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
[] = {
97 static const char *const ppsz_encoding_names
[] = {
99 The character encoding name in parenthesis corresponds to that used for
100 the GetACP translation. "Windows-1252" applies to Western European
101 languages using the Latin alphabet. */
102 N_("Default (Windows-1252)"),
103 N_("System codeset"),
104 N_("Universal (UTF-8)"),
105 N_("Universal (UTF-16)"),
106 N_("Universal (big endian UTF-16)"),
107 N_("Universal (little endian UTF-16)"),
108 N_("Universal, Chinese (GB18030)"),
110 /* ISO 8859 and the likes */
112 N_("Western European (Latin-9)"), /* mostly superset of Latin-1 */
113 N_("Western European (Windows-1252)"),
115 N_("Eastern European (Latin-2)"),
116 N_("Eastern European (Windows-1250)"),
118 N_("Esperanto (Latin-3)"),
120 N_("Nordic (Latin-6)"), /* Latin 6 supersedes Latin 4 */
122 N_("Cyrillic (Windows-1251)"), /* ISO 8859-5 is not practically used */
123 N_("Russian (KOI8-R)"),
124 N_("Ukrainian (KOI8-U)"),
126 N_("Arabic (ISO 8859-6)"),
127 N_("Arabic (Windows-1256)"),
129 N_("Greek (ISO 8859-7)"),
130 N_("Greek (Windows-1253)"),
132 N_("Hebrew (ISO 8859-8)"),
133 N_("Hebrew (Windows-1255)"),
135 N_("Turkish (ISO 8859-9)"),
136 N_("Turkish (Windows-1254)"),
139 N_("Thai (TIS 620-2533/ISO 8859-11)"),
140 N_("Thai (Windows-874)"),
142 N_("Baltic (Latin-7)"),
143 N_("Baltic (Windows-1257)"),
144 /* 12 -> /dev/null */
146 N_("Celtic (Latin-8)"),
149 N_("South-Eastern European (Latin-10)"),
151 N_("Simplified Chinese (ISO-2022-CN-EXT)"),
152 N_("Simplified Chinese Unix (EUC-CN)"),
153 N_("Japanese (7-bits JIS/ISO-2022-JP-2)"),
154 N_("Japanese Unix (EUC-JP)"),
155 N_("Japanese (Shift JIS)"),
156 N_("Korean (EUC-KR/CP949)"),
157 N_("Korean (ISO-2022-KR)"),
158 N_("Traditional Chinese (Big5)"),
159 N_("Traditional Chinese Unix (EUC-TW)"),
160 N_("Hong-Kong Supplementary (HKSCS)"),
162 N_("Vietnamese (VISCII)"),
163 N_("Vietnamese (Windows-1258)"),
166 SSA supports charset selection.
167 The following known charsets are used:
169 0 = Ansi - Western European
174 128 = Japanese (Shift JIS)
177 134 = GB2312 Simplified Chinese
178 136 = Big5 Traditional Chinese
185 204 = Russian (Cyrillic)
187 238 = Eastern European
191 static const int pi_justification
[] = { 0, 1, 2 };
192 static const char *const ppsz_justification_text
[] = {
193 N_("Center"),N_("Left"),N_("Right")};
195 #define ENCODING_TEXT N_("Subtitles text encoding")
196 #define ENCODING_LONGTEXT N_("Set the encoding used in text subtitles")
197 #define ALIGN_TEXT N_("Subtitles justification")
198 #define ALIGN_LONGTEXT N_("Set the justification of subtitles")
199 #define AUTODETECT_UTF8_TEXT N_("UTF-8 subtitles autodetection")
200 #define AUTODETECT_UTF8_LONGTEXT N_("This enables automatic detection of " \
201 "UTF-8 encoding within subtitles files.")
202 #define FORMAT_TEXT N_("Formatted Subtitles")
203 #define FORMAT_LONGTEXT N_("Some subtitle formats allow for text formatting. " \
204 "VLC partly implements this, but you can choose to disable all formatting.")
208 set_shortname( N_("Subtitles"))
209 set_description( N_("Text subtitles decoder") )
210 set_capability( "decoder", 50 )
211 set_callbacks( OpenDecoder
, CloseDecoder
)
212 set_category( CAT_INPUT
)
213 set_subcategory( SUBCAT_INPUT_SCODEC
)
215 add_integer( "subsdec-align", 0, NULL
, ALIGN_TEXT
, ALIGN_LONGTEXT
,
217 change_integer_list( pi_justification
, ppsz_justification_text
)
218 add_string( "subsdec-encoding", "",
219 ENCODING_TEXT
, ENCODING_LONGTEXT
, false )
220 change_string_list( ppsz_encodings
, ppsz_encoding_names
, 0 )
221 add_bool( "subsdec-autodetect-utf8", true, NULL
,
222 AUTODETECT_UTF8_TEXT
, AUTODETECT_UTF8_LONGTEXT
, false )
223 add_bool( "subsdec-formatted", true, NULL
, FORMAT_TEXT
, FORMAT_LONGTEXT
,
227 /*****************************************************************************
228 * OpenDecoder: probe the decoder and return score
229 *****************************************************************************
230 * Tries to launch a decoder and return score so that the interface is able
232 *****************************************************************************/
233 static int OpenDecoder( vlc_object_t
*p_this
)
235 decoder_t
*p_dec
= (decoder_t
*)p_this
;
236 decoder_sys_t
*p_sys
;
238 switch( p_dec
->fmt_in
.i_codec
)
242 case VLC_CODEC_ITU_T140
:
248 p_dec
->pf_decode_sub
= DecodeBlock
;
249 p_dec
->fmt_out
.i_cat
= SPU_ES
;
250 p_dec
->fmt_out
.i_codec
= 0;
252 /* Allocate the memory needed to store the decoder's structure */
253 p_dec
->p_sys
= p_sys
= calloc( 1, sizeof( *p_sys
) );
259 p_sys
->iconv_handle
= (vlc_iconv_t
)-1;
260 p_sys
->b_autodetect_utf8
= false;
261 p_sys
->b_ass
= false;
262 p_sys
->i_original_height
= -1;
263 p_sys
->i_original_width
= -1;
264 TAB_INIT( p_sys
->i_ssa_styles
, p_sys
->pp_ssa_styles
);
265 TAB_INIT( p_sys
->i_images
, p_sys
->pp_images
);
267 char *psz_charset
= NULL
;
269 /* First try demux-specified encoding */
270 if( p_dec
->fmt_in
.i_codec
== VLC_CODEC_ITU_T140
)
271 psz_charset
= strdup( "UTF-8" ); /* IUT T.140 is always using UTF-8 */
273 if( p_dec
->fmt_in
.subs
.psz_encoding
&& *p_dec
->fmt_in
.subs
.psz_encoding
)
275 psz_charset
= strdup (p_dec
->fmt_in
.subs
.psz_encoding
);
276 msg_Dbg (p_dec
, "trying demuxer-specified character encoding: %s",
277 p_dec
->fmt_in
.subs
.psz_encoding
?
278 p_dec
->fmt_in
.subs
.psz_encoding
: "not specified");
281 /* Second, try configured encoding */
282 if (psz_charset
== NULL
)
284 psz_charset
= var_InheritString (p_dec
, "subsdec-encoding");
285 msg_Dbg (p_dec
, "trying configured character encoding: %s",
286 psz_charset
? psz_charset
: "not specified");
287 if (psz_charset
!= NULL
&& !strcmp (psz_charset
, "system"))
290 psz_charset
= strdup ("");
291 /* ^ iconv() treats "" as nl_langinfo(CODESET) */
295 /* Third, try "local" encoding with optional UTF-8 autodetection */
296 if (psz_charset
== NULL
)
299 The Windows ANSI code page most commonly used for this language.
300 VLC uses this as a guess of the subtitle files character set
301 (if UTF-8 and UTF-16 autodetection fails).
302 Western European languages normally use "CP1252", which is a
303 Microsoft-variant of ISO 8859-1. That suits the Latin alphabet.
304 Other scripts use other code pages.
306 This MUST be a valid iconv character set. If unsure, please refer
307 the VideoLAN translators mailing list. */
308 const char *acp
= vlc_pgettext("GetACP", "CP1252");
310 psz_charset
= strdup (acp
);
311 msg_Dbg (p_dec
, "trying default character encoding: %s",
312 psz_charset
? psz_charset
: "not specified");
314 if (var_InheritBool (p_dec
, "subsdec-autodetect-utf8"))
316 msg_Dbg (p_dec
, "using automatic UTF-8 detection");
317 p_sys
->b_autodetect_utf8
= true;
321 /* Forth, don't do character decoding, i.e. assume UTF-8 */
322 if (psz_charset
== NULL
)
324 psz_charset
= strdup ("UTF-8");
325 msg_Dbg (p_dec
, "using UTF-8 character encoding" );
328 if ((psz_charset
!= NULL
)
329 && strcasecmp (psz_charset
, "UTF-8")
330 && strcasecmp (psz_charset
, "utf8"))
332 p_sys
->iconv_handle
= vlc_iconv_open ("UTF-8", psz_charset
);
333 if (p_sys
->iconv_handle
== (vlc_iconv_t
)(-1))
334 msg_Err (p_dec
, "cannot convert from %s: %m", psz_charset
);
338 p_sys
->i_align
= var_InheritInteger( p_dec
, "subsdec-align" );
340 if( p_dec
->fmt_in
.i_codec
== VLC_CODEC_SSA
341 && var_InheritBool( p_dec
, "subsdec-formatted" ) )
343 if( p_dec
->fmt_in
.i_extra
> 0 )
344 ParseSSAHeader( p_dec
);
350 /****************************************************************************
351 * DecodeBlock: the whole thing
352 ****************************************************************************
353 * This function must be fed with complete subtitles units.
354 ****************************************************************************/
355 static subpicture_t
*DecodeBlock( decoder_t
*p_dec
, block_t
**pp_block
)
360 if( !pp_block
|| *pp_block
== NULL
)
364 if( p_block
->i_flags
& (BLOCK_FLAG_DISCONTINUITY
|BLOCK_FLAG_CORRUPTED
) )
366 block_Release( p_block
);
370 p_spu
= ParseText( p_dec
, p_block
);
372 block_Release( p_block
);
378 /*****************************************************************************
379 * CloseDecoder: clean up the decoder
380 *****************************************************************************/
381 static void CloseDecoder( vlc_object_t
*p_this
)
383 decoder_t
*p_dec
= (decoder_t
*)p_this
;
384 decoder_sys_t
*p_sys
= p_dec
->p_sys
;
386 if( p_sys
->iconv_handle
!= (vlc_iconv_t
)-1 )
387 vlc_iconv_close( p_sys
->iconv_handle
);
389 if( p_sys
->pp_ssa_styles
)
392 for( i
= 0; i
< p_sys
->i_ssa_styles
; i
++ )
394 if( !p_sys
->pp_ssa_styles
[i
] )
397 free( p_sys
->pp_ssa_styles
[i
]->psz_stylename
);
398 free( p_sys
->pp_ssa_styles
[i
]->font_style
.psz_fontname
);
399 free( p_sys
->pp_ssa_styles
[i
] );
401 TAB_CLEAN( p_sys
->i_ssa_styles
, p_sys
->pp_ssa_styles
);
403 if( p_sys
->pp_images
)
406 for( i
= 0; i
< p_sys
->i_images
; i
++ )
408 if( !p_sys
->pp_images
[i
] )
411 if( p_sys
->pp_images
[i
]->p_pic
)
412 picture_Release( p_sys
->pp_images
[i
]->p_pic
);
413 free( p_sys
->pp_images
[i
]->psz_filename
);
415 free( p_sys
->pp_images
[i
] );
417 TAB_CLEAN( p_sys
->i_images
, p_sys
->pp_images
);
423 /*****************************************************************************
424 * ParseText: parse an text subtitle packet and send it to the video output
425 *****************************************************************************/
426 static subpicture_t
*ParseText( decoder_t
*p_dec
, block_t
*p_block
)
428 decoder_sys_t
*p_sys
= p_dec
->p_sys
;
429 subpicture_t
*p_spu
= NULL
;
430 char *psz_subtitle
= NULL
;
433 /* We cannot display a subpicture with no date */
434 if( p_block
->i_pts
<= VLC_TS_INVALID
)
436 msg_Warn( p_dec
, "subtitle without a date" );
440 /* Check validity of packet data */
441 /* An "empty" line containing only \0 can be used to force
442 and ephemer picture from the screen */
443 if( p_block
->i_buffer
< 1 )
445 msg_Warn( p_dec
, "no subtitle data" );
449 /* Should be resiliant against bad subtitles */
450 psz_subtitle
= malloc( p_block
->i_buffer
+ 1 );
451 if( psz_subtitle
== NULL
)
453 memcpy( psz_subtitle
, p_block
->p_buffer
, p_block
->i_buffer
);
454 psz_subtitle
[p_block
->i_buffer
] = '\0';
456 if( p_sys
->iconv_handle
== (vlc_iconv_t
)-1 )
458 if (EnsureUTF8( psz_subtitle
) == NULL
)
460 msg_Err( p_dec
, "failed to convert subtitle encoding.\n"
461 "Try manually setting a character-encoding "
462 "before you open the file." );
468 if( p_sys
->b_autodetect_utf8
)
470 if( IsUTF8( psz_subtitle
) == NULL
)
472 msg_Dbg( p_dec
, "invalid UTF-8 sequence: "
473 "disabling UTF-8 subtitles autodetection" );
474 p_sys
->b_autodetect_utf8
= false;
478 if( !p_sys
->b_autodetect_utf8
)
480 size_t inbytes_left
= strlen( psz_subtitle
);
481 size_t outbytes_left
= 6 * inbytes_left
;
482 char *psz_new_subtitle
= xmalloc( outbytes_left
+ 1 );
483 char *psz_convert_buffer_out
= psz_new_subtitle
;
484 const char *psz_convert_buffer_in
= psz_subtitle
;
486 size_t ret
= vlc_iconv( p_sys
->iconv_handle
,
487 &psz_convert_buffer_in
, &inbytes_left
,
488 &psz_convert_buffer_out
, &outbytes_left
);
490 *psz_convert_buffer_out
++ = '\0';
491 free( psz_subtitle
);
493 if( ( ret
== (size_t)(-1) ) || inbytes_left
)
495 free( psz_new_subtitle
);
496 msg_Err( p_dec
, "failed to convert subtitle encoding.\n"
497 "Try manually setting a character-encoding "
498 "before you open the file." );
502 psz_subtitle
= realloc( psz_new_subtitle
,
503 psz_convert_buffer_out
- psz_new_subtitle
);
505 psz_subtitle
= psz_new_subtitle
;
509 /* Create the subpicture unit */
510 p_spu
= decoder_NewSubpicture( p_dec
, NULL
);
513 msg_Warn( p_dec
, "can't get spu buffer" );
514 free( psz_subtitle
);
518 /* Create a new subpicture region */
519 memset( &fmt
, 0, sizeof(video_format_t
) );
520 fmt
.i_chroma
= VLC_CODEC_TEXT
;
521 fmt
.i_width
= fmt
.i_height
= 0;
522 fmt
.i_x_offset
= fmt
.i_y_offset
= 0;
523 p_spu
->p_region
= subpicture_region_New( &fmt
);
524 if( !p_spu
->p_region
)
526 msg_Err( p_dec
, "cannot allocate SPU region" );
527 free( psz_subtitle
);
528 decoder_DeleteSubpicture( p_dec
, p_spu
);
532 /* Decode and format the subpicture unit */
533 if( p_dec
->fmt_in
.i_codec
!= VLC_CODEC_SSA
)
535 /* Normal text subs, easy markup */
536 p_spu
->p_region
->i_align
= SUBPICTURE_ALIGN_BOTTOM
| p_sys
->i_align
;
537 p_spu
->p_region
->i_x
= p_sys
->i_align
? 20 : 0;
538 p_spu
->p_region
->i_y
= 10;
540 /* Remove formatting from string */
542 p_spu
->p_region
->psz_text
= StripTags( psz_subtitle
);
543 if( var_InheritBool( p_dec
, "subsdec-formatted" ) )
545 p_spu
->p_region
->psz_html
= CreateHtmlSubtitle( &p_spu
->p_region
->i_align
, psz_subtitle
);
548 p_spu
->i_start
= p_block
->i_pts
;
549 p_spu
->i_stop
= p_block
->i_pts
+ p_block
->i_length
;
550 p_spu
->b_ephemer
= (p_block
->i_length
== 0);
551 p_spu
->b_absolute
= false;
555 /* Decode SSA/USF strings */
556 ParseSSAString( p_dec
, psz_subtitle
, p_spu
);
558 p_spu
->i_start
= p_block
->i_pts
;
559 p_spu
->i_stop
= p_block
->i_pts
+ p_block
->i_length
;
560 p_spu
->b_ephemer
= (p_block
->i_length
== 0);
561 p_spu
->b_absolute
= false;
562 p_spu
->i_original_picture_width
= p_sys
->i_original_width
;
563 p_spu
->i_original_picture_height
= p_sys
->i_original_height
;
565 free( psz_subtitle
);
570 char* GotoNextLine( char *psz_text
)
572 char *p_newline
= psz_text
;
574 while( p_newline
[0] != '\0' )
576 if( p_newline
[0] == '\n' || p_newline
[0] == '\r' )
579 while( p_newline
[0] == '\n' || p_newline
[0] == '\r' )
588 /* Function now handles tags with attribute values, and tries
589 * to deal with &' commands too. It no longer modifies the string
590 * in place, so that the original text can be reused
592 static char *StripTags( char *psz_subtitle
)
594 char *psz_text_start
;
597 psz_text
= psz_text_start
= malloc( strlen( psz_subtitle
) + 1 );
598 if( !psz_text_start
)
601 while( *psz_subtitle
)
603 if( *psz_subtitle
== '<' )
605 if( strncasecmp( psz_subtitle
, "<br/>", 5 ) == 0 )
608 psz_subtitle
+= strcspn( psz_subtitle
, ">" );
610 else if( *psz_subtitle
== '&' )
612 if( !strncasecmp( psz_subtitle
, "<", 4 ))
615 psz_subtitle
+= strcspn( psz_subtitle
, ";" );
617 else if( !strncasecmp( psz_subtitle
, ">", 4 ))
620 psz_subtitle
+= strcspn( psz_subtitle
, ";" );
622 else if( !strncasecmp( psz_subtitle
, "&", 5 ))
625 psz_subtitle
+= strcspn( psz_subtitle
, ";" );
627 else if( !strncasecmp( psz_subtitle
, """, 6 ))
630 psz_subtitle
+= strcspn( psz_subtitle
, ";" );
634 /* Assume it is just a normal ampersand */
640 *psz_text
++ = *psz_subtitle
;
646 char *psz
= realloc( psz_text_start
, strlen( psz_text_start
) + 1 );
647 if( psz
) psz_text_start
= psz
;
649 return psz_text_start
;
652 /* Try to respect any style tags present in the subtitle string. The main
653 * problem here is a lack of adequate specs for the subtitle formats.
654 * SSA/ASS and USF are both detail spec'ed -- but they are handled elsewhere.
655 * SAMI has a detailed spec, but extensive rework is needed in the demux
656 * code to prevent all this style information being excised, as it presently
658 * That leaves the others - none of which were (I guess) originally intended
659 * to be carrying style information. Over time people have used them that way.
660 * In the absence of specifications from which to work, the tags supported
661 * have been restricted to the simple set permitted by the USF DTD, ie. :
662 * Basic: <br>, <i>, <b>, <u>, <s>
674 * There is also the further restriction that the subtitle be well-formed
675 * as an XML entity, ie. the HTML sentence:
676 * <b><i>Bold and Italics</b></i>
677 * doesn't qualify because the tags aren't nested one inside the other.
678 * <text> tags are automatically added to the output to ensure
680 * If the text doesn't qualify for any reason, a NULL string is
681 * returned, and the rendering engine will fall back to the
682 * plain text version of the subtitle.
684 static void HtmlNPut( char **ppsz_html
, const char *psz_text
, int i_max
)
686 const int i_len
= strlen(psz_text
);
688 strncpy( *ppsz_html
, psz_text
, i_max
);
689 *ppsz_html
+= __MIN(i_max
,i_len
);
692 static void HtmlPut( char **ppsz_html
, const char *psz_text
)
694 strcpy( *ppsz_html
, psz_text
);
695 *ppsz_html
+= strlen(psz_text
);
697 static void HtmlCopy( char **ppsz_html
, char **ppsz_subtitle
, const char *psz_text
)
699 HtmlPut( ppsz_html
, psz_text
);
700 *ppsz_subtitle
+= strlen(psz_text
);
703 static char *CreateHtmlSubtitle( int *pi_align
, char *psz_subtitle
)
706 char *psz_tag
= malloc( ( strlen( psz_subtitle
) / 3 ) + 1 );
713 size_t i_buf_size
= strlen( psz_subtitle
) + 100;
714 char *psz_html_start
= malloc( i_buf_size
);
715 char *psz_html
= psz_html_start
;
716 if( psz_html_start
== NULL
)
723 bool b_has_align
= false;
725 HtmlPut( &psz_html
, "<text>" );
728 while( *psz_subtitle
)
730 if( *psz_subtitle
== '\n' )
732 HtmlPut( &psz_html
, "<br/>" );
735 else if( *psz_subtitle
== '<' )
737 if( !strncasecmp( psz_subtitle
, "<br/>", 5 ))
739 HtmlCopy( &psz_html
, &psz_subtitle
, "<br/>" );
741 else if( !strncasecmp( psz_subtitle
, "<b>", 3 ) )
743 HtmlCopy( &psz_html
, &psz_subtitle
, "<b>" );
744 strcat( psz_tag
, "b" );
746 else if( !strncasecmp( psz_subtitle
, "<i>", 3 ) )
748 HtmlCopy( &psz_html
, &psz_subtitle
, "<i>" );
749 strcat( psz_tag
, "i" );
751 else if( !strncasecmp( psz_subtitle
, "<u>", 3 ) )
753 HtmlCopy( &psz_html
, &psz_subtitle
, "<u>" );
754 strcat( psz_tag
, "u" );
756 else if( !strncasecmp( psz_subtitle
, "<s>", 3 ) )
758 HtmlCopy( &psz_html
, &psz_subtitle
, "<s>" );
759 strcat( psz_tag
, "s" );
761 else if( !strncasecmp( psz_subtitle
, "<font ", 6 ))
763 const char *psz_attribs
[] = { "face=", "family=", "size=",
764 "color=", "outline-color=", "shadow-color=",
765 "outline-level=", "shadow-level=", "back-color=",
768 HtmlCopy( &psz_html
, &psz_subtitle
, "<font " );
769 strcat( psz_tag
, "f" );
771 while( *psz_subtitle
!= '>' )
775 for( k
=0; psz_attribs
[ k
]; k
++ )
777 int i_len
= strlen( psz_attribs
[ k
] );
779 if( !strncasecmp( psz_subtitle
, psz_attribs
[k
], i_len
) )
782 HtmlPut( &psz_html
, psz_attribs
[k
] );
783 psz_subtitle
+= i_len
;
786 if( *psz_subtitle
== '"' )
789 i_len
= strcspn( psz_subtitle
, "\"" );
793 i_len
= strcspn( psz_subtitle
, " \t>" );
795 HtmlPut( &psz_html
, "\"" );
796 if( !strcmp( psz_attribs
[ k
], "color=" ) && *psz_subtitle
>= '0' && *psz_subtitle
<= '9' )
797 HtmlPut( &psz_html
, "#" );
798 HtmlNPut( &psz_html
, psz_subtitle
, i_len
);
799 HtmlPut( &psz_html
, "\"" );
801 psz_subtitle
+= i_len
;
802 if( *psz_subtitle
== '\"' )
807 if( psz_attribs
[ k
] == NULL
)
809 /* Jump over unrecognised tag */
810 int i_len
= strcspn( psz_subtitle
, "\"" );
811 if( psz_subtitle
[i_len
] == '\"' )
813 i_len
+= 1 + strcspn( &psz_subtitle
[i_len
+ 1], "\"" );
814 if( psz_subtitle
[i_len
] == '\"' )
817 psz_subtitle
+= i_len
;
819 while (*psz_subtitle
== ' ')
820 *psz_html
++ = *psz_subtitle
++;
822 *psz_html
++ = *psz_subtitle
++;
824 else if( !strncmp( psz_subtitle
, "</", 2 ))
826 bool b_match
= false;
827 bool b_ignore
= false;
828 int i_len
= strlen( psz_tag
) - 1;
829 char *psz_lastTag
= NULL
;
833 psz_lastTag
= psz_tag
+ i_len
;
836 switch( *psz_lastTag
)
839 b_match
= !strncasecmp( psz_subtitle
, "</b>", 4 );
843 b_match
= !strncasecmp( psz_subtitle
, "</i>", 4 );
847 b_match
= !strncasecmp( psz_subtitle
, "</u>", 4 );
851 b_match
= !strncasecmp( psz_subtitle
, "</s>", 4 );
855 b_match
= !strncasecmp( psz_subtitle
, "</font>", 7 );
859 i_len
= strcspn( psz_subtitle
, ">" );
860 b_match
= psz_subtitle
[i_len
] == '>';
869 /* Not well formed -- kill everything */
870 free( psz_html_start
);
871 psz_html_start
= NULL
;
876 HtmlNPut( &psz_html
, psz_subtitle
, i_len
);
878 psz_subtitle
+= i_len
;
880 else if( ( psz_subtitle
[1] < 'a' || psz_subtitle
[1] > 'z' ) &&
881 ( psz_subtitle
[1] < 'A' || psz_subtitle
[1] > 'Z' ) )
883 /* We have a single < */
884 HtmlPut( &psz_html
, "<" );
889 /* We have an unknown tag or a single < */
891 /* Search for the next tag or end of tag or end of string */
892 char *psz_stop
= psz_subtitle
+ 1 + strcspn( &psz_subtitle
[1], "<>" );
893 char *psz_closing
= strstr( psz_subtitle
, "/>" );
895 if( psz_closing
&& psz_closing
< psz_stop
)
897 /* We have a self closed tag, remove it */
898 psz_subtitle
= &psz_closing
[2];
900 else if( *psz_stop
== '>' )
904 snprintf( psz_match
, sizeof(psz_match
), "</%s", &psz_subtitle
[1] );
905 psz_match
[strcspn( psz_match
, " \t>" )] = '\0';
907 if( strstr( psz_subtitle
, psz_match
) )
909 /* We have the closing tag, ignore it TODO */
910 psz_subtitle
= &psz_stop
[1];
911 strcat( psz_tag
, "I" );
915 int i_len
= psz_stop
+ 1 - psz_subtitle
;
917 /* Copy the whole data */
918 for( ; i_len
> 0; i_len
--, psz_subtitle
++ )
920 if( *psz_subtitle
== '<' )
921 HtmlPut( &psz_html
, "<" );
922 else if( *psz_subtitle
== '>' )
923 HtmlPut( &psz_html
, ">" );
925 *psz_html
++ = *psz_subtitle
;
931 /* We have a single < */
932 HtmlPut( &psz_html
, "<" );
937 else if( *psz_subtitle
== '&' )
939 if( !strncasecmp( psz_subtitle
, "<", 4 ))
941 HtmlCopy( &psz_html
, &psz_subtitle
, "<" );
943 else if( !strncasecmp( psz_subtitle
, ">", 4 ))
945 HtmlCopy( &psz_html
, &psz_subtitle
, ">" );
947 else if( !strncasecmp( psz_subtitle
, "&", 5 ))
949 HtmlCopy( &psz_html
, &psz_subtitle
, "&" );
953 HtmlPut( &psz_html
, "&" );
957 else if( *psz_subtitle
== '>' )
959 HtmlPut( &psz_html
, ">" );
962 else if( psz_subtitle
[0] == '{' && psz_subtitle
[1] == '\\' &&
963 strchr( psz_subtitle
, '}' ) )
965 /* Check for forced alignment */
967 !strncmp( psz_subtitle
, "{\\an", 4 ) && psz_subtitle
[4] >= '1' && psz_subtitle
[4] <= '9' && psz_subtitle
[5] == '}' )
969 static const int pi_vertical
[3] = { SUBPICTURE_ALIGN_BOTTOM
, 0, SUBPICTURE_ALIGN_TOP
};
970 static const int pi_horizontal
[3] = { SUBPICTURE_ALIGN_LEFT
, 0, SUBPICTURE_ALIGN_RIGHT
};
971 const int i_id
= psz_subtitle
[4] - '1';
974 *pi_align
= pi_vertical
[i_id
/3] | pi_horizontal
[i_id
%3];
976 /* TODO fr -> rotation */
978 /* Hide {\stupidity} */
979 psz_subtitle
= strchr( psz_subtitle
, '}' ) + 1;
981 else if( psz_subtitle
[0] == '{' && psz_subtitle
[1] == 'Y'
982 && psz_subtitle
[2] == ':' && strchr( psz_subtitle
, '}' ) )
984 /* Hide {Y:stupidity} */
985 psz_subtitle
= strchr( psz_subtitle
, '}' ) + 1;
987 else if( psz_subtitle
[0] == '\\' && psz_subtitle
[1] )
989 if( psz_subtitle
[1] == 'N' || psz_subtitle
[1] == 'n' )
991 HtmlPut( &psz_html
, "<br/>" );
994 else if( psz_subtitle
[1] == 'h' )
996 /* Non breakable space */
997 HtmlPut( &psz_html
, NO_BREAKING_SPACE
);
1002 HtmlPut( &psz_html
, "\\" );
1008 *psz_html
= *psz_subtitle
;
1009 if( psz_html
> psz_html_start
)
1011 /* Check for double whitespace */
1012 if( ( *psz_html
== ' ' || *psz_html
== '\t' ) &&
1013 ( *(psz_html
-1) == ' ' || *(psz_html
-1) == '\t' ) )
1015 HtmlPut( &psz_html
, NO_BREAKING_SPACE
);
1023 if( ( size_t )( psz_html
- psz_html_start
) > i_buf_size
- 50 )
1025 const int i_len
= psz_html
- psz_html_start
;
1028 char *psz_new
= realloc( psz_html_start
, i_buf_size
);
1031 psz_html_start
= psz_new
;
1032 psz_html
= &psz_new
[i_len
];
1035 if( psz_html_start
)
1037 static const char *psz_text_close
= "</text>";
1038 static const char *psz_tag_long
= "/font>";
1040 /* Realloc for closing tags and shrink memory */
1041 const size_t i_length
= (size_t)( psz_html
- psz_html_start
);
1043 const size_t i_size
= i_length
+ strlen(psz_tag_long
) * strlen(psz_tag
) + strlen(psz_text_close
) + 1;
1044 char *psz_new
= realloc( psz_html_start
, i_size
);
1047 psz_html_start
= psz_new
;
1048 psz_html
= &psz_new
[i_length
];
1050 /* Close not well formed subtitle */
1054 char *psz_last
= &psz_tag
[strlen(psz_tag
)-1];
1058 HtmlPut( &psz_html
, "</b>" );
1061 HtmlPut( &psz_html
, "</i>" );
1064 HtmlPut( &psz_html
, "</u>" );
1067 HtmlPut( &psz_html
, "</s>" );
1070 HtmlPut( &psz_html
, "/font>" );
1078 HtmlPut( &psz_html
, psz_text_close
);
1083 return psz_html_start
;