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", "MuleLao-1", "VISCII", "TCVN",
73 "HPROMAN8", "NEXTSTEP" };
75 SSA supports charset selection.
76 The following known charsets are used:
78 0 = Ansi - Western European
83 128 = Japanese (Shift JIS)
86 134 = GB2312 Simplified Chinese
87 136 = Big5 Traditional Chinese
94 204 = Russian (Cyrillic)
96 238 = Eastern European
100 static const int pi_justification[] = { 0, 1, 2 };
101 static const char *const ppsz_justification_text[] = {
102 N_("Center"),N_("Left"),N_("Right")};
104 #define ENCODING_TEXT N_("Subtitles text encoding")
105 #define ENCODING_LONGTEXT N_("Set the encoding used in text subtitles")
106 #define ALIGN_TEXT N_("Subtitles justification")
107 #define ALIGN_LONGTEXT N_("Set the justification of subtitles")
108 #define AUTODETECT_UTF8_TEXT N_("UTF-8 subtitles autodetection")
109 #define AUTODETECT_UTF8_LONGTEXT N_("This enables automatic detection of " \
110 "UTF-8 encoding within subtitles files.")
111 #define FORMAT_TEXT N_("Formatted Subtitles")
112 #define FORMAT_LONGTEXT N_("Some subtitle formats allow for text formatting. " \
113 "VLC partly implements this, but you can choose to disable all formatting.")
117 set_shortname( N_("Subtitles"))
118 set_description( N_("Text subtitles decoder") )
119 set_capability( "decoder", 50 )
120 set_callbacks( OpenDecoder, CloseDecoder )
121 set_category( CAT_INPUT )
122 set_subcategory( SUBCAT_INPUT_SCODEC )
124 add_integer( "subsdec-align", 0, NULL, ALIGN_TEXT, ALIGN_LONGTEXT,
126 change_integer_list( pi_justification, ppsz_justification_text, NULL )
127 add_string( "subsdec-encoding", DEFAULT_NAME, NULL,
128 ENCODING_TEXT, ENCODING_LONGTEXT, false )
129 change_string_list( ppsz_encodings, 0, 0 )
130 add_bool( "subsdec-autodetect-utf8", true, NULL,
131 AUTODETECT_UTF8_TEXT, AUTODETECT_UTF8_LONGTEXT, false )
132 add_bool( "subsdec-formatted", true, NULL, FORMAT_TEXT, FORMAT_LONGTEXT,
136 /*****************************************************************************
137 * OpenDecoder: probe the decoder and return score
138 *****************************************************************************
139 * Tries to launch a decoder and return score so that the interface is able
141 *****************************************************************************/
142 static int OpenDecoder( vlc_object_t *p_this )
144 decoder_t *p_dec = (decoder_t*)p_this;
145 decoder_sys_t *p_sys;
148 switch( p_dec->fmt_in.i_codec )
150 case VLC_FOURCC('s','u','b','t'):
151 case VLC_FOURCC('s','s','a',' '):
152 case VLC_FOURCC('t','1','4','0'):
158 p_dec->pf_decode_sub = DecodeBlock;
159 p_dec->fmt_out.i_cat = SPU_ES;
160 p_dec->fmt_out.i_codec = 0;
162 /* Allocate the memory needed to store the decoder's structure */
163 p_dec->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) );
169 p_sys->iconv_handle = (vlc_iconv_t)-1;
170 p_sys->b_autodetect_utf8 = false;
171 p_sys->b_ass = false;
172 p_sys->i_original_height = -1;
173 p_sys->i_original_width = -1;
174 TAB_INIT( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
175 TAB_INIT( p_sys->i_images, p_sys->pp_images );
177 char *psz_charset = NULL;
179 /* First try demux-specified encoding */
180 if( p_dec->fmt_in.i_codec == VLC_FOURCC('t','1','4','0') )
181 psz_charset = strdup( "UTF-8" ); /* IUT T.140 is always using UTF-8 */
183 if( p_dec->fmt_in.subs.psz_encoding && *p_dec->fmt_in.subs.psz_encoding )
185 psz_charset = strdup (p_dec->fmt_in.subs.psz_encoding);
186 msg_Dbg (p_dec, "trying demuxer-specified character encoding: %s",
187 p_dec->fmt_in.subs.psz_encoding ?: "not specified");
190 /* Second, try configured encoding */
191 if (psz_charset == NULL)
193 psz_charset = var_CreateGetNonEmptyString (p_dec, "subsdec-encoding");
194 if ((psz_charset != NULL) && !strcasecmp (psz_charset, DEFAULT_NAME))
200 msg_Dbg (p_dec, "trying configured character encoding: %s",
201 psz_charset ?: "not specified");
204 /* Third, try "local" encoding with optional UTF-8 autodetection */
205 if (psz_charset == NULL)
207 psz_charset = strdup (GetFallbackEncoding ());
208 msg_Dbg (p_dec, "trying default character encoding: %s",
209 psz_charset ?: "not specified");
211 if (var_CreateGetBool (p_dec, "subsdec-autodetect-utf8"))
213 msg_Dbg (p_dec, "using automatic UTF-8 detection");
214 p_sys->b_autodetect_utf8 = true;
218 /* Forth, don't do character decoding, i.e. assume UTF-8 */
219 if (psz_charset == NULL)
221 psz_charset = strdup ("UTF-8");
222 msg_Dbg (p_dec, "using UTF-8 character encoding" );
225 if ((psz_charset != NULL)
226 && strcasecmp (psz_charset, "UTF-8")
227 && strcasecmp (psz_charset, "utf8"))
229 p_sys->iconv_handle = vlc_iconv_open ("UTF-8", psz_charset);
230 if (p_sys->iconv_handle == (vlc_iconv_t)(-1))
231 msg_Err (p_dec, "cannot convert from %s: %m", psz_charset);
235 var_Create( p_dec, "subsdec-align", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
236 var_Get( p_dec, "subsdec-align", &val );
237 p_sys->i_align = val.i_int;
239 if( p_dec->fmt_in.i_codec == VLC_FOURCC('s','s','a',' ')
240 && var_CreateGetBool( p_dec, "subsdec-formatted" ) )
242 if( p_dec->fmt_in.i_extra > 0 )
243 ParseSSAHeader( p_dec );
249 /****************************************************************************
250 * DecodeBlock: the whole thing
251 ****************************************************************************
252 * This function must be fed with complete subtitles units.
253 ****************************************************************************/
254 static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
259 if( !pp_block || *pp_block == NULL )
263 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
265 block_Release( p_block );
269 p_spu = ParseText( p_dec, p_block );
271 block_Release( p_block );
277 /*****************************************************************************
278 * CloseDecoder: clean up the decoder
279 *****************************************************************************/
280 static void CloseDecoder( vlc_object_t *p_this )
282 decoder_t *p_dec = (decoder_t *)p_this;
283 decoder_sys_t *p_sys = p_dec->p_sys;
285 if( p_sys->iconv_handle != (vlc_iconv_t)-1 )
286 vlc_iconv_close( p_sys->iconv_handle );
288 if( p_sys->pp_ssa_styles )
291 for( i = 0; i < p_sys->i_ssa_styles; i++ )
293 if( !p_sys->pp_ssa_styles[i] )
296 free( p_sys->pp_ssa_styles[i]->psz_stylename );
297 free( p_sys->pp_ssa_styles[i]->font_style.psz_fontname );
298 free( p_sys->pp_ssa_styles[i] );
300 TAB_CLEAN( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
302 if( p_sys->pp_images )
305 for( i = 0; i < p_sys->i_images; i++ )
307 if( !p_sys->pp_images[i] )
310 if( p_sys->pp_images[i]->p_pic )
311 picture_Release( p_sys->pp_images[i]->p_pic );
312 free( p_sys->pp_images[i]->psz_filename );
314 free( p_sys->pp_images[i] );
316 TAB_CLEAN( p_sys->i_images, p_sys->pp_images );
322 /*****************************************************************************
323 * ParseText: parse an text subtitle packet and send it to the video output
324 *****************************************************************************/
325 static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block )
327 decoder_sys_t *p_sys = p_dec->p_sys;
328 subpicture_t *p_spu = NULL;
329 char *psz_subtitle = NULL;
332 /* We cannot display a subpicture with no date */
333 if( p_block->i_pts == 0 )
335 msg_Warn( p_dec, "subtitle without a date" );
339 /* Check validity of packet data */
340 /* An "empty" line containing only \0 can be used to force
341 and ephemer picture from the screen */
342 if( p_block->i_buffer < 1 )
344 msg_Warn( p_dec, "no subtitle data" );
348 /* Should be resiliant against bad subtitles */
349 psz_subtitle = strndup( (const char *)p_block->p_buffer,
351 if( psz_subtitle == NULL )
354 if( p_sys->iconv_handle == (vlc_iconv_t)-1 )
356 if (EnsureUTF8( psz_subtitle ) == NULL)
358 msg_Err( p_dec, "failed to convert subtitle encoding.\n"
359 "Try manually setting a character-encoding "
360 "before you open the file." );
366 if( p_sys->b_autodetect_utf8 )
368 if( IsUTF8( psz_subtitle ) == NULL )
370 msg_Dbg( p_dec, "invalid UTF-8 sequence: "
371 "disabling UTF-8 subtitles autodetection" );
372 p_sys->b_autodetect_utf8 = false;
376 if( !p_sys->b_autodetect_utf8 )
378 size_t inbytes_left = strlen( psz_subtitle );
379 size_t outbytes_left = 6 * inbytes_left;
380 char *psz_new_subtitle = malloc( outbytes_left + 1 );
381 char *psz_convert_buffer_out = psz_new_subtitle;
382 const char *psz_convert_buffer_in = psz_subtitle;
384 size_t ret = vlc_iconv( p_sys->iconv_handle,
385 &psz_convert_buffer_in, &inbytes_left,
386 &psz_convert_buffer_out, &outbytes_left );
388 *psz_convert_buffer_out++ = '\0';
389 free( psz_subtitle );
391 if( ( ret == (size_t)(-1) ) || inbytes_left )
393 free( psz_new_subtitle );
394 msg_Err( p_dec, "failed to convert subtitle encoding.\n"
395 "Try manually setting a character-encoding "
396 "before you open the file." );
400 psz_subtitle = realloc( psz_new_subtitle,
401 psz_convert_buffer_out - psz_new_subtitle );
405 /* Create the subpicture unit */
406 p_spu = decoder_NewSubpicture( p_dec );
409 msg_Warn( p_dec, "can't get spu buffer" );
410 free( psz_subtitle );
414 /* Create a new subpicture region */
415 memset( &fmt, 0, sizeof(video_format_t) );
416 fmt.i_chroma = VLC_FOURCC('T','E','X','T');
418 fmt.i_width = fmt.i_height = 0;
419 fmt.i_x_offset = fmt.i_y_offset = 0;
420 p_spu->p_region = subpicture_region_New( &fmt );
421 if( !p_spu->p_region )
423 msg_Err( p_dec, "cannot allocate SPU region" );
424 free( psz_subtitle );
425 decoder_DeleteSubpicture( p_dec, p_spu );
429 /* Decode and format the subpicture unit */
430 if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','s','a',' ') )
432 /* Normal text subs, easy markup */
433 p_spu->p_region->i_align = SUBPICTURE_ALIGN_BOTTOM | p_sys->i_align;
434 p_spu->p_region->i_x = p_sys->i_align ? 20 : 0;
435 p_spu->p_region->i_y = 10;
437 /* Remove formatting from string */
439 p_spu->p_region->psz_text = StripTags( psz_subtitle );
440 if( var_CreateGetBool( p_dec, "subsdec-formatted" ) )
442 p_spu->p_region->psz_html = CreateHtmlSubtitle( &p_spu->p_region->i_align, psz_subtitle );
445 p_spu->i_start = p_block->i_pts;
446 p_spu->i_stop = p_block->i_pts + p_block->i_length;
447 p_spu->b_ephemer = (p_block->i_length == 0);
448 p_spu->b_absolute = false;
452 /* Decode SSA/USF strings */
453 ParseSSAString( p_dec, psz_subtitle, p_spu );
455 p_spu->i_start = p_block->i_pts;
456 p_spu->i_stop = p_block->i_pts + p_block->i_length;
457 p_spu->b_ephemer = (p_block->i_length == 0);
458 p_spu->b_absolute = false;
459 p_spu->i_original_picture_width = p_sys->i_original_width;
460 p_spu->i_original_picture_height = p_sys->i_original_height;
462 free( psz_subtitle );
467 char* GotoNextLine( char *psz_text )
469 char *p_newline = psz_text;
471 while( p_newline[0] != '\0' )
473 if( p_newline[0] == '\n' || p_newline[0] == '\r' )
476 while( p_newline[0] == '\n' || p_newline[0] == '\r' )
485 /* Function now handles tags with attribute values, and tries
486 * to deal with &' commands too. It no longer modifies the string
487 * in place, so that the original text can be reused
489 static char *StripTags( char *psz_subtitle )
491 char *psz_text_start;
494 psz_text = psz_text_start = malloc( strlen( psz_subtitle ) + 1 );
495 if( !psz_text_start )
498 while( *psz_subtitle )
500 if( *psz_subtitle == '<' )
502 if( strncasecmp( psz_subtitle, "<br/>", 5 ) == 0 )
505 psz_subtitle += strcspn( psz_subtitle, ">" );
507 else if( *psz_subtitle == '&' )
509 if( !strncasecmp( psz_subtitle, "<", 4 ))
512 psz_subtitle += strcspn( psz_subtitle, ";" );
514 else if( !strncasecmp( psz_subtitle, ">", 4 ))
517 psz_subtitle += strcspn( psz_subtitle, ";" );
519 else if( !strncasecmp( psz_subtitle, "&", 5 ))
522 psz_subtitle += strcspn( psz_subtitle, ";" );
524 else if( !strncasecmp( psz_subtitle, """, 6 ))
527 psz_subtitle += strcspn( psz_subtitle, ";" );
531 /* Assume it is just a normal ampersand */
537 *psz_text++ = *psz_subtitle;
543 psz_text_start = realloc( psz_text_start, strlen( psz_text_start ) + 1 );
545 return psz_text_start;
548 /* Try to respect any style tags present in the subtitle string. The main
549 * problem here is a lack of adequate specs for the subtitle formats.
550 * SSA/ASS and USF are both detail spec'ed -- but they are handled elsewhere.
551 * SAMI has a detailed spec, but extensive rework is needed in the demux
552 * code to prevent all this style information being excised, as it presently
554 * That leaves the others - none of which were (I guess) originally intended
555 * to be carrying style information. Over time people have used them that way.
556 * In the absence of specifications from which to work, the tags supported
557 * have been restricted to the simple set permitted by the USF DTD, ie. :
558 * Basic: <br>, <i>, <b>, <u>
570 * There is also the further restriction that the subtitle be well-formed
571 * as an XML entity, ie. the HTML sentence:
572 * <b><i>Bold and Italics</b></i>
573 * doesn't qualify because the tags aren't nested one inside the other.
574 * <text> tags are automatically added to the output to ensure
576 * If the text doesn't qualify for any reason, a NULL string is
577 * returned, and the rendering engine will fall back to the
578 * plain text version of the subtitle.
580 static void HtmlNPut( char **ppsz_html, const char *psz_text, int i_max )
582 const int i_len = strlen(psz_text);
584 strncpy( *ppsz_html, psz_text, i_max );
585 *ppsz_html += __MIN(i_max,i_len);
588 static void HtmlPut( char **ppsz_html, const char *psz_text )
590 strcpy( *ppsz_html, psz_text );
591 *ppsz_html += strlen(psz_text);
593 static void HtmlCopy( char **ppsz_html, char **ppsz_subtitle, const char *psz_text )
595 HtmlPut( ppsz_html, psz_text );
596 *ppsz_subtitle += strlen(psz_text);
599 static char *CreateHtmlSubtitle( int *pi_align, char *psz_subtitle )
602 char *psz_tag = malloc( ( strlen( psz_subtitle ) / 3 ) + 1 );
608 size_t i_buf_size = strlen( psz_subtitle ) + 100;
609 char *psz_html_start = malloc( i_buf_size );
610 char *psz_html = psz_html_start;
611 if( psz_html_start == NULL )
618 bool b_has_align = false;
620 HtmlPut( &psz_html, "<text>" );
623 while( *psz_subtitle )
625 if( *psz_subtitle == '\n' )
627 HtmlPut( &psz_html, "<br/>" );
630 else if( *psz_subtitle == '<' )
632 if( !strncasecmp( psz_subtitle, "<br/>", 5 ))
634 HtmlCopy( &psz_html, &psz_subtitle, "<br/>" );
636 else if( !strncasecmp( psz_subtitle, "<b>", 3 ) )
638 HtmlCopy( &psz_html, &psz_subtitle, "<b>" );
639 strcat( psz_tag, "b" );
641 else if( !strncasecmp( psz_subtitle, "<i>", 3 ) )
643 HtmlCopy( &psz_html, &psz_subtitle, "<i>" );
644 strcat( psz_tag, "i" );
646 else if( !strncasecmp( psz_subtitle, "<u>", 3 ) )
648 HtmlCopy( &psz_html, &psz_subtitle, "<u>" );
649 strcat( psz_tag, "u" );
651 else if( !strncasecmp( psz_subtitle, "<font ", 6 ))
653 const char *psz_attribs[] = { "face=", "family=", "size=",
654 "color=", "outline-color=", "shadow-color=",
655 "outline-level=", "shadow-level=", "back-color=",
658 HtmlCopy( &psz_html, &psz_subtitle, "<font " );
659 strcat( psz_tag, "f" );
661 while( *psz_subtitle != '>' )
665 for( k=0; psz_attribs[ k ]; k++ )
667 int i_len = strlen( psz_attribs[ k ] );
669 if( !strncasecmp( psz_subtitle, psz_attribs[k], i_len ) )
672 HtmlPut( &psz_html, psz_attribs[k] );
673 psz_subtitle += i_len;
676 if( *psz_subtitle == '"' )
679 i_len = strcspn( psz_subtitle, "\"" );
683 i_len = strcspn( psz_subtitle, " \t>" );
685 HtmlPut( &psz_html, "\"" );
686 if( !strcmp( psz_attribs[ k ], "color=" ) && *psz_subtitle >= '0' && *psz_subtitle <= '9' )
687 HtmlPut( &psz_html, "#" );
688 HtmlNPut( &psz_html, psz_subtitle, i_len );
689 HtmlPut( &psz_html, "\"" );
691 psz_subtitle += i_len;
692 if( *psz_subtitle == '\"' )
697 if( psz_attribs[ k ] == NULL )
699 /* Jump over unrecognised tag */
700 int i_len = strcspn( psz_subtitle, "\"" ) + 1;
702 i_len += strcspn( psz_subtitle + i_len, "\"" ) + 1;
703 psz_subtitle += i_len;
705 while (*psz_subtitle == ' ')
706 *psz_html++ = *psz_subtitle++;
708 *psz_html++ = *psz_subtitle++;
710 else if( !strncmp( psz_subtitle, "</", 2 ))
712 bool b_match = false;
713 bool b_ignore = false;
714 int i_len = strlen( psz_tag ) - 1;
715 char *psz_lastTag = NULL;
719 psz_lastTag = psz_tag + i_len;
722 switch( *psz_lastTag )
725 b_match = !strncasecmp( psz_subtitle, "</b>", 4 );
729 b_match = !strncasecmp( psz_subtitle, "</i>", 4 );
733 b_match = !strncasecmp( psz_subtitle, "</u>", 4 );
737 b_match = !strncasecmp( psz_subtitle, "</font>", 7 );
741 i_len = strcspn( psz_subtitle, ">" );
742 b_match = psz_subtitle[i_len] == '>';
751 /* Not well formed -- kill everything */
752 free( psz_html_start );
753 psz_html_start = NULL;
758 HtmlNPut( &psz_html, psz_subtitle, i_len );
760 psz_subtitle += i_len;
762 else if( ( psz_subtitle[1] < 'a' || psz_subtitle[1] > 'z' ) &&
763 ( psz_subtitle[1] < 'A' || psz_subtitle[1] > 'Z' ) )
765 /* We have a single < */
766 HtmlPut( &psz_html, "<" );
771 /* We have an unknown tag or a single < */
773 /* Search for the next tag or end of tag or end of string */
774 char *psz_stop = psz_subtitle + 1 + strcspn( &psz_subtitle[1], "<>" );
775 char *psz_closing = strstr( psz_subtitle, "/>" );
777 if( psz_closing && psz_closing < psz_stop )
779 /* We have a self closed tag, remove it */
780 psz_subtitle = &psz_closing[2];
782 else if( *psz_stop == '>' )
786 snprintf( psz_match, sizeof(psz_match), "</%s", &psz_subtitle[1] );
787 psz_match[strcspn( psz_match, " \t>" )] = '\0';
789 if( strstr( psz_subtitle, psz_match ) )
791 /* We have the closing tag, ignore it TODO */
792 psz_subtitle = &psz_stop[1];
793 strcat( psz_tag, "I" );
797 int i_len = psz_stop + 1 - psz_subtitle;
799 /* Copy the whole data */
800 for( ; i_len > 0; i_len--, psz_subtitle++ )
802 if( *psz_subtitle == '<' )
803 HtmlPut( &psz_html, "<" );
804 else if( *psz_subtitle == '>' )
805 HtmlPut( &psz_html, ">" );
807 *psz_html++ = *psz_subtitle;
813 /* We have a single < */
814 HtmlPut( &psz_html, "<" );
819 else if( *psz_subtitle == '&' )
821 if( !strncasecmp( psz_subtitle, "<", 4 ))
823 HtmlCopy( &psz_html, &psz_subtitle, "<" );
825 else if( !strncasecmp( psz_subtitle, ">", 4 ))
827 HtmlCopy( &psz_html, &psz_subtitle, ">" );
829 else if( !strncasecmp( psz_subtitle, "&", 5 ))
831 HtmlCopy( &psz_html, &psz_subtitle, "&" );
835 HtmlPut( &psz_html, "&" );
839 else if( *psz_subtitle == '>' )
841 HtmlPut( &psz_html, ">" );
844 else if( psz_subtitle[0] == '{' && psz_subtitle[1] == '\\' &&
845 strchr( psz_subtitle, '}' ) )
847 /* Check for forced alignment */
849 !strncmp( psz_subtitle, "{\\an", 4 ) && psz_subtitle[4] >= '1' && psz_subtitle[4] <= '9' && psz_subtitle[5] == '}' )
851 static const int pi_vertical[3] = { SUBPICTURE_ALIGN_BOTTOM, 0, SUBPICTURE_ALIGN_TOP };
852 static const int pi_horizontal[3] = { SUBPICTURE_ALIGN_LEFT, 0, SUBPICTURE_ALIGN_RIGHT };
853 const int i_id = psz_subtitle[4] - '1';
856 *pi_align = pi_vertical[i_id/3] | pi_horizontal[i_id%3];
858 /* TODO fr -> rotation */
860 /* Hide {\stupidity} */
861 psz_subtitle = strchr( psz_subtitle, '}' ) + 1;
865 *psz_html = *psz_subtitle;
866 if( psz_html > psz_html_start )
868 /* Check for double whitespace */
869 if( ( *psz_html == ' ' || *psz_html == '\t' ) &&
870 ( *(psz_html-1) == ' ' || *(psz_html-1) == '\t' ) )
872 HtmlPut( &psz_html, NO_BREAKING_SPACE );
880 if( ( size_t )( psz_html - psz_html_start ) > i_buf_size - 50 )
882 const int i_len = psz_html - psz_html_start;
885 char *psz_new = realloc( psz_html_start, i_buf_size );
888 psz_html_start = psz_new;
889 psz_html = &psz_new[i_len];
894 static const char *psz_text_close = "</text>";
895 static const char *psz_tag_long = "/font>";
897 /* Realloc for closing tags and shrink memory */
898 const size_t i_length = (size_t)( psz_html - psz_html_start );
900 const size_t i_size = i_length + strlen(psz_tag_long) * strlen(psz_tag) + strlen(psz_text_close) + 1;
901 char *psz_new = realloc( psz_html_start, i_size );
904 psz_html_start = psz_new;
905 psz_html = &psz_new[i_length];
907 /* Close not well formed subtitle */
911 char *psz_last = &psz_tag[strlen(psz_tag)-1];
915 HtmlPut( &psz_html, "</b>" );
918 HtmlPut( &psz_html, "</i>" );
921 HtmlPut( &psz_html, "</u>" );
924 HtmlPut( &psz_html, "/font>" );
932 HtmlPut( &psz_html, psz_text_close );
937 return psz_html_start;