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