git.sesse.net Git - vlc/blob - modules/demux/subtitle.c

   1 /*****************************************************************************
   2  * subtitle.c: Demux for subtitle text files.
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Derk-Jan Hartman <hartman at videolan dot org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <stdlib.h>
  29
  30 #include <errno.h>
  31 #ifdef HAVE_SYS_TYPES_H
  32 #   include <sys/types.h>
  33 #endif
  34 #include <ctype.h>
  35
  36 #include <vlc/vlc.h>
  37 #include <vlc/input.h>
  38 #include "vlc_video.h"
  39
  40
  41 #if (!defined( WIN32 ) || defined(__MINGW32__))
  42 #    include <dirent.h>
  43 #endif
  44
  45 /*****************************************************************************
  46  * Module descriptor
  47  *****************************************************************************/
  48 static int  Open ( vlc_object_t *p_this );
  49 static void Close( vlc_object_t *p_this );
  50
  51 #define SUB_DELAY_LONGTEXT \
  52     "Delay subtitles (in 1/10s)"
  53 #define SUB_FPS_LONGTEXT \
  54     "Override frames per second. " \
  55     "It will only work with MicroDVD subtitles."
  56 #define SUB_TYPE_LONGTEXT \
  57     "One from \"microdvd\", \"subrip\", \"ssa1\", \"ssa2-4\", \"vplayer\" " \
  58     "\"sami\" (auto for autodetection, it should always work)."
  59 static char *ppsz_sub_type[] =
  60 {
  61     "auto", "microdvd", "subrip", "subviewer", "ssa1",
  62     "ssa2-4", "vplayer", "sami"
  63 };
  64
  65 vlc_module_begin();
  66     set_description( _("Text subtitles demux") );
  67     set_capability( "demux2", 0 );
  68     set_category( CAT_INPUT );
  69     set_subcategory( SUBCAT_INPUT_DEMUX );
  70     add_float( "sub-fps", 0.0, NULL,
  71                N_("Frames per second"),
  72                SUB_FPS_LONGTEXT, VLC_TRUE );
  73     add_integer( "sub-delay", 0, NULL,
  74                N_("Subtitles delay"),
  75                SUB_DELAY_LONGTEXT, VLC_TRUE );
  76     add_string( "sub-type", "auto", NULL, "Subtitles fileformat",
  77                 SUB_TYPE_LONGTEXT, VLC_TRUE );
  78         change_string_list( ppsz_sub_type, 0, 0 );
  79     set_callbacks( Open, Close );
  80
  81     add_shortcut( "subtitle" );
  82 vlc_module_end();
  83
  84 /*****************************************************************************
  85  * Prototypes:
  86  *****************************************************************************/
  87 enum
  88 {
  89     SUB_TYPE_UNKNOWN = -1,
  90     SUB_TYPE_MICRODVD,
  91     SUB_TYPE_SUBRIP,
  92     SUB_TYPE_SSA1,
  93     SUB_TYPE_SSA2_4,
  94     SUB_TYPE_VPLAYER,
  95     SUB_TYPE_SAMI,
  96     SUB_TYPE_SUBVIEWER,
  97 };
  98
  99 typedef struct
 100 {
 101     int     i_line_count;
 102     int     i_line;
 103     char    **line;
 104 } text_t;
 105 static int  TextLoad( text_t *, stream_t *s );
 106 static void TextUnload( text_t * );
 107
 108 typedef struct
 109 {
 110     int64_t i_start;
 111     int64_t i_stop;
 112
 113     char    *psz_text;
 114 } subtitle_t;
 115
 116
 117 struct demux_sys_t
 118 {
 119     int         i_type;
 120     text_t      txt;
 121     es_out_id_t *es;
 122
 123     int64_t     i_next_demux_date;
 124
 125     int64_t     i_microsecperframe;
 126     int64_t     i_original_mspf;
 127
 128     char        *psz_header;
 129     int         i_subtitle;
 130     int         i_subtitles;
 131     subtitle_t  *subtitle;
 132
 133     int64_t     i_length;
 134 };
 135
 136 static int  ParseMicroDvd ( demux_t *, subtitle_t * );
 137 static int  ParseSubRip   ( demux_t *, subtitle_t * );
 138 static int  ParseSubViewer( demux_t *, subtitle_t * );
 139 static int  ParseSSA      ( demux_t *, subtitle_t * );
 140 static int  ParseVplayer  ( demux_t *, subtitle_t * );
 141 static int  ParseSami     ( demux_t *, subtitle_t * );
 142
 143 static struct
 144 {
 145     char *psz_type_name;
 146     int  i_type;
 147     char *psz_name;
 148     int  (*pf_read)( demux_t *, subtitle_t* );
 149 } sub_read_subtitle_function [] =
 150 {
 151     { "microdvd",   SUB_TYPE_MICRODVD,  "MicroDVD", ParseMicroDvd },
 152     { "subrip",     SUB_TYPE_SUBRIP,    "SubRIP",   ParseSubRip },
 153     { "subviewer",  SUB_TYPE_SUBVIEWER, "SubViewer",ParseSubViewer },
 154     { "ssa1",       SUB_TYPE_SSA1,      "SSA-1",    ParseSSA },
 155     { "ssa2-4",     SUB_TYPE_SSA2_4,    "SSA-2/3/4",ParseSSA },
 156     { "vplayer",    SUB_TYPE_VPLAYER,   "VPlayer",  ParseVplayer },
 157     { "sami",       SUB_TYPE_SAMI,      "SAMI",     ParseSami },
 158     { NULL,         SUB_TYPE_UNKNOWN,   "Unknown",  NULL }
 159 };
 160
 161 static int Demux( demux_t * );
 162 static int Control( demux_t *, int, va_list );
 163
 164 static void Fix( demux_t * );
 165
 166 /*****************************************************************************
 167  * Module initializer
 168  *****************************************************************************/
 169 static int Open ( vlc_object_t *p_this )
 170 {
 171     demux_t     *p_demux = (demux_t*)p_this;
 172     demux_sys_t *p_sys;
 173     es_format_t fmt;
 174     float f_fps;
 175     char *psz_type;
 176     int  (*pf_read)( demux_t *, subtitle_t* );
 177     int i, i_max;
 178
 179     if( strcmp( p_demux->psz_demux, "subtitle" ) )
 180     {
 181         msg_Dbg( p_demux, "subtitle demux discarded" );
 182         return VLC_EGENERIC;
 183     }
 184
 185     p_demux->pf_demux = Demux;
 186     p_demux->pf_control = Control;
 187     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 188     p_sys->psz_header = NULL;
 189     p_sys->i_subtitle = 0;
 190     p_sys->i_subtitles= 0;
 191     p_sys->subtitle   = NULL;
 192
 193
 194     /* Get the FPS */
 195     f_fps = var_CreateGetFloat( p_demux, "sub-fps" );
 196     if( f_fps >= 1.0 )
 197     {
 198         p_sys->i_microsecperframe = (int64_t)( (float)1000000 / f_fps );
 199     }
 200     else
 201     {
 202         p_sys->i_microsecperframe = 0;
 203     }
 204
 205     f_fps = var_CreateGetFloat( p_demux, "sub-original-fps" );
 206     if( f_fps >= 1.0 )
 207     {
 208         p_sys->i_original_mspf = (int64_t)( (float)1000000 / f_fps );
 209     }
 210     else
 211     {
 212         p_sys->i_original_mspf = 0;
 213     }
 214
 215     /* Get or probe the type */
 216     p_sys->i_type = SUB_TYPE_UNKNOWN;
 217     psz_type = var_CreateGetString( p_demux, "sub-type" );
 218     if( *psz_type )
 219     {
 220         int i;
 221
 222         for( i = 0; ; i++ )
 223         {
 224             if( sub_read_subtitle_function[i].psz_type_name == NULL )
 225                 break;
 226
 227             if( !strcmp( sub_read_subtitle_function[i].psz_type_name,
 228                          psz_type ) )
 229             {
 230                 p_sys->i_type = sub_read_subtitle_function[i].i_type;
 231                 break;
 232             }
 233         }
 234     }
 235     free( psz_type );
 236
 237     /* Probe if unknown type */
 238     if( p_sys->i_type == SUB_TYPE_UNKNOWN )
 239     {
 240         int     i_try;
 241         char    *s = NULL;
 242
 243         msg_Dbg( p_demux, "autodetecting subtitle format" );
 244         for( i_try = 0; i_try < 256; i_try++ )
 245         {
 246             int i_dummy;
 247
 248             if( ( s = stream_ReadLine( p_demux->s ) ) == NULL )
 249                 break;
 250
 251             if( strcasestr( s, "<SAMI>" ) )
 252             {
 253                 p_sys->i_type = SUB_TYPE_SAMI;
 254                 break;
 255             }
 256             else if( sscanf( s, "{%d}{%d}", &i_dummy, &i_dummy ) == 2 ||
 257                      sscanf( s, "{%d}{}", &i_dummy ) == 1)
 258             {
 259                 p_sys->i_type = SUB_TYPE_MICRODVD;
 260                 break;
 261             }
 262             else if( sscanf( s,
 263                              "%d:%d:%d,%d --> %d:%d:%d,%d",
 264                              &i_dummy,&i_dummy,&i_dummy,&i_dummy,
 265                              &i_dummy,&i_dummy,&i_dummy,&i_dummy ) == 8 )
 266             {
 267                 p_sys->i_type = SUB_TYPE_SUBRIP;
 268                 break;
 269             }
 270             else if( sscanf( s,
 271                              "!: This is a Sub Station Alpha v%d.x script.",
 272                              &i_dummy ) == 1)
 273             {
 274                 if( i_dummy <= 1 )
 275                 {
 276                     p_sys->i_type = SUB_TYPE_SSA1;
 277                 }
 278                 else
 279                 {
 280                     p_sys->i_type = SUB_TYPE_SSA2_4; /* I hope this will work */
 281                 }
 282                 break;
 283             }
 284             else if( strcasestr( s, "This is a Sub Station Alpha v4 script" ) )
 285             {
 286                 p_sys->i_type = SUB_TYPE_SSA2_4; /* I hope this will work */
 287                 break;
 288             }
 289             else if( !strncasecmp( s, "Dialogue: Marked", 16  ) )
 290             {
 291                 p_sys->i_type = SUB_TYPE_SSA2_4; /* could be wrong */
 292                 break;
 293             }
 294             else if( strcasestr( s, "[INFORMATION]" ) )
 295             {
 296                 p_sys->i_type = SUB_TYPE_SUBVIEWER; /* I hope this will work */
 297                 break;
 298             }
 299             else if( sscanf( s, "%d:%d:%d:", &i_dummy, &i_dummy, &i_dummy ) == 3 ||
 300                      sscanf( s, "%d:%d:%d ", &i_dummy, &i_dummy, &i_dummy ) == 3 )
 301             {
 302                 p_sys->i_type = SUB_TYPE_VPLAYER;
 303                 break;
 304             }
 305
 306             free( s );
 307             s = NULL;
 308         }
 309
 310         if( s ) free( s );
 311
 312         /* It will nearly always work even for non seekable stream thanks the
 313          * caching system, and if it fails we loose just a few sub */
 314         if( stream_Seek( p_demux->s, 0 ) )
 315         {
 316             msg_Warn( p_demux, "failed to rewind" );
 317         }
 318     }
 319     if( p_sys->i_type == SUB_TYPE_UNKNOWN )
 320     {
 321         msg_Err( p_demux, "failed to recognize subtitle type" );
 322         return VLC_EGENERIC;
 323     }
 324
 325     for( i = 0; ; i++ )
 326     {
 327         if( sub_read_subtitle_function[i].i_type == p_sys->i_type )
 328         {
 329             msg_Dbg( p_demux, "detected %s format",
 330                      sub_read_subtitle_function[i].psz_name );
 331             pf_read = sub_read_subtitle_function[i].pf_read;
 332             break;
 333         }
 334     }
 335
 336     msg_Dbg( p_demux, "loading all subtitles..." );
 337
 338     /* Load the whole file */
 339     TextLoad( &p_sys->txt, p_demux->s );
 340
 341     /* Parse it */
 342     for( i_max = 0;; )
 343     {
 344         if( p_sys->i_subtitles >= i_max )
 345         {
 346             i_max += 500;
 347             if( !( p_sys->subtitle = realloc( p_sys->subtitle,
 348                                               sizeof(subtitle_t) * i_max ) ) )
 349             {
 350                 msg_Err( p_demux, "out of memory");
 351                 return VLC_ENOMEM;
 352             }
 353         }
 354
 355         if( pf_read( p_demux, &p_sys->subtitle[p_sys->i_subtitles] ) )
 356             break;
 357
 358         p_sys->i_subtitles++;
 359     }
 360     /* Unload */
 361     TextUnload( &p_sys->txt );
 362
 363     msg_Dbg(p_demux, "loaded %d subtitles", p_sys->i_subtitles );
 364
 365     /* Fix subtitle (order and time) *** */
 366     p_sys->i_subtitle = 0;
 367     p_sys->i_length = 0;
 368     if( p_sys->i_subtitles > 0 )
 369     {
 370         p_sys->i_length = p_sys->subtitle[p_sys->i_subtitles-1].i_stop;
 371         /* +1 to avoid 0 */
 372         if( p_sys->i_length <= 0 )
 373             p_sys->i_length = p_sys->subtitle[p_sys->i_subtitles-1].i_start+1;
 374     }
 375
 376     /* *** add subtitle ES *** */
 377     if( p_sys->i_type == SUB_TYPE_SSA1 ||
 378              p_sys->i_type == SUB_TYPE_SSA2_4 )
 379     {
 380         es_format_Init( &fmt, SPU_ES, VLC_FOURCC( 's','s','a',' ' ) );
 381     }
 382     else
 383     {
 384         es_format_Init( &fmt, SPU_ES, VLC_FOURCC( 's','u','b','t' ) );
 385     }
 386     if( p_sys->psz_header != NULL )
 387     {
 388         fmt.i_extra = strlen( p_sys->psz_header ) + 1;
 389         fmt.p_extra = strdup( p_sys->psz_header );
 390     }
 391     p_sys->es = es_out_Add( p_demux->out, &fmt );
 392
 393     return VLC_SUCCESS;
 394 }
 395
 396 /*****************************************************************************
 397  * Close: Close subtitle demux
 398  *****************************************************************************/
 399 static void Close( vlc_object_t *p_this )
 400 {
 401     demux_t *p_demux = (demux_t*)p_this;
 402     demux_sys_t *p_sys = p_demux->p_sys;
 403     int i;
 404
 405     for( i = 0; i < p_sys->i_subtitles; i++ )
 406     {
 407         if( p_sys->subtitle[i].psz_text )
 408             free( p_sys->subtitle[i].psz_text );
 409     }
 410     if( p_sys->subtitle )
 411         free( p_sys->subtitle );
 412
 413     free( p_sys );
 414 }
 415
 416 /*****************************************************************************
 417  * Control:
 418  *****************************************************************************/
 419 static int Control( demux_t *p_demux, int i_query, va_list args )
 420 {
 421     demux_sys_t *p_sys = p_demux->p_sys;
 422     int64_t *pi64, i64;
 423     double *pf, f;
 424
 425     switch( i_query )
 426     {
 427         case DEMUX_GET_LENGTH:
 428             pi64 = (int64_t*)va_arg( args, int64_t * );
 429             *pi64 = p_sys->i_length;
 430             return VLC_SUCCESS;
 431
 432         case DEMUX_GET_TIME:
 433             pi64 = (int64_t*)va_arg( args, int64_t * );
 434             if( p_sys->i_subtitle < p_sys->i_subtitles )
 435             {
 436                 *pi64 = p_sys->subtitle[p_sys->i_subtitle].i_start;
 437                 return VLC_SUCCESS;
 438             }
 439             return VLC_EGENERIC;
 440
 441         case DEMUX_SET_TIME:
 442             i64 = (int64_t)va_arg( args, int64_t );
 443             p_sys->i_subtitle = 0;
 444             while( p_sys->i_subtitle < p_sys->i_subtitles &&
 445                    p_sys->subtitle[p_sys->i_subtitle].i_start < i64 )
 446             {
 447                 p_sys->i_subtitle++;
 448             }
 449
 450             if( p_sys->i_subtitle >= p_sys->i_subtitles )
 451                 return VLC_EGENERIC;
 452             return VLC_SUCCESS;
 453
 454         case DEMUX_GET_POSITION:
 455             pf = (double*)va_arg( args, double * );
 456             if( p_sys->i_subtitle >= p_sys->i_subtitles )
 457             {
 458                 *pf = 1.0;
 459             }
 460             else if( p_sys->i_subtitles > 0 )
 461             {
 462                 *pf = (double)p_sys->subtitle[p_sys->i_subtitle].i_start /
 463                       (double)p_sys->i_length;
 464             }
 465             else
 466             {
 467                 *pf = 0.0;
 468             }
 469             return VLC_SUCCESS;
 470
 471         case DEMUX_SET_POSITION:
 472             f = (double)va_arg( args, double );
 473             i64 = f * p_sys->i_length;
 474
 475             p_sys->i_subtitle = 0;
 476             while( p_sys->i_subtitle < p_sys->i_subtitles &&
 477                    p_sys->subtitle[p_sys->i_subtitle].i_start < i64 )
 478             {
 479                 p_sys->i_subtitle++;
 480             }
 481             if( p_sys->i_subtitle >= p_sys->i_subtitles )
 482                 return VLC_EGENERIC;
 483             return VLC_SUCCESS;
 484
 485         case DEMUX_SET_NEXT_DEMUX_TIME:
 486             p_sys->i_next_demux_date = (int64_t)va_arg( args, int64_t );
 487             return VLC_SUCCESS;
 488
 489         case DEMUX_GET_FPS:
 490         case DEMUX_GET_META:
 491         case DEMUX_GET_TITLE_INFO:
 492             return VLC_EGENERIC;
 493
 494         default:
 495             msg_Err( p_demux, "unknown query in subtitle control" );
 496             return VLC_EGENERIC;
 497     }
 498 }
 499
 500 /*****************************************************************************
 501  * Demux: Send subtitle to decoder
 502  *****************************************************************************/
 503 static int Demux( demux_t *p_demux )
 504 {
 505     demux_sys_t *p_sys = p_demux->p_sys;
 506     int64_t i_maxdate;
 507
 508     if( p_sys->i_subtitle >= p_sys->i_subtitles )
 509         return 0;
 510
 511     i_maxdate = p_sys->i_next_demux_date - var_GetTime( p_demux->p_parent, "spu-delay" );;
 512     if( i_maxdate <= 0 && p_sys->i_subtitle < p_sys->i_subtitles )
 513     {
 514         /* Should not happen */
 515         i_maxdate = p_sys->subtitle[p_sys->i_subtitle].i_start + 1;
 516     }
 517
 518     while( p_sys->i_subtitle < p_sys->i_subtitles &&
 519            p_sys->subtitle[p_sys->i_subtitle].i_start < i_maxdate )
 520     {
 521         block_t *p_block;
 522         int i_len = strlen( p_sys->subtitle[p_sys->i_subtitle].psz_text ) + 1;
 523
 524         if( i_len <= 1 )
 525         {
 526             /* empty subtitle */
 527             p_sys->i_subtitle++;
 528             continue;
 529         }
 530
 531         if( ( p_block = block_New( p_demux, i_len ) ) == NULL )
 532         {
 533             p_sys->i_subtitle++;
 534             continue;
 535         }
 536
 537         if( p_sys->subtitle[p_sys->i_subtitle].i_start < 0 )
 538         {
 539             p_sys->i_subtitle++;
 540             continue;
 541         }
 542
 543         p_block->i_pts = p_sys->subtitle[p_sys->i_subtitle].i_start;
 544         p_block->i_dts = p_block->i_pts;
 545         if( p_sys->subtitle[p_sys->i_subtitle].i_stop > 0 )
 546         {
 547             p_block->i_length =
 548                 p_sys->subtitle[p_sys->i_subtitle].i_stop - p_block->i_pts;
 549         }
 550
 551         memcpy( p_block->p_buffer,
 552                 p_sys->subtitle[p_sys->i_subtitle].psz_text, i_len );
 553         if( p_block->i_pts > 0 )
 554         {
 555             es_out_Send( p_demux->out, p_sys->es, p_block );
 556         }
 557         else
 558         {
 559             block_Release( p_block );
 560         }
 561         p_sys->i_subtitle++;
 562     }
 563
 564     /* */
 565     p_sys->i_next_demux_date = 0;
 566
 567     return 1;
 568 }
 569
 570 /*****************************************************************************
 571  * Fix: fix time stamp and order of subtitle
 572  *****************************************************************************/
 573 static void Fix( demux_t *p_demux )
 574 {
 575     demux_sys_t *p_sys = p_demux->p_sys;
 576     vlc_bool_t b_done;
 577     int     i_index;
 578
 579     /* *** fix order (to be sure...) *** */
 580     /* We suppose that there are near in order and this durty bubble sort
 581      * wont take too much time
 582      */
 583     do
 584     {
 585         b_done = VLC_TRUE;
 586         for( i_index = 1; i_index < p_sys->i_subtitles; i_index++ )
 587         {
 588             if( p_sys->subtitle[i_index].i_start <
 589                     p_sys->subtitle[i_index - 1].i_start )
 590             {
 591                 subtitle_t sub_xch;
 592                 memcpy( &sub_xch,
 593                         p_sys->subtitle + i_index - 1,
 594                         sizeof( subtitle_t ) );
 595                 memcpy( p_sys->subtitle + i_index - 1,
 596                         p_sys->subtitle + i_index,
 597                         sizeof( subtitle_t ) );
 598                 memcpy( p_sys->subtitle + i_index,
 599                         &sub_xch,
 600                         sizeof( subtitle_t ) );
 601                 b_done = VLC_FALSE;
 602             }
 603         }
 604     } while( !b_done );
 605 }
 606
 607 static int TextLoad( text_t *txt, stream_t *s )
 608 {
 609     int   i_line_max;
 610
 611     /* init txt */
 612     i_line_max          = 500;
 613     txt->i_line_count   = 0;
 614     txt->i_line         = 0;
 615     txt->line           = calloc( i_line_max, sizeof( char * ) );
 616
 617     /* load the complete file */
 618     for( ;; )
 619     {
 620         char *psz = stream_ReadLine( s );
 621
 622         if( psz == NULL )
 623             break;
 624
 625         txt->line[txt->i_line_count++] = psz;
 626         if( txt->i_line_count >= i_line_max )
 627         {
 628             i_line_max += 100;
 629             txt->line = realloc( txt->line, i_line_max * sizeof( char*) );
 630         }
 631     }
 632
 633     if( txt->i_line_count <= 0 )
 634     {
 635         free( txt->line );
 636         return VLC_EGENERIC;
 637     }
 638
 639     return VLC_SUCCESS;
 640 }
 641 static void TextUnload( text_t *txt )
 642 {
 643     int i;
 644
 645     for( i = 0; i < txt->i_line_count; i++ )
 646     {
 647         free( txt->line[i] );
 648     }
 649     free( txt->line );
 650     txt->i_line       = 0;
 651     txt->i_line_count = 0;
 652 }
 653
 654 static char *TextGetLine( text_t *txt )
 655 {
 656     if( txt->i_line >= txt->i_line_count )
 657         return( NULL );
 658
 659     return txt->line[txt->i_line++];
 660 }
 661 static void TextPreviousLine( text_t *txt )
 662 {
 663     if( txt->i_line > 0 )
 664         txt->i_line--;
 665 }
 666
 667 /*****************************************************************************
 668  * Specific Subtitle function
 669  *****************************************************************************/
 670 #define MAX_LINE 8192
 671 static int ParseMicroDvd( demux_t *p_demux, subtitle_t *p_subtitle )
 672 {
 673     demux_sys_t *p_sys = p_demux->p_sys;
 674     text_t      *txt = &p_sys->txt;
 675     /*
 676      * each line:
 677      *  {n1}{n2}Line1|Line2|Line3....
 678      * where n1 and n2 are the video frame number...
 679      *
 680      */
 681     char *s;
 682
 683     char buffer_text[MAX_LINE + 1];
 684     int    i_start;
 685     int    i_stop;
 686     unsigned int i;
 687
 688     int i_microsecperframe = 40000; /* default to 25 fps */
 689     if( p_sys->i_microsecperframe > 0 )
 690         i_microsecperframe = p_sys->i_microsecperframe;
 691
 692     p_subtitle->i_start = 0;
 693     p_subtitle->i_stop  = 0;
 694     p_subtitle->psz_text = NULL;
 695
 696     for( ;; )
 697     {
 698         if( ( s = TextGetLine( txt ) ) == NULL )
 699         {
 700             return( VLC_EGENERIC );
 701         }
 702         i_start = 0;
 703         i_stop  = 0;
 704
 705         memset( buffer_text, '\0', MAX_LINE );
 706         if( sscanf( s, "{%d}{}%[^\r\n]", &i_start, buffer_text ) == 2 ||
 707             sscanf( s, "{%d}{%d}%[^\r\n]", &i_start, &i_stop, buffer_text ) == 3)
 708         {
 709             break;
 710         }
 711     }
 712     /* replace | by \n */
 713     for( i = 0; i < strlen( buffer_text ); i++ )
 714     {
 715         if( buffer_text[i] == '|' )
 716         {
 717             buffer_text[i] = '\n';
 718         }
 719     }
 720
 721     p_subtitle->i_start = (int64_t)i_start * i_microsecperframe;
 722     p_subtitle->i_stop  = (int64_t)i_stop  * i_microsecperframe;
 723     p_subtitle->psz_text = strndup( buffer_text, MAX_LINE );
 724     return( 0 );
 725 }
 726
 727 static int  ParseSubRip( demux_t *p_demux, subtitle_t *p_subtitle )
 728 {
 729     demux_sys_t *p_sys = p_demux->p_sys;
 730     text_t      *txt = &p_sys->txt;
 731
 732     /*
 733      * n
 734      * h1:m1:s1,d1 --> h2:m2:s2,d2
 735      * Line1
 736      * Line2
 737      * ...
 738      * [empty line]
 739      *
 740      */
 741     char *s;
 742     char buffer_text[ 10 * MAX_LINE];
 743     int  i_buffer_text;
 744     int64_t     i_start;
 745     int64_t     i_stop;
 746
 747     p_subtitle->i_start = 0;
 748     p_subtitle->i_stop  = 0;
 749     p_subtitle->psz_text = NULL;
 750
 751     for( ;; )
 752     {
 753         int h1, m1, s1, d1, h2, m2, s2, d2;
 754         if( ( s = TextGetLine( txt ) ) == NULL )
 755         {
 756             return( VLC_EGENERIC );
 757         }
 758         if( sscanf( s,
 759                     "%d:%d:%d,%d --> %d:%d:%d,%d",
 760                     &h1, &m1, &s1, &d1,
 761                     &h2, &m2, &s2, &d2 ) == 8 )
 762         {
 763             i_start = ( (int64_t)h1 * 3600*1000 +
 764                         (int64_t)m1 * 60*1000 +
 765                         (int64_t)s1 * 1000 +
 766                         (int64_t)d1 ) * 1000;
 767
 768             i_stop  = ( (int64_t)h2 * 3600*1000 +
 769                         (int64_t)m2 * 60*1000 +
 770                         (int64_t)s2 * 1000 +
 771                         (int64_t)d2 ) * 1000;
 772
 773             /* Now read text until an empty line */
 774             for( i_buffer_text = 0;; )
 775             {
 776                 int i_len;
 777                 if( ( s = TextGetLine( txt ) ) == NULL )
 778                 {
 779                     return( VLC_EGENERIC );
 780                 }
 781
 782                 i_len = strlen( s );
 783                 if( i_len <= 0 )
 784                 {
 785                     /* empty line -> end of this subtitle */
 786                     buffer_text[__MAX( i_buffer_text - 1, 0 )] = '\0';
 787                     p_subtitle->i_start = i_start;
 788                     p_subtitle->i_stop = i_stop;
 789                     p_subtitle->psz_text = strdup( buffer_text );
 790                     /* If framerate is available, use sub-fps */
 791                     if( p_sys->i_microsecperframe != 0 &&
 792                         p_sys->i_original_mspf != 0)
 793                     {
 794                         p_subtitle->i_start = (int64_t)i_start *
 795                                               p_sys->i_microsecperframe/
 796                                               p_sys->i_original_mspf;
 797                         p_subtitle->i_stop  = (int64_t)i_stop  *
 798                                               p_sys->i_microsecperframe /
 799                                               p_sys->i_original_mspf;
 800                     }
 801                     return 0;
 802                 }
 803                 else
 804                 {
 805                     if( i_buffer_text + i_len + 1 < 10 * MAX_LINE )
 806                     {
 807                         memcpy( buffer_text + i_buffer_text,
 808                                 s,
 809                                 i_len );
 810                         i_buffer_text += i_len;
 811
 812                         buffer_text[i_buffer_text] = '\n';
 813                         i_buffer_text++;
 814                     }
 815                 }
 816             }
 817         }
 818     }
 819 }
 820
 821 static int  ParseSubViewer( demux_t *p_demux, subtitle_t *p_subtitle )
 822 {
 823     demux_sys_t *p_sys = p_demux->p_sys;
 824     text_t      *txt = &p_sys->txt;
 825
 826     /*
 827      * h1:m1:s1.d1,h2:m2:s2.d2
 828      * Line1[br]Line2
 829      * Line3
 830      * ...
 831      * [empty line]
 832      * ( works with subviewer and subviewer v2 )
 833      */
 834     char *s;
 835     char buffer_text[ 10 * MAX_LINE];
 836     int  i_buffer_text;
 837     int64_t     i_start;
 838     int64_t     i_stop;
 839
 840     p_subtitle->i_start = 0;
 841     p_subtitle->i_stop  = 0;
 842     p_subtitle->psz_text = NULL;
 843
 844     for( ;; )
 845     {
 846         int h1, m1, s1, d1, h2, m2, s2, d2;
 847         if( ( s = TextGetLine( txt ) ) == NULL )
 848         {
 849             return( VLC_EGENERIC );
 850         }
 851         if( sscanf( s,
 852                     "%d:%d:%d.%d,%d:%d:%d.%d",
 853                     &h1, &m1, &s1, &d1,
 854                     &h2, &m2, &s2, &d2 ) == 8 )
 855         {
 856             i_start = ( (int64_t)h1 * 3600*1000 +
 857                         (int64_t)m1 * 60*1000 +
 858                         (int64_t)s1 * 1000 +
 859                         (int64_t)d1 ) * 1000;
 860
 861             i_stop  = ( (int64_t)h2 * 3600*1000 +
 862                         (int64_t)m2 * 60*1000 +
 863                         (int64_t)s2 * 1000 +
 864                         (int64_t)d2 ) * 1000;
 865
 866             /* Now read text until an empty line */
 867             for( i_buffer_text = 0;; )
 868             {
 869                 int i_len, i;
 870                 if( ( s = TextGetLine( txt ) ) == NULL )
 871                 {
 872                     return( VLC_EGENERIC );
 873                 }
 874
 875                 i_len = strlen( s );
 876                 if( i_len <= 0 )
 877                 {
 878                     /* empty line -> end of this subtitle */
 879                     buffer_text[__MAX( i_buffer_text - 1, 0 )] = '\0';
 880                     p_subtitle->i_start = i_start;
 881                     p_subtitle->i_stop = i_stop;
 882
 883                     /* replace [br] by \n */
 884                     for( i = 0; i < i_buffer_text - 3; i++ )
 885                     {
 886                         if( buffer_text[i] == '[' && buffer_text[i+1] == 'b' &&
 887                             buffer_text[i+2] == 'r' && buffer_text[i+3] == ']' )
 888                         {
 889                             char *temp = buffer_text + i + 1;
 890                             buffer_text[i] = '\n';
 891                             memmove( temp, temp+3, strlen( temp ) -3 );
 892                             temp[strlen( temp )-3] = '\0';
 893                         }
 894                     }
 895                     p_subtitle->psz_text = strdup( buffer_text );
 896                     return( 0 );
 897                 }
 898                 else
 899                 {
 900                     if( i_buffer_text + i_len + 1 < 10 * MAX_LINE )
 901                     {
 902                         memcpy( buffer_text + i_buffer_text,
 903                                 s,
 904                                 i_len );
 905                         i_buffer_text += i_len;
 906
 907                         buffer_text[i_buffer_text] = '\n';
 908                         i_buffer_text++;
 909                     }
 910                 }
 911             }
 912         }
 913     }
 914 }
 915
 916
 917 static int  ParseSSA( demux_t *p_demux, subtitle_t *p_subtitle )
 918 {
 919     demux_sys_t *p_sys = p_demux->p_sys;
 920     text_t      *txt = &p_sys->txt;
 921
 922     char buffer_text[ 10 * MAX_LINE];
 923     char *s;
 924     int64_t     i_start;
 925     int64_t     i_stop;
 926
 927     p_subtitle->i_start = 0;
 928     p_subtitle->i_stop  = 0;
 929     p_subtitle->psz_text = NULL;
 930
 931     for( ;; )
 932     {
 933         int h1, m1, s1, c1, h2, m2, s2, c2;
 934         int i_dummy;
 935
 936         if( ( s = TextGetLine( txt ) ) == NULL )
 937         {
 938             return( VLC_EGENERIC );
 939         }
 940         p_subtitle->psz_text = malloc( strlen( s ) );
 941
 942         if( sscanf( s,
 943                     "Dialogue: Marked=%d,%d:%d:%d.%d,%d:%d:%d.%d%[^\r\n]",
 944                     &i_dummy,
 945                     &h1, &m1, &s1, &c1,
 946                     &h2, &m2, &s2, &c2,
 947                     buffer_text ) == 10 )
 948         {
 949             i_start = ( (int64_t)h1 * 3600*1000 +
 950                         (int64_t)m1 * 60*1000 +
 951                         (int64_t)s1 * 1000 +
 952                         (int64_t)c1 * 10 ) * 1000;
 953
 954             i_stop  = ( (int64_t)h2 * 3600*1000 +
 955                         (int64_t)m2 * 60*1000 +
 956                         (int64_t)s2 * 1000 +
 957                         (int64_t)c2 * 10 ) * 1000;
 958
 959             /* The dec expects: ReadOrder, Layer, Style, Name, MarginL, MarginR, MarginV, Effect, Text */
 960             if( p_sys->i_type == SUB_TYPE_SSA1 )
 961             {
 962                 sprintf( p_subtitle->psz_text,
 963                          ",%d%s", i_dummy, strdup( buffer_text) );
 964             }
 965             else
 966             {
 967                 sprintf( p_subtitle->psz_text,
 968                          ",%d,%s", i_dummy, strdup( buffer_text) );
 969             }
 970             p_subtitle->i_start = i_start;
 971             p_subtitle->i_stop = i_stop;
 972             return 0;
 973         }
 974         else
 975         {
 976             /* All the other stuff we add to the header field */
 977             if( p_sys->psz_header != NULL )
 978             {
 979                 if( !( p_sys->psz_header = realloc( p_sys->psz_header,
 980                           strlen( p_sys->psz_header ) + strlen( s ) + 2 ) ) )
 981                 {
 982                     msg_Err( p_demux, "out of memory");
 983                     return VLC_ENOMEM;
 984                 }
 985                 p_sys->psz_header = strcat( p_sys->psz_header, strdup( s ) );
 986                 p_sys->psz_header = strcat( p_sys->psz_header, "\n" );
 987             }
 988             else
 989             {
 990                 if( !( p_sys->psz_header = malloc( strlen( s ) + 2 ) ) )
 991                 {
 992                     msg_Err( p_demux, "out of memory");
 993                     return VLC_ENOMEM;
 994                 }
 995                 p_sys->psz_header = strdup( s );
 996                 p_sys->psz_header = strcat( p_sys->psz_header, "\n" );
 997             }
 998         }
 999     }
1000 }
1001
1002 static int  ParseVplayer( demux_t *p_demux, subtitle_t *p_subtitle )
1003 {
1004     demux_sys_t *p_sys = p_demux->p_sys;
1005     text_t      *txt = &p_sys->txt;
1006
1007     /*
1008      * each line:
1009      *  h:m:s:Line1|Line2|Line3....
1010      *  or
1011      *  h:m:s Line1|Line2|Line3....
1012      *
1013      */
1014     char *p;
1015     char buffer_text[MAX_LINE + 1];
1016     int64_t    i_start;
1017     unsigned int i;
1018
1019     p_subtitle->i_start = 0;
1020     p_subtitle->i_stop  = 0;
1021     p_subtitle->psz_text = NULL;
1022
1023     for( ;; )
1024     {
1025         int h, m, s;
1026         char c;
1027
1028         if( ( p = TextGetLine( txt ) ) == NULL )
1029         {
1030             return( VLC_EGENERIC );
1031         }
1032
1033         i_start = 0;
1034
1035         memset( buffer_text, '\0', MAX_LINE );
1036         if( sscanf( p, "%d:%d:%d%[ :]%[^\r\n]", &h, &m, &s, &c, buffer_text ) == 5 )
1037         {
1038             i_start = ( (int64_t)h * 3600*1000 +
1039                         (int64_t)m * 60*1000 +
1040                         (int64_t)s * 1000 ) * 1000;
1041             break;
1042         }
1043     }
1044
1045     /* replace | by \n */
1046     for( i = 0; i < strlen( buffer_text ); i++ )
1047     {
1048         if( buffer_text[i] == '|' )
1049         {
1050             buffer_text[i] = '\n';
1051         }
1052     }
1053     p_subtitle->i_start = i_start;
1054
1055     p_subtitle->i_stop  = 0;
1056     p_subtitle->psz_text = strndup( buffer_text, MAX_LINE );
1057     return( 0 );
1058 }
1059
1060 static char *ParseSamiSearch( text_t *txt, char *psz_start, char *psz_str )
1061 {
1062     if( psz_start )
1063     {
1064         if( strcasestr( psz_start, psz_str ) )
1065         {
1066             char *s = strcasestr( psz_start, psz_str );
1067
1068             s += strlen( psz_str );
1069
1070             return( s );
1071         }
1072     }
1073     for( ;; )
1074     {
1075         char *p;
1076         if( ( p = TextGetLine( txt ) ) == NULL )
1077         {
1078             return NULL;
1079         }
1080         if( strcasestr( p, psz_str ) )
1081         {
1082             char *s = strcasestr( p, psz_str );
1083
1084             s += strlen( psz_str );
1085
1086             return(  s);
1087         }
1088     }
1089 }
1090
1091 static int  ParseSami( demux_t *p_demux, subtitle_t *p_subtitle )
1092 {
1093     demux_sys_t *p_sys = p_demux->p_sys;
1094     text_t      *txt = &p_sys->txt;
1095
1096     char *p;
1097     int64_t i_start;
1098
1099     int  i_text;
1100     char buffer_text[10*MAX_LINE + 1];
1101
1102     p_subtitle->i_start = 0;
1103     p_subtitle->i_stop  = 0;
1104     p_subtitle->psz_text = NULL;
1105
1106 #define ADDC( c ) \
1107     if( i_text < 10*MAX_LINE )      \
1108     {                               \
1109         buffer_text[i_text++] = c;  \
1110         buffer_text[i_text] = '\0'; \
1111     }
1112
1113     /* search "Start=" */
1114     if( !( p = ParseSamiSearch( txt, NULL, "Start=" ) ) )
1115     {
1116         return VLC_EGENERIC;
1117     }
1118
1119     /* get start value */
1120     i_start = strtol( p, &p, 0 );
1121
1122     /* search <P */
1123     if( !( p = ParseSamiSearch( txt, p, "<P" ) ) )
1124     {
1125         return VLC_EGENERIC;
1126     }
1127     /* search > */
1128     if( !( p = ParseSamiSearch( txt, p, ">" ) ) )
1129     {
1130         return VLC_EGENERIC;
1131     }
1132
1133     i_text = 0;
1134     buffer_text[0] = '\0';
1135     /* now get all txt until  a "Start=" line */
1136     for( ;; )
1137     {
1138         if( *p )
1139         {
1140             if( *p == '<' )
1141             {
1142                 if( !strncasecmp( p, "<br", 3 ) )
1143                 {
1144                     ADDC( '\n' );
1145                 }
1146                 else if( strcasestr( p, "Start=" ) )
1147                 {
1148                     TextPreviousLine( txt );
1149                     break;
1150                 }
1151                 p = ParseSamiSearch( txt, p, ">" );
1152             }
1153             else if( !strncmp( p, "&nbsp;", 6 ) )
1154             {
1155                 ADDC( ' ' );
1156                 p += 6;
1157             }
1158             else if( *p == '\t' )
1159             {
1160                 ADDC( ' ' );
1161                 p++;
1162             }
1163             else
1164             {
1165                 ADDC( *p );
1166                 p++;
1167             }
1168         }
1169         else
1170         {
1171             p = TextGetLine( txt );
1172         }
1173
1174         if( p == NULL )
1175         {
1176             break;
1177         }
1178     }
1179
1180     p_subtitle->i_start = i_start * 1000;
1181     p_subtitle->i_stop  = 0;
1182     p_subtitle->psz_text = strndup( buffer_text, 10*MAX_LINE );
1183
1184     return( VLC_SUCCESS );
1185 #undef ADDC
1186 }