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[] = {
96 static const char *const ppsz_encoding_names[] = {
98 The character encoding name in parenthesis corresponds to that used for
99 the GetACP translation. "Windows-1252" applies to Western European
100 languages using the Latin alphabet. */
101 N_("Default (Windows-1252)"),
102 N_("Universal (UTF-8)"),
103 N_("Universal (UTF-16)"),
104 N_("Universal (big endian UTF-16)"),
105 N_("Universal (little endian UTF-16)"),
106 N_("Universal, Chinese (GB18030)"),
108 /* ISO 8859 and the likes */
110 N_("Western European (Latin-9)"), /* mostly superset of Latin-1 */
111 N_("Western European (Windows-1252)"),
113 N_("Eastern European (Latin-2)"),
114 N_("Eastern European (Windows-1250)"),
116 N_("Esperanto (Latin-3)"),
118 N_("Nordic (Latin-6)"), /* Latin 6 supersedes Latin 4 */
120 N_("Cyrillic (Windows-1251)"), /* ISO 8859-5 is not practically used */
121 N_("Russian (KOI8-R)"),
122 N_("Ukrainian (KOI8-U)"),
124 N_("Arabic (ISO 8859-6)"),
125 N_("Arabic (Windows-1256)"),
127 N_("Greek (ISO 8859-7)"),
128 N_("Greek (Windows-1253)"),
130 N_("Hebrew (ISO 8859-8)"),
131 N_("Hebrew (Windows-1255)"),
133 N_("Turkish (ISO 8859-9)"),
134 N_("Turkish (Windows-1254)"),
137 N_("Thai (TIS 620-2533/ISO 8859-11)"),
138 N_("Thai (Windows-874)"),
140 N_("Baltic (Latin-7)"),
141 N_("Baltic (Windows-1257)"),
142 /* 12 -> /dev/null */
144 N_("Celtic (Latin-8)"),
147 N_("South-Eastern European (Latin-10)"),
149 N_("Simplified Chinese (ISO-2022-CN-EXT)"),
150 N_("Simplified Chinese Unix (EUC-CN)"),
151 N_("Japanese (7-bits JIS/ISO-2022-JP-2)"),
152 N_("Japanese Unix (EUC-JP)"),
153 N_("Japanese (Shift JIS)"),
154 N_("Korean (EUC-KR/CP949)"),
155 N_("Korean (ISO-2022-KR)"),
156 N_("Traditional Chinese (Big5)"),
157 N_("Traditional Chinese Unix (EUC-TW)"),
158 N_("Hong-Kong Supplementary (HKSCS)"),
160 N_("Vietnamese (VISCII)"),
161 N_("Vietnamese (Windows-1258)"),
164 SSA supports charset selection.
165 The following known charsets are used:
167 0 = Ansi - Western European
172 128 = Japanese (Shift JIS)
175 134 = GB2312 Simplified Chinese
176 136 = Big5 Traditional Chinese
183 204 = Russian (Cyrillic)
185 238 = Eastern European
189 static const int pi_justification[] = { 0, 1, 2 };
190 static const char *const ppsz_justification_text[] = {
191 N_("Center"),N_("Left"),N_("Right")};
193 #define ENCODING_TEXT N_("Subtitles text encoding")
194 #define ENCODING_LONGTEXT N_("Set the encoding used in text subtitles")
195 #define ALIGN_TEXT N_("Subtitles justification")
196 #define ALIGN_LONGTEXT N_("Set the justification of subtitles")
197 #define AUTODETECT_UTF8_TEXT N_("UTF-8 subtitles autodetection")
198 #define AUTODETECT_UTF8_LONGTEXT N_("This enables automatic detection of " \
199 "UTF-8 encoding within subtitles files.")
200 #define FORMAT_TEXT N_("Formatted Subtitles")
201 #define FORMAT_LONGTEXT N_("Some subtitle formats allow for text formatting. " \
202 "VLC partly implements this, but you can choose to disable all formatting.")
206 set_shortname( N_("Subtitles"))
207 set_description( N_("Text subtitles decoder") )
208 set_capability( "decoder", 50 )
209 set_callbacks( OpenDecoder, CloseDecoder )
210 set_category( CAT_INPUT )
211 set_subcategory( SUBCAT_INPUT_SCODEC )
213 add_integer( "subsdec-align", 0, NULL, ALIGN_TEXT, ALIGN_LONGTEXT,
215 change_integer_list( pi_justification, ppsz_justification_text, NULL )
216 add_string( "subsdec-encoding", "", NULL,
217 ENCODING_TEXT, ENCODING_LONGTEXT, false )
218 change_string_list( ppsz_encodings, ppsz_encoding_names, 0 )
219 add_bool( "subsdec-autodetect-utf8", true, NULL,
220 AUTODETECT_UTF8_TEXT, AUTODETECT_UTF8_LONGTEXT, false )
221 add_bool( "subsdec-formatted", true, NULL, FORMAT_TEXT, FORMAT_LONGTEXT,
225 /*****************************************************************************
226 * OpenDecoder: probe the decoder and return score
227 *****************************************************************************
228 * Tries to launch a decoder and return score so that the interface is able
230 *****************************************************************************/
231 static int OpenDecoder( vlc_object_t *p_this )
233 decoder_t *p_dec = (decoder_t*)p_this;
234 decoder_sys_t *p_sys;
236 switch( p_dec->fmt_in.i_codec )
240 case VLC_CODEC_ITU_T140:
246 p_dec->pf_decode_sub = DecodeBlock;
247 p_dec->fmt_out.i_cat = SPU_ES;
248 p_dec->fmt_out.i_codec = 0;
250 /* Allocate the memory needed to store the decoder's structure */
251 p_dec->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) );
257 p_sys->iconv_handle = (vlc_iconv_t)-1;
258 p_sys->b_autodetect_utf8 = false;
259 p_sys->b_ass = false;
260 p_sys->i_original_height = -1;
261 p_sys->i_original_width = -1;
262 TAB_INIT( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
263 TAB_INIT( p_sys->i_images, p_sys->pp_images );
265 char *psz_charset = NULL;
267 /* First try demux-specified encoding */
268 if( p_dec->fmt_in.i_codec == VLC_CODEC_ITU_T140 )
269 psz_charset = strdup( "UTF-8" ); /* IUT T.140 is always using UTF-8 */
271 if( p_dec->fmt_in.subs.psz_encoding && *p_dec->fmt_in.subs.psz_encoding )
273 psz_charset = strdup (p_dec->fmt_in.subs.psz_encoding);
274 msg_Dbg (p_dec, "trying demuxer-specified character encoding: %s",
275 p_dec->fmt_in.subs.psz_encoding ?
276 p_dec->fmt_in.subs.psz_encoding : "not specified");
279 /* Second, try configured encoding */
280 if (psz_charset == NULL)
282 psz_charset = var_CreateGetNonEmptyString (p_dec, "subsdec-encoding");
283 msg_Dbg (p_dec, "trying configured character encoding: %s",
284 psz_charset ? psz_charset : "not specified");
287 /* Third, try "local" encoding with optional UTF-8 autodetection */
288 if (psz_charset == NULL)
291 The Windows ANSI code page most commonly used for this language.
292 VLC uses this as a guess of the subtitle files character set
293 (if UTF-8 and UTF-16 autodetection fails).
294 Western European languages normally use "CP1252", which is a
295 Microsoft-variant of ISO 8859-1. That suits the Latin alphabet.
296 Other scripts use other code pages.
298 This MUST be a valid iconv character set. If unsure, please refer
299 the VideoLAN translators mailing list. */
300 const char *acp = vlc_pgettext("GetACP", "CP1252");
302 psz_charset = strdup (acp);
303 msg_Dbg (p_dec, "trying default character encoding: %s",
304 psz_charset ? psz_charset : "not specified");
306 if (var_CreateGetBool (p_dec, "subsdec-autodetect-utf8"))
308 msg_Dbg (p_dec, "using automatic UTF-8 detection");
309 p_sys->b_autodetect_utf8 = true;
313 /* Forth, don't do character decoding, i.e. assume UTF-8 */
314 if (psz_charset == NULL)
316 psz_charset = strdup ("UTF-8");
317 msg_Dbg (p_dec, "using UTF-8 character encoding" );
320 if ((psz_charset != NULL)
321 && strcasecmp (psz_charset, "UTF-8")
322 && strcasecmp (psz_charset, "utf8"))
324 p_sys->iconv_handle = vlc_iconv_open ("UTF-8", psz_charset);
325 if (p_sys->iconv_handle == (vlc_iconv_t)(-1))
326 msg_Err (p_dec, "cannot convert from %s: %m", psz_charset);
330 p_sys->i_align = var_CreateGetInteger( p_dec, "subsdec-align" );
332 if( p_dec->fmt_in.i_codec == VLC_CODEC_SSA
333 && var_CreateGetBool( p_dec, "subsdec-formatted" ) )
335 if( p_dec->fmt_in.i_extra > 0 )
336 ParseSSAHeader( p_dec );
342 /****************************************************************************
343 * DecodeBlock: the whole thing
344 ****************************************************************************
345 * This function must be fed with complete subtitles units.
346 ****************************************************************************/
347 static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
352 if( !pp_block || *pp_block == NULL )
356 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
358 block_Release( p_block );
362 p_spu = ParseText( p_dec, p_block );
364 block_Release( p_block );
370 /*****************************************************************************
371 * CloseDecoder: clean up the decoder
372 *****************************************************************************/
373 static void CloseDecoder( vlc_object_t *p_this )
375 decoder_t *p_dec = (decoder_t *)p_this;
376 decoder_sys_t *p_sys = p_dec->p_sys;
378 if( p_sys->iconv_handle != (vlc_iconv_t)-1 )
379 vlc_iconv_close( p_sys->iconv_handle );
381 if( p_sys->pp_ssa_styles )
384 for( i = 0; i < p_sys->i_ssa_styles; i++ )
386 if( !p_sys->pp_ssa_styles[i] )
389 free( p_sys->pp_ssa_styles[i]->psz_stylename );
390 free( p_sys->pp_ssa_styles[i]->font_style.psz_fontname );
391 free( p_sys->pp_ssa_styles[i] );
393 TAB_CLEAN( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
395 if( p_sys->pp_images )
398 for( i = 0; i < p_sys->i_images; i++ )
400 if( !p_sys->pp_images[i] )
403 if( p_sys->pp_images[i]->p_pic )
404 picture_Release( p_sys->pp_images[i]->p_pic );
405 free( p_sys->pp_images[i]->psz_filename );
407 free( p_sys->pp_images[i] );
409 TAB_CLEAN( p_sys->i_images, p_sys->pp_images );
415 /*****************************************************************************
416 * ParseText: parse an text subtitle packet and send it to the video output
417 *****************************************************************************/
418 static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block )
420 decoder_sys_t *p_sys = p_dec->p_sys;
421 subpicture_t *p_spu = NULL;
422 char *psz_subtitle = NULL;
425 /* We cannot display a subpicture with no date */
426 if( p_block->i_pts <= VLC_TS_INVALID )
428 msg_Warn( p_dec, "subtitle without a date" );
432 /* Check validity of packet data */
433 /* An "empty" line containing only \0 can be used to force
434 and ephemer picture from the screen */
435 if( p_block->i_buffer < 1 )
437 msg_Warn( p_dec, "no subtitle data" );
441 /* Should be resiliant against bad subtitles */
442 psz_subtitle = malloc( p_block->i_buffer + 1 );
443 if( psz_subtitle == NULL )
445 memcpy( psz_subtitle, p_block->p_buffer, p_block->i_buffer );
446 psz_subtitle[p_block->i_buffer] = '\0';
448 if( p_sys->iconv_handle == (vlc_iconv_t)-1 )
450 if (EnsureUTF8( psz_subtitle ) == NULL)
452 msg_Err( p_dec, "failed to convert subtitle encoding.\n"
453 "Try manually setting a character-encoding "
454 "before you open the file." );
460 if( p_sys->b_autodetect_utf8 )
462 if( IsUTF8( psz_subtitle ) == NULL )
464 msg_Dbg( p_dec, "invalid UTF-8 sequence: "
465 "disabling UTF-8 subtitles autodetection" );
466 p_sys->b_autodetect_utf8 = false;
470 if( !p_sys->b_autodetect_utf8 )
472 size_t inbytes_left = strlen( psz_subtitle );
473 size_t outbytes_left = 6 * inbytes_left;
474 char *psz_new_subtitle = xmalloc( outbytes_left + 1 );
475 char *psz_convert_buffer_out = psz_new_subtitle;
476 const char *psz_convert_buffer_in = psz_subtitle;
478 size_t ret = vlc_iconv( p_sys->iconv_handle,
479 &psz_convert_buffer_in, &inbytes_left,
480 &psz_convert_buffer_out, &outbytes_left );
482 *psz_convert_buffer_out++ = '\0';
483 free( psz_subtitle );
485 if( ( ret == (size_t)(-1) ) || inbytes_left )
487 free( psz_new_subtitle );
488 msg_Err( p_dec, "failed to convert subtitle encoding.\n"
489 "Try manually setting a character-encoding "
490 "before you open the file." );
494 psz_subtitle = realloc( psz_new_subtitle,
495 psz_convert_buffer_out - psz_new_subtitle );
497 psz_subtitle = psz_new_subtitle;
501 /* Create the subpicture unit */
502 p_spu = decoder_NewSubpicture( p_dec, NULL );
505 msg_Warn( p_dec, "can't get spu buffer" );
506 free( psz_subtitle );
510 /* Create a new subpicture region */
511 memset( &fmt, 0, sizeof(video_format_t) );
512 fmt.i_chroma = VLC_CODEC_TEXT;
513 fmt.i_width = fmt.i_height = 0;
514 fmt.i_x_offset = fmt.i_y_offset = 0;
515 p_spu->p_region = subpicture_region_New( &fmt );
516 if( !p_spu->p_region )
518 msg_Err( p_dec, "cannot allocate SPU region" );
519 free( psz_subtitle );
520 decoder_DeleteSubpicture( p_dec, p_spu );
524 /* Decode and format the subpicture unit */
525 if( p_dec->fmt_in.i_codec != VLC_CODEC_SSA )
527 /* Normal text subs, easy markup */
528 p_spu->p_region->i_align = SUBPICTURE_ALIGN_BOTTOM | p_sys->i_align;
529 p_spu->p_region->i_x = p_sys->i_align ? 20 : 0;
530 p_spu->p_region->i_y = 10;
532 /* Remove formatting from string */
534 p_spu->p_region->psz_text = StripTags( psz_subtitle );
535 if( var_CreateGetBool( p_dec, "subsdec-formatted" ) )
537 p_spu->p_region->psz_html = CreateHtmlSubtitle( &p_spu->p_region->i_align, psz_subtitle );
540 p_spu->i_start = p_block->i_pts;
541 p_spu->i_stop = p_block->i_pts + p_block->i_length;
542 p_spu->b_ephemer = (p_block->i_length == 0);
543 p_spu->b_absolute = false;
547 /* Decode SSA/USF strings */
548 ParseSSAString( p_dec, psz_subtitle, p_spu );
550 p_spu->i_start = p_block->i_pts;
551 p_spu->i_stop = p_block->i_pts + p_block->i_length;
552 p_spu->b_ephemer = (p_block->i_length == 0);
553 p_spu->b_absolute = false;
554 p_spu->i_original_picture_width = p_sys->i_original_width;
555 p_spu->i_original_picture_height = p_sys->i_original_height;
557 free( psz_subtitle );
562 char* GotoNextLine( char *psz_text )
564 char *p_newline = psz_text;
566 while( p_newline[0] != '\0' )
568 if( p_newline[0] == '\n' || p_newline[0] == '\r' )
571 while( p_newline[0] == '\n' || p_newline[0] == '\r' )
580 /* Function now handles tags with attribute values, and tries
581 * to deal with &' commands too. It no longer modifies the string
582 * in place, so that the original text can be reused
584 static char *StripTags( char *psz_subtitle )
586 char *psz_text_start;
589 psz_text = psz_text_start = malloc( strlen( psz_subtitle ) + 1 );
590 if( !psz_text_start )
593 while( *psz_subtitle )
595 if( *psz_subtitle == '<' )
597 if( strncasecmp( psz_subtitle, "<br/>", 5 ) == 0 )
600 psz_subtitle += strcspn( psz_subtitle, ">" );
602 else if( *psz_subtitle == '&' )
604 if( !strncasecmp( psz_subtitle, "<", 4 ))
607 psz_subtitle += strcspn( psz_subtitle, ";" );
609 else if( !strncasecmp( psz_subtitle, ">", 4 ))
612 psz_subtitle += strcspn( psz_subtitle, ";" );
614 else if( !strncasecmp( psz_subtitle, "&", 5 ))
617 psz_subtitle += strcspn( psz_subtitle, ";" );
619 else if( !strncasecmp( psz_subtitle, """, 6 ))
622 psz_subtitle += strcspn( psz_subtitle, ";" );
626 /* Assume it is just a normal ampersand */
632 *psz_text++ = *psz_subtitle;
638 char *psz = realloc( psz_text_start, strlen( psz_text_start ) + 1 );
639 if( psz ) psz_text_start = psz;
641 return psz_text_start;
644 /* Try to respect any style tags present in the subtitle string. The main
645 * problem here is a lack of adequate specs for the subtitle formats.
646 * SSA/ASS and USF are both detail spec'ed -- but they are handled elsewhere.
647 * SAMI has a detailed spec, but extensive rework is needed in the demux
648 * code to prevent all this style information being excised, as it presently
650 * That leaves the others - none of which were (I guess) originally intended
651 * to be carrying style information. Over time people have used them that way.
652 * In the absence of specifications from which to work, the tags supported
653 * have been restricted to the simple set permitted by the USF DTD, ie. :
654 * Basic: <br>, <i>, <b>, <u>, <s>
666 * There is also the further restriction that the subtitle be well-formed
667 * as an XML entity, ie. the HTML sentence:
668 * <b><i>Bold and Italics</b></i>
669 * doesn't qualify because the tags aren't nested one inside the other.
670 * <text> tags are automatically added to the output to ensure
672 * If the text doesn't qualify for any reason, a NULL string is
673 * returned, and the rendering engine will fall back to the
674 * plain text version of the subtitle.
676 static void HtmlNPut( char **ppsz_html, const char *psz_text, int i_max )
678 const int i_len = strlen(psz_text);
680 strncpy( *ppsz_html, psz_text, i_max );
681 *ppsz_html += __MIN(i_max,i_len);
684 static void HtmlPut( char **ppsz_html, const char *psz_text )
686 strcpy( *ppsz_html, psz_text );
687 *ppsz_html += strlen(psz_text);
689 static void HtmlCopy( char **ppsz_html, char **ppsz_subtitle, const char *psz_text )
691 HtmlPut( ppsz_html, psz_text );
692 *ppsz_subtitle += strlen(psz_text);
695 static char *CreateHtmlSubtitle( int *pi_align, char *psz_subtitle )
698 char *psz_tag = malloc( ( strlen( psz_subtitle ) / 3 ) + 1 );
705 size_t i_buf_size = strlen( psz_subtitle ) + 100;
706 char *psz_html_start = malloc( i_buf_size );
707 char *psz_html = psz_html_start;
708 if( psz_html_start == NULL )
715 bool b_has_align = false;
717 HtmlPut( &psz_html, "<text>" );
720 while( *psz_subtitle )
722 if( *psz_subtitle == '\n' )
724 HtmlPut( &psz_html, "<br/>" );
727 else if( *psz_subtitle == '<' )
729 if( !strncasecmp( psz_subtitle, "<br/>", 5 ))
731 HtmlCopy( &psz_html, &psz_subtitle, "<br/>" );
733 else if( !strncasecmp( psz_subtitle, "<b>", 3 ) )
735 HtmlCopy( &psz_html, &psz_subtitle, "<b>" );
736 strcat( psz_tag, "b" );
738 else if( !strncasecmp( psz_subtitle, "<i>", 3 ) )
740 HtmlCopy( &psz_html, &psz_subtitle, "<i>" );
741 strcat( psz_tag, "i" );
743 else if( !strncasecmp( psz_subtitle, "<u>", 3 ) )
745 HtmlCopy( &psz_html, &psz_subtitle, "<u>" );
746 strcat( psz_tag, "u" );
748 else if( !strncasecmp( psz_subtitle, "<s>", 3 ) )
750 HtmlCopy( &psz_html, &psz_subtitle, "<s>" );
751 strcat( psz_tag, "s" );
753 else if( !strncasecmp( psz_subtitle, "<font ", 6 ))
755 const char *psz_attribs[] = { "face=", "family=", "size=",
756 "color=", "outline-color=", "shadow-color=",
757 "outline-level=", "shadow-level=", "back-color=",
760 HtmlCopy( &psz_html, &psz_subtitle, "<font " );
761 strcat( psz_tag, "f" );
763 while( *psz_subtitle != '>' )
767 for( k=0; psz_attribs[ k ]; k++ )
769 int i_len = strlen( psz_attribs[ k ] );
771 if( !strncasecmp( psz_subtitle, psz_attribs[k], i_len ) )
774 HtmlPut( &psz_html, psz_attribs[k] );
775 psz_subtitle += i_len;
778 if( *psz_subtitle == '"' )
781 i_len = strcspn( psz_subtitle, "\"" );
785 i_len = strcspn( psz_subtitle, " \t>" );
787 HtmlPut( &psz_html, "\"" );
788 if( !strcmp( psz_attribs[ k ], "color=" ) && *psz_subtitle >= '0' && *psz_subtitle <= '9' )
789 HtmlPut( &psz_html, "#" );
790 HtmlNPut( &psz_html, psz_subtitle, i_len );
791 HtmlPut( &psz_html, "\"" );
793 psz_subtitle += i_len;
794 if( *psz_subtitle == '\"' )
799 if( psz_attribs[ k ] == NULL )
801 /* Jump over unrecognised tag */
802 int i_len = strcspn( psz_subtitle, "\"" );
803 if( psz_subtitle[i_len] == '\"' )
805 i_len += 1 + strcspn( &psz_subtitle[i_len + 1], "\"" );
806 if( psz_subtitle[i_len] == '\"' )
809 psz_subtitle += i_len;
811 while (*psz_subtitle == ' ')
812 *psz_html++ = *psz_subtitle++;
814 *psz_html++ = *psz_subtitle++;
816 else if( !strncmp( psz_subtitle, "</", 2 ))
818 bool b_match = false;
819 bool b_ignore = false;
820 int i_len = strlen( psz_tag ) - 1;
821 char *psz_lastTag = NULL;
825 psz_lastTag = psz_tag + i_len;
828 switch( *psz_lastTag )
831 b_match = !strncasecmp( psz_subtitle, "</b>", 4 );
835 b_match = !strncasecmp( psz_subtitle, "</i>", 4 );
839 b_match = !strncasecmp( psz_subtitle, "</u>", 4 );
843 b_match = !strncasecmp( psz_subtitle, "</s>", 4 );
847 b_match = !strncasecmp( psz_subtitle, "</font>", 7 );
851 i_len = strcspn( psz_subtitle, ">" );
852 b_match = psz_subtitle[i_len] == '>';
861 /* Not well formed -- kill everything */
862 free( psz_html_start );
863 psz_html_start = NULL;
868 HtmlNPut( &psz_html, psz_subtitle, i_len );
870 psz_subtitle += i_len;
872 else if( ( psz_subtitle[1] < 'a' || psz_subtitle[1] > 'z' ) &&
873 ( psz_subtitle[1] < 'A' || psz_subtitle[1] > 'Z' ) )
875 /* We have a single < */
876 HtmlPut( &psz_html, "<" );
881 /* We have an unknown tag or a single < */
883 /* Search for the next tag or end of tag or end of string */
884 char *psz_stop = psz_subtitle + 1 + strcspn( &psz_subtitle[1], "<>" );
885 char *psz_closing = strstr( psz_subtitle, "/>" );
887 if( psz_closing && psz_closing < psz_stop )
889 /* We have a self closed tag, remove it */
890 psz_subtitle = &psz_closing[2];
892 else if( *psz_stop == '>' )
896 snprintf( psz_match, sizeof(psz_match), "</%s", &psz_subtitle[1] );
897 psz_match[strcspn( psz_match, " \t>" )] = '\0';
899 if( strstr( psz_subtitle, psz_match ) )
901 /* We have the closing tag, ignore it TODO */
902 psz_subtitle = &psz_stop[1];
903 strcat( psz_tag, "I" );
907 int i_len = psz_stop + 1 - psz_subtitle;
909 /* Copy the whole data */
910 for( ; i_len > 0; i_len--, psz_subtitle++ )
912 if( *psz_subtitle == '<' )
913 HtmlPut( &psz_html, "<" );
914 else if( *psz_subtitle == '>' )
915 HtmlPut( &psz_html, ">" );
917 *psz_html++ = *psz_subtitle;
923 /* We have a single < */
924 HtmlPut( &psz_html, "<" );
929 else if( *psz_subtitle == '&' )
931 if( !strncasecmp( psz_subtitle, "<", 4 ))
933 HtmlCopy( &psz_html, &psz_subtitle, "<" );
935 else if( !strncasecmp( psz_subtitle, ">", 4 ))
937 HtmlCopy( &psz_html, &psz_subtitle, ">" );
939 else if( !strncasecmp( psz_subtitle, "&", 5 ))
941 HtmlCopy( &psz_html, &psz_subtitle, "&" );
945 HtmlPut( &psz_html, "&" );
949 else if( *psz_subtitle == '>' )
951 HtmlPut( &psz_html, ">" );
954 else if( psz_subtitle[0] == '{' && psz_subtitle[1] == '\\' &&
955 strchr( psz_subtitle, '}' ) )
957 /* Check for forced alignment */
959 !strncmp( psz_subtitle, "{\\an", 4 ) && psz_subtitle[4] >= '1' && psz_subtitle[4] <= '9' && psz_subtitle[5] == '}' )
961 static const int pi_vertical[3] = { SUBPICTURE_ALIGN_BOTTOM, 0, SUBPICTURE_ALIGN_TOP };
962 static const int pi_horizontal[3] = { SUBPICTURE_ALIGN_LEFT, 0, SUBPICTURE_ALIGN_RIGHT };
963 const int i_id = psz_subtitle[4] - '1';
966 *pi_align = pi_vertical[i_id/3] | pi_horizontal[i_id%3];
968 /* TODO fr -> rotation */
970 /* Hide {\stupidity} */
971 psz_subtitle = strchr( psz_subtitle, '}' ) + 1;
973 else if( psz_subtitle[0] == '{' && psz_subtitle[1] == 'Y'
974 && psz_subtitle[2] == ':' && strchr( psz_subtitle, '}' ) )
976 /* Hide {Y:stupidity} */
977 psz_subtitle = strchr( psz_subtitle, '}' ) + 1;
979 else if( psz_subtitle[0] == '\\' && psz_subtitle[1] )
981 if( psz_subtitle[1] == 'N' || psz_subtitle[1] == 'n' )
983 HtmlPut( &psz_html, "<br/>" );
986 else if( psz_subtitle[1] == 'h' )
988 /* Non breakable space */
989 HtmlPut( &psz_html, NO_BREAKING_SPACE );
994 HtmlPut( &psz_html, "\\" );
1000 *psz_html = *psz_subtitle;
1001 if( psz_html > psz_html_start )
1003 /* Check for double whitespace */
1004 if( ( *psz_html == ' ' || *psz_html == '\t' ) &&
1005 ( *(psz_html-1) == ' ' || *(psz_html-1) == '\t' ) )
1007 HtmlPut( &psz_html, NO_BREAKING_SPACE );
1015 if( ( size_t )( psz_html - psz_html_start ) > i_buf_size - 50 )
1017 const int i_len = psz_html - psz_html_start;
1020 char *psz_new = realloc( psz_html_start, i_buf_size );
1023 psz_html_start = psz_new;
1024 psz_html = &psz_new[i_len];
1027 if( psz_html_start )
1029 static const char *psz_text_close = "</text>";
1030 static const char *psz_tag_long = "/font>";
1032 /* Realloc for closing tags and shrink memory */
1033 const size_t i_length = (size_t)( psz_html - psz_html_start );
1035 const size_t i_size = i_length + strlen(psz_tag_long) * strlen(psz_tag) + strlen(psz_text_close) + 1;
1036 char *psz_new = realloc( psz_html_start, i_size );
1039 psz_html_start = psz_new;
1040 psz_html = &psz_new[i_length];
1042 /* Close not well formed subtitle */
1046 char *psz_last = &psz_tag[strlen(psz_tag)-1];
1050 HtmlPut( &psz_html, "</b>" );
1053 HtmlPut( &psz_html, "</i>" );
1056 HtmlPut( &psz_html, "</u>" );
1059 HtmlPut( &psz_html, "</s>" );
1062 HtmlPut( &psz_html, "/font>" );
1070 HtmlPut( &psz_html, psz_text_close );
1075 return psz_html_start;