X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=modules%2Fcodec%2Fsubsdec.c;h=1b4276e299a2a6668047231d29ac705ae93076ba;hb=e0e1f0fce33f18dd288151fb8a3ffa05e971d5c8;hp=e4d66b309b4da2f6a841093c2b7a0a4731e3c5e4;hpb=db7b0a56aa13250845c4721f3cabb72d975128d6;p=vlc diff --git a/modules/codec/subsdec.c b/modules/codec/subsdec.c index e4d66b309b..1b4276e299 100644 --- a/modules/codec/subsdec.c +++ b/modules/codec/subsdec.c @@ -1,173 +1,221 @@ /***************************************************************************** - * subsdec.c : text subtitles decoder + * subsdec.c : text subtitle decoder ***************************************************************************** - * Copyright (C) 2000-2006 the VideoLAN team + * Copyright (C) 2000-2006 VLC authors and VideoLAN * $Id$ * * Authors: Gildas Bazin * Samuel Hocevar * Derk-Jan Hartman - * Bernie Purcell + * Bernie Purcell * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ -#include -#include -#include +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif -#include -#include -#include -#include -#include +#include #include -#include - -typedef struct -{ - char * psz_stylename; /* The name of the style, no comma's allowed */ - text_style_t font_style; - int i_align; - int i_margin_h; - int i_margin_v; -} ssa_style_t; -/***************************************************************************** - * decoder_sys_t : decoder descriptor - *****************************************************************************/ -struct decoder_sys_t -{ - vlc_bool_t b_ass; /* The subs are ASS */ - int i_original_height; - int i_original_width; - int i_align; /* Subtitles alignment on the vout */ - vlc_iconv_t iconv_handle; /* handle to iconv instance */ - vlc_bool_t b_autodetect_utf8; +#include +#include +#include +#include - ssa_style_t **pp_ssa_styles; - int i_ssa_styles; -}; +#include "substext.h" /***************************************************************************** - * Local prototypes + * Module descriptor. *****************************************************************************/ -static int OpenDecoder ( vlc_object_t * ); -static void CloseDecoder ( vlc_object_t * ); +static const char *const ppsz_encodings[] = { + "", + "system", + "UTF-8", + "UTF-16", + "UTF-16BE", + "UTF-16LE", + "GB18030", + "ISO-8859-15", + "Windows-1252", + "IBM850", + "ISO-8859-2", + "Windows-1250", + "ISO-8859-3", + "ISO-8859-10", + "Windows-1251", + "KOI8-R", + "KOI8-U", + "ISO-8859-6", + "Windows-1256", + "ISO-8859-7", + "Windows-1253", + "ISO-8859-8", + "Windows-1255", + "ISO-8859-9", + "Windows-1254", + "ISO-8859-11", + "Windows-874", + "ISO-8859-13", + "Windows-1257", + "ISO-8859-14", + "ISO-8859-16", + "ISO-2022-CN-EXT", + "EUC-CN", + "ISO-2022-JP-2", + "EUC-JP", + "Shift_JIS", + "CP949", + "ISO-2022-KR", + "Big5", + "ISO-2022-TW", + "Big5-HKSCS", + "VISCII", + "Windows-1258", +}; -static subpicture_t *DecodeBlock ( decoder_t *, block_t ** ); -static subpicture_t *ParseText ( decoder_t *, block_t * ); -static void ParseSSAHeader ( decoder_t * ); -static void ParseUSFHeader ( decoder_t * ); -static void ParseUSFHeaderTags( decoder_sys_t *, xml_reader_t * ); -static void ParseSSAString ( decoder_t *, char *, subpicture_t * ); -static void ParseUSFString ( decoder_t *, char *, subpicture_t * ); -static void ParseColor ( decoder_t *, char *, int *, int * ); -static char *StripTags ( char * ); -static char *CreateHtmlSubtitle ( char * ); +static const char *const ppsz_encoding_names[] = { + /* xgettext: + The character encoding name in parenthesis corresponds to that used for + the GetACP translation. "Windows-1252" applies to Western European + languages using the Latin alphabet. */ + N_("Default (Windows-1252)"), + N_("System codeset"), + N_("Universal (UTF-8)"), + N_("Universal (UTF-16)"), + N_("Universal (big endian UTF-16)"), + N_("Universal (little endian UTF-16)"), + N_("Universal, Chinese (GB18030)"), + + /* ISO 8859 and the likes */ + /* 1 */ + N_("Western European (Latin-9)"), /* mostly superset of Latin-1 */ + N_("Western European (Windows-1252)"), + N_("Western European (IBM 00850)"), + /* 2 */ + N_("Eastern European (Latin-2)"), + N_("Eastern European (Windows-1250)"), + /* 3 */ + N_("Esperanto (Latin-3)"), + /* 4 */ + N_("Nordic (Latin-6)"), /* Latin 6 supersedes Latin 4 */ + /* 5 */ + N_("Cyrillic (Windows-1251)"), /* ISO 8859-5 is not practically used */ + N_("Russian (KOI8-R)"), + N_("Ukrainian (KOI8-U)"), + /* 6 */ + N_("Arabic (ISO 8859-6)"), + N_("Arabic (Windows-1256)"), + /* 7 */ + N_("Greek (ISO 8859-7)"), + N_("Greek (Windows-1253)"), + /* 8 */ + N_("Hebrew (ISO 8859-8)"), + N_("Hebrew (Windows-1255)"), + /* 9 */ + N_("Turkish (ISO 8859-9)"), + N_("Turkish (Windows-1254)"), + /* 10 -> 4 */ + /* 11 */ + N_("Thai (TIS 620-2533/ISO 8859-11)"), + N_("Thai (Windows-874)"), + /* 13 */ + N_("Baltic (Latin-7)"), + N_("Baltic (Windows-1257)"), + /* 12 -> /dev/null */ + /* 14 */ + N_("Celtic (Latin-8)"), + /* 15 -> 1 */ + /* 16 */ + N_("South-Eastern European (Latin-10)"), + /* CJK families */ + N_("Simplified Chinese (ISO-2022-CN-EXT)"), + N_("Simplified Chinese Unix (EUC-CN)"), + N_("Japanese (7-bits JIS/ISO-2022-JP-2)"), + N_("Japanese Unix (EUC-JP)"), + N_("Japanese (Shift JIS)"), + N_("Korean (EUC-KR/CP949)"), + N_("Korean (ISO-2022-KR)"), + N_("Traditional Chinese (Big5)"), + N_("Traditional Chinese Unix (EUC-TW)"), + N_("Hong-Kong Supplementary (HKSCS)"), + /* Other */ + N_("Vietnamese (VISCII)"), + N_("Vietnamese (Windows-1258)"), +}; -#define DEFAULT_NAME "Default" -#define MAX_LINE 8192 +static const int pi_justification[] = { 0, 1, 2 }; +static const char *const ppsz_justification_text[] = { + N_("Center"),N_("Left"),N_("Right")}; -/***************************************************************************** - * Module descriptor. - *****************************************************************************/ -static const char *ppsz_encodings[] = { DEFAULT_NAME, "ASCII", "UTF-8", "", - "ISO-8859-1", "CP1252", "MacRoman", "MacIceland","ISO-8859-15", "", - "ISO-8859-2", "CP1250", "MacCentralEurope", "MacCroatian", "MacRomania", "", - "ISO-8859-5", "CP1251", "MacCyrillic", "MacUkraine", "KOI8-R", "KOI8-U", "KOI8-RU", "", - "ISO-8859-6", "CP1256", "MacArabic", "", - "ISO-8859-7", "CP1253", "MacGreek", "", - "ISO-8859-8", "CP1255", "MacHebrew", "", - "ISO-8859-9", "CP1254", "MacTurkish", "", - "ISO-8859-13", "CP1257", "", - "ISO-2022-JP", "ISO-2022-JP-1", "ISO-2022-JP-2", "EUC-JP", "SHIFT_JIS", "", - "ISO-2022-CN", "ISO-2022-CN-EXT", "EUC-CN", "EUC-TW", "BIG5", "BIG5-HKSCS", "", - "ISO-2022-KR", "EUC-KR", "", - "MacThai", "KOI8-T", "", - "ISO-8859-3", "ISO-8859-4", "ISO-8859-10", "ISO-8859-14", "ISO-8859-16", "", - "CP850", "CP862", "CP866", "CP874", "CP932", "CP949", "CP950", "CP1133", "CP1258", "", - "Macintosh", "", - "UTF-7", "UTF-16", "UTF-16BE", "UTF-16LE", "UTF-32", "UTF-32BE", "UTF-32LE", - "C99", "JAVA", "UCS-2", "UCS-2BE", "UCS-2LE", "UCS-4", "UCS-4BE", "UCS-4LE", "", - "HZ", "GBK", "GB18030", "JOHAB", "ARMSCII-8", - "Georgian-Academy", "Georgian-PS", "TIS-620", "MuleLao-1", "VISCII", "TCVN", - "HPROMAN8", "NEXTSTEP" }; -/* -SSA supports charset selection. -The following known charsets are used: - -0 = Ansi - Western European -1 = default -2 = symbol -3 = invalid -77 = Mac -128 = Japanese (Shift JIS) -129 = Hangul -130 = Johab -134 = GB2312 Simplified Chinese -136 = Big5 Traditional Chinese -161 = Greek -162 = Turkish -163 = Vietnamese -177 = Hebrew -178 = Arabic -186 = Baltic -204 = Russian (Cyrillic) -222 = Thai -238 = Eastern European -254 = PC 437 -*/ - -static int pi_justification[] = { 0, 1, 2 }; -static const char *ppsz_justification_text[] = {N_("Center"),N_("Left"),N_("Right")}; - -#define ENCODING_TEXT N_("Subtitles text encoding") +#define ENCODING_TEXT N_("Subtitle text encoding") #define ENCODING_LONGTEXT N_("Set the encoding used in text subtitles") -#define ALIGN_TEXT N_("Subtitles justification") +#define ALIGN_TEXT N_("Subtitle justification") #define ALIGN_LONGTEXT N_("Set the justification of subtitles") -#define AUTODETECT_UTF8_TEXT N_("UTF-8 subtitles autodetection") +#define AUTODETECT_UTF8_TEXT N_("UTF-8 subtitle autodetection") #define AUTODETECT_UTF8_LONGTEXT N_("This enables automatic detection of " \ - "UTF-8 encoding within subtitles files.") + "UTF-8 encoding within subtitle files.") #define FORMAT_TEXT N_("Formatted Subtitles") #define FORMAT_LONGTEXT N_("Some subtitle formats allow for text formatting. " \ "VLC partly implements this, but you can choose to disable all formatting.") +static int OpenDecoder ( vlc_object_t * ); +static void CloseDecoder ( vlc_object_t * ); + +vlc_module_begin () + set_shortname( N_("Subtitles")) + set_description( N_("Text subtitle decoder") ) + set_capability( "decoder", 50 ) + set_callbacks( OpenDecoder, CloseDecoder ) + set_category( CAT_INPUT ) + set_subcategory( SUBCAT_INPUT_SCODEC ) + + add_integer( "subsdec-align", 0, ALIGN_TEXT, ALIGN_LONGTEXT, + false ) + change_integer_list( pi_justification, ppsz_justification_text ) + add_string( "subsdec-encoding", "", + ENCODING_TEXT, ENCODING_LONGTEXT, false ) + change_string_list( ppsz_encodings, ppsz_encoding_names ) + add_bool( "subsdec-autodetect-utf8", true, + AUTODETECT_UTF8_TEXT, AUTODETECT_UTF8_LONGTEXT, false ) + add_bool( "subsdec-formatted", true, FORMAT_TEXT, FORMAT_LONGTEXT, + false ) +vlc_module_end () + +/***************************************************************************** + * Local prototypes + *****************************************************************************/ +#define NO_BREAKING_SPACE " " + +struct decoder_sys_t +{ + int i_align; /* Subtitles alignment on the vout */ + + vlc_iconv_t iconv_handle; /* handle to iconv instance */ + bool b_autodetect_utf8; +}; -vlc_module_begin(); - set_shortname( _("Subtitles")); - set_description( _("Text subtitles decoder") ); - set_capability( "decoder", 50 ); - set_callbacks( OpenDecoder, CloseDecoder ); - set_category( CAT_INPUT ); - set_subcategory( SUBCAT_INPUT_SCODEC ); - - add_integer( "subsdec-align", 0, NULL, ALIGN_TEXT, ALIGN_LONGTEXT, - VLC_FALSE ); - change_integer_list( pi_justification, ppsz_justification_text, 0 ); - add_string( "subsdec-encoding", DEFAULT_NAME, NULL, - ENCODING_TEXT, ENCODING_LONGTEXT, VLC_FALSE ); - change_string_list( ppsz_encodings, 0, 0 ); - add_bool( "subsdec-autodetect-utf8", VLC_TRUE, NULL, - AUTODETECT_UTF8_TEXT, AUTODETECT_UTF8_LONGTEXT, VLC_FALSE ); - add_bool( "subsdec-formatted", VLC_TRUE, NULL, FORMAT_TEXT, FORMAT_LONGTEXT, - VLC_FALSE ); -vlc_module_end(); + +static subpicture_t *DecodeBlock ( decoder_t *, block_t ** ); +static subpicture_t *ParseText ( decoder_t *, block_t * ); +static char *StripTags ( char * ); +static char *CreateHtmlSubtitle( int *pi_align, char * ); /***************************************************************************** * OpenDecoder: probe the decoder and return score @@ -179,108 +227,94 @@ static int OpenDecoder( vlc_object_t *p_this ) { decoder_t *p_dec = (decoder_t*)p_this; decoder_sys_t *p_sys; - vlc_value_t val; - if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','u','b','t') && - p_dec->fmt_in.i_codec != VLC_FOURCC('u','s','f',' ') && - p_dec->fmt_in.i_codec != VLC_FOURCC('s','s','a',' ') ) + switch( p_dec->fmt_in.i_codec ) { - return VLC_EGENERIC; + case VLC_CODEC_SUBT: + case VLC_CODEC_ITU_T140: + break; + default: + return VLC_EGENERIC; } p_dec->pf_decode_sub = DecodeBlock; + p_dec->fmt_out.i_cat = SPU_ES; + p_dec->fmt_out.i_codec = 0; /* Allocate the memory needed to store the decoder's structure */ - if( ( p_dec->p_sys = p_sys = - (decoder_sys_t *)calloc(1, sizeof(decoder_sys_t)) ) == NULL ) - { - msg_Err( p_dec, "out of memory" ); + p_dec->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) ); + if( p_sys == NULL ) return VLC_ENOMEM; - } /* init of p_sys */ p_sys->i_align = 0; p_sys->iconv_handle = (vlc_iconv_t)-1; - p_sys->b_autodetect_utf8 = VLC_FALSE; - p_sys->b_ass = VLC_FALSE; - p_sys->i_original_height = -1; - p_sys->i_original_width = -1; - p_sys->pp_ssa_styles = NULL; - p_sys->i_ssa_styles = 0; - - char *psz_charset = NULL; + p_sys->b_autodetect_utf8 = false; + + const char *encoding; + char *var = NULL; + /* First try demux-specified encoding */ + if( p_dec->fmt_in.i_codec == VLC_CODEC_ITU_T140 ) + encoding = "UTF-8"; /* IUT T.140 is always using UTF-8 */ + else if( p_dec->fmt_in.subs.psz_encoding && *p_dec->fmt_in.subs.psz_encoding ) { - psz_charset = strdup (p_dec->fmt_in.subs.psz_encoding); + encoding = p_dec->fmt_in.subs.psz_encoding; msg_Dbg (p_dec, "trying demuxer-specified character encoding: %s", - p_dec->fmt_in.subs.psz_encoding ?: "not specified"); + encoding); } - - /* Second, try configured encoding */ - if (psz_charset == NULL) + else { - psz_charset = var_CreateGetNonEmptyString (p_dec, "subsdec-encoding"); - if ((psz_charset != NULL) && !strcasecmp (psz_charset, DEFAULT_NAME)) + /* Second, try configured encoding */ + if ((var = var_InheritString (p_dec, "subsdec-encoding")) != NULL) { - free (psz_charset); - psz_charset = NULL; + msg_Dbg (p_dec, "trying configured character encoding: %s", var); + if (!strcmp (var, "system")) + { + free (var); + var = NULL; + encoding = ""; + /* ^ iconv() treats "" as nl_langinfo(CODESET) */ + } + else + encoding = var; + } + else + /* Third, try "local" encoding */ + { + /* xgettext: + The Windows ANSI code page most commonly used for this language. + VLC uses this as a guess of the subtitle files character set + (if UTF-8 and UTF-16 autodetection fails). + Western European languages normally use "CP1252", which is a + Microsoft-variant of ISO 8859-1. That suits the Latin alphabet. + Other scripts use other code pages. + + This MUST be a valid iconv character set. If unsure, please refer + the VideoLAN translators mailing list. */ + encoding = vlc_pgettext("GetACP", "CP1252"); + msg_Dbg (p_dec, "trying default character encoding: %s", encoding); } - msg_Dbg (p_dec, "trying configured character encoding: %s", - psz_charset ?: "not specified"); - } - - /* Third, try "local" encoding with optional UTF-8 autodetection */ - if (psz_charset == NULL) - { - psz_charset = strdup (GetFallbackEncoding ()); - msg_Dbg (p_dec, "trying default character encoding: %s", - psz_charset ?: "not specified"); - - if (var_CreateGetBool (p_dec, "subsdec-autodetect-utf8")) + /* Check UTF-8 autodetection */ + if (var_InheritBool (p_dec, "subsdec-autodetect-utf8")) { msg_Dbg (p_dec, "using automatic UTF-8 detection"); - p_sys->b_autodetect_utf8 = VLC_TRUE; + p_sys->b_autodetect_utf8 = true; } } - if (psz_charset == NULL) - { - psz_charset = strdup ("UTF-8"); - msg_Dbg (p_dec, "trying hard-coded character encoding: %s", - psz_charset ?: "error"); - } - - if (psz_charset == NULL) - { - free (p_sys); - return VLC_ENOMEM; - } - - if (strcasecmp (psz_charset, "UTF-8") && strcasecmp (psz_charset, "utf8")) + if (strcasecmp (encoding, "UTF-8") && strcasecmp (encoding, "utf8")) { - p_sys->iconv_handle = vlc_iconv_open ("UTF-8", psz_charset); + p_sys->iconv_handle = vlc_iconv_open ("UTF-8", encoding); if (p_sys->iconv_handle == (vlc_iconv_t)(-1)) - msg_Err (p_dec, "cannot convert from %s: %s", psz_charset, - strerror (errno)); + msg_Err (p_dec, "cannot convert from %s: %s", encoding, + vlc_strerror_c(errno)); } - free (psz_charset); + free (var); - var_Create( p_dec, "subsdec-align", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT ); - var_Get( p_dec, "subsdec-align", &val ); - p_sys->i_align = val.i_int; - - if( p_dec->fmt_in.i_codec == VLC_FOURCC('s','s','a',' ') && var_CreateGetBool( p_dec, "subsdec-formatted" ) ) - { - if( p_dec->fmt_in.i_extra > 0 ) - ParseSSAHeader( p_dec ); - } - else if( p_dec->fmt_in.i_codec == VLC_FOURCC('u','s','f',' ') && var_CreateGetBool( p_dec, "subsdec-formatted" ) ) - { - if( p_dec->fmt_in.i_extra > 0 ) - ParseUSFHeader( p_dec ); - } + p_sys->i_align = var_InheritInteger( p_dec, "subsdec-align" ); return VLC_SUCCESS; } @@ -292,13 +326,22 @@ static int OpenDecoder( vlc_object_t *p_this ) ****************************************************************************/ static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block ) { - subpicture_t *p_spu = NULL; + subpicture_t *p_spu; + block_t *p_block; - if( !pp_block || *pp_block == NULL ) return NULL; + if( !pp_block || *pp_block == NULL ) + return NULL; - p_spu = ParseText( p_dec, *pp_block ); + p_block = *pp_block; + if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) ) + { + block_Release( p_block ); + return NULL; + } - block_Release( *pp_block ); + p_spu = ParseText( p_dec, p_block ); + + block_Release( p_block ); *pp_block = NULL; return p_spu; @@ -313,23 +356,7 @@ static void CloseDecoder( vlc_object_t *p_this ) decoder_sys_t *p_sys = p_dec->p_sys; if( p_sys->iconv_handle != (vlc_iconv_t)-1 ) - { vlc_iconv_close( p_sys->iconv_handle ); - } - - if( p_sys->pp_ssa_styles ) - { - int i; - for( i = 0; i < p_sys->i_ssa_styles; i++ ) - { - if( p_sys->pp_ssa_styles[i]->psz_stylename ) free( p_sys->pp_ssa_styles[i]->psz_stylename ); - p_sys->pp_ssa_styles[i]->psz_stylename = NULL; - if( p_sys->pp_ssa_styles[i]->font_style.psz_fontname ) free( p_sys->pp_ssa_styles[i]->font_style.psz_fontname ); - p_sys->pp_ssa_styles[i]->font_style.psz_fontname = NULL; - if( p_sys->pp_ssa_styles[i] ) free( p_sys->pp_ssa_styles[i] ); p_sys->pp_ssa_styles[i] = NULL; - } - free( p_sys->pp_ssa_styles ); p_sys->pp_ssa_styles = NULL; - } free( p_sys ); } @@ -342,10 +369,9 @@ static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block ) decoder_sys_t *p_sys = p_dec->p_sys; subpicture_t *p_spu = NULL; char *psz_subtitle = NULL; - video_format_t fmt; /* We cannot display a subpicture with no date */ - if( p_block->i_pts == 0 ) + if( p_block->i_pts <= VLC_TS_INVALID ) { msg_Warn( p_dec, "subtitle without a date" ); return NULL; @@ -361,18 +387,19 @@ static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block ) } /* Should be resiliant against bad subtitles */ - psz_subtitle = strndup( (const char *)p_block->p_buffer, - p_block->i_buffer ); + psz_subtitle = malloc( p_block->i_buffer + 1 ); if( psz_subtitle == NULL ) return NULL; + memcpy( psz_subtitle, p_block->p_buffer, p_block->i_buffer ); + psz_subtitle[p_block->i_buffer] = '\0'; if( p_sys->iconv_handle == (vlc_iconv_t)-1 ) { if (EnsureUTF8( psz_subtitle ) == NULL) { - msg_Err( p_dec, _("failed to convert subtitle encoding.\n" + msg_Err( p_dec, "failed to convert subtitle encoding.\n" "Try manually setting a character-encoding " - "before you open the file.") ); + "before you open the file." ); } } else @@ -384,7 +411,7 @@ static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block ) { msg_Dbg( p_dec, "invalid UTF-8 sequence: " "disabling UTF-8 subtitles autodetection" ); - p_sys->b_autodetect_utf8 = VLC_FALSE; + p_sys->b_autodetect_utf8 = false; } } @@ -392,7 +419,7 @@ static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block ) { size_t inbytes_left = strlen( psz_subtitle ); size_t outbytes_left = 6 * inbytes_left; - char *psz_new_subtitle = malloc( outbytes_left + 1 ); + char *psz_new_subtitle = xmalloc( outbytes_left + 1 ); char *psz_convert_buffer_out = psz_new_subtitle; const char *psz_convert_buffer_in = psz_subtitle; @@ -406,1055 +433,559 @@ static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block ) if( ( ret == (size_t)(-1) ) || inbytes_left ) { free( psz_new_subtitle ); - msg_Err( p_dec, _("failed to convert subtitle encoding.\n" + msg_Err( p_dec, "failed to convert subtitle encoding.\n" "Try manually setting a character-encoding " - "before you open the file.") ); + "before you open the file." ); return NULL; } psz_subtitle = realloc( psz_new_subtitle, psz_convert_buffer_out - psz_new_subtitle ); + if( !psz_subtitle ) + psz_subtitle = psz_new_subtitle; } } /* Create the subpicture unit */ - p_spu = p_dec->pf_spu_buffer_new( p_dec ); + p_spu = decoder_NewSubpictureText( p_dec ); if( !p_spu ) { - msg_Warn( p_dec, "can't get spu buffer" ); - if( psz_subtitle ) free( psz_subtitle ); + free( psz_subtitle ); return NULL; } + p_spu->i_start = p_block->i_pts; + p_spu->i_stop = p_block->i_pts + p_block->i_length; + p_spu->b_ephemer = (p_block->i_length == 0); + p_spu->b_absolute = false; - p_spu->b_pausable = VLC_TRUE; + subpicture_updater_sys_t *p_spu_sys = p_spu->updater.p_sys; - /* Create a new subpicture region */ - memset( &fmt, 0, sizeof(video_format_t) ); - fmt.i_chroma = VLC_FOURCC('T','E','X','T'); - fmt.i_aspect = 0; - fmt.i_width = fmt.i_height = 0; - fmt.i_x_offset = fmt.i_y_offset = 0; - p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_dec), &fmt ); - if( !p_spu->p_region ) - { - msg_Err( p_dec, "cannot allocate SPU region" ); - if( psz_subtitle ) free( psz_subtitle ); - p_dec->pf_spu_buffer_del( p_dec, p_spu ); - return NULL; - } + p_spu_sys->align = SUBPICTURE_ALIGN_BOTTOM | p_sys->i_align; + p_spu_sys->text = StripTags( psz_subtitle ); + if( var_InheritBool( p_dec, "subsdec-formatted" ) ) + p_spu_sys->html = CreateHtmlSubtitle( &p_spu_sys->align, psz_subtitle ); - /* Decode and format the subpicture unit */ - if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','s','a',' ') && - p_dec->fmt_in.i_codec != VLC_FOURCC('u','s','f',' ') ) - { - /* Normal text subs, easy markup */ - p_spu->i_flags = SUBPICTURE_ALIGN_BOTTOM | p_sys->i_align; - p_spu->i_x = p_sys->i_align ? 20 : 0; - p_spu->i_y = 10; - - /* Remove formatting from string */ - - p_spu->p_region->psz_text = StripTags( psz_subtitle ); - p_spu->p_region->psz_html = CreateHtmlSubtitle( psz_subtitle ); - - p_spu->i_start = p_block->i_pts; - p_spu->i_stop = p_block->i_pts + p_block->i_length; - p_spu->b_ephemer = (p_block->i_length == 0); - p_spu->b_absolute = VLC_FALSE; - } - else - { - /* Decode SSA/USF strings */ - if( p_dec->fmt_in.i_codec == VLC_FOURCC('s','s','a',' ') ) - ParseSSAString( p_dec, psz_subtitle, p_spu ); - else - ParseUSFString( p_dec, psz_subtitle, p_spu ); - - p_spu->i_start = p_block->i_pts; - p_spu->i_stop = p_block->i_pts + p_block->i_length; - p_spu->b_ephemer = (p_block->i_length == 0); - p_spu->b_absolute = VLC_FALSE; - p_spu->i_original_picture_width = p_sys->i_original_width; - p_spu->i_original_picture_height = p_sys->i_original_height; - } - if( psz_subtitle ) free( psz_subtitle ); + free( psz_subtitle ); return p_spu; } -static void ParseUSFString( decoder_t *p_dec, char *psz_subtitle, subpicture_t *p_spu_in ) +/* Function now handles tags with attribute values, and tries + * to deal with &' commands too. It no longer modifies the string + * in place, so that the original text can be reused + */ +static char *StripTags( char *psz_subtitle ) { - decoder_sys_t *p_sys = p_dec->p_sys; - subpicture_t *p_spu = p_spu_in; - char *psz_text; - char *psz_text_start; - ssa_style_t *p_style = NULL; - int i; - - /* Create a text only copy of the subtitle (for legacy implementations) and copy - * the rich html version across as is - for parsing by a rendering engine capable - * of understanding it. - */ - p_spu->p_region->psz_text = NULL; - p_spu->p_region->psz_html = strdup( psz_subtitle ); - - for( i = 0; i < p_sys->i_ssa_styles; i++ ) - { - if( !strcasecmp( p_sys->pp_ssa_styles[i]->psz_stylename, "Default" ) ) - p_style = p_sys->pp_ssa_styles[i]; - } + char *psz_text_start; + char *psz_text; - /* The StripTags() function doesn't do everything we need (eg.
tag ) - * so do it here ourselves. - */ - psz_text_start = malloc( strlen( psz_subtitle )); + psz_text = psz_text_start = malloc( strlen( psz_subtitle ) + 1 ); + if( !psz_text_start ) + return NULL; - psz_text = psz_text_start; while( *psz_subtitle ) { if( *psz_subtitle == '<' ) { - if( !strncasecmp( psz_subtitle, "
", 5 )) + if( strncasecmp( psz_subtitle, "
", 5 ) == 0 ) *psz_text++ = '\n'; - else if( !strncasecmp( psz_subtitle, "' ) )) - { - int i_len; - - psz_style += strspn( psz_style, "\"" ) + 1; - i_len = strcspn( psz_style, "\"" ); - psz_style[ i_len ] = '\0'; - - for( i = 0; i < p_sys->i_ssa_styles; i++ ) - { - if( !strcmp( p_sys->pp_ssa_styles[i]->psz_stylename, psz_style ) ) - p_style = p_sys->pp_ssa_styles[i]; - } - - psz_style[ i_len ] = '\"'; - } - } - psz_subtitle += strcspn( psz_subtitle, ">" ); } else if( *psz_subtitle == '&' ) { if( !strncasecmp( psz_subtitle, "<", 4 )) + { *psz_text++ = '<'; + psz_subtitle += strcspn( psz_subtitle, ";" ); + } else if( !strncasecmp( psz_subtitle, ">", 4 )) + { *psz_text++ = '>'; + psz_subtitle += strcspn( psz_subtitle, ";" ); + } else if( !strncasecmp( psz_subtitle, "&", 5 )) + { *psz_text++ = '&'; - - psz_subtitle += strcspn( psz_subtitle, ";" ); - } - else if( ( *psz_subtitle == '\t' ) || - ( *psz_subtitle == '\r' ) || - ( *psz_subtitle == '\n' ) || - ( *psz_subtitle == ' ' ) ) - { - if( ( psz_text_start < psz_text ) && - ( *(psz_text-1) != ' ' ) ) + psz_subtitle += strcspn( psz_subtitle, ";" ); + } + else if( !strncasecmp( psz_subtitle, """, 6 )) { - *psz_text++ = ' '; + *psz_text++ = '\"'; + psz_subtitle += strcspn( psz_subtitle, ";" ); + } + else + { + /* Assume it is just a normal ampersand */ + *psz_text++ = '&'; } } else + { *psz_text++ = *psz_subtitle; + } + + /* Security fix: Account for the case where input ends early */ + if( *psz_subtitle == '\0' ) break; psz_subtitle++; } *psz_text = '\0'; - p_spu->p_region->psz_text = strdup( psz_text_start ); - free( psz_text_start ); + char *psz = realloc( psz_text_start, strlen( psz_text_start ) + 1 ); + if( psz ) psz_text_start = psz; - if( p_style == NULL ) - { - p_spu->i_flags = SUBPICTURE_ALIGN_BOTTOM | p_sys->i_align; - p_spu->i_x = p_sys->i_align ? 20 : 0; - p_spu->i_y = 10; - } - else - { - msg_Dbg( p_dec, "style is: %s", p_style->psz_stylename); - p_spu->p_region->p_style = &p_style->font_style; - p_spu->i_flags = p_style->i_align; - } + return psz_text_start; } -static void ParseSSAString( decoder_t *p_dec, char *psz_subtitle, subpicture_t *p_spu_in ) +/* Try to respect any style tags present in the subtitle string. The main + * problem here is a lack of adequate specs for the subtitle formats. + * SSA/ASS and USF are both detail spec'ed -- but they are handled elsewhere. + * SAMI has a detailed spec, but extensive rework is needed in the demux + * code to prevent all this style information being excised, as it presently + * does. + * That leaves the others - none of which were (I guess) originally intended + * to be carrying style information. Over time people have used them that way. + * In the absence of specifications from which to work, the tags supported + * have been restricted to the simple set permitted by the USF DTD, ie. : + * Basic:
, , , , + * Extended: + * Attributes: face + * family + * size + * color + * outline-color + * shadow-color + * outline-level + * shadow-level + * back-color + * alpha + * There is also the further restriction that the subtitle be well-formed + * as an XML entity, ie. the HTML sentence: + * Bold and Italics + * doesn't qualify because the tags aren't nested one inside the other. + * tags are automatically added to the output to ensure + * well-formedness. + * If the text doesn't qualify for any reason, a NULL string is + * returned, and the rendering engine will fall back to the + * plain text version of the subtitle. + */ +/* TODO: highly suboptimal, offset should be cached */ +static void HtmlNPut( char **ppsz_html, const char *psz_text, int i_max ) { - /* We expect MKV formatted SSA: - * ReadOrder, Layer, Style, CharacterName, MarginL, MarginR, - * MarginV, Effect, Text */ - decoder_sys_t *p_sys = p_dec->p_sys; - subpicture_t *p_spu = p_spu_in; - ssa_style_t *p_style = NULL; - char *psz_new_subtitle = NULL; - char *psz_buffer_sub = NULL; - char *psz_style = NULL; - char *psz_style_start = NULL; - char *psz_style_end = NULL; - int i_text = 0, i_comma = 0, i_strlen = 0, i; - int i_margin_l = 0, i_margin_r = 0, i_margin_v = 0; - - psz_buffer_sub = psz_subtitle; - - p_spu->p_region->psz_html = NULL; - - i_comma = 0; - while( i_comma < 8 && *psz_buffer_sub != '\0' ) - { - if( *psz_buffer_sub == ',' ) - { - i_comma++; - if( i_comma == 2 ) psz_style_start = &psz_buffer_sub[1]; - if( i_comma == 3 ) psz_style_end = &psz_buffer_sub[0]; - if( i_comma == 4 ) i_margin_l = (int)strtol( psz_buffer_sub+1, NULL, 10 ); - if( i_comma == 5 ) i_margin_r = (int)strtol( psz_buffer_sub+1, NULL, 10 ); - if( i_comma == 6 ) i_margin_v = (int)strtol( psz_buffer_sub+1, NULL, 10 ); - } - psz_buffer_sub++; - } - - if( *psz_buffer_sub == '\0' && i_comma == 8 ) - { - msg_Dbg( p_dec, "couldn't find all fields in this SSA line" ); + char *psz_html = *ppsz_html; + if( psz_html == NULL ) return; - } - - psz_new_subtitle = malloc( strlen( psz_buffer_sub ) + 1); - i_text = 0; - while( psz_buffer_sub[0] != '\0' ) - { - if( psz_buffer_sub[0] == '\\' && psz_buffer_sub[1] == 'n' ) - { - psz_new_subtitle[i_text] = ' '; - i_text++; - psz_buffer_sub += 2; - } - else if( psz_buffer_sub[0] == '\\' && psz_buffer_sub[1] == 'N' ) - { - psz_new_subtitle[i_text] = '\n'; - i_text++; - psz_buffer_sub += 2; - } - else if( psz_buffer_sub[0] == '{' && - psz_buffer_sub[1] == '\\' ) - { - /* SSA control code */ - while( psz_buffer_sub[0] != '\0' && - psz_buffer_sub[0] != '}' ) - { - psz_buffer_sub++; - } - psz_buffer_sub++; - } - else - { - psz_new_subtitle[i_text] = psz_buffer_sub[0]; - i_text++; - psz_buffer_sub++; - } - } - psz_new_subtitle[i_text] = '\0'; - - i_strlen = __MAX( psz_style_end - psz_style_start, 0); - psz_style = (char *)malloc( i_strlen + 1); - psz_style = memcpy( psz_style, psz_style_start, i_strlen ); - psz_style[i_strlen] = '\0'; - for( i = 0; i < p_sys->i_ssa_styles; i++ ) - { - if( !strcmp( p_sys->pp_ssa_styles[i]->psz_stylename, psz_style ) ) - p_style = p_sys->pp_ssa_styles[i]; - } - if( psz_style ) free( psz_style ); + const size_t i_offset = strlen(psz_html); + const size_t i_len = strnlen(psz_text, i_max); - p_spu->p_region->psz_text = psz_new_subtitle; - if( p_style == NULL ) + psz_html = realloc( psz_html, i_offset + i_len + 1 ); + if( psz_html != NULL ) { - p_spu->i_flags = SUBPICTURE_ALIGN_BOTTOM | p_sys->i_align; - p_spu->i_x = p_sys->i_align ? 20 : 0; - p_spu->i_y = 10; + memcpy( psz_html + i_offset, psz_text, i_len ); + psz_html[i_offset + i_len] = '\0'; } else - { - msg_Dbg( p_dec, "style is: %s", p_style->psz_stylename); - p_spu->p_region->p_style = &p_style->font_style; - p_spu->i_flags = p_style->i_align; - if( p_style->i_align & SUBPICTURE_ALIGN_LEFT ) - { - p_spu->i_x = (i_margin_l) ? i_margin_l : p_style->i_margin_h; - } - else if( p_style->i_align & SUBPICTURE_ALIGN_RIGHT ) - { - p_spu->i_x = (i_margin_r) ? i_margin_r : p_style->i_margin_h; - } - p_spu->i_y = (i_margin_v) ? i_margin_v : p_style->i_margin_v; - } + free( *ppsz_html ); + *ppsz_html = psz_html; } -static char* GotoNextLine( char *psz_text ) +static void HtmlPut( char **ppsz_html, const char *psz_text ) { - char *p_newline = psz_text; + HtmlNPut( ppsz_html, psz_text, INT_MAX ); +} - while( p_newline[0] != '\0' ) - { - if( p_newline[0] == '\n' || p_newline[0] == '\r' ) - { - p_newline++; - while( p_newline[0] == '\n' || p_newline[0] == '\r' ) - p_newline++; - break; - } - else p_newline++; - } - return p_newline; +static void HtmlCopy( char **ppsz_html, char **ppsz_subtitle, const char *psz_text ) +{ + HtmlPut( ppsz_html, psz_text ); + *ppsz_subtitle += strlen(psz_text); } -/***************************************************************************** - * ParseColor: SSA stores color in BBGGRR, in ASS it uses AABBGGRR - * The string value in the string can be a pure integer, or hexadecimal &HBBGGRR - *****************************************************************************/ -static void ParseColor( decoder_t *p_dec, char *psz_color, int *pi_color, int *pi_alpha ) +static char *CreateHtmlSubtitle( int *pi_align, char *psz_subtitle ) { - int i_color = 0; - if( !strncasecmp( psz_color, "&H", 2 ) ) + char *psz_tag = malloc( 1 ); + if( psz_tag == NULL ) + return NULL; + + char *psz_html = malloc( 1 ); + if( psz_html == NULL ) { - /* textual HEX representation */ - i_color = (int) strtol( psz_color+2, NULL, 16 ); + free( psz_tag ); + return NULL; } - else i_color = (int) strtol( psz_color, NULL, 0 ); + psz_tag[0] = '\0'; + psz_html[0] = '\0'; - *pi_color = 0; - *pi_color |= ( ( i_color & 0x000000FF ) << 16 ); /* Red */ - *pi_color |= ( ( i_color & 0x0000FF00 ) ); /* Green */ - *pi_color |= ( ( i_color & 0x00FF0000 ) >> 16 ); /* Blue */ + bool b_has_align = false; - if( pi_alpha != NULL ) - *pi_alpha = ( i_color & 0xFF000000 ) >> 24; -} + HtmlPut( &psz_html, "" ); -/***************************************************************************** - * ParseUSFHeader: Retrieve global formatting information etc - *****************************************************************************/ -static void ParseUSFHeader( decoder_t *p_dec ) -{ - decoder_sys_t *p_sys = p_dec->p_sys; - stream_t *p_sub = NULL; - xml_t *p_xml = NULL; - xml_reader_t *p_xml_reader = NULL; - - p_sub = stream_MemoryNew( VLC_OBJECT(p_dec), - p_dec->fmt_in.p_extra, - p_dec->fmt_in.i_extra, - VLC_TRUE ); - if( p_sub ) + /* */ + while( *psz_subtitle ) { - p_xml = xml_Create( p_dec ); - if( p_xml ) + if( *psz_subtitle == '\n' ) + { + HtmlPut( &psz_html, "
" ); + psz_subtitle++; + } + else if( *psz_subtitle == '<' ) { - p_xml_reader = xml_ReaderCreate( p_xml, p_sub ); - if( p_xml_reader ) + if( !strncasecmp( psz_subtitle, "
", 5 )) { - /* Look for Root Node */ - if( xml_ReaderRead( p_xml_reader ) == 1 ) - { - char *psz_node = xml_ReaderName( p_xml_reader ); - - if( !strcasecmp( "usfsubtitles", psz_node ) ) - ParseUSFHeaderTags( p_sys, p_xml_reader ); - - free( psz_node ); - } - - xml_ReaderDelete( p_xml, p_xml_reader ); + HtmlCopy( &psz_html, &psz_subtitle, "
" ); } - xml_Delete( p_xml ); - } - stream_Delete( p_sub ); - } -} + else if( !strncasecmp( psz_subtitle, "", 3 ) ) + { + HtmlCopy( &psz_html, &psz_subtitle, "" ); + HtmlPut( &psz_tag, "b" ); + } + else if( !strncasecmp( psz_subtitle, "", 3 ) ) + { + HtmlCopy( &psz_html, &psz_subtitle, "" ); + HtmlPut( &psz_tag, "i" ); + } + else if( !strncasecmp( psz_subtitle, "", 3 ) ) + { + HtmlCopy( &psz_html, &psz_subtitle, "" ); + HtmlPut( &psz_tag, "u" ); + } + else if( !strncasecmp( psz_subtitle, "", 3 ) ) + { + HtmlCopy( &psz_html, &psz_subtitle, "" ); + HtmlPut( &psz_tag, "s" ); + } + else if( !strncasecmp( psz_subtitle, "font_style.i_text_align = p_style->i_align; + int k; - TAB_APPEND( p_sys->i_ssa_styles, p_sys->pp_ssa_styles, p_style ); + /* i_original_width = atoi( psz_value ); - else if( !strcasecmp( "y", psz_name ) ) - p_sys->i_original_height = atoi( psz_value ); + psz_subtitle++; + i_len = strcspn( psz_subtitle, "\"" ); } - if( psz_name ) free( psz_name ); - if( psz_value ) free( psz_value ); - } - } - else if( !strcasecmp( "styles", psz_node ) && (i_style_level == 0) ) - { - i_style_level++; - } - else if( !strcasecmp( "style", psz_node ) && (i_style_level == 1) ) - { - i_style_level++; - - p_style = calloc( 1, sizeof(ssa_style_t) ); - - while ( xml_ReaderNextAttr( p_xml_reader ) == VLC_SUCCESS ) - { - char *psz_name = xml_ReaderName ( p_xml_reader ); - char *psz_value = xml_ReaderValue ( p_xml_reader ); - - if( psz_name && psz_value ) + else if( *psz_subtitle == '\'' ) { - if( !strcasecmp( "name", psz_name ) ) - p_style->psz_stylename = strdup( psz_value); + psz_subtitle++; + i_len = strcspn( psz_subtitle, "'" ); } - if( psz_name ) free( psz_name ); - if( psz_value ) free( psz_value ); - } - } - else if( !strcasecmp( "fontstyle", psz_node ) && (i_style_level == 2) ) - { - while ( xml_ReaderNextAttr( p_xml_reader ) == VLC_SUCCESS ) - { - char *psz_name = xml_ReaderName ( p_xml_reader ); - char *psz_value = xml_ReaderValue ( p_xml_reader ); - - if( psz_name && psz_value ) + else { - if( !strcasecmp( "face", psz_name ) ) - p_style->font_style.psz_fontname = strdup( psz_value); - else if( !strcasecmp( "size", psz_name ) ) - p_style->font_style.i_font_size = atoi( psz_value); - else if( !strcasecmp( "italic", psz_name ) ) - { - if( !strcasecmp( "yes", psz_value )) - p_style->font_style.i_style_flags |= STYLE_ITALIC; - } - else if( !strcasecmp( "weight", psz_name ) ) - { - if( !strcasecmp( "bold", psz_value )) - p_style->font_style.i_style_flags |= STYLE_BOLD; - } - else if( !strcasecmp( "underline", psz_name ) ) - { - if( !strcasecmp( "yes", psz_value )) - p_style->font_style.i_style_flags |= STYLE_UNDERLINE; - } - else if( !strcasecmp( "color", psz_name ) ) - { - if( *psz_value == '#' ) - { - unsigned long col = strtol(psz_value+1, NULL, 16); - p_style->font_style.i_font_color = (col & 0x00ffffff); - /* From DTD: */ - p_style->font_style.i_font_alpha = ((col >> 24) & 0xff) * 255 / 100; - } - } - else if( !strcasecmp( "outline-color", psz_name ) ) - { - if( *psz_value == '#' ) - { - unsigned long col = strtol(psz_value+1, NULL, 16); - p_style->font_style.i_outline_color = (col & 0x00ffffff); - /* From DTD: */ - p_style->font_style.i_outline_alpha = ((col >> 24) & 0xff) * 255 / 100; - } - } - else if( !strcasecmp( "shadow-color", psz_name ) ) - { - if( *psz_value == '#' ) - { - unsigned long col = strtol(psz_value+1, NULL, 16); - p_style->font_style.i_shadow_color = (col & 0x00ffffff); - /* From DTD: */ - p_style->font_style.i_shadow_alpha = ((col >> 24) & 0xff) * 255 / 100; - } - } + i_len = strcspn( psz_subtitle, " \t>" ); } - if( psz_name ) free( psz_name ); - if( psz_value ) free( psz_value ); + HtmlPut( &psz_html, "\"" ); + HtmlNPut( &psz_html, psz_subtitle, i_len ); + HtmlPut( &psz_html, "\"" ); + + psz_subtitle += i_len; + if( *psz_subtitle == '\"' || *psz_subtitle == '\'' ) + psz_subtitle++; + break; } } - else if( !strcasecmp( "position", psz_node ) && (i_style_level == 2) ) + if( psz_attribs[ k ] == NULL ) { - while ( xml_ReaderNextAttr( p_xml_reader ) == VLC_SUCCESS ) + /* Jump over unrecognised tag */ + int i_len = strcspn( psz_subtitle, "\"" ); + if( psz_subtitle[i_len] == '\"' ) { - char *psz_name = xml_ReaderName ( p_xml_reader ); - char *psz_value = xml_ReaderValue ( p_xml_reader ); - - if( psz_name && psz_value ) - { - if( !strcasecmp( "alignment", psz_name ) ) - { - if( !strcasecmp( "TopLeft", psz_value ) ) - { - p_style->i_align |= SUBPICTURE_ALIGN_TOP; - p_style->i_align |= SUBPICTURE_ALIGN_LEFT; - } - else if( !strcasecmp( "TopCenter", psz_value ) ) - { - p_style->i_align |= SUBPICTURE_ALIGN_TOP; - } - else if( !strcasecmp( "TopRight", psz_value ) ) - { - p_style->i_align |= SUBPICTURE_ALIGN_TOP; - p_style->i_align |= SUBPICTURE_ALIGN_RIGHT; - } - else if( !strcasecmp( "MiddleLeft", psz_value ) ) - { - p_style->i_align |= SUBPICTURE_ALIGN_LEFT; - } - else if( !strcasecmp( "MiddleCenter", psz_value ) ) - { - p_style->i_align = 0; - } - else if( !strcasecmp( "MiddleRight", psz_value ) ) - { - p_style->i_align |= SUBPICTURE_ALIGN_RIGHT; - } - else if( !strcasecmp( "BottomLeft", psz_value ) ) - { - p_style->i_align |= SUBPICTURE_ALIGN_BOTTOM; - p_style->i_align |= SUBPICTURE_ALIGN_LEFT; - } - else if( !strcasecmp( "BottomCenter", psz_value ) ) - { - p_style->i_align |= SUBPICTURE_ALIGN_BOTTOM; - } - else if( !strcasecmp( "BottomRight", psz_value ) ) - { - p_style->i_align |= SUBPICTURE_ALIGN_BOTTOM; - p_style->i_align |= SUBPICTURE_ALIGN_RIGHT; - } - } - } - if( psz_name ) free( psz_name ); - if( psz_value ) free( psz_value ); + i_len += 1 + strcspn( &psz_subtitle[i_len + 1], "\"" ); + if( psz_subtitle[i_len] == '\"' ) + i_len++; } - } - - free( psz_node ); - } - break; - } - } - if( p_style ) free( p_style ); -} -/***************************************************************************** - * ParseSSAHeader: Retrieve global formatting information etc - *****************************************************************************/ -static void ParseSSAHeader( decoder_t *p_dec ) -{ - decoder_sys_t *p_sys = p_dec->p_sys; - char *psz_parser = NULL; - char *psz_header = malloc( p_dec->fmt_in.i_extra+1 ); - int i_section_type = 1; - - memcpy( psz_header, p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra ); - psz_header[ p_dec->fmt_in.i_extra] = '\0'; - - /* Handle [Script Info] section */ - psz_parser = strcasestr( psz_header, "[Script Info]" ); - if( psz_parser == NULL ) goto eof; + /* Not a tag, something else we do not understand */ + if( i_len == 0 ) + psz_subtitle++; - psz_parser = GotoNextLine( psz_parser ); - - while( psz_parser[0] != '\0' ) - { - int temp; - char buffer_text[MAX_LINE + 1]; - - if( psz_parser[0] == '!' || psz_parser[0] == ';' ) /* comment */; - else if( sscanf( psz_parser, "PlayResX: %d", &temp ) == 1 ) - p_sys->i_original_width = ( temp > 0 ) ? temp : -1; - else if( sscanf( psz_parser, "PlayResY: %d", &temp ) == 1 ) - p_sys->i_original_height = ( temp > 0 ) ? temp : -1; - else if( sscanf( psz_parser, "Script Type: %8192s", buffer_text ) == 1 ) - { - if( !strcasecmp( buffer_text, "V4.00+" ) ) p_sys->b_ass = VLC_TRUE; - } - else if( !strncasecmp( psz_parser, "[V4 Styles]", 11 ) ) - i_section_type = 1; - else if( !strncasecmp( psz_parser, "[V4+ Styles]", 12) ) - { - i_section_type = 2; - p_sys->b_ass = VLC_TRUE; - } - else if( !strncasecmp( psz_parser, "[Events]", 8 ) ) - i_section_type = 4; - else if( !strncasecmp( psz_parser, "Style:", 6 ) ) - { - int i_font_size, i_bold, i_italic, i_border, i_outline, i_shadow, i_underline, - i_strikeout, i_scale_x, i_scale_y, i_spacing, i_align, i_margin_l, i_margin_r, i_margin_v; - - char psz_temp_stylename[MAX_LINE+1]; - char psz_temp_fontname[MAX_LINE+1]; - char psz_temp_color1[MAX_LINE+1]; - char psz_temp_color2[MAX_LINE+1]; - char psz_temp_color3[MAX_LINE+1]; - char psz_temp_color4[MAX_LINE+1]; - - if( i_section_type == 1 ) /* V4 */ - { - if( sscanf( psz_parser, "Style: %8192[^,],%8192[^,],%d,%8192[^,],%8192[^,],%8192[^,],%8192[^,],%d,%d,%d,%d,%d,%d,%d,%d,%d%*[^\r\n]", - psz_temp_stylename, psz_temp_fontname, &i_font_size, - psz_temp_color1, psz_temp_color2, psz_temp_color3, psz_temp_color4, &i_bold, &i_italic, - &i_border, &i_outline, &i_shadow, &i_align, &i_margin_l, &i_margin_r, &i_margin_v ) == 16 ) - { - ssa_style_t *p_style = malloc( sizeof(ssa_style_t) ); - - p_style->psz_stylename = strdup( psz_temp_stylename ); - p_style->font_style.psz_fontname = strdup( psz_temp_fontname ); - p_style->font_style.i_font_size = i_font_size; - - ParseColor( p_dec, psz_temp_color1, &p_style->font_style.i_font_color, NULL ); - ParseColor( p_dec, psz_temp_color4, &p_style->font_style.i_shadow_color, NULL ); - p_style->font_style.i_outline_color = p_style->font_style.i_shadow_color; - p_style->font_style.i_font_alpha = p_style->font_style.i_outline_alpha = p_style->font_style.i_shadow_alpha = 0x00; - p_style->font_style.i_style_flags = 0; - if( i_bold ) p_style->font_style.i_style_flags |= STYLE_BOLD; - if( i_italic ) p_style->font_style.i_style_flags |= STYLE_ITALIC; - - if( i_border == 1 ) p_style->font_style.i_style_flags |= (STYLE_ITALIC | STYLE_OUTLINE); - else if( i_border == 3 ) - { - p_style->font_style.i_style_flags |= STYLE_BACKGROUND; - p_style->font_style.i_background_color = p_style->font_style.i_shadow_color; - p_style->font_style.i_background_alpha = p_style->font_style.i_shadow_alpha; + psz_subtitle += i_len; } - p_style->font_style.i_shadow_width = i_shadow; - p_style->font_style.i_outline_width = i_outline; - - p_style->i_align = 0; - if( i_align == 1 || i_align == 5 || i_align == 9 ) p_style->i_align |= SUBPICTURE_ALIGN_LEFT; - if( i_align == 3 || i_align == 7 || i_align == 11 ) p_style->i_align |= SUBPICTURE_ALIGN_RIGHT; - if( i_align < 4 ) p_style->i_align |= SUBPICTURE_ALIGN_BOTTOM; - else if( i_align < 8 ) p_style->i_align |= SUBPICTURE_ALIGN_TOP; - p_style->i_margin_h = ( p_style->i_align & SUBPICTURE_ALIGN_RIGHT ) ? i_margin_r : i_margin_l; - p_style->i_margin_v = i_margin_v; - - TAB_APPEND( p_sys->i_ssa_styles, p_sys->pp_ssa_styles, p_style ); + HtmlNPut( &psz_html, psz_subtitle, strspn(psz_subtitle, " ") ); } - else msg_Warn( p_dec, "SSA v4 styleline parsing failed" ); + HtmlPut( &psz_html, ">" ); + psz_subtitle++; } - else if( i_section_type == 2 ) /* V4+ */ + else if( !strncmp( psz_subtitle, "= 0 ) { - ssa_style_t *p_style = malloc( sizeof(ssa_style_t) ); - - p_style->psz_stylename = strdup( psz_temp_stylename ); - p_style->font_style.psz_fontname = strdup( psz_temp_fontname ); - p_style->font_style.i_font_size = i_font_size; - msg_Dbg( p_dec, psz_temp_color1 ); - ParseColor( p_dec, psz_temp_color1, &p_style->font_style.i_font_color, &p_style->font_style.i_font_alpha ); - ParseColor( p_dec, psz_temp_color3, &p_style->font_style.i_outline_color, &p_style->font_style.i_outline_alpha ); - ParseColor( p_dec, psz_temp_color4, &p_style->font_style.i_shadow_color, &p_style->font_style.i_shadow_alpha ); - - p_style->font_style.i_style_flags = 0; - if( i_bold ) p_style->font_style.i_style_flags |= STYLE_BOLD; - if( i_italic ) p_style->font_style.i_style_flags |= STYLE_ITALIC; - if( i_underline ) p_style->font_style.i_style_flags |= STYLE_UNDERLINE; - if( i_strikeout ) p_style->font_style.i_style_flags |= STYLE_STRIKEOUT; - if( i_border == 1 ) p_style->font_style.i_style_flags |= (STYLE_ITALIC | STYLE_OUTLINE); - else if( i_border == 3 ) + psz_lastTag = psz_tag + i_len; + i_len = 0; + + switch( *psz_lastTag ) { - p_style->font_style.i_style_flags |= STYLE_BACKGROUND; - p_style->font_style.i_background_color = p_style->font_style.i_shadow_color; - p_style->font_style.i_background_alpha = p_style->font_style.i_shadow_alpha; + case 'b': + b_match = !strncasecmp( psz_subtitle, "", 4 ); + i_len = 4; + break; + case 'i': + b_match = !strncasecmp( psz_subtitle, "", 4 ); + i_len = 4; + break; + case 'u': + b_match = !strncasecmp( psz_subtitle, "", 4 ); + i_len = 4; + break; + case 's': + b_match = !strncasecmp( psz_subtitle, "", 4 ); + i_len = 4; + break; + case 'f': + b_match = !strncasecmp( psz_subtitle, "", 7 ); + i_len = 7; + break; + case 'I': + i_len = strcspn( psz_subtitle, ">" ); + b_match = psz_subtitle[i_len] == '>'; + b_ignore = true; + if( b_match ) + i_len++; + break; } - p_style->font_style.i_shadow_width = ( i_border == 1 ) ? i_shadow : 0; - p_style->font_style.i_outline_width = ( i_border == 1 ) ? i_outline : 0; - p_style->font_style.i_spacing = i_spacing; - //p_style->font_style.f_angle = f_angle; - - p_style->i_align = 0; - if( i_align == 0x1 || i_align == 0x4 || i_align == 0x1 ) p_style->i_align |= SUBPICTURE_ALIGN_LEFT; - if( i_align == 0x3 || i_align == 0x6 || i_align == 0x9 ) p_style->i_align |= SUBPICTURE_ALIGN_RIGHT; - if( i_align == 0x7 || i_align == 0x8 || i_align == 0x9 ) p_style->i_align |= SUBPICTURE_ALIGN_TOP; - if( i_align == 0x1 || i_align == 0x2 || i_align == 0x3 ) p_style->i_align |= SUBPICTURE_ALIGN_BOTTOM; - p_style->i_margin_h = ( p_style->i_align & SUBPICTURE_ALIGN_RIGHT ) ? i_margin_r : i_margin_l; - p_style->i_margin_v = i_margin_v; - - /*TODO: Ignored: angle i_scale_x|y (fontscaling), i_encoding */ - TAB_APPEND( p_sys->i_ssa_styles, p_sys->pp_ssa_styles, p_style ); } - else msg_Dbg( p_dec, "SSA V4+ styleline parsing failed" ); - } - } - psz_parser = GotoNextLine( psz_parser ); - } - -eof: - if( psz_header ) free( psz_header ); - return; -} - -/* Function now handles tags which has attribute values, and tries - * to deal with &' commands too. It no longer modifies the string - * in place, so that the original text can be reused - */ -static char *StripTags( char *psz_subtitle ) -{ - char *psz_text_start; - - psz_text_start = malloc( strlen( psz_subtitle ) + 1 ); - - if( psz_text_start != NULL ) - { - char *psz_text = psz_text_start; + if( !b_match ) + { + /* Not well formed -- kill everything */ + free( psz_html ); + psz_html = NULL; + break; + } + *psz_lastTag = '\0'; + if( !b_ignore ) + HtmlNPut( &psz_html, psz_subtitle, i_len ); - while( *psz_subtitle ) - { - if( *psz_subtitle == '<' ) - { - psz_subtitle += strcspn( psz_subtitle, ">" ); + psz_subtitle += i_len; } - else if( *psz_subtitle == '&' ) + else if( ( psz_subtitle[1] < 'a' || psz_subtitle[1] > 'z' ) && + ( psz_subtitle[1] < 'A' || psz_subtitle[1] > 'Z' ) ) { - if( !strncasecmp( psz_subtitle, "<", 4 )) - { - *psz_text++ = '<'; - psz_subtitle += strcspn( psz_subtitle, ";" ); - } - else if( !strncasecmp( psz_subtitle, ">", 4 )) - { - *psz_text++ = '>'; - psz_subtitle += strcspn( psz_subtitle, ";" ); - } - else if( !strncasecmp( psz_subtitle, "&", 5 )) - { - *psz_text++ = '&'; - psz_subtitle += strcspn( psz_subtitle, ";" ); - } - else - { - /* Assume it is just a normal ampersand */ - *psz_text++ = '&'; - } + /* We have a single < */ + HtmlPut( &psz_html, "<" ); + psz_subtitle++; } else { - *psz_text++ = *psz_subtitle; - } + /* We have an unknown tag or a single < */ - psz_subtitle++; - } - *psz_text = '\0'; - psz_text_start = realloc( psz_text_start, strlen( psz_text_start ) + 1 ); - } - return psz_text_start; -} + /* Search for the next tag or end of tag or end of string */ + char *psz_stop = psz_subtitle + 1 + strcspn( &psz_subtitle[1], "<>" ); + char *psz_closing = strstr( psz_subtitle, "/>" ); -/* Try to respect any style tags present in the subtitle string. The main - * problem here is a lack of adequate specs for the subtitle formats. - * SSA/ASS and USF are both detail spec'ed -- but they are handled elsewhere. - * SAMI has a detailed spec, but extensive rework is needed in the demux - * code to prevent all this style information being excised, as it presently - * does. - * That leaves the others - none of which were (I guess) originally intended - * to be carrying style information. Over time people have used them that way. - * In the absence of specifications from which to work, the tags supported - * have been restricted to the simple set permitted by the USF DTD, ie. : - * Basic:
, , , - * Extended: - * Attributes: face - * family - * size - * color - * outline-color - * shadow-color - * outline-level - * shadow-level - * back-color - * alpha - * There is also the further restriction that the subtitle be well-formed - * as an XML entity, ie. the HTML sentence: - * Bold and Italics - * doesn't qualify because the tags aren't nested one inside the other. - * tags are automatically added to the output to ensure - * well-formedness. - * If the text doesn't qualify for any reason, a NULL string is - * returned, and the rendering engine will fall back to the - * plain text version of the subtitle. - */ -static char *CreateHtmlSubtitle( char *psz_subtitle ) -{ - char psz_tagStack[ 100 ]; - size_t i_buf_size = strlen( psz_subtitle ) + 100; - char *psz_html_start = malloc( i_buf_size ); - - psz_tagStack[ 0 ] = '\0'; - - if( psz_html_start != NULL ) - { - char *psz_html = psz_html_start; - - strcpy( psz_html, "" ); - psz_html += 6; - - while( *psz_subtitle ) - { - if( *psz_subtitle == '\n' ) - { - strcpy( psz_html, "
" ); - psz_html += 5; - psz_subtitle++; - } - else if( *psz_subtitle == '<' ) - { - if( !strncasecmp( psz_subtitle, "
", 5 )) - { - strcpy( psz_html, "
" ); - psz_html += 5; - psz_subtitle += 5; - } - else if( !strncasecmp( psz_subtitle, "", 3 ) ) - { - strcpy( psz_html, "" ); - strcat( psz_tagStack, "b" ); - psz_html += 3; - psz_subtitle += 3; - } - else if( !strncasecmp( psz_subtitle, "", 3 ) ) - { - strcpy( psz_html, "" ); - strcat( psz_tagStack, "i" ); - psz_html += 3; - psz_subtitle += 3; - } - else if( !strncasecmp( psz_subtitle, "", 3 ) ) + if( psz_closing && psz_closing < psz_stop ) { - strcpy( psz_html, "" ); - strcat( psz_tagStack, "u" ); - psz_html += 3; - psz_subtitle += 3; + /* We have a self closed tag, remove it */ + psz_subtitle = &psz_closing[2]; } - else if( !strncasecmp( psz_subtitle, "' ) { - const char *psz_attribs[] = { "face=\"", "family=\"", "size=\"", - "color=\"", "outline-color=\"", "shadow-color=\"", - "outline-level=\"", "shadow-level=\"", "back-color=\"", - "alpha=\"", NULL }; + char psz_match[256]; - strcpy( psz_html, "" )] = '\0'; - while( *psz_subtitle != '>' ) + if( strstr( psz_subtitle, psz_match ) ) { - int k; - - for( k=0; psz_attribs[ k ]; k++ ) - { - int i_len = strlen( psz_attribs[ k ] ); - - if( !strncasecmp( psz_subtitle, psz_attribs[ k ], i_len )) - { - i_len += strcspn( psz_subtitle + i_len, "\"" ) + 1; - - strncpy( psz_html, psz_subtitle, i_len ); - psz_html += i_len; - psz_subtitle += i_len; - break; - } - } - if( psz_attribs[ k ] == NULL ) - { - /* Jump over unrecognised tag */ - int i_len = strcspn( psz_subtitle, "\"" ) + 1; - - i_len += strcspn( psz_subtitle + i_len, "\"" ) + 1; - psz_subtitle += i_len; - } - while (*psz_subtitle == ' ') - *psz_html++ = *psz_subtitle++; + /* We have the closing tag, ignore it TODO */ + psz_subtitle = &psz_stop[1]; + HtmlPut( &psz_tag, "I" ); } - *psz_html++ = *psz_subtitle++; - } - else if( !strncmp( psz_subtitle, "= 0 ) + else { - psz_lastTag = psz_tagStack + i_len; - i_len = 0; + int i_len = psz_stop + 1 - psz_subtitle; - switch( *psz_lastTag ) + /* Copy the whole data */ + for( ; i_len > 0; i_len--, psz_subtitle++ ) { - case 'b': - b_match = !strncasecmp( psz_subtitle, "", 4 ); - i_len = 4; - break; - case 'i': - b_match = !strncasecmp( psz_subtitle, "", 4 ); - i_len = 4; - break; - case 'u': - b_match = !strncasecmp( psz_subtitle, "", 4 ); - i_len = 4; - break; - case 'f': - b_match = !strncasecmp( psz_subtitle, "", 7 ); - i_len = 7; - break; + if( *psz_subtitle == '<' ) + HtmlPut( &psz_html, "<" ); + else if( *psz_subtitle == '>' ) + HtmlPut( &psz_html, ">" ); + else + HtmlNPut( &psz_html, psz_subtitle, 1 ); } } - if( ! b_match ) - { - /* Not well formed -- kill everything */ - free( psz_html_start ); - psz_html_start = NULL; - break; - } - *psz_lastTag = '\0'; - strncpy( psz_html, psz_subtitle, i_len ); - psz_html += i_len; - psz_subtitle += i_len; } else { - psz_subtitle += strcspn( psz_subtitle, ">" ); + /* We have a single < */ + HtmlPut( &psz_html, "<" ); + psz_subtitle++; } } - else if( *psz_subtitle == '&' ) + } + else if( *psz_subtitle == '&' ) + { + if( !strncasecmp( psz_subtitle, "<", 4 )) { - if( !strncasecmp( psz_subtitle, "<", 4 )) - { - strcpy( psz_html, "<" ); - psz_html += 4; - psz_subtitle += 4; - } - else if( !strncasecmp( psz_subtitle, ">", 4 )) - { - strcpy( psz_html, ">" ); - psz_html += 4; - psz_subtitle += 4; - } - else if( !strncasecmp( psz_subtitle, "&", 5 )) - { - strcpy( psz_html, "&" ); - psz_html += 5; - psz_subtitle += 5; - } - else - { - strcpy( psz_html, "&" ); - psz_html += 5; - psz_subtitle++; - } + HtmlCopy( &psz_html, &psz_subtitle, "<" ); + } + else if( !strncasecmp( psz_subtitle, ">", 4 )) + { + HtmlCopy( &psz_html, &psz_subtitle, ">" ); + } + else if( !strncasecmp( psz_subtitle, "&", 5 )) + { + HtmlCopy( &psz_html, &psz_subtitle, "&" ); } else { - *psz_html++ = *psz_subtitle++; + HtmlPut( &psz_html, "&" ); + psz_subtitle++; } - - if( ( size_t )( psz_html - psz_html_start ) > i_buf_size - 10 ) + } + else if( *psz_subtitle == '>' ) + { + HtmlPut( &psz_html, ">" ); + psz_subtitle++; + } + else if( psz_subtitle[0] == '{' && psz_subtitle[1] == '\\' && + strchr( psz_subtitle, '}' ) ) + { + /* Check for forced alignment */ + if( !b_has_align && + !strncmp( psz_subtitle, "{\\an", 4 ) && psz_subtitle[4] >= '1' && psz_subtitle[4] <= '9' && psz_subtitle[5] == '}' ) { - int i_len = psz_html - psz_html_start; + static const int pi_vertical[3] = { SUBPICTURE_ALIGN_BOTTOM, 0, SUBPICTURE_ALIGN_TOP }; + static const int pi_horizontal[3] = { SUBPICTURE_ALIGN_LEFT, 0, SUBPICTURE_ALIGN_RIGHT }; + const int i_id = psz_subtitle[4] - '1'; - i_buf_size += 100; - psz_html_start = realloc( psz_html_start, i_buf_size ); - psz_html = psz_html_start + i_len; - *psz_html = '\0'; + b_has_align = true; + *pi_align = pi_vertical[i_id/3] | pi_horizontal[i_id%3]; } - } - strcpy( psz_html, "" ); - psz_html += 7; + /* TODO fr -> rotation */ - if( psz_tagStack[ 0 ] != '\0' ) + /* Hide {\stupidity} */ + psz_subtitle = strchr( psz_subtitle, '}' ) + 1; + } + else if( psz_subtitle[0] == '{' && + ( psz_subtitle[1] == 'Y' || psz_subtitle[1] == 'y' ) + && psz_subtitle[2] == ':' && strchr( psz_subtitle, '}' ) ) { - /* Not well formed -- kill everything */ - free( psz_html_start ); - psz_html_start = NULL; + // FIXME: We don't do difference between Y and y, and we should. + if( psz_subtitle[3] == 'i' ) + { + HtmlPut( &psz_html, "" ); + HtmlPut( &psz_tag, "i" ); + } + if( psz_subtitle[3] == 'b' ) + { + HtmlPut( &psz_html, "" ); + HtmlPut( &psz_tag, "b" ); + } + if( psz_subtitle[3] == 'u' ) + { + HtmlPut( &psz_html, "" ); + HtmlPut( &psz_tag, "u" ); + } + psz_subtitle = strchr( psz_subtitle, '}' ) + 1; } - else if( psz_html_start ) + else if( psz_subtitle[0] == '{' && psz_subtitle[2] == ':' && strchr( psz_subtitle, '}' ) ) { - /* Shrink the memory requirements */ - psz_html_start = realloc( psz_html_start, psz_html - psz_html_start + 1 ); + // Hide other {x:y} atrocities, like {c:$bbggrr} or {P:x} + psz_subtitle = strchr( psz_subtitle, '}' ) + 1; } + else if( psz_subtitle[0] == '\\' && psz_subtitle[1] ) + { + if( psz_subtitle[1] == 'N' || psz_subtitle[1] == 'n' ) + { + HtmlPut( &psz_html, "
" ); + psz_subtitle += 2; + } + else if( psz_subtitle[1] == 'h' ) + { + /* Non breakable space */ + HtmlPut( &psz_html, NO_BREAKING_SPACE ); + psz_subtitle += 2; + } + else + { + HtmlPut( &psz_html, "\\" ); + psz_subtitle++; + } + } + else + { + HtmlNPut( &psz_html, psz_subtitle, 1 ); +#if 0 + if( *psz_html ) + { + /* Check for double whitespace */ +# error This test does not make sense. + if( ( *psz_html == ' ' || *psz_html == '\t' ) && + ( *(psz_html-1) == ' ' || *(psz_html-1) == '\t' ) ) + { + HtmlPut( &psz_html, NO_BREAKING_SPACE ); + psz_html--; + } + } +#endif + psz_subtitle++; + } + } + + while( psz_tag && *psz_tag ) + { + /* */ + char *psz_last = &psz_tag[strlen(psz_tag)-1]; + switch( *psz_last ) + { + case 'b': + HtmlPut( &psz_html, "" ); + break; + case 'i': + HtmlPut( &psz_html, "" ); + break; + case 'u': + HtmlPut( &psz_html, "" ); + break; + case 's': + HtmlPut( &psz_html, "" ); + break; + case 'f': + HtmlPut( &psz_html, "" ); + break; + case 'I': + break; + } + *psz_last = '\0'; } - return psz_html_start; + /* Close not well formed subtitle */ + HtmlPut( &psz_html, "" ); + + free( psz_tag ); + + return psz_html; }