1 /*****************************************************************************
2 * subsdec.c : text subtitles decoder
3 *****************************************************************************
4 * Copyright (C) 2000-2006 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@videolan.org>
8 * Samuel Hocevar <sam@zoy.org>
9 * Derk-Jan Hartman <hartman at videolan dot org>
10 * Bernie Purcell <bitmap@videolan.org>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
35 #include <vlc_plugin.h>
37 /*****************************************************************************
39 *****************************************************************************/
40 static int OpenDecoder ( vlc_object_t * );
41 static void CloseDecoder ( vlc_object_t * );
43 static subpicture_t *DecodeBlock ( decoder_t *, block_t ** );
44 static subpicture_t *ParseText ( decoder_t *, block_t * );
45 static char *StripTags ( char * );
46 static char *CreateHtmlSubtitle( int *pi_align, char * );
49 /*****************************************************************************
51 *****************************************************************************/
52 static const char *const ppsz_encodings[] = {
53 DEFAULT_NAME, "UTF-8", "",
54 "ISO-8859-1", "CP1252", "MacRoman", "MacIceland","ISO-8859-15", "",
55 "ISO-8859-2", "CP1250", "MacCentralEurope", "MacCroatian", "MacRomania", "",
56 "ISO-8859-5", "CP1251", "MacCyrillic", "MacUkraine", "KOI8-R", "KOI8-U", "KOI8-RU", "",
57 "ISO-8859-6", "CP1256", "MacArabic", "",
58 "ISO-8859-7", "CP1253", "MacGreek", "",
59 "ISO-8859-8", "CP1255", "MacHebrew", "",
60 "ISO-8859-9", "CP1254", "MacTurkish", "",
61 "ISO-8859-13", "CP1257", "",
62 "ISO-2022-JP", "ISO-2022-JP-1", "ISO-2022-JP-2", "EUC-JP", "SHIFT_JIS", "",
63 "ISO-2022-CN", "ISO-2022-CN-EXT", "EUC-CN", "EUC-TW", "BIG5", "BIG5-HKSCS", "",
64 "ISO-2022-KR", "EUC-KR", "",
65 "MacThai", "KOI8-T", "",
66 "ISO-8859-3", "ISO-8859-4", "ISO-8859-10", "ISO-8859-14", "ISO-8859-16", "",
67 "CP850", "CP862", "CP866", "CP874", "CP932", "CP949", "CP950", "CP1133", "CP1258", "",
69 "UTF-7", "UTF-16", "UTF-16BE", "UTF-16LE", "UTF-32", "UTF-32BE", "UTF-32LE",
70 "UCS-2", "UCS-2BE", "UCS-2LE", "UCS-4", "UCS-4BE", "UCS-4LE", "",
71 "GBK", "GB18030", "JOHAB", "ARMSCII-8",
72 "Georgian-Academy", "Georgian-PS", "TIS-620", "VISCII", "TCVN",
76 SSA supports charset selection.
77 The following known charsets are used:
79 0 = Ansi - Western European
84 128 = Japanese (Shift JIS)
87 134 = GB2312 Simplified Chinese
88 136 = Big5 Traditional Chinese
95 204 = Russian (Cyrillic)
97 238 = Eastern European
101 static const int pi_justification[] = { 0, 1, 2 };
102 static const char *const ppsz_justification_text[] = {
103 N_("Center"),N_("Left"),N_("Right")};
105 #define ENCODING_TEXT N_("Subtitles text encoding")
106 #define ENCODING_LONGTEXT N_("Set the encoding used in text subtitles")
107 #define ALIGN_TEXT N_("Subtitles justification")
108 #define ALIGN_LONGTEXT N_("Set the justification of subtitles")
109 #define AUTODETECT_UTF8_TEXT N_("UTF-8 subtitles autodetection")
110 #define AUTODETECT_UTF8_LONGTEXT N_("This enables automatic detection of " \
111 "UTF-8 encoding within subtitles files.")
112 #define FORMAT_TEXT N_("Formatted Subtitles")
113 #define FORMAT_LONGTEXT N_("Some subtitle formats allow for text formatting. " \
114 "VLC partly implements this, but you can choose to disable all formatting.")
118 set_shortname( N_("Subtitles"))
119 set_description( N_("Text subtitles decoder") )
120 set_capability( "decoder", 50 )
121 set_callbacks( OpenDecoder, CloseDecoder )
122 set_category( CAT_INPUT )
123 set_subcategory( SUBCAT_INPUT_SCODEC )
125 add_integer( "subsdec-align", 0, NULL, ALIGN_TEXT, ALIGN_LONGTEXT,
127 change_integer_list( pi_justification, ppsz_justification_text, NULL )
128 add_string( "subsdec-encoding", DEFAULT_NAME, NULL,
129 ENCODING_TEXT, ENCODING_LONGTEXT, false )
130 change_string_list( ppsz_encodings, 0, 0 )
131 add_bool( "subsdec-autodetect-utf8", true, NULL,
132 AUTODETECT_UTF8_TEXT, AUTODETECT_UTF8_LONGTEXT, false )
133 add_bool( "subsdec-formatted", true, NULL, FORMAT_TEXT, FORMAT_LONGTEXT,
137 /*****************************************************************************
138 * OpenDecoder: probe the decoder and return score
139 *****************************************************************************
140 * Tries to launch a decoder and return score so that the interface is able
142 *****************************************************************************/
143 static int OpenDecoder( vlc_object_t *p_this )
145 decoder_t *p_dec = (decoder_t*)p_this;
146 decoder_sys_t *p_sys;
149 switch( p_dec->fmt_in.i_codec )
151 case VLC_FOURCC('s','u','b','t'):
152 case VLC_FOURCC('s','s','a',' '):
153 case VLC_FOURCC('t','1','4','0'):
159 p_dec->pf_decode_sub = DecodeBlock;
160 p_dec->fmt_out.i_cat = SPU_ES;
161 p_dec->fmt_out.i_codec = 0;
163 /* Allocate the memory needed to store the decoder's structure */
164 p_dec->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) );
170 p_sys->iconv_handle = (vlc_iconv_t)-1;
171 p_sys->b_autodetect_utf8 = false;
172 p_sys->b_ass = false;
173 p_sys->i_original_height = -1;
174 p_sys->i_original_width = -1;
175 TAB_INIT( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
176 TAB_INIT( p_sys->i_images, p_sys->pp_images );
178 char *psz_charset = NULL;
180 /* First try demux-specified encoding */
181 if( p_dec->fmt_in.i_codec == VLC_FOURCC('t','1','4','0') )
182 psz_charset = strdup( "UTF-8" ); /* IUT T.140 is always using UTF-8 */
184 if( p_dec->fmt_in.subs.psz_encoding && *p_dec->fmt_in.subs.psz_encoding )
186 psz_charset = strdup (p_dec->fmt_in.subs.psz_encoding);
187 msg_Dbg (p_dec, "trying demuxer-specified character encoding: %s",
188 p_dec->fmt_in.subs.psz_encoding ?: "not specified");
191 /* Second, try configured encoding */
192 if (psz_charset == NULL)
194 psz_charset = var_CreateGetNonEmptyString (p_dec, "subsdec-encoding");
195 if ((psz_charset != NULL) && !strcasecmp (psz_charset, DEFAULT_NAME))
201 msg_Dbg (p_dec, "trying configured character encoding: %s",
202 psz_charset ?: "not specified");
205 /* Third, try "local" encoding with optional UTF-8 autodetection */
206 if (psz_charset == NULL)
208 psz_charset = strdup (GetFallbackEncoding ());
209 msg_Dbg (p_dec, "trying default character encoding: %s",
210 psz_charset ?: "not specified");
212 if (var_CreateGetBool (p_dec, "subsdec-autodetect-utf8"))
214 msg_Dbg (p_dec, "using automatic UTF-8 detection");
215 p_sys->b_autodetect_utf8 = true;
219 /* Forth, don't do character decoding, i.e. assume UTF-8 */
220 if (psz_charset == NULL)
222 psz_charset = strdup ("UTF-8");
223 msg_Dbg (p_dec, "using UTF-8 character encoding" );
226 if ((psz_charset != NULL)
227 && strcasecmp (psz_charset, "UTF-8")
228 && strcasecmp (psz_charset, "utf8"))
230 p_sys->iconv_handle = vlc_iconv_open ("UTF-8", psz_charset);
231 if (p_sys->iconv_handle == (vlc_iconv_t)(-1))
232 msg_Err (p_dec, "cannot convert from %s: %m", psz_charset);
236 var_Create( p_dec, "subsdec-align", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
237 var_Get( p_dec, "subsdec-align", &val );
238 p_sys->i_align = val.i_int;
240 if( p_dec->fmt_in.i_codec == VLC_FOURCC('s','s','a',' ')
241 && var_CreateGetBool( p_dec, "subsdec-formatted" ) )
243 if( p_dec->fmt_in.i_extra > 0 )
244 ParseSSAHeader( p_dec );
250 /****************************************************************************
251 * DecodeBlock: the whole thing
252 ****************************************************************************
253 * This function must be fed with complete subtitles units.
254 ****************************************************************************/
255 static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
260 if( !pp_block || *pp_block == NULL )
264 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
266 block_Release( p_block );
270 p_spu = ParseText( p_dec, p_block );
272 block_Release( p_block );
278 /*****************************************************************************
279 * CloseDecoder: clean up the decoder
280 *****************************************************************************/
281 static void CloseDecoder( vlc_object_t *p_this )
283 decoder_t *p_dec = (decoder_t *)p_this;
284 decoder_sys_t *p_sys = p_dec->p_sys;
286 if( p_sys->iconv_handle != (vlc_iconv_t)-1 )
287 vlc_iconv_close( p_sys->iconv_handle );
289 if( p_sys->pp_ssa_styles )
292 for( i = 0; i < p_sys->i_ssa_styles; i++ )
294 if( !p_sys->pp_ssa_styles[i] )
297 free( p_sys->pp_ssa_styles[i]->psz_stylename );
298 free( p_sys->pp_ssa_styles[i]->font_style.psz_fontname );
299 free( p_sys->pp_ssa_styles[i] );
301 TAB_CLEAN( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
303 if( p_sys->pp_images )
306 for( i = 0; i < p_sys->i_images; i++ )
308 if( !p_sys->pp_images[i] )
311 if( p_sys->pp_images[i]->p_pic )
312 picture_Release( p_sys->pp_images[i]->p_pic );
313 free( p_sys->pp_images[i]->psz_filename );
315 free( p_sys->pp_images[i] );
317 TAB_CLEAN( p_sys->i_images, p_sys->pp_images );
323 /*****************************************************************************
324 * ParseText: parse an text subtitle packet and send it to the video output
325 *****************************************************************************/
326 static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block )
328 decoder_sys_t *p_sys = p_dec->p_sys;
329 subpicture_t *p_spu = NULL;
330 char *psz_subtitle = NULL;
333 /* We cannot display a subpicture with no date */
334 if( p_block->i_pts == 0 )
336 msg_Warn( p_dec, "subtitle without a date" );
340 /* Check validity of packet data */
341 /* An "empty" line containing only \0 can be used to force
342 and ephemer picture from the screen */
343 if( p_block->i_buffer < 1 )
345 msg_Warn( p_dec, "no subtitle data" );
349 /* Should be resiliant against bad subtitles */
350 psz_subtitle = strndup( (const char *)p_block->p_buffer,
352 if( psz_subtitle == NULL )
355 if( p_sys->iconv_handle == (vlc_iconv_t)-1 )
357 if (EnsureUTF8( psz_subtitle ) == NULL)
359 msg_Err( p_dec, "failed to convert subtitle encoding.\n"
360 "Try manually setting a character-encoding "
361 "before you open the file." );
367 if( p_sys->b_autodetect_utf8 )
369 if( IsUTF8( psz_subtitle ) == NULL )
371 msg_Dbg( p_dec, "invalid UTF-8 sequence: "
372 "disabling UTF-8 subtitles autodetection" );
373 p_sys->b_autodetect_utf8 = false;
377 if( !p_sys->b_autodetect_utf8 )
379 size_t inbytes_left = strlen( psz_subtitle );
380 size_t outbytes_left = 6 * inbytes_left;
381 char *psz_new_subtitle = malloc( outbytes_left + 1 );
382 char *psz_convert_buffer_out = psz_new_subtitle;
383 const char *psz_convert_buffer_in = psz_subtitle;
385 size_t ret = vlc_iconv( p_sys->iconv_handle,
386 &psz_convert_buffer_in, &inbytes_left,
387 &psz_convert_buffer_out, &outbytes_left );
389 *psz_convert_buffer_out++ = '\0';
390 free( psz_subtitle );
392 if( ( ret == (size_t)(-1) ) || inbytes_left )
394 free( psz_new_subtitle );
395 msg_Err( p_dec, "failed to convert subtitle encoding.\n"
396 "Try manually setting a character-encoding "
397 "before you open the file." );
401 psz_subtitle = realloc( psz_new_subtitle,
402 psz_convert_buffer_out - psz_new_subtitle );
406 /* Create the subpicture unit */
407 p_spu = decoder_NewSubpicture( p_dec );
410 msg_Warn( p_dec, "can't get spu buffer" );
411 free( psz_subtitle );
415 /* Create a new subpicture region */
416 memset( &fmt, 0, sizeof(video_format_t) );
417 fmt.i_chroma = VLC_FOURCC('T','E','X','T');
419 fmt.i_width = fmt.i_height = 0;
420 fmt.i_x_offset = fmt.i_y_offset = 0;
421 p_spu->p_region = subpicture_region_New( &fmt );
422 if( !p_spu->p_region )
424 msg_Err( p_dec, "cannot allocate SPU region" );
425 free( psz_subtitle );
426 decoder_DeleteSubpicture( p_dec, p_spu );
430 /* Decode and format the subpicture unit */
431 if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','s','a',' ') )
433 /* Normal text subs, easy markup */
434 p_spu->p_region->i_align = SUBPICTURE_ALIGN_BOTTOM | p_sys->i_align;
435 p_spu->p_region->i_x = p_sys->i_align ? 20 : 0;
436 p_spu->p_region->i_y = 10;
438 /* Remove formatting from string */
440 p_spu->p_region->psz_text = StripTags( psz_subtitle );
441 if( var_CreateGetBool( p_dec, "subsdec-formatted" ) )
443 p_spu->p_region->psz_html = CreateHtmlSubtitle( &p_spu->p_region->i_align, psz_subtitle );
446 p_spu->i_start = p_block->i_pts;
447 p_spu->i_stop = p_block->i_pts + p_block->i_length;
448 p_spu->b_ephemer = (p_block->i_length == 0);
449 p_spu->b_absolute = false;
453 /* Decode SSA/USF strings */
454 ParseSSAString( p_dec, psz_subtitle, p_spu );
456 p_spu->i_start = p_block->i_pts;
457 p_spu->i_stop = p_block->i_pts + p_block->i_length;
458 p_spu->b_ephemer = (p_block->i_length == 0);
459 p_spu->b_absolute = false;
460 p_spu->i_original_picture_width = p_sys->i_original_width;
461 p_spu->i_original_picture_height = p_sys->i_original_height;
463 free( psz_subtitle );
468 char* GotoNextLine( char *psz_text )
470 char *p_newline = psz_text;
472 while( p_newline[0] != '\0' )
474 if( p_newline[0] == '\n' || p_newline[0] == '\r' )
477 while( p_newline[0] == '\n' || p_newline[0] == '\r' )
486 /* Function now handles tags with attribute values, and tries
487 * to deal with &' commands too. It no longer modifies the string
488 * in place, so that the original text can be reused
490 static char *StripTags( char *psz_subtitle )
492 char *psz_text_start;
495 psz_text = psz_text_start = malloc( strlen( psz_subtitle ) + 1 );
496 if( !psz_text_start )
499 while( *psz_subtitle )
501 if( *psz_subtitle == '<' )
503 if( strncasecmp( psz_subtitle, "<br/>", 5 ) == 0 )
506 psz_subtitle += strcspn( psz_subtitle, ">" );
508 else if( *psz_subtitle == '&' )
510 if( !strncasecmp( psz_subtitle, "<", 4 ))
513 psz_subtitle += strcspn( psz_subtitle, ";" );
515 else if( !strncasecmp( psz_subtitle, ">", 4 ))
518 psz_subtitle += strcspn( psz_subtitle, ";" );
520 else if( !strncasecmp( psz_subtitle, "&", 5 ))
523 psz_subtitle += strcspn( psz_subtitle, ";" );
525 else if( !strncasecmp( psz_subtitle, """, 6 ))
528 psz_subtitle += strcspn( psz_subtitle, ";" );
532 /* Assume it is just a normal ampersand */
538 *psz_text++ = *psz_subtitle;
544 psz_text_start = realloc( psz_text_start, strlen( psz_text_start ) + 1 );
546 return psz_text_start;
549 /* Try to respect any style tags present in the subtitle string. The main
550 * problem here is a lack of adequate specs for the subtitle formats.
551 * SSA/ASS and USF are both detail spec'ed -- but they are handled elsewhere.
552 * SAMI has a detailed spec, but extensive rework is needed in the demux
553 * code to prevent all this style information being excised, as it presently
555 * That leaves the others - none of which were (I guess) originally intended
556 * to be carrying style information. Over time people have used them that way.
557 * In the absence of specifications from which to work, the tags supported
558 * have been restricted to the simple set permitted by the USF DTD, ie. :
559 * Basic: <br>, <i>, <b>, <u>
571 * There is also the further restriction that the subtitle be well-formed
572 * as an XML entity, ie. the HTML sentence:
573 * <b><i>Bold and Italics</b></i>
574 * doesn't qualify because the tags aren't nested one inside the other.
575 * <text> tags are automatically added to the output to ensure
577 * If the text doesn't qualify for any reason, a NULL string is
578 * returned, and the rendering engine will fall back to the
579 * plain text version of the subtitle.
581 static void HtmlNPut( char **ppsz_html, const char *psz_text, int i_max )
583 const int i_len = strlen(psz_text);
585 strncpy( *ppsz_html, psz_text, i_max );
586 *ppsz_html += __MIN(i_max,i_len);
589 static void HtmlPut( char **ppsz_html, const char *psz_text )
591 strcpy( *ppsz_html, psz_text );
592 *ppsz_html += strlen(psz_text);
594 static void HtmlCopy( char **ppsz_html, char **ppsz_subtitle, const char *psz_text )
596 HtmlPut( ppsz_html, psz_text );
597 *ppsz_subtitle += strlen(psz_text);
600 static char *CreateHtmlSubtitle( int *pi_align, char *psz_subtitle )
603 char *psz_tag = malloc( ( strlen( psz_subtitle ) / 3 ) + 1 );
609 size_t i_buf_size = strlen( psz_subtitle ) + 100;
610 char *psz_html_start = malloc( i_buf_size );
611 char *psz_html = psz_html_start;
612 if( psz_html_start == NULL )
619 bool b_has_align = false;
621 HtmlPut( &psz_html, "<text>" );
624 while( *psz_subtitle )
626 if( *psz_subtitle == '\n' )
628 HtmlPut( &psz_html, "<br/>" );
631 else if( *psz_subtitle == '<' )
633 if( !strncasecmp( psz_subtitle, "<br/>", 5 ))
635 HtmlCopy( &psz_html, &psz_subtitle, "<br/>" );
637 else if( !strncasecmp( psz_subtitle, "<b>", 3 ) )
639 HtmlCopy( &psz_html, &psz_subtitle, "<b>" );
640 strcat( psz_tag, "b" );
642 else if( !strncasecmp( psz_subtitle, "<i>", 3 ) )
644 HtmlCopy( &psz_html, &psz_subtitle, "<i>" );
645 strcat( psz_tag, "i" );
647 else if( !strncasecmp( psz_subtitle, "<u>", 3 ) )
649 HtmlCopy( &psz_html, &psz_subtitle, "<u>" );
650 strcat( psz_tag, "u" );
652 else if( !strncasecmp( psz_subtitle, "<font ", 6 ))
654 const char *psz_attribs[] = { "face=", "family=", "size=",
655 "color=", "outline-color=", "shadow-color=",
656 "outline-level=", "shadow-level=", "back-color=",
659 HtmlCopy( &psz_html, &psz_subtitle, "<font " );
660 strcat( psz_tag, "f" );
662 while( *psz_subtitle != '>' )
666 for( k=0; psz_attribs[ k ]; k++ )
668 int i_len = strlen( psz_attribs[ k ] );
670 if( !strncasecmp( psz_subtitle, psz_attribs[k], i_len ) )
673 HtmlPut( &psz_html, psz_attribs[k] );
674 psz_subtitle += i_len;
677 if( *psz_subtitle == '"' )
680 i_len = strcspn( psz_subtitle, "\"" );
684 i_len = strcspn( psz_subtitle, " \t>" );
686 HtmlPut( &psz_html, "\"" );
687 if( !strcmp( psz_attribs[ k ], "color=" ) && *psz_subtitle >= '0' && *psz_subtitle <= '9' )
688 HtmlPut( &psz_html, "#" );
689 HtmlNPut( &psz_html, psz_subtitle, i_len );
690 HtmlPut( &psz_html, "\"" );
692 psz_subtitle += i_len;
693 if( *psz_subtitle == '\"' )
698 if( psz_attribs[ k ] == NULL )
700 /* Jump over unrecognised tag */
701 int i_len = strcspn( psz_subtitle, "\"" ) + 1;
703 i_len += strcspn( psz_subtitle + i_len, "\"" ) + 1;
704 psz_subtitle += i_len;
706 while (*psz_subtitle == ' ')
707 *psz_html++ = *psz_subtitle++;
709 *psz_html++ = *psz_subtitle++;
711 else if( !strncmp( psz_subtitle, "</", 2 ))
713 bool b_match = false;
714 bool b_ignore = false;
715 int i_len = strlen( psz_tag ) - 1;
716 char *psz_lastTag = NULL;
720 psz_lastTag = psz_tag + i_len;
723 switch( *psz_lastTag )
726 b_match = !strncasecmp( psz_subtitle, "</b>", 4 );
730 b_match = !strncasecmp( psz_subtitle, "</i>", 4 );
734 b_match = !strncasecmp( psz_subtitle, "</u>", 4 );
738 b_match = !strncasecmp( psz_subtitle, "</font>", 7 );
742 i_len = strcspn( psz_subtitle, ">" );
743 b_match = psz_subtitle[i_len] == '>';
752 /* Not well formed -- kill everything */
753 free( psz_html_start );
754 psz_html_start = NULL;
759 HtmlNPut( &psz_html, psz_subtitle, i_len );
761 psz_subtitle += i_len;
763 else if( ( psz_subtitle[1] < 'a' || psz_subtitle[1] > 'z' ) &&
764 ( psz_subtitle[1] < 'A' || psz_subtitle[1] > 'Z' ) )
766 /* We have a single < */
767 HtmlPut( &psz_html, "<" );
772 /* We have an unknown tag or a single < */
774 /* Search for the next tag or end of tag or end of string */
775 char *psz_stop = psz_subtitle + 1 + strcspn( &psz_subtitle[1], "<>" );
776 char *psz_closing = strstr( psz_subtitle, "/>" );
778 if( psz_closing && psz_closing < psz_stop )
780 /* We have a self closed tag, remove it */
781 psz_subtitle = &psz_closing[2];
783 else if( *psz_stop == '>' )
787 snprintf( psz_match, sizeof(psz_match), "</%s", &psz_subtitle[1] );
788 psz_match[strcspn( psz_match, " \t>" )] = '\0';
790 if( strstr( psz_subtitle, psz_match ) )
792 /* We have the closing tag, ignore it TODO */
793 psz_subtitle = &psz_stop[1];
794 strcat( psz_tag, "I" );
798 int i_len = psz_stop + 1 - psz_subtitle;
800 /* Copy the whole data */
801 for( ; i_len > 0; i_len--, psz_subtitle++ )
803 if( *psz_subtitle == '<' )
804 HtmlPut( &psz_html, "<" );
805 else if( *psz_subtitle == '>' )
806 HtmlPut( &psz_html, ">" );
808 *psz_html++ = *psz_subtitle;
814 /* We have a single < */
815 HtmlPut( &psz_html, "<" );
820 else if( *psz_subtitle == '&' )
822 if( !strncasecmp( psz_subtitle, "<", 4 ))
824 HtmlCopy( &psz_html, &psz_subtitle, "<" );
826 else if( !strncasecmp( psz_subtitle, ">", 4 ))
828 HtmlCopy( &psz_html, &psz_subtitle, ">" );
830 else if( !strncasecmp( psz_subtitle, "&", 5 ))
832 HtmlCopy( &psz_html, &psz_subtitle, "&" );
836 HtmlPut( &psz_html, "&" );
840 else if( *psz_subtitle == '>' )
842 HtmlPut( &psz_html, ">" );
845 else if( psz_subtitle[0] == '{' && psz_subtitle[1] == '\\' &&
846 strchr( psz_subtitle, '}' ) )
848 /* Check for forced alignment */
850 !strncmp( psz_subtitle, "{\\an", 4 ) && psz_subtitle[4] >= '1' && psz_subtitle[4] <= '9' && psz_subtitle[5] == '}' )
852 static const int pi_vertical[3] = { SUBPICTURE_ALIGN_BOTTOM, 0, SUBPICTURE_ALIGN_TOP };
853 static const int pi_horizontal[3] = { SUBPICTURE_ALIGN_LEFT, 0, SUBPICTURE_ALIGN_RIGHT };
854 const int i_id = psz_subtitle[4] - '1';
857 *pi_align = pi_vertical[i_id/3] | pi_horizontal[i_id%3];
859 /* TODO fr -> rotation */
861 /* Hide {\stupidity} */
862 psz_subtitle = strchr( psz_subtitle, '}' ) + 1;
866 *psz_html = *psz_subtitle;
867 if( psz_html > psz_html_start )
869 /* Check for double whitespace */
870 if( ( *psz_html == ' ' || *psz_html == '\t' ) &&
871 ( *(psz_html-1) == ' ' || *(psz_html-1) == '\t' ) )
873 HtmlPut( &psz_html, NO_BREAKING_SPACE );
881 if( ( size_t )( psz_html - psz_html_start ) > i_buf_size - 50 )
883 const int i_len = psz_html - psz_html_start;
886 char *psz_new = realloc( psz_html_start, i_buf_size );
889 psz_html_start = psz_new;
890 psz_html = &psz_new[i_len];
895 static const char *psz_text_close = "</text>";
896 static const char *psz_tag_long = "/font>";
898 /* Realloc for closing tags and shrink memory */
899 const size_t i_length = (size_t)( psz_html - psz_html_start );
901 const size_t i_size = i_length + strlen(psz_tag_long) * strlen(psz_tag) + strlen(psz_text_close) + 1;
902 char *psz_new = realloc( psz_html_start, i_size );
905 psz_html_start = psz_new;
906 psz_html = &psz_new[i_length];
908 /* Close not well formed subtitle */
912 char *psz_last = &psz_tag[strlen(psz_tag)-1];
916 HtmlPut( &psz_html, "</b>" );
919 HtmlPut( &psz_html, "</i>" );
922 HtmlPut( &psz_html, "</u>" );
925 HtmlPut( &psz_html, "/font>" );
933 HtmlPut( &psz_html, psz_text_close );
938 return psz_html_start;