 225     if( p_input->stream.i_pgrm_number && p_input->stream.pp_programs == NULL)
 226     {
 227         intf_ErrMsg( "input error: unable to realloc program list"
 228                      " in input_DelProgram" );
 229     }
 230
 231     /* Free the description of this program */
 232     free( p_pgrm );
 233 }
 234
 235 /*****************************************************************************
 236  * input_FindES: returns a pointer to an ES described by its ID
 237  *****************************************************************************/
 238 es_descriptor_t * input_FindES( input_thread_t * p_input, u16 i_es_id )
 239 {
 240     int     i;
 241
 242     for( i = 0; i < p_input->stream.i_es_number; i++ )
 243     {
 244         if( p_input->stream.pp_es[i]->i_id == i_es_id )
 245         {
 246             return p_input->stream.pp_es[i];
 247         }
 248     }
 249
 250     return( NULL );
 251 }
 252
 253 /*****************************************************************************
 254  * input_AddES:
 255  *****************************************************************************
 256  * Reserve a slot in the table of ES descriptors for the ES and add it to the
 257  * list of ES of p_pgrm. If p_pgrm if NULL, then the ES is considered as stand
 258  * alone (PSI ?)
 259  *****************************************************************************/
 260 es_descriptor_t * input_AddES( input_thread_t * p_input,
 261                                pgrm_descriptor_t * p_pgrm, u16 i_es_id,
 262                                size_t i_data_len )
 263 {
 264     es_descriptor_t * p_es;
 265
 266     intf_DbgMsg("Adding description for ES 0x%x", i_es_id);
 267
 268     p_es = (es_descriptor_t *)malloc( sizeof(es_descriptor_t) );
 269     if( p_es == NULL )
 270     {
 271         intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 272         return( NULL);
 273     }
 274     p_input->stream.i_es_number++;
 275     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 276                                      p_input->stream.i_es_number
 277                                       * sizeof(es_descriptor_t *) );
 278     if( p_input->stream.pp_es == NULL )
 279     {
 280         intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 281         return( NULL );
 282     }
 283     p_input->stream.pp_es[p_input->stream.i_es_number - 1] = p_es;
 284     p_es->i_id = i_es_id;
 285
 286     /* Init its values */
 287     p_es->b_discontinuity = 0;
 288     p_es->p_pes = NULL;
 289     p_es->p_decoder_fifo = NULL;
 290
 291     if( i_data_len )
 292     {
 293         p_es->p_demux_data = malloc( i_data_len );
 294         if( p_es->p_demux_data == NULL )
 295         {
 296             intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 297             return( NULL );
 298         }
 299         memset( p_es->p_demux_data, 0, i_data_len );
 300     }
 301     else
 302     {
 303         p_es->p_demux_data = NULL;
 304     }
 305
 306     /* Add this ES to the program definition if one is given */
 307     if( p_pgrm )
 308     {
 309         p_pgrm->i_es_number++;
 310         p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 311                                  p_pgrm->i_es_number
 312                                   * sizeof(es_descriptor_t *) );
 313         if( p_pgrm->pp_es == NULL )
 314         {
 315             intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 316             return( NULL );
 317         }
 318         p_pgrm->pp_es[p_pgrm->i_es_number - 1] = p_es;
 319         p_es->p_pgrm = p_pgrm;
 320     }
 321     else
 322     {
 323         p_es->p_pgrm = NULL;
 324     }
 325
 326     return p_es;
 327 }
 328
 329 /*****************************************************************************
 330  * input_DelES:
 331  *****************************************************************************/
 332 void input_DelES( input_thread_t * p_input, es_descriptor_t * p_es )
 333 {
 334     int                     i_index, i_es_index;
 335     pgrm_descriptor_t *     p_pgrm;
 336
 337     ASSERT( p_es );
 338     p_pgrm = p_es->p_pgrm;
 339
 340     /* Kill associated decoder, if any. */
 341     if( p_es->p_decoder_fifo != NULL )
 342     {
 343         input_EndDecoder( p_es->p_decoder_fifo, p_es->thread_id );
 344         free( p_es->p_decoder_fifo );
 345     }
 346
 347     /* Remove this ES from the description of the program if it is associated to
 348      * one */
 349     if( p_pgrm )
 350     {
 351         for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
 352         {
 353             if( p_pgrm->pp_es[i_index] == p_es )
 354             {
 355                 p_pgrm->i_es_number--;
 356                 p_pgrm->pp_es[i_index] = p_pgrm->pp_es[p_pgrm->i_es_number];
 357                 p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 358                                          p_pgrm->i_es_number
 359                                           * sizeof(es_descriptor_t *));
 360                 if( p_pgrm->i_es_number && p_pgrm->pp_es == NULL )
 361                 {
 362                     intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 363                 }
 364                 break;
 365             }
 366         }
 367     }
 368
 369     /* Free the demux data */
 370     if( p_es->p_demux_data != NULL )
 371     {
 372         free( p_es->p_demux_data );
 373     }
 374
 375     /* Find the ES in the ES table */
 376     for( i_es_index = 0; i_es_index < p_input->stream.i_es_number;
 377          i_es_index++ )
 378     {
 379         if( p_input->stream.pp_es[i_es_index] == p_es )
 380             break;
 381     }
 382
 383     /* Free the ES */
 384     free( p_es );
 385     p_input->stream.i_es_number--;
 386     p_input->stream.pp_es[i_es_index] =
 387                     p_input->stream.pp_es[p_input->stream.i_es_number];
 388     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 389                                      p_input->stream.i_es_number
 390                                       * sizeof(es_descriptor_t *));
 391     if( p_input->stream.i_es_number && p_input->stream.pp_es == NULL )
 392     {
 393         intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 394     }
 395
 396 }
 397
 398 #ifdef STATS
 399 /*****************************************************************************
 400  * input_DumpStream: dumps the contents of a stream descriptor
 401  *****************************************************************************/
 402 void input_DumpStream( input_thread_t * p_input )
 403 {
 404     int i, j;
 405 #define S   p_input->stream
 406     intf_Msg( "input info: Dumping stream ID 0x%x", S.i_stream_id );
 407     if( S.b_seekable )
 408         intf_Msg( "input info: seekable stream, position: %d/%d",
 409                   S.i_tell, S.i_size );
 410     else
 411         intf_Msg( "input info: %s", S.b_pace_control ? "pace controlled" :
 412                   "pace un-controlled" );
 413 #undef S
 414     for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
 415     {
 416 #define P   p_input->stream.pp_programs[i]
 417         intf_Msg( "input info: Dumping program 0x%x, version %d (%s)",
 418                   P->i_number, P->i_version,
 419                   P->b_is_ok ? "complete" : "partial" );
 420         if( P->i_synchro_state == SYNCHRO_OK )
 421             intf_Msg( "input info: synchro absolute delta : %lld (jitter : %lld)",
 422                       P->delta_absolute, P->delta_cr );
 423 #undef P
 424         for( j = 0; j < p_input->stream.pp_programs[i]->i_es_number; j++ )
 425         {
 426 #define ES  p_input->stream.pp_programs[i]->pp_es[j]
 427             intf_Msg( "input info: ES 0x%x, stream 0x%x, type 0x%x, %s",
 428                       ES->i_id, ES->i_stream_id, ES->i_type,
 429                       ES->p_decoder_fifo != NULL ? "selected" : "not selected");
 430 #undef ES
 431         }
 432     }
 433 }
 434 #endif
 435
 436 /*****************************************************************************
 437  * InitDecConfig: initializes a decoder_config_t
 438  *****************************************************************************/
 439 static int InitDecConfig( input_thread_t * p_input, es_descriptor_t * p_es,
 440                           decoder_config_t * p_config )
 441 {
 442     p_config->i_id = p_es->i_id;
 443     p_config->i_type = p_es->i_type;
 444     p_config->p_stream_ctrl =
 445         &p_input->stream.control;
 446
 447     /* Decoder FIFO */
 448     if( (p_config->p_decoder_fifo =
 449             (decoder_fifo_t *)malloc( sizeof(decoder_fifo_t) )) == NULL )
 450     {
 451         intf_ErrMsg( "Out of memory" );
 452         return( -1 );
 453     }
 454
 455     vlc_mutex_init(&p_config->p_decoder_fifo->data_lock);
 456     vlc_cond_init(&p_config->p_decoder_fifo->data_wait);
 457     p_config->p_decoder_fifo->i_start = p_config->p_decoder_fifo->i_end = 0;
 458     p_config->p_decoder_fifo->b_die = p_config->p_decoder_fifo->b_error = 0;
 459     p_config->p_decoder_fifo->p_packets_mgt = p_input->p_method_data;
 460     p_config->p_decoder_fifo->pf_delete_pes =
 461         p_input->p_plugin->pf_delete_pes;
 462     p_es->p_decoder_fifo = p_config->p_decoder_fifo;
 463
 464     p_config->pf_init_bit_stream = InitBitstream;
 465
 466     return( 0 );
 467 }
 468
 469 /*****************************************************************************
 470  * GetVdecConfig: returns a valid vdec_config_t
 471  *****************************************************************************/
 472 static vdec_config_t * GetVdecConfig( input_thread_t * p_input,
 473                                       es_descriptor_t * p_es )
 474 {
 475     vdec_config_t *     p_config;
 476
 477     p_config = (vdec_config_t *)malloc( sizeof(vdec_config_t) );
 478     if( p_config == NULL )
 479     {
 480         intf_ErrMsg( "Unable to allocate memory in GetVdecConfig" );
 481         return( NULL );
 482     }
 483     p_config->p_vout = p_input->p_default_vout;
 484     if( InitDecConfig( p_input, p_es, &p_config->decoder_config ) == -1 )
 485     {
 486         free( p_config );
 487         return( NULL );
 488     }
 489
 490     return( p_config );
 491 }
 492
 493 /*****************************************************************************
 494  * GetAdecConfig: returns a valid adec_config_t
 495  *****************************************************************************/
 496 static adec_config_t * GetAdecConfig( input_thread_t * p_input,
 497                                       es_descriptor_t * p_es )
 498 {
 499     adec_config_t *     p_config;
 500
 501     p_config = (adec_config_t *)malloc( sizeof(adec_config_t));
 502     if( p_config == NULL )
 503     {
 504         intf_ErrMsg( "Unable to allocate memory in GetAdecConfig" );
 505         return( NULL );
 506     }
 507     p_config->p_aout = p_input->p_default_aout;
 508     if( InitDecConfig( p_input, p_es, &p_config->decoder_config ) == -1 )
 509     {
 510         free( p_config );
 511         return( NULL );
 512     }
 513
 514     return( p_config );
 515 }
 516
 517 /*****************************************************************************
 518  * input_SelectES: selects an ES and spawns the associated decoder
 519  *****************************************************************************/
 520 /* FIXME */
 521 vlc_thread_t adec_CreateThread( void * );
 522 vlc_thread_t ac3dec_CreateThread( void * );
 523 vlc_thread_t vpar_CreateThread( void * );
 524 vlc_thread_t spudec_CreateThread( void * );
 525
 526 int input_SelectES( input_thread_t * p_input, es_descriptor_t * p_es )
 527 {
 528     /* FIXME ! */
 529     decoder_capabilities_t  decoder;
 530
 531 #ifdef DEBUG_INPUT
 532     intf_DbgMsg( "Selecting ES 0x%x", p_es->i_id );
 533 #endif
 534
 535     if( p_es->p_decoder_fifo != NULL )
 536     {
 537         intf_ErrMsg( "ES %d is already selected", p_es->i_id );
 538         return( -1 );
 539     }
 540
 541     switch( p_es->i_type )
 542     {
 543     case MPEG1_AUDIO_ES:
 544     case MPEG2_AUDIO_ES:
 545         if( p_main->b_audio )
 546         {
 547             decoder.pf_create_thread = adec_CreateThread;
 548             p_es->thread_id = input_RunDecoder( &decoder,
 549                                     (void *)GetAdecConfig( p_input, p_es ) );
 550         }
 551         break;
 552
 553     case MPEG1_VIDEO_ES:
 554     case MPEG2_VIDEO_ES:
 555         if( p_main->b_video )
 556         {
 557             decoder.pf_create_thread = vpar_CreateThread;
 558             p_es->thread_id = input_RunDecoder( &decoder,
 559                                     (void *)GetVdecConfig( p_input, p_es ) );
 560         }
 561         break;
 562
 563     case AC3_AUDIO_ES:
 564         if( p_main->b_audio )
 565         {
 566             decoder.pf_create_thread = ac3dec_CreateThread;
 567             p_es->thread_id = input_RunDecoder( &decoder,
 568                                     (void *)GetAdecConfig( p_input, p_es ) );
 569         }
 570         break;
 571
 572     case DVD_SPU_ES:
 573         if( p_main->b_video )
 574         {
 575             decoder.pf_create_thread = spudec_CreateThread;
 576             p_es->thread_id = input_RunDecoder( &decoder,
 577                                     (void *)GetVdecConfig( p_input, p_es ) );
 578         }
 579         break;
 580
 581     default:
 582         intf_ErrMsg( "Unknown stream type %d", p_es->i_type );
 583         return( -1 );
 584         break;
 585     }
 586
 587     if( p_es->p_decoder_fifo != NULL )
 588     {
 589         p_input->stream.i_selected_es_number++;
 590         p_input->stream.pp_selected_es = realloc(
 591                                            p_input->stream.pp_selected_es,
 592                                            p_input->stream.i_selected_es_number
 593                                             * sizeof(es_descriptor_t *) );
 594         if( p_input->stream.pp_selected_es == NULL )
 595         {
 596             intf_ErrMsg( "Unable to realloc memory in input_SelectES" );
 597             return(-1);
 598         }
 599         p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number - 1]
 600                 = p_es;
 601     }
 602     return( 0 );
 603 }