1 // -*- c-basic-offset: 8; indent-tabs-mode: t -*-
2 // vim:ts=8:sw=8:noet:ai:
4 Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
28 #include <sys/types.h>
38 #include "ass_utils.h"
39 #include "ass_library.h"
42 typedef enum {PST_UNKNOWN
= 0, PST_INFO
, PST_STYLES
, PST_EVENTS
, PST_FONTS
} parser_state_t
;
44 struct parser_priv_s
{
52 #define ASS_STYLES_ALLOC 20
53 #define ASS_EVENTS_ALLOC 200
55 void ass_free_track(ass_track_t
* track
) {
58 if (track
->parser_priv
) {
59 if (track
->parser_priv
->fontname
)
60 free(track
->parser_priv
->fontname
);
61 if (track
->parser_priv
->fontdata
)
62 free(track
->parser_priv
->fontdata
);
63 free(track
->parser_priv
);
65 if (track
->style_format
)
66 free(track
->style_format
);
67 if (track
->event_format
)
68 free(track
->event_format
);
70 for (i
= 0; i
< track
->n_styles
; ++i
)
71 ass_free_style(track
, i
);
75 for (i
= 0; i
< track
->n_events
; ++i
)
76 ass_free_event(track
, i
);
81 /// \brief Allocate a new style struct
82 /// \param track track
84 int ass_alloc_style(ass_track_t
* track
) {
87 assert(track
->n_styles
<= track
->max_styles
);
89 if (track
->n_styles
== track
->max_styles
) {
90 track
->max_styles
+= ASS_STYLES_ALLOC
;
91 track
->styles
= (ass_style_t
*)realloc(track
->styles
, sizeof(ass_style_t
)*track
->max_styles
);
94 sid
= track
->n_styles
++;
95 memset(track
->styles
+ sid
, 0, sizeof(ass_style_t
));
99 /// \brief Allocate a new event struct
100 /// \param track track
102 int ass_alloc_event(ass_track_t
* track
) {
105 assert(track
->n_events
<= track
->max_events
);
107 if (track
->n_events
== track
->max_events
) {
108 track
->max_events
+= ASS_EVENTS_ALLOC
;
109 track
->events
= (ass_event_t
*)realloc(track
->events
, sizeof(ass_event_t
)*track
->max_events
);
112 eid
= track
->n_events
++;
113 memset(track
->events
+ eid
, 0, sizeof(ass_event_t
));
117 void ass_free_event(ass_track_t
* track
, int eid
) {
118 ass_event_t
* event
= track
->events
+ eid
;
125 if (event
->render_priv
)
126 free(event
->render_priv
);
129 void ass_free_style(ass_track_t
* track
, int sid
) {
130 ass_style_t
* style
= track
->styles
+ sid
;
134 free(style
->FontName
);
137 // ==============================================================================================
139 static void skip_spaces(char** str
) {
141 while ((*p
==' ') || (*p
=='\t'))
146 static void rskip_spaces(char** str
, char* limit
) {
148 while ((p
>= limit
) && ((*p
==' ') || (*p
=='\t')))
154 * \brief find style by name
156 * \param name style name
157 * \return index in track->styles
158 * Returnes 0 if no styles found => expects at least 1 style.
159 * Parsing code always adds "Default" style in the end.
161 static int lookup_style(ass_track_t
* track
, char* name
) {
163 if (*name
== '*') ++name
; // FIXME: what does '*' really mean ?
164 for (i
=0; i
<track
->n_styles
; ++i
) {
165 // FIXME: mb strcasecmp ?
166 if (strcmp(track
->styles
[i
].Name
, name
) == 0)
169 i
= track
->default_style
;
170 mp_msg(MSGT_ASS
, MSGL_WARN
, MSGTR_LIBASS_NoStyleNamedXFoundUsingY
, track
, name
, track
->styles
[i
].Name
);
171 return i
; // use the first style
174 static uint32_t string2color(char* p
) {
176 (void)strtocolor(&p
, &tmp
);
180 static long long string2timecode(char* p
) {
181 unsigned h
, m
, s
, ms
;
183 int res
= sscanf(p
, "%1d:%2d:%2d.%2d", &h
, &m
, &s
, &ms
);
185 mp_msg(MSGT_ASS
, MSGL_WARN
, MSGTR_LIBASS_BadTimestamp
);
188 tm
= ((h
* 60 + m
) * 60 + s
) * 1000 + ms
* 10;
193 * \brief converts numpad-style align to align.
195 static int numpad2align(int val
) {
197 v
= (val
- 1) / 3; // 0, 1 or 2 for vertical alignment
198 if (v
!= 0) v
= 3 - v
;
199 res
= ((val
- 1) % 3) + 1; // horizontal alignment
204 #define NEXT(str,token) \
205 token = next_token(&str); \
208 #define ANYVAL(name,func) \
209 } else if (strcasecmp(tname, #name) == 0) { \
210 target->name = func(token); \
211 mp_msg(MSGT_ASS, MSGL_DBG2, "%s = %s\n", #name, token);
213 #define STRVAL(name) \
214 } else if (strcasecmp(tname, #name) == 0) { \
215 if (target->name != NULL) free(target->name); \
216 target->name = strdup(token); \
217 mp_msg(MSGT_ASS, MSGL_DBG2, "%s = %s\n", #name, token);
219 #define COLORVAL(name) ANYVAL(name,string2color)
220 #define INTVAL(name) ANYVAL(name,atoi)
221 #define FPVAL(name) ANYVAL(name,atof)
222 #define TIMEVAL(name) ANYVAL(name,string2timecode)
223 #define STYLEVAL(name) \
224 } else if (strcasecmp(tname, #name) == 0) { \
225 target->name = lookup_style(track, token); \
226 mp_msg(MSGT_ASS, MSGL_DBG2, "%s = %s\n", #name, token);
228 #define ALIAS(alias,name) \
229 if (strcasecmp(tname, #alias) == 0) {tname = #name;}
231 static char* next_token(char** str
) {
239 start
= p
; // start of the token
240 for (; (*p
!= '\0') && (*p
!= ','); ++p
) {}
242 *str
= p
; // eos found, str will point to '\0' at exit
245 *str
= p
+ 1; // ',' found, str will point to the next char (beginning of the next token)
247 --p
; // end of current token
248 rskip_spaces(&p
, start
);
250 p
= start
; // empty token
252 ++p
; // the first space character, or '\0'
257 * \brief Parse the tail of Dialogue line
259 * \param event parsed data goes here
260 * \param str string to parse, zero-terminated
261 * \param n_ignored number of format options to skip at the beginning
263 static int process_event_tail(ass_track_t
* track
, ass_event_t
* event
, char* str
, int n_ignored
)
269 ass_event_t
* target
= event
;
271 char* format
= strdup(track
->event_format
);
272 char* q
= format
; // format scanning pointer
274 if (track
->n_styles
== 0) {
275 // add "Default" style to the end
276 // will be used if track does not contain a default style (or even does not contain styles at all)
277 int sid
= ass_alloc_style(track
);
278 track
->styles
[sid
].Name
= strdup("Default");
279 track
->styles
[sid
].FontName
= strdup("Arial");
282 for (i
= 0; i
< n_ignored
; ++i
) {
288 if (strcasecmp(tname
, "Text") == 0) {
290 event
->Text
= strdup(p
);
291 if (*event
->Text
!= 0) {
292 last
= event
->Text
+ strlen(event
->Text
) - 1;
293 if (last
>= event
->Text
&& *last
== '\r')
296 mp_msg(MSGT_ASS
, MSGL_DBG2
, "Text = %s\n", event
->Text
);
297 event
->Duration
-= event
->Start
;
299 return 0; // "Text" is always the last
303 ALIAS(End
,Duration
) // temporarily store end timecode in event->Duration
321 * \brief Parse command line style overrides (--ass-force-style option)
322 * \param track track to apply overrides to
323 * The format for overrides is [StyleName.]Field=Value
325 void process_force_style(ass_track_t
* track
) {
326 char **fs
, *eq
, *dt
, *style
, *tname
, *token
;
329 char** list
= track
->library
->style_overrides
;
333 for (fs
= list
; *fs
; ++fs
) {
334 eq
= strrchr(*fs
, '=');
340 dt
= strrchr(*fs
, '.');
349 for (sid
= 0; sid
< track
->n_styles
; ++sid
) {
350 if (style
== NULL
|| strcasecmp(track
->styles
[sid
].Name
, style
) == 0) {
351 target
= track
->styles
+ sid
;
354 COLORVAL(PrimaryColour
)
355 COLORVAL(SecondaryColour
)
356 COLORVAL(OutlineColour
)
384 * \brief Parse the Style line
386 * \param str string to parse, zero-terminated
387 * Allocates a new style struct.
389 static int process_style(ass_track_t
* track
, char *str
)
396 char* q
; // format scanning pointer
401 if (!track
->style_format
) {
402 // no style format header
403 // probably an ancient script version
404 if (track
->track_type
== TRACK_TYPE_SSA
)
405 track
->style_format
= strdup("Name, Fontname, Fontsize, PrimaryColour, SecondaryColour,"
406 "TertiaryColour, BackColour, Bold, Italic, BorderStyle, Outline,"
407 "Shadow, Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding");
409 track
->style_format
= strdup("Name, Fontname, Fontsize, PrimaryColour, SecondaryColour,"
410 "OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut,"
411 "ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow,"
412 "Alignment, MarginL, MarginR, MarginV, Encoding");
415 q
= format
= strdup(track
->style_format
);
417 mp_msg(MSGT_ASS
, MSGL_V
, "[%p] Style: %s\n", track
, str
);
419 sid
= ass_alloc_style(track
);
421 style
= track
->styles
+ sid
;
423 // fill style with some default values
424 style
->ScaleX
= 100.;
425 style
->ScaleY
= 100.;
431 // ALIAS(TertiaryColour,OutlineColour) // ignore TertiaryColour; it appears only in SSA, and is overridden by BackColour
435 if ((strcmp(target
->Name
, "Default")==0) || (strcmp(target
->Name
, "*Default")==0))
436 track
->default_style
= sid
;
438 COLORVAL(PrimaryColour
)
439 COLORVAL(SecondaryColour
)
440 COLORVAL(OutlineColour
) // TertiaryColor
442 // SSA uses BackColour for both outline and shadow
443 // this will destroy SSA's TertiaryColour, but i'm not going to use it anyway
444 if (track
->track_type
== TRACK_TYPE_SSA
)
445 target
->OutlineColour
= target
->BackColour
;
455 if (track
->track_type
== TRACK_TYPE_ASS
)
456 target
->Alignment
= numpad2align(target
->Alignment
);
467 style
->ScaleX
/= 100.;
468 style
->ScaleY
/= 100.;
469 style
->Bold
= !!style
->Bold
;
470 style
->Italic
= !!style
->Italic
;
471 style
->Underline
= !!style
->Underline
;
473 style
->Name
= strdup("Default");
474 if (!style
->FontName
)
475 style
->FontName
= strdup("Arial");
481 static int process_styles_line(ass_track_t
* track
, char *str
)
483 if (!strncmp(str
,"Format:", 7)) {
486 track
->style_format
= strdup(p
);
487 mp_msg(MSGT_ASS
, MSGL_DBG2
, "Style format: %s\n", track
->style_format
);
488 } else if (!strncmp(str
,"Style:", 6)) {
491 process_style(track
, p
);
496 static int process_info_line(ass_track_t
* track
, char *str
)
498 if (!strncmp(str
, "PlayResX:", 9)) {
499 track
->PlayResX
= atoi(str
+ 9);
500 } else if (!strncmp(str
,"PlayResY:", 9)) {
501 track
->PlayResY
= atoi(str
+ 9);
502 } else if (!strncmp(str
,"Timer:", 6)) {
503 track
->Timer
= atof(str
+ 6);
504 } else if (!strncmp(str
,"WrapStyle:", 10)) {
505 track
->WrapStyle
= atoi(str
+ 10);
510 static int process_events_line(ass_track_t
* track
, char *str
)
512 if (!strncmp(str
, "Format:", 7)) {
515 track
->event_format
= strdup(p
);
516 mp_msg(MSGT_ASS
, MSGL_DBG2
, "Event format: %s\n", track
->event_format
);
517 } else if (!strncmp(str
, "Dialogue:", 9)) {
518 // This should never be reached for embedded subtitles.
519 // They have slightly different format and are parsed in ass_process_chunk,
520 // called directly from demuxer
527 eid
= ass_alloc_event(track
);
528 event
= track
->events
+ eid
;
530 process_event_tail(track
, event
, str
, 0);
532 mp_msg(MSGT_ASS
, MSGL_V
, "Not understood: %s \n", str
);
537 // Copied from mkvtoolnix
538 static unsigned char* decode_chars(unsigned char c1
, unsigned char c2
,
539 unsigned char c3
, unsigned char c4
, unsigned char* dst
, int cnt
)
542 unsigned char bytes
[3];
545 value
= ((c1
- 33) << 18) + ((c2
- 33) << 12) + ((c3
- 33) << 6) + (c4
- 33);
546 bytes
[2] = value
& 0xff;
547 bytes
[1] = (value
& 0xff00) >> 8;
548 bytes
[0] = (value
& 0xff0000) >> 16;
550 for (i
= 0; i
< cnt
; ++i
)
555 static int decode_font(ass_track_t
* track
)
560 int size
; // original size
561 int dsize
; // decoded size
562 unsigned char* buf
= 0;
564 mp_msg(MSGT_ASS
, MSGL_V
, "font: %d bytes encoded data \n", track
->parser_priv
->fontdata_used
);
565 size
= track
->parser_priv
->fontdata_used
;
567 mp_msg(MSGT_ASS
, MSGL_ERR
, MSGTR_LIBASS_BadEncodedDataSize
);
568 goto error_decode_font
;
570 buf
= malloc(size
/ 4 * 3 + 2);
572 for (i
= 0, p
= (unsigned char*)track
->parser_priv
->fontdata
; i
< size
/ 4; i
++, p
+=4) {
573 q
= decode_chars(p
[0], p
[1], p
[2], p
[3], q
, 3);
576 q
= decode_chars(p
[0], p
[1], 0, 0, q
, 1);
577 } else if (size
% 4 == 3) {
578 q
= decode_chars(p
[0], p
[1], p
[2], 0, q
, 2);
581 assert(dsize
<= size
/ 4 * 3 + 2);
583 if (track
->library
->extract_fonts
) {
584 ass_add_font(track
->library
, track
->parser_priv
->fontname
, (char*)buf
, dsize
);
590 free(track
->parser_priv
->fontname
);
591 free(track
->parser_priv
->fontdata
);
592 track
->parser_priv
->fontname
= 0;
593 track
->parser_priv
->fontdata
= 0;
594 track
->parser_priv
->fontdata_size
= 0;
595 track
->parser_priv
->fontdata_used
= 0;
599 static int process_fonts_line(ass_track_t
* track
, char *str
)
603 if (!strncmp(str
, "fontname:", 9)) {
606 if (track
->parser_priv
->fontname
) {
609 track
->parser_priv
->fontname
= strdup(p
);
610 mp_msg(MSGT_ASS
, MSGL_V
, "fontname: %s\n", track
->parser_priv
->fontname
);
614 if (!track
->parser_priv
->fontname
) {
615 mp_msg(MSGT_ASS
, MSGL_V
, "Not understood: %s \n", str
);
621 mp_msg(MSGT_ASS
, MSGL_WARN
, MSGTR_LIBASS_FontLineTooLong
, len
, str
);
624 if (track
->parser_priv
->fontdata_used
+ len
> track
->parser_priv
->fontdata_size
) {
625 track
->parser_priv
->fontdata_size
+= 100 * 1024;
626 track
->parser_priv
->fontdata
= realloc(track
->parser_priv
->fontdata
, track
->parser_priv
->fontdata_size
);
628 memcpy(track
->parser_priv
->fontdata
+ track
->parser_priv
->fontdata_used
, str
, len
);
629 track
->parser_priv
->fontdata_used
+= len
;
635 * \brief Parse a header line
637 * \param str string to parse, zero-terminated
639 static int process_line(ass_track_t
* track
, char *str
)
641 if (strstr(str
, "[Script Info]")) { // FIXME: strstr to skip possible BOM at the beginning of the script
642 track
->parser_priv
->state
= PST_INFO
;
643 } else if (!strncmp(str
, "[V4 Styles]", 11)) {
644 track
->parser_priv
->state
= PST_STYLES
;
645 track
->track_type
= TRACK_TYPE_SSA
;
646 } else if (!strncmp(str
, "[V4+ Styles]", 12)) {
647 track
->parser_priv
->state
= PST_STYLES
;
648 track
->track_type
= TRACK_TYPE_ASS
;
649 } else if (!strncmp(str
, "[Events]", 8)) {
650 track
->parser_priv
->state
= PST_EVENTS
;
651 } else if (!strncmp(str
, "[Fonts]", 7)) {
652 track
->parser_priv
->state
= PST_FONTS
;
654 switch (track
->parser_priv
->state
) {
656 process_info_line(track
, str
);
659 process_styles_line(track
, str
);
662 process_events_line(track
, str
);
665 process_fonts_line(track
, str
);
672 // there is no explicit end-of-font marker in ssa/ass
673 if ((track
->parser_priv
->state
!= PST_FONTS
) && (track
->parser_priv
->fontname
))
679 static int process_text(ass_track_t
* track
, char* str
)
684 for (;((*p
=='\r')||(*p
=='\n'));++p
) {}
685 for (q
=p
; ((*q
!='\0')&&(*q
!='\r')&&(*q
!='\n')); ++q
) {};
690 process_line(track
, p
);
699 * \brief Process CodecPrivate section of subtitle stream
701 * \param data string to parse
702 * \param size length of data
703 CodecPrivate section contains [Stream Info] and [V4+ Styles] ([V4 Styles] for SSA) sections
705 void ass_process_codec_private(ass_track_t
* track
, char *data
, int size
)
707 char* str
= malloc(size
+ 1);
709 memcpy(str
, data
, size
);
712 process_text(track
, str
);
715 if (!track
->event_format
) {
716 // probably an mkv produced by ancient mkvtoolnix
717 // such files don't have [Events] and Format: headers
718 track
->parser_priv
->state
= PST_EVENTS
;
719 if (track
->track_type
== TRACK_TYPE_SSA
)
720 track
->event_format
= strdup("Format: Marked, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text");
722 track
->event_format
= strdup("Format: Layer, Start, End, Style, Actor, MarginL, MarginR, MarginV, Effect, Text");
725 process_force_style(track
);
728 static int check_duplicate_event(ass_track_t
* track
, int ReadOrder
)
731 for (i
= 0; i
<track
->n_events
- 1; ++i
) // ignoring last event, it is the one we are comparing with
732 if (track
->events
[i
].ReadOrder
== ReadOrder
)
738 * \brief Process a chunk of subtitle stream data. In Matroska, this contains exactly 1 event (or a commentary).
740 * \param data string to parse
741 * \param size length of data
742 * \param timecode starting time of the event (milliseconds)
743 * \param duration duration of the event (milliseconds)
745 void ass_process_chunk(ass_track_t
* track
, char *data
, int size
, long long timecode
, long long duration
)
753 if (!track
->event_format
) {
754 mp_msg(MSGT_ASS
, MSGL_WARN
, MSGTR_LIBASS_EventFormatHeaderMissing
);
758 str
= malloc(size
+ 1);
759 memcpy(str
, data
, size
);
761 mp_msg(MSGT_ASS
, MSGL_V
, "event at %" PRId64
", +%" PRId64
": %s \n", (int64_t)timecode
, (int64_t)duration
, str
);
763 eid
= ass_alloc_event(track
);
764 event
= track
->events
+ eid
;
770 event
->ReadOrder
= atoi(token
);
771 if (check_duplicate_event(track
, event
->ReadOrder
))
775 event
->Layer
= atoi(token
);
777 process_event_tail(track
, event
, p
, 3);
779 event
->Start
= timecode
;
780 event
->Duration
= duration
;
787 ass_free_event(track
, eid
);
793 /** \brief recode buffer to utf-8
794 * constraint: codepage != 0
795 * \param data pointer to text buffer
796 * \param size buffer size
797 * \return a pointer to recoded buffer, caller is responsible for freeing it
799 static char* sub_recode(char* data
, size_t size
, char* codepage
)
801 static iconv_t icdsc
= (iconv_t
)(-1);
802 char* tocp
= "UTF-8";
807 const char* cp_tmp
= codepage
;
809 char enca_lang
[3], enca_fallback
[100];
810 if (sscanf(codepage
, "enca:%2s:%99s", enca_lang
, enca_fallback
) == 2
811 || sscanf(codepage
, "ENCA:%2s:%99s", enca_lang
, enca_fallback
) == 2) {
812 cp_tmp
= guess_buffer_cp((unsigned char*)data
, size
, enca_lang
, enca_fallback
);
815 if ((icdsc
= iconv_open (tocp
, cp_tmp
)) != (iconv_t
)(-1)){
816 mp_msg(MSGT_ASS
,MSGL_V
,"LIBSUB: opened iconv descriptor.\n");
818 mp_msg(MSGT_ASS
,MSGL_ERR
,MSGTR_LIBASS_ErrorOpeningIconvDescriptor
);
824 size_t oleft
= size
- 1;
829 outbuf
= malloc(size
);
834 rc
= iconv(icdsc
, &ip
, &ileft
, &op
, &oleft
);
835 if (rc
== (size_t)(-1)) {
836 if (errno
== E2BIG
) {
837 int offset
= op
- outbuf
;
838 outbuf
= (char*)realloc(outbuf
, osize
+ size
);
839 op
= outbuf
+ offset
;
843 mp_msg(MSGT_ASS
, MSGL_WARN
, MSGTR_LIBASS_ErrorRecodingFile
);
848 outbuf
[osize
- oleft
- 1] = 0;
851 if (icdsc
!= (iconv_t
)(-1)) {
852 (void)iconv_close(icdsc
);
853 icdsc
= (iconv_t
)(-1);
854 mp_msg(MSGT_ASS
,MSGL_V
,"LIBSUB: closed iconv descriptor.\n");
862 * \brief read file contents into newly allocated buffer
863 * \param fname file name
864 * \param bufsize out: file size
865 * \return pointer to file contents. Caller is responsible for its deallocation.
867 static char* read_file(char* fname
, size_t *bufsize
)
874 FILE* fp
= fopen(fname
, "rb");
876 mp_msg(MSGT_ASS
, MSGL_WARN
, MSGTR_LIBASS_FopenFailed
, fname
);
879 res
= fseek(fp
, 0, SEEK_END
);
881 mp_msg(MSGT_ASS
, MSGL_WARN
, MSGTR_LIBASS_FseekFailed
, fname
);
889 if (sz
> 10*1024*1024) {
890 mp_msg(MSGT_ASS
, MSGL_INFO
, MSGTR_LIBASS_RefusingToLoadSubtitlesLargerThan10M
, fname
);
895 mp_msg(MSGT_ASS
, MSGL_V
, "file size: %ld\n", sz
);
897 buf
= malloc(sz
+ 1);
901 res
= fread(buf
+ bytes_read
, 1, sz
- bytes_read
, fp
);
903 mp_msg(MSGT_ASS
, MSGL_INFO
, MSGTR_LIBASS_ReadFailed
, errno
, strerror(errno
));
909 } while (sz
- bytes_read
> 0);
919 * \param buf pointer to subtitle text in utf-8
921 static ass_track_t
* parse_memory(ass_library_t
* library
, char* buf
)
926 track
= ass_new_track(library
);
929 process_text(track
, buf
);
931 // external SSA/ASS subs does not have ReadOrder field
932 for (i
= 0; i
< track
->n_events
; ++i
)
933 track
->events
[i
].ReadOrder
= i
;
935 // there is no explicit end-of-font marker in ssa/ass
936 if (track
->parser_priv
->fontname
)
939 if (track
->track_type
== TRACK_TYPE_UNKNOWN
) {
940 ass_free_track(track
);
944 process_force_style(track
);
950 * \brief Read subtitles from memory.
951 * \param library libass library object
952 * \param buf pointer to subtitles text
953 * \param bufsize size of buffer
954 * \param codepage recode buffer contents from given codepage
955 * \return newly allocated track
957 ass_track_t
* ass_read_memory(ass_library_t
* library
, char* buf
, size_t bufsize
, char* codepage
)
967 buf
= sub_recode(buf
, bufsize
, codepage
);
973 track
= parse_memory(library
, buf
);
979 mp_msg(MSGT_ASS
, MSGL_INFO
, MSGTR_LIBASS_AddedSubtitleFileMemory
, track
->n_styles
, track
->n_events
);
983 char* read_file_recode(char* fname
, char* codepage
, int* size
)
988 buf
= read_file(fname
, &bufsize
);
993 char* tmpbuf
= sub_recode(buf
, bufsize
, codepage
);
1005 * \brief Read subtitles from file.
1006 * \param library libass library object
1007 * \param fname file name
1008 * \param codepage recode buffer contents from given codepage
1009 * \return newly allocated track
1011 ass_track_t
* ass_read_file(ass_library_t
* library
, char* fname
, char* codepage
)
1017 buf
= read_file_recode(fname
, codepage
, &bufsize
);
1020 track
= parse_memory(library
, buf
);
1025 track
->name
= strdup(fname
);
1027 mp_msg(MSGT_ASS
, MSGL_INFO
, MSGTR_LIBASS_AddedSubtitleFileFname
, fname
, track
->n_styles
, track
->n_events
);
1029 // dump_events(forced_tid);
1034 * \brief read styles from file into already initialized track
1036 int ass_read_styles(ass_track_t
* track
, char* fname
, char* codepage
)
1039 parser_state_t old_state
;
1042 buf
= read_file(fname
, &sz
);
1048 tmpbuf
= sub_recode(buf
, sz
, codepage
);
1056 old_state
= track
->parser_priv
->state
;
1057 track
->parser_priv
->state
= PST_STYLES
;
1058 process_text(track
, buf
);
1059 track
->parser_priv
->state
= old_state
;
1064 long long ass_step_sub(ass_track_t
* track
, long long now
, int movement
) {
1067 if (movement
== 0) return 0;
1068 if (track
->n_events
== 0) return 0;
1071 for (i
= 0; (i
< track
->n_events
) && ((long long)(track
->events
[i
].Start
+ track
->events
[i
].Duration
) <= now
); ++i
) {}
1073 for (i
= track
->n_events
- 1; (i
>= 0) && ((long long)(track
->events
[i
].Start
) > now
); --i
) {}
1075 // -1 and n_events are ok
1076 assert(i
>= -1); assert(i
<= track
->n_events
);
1079 if (i
>= track
->n_events
) i
= track
->n_events
- 1;
1080 return ((long long)track
->events
[i
].Start
) - now
;
1083 ass_track_t
* ass_new_track(ass_library_t
* library
) {
1084 ass_track_t
* track
= calloc(1, sizeof(ass_track_t
));
1085 track
->library
= library
;
1086 track
->parser_priv
= calloc(1, sizeof(parser_priv_t
));