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 *****************************************************************************/
37 #include <vlc_plugin.h>
39 /*****************************************************************************
41 *****************************************************************************/
42 static int OpenDecoder ( vlc_object_t * );
43 static void CloseDecoder ( vlc_object_t * );
45 static subpicture_t *DecodeBlock ( decoder_t *, block_t ** );
46 static subpicture_t *ParseText ( decoder_t *, block_t * );
47 static char *StripTags ( char * );
48 static char *CreateHtmlSubtitle( int *pi_align, char * );
51 /*****************************************************************************
53 *****************************************************************************/
54 static const char *const ppsz_encodings[] = {
98 static const char *const ppsz_encoding_names[] = {
100 N_("Universal (UTF-8)"),
101 N_("Universal (UTF-16)"),
102 N_("Universal (big endian UTF-16)"),
103 N_("Universal (little endian UTF-16)"),
104 N_("Universal, Chinese (GB18030)"),
106 /* ISO 8859 and the likes */
108 N_("Western European (Latin-9)"), /* mostly superset of Latin-1 */
109 N_("Western European (Windows-1252)"),
111 N_("Eastern European (Latin-2)"),
112 N_("Eastern European (Windows-1250)"),
114 N_("Esperanto (Latin-3)"),
116 N_("Nordic (Latin-6)"), /* Latin 6 supersedes Latin 4 */
118 N_("Cyrillic (Windows-1251)"), /* ISO 8859-5 is not practically used */
119 N_("Russian (KOI8-R)"),
120 N_("Ukrainian (KOI8-U)"),
122 N_("Arabic (ISO 8859-6)"),
123 N_("Arabic (Windows-1256)"),
125 N_("Greek (ISO 8859-7)"),
126 N_("Greek (Windows-1253)"),
128 N_("Hebrew (ISO 8859-8)"),
129 N_("Hebrew (Windows-1255)"),
131 N_("Turkish (ISO 8859-9)"),
132 N_("Turkish (Windows-1254)"),
135 N_("Thai (TIS 620-2533/ISO 8859-11)"),
136 N_("Thai (Windows-874)"),
138 N_("Baltic (Latin-7)"),
139 N_("Baltic (Windows-1257)"),
140 /* 12 -> /dev/null */
142 N_("Celtic (Latin-8)"),
145 N_("South-Eastern European (Latin-10)"),
147 N_("Simplified Chinese (ISO-2022-CN-EXT)"),
148 N_("Simplified Chinese Unix (EUC-CN)"),
149 N_("Japanese (7-bits JIS/ISO-2022-JP-2)"),
150 N_("Japanese Unix (EUC-JP)"),
151 N_("Japanese (Shift JIS)"),
152 N_("Korean (EUC-KR/CP949)"),
153 N_("Korean (ISO-2022-KR)"),
154 N_("Traditional Chinese (Big5)"),
155 N_("Traditional Chinese Unix (EUC-TW)"),
156 N_("Hong-Kong Supplementary (HKSCS)"),
158 N_("Vietnamese (VISCII)"),
159 N_("Vietnamese (Windows-1258)"),
162 SSA supports charset selection.
163 The following known charsets are used:
165 0 = Ansi - Western European
170 128 = Japanese (Shift JIS)
173 134 = GB2312 Simplified Chinese
174 136 = Big5 Traditional Chinese
181 204 = Russian (Cyrillic)
183 238 = Eastern European
187 static const int pi_justification[] = { 0, 1, 2 };
188 static const char *const ppsz_justification_text[] = {
189 N_("Center"),N_("Left"),N_("Right")};
191 #define ENCODING_TEXT N_("Subtitles text encoding")
192 #define ENCODING_LONGTEXT N_("Set the encoding used in text subtitles")
193 #define ALIGN_TEXT N_("Subtitles justification")
194 #define ALIGN_LONGTEXT N_("Set the justification of subtitles")
195 #define AUTODETECT_UTF8_TEXT N_("UTF-8 subtitles autodetection")
196 #define AUTODETECT_UTF8_LONGTEXT N_("This enables automatic detection of " \
197 "UTF-8 encoding within subtitles files.")
198 #define FORMAT_TEXT N_("Formatted Subtitles")
199 #define FORMAT_LONGTEXT N_("Some subtitle formats allow for text formatting. " \
200 "VLC partly implements this, but you can choose to disable all formatting.")
204 set_shortname( N_("Subtitles"))
205 set_description( N_("Text subtitles decoder") )
206 set_capability( "decoder", 50 )
207 set_callbacks( OpenDecoder, CloseDecoder )
208 set_category( CAT_INPUT )
209 set_subcategory( SUBCAT_INPUT_SCODEC )
211 add_integer( "subsdec-align", 0, NULL, ALIGN_TEXT, ALIGN_LONGTEXT,
213 change_integer_list( pi_justification, ppsz_justification_text, NULL )
214 add_string( "subsdec-encoding", "", NULL,
215 ENCODING_TEXT, ENCODING_LONGTEXT, false )
216 change_string_list( ppsz_encodings, ppsz_encoding_names, 0 )
217 add_bool( "subsdec-autodetect-utf8", true, NULL,
218 AUTODETECT_UTF8_TEXT, AUTODETECT_UTF8_LONGTEXT, false )
219 add_bool( "subsdec-formatted", true, NULL, FORMAT_TEXT, FORMAT_LONGTEXT,
223 /*****************************************************************************
224 * OpenDecoder: probe the decoder and return score
225 *****************************************************************************
226 * Tries to launch a decoder and return score so that the interface is able
228 *****************************************************************************/
229 static int OpenDecoder( vlc_object_t *p_this )
231 decoder_t *p_dec = (decoder_t*)p_this;
232 decoder_sys_t *p_sys;
234 switch( p_dec->fmt_in.i_codec )
238 case VLC_CODEC_ITU_T140:
244 p_dec->pf_decode_sub = DecodeBlock;
245 p_dec->fmt_out.i_cat = SPU_ES;
246 p_dec->fmt_out.i_codec = 0;
248 /* Allocate the memory needed to store the decoder's structure */
249 p_dec->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) );
255 p_sys->iconv_handle = (vlc_iconv_t)-1;
256 p_sys->b_autodetect_utf8 = false;
257 p_sys->b_ass = false;
258 p_sys->i_original_height = -1;
259 p_sys->i_original_width = -1;
260 TAB_INIT( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
261 TAB_INIT( p_sys->i_images, p_sys->pp_images );
263 char *psz_charset = NULL;
265 /* First try demux-specified encoding */
266 if( p_dec->fmt_in.i_codec == VLC_CODEC_ITU_T140 )
267 psz_charset = strdup( "UTF-8" ); /* IUT T.140 is always using UTF-8 */
269 if( p_dec->fmt_in.subs.psz_encoding && *p_dec->fmt_in.subs.psz_encoding )
271 psz_charset = strdup (p_dec->fmt_in.subs.psz_encoding);
272 msg_Dbg (p_dec, "trying demuxer-specified character encoding: %s",
273 p_dec->fmt_in.subs.psz_encoding ?
274 p_dec->fmt_in.subs.psz_encoding : "not specified");
277 /* Second, try configured encoding */
278 if (psz_charset == NULL)
280 psz_charset = var_CreateGetNonEmptyString (p_dec, "subsdec-encoding");
281 msg_Dbg (p_dec, "trying configured character encoding: %s",
282 psz_charset ? psz_charset : "not specified");
285 /* Third, try "local" encoding with optional UTF-8 autodetection */
286 if (psz_charset == NULL)
288 psz_charset = strdup (GetFallbackEncoding ());
289 msg_Dbg (p_dec, "trying default character encoding: %s",
290 psz_charset ? psz_charset : "not specified");
292 if (var_CreateGetBool (p_dec, "subsdec-autodetect-utf8"))
294 msg_Dbg (p_dec, "using automatic UTF-8 detection");
295 p_sys->b_autodetect_utf8 = true;
299 /* Forth, don't do character decoding, i.e. assume UTF-8 */
300 if (psz_charset == NULL)
302 psz_charset = strdup ("UTF-8");
303 msg_Dbg (p_dec, "using UTF-8 character encoding" );
306 if ((psz_charset != NULL)
307 && strcasecmp (psz_charset, "UTF-8")
308 && strcasecmp (psz_charset, "utf8"))
310 p_sys->iconv_handle = vlc_iconv_open ("UTF-8", psz_charset);
311 if (p_sys->iconv_handle == (vlc_iconv_t)(-1))
312 msg_Err (p_dec, "cannot convert from %s: %m", psz_charset);
316 p_sys->i_align = var_CreateGetInteger( p_dec, "subsdec-align" );
318 if( p_dec->fmt_in.i_codec == VLC_CODEC_SSA
319 && var_CreateGetBool( p_dec, "subsdec-formatted" ) )
321 if( p_dec->fmt_in.i_extra > 0 )
322 ParseSSAHeader( p_dec );
328 /****************************************************************************
329 * DecodeBlock: the whole thing
330 ****************************************************************************
331 * This function must be fed with complete subtitles units.
332 ****************************************************************************/
333 static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
338 if( !pp_block || *pp_block == NULL )
342 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
344 block_Release( p_block );
348 p_spu = ParseText( p_dec, p_block );
350 block_Release( p_block );
356 /*****************************************************************************
357 * CloseDecoder: clean up the decoder
358 *****************************************************************************/
359 static void CloseDecoder( vlc_object_t *p_this )
361 decoder_t *p_dec = (decoder_t *)p_this;
362 decoder_sys_t *p_sys = p_dec->p_sys;
364 if( p_sys->iconv_handle != (vlc_iconv_t)-1 )
365 vlc_iconv_close( p_sys->iconv_handle );
367 if( p_sys->pp_ssa_styles )
370 for( i = 0; i < p_sys->i_ssa_styles; i++ )
372 if( !p_sys->pp_ssa_styles[i] )
375 free( p_sys->pp_ssa_styles[i]->psz_stylename );
376 free( p_sys->pp_ssa_styles[i]->font_style.psz_fontname );
377 free( p_sys->pp_ssa_styles[i] );
379 TAB_CLEAN( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
381 if( p_sys->pp_images )
384 for( i = 0; i < p_sys->i_images; i++ )
386 if( !p_sys->pp_images[i] )
389 if( p_sys->pp_images[i]->p_pic )
390 picture_Release( p_sys->pp_images[i]->p_pic );
391 free( p_sys->pp_images[i]->psz_filename );
393 free( p_sys->pp_images[i] );
395 TAB_CLEAN( p_sys->i_images, p_sys->pp_images );
401 /*****************************************************************************
402 * ParseText: parse an text subtitle packet and send it to the video output
403 *****************************************************************************/
404 static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block )
406 decoder_sys_t *p_sys = p_dec->p_sys;
407 subpicture_t *p_spu = NULL;
408 char *psz_subtitle = NULL;
411 /* We cannot display a subpicture with no date */
412 if( p_block->i_pts == 0 )
414 msg_Warn( p_dec, "subtitle without a date" );
418 /* Check validity of packet data */
419 /* An "empty" line containing only \0 can be used to force
420 and ephemer picture from the screen */
421 if( p_block->i_buffer < 1 )
423 msg_Warn( p_dec, "no subtitle data" );
427 /* Should be resiliant against bad subtitles */
428 psz_subtitle = strndup( (const char *)p_block->p_buffer,
430 if( psz_subtitle == NULL )
433 if( p_sys->iconv_handle == (vlc_iconv_t)-1 )
435 if (EnsureUTF8( psz_subtitle ) == NULL)
437 msg_Err( p_dec, "failed to convert subtitle encoding.\n"
438 "Try manually setting a character-encoding "
439 "before you open the file." );
445 if( p_sys->b_autodetect_utf8 )
447 if( IsUTF8( psz_subtitle ) == NULL )
449 msg_Dbg( p_dec, "invalid UTF-8 sequence: "
450 "disabling UTF-8 subtitles autodetection" );
451 p_sys->b_autodetect_utf8 = false;
455 if( !p_sys->b_autodetect_utf8 )
457 size_t inbytes_left = strlen( psz_subtitle );
458 size_t outbytes_left = 6 * inbytes_left;
459 char *psz_new_subtitle = malloc( outbytes_left + 1 );
460 char *psz_convert_buffer_out = psz_new_subtitle;
461 const char *psz_convert_buffer_in = psz_subtitle;
463 assert( psz_new_subtitle );
465 size_t ret = vlc_iconv( p_sys->iconv_handle,
466 &psz_convert_buffer_in, &inbytes_left,
467 &psz_convert_buffer_out, &outbytes_left );
469 *psz_convert_buffer_out++ = '\0';
470 free( psz_subtitle );
472 if( ( ret == (size_t)(-1) ) || inbytes_left )
474 free( psz_new_subtitle );
475 msg_Err( p_dec, "failed to convert subtitle encoding.\n"
476 "Try manually setting a character-encoding "
477 "before you open the file." );
481 psz_subtitle = realloc( psz_new_subtitle,
482 psz_convert_buffer_out - psz_new_subtitle );
484 psz_subtitle = psz_new_subtitle;
488 /* Create the subpicture unit */
489 p_spu = decoder_NewSubpicture( p_dec );
492 msg_Warn( p_dec, "can't get spu buffer" );
493 free( psz_subtitle );
497 /* Create a new subpicture region */
498 memset( &fmt, 0, sizeof(video_format_t) );
499 fmt.i_chroma = VLC_CODEC_TEXT;
501 fmt.i_width = fmt.i_height = 0;
502 fmt.i_x_offset = fmt.i_y_offset = 0;
503 p_spu->p_region = subpicture_region_New( &fmt );
504 if( !p_spu->p_region )
506 msg_Err( p_dec, "cannot allocate SPU region" );
507 free( psz_subtitle );
508 decoder_DeleteSubpicture( p_dec, p_spu );
512 /* Decode and format the subpicture unit */
513 if( p_dec->fmt_in.i_codec != VLC_CODEC_SSA )
515 /* Normal text subs, easy markup */
516 p_spu->p_region->i_align = SUBPICTURE_ALIGN_BOTTOM | p_sys->i_align;
517 p_spu->p_region->i_x = p_sys->i_align ? 20 : 0;
518 p_spu->p_region->i_y = 10;
520 /* Remove formatting from string */
522 p_spu->p_region->psz_text = StripTags( psz_subtitle );
523 if( var_CreateGetBool( p_dec, "subsdec-formatted" ) )
525 p_spu->p_region->psz_html = CreateHtmlSubtitle( &p_spu->p_region->i_align, psz_subtitle );
528 p_spu->i_start = p_block->i_pts;
529 p_spu->i_stop = p_block->i_pts + p_block->i_length;
530 p_spu->b_ephemer = (p_block->i_length == 0);
531 p_spu->b_absolute = false;
535 /* Decode SSA/USF strings */
536 ParseSSAString( p_dec, psz_subtitle, p_spu );
538 p_spu->i_start = p_block->i_pts;
539 p_spu->i_stop = p_block->i_pts + p_block->i_length;
540 p_spu->b_ephemer = (p_block->i_length == 0);
541 p_spu->b_absolute = false;
542 p_spu->i_original_picture_width = p_sys->i_original_width;
543 p_spu->i_original_picture_height = p_sys->i_original_height;
545 free( psz_subtitle );
550 char* GotoNextLine( char *psz_text )
552 char *p_newline = psz_text;
554 while( p_newline[0] != '\0' )
556 if( p_newline[0] == '\n' || p_newline[0] == '\r' )
559 while( p_newline[0] == '\n' || p_newline[0] == '\r' )
568 /* Function now handles tags with attribute values, and tries
569 * to deal with &' commands too. It no longer modifies the string
570 * in place, so that the original text can be reused
572 static char *StripTags( char *psz_subtitle )
574 char *psz_text_start;
577 psz_text = psz_text_start = malloc( strlen( psz_subtitle ) + 1 );
578 if( !psz_text_start )
581 while( *psz_subtitle )
583 if( *psz_subtitle == '<' )
585 if( strncasecmp( psz_subtitle, "<br/>", 5 ) == 0 )
588 psz_subtitle += strcspn( psz_subtitle, ">" );
590 else if( *psz_subtitle == '&' )
592 if( !strncasecmp( psz_subtitle, "<", 4 ))
595 psz_subtitle += strcspn( psz_subtitle, ";" );
597 else if( !strncasecmp( psz_subtitle, ">", 4 ))
600 psz_subtitle += strcspn( psz_subtitle, ";" );
602 else if( !strncasecmp( psz_subtitle, "&", 5 ))
605 psz_subtitle += strcspn( psz_subtitle, ";" );
607 else if( !strncasecmp( psz_subtitle, """, 6 ))
610 psz_subtitle += strcspn( psz_subtitle, ";" );
614 /* Assume it is just a normal ampersand */
620 *psz_text++ = *psz_subtitle;
626 char *psz = realloc( psz_text_start, strlen( psz_text_start ) + 1 );
627 if( psz ) psz_text_start = psz;
629 return psz_text_start;
632 /* Try to respect any style tags present in the subtitle string. The main
633 * problem here is a lack of adequate specs for the subtitle formats.
634 * SSA/ASS and USF are both detail spec'ed -- but they are handled elsewhere.
635 * SAMI has a detailed spec, but extensive rework is needed in the demux
636 * code to prevent all this style information being excised, as it presently
638 * That leaves the others - none of which were (I guess) originally intended
639 * to be carrying style information. Over time people have used them that way.
640 * In the absence of specifications from which to work, the tags supported
641 * have been restricted to the simple set permitted by the USF DTD, ie. :
642 * Basic: <br>, <i>, <b>, <u>
654 * There is also the further restriction that the subtitle be well-formed
655 * as an XML entity, ie. the HTML sentence:
656 * <b><i>Bold and Italics</b></i>
657 * doesn't qualify because the tags aren't nested one inside the other.
658 * <text> tags are automatically added to the output to ensure
660 * If the text doesn't qualify for any reason, a NULL string is
661 * returned, and the rendering engine will fall back to the
662 * plain text version of the subtitle.
664 static void HtmlNPut( char **ppsz_html, const char *psz_text, int i_max )
666 const int i_len = strlen(psz_text);
668 strncpy( *ppsz_html, psz_text, i_max );
669 *ppsz_html += __MIN(i_max,i_len);
672 static void HtmlPut( char **ppsz_html, const char *psz_text )
674 strcpy( *ppsz_html, psz_text );
675 *ppsz_html += strlen(psz_text);
677 static void HtmlCopy( char **ppsz_html, char **ppsz_subtitle, const char *psz_text )
679 HtmlPut( ppsz_html, psz_text );
680 *ppsz_subtitle += strlen(psz_text);
683 static char *CreateHtmlSubtitle( int *pi_align, char *psz_subtitle )
686 char *psz_tag = malloc( ( strlen( psz_subtitle ) / 3 ) + 1 );
693 size_t i_buf_size = strlen( psz_subtitle ) + 100;
694 char *psz_html_start = malloc( i_buf_size );
695 char *psz_html = psz_html_start;
696 if( psz_html_start == NULL )
703 bool b_has_align = false;
705 HtmlPut( &psz_html, "<text>" );
708 while( *psz_subtitle )
710 if( *psz_subtitle == '\n' )
712 HtmlPut( &psz_html, "<br/>" );
715 else if( *psz_subtitle == '<' )
717 if( !strncasecmp( psz_subtitle, "<br/>", 5 ))
719 HtmlCopy( &psz_html, &psz_subtitle, "<br/>" );
721 else if( !strncasecmp( psz_subtitle, "<b>", 3 ) )
723 HtmlCopy( &psz_html, &psz_subtitle, "<b>" );
724 strcat( psz_tag, "b" );
726 else if( !strncasecmp( psz_subtitle, "<i>", 3 ) )
728 HtmlCopy( &psz_html, &psz_subtitle, "<i>" );
729 strcat( psz_tag, "i" );
731 else if( !strncasecmp( psz_subtitle, "<u>", 3 ) )
733 HtmlCopy( &psz_html, &psz_subtitle, "<u>" );
734 strcat( psz_tag, "u" );
736 else if( !strncasecmp( psz_subtitle, "<font ", 6 ))
738 const char *psz_attribs[] = { "face=", "family=", "size=",
739 "color=", "outline-color=", "shadow-color=",
740 "outline-level=", "shadow-level=", "back-color=",
743 HtmlCopy( &psz_html, &psz_subtitle, "<font " );
744 strcat( psz_tag, "f" );
746 while( *psz_subtitle != '>' )
750 for( k=0; psz_attribs[ k ]; k++ )
752 int i_len = strlen( psz_attribs[ k ] );
754 if( !strncasecmp( psz_subtitle, psz_attribs[k], i_len ) )
757 HtmlPut( &psz_html, psz_attribs[k] );
758 psz_subtitle += i_len;
761 if( *psz_subtitle == '"' )
764 i_len = strcspn( psz_subtitle, "\"" );
768 i_len = strcspn( psz_subtitle, " \t>" );
770 HtmlPut( &psz_html, "\"" );
771 if( !strcmp( psz_attribs[ k ], "color=" ) && *psz_subtitle >= '0' && *psz_subtitle <= '9' )
772 HtmlPut( &psz_html, "#" );
773 HtmlNPut( &psz_html, psz_subtitle, i_len );
774 HtmlPut( &psz_html, "\"" );
776 psz_subtitle += i_len;
777 if( *psz_subtitle == '\"' )
782 if( psz_attribs[ k ] == NULL )
784 /* Jump over unrecognised tag */
785 int i_len = strcspn( psz_subtitle, "\"" ) + 1;
787 i_len += strcspn( psz_subtitle + i_len, "\"" ) + 1;
788 psz_subtitle += i_len;
790 while (*psz_subtitle == ' ')
791 *psz_html++ = *psz_subtitle++;
793 *psz_html++ = *psz_subtitle++;
795 else if( !strncmp( psz_subtitle, "</", 2 ))
797 bool b_match = false;
798 bool b_ignore = false;
799 int i_len = strlen( psz_tag ) - 1;
800 char *psz_lastTag = NULL;
804 psz_lastTag = psz_tag + i_len;
807 switch( *psz_lastTag )
810 b_match = !strncasecmp( psz_subtitle, "</b>", 4 );
814 b_match = !strncasecmp( psz_subtitle, "</i>", 4 );
818 b_match = !strncasecmp( psz_subtitle, "</u>", 4 );
822 b_match = !strncasecmp( psz_subtitle, "</font>", 7 );
826 i_len = strcspn( psz_subtitle, ">" );
827 b_match = psz_subtitle[i_len] == '>';
836 /* Not well formed -- kill everything */
837 free( psz_html_start );
838 psz_html_start = NULL;
843 HtmlNPut( &psz_html, psz_subtitle, i_len );
845 psz_subtitle += i_len;
847 else if( ( psz_subtitle[1] < 'a' || psz_subtitle[1] > 'z' ) &&
848 ( psz_subtitle[1] < 'A' || psz_subtitle[1] > 'Z' ) )
850 /* We have a single < */
851 HtmlPut( &psz_html, "<" );
856 /* We have an unknown tag or a single < */
858 /* Search for the next tag or end of tag or end of string */
859 char *psz_stop = psz_subtitle + 1 + strcspn( &psz_subtitle[1], "<>" );
860 char *psz_closing = strstr( psz_subtitle, "/>" );
862 if( psz_closing && psz_closing < psz_stop )
864 /* We have a self closed tag, remove it */
865 psz_subtitle = &psz_closing[2];
867 else if( *psz_stop == '>' )
871 snprintf( psz_match, sizeof(psz_match), "</%s", &psz_subtitle[1] );
872 psz_match[strcspn( psz_match, " \t>" )] = '\0';
874 if( strstr( psz_subtitle, psz_match ) )
876 /* We have the closing tag, ignore it TODO */
877 psz_subtitle = &psz_stop[1];
878 strcat( psz_tag, "I" );
882 int i_len = psz_stop + 1 - psz_subtitle;
884 /* Copy the whole data */
885 for( ; i_len > 0; i_len--, psz_subtitle++ )
887 if( *psz_subtitle == '<' )
888 HtmlPut( &psz_html, "<" );
889 else if( *psz_subtitle == '>' )
890 HtmlPut( &psz_html, ">" );
892 *psz_html++ = *psz_subtitle;
898 /* We have a single < */
899 HtmlPut( &psz_html, "<" );
904 else if( *psz_subtitle == '&' )
906 if( !strncasecmp( psz_subtitle, "<", 4 ))
908 HtmlCopy( &psz_html, &psz_subtitle, "<" );
910 else if( !strncasecmp( psz_subtitle, ">", 4 ))
912 HtmlCopy( &psz_html, &psz_subtitle, ">" );
914 else if( !strncasecmp( psz_subtitle, "&", 5 ))
916 HtmlCopy( &psz_html, &psz_subtitle, "&" );
920 HtmlPut( &psz_html, "&" );
924 else if( *psz_subtitle == '>' )
926 HtmlPut( &psz_html, ">" );
929 else if( psz_subtitle[0] == '{' && psz_subtitle[1] == '\\' &&
930 strchr( psz_subtitle, '}' ) )
932 /* Check for forced alignment */
934 !strncmp( psz_subtitle, "{\\an", 4 ) && psz_subtitle[4] >= '1' && psz_subtitle[4] <= '9' && psz_subtitle[5] == '}' )
936 static const int pi_vertical[3] = { SUBPICTURE_ALIGN_BOTTOM, 0, SUBPICTURE_ALIGN_TOP };
937 static const int pi_horizontal[3] = { SUBPICTURE_ALIGN_LEFT, 0, SUBPICTURE_ALIGN_RIGHT };
938 const int i_id = psz_subtitle[4] - '1';
941 *pi_align = pi_vertical[i_id/3] | pi_horizontal[i_id%3];
943 /* TODO fr -> rotation */
945 /* Hide {\stupidity} */
946 psz_subtitle = strchr( psz_subtitle, '}' ) + 1;
950 *psz_html = *psz_subtitle;
951 if( psz_html > psz_html_start )
953 /* Check for double whitespace */
954 if( ( *psz_html == ' ' || *psz_html == '\t' ) &&
955 ( *(psz_html-1) == ' ' || *(psz_html-1) == '\t' ) )
957 HtmlPut( &psz_html, NO_BREAKING_SPACE );
965 if( ( size_t )( psz_html - psz_html_start ) > i_buf_size - 50 )
967 const int i_len = psz_html - psz_html_start;
970 char *psz_new = realloc( psz_html_start, i_buf_size );
973 psz_html_start = psz_new;
974 psz_html = &psz_new[i_len];
979 static const char *psz_text_close = "</text>";
980 static const char *psz_tag_long = "/font>";
982 /* Realloc for closing tags and shrink memory */
983 const size_t i_length = (size_t)( psz_html - psz_html_start );
985 const size_t i_size = i_length + strlen(psz_tag_long) * strlen(psz_tag) + strlen(psz_text_close) + 1;
986 char *psz_new = realloc( psz_html_start, i_size );
989 psz_html_start = psz_new;
990 psz_html = &psz_new[i_length];
992 /* Close not well formed subtitle */
996 char *psz_last = &psz_tag[strlen(psz_tag)-1];
1000 HtmlPut( &psz_html, "</b>" );
1003 HtmlPut( &psz_html, "</i>" );
1006 HtmlPut( &psz_html, "</u>" );
1009 HtmlPut( &psz_html, "/font>" );
1017 HtmlPut( &psz_html, psz_text_close );
1022 return psz_html_start;