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 *****************************************************************************/
34 #include <vlc_common.h>
35 #include <vlc_plugin.h>
36 #include <vlc_codec.h>
37 #include <vlc_charset.h>
41 /*****************************************************************************
43 *****************************************************************************/
44 static const char *const ppsz_encodings[] = {
89 static const char *const ppsz_encoding_names[] = {
91 The character encoding name in parenthesis corresponds to that used for
92 the GetACP translation. "Windows-1252" applies to Western European
93 languages using the Latin alphabet. */
94 N_("Default (Windows-1252)"),
96 N_("Universal (UTF-8)"),
97 N_("Universal (UTF-16)"),
98 N_("Universal (big endian UTF-16)"),
99 N_("Universal (little endian UTF-16)"),
100 N_("Universal, Chinese (GB18030)"),
102 /* ISO 8859 and the likes */
104 N_("Western European (Latin-9)"), /* mostly superset of Latin-1 */
105 N_("Western European (Windows-1252)"),
107 N_("Eastern European (Latin-2)"),
108 N_("Eastern European (Windows-1250)"),
110 N_("Esperanto (Latin-3)"),
112 N_("Nordic (Latin-6)"), /* Latin 6 supersedes Latin 4 */
114 N_("Cyrillic (Windows-1251)"), /* ISO 8859-5 is not practically used */
115 N_("Russian (KOI8-R)"),
116 N_("Ukrainian (KOI8-U)"),
118 N_("Arabic (ISO 8859-6)"),
119 N_("Arabic (Windows-1256)"),
121 N_("Greek (ISO 8859-7)"),
122 N_("Greek (Windows-1253)"),
124 N_("Hebrew (ISO 8859-8)"),
125 N_("Hebrew (Windows-1255)"),
127 N_("Turkish (ISO 8859-9)"),
128 N_("Turkish (Windows-1254)"),
131 N_("Thai (TIS 620-2533/ISO 8859-11)"),
132 N_("Thai (Windows-874)"),
134 N_("Baltic (Latin-7)"),
135 N_("Baltic (Windows-1257)"),
136 /* 12 -> /dev/null */
138 N_("Celtic (Latin-8)"),
141 N_("South-Eastern European (Latin-10)"),
143 N_("Simplified Chinese (ISO-2022-CN-EXT)"),
144 N_("Simplified Chinese Unix (EUC-CN)"),
145 N_("Japanese (7-bits JIS/ISO-2022-JP-2)"),
146 N_("Japanese Unix (EUC-JP)"),
147 N_("Japanese (Shift JIS)"),
148 N_("Korean (EUC-KR/CP949)"),
149 N_("Korean (ISO-2022-KR)"),
150 N_("Traditional Chinese (Big5)"),
151 N_("Traditional Chinese Unix (EUC-TW)"),
152 N_("Hong-Kong Supplementary (HKSCS)"),
154 N_("Vietnamese (VISCII)"),
155 N_("Vietnamese (Windows-1258)"),
158 static const int pi_justification[] = { 0, 1, 2 };
159 static const char *const ppsz_justification_text[] = {
160 N_("Center"),N_("Left"),N_("Right")};
162 #define ENCODING_TEXT N_("Subtitles text encoding")
163 #define ENCODING_LONGTEXT N_("Set the encoding used in text subtitles")
164 #define ALIGN_TEXT N_("Subtitles justification")
165 #define ALIGN_LONGTEXT N_("Set the justification of subtitles")
166 #define AUTODETECT_UTF8_TEXT N_("UTF-8 subtitles autodetection")
167 #define AUTODETECT_UTF8_LONGTEXT N_("This enables automatic detection of " \
168 "UTF-8 encoding within subtitles files.")
169 #define FORMAT_TEXT N_("Formatted Subtitles")
170 #define FORMAT_LONGTEXT N_("Some subtitle formats allow for text formatting. " \
171 "VLC partly implements this, but you can choose to disable all formatting.")
173 static int OpenDecoder ( vlc_object_t * );
174 static void CloseDecoder ( vlc_object_t * );
177 set_shortname( N_("Subtitles"))
178 set_description( N_("Text subtitles decoder") )
179 set_capability( "decoder", 50 )
180 set_callbacks( OpenDecoder, CloseDecoder )
181 set_category( CAT_INPUT )
182 set_subcategory( SUBCAT_INPUT_SCODEC )
184 add_integer( "subsdec-align", 0, ALIGN_TEXT, ALIGN_LONGTEXT,
186 change_integer_list( pi_justification, ppsz_justification_text )
187 add_string( "subsdec-encoding", "",
188 ENCODING_TEXT, ENCODING_LONGTEXT, false )
189 change_string_list( ppsz_encodings, ppsz_encoding_names, 0 )
190 add_bool( "subsdec-autodetect-utf8", true,
191 AUTODETECT_UTF8_TEXT, AUTODETECT_UTF8_LONGTEXT, false )
192 add_bool( "subsdec-formatted", true, FORMAT_TEXT, FORMAT_LONGTEXT,
196 /*****************************************************************************
198 *****************************************************************************/
199 #define NO_BREAKING_SPACE " "
203 int i_align; /* Subtitles alignment on the vout */
205 vlc_iconv_t iconv_handle; /* handle to iconv instance */
206 bool b_autodetect_utf8;
210 static subpicture_t *DecodeBlock ( decoder_t *, block_t ** );
211 static subpicture_t *ParseText ( decoder_t *, block_t * );
212 static char *StripTags ( char * );
213 static char *CreateHtmlSubtitle( int *pi_align, char * );
215 /*****************************************************************************
216 * OpenDecoder: probe the decoder and return score
217 *****************************************************************************
218 * Tries to launch a decoder and return score so that the interface is able
220 *****************************************************************************/
221 static int OpenDecoder( vlc_object_t *p_this )
223 decoder_t *p_dec = (decoder_t*)p_this;
224 decoder_sys_t *p_sys;
226 switch( p_dec->fmt_in.i_codec )
229 case VLC_CODEC_ITU_T140:
235 p_dec->pf_decode_sub = DecodeBlock;
236 p_dec->fmt_out.i_cat = SPU_ES;
237 p_dec->fmt_out.i_codec = 0;
239 /* Allocate the memory needed to store the decoder's structure */
240 p_dec->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) );
246 p_sys->iconv_handle = (vlc_iconv_t)-1;
247 p_sys->b_autodetect_utf8 = false;
249 char *psz_charset = NULL;
251 /* First try demux-specified encoding */
252 if( p_dec->fmt_in.i_codec == VLC_CODEC_ITU_T140 )
253 psz_charset = strdup( "UTF-8" ); /* IUT T.140 is always using UTF-8 */
255 if( p_dec->fmt_in.subs.psz_encoding && *p_dec->fmt_in.subs.psz_encoding )
257 psz_charset = strdup (p_dec->fmt_in.subs.psz_encoding);
258 msg_Dbg (p_dec, "trying demuxer-specified character encoding: %s",
259 p_dec->fmt_in.subs.psz_encoding ?
260 p_dec->fmt_in.subs.psz_encoding : "not specified");
263 /* Second, try configured encoding */
264 if (psz_charset == NULL)
266 psz_charset = var_InheritString (p_dec, "subsdec-encoding");
267 msg_Dbg (p_dec, "trying configured character encoding: %s",
268 psz_charset ? psz_charset : "not specified");
269 if (psz_charset != NULL && !strcmp (psz_charset, "system"))
272 psz_charset = strdup ("");
273 /* ^ iconv() treats "" as nl_langinfo(CODESET) */
277 /* Third, try "local" encoding with optional UTF-8 autodetection */
278 if (psz_charset == NULL)
281 The Windows ANSI code page most commonly used for this language.
282 VLC uses this as a guess of the subtitle files character set
283 (if UTF-8 and UTF-16 autodetection fails).
284 Western European languages normally use "CP1252", which is a
285 Microsoft-variant of ISO 8859-1. That suits the Latin alphabet.
286 Other scripts use other code pages.
288 This MUST be a valid iconv character set. If unsure, please refer
289 the VideoLAN translators mailing list. */
290 const char *acp = vlc_pgettext("GetACP", "CP1252");
292 psz_charset = strdup (acp);
293 msg_Dbg (p_dec, "trying default character encoding: %s",
294 psz_charset ? psz_charset : "not specified");
296 if (var_InheritBool (p_dec, "subsdec-autodetect-utf8"))
298 msg_Dbg (p_dec, "using automatic UTF-8 detection");
299 p_sys->b_autodetect_utf8 = true;
303 /* Forth, don't do character decoding, i.e. assume UTF-8 */
304 if (psz_charset == NULL)
306 psz_charset = strdup ("UTF-8");
307 msg_Dbg (p_dec, "using UTF-8 character encoding" );
310 if ((psz_charset != NULL)
311 && strcasecmp (psz_charset, "UTF-8")
312 && strcasecmp (psz_charset, "utf8"))
314 p_sys->iconv_handle = vlc_iconv_open ("UTF-8", psz_charset);
315 if (p_sys->iconv_handle == (vlc_iconv_t)(-1))
316 msg_Err (p_dec, "cannot convert from %s: %m", psz_charset);
320 p_sys->i_align = var_InheritInteger( p_dec, "subsdec-align" );
325 /****************************************************************************
326 * DecodeBlock: the whole thing
327 ****************************************************************************
328 * This function must be fed with complete subtitles units.
329 ****************************************************************************/
330 static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
335 if( !pp_block || *pp_block == NULL )
339 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
341 block_Release( p_block );
345 p_spu = ParseText( p_dec, p_block );
347 block_Release( p_block );
353 /*****************************************************************************
354 * CloseDecoder: clean up the decoder
355 *****************************************************************************/
356 static void CloseDecoder( vlc_object_t *p_this )
358 decoder_t *p_dec = (decoder_t *)p_this;
359 decoder_sys_t *p_sys = p_dec->p_sys;
361 if( p_sys->iconv_handle != (vlc_iconv_t)-1 )
362 vlc_iconv_close( p_sys->iconv_handle );
367 /*****************************************************************************
368 * ParseText: parse an text subtitle packet and send it to the video output
369 *****************************************************************************/
370 static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block )
372 decoder_sys_t *p_sys = p_dec->p_sys;
373 subpicture_t *p_spu = NULL;
374 char *psz_subtitle = NULL;
376 /* We cannot display a subpicture with no date */
377 if( p_block->i_pts <= VLC_TS_INVALID )
379 msg_Warn( p_dec, "subtitle without a date" );
383 /* Check validity of packet data */
384 /* An "empty" line containing only \0 can be used to force
385 and ephemer picture from the screen */
386 if( p_block->i_buffer < 1 )
388 msg_Warn( p_dec, "no subtitle data" );
392 /* Should be resiliant against bad subtitles */
393 psz_subtitle = malloc( p_block->i_buffer + 1 );
394 if( psz_subtitle == NULL )
396 memcpy( psz_subtitle, p_block->p_buffer, p_block->i_buffer );
397 psz_subtitle[p_block->i_buffer] = '\0';
399 if( p_sys->iconv_handle == (vlc_iconv_t)-1 )
401 if (EnsureUTF8( psz_subtitle ) == NULL)
403 msg_Err( p_dec, "failed to convert subtitle encoding.\n"
404 "Try manually setting a character-encoding "
405 "before you open the file." );
411 if( p_sys->b_autodetect_utf8 )
413 if( IsUTF8( psz_subtitle ) == NULL )
415 msg_Dbg( p_dec, "invalid UTF-8 sequence: "
416 "disabling UTF-8 subtitles autodetection" );
417 p_sys->b_autodetect_utf8 = false;
421 if( !p_sys->b_autodetect_utf8 )
423 size_t inbytes_left = strlen( psz_subtitle );
424 size_t outbytes_left = 6 * inbytes_left;
425 char *psz_new_subtitle = xmalloc( outbytes_left + 1 );
426 char *psz_convert_buffer_out = psz_new_subtitle;
427 const char *psz_convert_buffer_in = psz_subtitle;
429 size_t ret = vlc_iconv( p_sys->iconv_handle,
430 &psz_convert_buffer_in, &inbytes_left,
431 &psz_convert_buffer_out, &outbytes_left );
433 *psz_convert_buffer_out++ = '\0';
434 free( psz_subtitle );
436 if( ( ret == (size_t)(-1) ) || inbytes_left )
438 free( psz_new_subtitle );
439 msg_Err( p_dec, "failed to convert subtitle encoding.\n"
440 "Try manually setting a character-encoding "
441 "before you open the file." );
445 psz_subtitle = realloc( psz_new_subtitle,
446 psz_convert_buffer_out - psz_new_subtitle );
448 psz_subtitle = psz_new_subtitle;
452 /* Create the subpicture unit */
453 p_spu = decoder_NewSubpictureText( p_dec );
456 free( psz_subtitle );
459 p_spu->i_start = p_block->i_pts;
460 p_spu->i_stop = p_block->i_pts + p_block->i_length;
461 p_spu->b_ephemer = (p_block->i_length == 0);
462 p_spu->b_absolute = false;
464 subpicture_updater_sys_t *p_spu_sys = p_spu->updater.p_sys;
466 p_spu_sys->align = SUBPICTURE_ALIGN_BOTTOM | p_sys->i_align;
467 p_spu_sys->text = StripTags( psz_subtitle );
468 if( var_InheritBool( p_dec, "subsdec-formatted" ) )
469 p_spu_sys->html = CreateHtmlSubtitle( &p_spu_sys->align, psz_subtitle );
471 free( psz_subtitle );
476 /* Function now handles tags with attribute values, and tries
477 * to deal with &' commands too. It no longer modifies the string
478 * in place, so that the original text can be reused
480 static char *StripTags( char *psz_subtitle )
482 char *psz_text_start;
485 psz_text = psz_text_start = malloc( strlen( psz_subtitle ) + 1 );
486 if( !psz_text_start )
489 while( *psz_subtitle )
491 if( *psz_subtitle == '<' )
493 if( strncasecmp( psz_subtitle, "<br/>", 5 ) == 0 )
496 psz_subtitle += strcspn( psz_subtitle, ">" );
498 else if( *psz_subtitle == '&' )
500 if( !strncasecmp( psz_subtitle, "<", 4 ))
503 psz_subtitle += strcspn( psz_subtitle, ";" );
505 else if( !strncasecmp( psz_subtitle, ">", 4 ))
508 psz_subtitle += strcspn( psz_subtitle, ";" );
510 else if( !strncasecmp( psz_subtitle, "&", 5 ))
513 psz_subtitle += strcspn( psz_subtitle, ";" );
515 else if( !strncasecmp( psz_subtitle, """, 6 ))
518 psz_subtitle += strcspn( psz_subtitle, ";" );
522 /* Assume it is just a normal ampersand */
528 *psz_text++ = *psz_subtitle;
531 /* Security fix: Account for the case where input ends early */
532 if( *psz_subtitle == '\0' ) break;
537 char *psz = realloc( psz_text_start, strlen( psz_text_start ) + 1 );
538 if( psz ) psz_text_start = psz;
540 return psz_text_start;
543 /* Try to respect any style tags present in the subtitle string. The main
544 * problem here is a lack of adequate specs for the subtitle formats.
545 * SSA/ASS and USF are both detail spec'ed -- but they are handled elsewhere.
546 * SAMI has a detailed spec, but extensive rework is needed in the demux
547 * code to prevent all this style information being excised, as it presently
549 * That leaves the others - none of which were (I guess) originally intended
550 * to be carrying style information. Over time people have used them that way.
551 * In the absence of specifications from which to work, the tags supported
552 * have been restricted to the simple set permitted by the USF DTD, ie. :
553 * Basic: <br>, <i>, <b>, <u>, <s>
565 * There is also the further restriction that the subtitle be well-formed
566 * as an XML entity, ie. the HTML sentence:
567 * <b><i>Bold and Italics</b></i>
568 * doesn't qualify because the tags aren't nested one inside the other.
569 * <text> tags are automatically added to the output to ensure
571 * If the text doesn't qualify for any reason, a NULL string is
572 * returned, and the rendering engine will fall back to the
573 * plain text version of the subtitle.
575 static void HtmlNPut( char **ppsz_html, const char *psz_text, int i_max )
577 const int i_len = strlen(psz_text);
579 strncpy( *ppsz_html, psz_text, i_max );
580 *ppsz_html += __MIN(i_max,i_len);
583 static void HtmlPut( char **ppsz_html, const char *psz_text )
585 strcpy( *ppsz_html, psz_text );
586 *ppsz_html += strlen(psz_text);
588 static void HtmlCopy( char **ppsz_html, char **ppsz_subtitle, const char *psz_text )
590 HtmlPut( ppsz_html, psz_text );
591 *ppsz_subtitle += strlen(psz_text);
594 static char *CreateHtmlSubtitle( int *pi_align, char *psz_subtitle )
597 char *psz_tag = malloc( ( strlen( psz_subtitle ) / 3 ) + 1 );
604 size_t i_buf_size = strlen( psz_subtitle ) + 100;
605 char *psz_html_start = malloc( i_buf_size );
606 char *psz_html = psz_html_start;
607 if( psz_html_start == NULL )
614 bool b_has_align = false;
616 HtmlPut( &psz_html, "<text>" );
619 while( *psz_subtitle )
621 if( *psz_subtitle == '\n' )
623 HtmlPut( &psz_html, "<br/>" );
626 else if( *psz_subtitle == '<' )
628 if( !strncasecmp( psz_subtitle, "<br/>", 5 ))
630 HtmlCopy( &psz_html, &psz_subtitle, "<br/>" );
632 else if( !strncasecmp( psz_subtitle, "<b>", 3 ) )
634 HtmlCopy( &psz_html, &psz_subtitle, "<b>" );
635 strcat( psz_tag, "b" );
637 else if( !strncasecmp( psz_subtitle, "<i>", 3 ) )
639 HtmlCopy( &psz_html, &psz_subtitle, "<i>" );
640 strcat( psz_tag, "i" );
642 else if( !strncasecmp( psz_subtitle, "<u>", 3 ) )
644 HtmlCopy( &psz_html, &psz_subtitle, "<u>" );
645 strcat( psz_tag, "u" );
647 else if( !strncasecmp( psz_subtitle, "<s>", 3 ) )
649 HtmlCopy( &psz_html, &psz_subtitle, "<s>" );
650 strcat( psz_tag, "s" );
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 HtmlNPut( &psz_html, psz_subtitle, i_len );
688 HtmlPut( &psz_html, "\"" );
690 psz_subtitle += i_len;
691 if( *psz_subtitle == '\"' )
696 if( psz_attribs[ k ] == NULL )
698 /* Jump over unrecognised tag */
699 int i_len = strcspn( psz_subtitle, "\"" );
700 if( psz_subtitle[i_len] == '\"' )
702 i_len += 1 + strcspn( &psz_subtitle[i_len + 1], "\"" );
703 if( psz_subtitle[i_len] == '\"' )
706 psz_subtitle += i_len;
708 while (*psz_subtitle == ' ')
709 *psz_html++ = *psz_subtitle++;
711 *psz_html++ = *psz_subtitle++;
713 else if( !strncmp( psz_subtitle, "</", 2 ))
715 bool b_match = false;
716 bool b_ignore = false;
717 int i_len = strlen( psz_tag ) - 1;
718 char *psz_lastTag = NULL;
722 psz_lastTag = psz_tag + i_len;
725 switch( *psz_lastTag )
728 b_match = !strncasecmp( psz_subtitle, "</b>", 4 );
732 b_match = !strncasecmp( psz_subtitle, "</i>", 4 );
736 b_match = !strncasecmp( psz_subtitle, "</u>", 4 );
740 b_match = !strncasecmp( psz_subtitle, "</s>", 4 );
744 b_match = !strncasecmp( psz_subtitle, "</font>", 7 );
748 i_len = strcspn( psz_subtitle, ">" );
749 b_match = psz_subtitle[i_len] == '>';
758 /* Not well formed -- kill everything */
759 free( psz_html_start );
760 psz_html_start = NULL;
765 HtmlNPut( &psz_html, psz_subtitle, i_len );
767 psz_subtitle += i_len;
769 else if( ( psz_subtitle[1] < 'a' || psz_subtitle[1] > 'z' ) &&
770 ( psz_subtitle[1] < 'A' || psz_subtitle[1] > 'Z' ) )
772 /* We have a single < */
773 HtmlPut( &psz_html, "<" );
778 /* We have an unknown tag or a single < */
780 /* Search for the next tag or end of tag or end of string */
781 char *psz_stop = psz_subtitle + 1 + strcspn( &psz_subtitle[1], "<>" );
782 char *psz_closing = strstr( psz_subtitle, "/>" );
784 if( psz_closing && psz_closing < psz_stop )
786 /* We have a self closed tag, remove it */
787 psz_subtitle = &psz_closing[2];
789 else if( *psz_stop == '>' )
793 snprintf( psz_match, sizeof(psz_match), "</%s", &psz_subtitle[1] );
794 psz_match[strcspn( psz_match, " \t>" )] = '\0';
796 if( strstr( psz_subtitle, psz_match ) )
798 /* We have the closing tag, ignore it TODO */
799 psz_subtitle = &psz_stop[1];
800 strcat( psz_tag, "I" );
804 int i_len = psz_stop + 1 - psz_subtitle;
806 /* Copy the whole data */
807 for( ; i_len > 0; i_len--, psz_subtitle++ )
809 if( *psz_subtitle == '<' )
810 HtmlPut( &psz_html, "<" );
811 else if( *psz_subtitle == '>' )
812 HtmlPut( &psz_html, ">" );
814 *psz_html++ = *psz_subtitle;
820 /* We have a single < */
821 HtmlPut( &psz_html, "<" );
826 else if( *psz_subtitle == '&' )
828 if( !strncasecmp( psz_subtitle, "<", 4 ))
830 HtmlCopy( &psz_html, &psz_subtitle, "<" );
832 else if( !strncasecmp( psz_subtitle, ">", 4 ))
834 HtmlCopy( &psz_html, &psz_subtitle, ">" );
836 else if( !strncasecmp( psz_subtitle, "&", 5 ))
838 HtmlCopy( &psz_html, &psz_subtitle, "&" );
842 HtmlPut( &psz_html, "&" );
846 else if( *psz_subtitle == '>' )
848 HtmlPut( &psz_html, ">" );
851 else if( psz_subtitle[0] == '{' && psz_subtitle[1] == '\\' &&
852 strchr( psz_subtitle, '}' ) )
854 /* Check for forced alignment */
856 !strncmp( psz_subtitle, "{\\an", 4 ) && psz_subtitle[4] >= '1' && psz_subtitle[4] <= '9' && psz_subtitle[5] == '}' )
858 static const int pi_vertical[3] = { SUBPICTURE_ALIGN_BOTTOM, 0, SUBPICTURE_ALIGN_TOP };
859 static const int pi_horizontal[3] = { SUBPICTURE_ALIGN_LEFT, 0, SUBPICTURE_ALIGN_RIGHT };
860 const int i_id = psz_subtitle[4] - '1';
863 *pi_align = pi_vertical[i_id/3] | pi_horizontal[i_id%3];
865 /* TODO fr -> rotation */
867 /* Hide {\stupidity} */
868 psz_subtitle = strchr( psz_subtitle, '}' ) + 1;
870 else if( psz_subtitle[0] == '{' &&
871 ( psz_subtitle[1] == 'Y' || psz_subtitle[1] == 'y' )
872 && psz_subtitle[2] == ':' && strchr( psz_subtitle, '}' ) )
874 // FIXME: We don't do difference between Y and y, and we should.
875 if( psz_subtitle[3] == 'i' )
877 HtmlPut( &psz_html, "<i>" );
878 strcat( psz_tag, "i" );
880 if( psz_subtitle[3] == 'b' )
882 HtmlPut( &psz_html, "<b>" );
883 strcat( psz_tag, "b" );
885 if( psz_subtitle[3] == 'u' )
887 HtmlPut( &psz_html, "<u>" );
888 strcat( psz_tag, "u" );
890 psz_subtitle = strchr( psz_subtitle, '}' ) + 1;
892 else if( psz_subtitle[0] == '{' && psz_subtitle[2] == ':' && strchr( psz_subtitle, '}' ) )
894 // Hide other {x:y} atrocities, like {c:$bbggrr} or {P:x}
895 psz_subtitle = strchr( psz_subtitle, '}' ) + 1;
897 else if( psz_subtitle[0] == '\\' && psz_subtitle[1] )
899 if( psz_subtitle[1] == 'N' || psz_subtitle[1] == 'n' )
901 HtmlPut( &psz_html, "<br/>" );
904 else if( psz_subtitle[1] == 'h' )
906 /* Non breakable space */
907 HtmlPut( &psz_html, NO_BREAKING_SPACE );
912 HtmlPut( &psz_html, "\\" );
918 *psz_html = *psz_subtitle;
919 if( psz_html > psz_html_start )
921 /* Check for double whitespace */
922 if( ( *psz_html == ' ' || *psz_html == '\t' ) &&
923 ( *(psz_html-1) == ' ' || *(psz_html-1) == '\t' ) )
925 HtmlPut( &psz_html, NO_BREAKING_SPACE );
933 if( ( size_t )( psz_html - psz_html_start ) > i_buf_size - 50 )
935 const int i_len = psz_html - psz_html_start;
938 char *psz_new = realloc( psz_html_start, i_buf_size );
941 psz_html_start = psz_new;
942 psz_html = &psz_new[i_len];
947 static const char *psz_text_close = "</text>";
948 static const char *psz_tag_long = "/font>";
950 /* Realloc for closing tags and shrink memory */
951 const size_t i_length = (size_t)( psz_html - psz_html_start );
953 const size_t i_size = i_length + strlen(psz_tag_long) * strlen(psz_tag) + strlen(psz_text_close) + 1;
954 char *psz_new = realloc( psz_html_start, i_size );
957 psz_html_start = psz_new;
958 psz_html = &psz_new[i_length];
960 /* Close not well formed subtitle */
964 char *psz_last = &psz_tag[strlen(psz_tag)-1];
968 HtmlPut( &psz_html, "</b>" );
971 HtmlPut( &psz_html, "</i>" );
974 HtmlPut( &psz_html, "</u>" );
977 HtmlPut( &psz_html, "</s>" );
980 HtmlPut( &psz_html, "/font>" );
988 HtmlPut( &psz_html, psz_text_close );
993 return psz_html_start;