mirror/mpv
0
0
Fork 0
mirror of https://github.com/mpv-player/mpv.git synced 2024-09-20 12:02:23 +02:00
Code
74e7a1e937
mpv/sub/subreader.c
wm4 74e7a1e937 osd: use libass for OSD rendering 
The OSD will now be rendered with libass. The old rendering code, which
used freetype/fontconfig and did text layout manually, is disabled. To
re-enable the old code, use the --disable-libass-osd configure switch.

Some switches do nothing with the new code enabled, such as -subalign,
-sub-bg-alpha, -sub-bg-color, and many more. (The reason is mostly that
the code for rendering unstyled subtitles with libass doesn't make any
attempts to support them. Some of them could be supported in theory.)

Teletext rendering is not implemented in the new OSD rendering code. I
don't have any teletext sources for testing, and since teletext is
being phased out world-wide, the need for this is questionable.

Note that rendering is extremely inefficient, mostly because the libass
output is blended with the extremely strange mplayer OSD format. This
could be improved at a later point.

Remove most OSD rendering from vo_aa.c, because that was extremely
hacky, can't be made work with osd_libass, and didn't work anyway in
my tests.

Internally, some cleanup is done. Subtitle and OSD related variable
declarations were literally all over the place. Move them to sub.h and
sub.c, which were hoarding most of these declarations already. Make the
player core in mplayer.c free of concerns like bitmap font loading.

The old OSD rendering code has been moved to osd_ft.c. The font_load.c
and font_load_ft.c are only needed and compiled if the old OSD
rendering code is configured.
2012-07-28 23:36:07 +02:00

2238 lines
65 KiB
C
Raw Blame History

/*
* Subtitle reader with format autodetection
*
* Copyright (c) 2001 laaz
* Some code cleanup & realloc() by A'rpi/ESP-team
*
* This file is part of MPlayer.
*
* MPlayer 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
* (at your option) any later version.
*
* MPlayer 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.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include "config.h"
#include "mp_msg.h"
#include "subreader.h"
#include "mpcommon.h"
#include "subassconvert.h"
#include "options.h"
#include "stream/stream.h"
#include "libavutil/common.h"
#include "libavutil/avstring.h"
#ifdef CONFIG_ENCA
#include <enca.h>
#endif
#define ERR ((void *) -1)
#ifdef CONFIG_ICONV
#include <iconv.h>
char *sub_cp=NULL;
#endif
#ifdef CONFIG_FRIBIDI
#include <fribidi/fribidi.h>
char *fribidi_charset = NULL; ///character set that will be passed to FriBiDi
int flip_hebrew = 1; ///flip subtitles using fribidi
int fribidi_flip_commas = 0; ///flip comma when fribidi is used
#endif
int suboverlap_enabled = 1;
// Parameter struct for the format-specific readline functions
struct readline_args {
int utf16;
struct MPOpts *opts;
};
/* Maximal length of line of a subtitle */
#define LINE_LEN 1000
static float mpsub_position=0;
static float mpsub_multiplier=1.;
static int sub_slacktime = 20000; //20 sec
int sub_no_text_pp=0; // 1 => do not apply text post-processing
// like {\...} elimination in SSA format.
int sub_match_fuzziness=0; // level of sub name matching fuzziness
/* Use the SUB_* constant defined in the header file */
int sub_format=SUB_INVALID;
#ifdef CONFIG_SORTSUB
/*
Some subtitling formats, namely AQT and Subrip09, define the end of a
subtitle as the beginning of the following. Since currently we read one
subtitle at time, for these format we keep two global *subtitle,
previous_aqt_sub and previous_subrip09_sub, pointing to previous subtitle,
so we can change its end when we read current subtitle starting time.
When CONFIG_SORTSUB is defined, we use a single global unsigned long,
previous_sub_end, for both (and even future) formats, to store the end of
the previous sub: it is initialized to 0 in sub_read_file and eventually
modified by sub_read_aqt_line or sub_read_subrip09_line.
*/
unsigned long previous_sub_end;
#endif
static int eol(char p) {
return p=='\r' || p=='\n' || p=='\0';
}
/* Remove leading and trailing space */
static void trail_space(char *s) {
int i = 0;
while (isspace(s[i])) ++i;
if (i) strcpy(s, s + i);
i = strlen(s) - 1;
while (i > 0 && isspace(s[i])) s[i--] = '\0';
}
static char *stristr(const char *haystack, const char *needle) {
int len = 0;
const char *p = haystack;
if (!(haystack && needle)) return NULL;
len=strlen(needle);
while (*p != '\0') {
if (strncasecmp(p, needle, len) == 0) return (char*)p;
p++;
}
return NULL;
}
static void sami_add_line(subtitle *current, char *buffer, char **pos) {
char *p = *pos;
*p = 0;
trail_space(buffer);
if (*buffer && current->lines < SUB_MAX_TEXT)
current->text[current->lines++] = strdup(buffer);
*pos = buffer;
}
static subtitle *sub_read_line_sami(stream_t* st, subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
static char line[LINE_LEN+1];
static char *s = NULL, *slacktime_s;
char text[LINE_LEN+1], *p=NULL, *q;
int state;
current->lines = current->start = current->end = 0;
current->alignment = SUB_ALIGNMENT_BOTTOMCENTER;
state = 0;
/* read the first line */
if (!s)
if (!(s = stream_read_line(st, line, LINE_LEN, utf16))) return 0;
do {
switch (state) {
case 0: /* find "START=" or "Slacktime:" */
slacktime_s = stristr (s, "Slacktime:");
if (slacktime_s)
sub_slacktime = strtol (slacktime_s+10, NULL, 0) / 10;
s = stristr (s, "Start=");
if (s) {
current->start = strtol (s + 6, &s, 0) / 10;
/* eat '>' */
for (; *s != '>' && *s != '\0'; s++);
s++;
state = 1; continue;
}
break;
case 1: /* find (optional) "<P", skip other TAGs */
for (; *s == ' ' || *s == '\t'; s++); /* strip blanks, if any */
if (*s == '\0') break;
if (*s != '<') { state = 3; p = text; continue; } /* not a TAG */
s++;
if (*s == 'P' || *s == 'p') { s++; state = 2; continue; } /* found '<P' */
for (; *s != '>' && *s != '\0'; s++); /* skip remains of non-<P> TAG */
if (s == '\0')
break;
s++;
continue;
case 2: /* find ">" */
if ((s = strchr (s, '>'))) { s++; state = 3; p = text; continue; }
break;
case 3: /* get all text until '<' appears */
if (p - text >= LINE_LEN)
sami_add_line(current, text, &p);
if (*s == '\0') break;
else if (!strncasecmp (s, "<br>", 4)) {
sami_add_line(current, text, &p);
s += 4;
}
else if ((*s == '{') && !sub_no_text_pp) { state = 5; ++s; continue; }
else if (*s == '<') { state = 4; }
else if (!strncasecmp (s, "&nbsp;", 6)) { *p++ = ' '; s += 6; }
else if (*s == '\t') { *p++ = ' '; s++; }
else if (*s == '\r' || *s == '\n') { s++; }
else *p++ = *s++;
/* skip duplicated space */
if (p > text + 2) if (*(p-1) == ' ' && *(p-2) == ' ') p--;
continue;
case 4: /* get current->end or skip <TAG> */
q = stristr (s, "Start=");
if (q) {
current->end = strtol (q + 6, &q, 0) / 10 - 1;
*p = '\0'; trail_space (text);
if (text[0] != '\0')
current->text[current->lines++] = strdup (text);
if (current->lines > 0) { state = 99; break; }
state = 0; continue;
}
s = strchr (s, '>');
if (s) { s++; state = 3; continue; }
break;
case 5: /* get rid of {...} text, but read the alignment code */
if ((*s == '\\') && (*(s + 1) == 'a') && !sub_no_text_pp) {
if (stristr(s, "\\a1") != NULL) {
current->alignment = SUB_ALIGNMENT_BOTTOMLEFT;
s = s + 3;
}
if (stristr(s, "\\a2") != NULL) {
current->alignment = SUB_ALIGNMENT_BOTTOMCENTER;
s = s + 3;
} else if (stristr(s, "\\a3") != NULL) {
current->alignment = SUB_ALIGNMENT_BOTTOMRIGHT;
s = s + 3;
} else if ((stristr(s, "\\a4") != NULL) || (stristr(s, "\\a5") != NULL) || (stristr(s, "\\a8") != NULL)) {
current->alignment = SUB_ALIGNMENT_TOPLEFT;
s = s + 3;
} else if (stristr(s, "\\a6") != NULL) {
current->alignment = SUB_ALIGNMENT_TOPCENTER;
s = s + 3;
} else if (stristr(s, "\\a7") != NULL) {
current->alignment = SUB_ALIGNMENT_TOPRIGHT;
s = s + 3;
} else if (stristr(s, "\\a9") != NULL) {
current->alignment = SUB_ALIGNMENT_MIDDLELEFT;
s = s + 3;
} else if (stristr(s, "\\a10") != NULL) {
current->alignment = SUB_ALIGNMENT_MIDDLECENTER;
s = s + 4;
} else if (stristr(s, "\\a11") != NULL) {
current->alignment = SUB_ALIGNMENT_MIDDLERIGHT;
s = s + 4;
}
}
if (*s == '}') state = 3;
++s;
continue;
}
/* read next line */
if (state != 99 && !(s = stream_read_line (st, line, LINE_LEN, utf16))) {
if (current->start > 0) {
break; // if it is the last subtitle
} else {
return 0;
}
}
} while (state != 99);
// For the last subtitle
if (current->end <= 0) {
current->end = current->start + sub_slacktime;
sami_add_line(current, text, &p);
}
return current;
}
static char *sub_readtext(char *source, char **dest) {
int len=0;
char *p=source;
// printf("src=%p dest=%p \n",source,dest);
while ( !eol(*p) && *p!= '|' ) {
p++,len++;
}
*dest= malloc (len+1);
if (!dest) {return ERR;}
strncpy(*dest, source, len);
(*dest)[len]=0;
while (*p=='\r' || *p=='\n' || *p=='|') p++;
if (*p) return p; // not-last text field
else return NULL; // last text field
}
static subtitle *sub_read_line_microdvd(stream_t *st,subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line[LINE_LEN+1];
char line2[LINE_LEN+1];
char *p, *next;
int i;
do {
if (!stream_read_line (st, line, LINE_LEN, utf16)) return NULL;
} while ((sscanf (line,
"{%ld}{}%[^\r\n]",
&(current->start), line2) < 2) &&
(sscanf (line,
"{%ld}{%ld}%[^\r\n]",
&(current->start), &(current->end), line2) < 3));
if (args->opts->ass_enabled) {
subassconvert_microdvd(line2, line, LINE_LEN + 1);
p = line;
} else
p = line2;
next=p, i=0;
while ((next =sub_readtext (next, &(current->text[i])))) {
if (current->text[i]==ERR) {return ERR;}
i++;
if (i>=SUB_MAX_TEXT) { mp_msg(MSGT_SUBREADER,MSGL_WARN,"Too many lines in a subtitle\n");current->lines=i;return current;}
}
current->lines= ++i;
return current;
}
static subtitle *sub_read_line_mpl2(stream_t *st,subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line[LINE_LEN+1];
char line2[LINE_LEN+1];
char *p, *next;
int i;
do {
if (!stream_read_line (st, line, LINE_LEN, utf16)) return NULL;
} while ((sscanf (line,
"[%ld][%ld]%[^\r\n]",
&(current->start), &(current->end), line2) < 3));
current->start *= 10;
current->end *= 10;
p=line2;
next=p, i=0;
while ((next =sub_readtext (next, &(current->text[i])))) {
if (current->text[i]==ERR) {return ERR;}
i++;
if (i>=SUB_MAX_TEXT) { mp_msg(MSGT_SUBREADER,MSGL_WARN,"Too many lines in a subtitle\n");current->lines=i;return current;}
}
current->lines= ++i;
return current;
}
static subtitle *sub_read_line_subrip(stream_t* st, subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line[LINE_LEN+1];
int a1,a2,a3,a4,b1,b2,b3,b4;
char *p=NULL, *q=NULL;
int len;
while (1) {
if (!stream_read_line (st, line, LINE_LEN, utf16)) return NULL;
if (sscanf (line, "%d:%d:%d.%d,%d:%d:%d.%d",&a1,&a2,&a3,&a4,&b1,&b2,&b3,&b4) < 8) continue;
current->start = a1*360000+a2*6000+a3*100+a4;
current->end = b1*360000+b2*6000+b3*100+b4;
if (!stream_read_line (st, line, LINE_LEN, utf16)) return NULL;
p=q=line;
for (current->lines=1; current->lines < SUB_MAX_TEXT; current->lines++) {
for (q=p,len=0; *p && *p!='\r' && *p!='\n' && *p!='|' && strncmp(p,"[br]",4); p++,len++);
current->text[current->lines-1]=malloc (len+1);
if (!current->text[current->lines-1]) return ERR;
strncpy (current->text[current->lines-1], q, len);
current->text[current->lines-1][len]='\0';
if (!*p || *p=='\r' || *p=='\n') break;
if (*p=='|') p++;
else while (*p++!=']');
}
break;
}
return current;
}
static subtitle *sub_ass_read_line_subviewer(stream_t *st, subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
int a1, a2, a3, a4, b1, b2, b3, b4, j = 0;
while (!current->text[0]) {
char line[LINE_LEN + 1], full_line[LINE_LEN + 1], sep;
int i;
/* Parse SubRip header */
if (!stream_read_line(st, line, LINE_LEN, utf16))
return NULL;
if (sscanf(line, "%d:%d:%d%[,.:]%d --> %d:%d:%d%[,.:]%d",
&a1, &a2, &a3, &sep, &a4, &b1, &b2, &b3, &sep, &b4) < 10)
continue;
current->start = a1 * 360000 + a2 * 6000 + a3 * 100 + a4 / 10;
current->end = b1 * 360000 + b2 * 6000 + b3 * 100 + b4 / 10;
/* Concat lines */
full_line[0] = 0;
for (i = 0; i < SUB_MAX_TEXT; i++) {
int blank = 1, len = 0;
char *p;
if (!stream_read_line(st, line, LINE_LEN, utf16))
break;
for (p = line; *p != '\n' && *p != '\r' && *p; p++, len++)
if (*p != ' ' && *p != '\t')
blank = 0;
if (blank)
break;
*p = 0;
if (!(j + 1 + len < sizeof(full_line) - 1))
break;
if (j != 0)
full_line[j++] = '\n';
strcpy(&full_line[j], line);
j += len;
}
/* Use the ASS/SSA converter to transform the whole lines */
if (full_line[0]) {
char converted_line[LINE_LEN + 1];
subassconvert_subrip(full_line, converted_line, LINE_LEN + 1);
current->text[0] = strdup(converted_line);
current->lines = 1;
}
}
return current;
}
static subtitle *sub_read_line_subviewer(stream_t *st,subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line[LINE_LEN+1];
int a1,a2,a3,a4,b1,b2,b3,b4;
char *p=NULL;
int i,len;
if (args->opts->ass_enabled)
return sub_ass_read_line_subviewer(st, current, args);
while (!current->text[0]) {
if (!stream_read_line (st, line, LINE_LEN, utf16)) return NULL;
if ((len=sscanf (line, "%d:%d:%d%[,.:]%d --> %d:%d:%d%[,.:]%d",&a1,&a2,&a3,(char *)&i,&a4,&b1,&b2,&b3,(char *)&i,&b4)) < 10)
continue;
current->start = a1*360000+a2*6000+a3*100+a4/10;
current->end = b1*360000+b2*6000+b3*100+b4/10;
for (i=0; i<SUB_MAX_TEXT;) {
int blank = 1;
if (!stream_read_line (st, line, LINE_LEN, utf16)) break;
len=0;
for (p=line; *p!='\n' && *p!='\r' && *p; p++,len++)
if (*p != ' ' && *p != '\t')
blank = 0;
if (len && !blank) {
int j=0,skip=0;
char *curptr=current->text[i]=malloc (len+1);
if (!current->text[i]) return ERR;
//strncpy (current->text[i], line, len); current->text[i][len]='\0';
for(; j<len; j++) {
/* let's filter html tags ::atmos */
if(line[j]=='>') {
skip=0;
continue;
}
if(line[j]=='<') {
skip=1;
continue;
}
if(skip) {
continue;
}
*curptr=line[j];
curptr++;
}
*curptr='\0';
i++;
} else {
break;
}
}
current->lines=i;
}
return current;
}
static subtitle *sub_read_line_subviewer2(stream_t *st,subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line[LINE_LEN+1];
int a1,a2,a3,a4;
char *p=NULL;
int i,len;
while (!current->text[0]) {
if (!stream_read_line (st, line, LINE_LEN, utf16)) return NULL;
if (line[0]!='{')
continue;
if ((len=sscanf (line, "{T %d:%d:%d:%d",&a1,&a2,&a3,&a4)) < 4)
continue;
current->start = a1*360000+a2*6000+a3*100+a4/10;
for (i=0; i<SUB_MAX_TEXT;) {
if (!stream_read_line (st, line, LINE_LEN, utf16)) break;
if (line[0]=='}') break;
len=0;
for (p=line; *p!='\n' && *p!='\r' && *p; ++p,++len);
if (len) {
current->text[i]=malloc (len+1);
if (!current->text[i]) return ERR;
strncpy (current->text[i], line, len); current->text[i][len]='\0';
++i;
} else {
break;
}
}
current->lines=i;
}
return current;
}
static subtitle *sub_read_line_vplayer(stream_t *st,subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line[LINE_LEN+1];
int a1,a2,a3;
char *p=NULL, *next,separator;
int i,len,plen;
while (!current->text[0]) {
if (!stream_read_line (st, line, LINE_LEN, utf16)) return NULL;
if ((len=sscanf (line, "%d:%d:%d%c%n",&a1,&a2,&a3,&separator,&plen)) < 4)
continue;
if (!(current->start = a1*360000+a2*6000+a3*100))
continue;
/* removed by wodzu
p=line;
// finds the body of the subtitle
for (i=0; i<3; i++){
p=strchr(p,':');
if (p==NULL) break;
++p;
}
if (p==NULL) {
printf("SUB: Skipping incorrect subtitle line!\n");
continue;
}
*/
// by wodzu: hey! this time we know what length it has! what is
// that magic for? it can't deal with space instead of third
// colon! look, what simple it can be:
p = &line[ plen ];
i=0;
if (*p!='|') {
//
next = p,i=0;
while ((next =sub_readtext (next, &(current->text[i])))) {
if (current->text[i]==ERR) {return ERR;}
i++;
if (i>=SUB_MAX_TEXT) { mp_msg(MSGT_SUBREADER,MSGL_WARN,"Too many lines in a subtitle\n");current->lines=i;return current;}
}
current->lines=i+1;
}
}
return current;
}
static subtitle *sub_read_line_rt(stream_t *st,subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
//TODO: This format uses quite rich (sub/super)set of xhtml
// I couldn't check it since DTD is not included.
// WARNING: full XML parses can be required for proper parsing
char line[LINE_LEN+1];
int a1,a2,a3,a4,b1,b2,b3,b4;
char *p=NULL,*next=NULL;
int i,len,plen;
while (!current->text[0]) {
if (!stream_read_line (st, line, LINE_LEN, utf16)) return NULL;
//TODO: it seems that format of time is not easily determined, it may be 1:12, 1:12.0 or 0:1:12.0
//to describe the same moment in time. Maybe there are even more formats in use.
//if ((len=sscanf (line, "<Time Begin=\"%d:%d:%d.%d\" End=\"%d:%d:%d.%d\"",&a1,&a2,&a3,&a4,&b1,&b2,&b3,&b4)) < 8)
plen=a1=a2=a3=a4=b1=b2=b3=b4=0;
if (
((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d.%d\" %*[Ee]nd=\"%d.%d\"%*[^<]<clear/>%n",&a3,&a4,&b3,&b4,&plen)) < 4) &&
((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d.%d\" %*[Ee]nd=\"%d:%d.%d\"%*[^<]<clear/>%n",&a3,&a4,&b2,&b3,&b4,&plen)) < 5) &&
((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d:%d\" %*[Ee]nd=\"%d:%d\"%*[^<]<clear/>%n",&a2,&a3,&b2,&b3,&plen)) < 4) &&
((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d:%d\" %*[Ee]nd=\"%d:%d.%d\"%*[^<]<clear/>%n",&a2,&a3,&b2,&b3,&b4,&plen)) < 5) &&
// ((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d:%d.%d\" %*[Ee]nd=\"%d:%d\"%*[^<]<clear/>%n",&a2,&a3,&a4,&b2,&b3,&plen)) < 5) &&
((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d:%d.%d\" %*[Ee]nd=\"%d:%d.%d\"%*[^<]<clear/>%n",&a2,&a3,&a4,&b2,&b3,&b4,&plen)) < 6) &&
((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d:%d:%d.%d\" %*[Ee]nd=\"%d:%d:%d.%d\"%*[^<]<clear/>%n",&a1,&a2,&a3,&a4,&b1,&b2,&b3,&b4,&plen)) < 8) &&
//now try it without end time
((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d.%d\"%*[^<]<clear/>%n",&a3,&a4,&plen)) < 2) &&
((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d:%d\"%*[^<]<clear/>%n",&a2,&a3,&plen)) < 2) &&
((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d:%d.%d\"%*[^<]<clear/>%n",&a2,&a3,&a4,&plen)) < 3) &&
((len=sscanf (line, "<%*[tT]ime %*[bB]egin=\"%d:%d:%d.%d\"%*[^<]<clear/>%n",&a1,&a2,&a3,&a4,&plen)) < 4)
)
continue;
current->start = a1*360000+a2*6000+a3*100+a4/10;
current->end = b1*360000+b2*6000+b3*100+b4/10;
if (b1 == 0 && b2 == 0 && b3 == 0 && b4 == 0)
current->end = current->start+200;
p=line; p+=plen;i=0;
// TODO: I don't know what kind of convention is here for marking multiline subs, maybe <br/> like in xml?
next = strstr(line,"<clear/>");
if(next && strlen(next)>8){
next+=8;i=0;
while ((next =sub_readtext (next, &(current->text[i])))) {
if (current->text[i]==ERR) {return ERR;}
i++;
if (i>=SUB_MAX_TEXT) { mp_msg(MSGT_SUBREADER,MSGL_WARN,"Too many lines in a subtitle\n");current->lines=i;return current;}
}
}
current->lines=i+1;
}
return current;
}
static subtitle *sub_read_line_ssa(stream_t *st,subtitle *current,
struct readline_args *args)
{
/*
* Sub Station Alpha v4 (and v2?) scripts have 9 commas before subtitle
* other Sub Station Alpha scripts have only 8 commas before subtitle
* Reading the "ScriptType:" field is not reliable since many scripts appear
* w/o it
*
* http://www.scriptclub.org is a good place to find more examples
* http://www.eswat.demon.co.uk is where the SSA specs can be found
*/
int utf16 = args->utf16;
int comma;
static int max_comma = 32; /* let's use 32 for the case that the */
/* amount of commas increase with newer SSA versions */
int hour1, min1, sec1, hunsec1,
hour2, min2, sec2, hunsec2, nothing;
int num;
char line[LINE_LEN+1],
line3[LINE_LEN+1],
*line2;
char *tmp;
do {
if (!stream_read_line (st, line, LINE_LEN, utf16)) return NULL;
} while (sscanf (line, "Dialogue: Marked=%d,%d:%d:%d.%d,%d:%d:%d.%d"
"%[^\n\r]", &nothing,
&hour1, &min1, &sec1, &hunsec1,
&hour2, &min2, &sec2, &hunsec2,
line3) < 9
&&
sscanf (line, "Dialogue: %d,%d:%d:%d.%d,%d:%d:%d.%d"
"%[^\n\r]", &nothing,
&hour1, &min1, &sec1, &hunsec1,
&hour2, &min2, &sec2, &hunsec2,
line3) < 9 );
line2=strchr(line3, ',');
if (!line2) return NULL;
for (comma = 4; comma < max_comma; comma ++)
{
tmp = line2;
if(!(tmp=strchr(++tmp, ','))) break;
if(*(++tmp) == ' ') break;
/* a space after a comma means we're already in a sentence */
line2 = tmp;
}
if(comma < max_comma)max_comma = comma;
/* eliminate the trailing comma */
if(*line2 == ',') line2++;
current->lines=0;num=0;
current->start = 360000*hour1 + 6000*min1 + 100*sec1 + hunsec1;
current->end = 360000*hour2 + 6000*min2 + 100*sec2 + hunsec2;
while (((tmp=strstr(line2, "\\n")) != NULL) || ((tmp=strstr(line2, "\\N")) != NULL) ){
current->text[num]=malloc(tmp-line2+1);
strncpy (current->text[num], line2, tmp-line2);
current->text[num][tmp-line2]='\0';
line2=tmp+2;
num++;
current->lines++;
if (current->lines >= SUB_MAX_TEXT) return current;
}
current->text[num]=strdup(line2);
current->lines++;
return current;
}
static void sub_pp_ssa(subtitle *sub) {
int l=sub->lines;
char *so,*de,*start;
while (l){
/* eliminate any text enclosed with {}, they are font and color settings */
so=de=sub->text[--l];
while (*so) {
if(*so == '{' && so[1]=='\\') {
for (start=so; *so && *so!='}'; so++);
if(*so) so++; else so=start;
}
if(*so) {
*de=*so;
so++; de++;
}
}
*de=*so;
}
}
/*
* PJS subtitles reader.
* That's the "Phoenix Japanimation Society" format.
* I found some of them in http://www.scriptsclub.org/ (used for anime).
* The time is in tenths of second.
*
* by set, based on code by szabi (dunnowhat sub format ;-)
*/
static subtitle *sub_read_line_pjs(stream_t *st,subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line[LINE_LEN+1];
char text[LINE_LEN+1], *s, *d;
if (!stream_read_line (st, line, LINE_LEN, utf16))
return NULL;
/* skip spaces */
for (s=line; *s && isspace(*s); s++);
/* allow empty lines at the end of the file */
if (*s==0)
return NULL;
/* get the time */
if (sscanf (s, "%ld,%ld,", &(current->start),
&(current->end)) <2) {
return ERR;
}
/* the files I have are in tenths of second */
current->start *= 10;
current->end *= 10;
/* walk to the beggining of the string */
for (; *s; s++) if (*s==',') break;
if (*s) {
for (s++; *s; s++) if (*s==',') break;
if (*s) s++;
}
if (*s!='"') {
return ERR;
}
/* copy the string to the text buffer */
for (s++, d=text; *s && *s!='"'; s++, d++)
*d=*s;
*d=0;
current->text[0] = strdup(text);
current->lines = 1;
return current;
}
static subtitle *sub_read_line_mpsub(stream_t *st, subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line[LINE_LEN+1];
float a,b;
int num=0;
char *p, *q;
do
{
if (!stream_read_line(st, line, LINE_LEN, utf16)) return NULL;
} while (sscanf (line, "%f %f", &a, &b) !=2);
mpsub_position += a*mpsub_multiplier;
current->start=(int) mpsub_position;
mpsub_position += b*mpsub_multiplier;
current->end=(int) mpsub_position;
while (num < SUB_MAX_TEXT) {
if (!stream_read_line (st, line, LINE_LEN, utf16)) {
if (num == 0) return NULL;
else return current;
}
p=line;
while (isspace(*p)) p++;
if (eol(*p) && num > 0) return current;
if (eol(*p)) return NULL;
for (q=p; !eol(*q); q++);
*q='\0';
if (strlen(p)) {
current->text[num]=strdup(p);
// printf (">%s<\n",p);
current->lines = ++num;
} else {
if (num) return current;
else return NULL;
}
}
return NULL; // we should have returned before if it's OK
}
#ifndef CONFIG_SORTSUB
//we don't need this if we use previous_sub_end
subtitle *previous_aqt_sub = NULL;
#endif
static subtitle *sub_read_line_aqt(stream_t *st,subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line[LINE_LEN+1];
char *next;
int i;
while (1) {
// try to locate next subtitle
if (!stream_read_line (st, line, LINE_LEN, utf16))
return NULL;
if (!(sscanf (line, "-->> %ld", &(current->start)) <1))
break;
}
#ifdef CONFIG_SORTSUB
previous_sub_end = (current->start) ? current->start - 1 : 0;
#else
if (previous_aqt_sub != NULL)
previous_aqt_sub->end = current->start-1;
previous_aqt_sub = current;
#endif
if (!stream_read_line (st, line, LINE_LEN, utf16))
return NULL;
sub_readtext((char *) &line,&current->text[0]);
current->lines = 1;
current->end = current->start; // will be corrected by next subtitle
if (!stream_read_line (st, line, LINE_LEN, utf16))
return current;
next = line,i=1;
while ((next =sub_readtext (next, &(current->text[i])))) {
if (current->text[i]==ERR) {return ERR;}
i++;
if (i>=SUB_MAX_TEXT) { mp_msg(MSGT_SUBREADER,MSGL_WARN,"Too many lines in a subtitle\n");current->lines=i;return current;}
}
current->lines=i+1;
if (!strlen(current->text[0]) && !strlen(current->text[1])) {
#ifdef CONFIG_SORTSUB
previous_sub_end = 0;
#else
// void subtitle -> end of previous marked and exit
previous_aqt_sub = NULL;
#endif
return NULL;
}
return current;
}
#ifndef CONFIG_SORTSUB
subtitle *previous_subrip09_sub = NULL;
#endif
static subtitle *sub_read_line_subrip09(stream_t *st,subtitle *current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line[LINE_LEN+1];
int a1,a2,a3;
char * next=NULL;
int i,len;
while (1) {
// try to locate next subtitle
if (!stream_read_line (st, line, LINE_LEN, utf16))
return NULL;
if (!((len=sscanf (line, "[%d:%d:%d]",&a1,&a2,&a3)) < 3))
break;
}
current->start = a1*360000+a2*6000+a3*100;
#ifdef CONFIG_SORTSUB
previous_sub_end = (current->start) ? current->start - 1 : 0;
#else
if (previous_subrip09_sub != NULL)
previous_subrip09_sub->end = current->start-1;
previous_subrip09_sub = current;
#endif
if (!stream_read_line (st, line, LINE_LEN, utf16))
return NULL;
next = line,i=0;
current->text[0]=""; // just to be sure that string is clear
while ((next =sub_readtext (next, &(current->text[i])))) {
if (current->text[i]==ERR) {return ERR;}
i++;
if (i>=SUB_MAX_TEXT) { mp_msg(MSGT_SUBREADER,MSGL_WARN,"Too many lines in a subtitle\n");current->lines=i;return current;}
}
current->lines=i+1;
if (!strlen(current->text[0]) && (i==0)) {
#ifdef CONFIG_SORTSUB
previous_sub_end = 0;
#else
// void subtitle -> end of previous marked and exit
previous_subrip09_sub = NULL;
#endif
return NULL;
}
return current;
}
static subtitle *sub_read_line_jacosub(stream_t* st, subtitle * current,
struct readline_args *args)
{
int utf16 = args->utf16;
char line1[LINE_LEN], line2[LINE_LEN], directive[LINE_LEN], *p, *q;
unsigned a1, a2, a3, a4, b1, b2, b3, b4, comment = 0;
static unsigned jacoTimeres = 30;
static int jacoShift = 0;
memset(current, 0, sizeof(subtitle));
memset(line1, 0, LINE_LEN);
memset(line2, 0, LINE_LEN);
memset(directive, 0, LINE_LEN);
while (!current->text[0]) {
if (!stream_read_line(st, line1, LINE_LEN, utf16)) {
return NULL;
}
if (sscanf
(line1, "%u:%u:%u.%u %u:%u:%u.%u %[^\n\r]", &a1, &a2, &a3, &a4,
&b1, &b2, &b3, &b4, line2) < 9) {
if (sscanf(line1, "@%u @%u %[^\n\r]", &a4, &b4, line2) < 3) {
if (line1[0] == '#') {
int hours = 0, minutes = 0, seconds, delta, inverter =
1;
unsigned units = jacoShift;
switch (toupper(line1[1])) {
case 'S':
if (isalpha(line1[2])) {
delta = 6;
} else {
delta = 2;
}
if (sscanf(&line1[delta], "%d", &hours)) {
if (hours < 0) {
hours *= -1;
inverter = -1;
}
if (sscanf(&line1[delta], "%*d:%d", &minutes)) {
if (sscanf
(&line1[delta], "%*d:%*d:%d",
&seconds)) {
sscanf(&line1[delta], "%*d:%*d:%*d.%d",
&units);
} else {
hours = 0;
sscanf(&line1[delta], "%d:%d.%d",
&minutes, &seconds, &units);
minutes *= inverter;
}
} else {
hours = minutes = 0;
sscanf(&line1[delta], "%d.%d", &seconds,
&units);
seconds *= inverter;
}
jacoShift =
((hours * 3600 + minutes * 60 +
seconds) * jacoTimeres +
units) * inverter;
}
break;
case 'T':
if (isalpha(line1[2])) {
delta = 8;
} else {
delta = 2;
}
sscanf(&line1[delta], "%u", &jacoTimeres);
break;
}
}
continue;
} else {
current->start =
(unsigned long) ((a4 + jacoShift) * 100.0 /
jacoTimeres);
current->end =
(unsigned long) ((b4 + jacoShift) * 100.0 /
jacoTimeres);
}
} else {
current->start =
(unsigned
long) (((a1 * 3600 + a2 * 60 + a3) * jacoTimeres + a4 +
jacoShift) * 100.0 / jacoTimeres);
current->end =
(unsigned
long) (((b1 * 3600 + b2 * 60 + b3) * jacoTimeres + b4 +
jacoShift) * 100.0 / jacoTimeres);
}
current->lines = 0;
p = line2;
while ((*p == ' ') || (*p == '\t')) {
++p;
}
if (isalpha(*p)||*p == '[') {
int cont, jLength;
if (sscanf(p, "%s %[^\n\r]", directive, line1) < 2)
return (subtitle *) ERR;
jLength = strlen(directive);
for (cont = 0; cont < jLength; ++cont) {
if (isalpha(*(directive + cont)))
*(directive + cont) = toupper(*(directive + cont));
}
if ((strstr(directive, "RDB") != NULL)
|| (strstr(directive, "RDC") != NULL)
|| (strstr(directive, "RLB") != NULL)
|| (strstr(directive, "RLG") != NULL)) {
continue;
}
if (strstr(directive, "JL") != NULL) {
current->alignment = SUB_ALIGNMENT_BOTTOMLEFT;
} else if (strstr(directive, "JR") != NULL) {
current->alignment = SUB_ALIGNMENT_BOTTOMRIGHT;
} else {
current->alignment = SUB_ALIGNMENT_BOTTOMCENTER;
}
strcpy(line2, line1);
p = line2;
}
for (q = line1; (!eol(*p)) && (current->lines < SUB_MAX_TEXT); ++p) {
switch (*p) {
case '{':
comment++;
break;
case '}':
if (comment) {
--comment;
//the next line to get rid of a blank after the comment
if ((*(p + 1)) == ' ')
p++;
}
break;
case '~':
if (!comment) {
*q = ' ';
++q;
}
break;
case ' ':
case '\t':
if ((*(p + 1) == ' ') || (*(p + 1) == '\t'))
break;
if (!comment) {
*q = ' ';
++q;
}
break;
case '\\':
if (*(p + 1) == 'n') {
*q = '\0';
q = line1;
current->text[current->lines++] = strdup(line1);
++p;
break;
}
if ((toupper(*(p + 1)) == 'C')
|| (toupper(*(p + 1)) == 'F')) {
++p,++p;
break;
}
if ((*(p + 1) == 'B') || (*(p + 1) == 'b') || (*(p + 1) == 'D') || //actually this means "insert current date here"
(*(p + 1) == 'I') || (*(p + 1) == 'i') || (*(p + 1) == 'N') || (*(p + 1) == 'T') || //actually this means "insert current time here"
(*(p + 1) == 'U') || (*(p + 1) == 'u')) {
++p;
break;
}
if ((*(p + 1) == '\\') ||
(*(p + 1) == '~') || (*(p + 1) == '{')) {
++p;
} else if (eol(*(p + 1))) {
if (!stream_read_line(st, directive, LINE_LEN, utf16))
return NULL;
trail_space(directive);
av_strlcat(line2, directive, LINE_LEN);
break;
}
default:
if (!comment) {
*q = *p;
++q;
}
} //-- switch
} //-- for
*q = '\0';
current->text[current->lines] = strdup(line1);
} //-- while
current->lines++;
return current;
}
static int sub_autodetect (stream_t* st, int *uses_time, int utf16) {
char line[LINE_LEN+1];
int i,j=0;
while (j < 100) {
j++;
if (!stream_read_line (st, line, LINE_LEN, utf16))
return SUB_INVALID;
if (sscanf (line, "{%d}{%d}", &i, &i)==2)
{*uses_time=0;return SUB_MICRODVD;}
if (sscanf (line, "{%d}{}", &i)==1)
{*uses_time=0;return SUB_MICRODVD;}
if (sscanf (line, "[%d][%d]", &i, &i)==2)
{*uses_time=1;return SUB_MPL2;}
if (sscanf (line, "%d:%d:%d.%d,%d:%d:%d.%d", &i, &i, &i, &i, &i, &i, &i, &i)==8)
{*uses_time=1;return SUB_SUBRIP;}
if (sscanf (line, "%d:%d:%d%[,.:]%d --> %d:%d:%d%[,.:]%d", &i, &i, &i, (char *)&i, &i, &i, &i, &i, (char *)&i, &i)==10)
{*uses_time=1;return SUB_SUBVIEWER;}
if (sscanf (line, "{T %d:%d:%d:%d",&i, &i, &i, &i)==4)
{*uses_time=1;return SUB_SUBVIEWER2;}
if (strstr (line, "<SAMI>"))
{*uses_time=1; return SUB_SAMI;}
if (sscanf(line, "%d:%d:%d.%d %d:%d:%d.%d", &i, &i, &i, &i, &i, &i, &i, &i) == 8)
{*uses_time = 1; return SUB_JACOSUB;}
if (sscanf(line, "@%d @%d", &i, &i) == 2)
{*uses_time = 1; return SUB_JACOSUB;}
if (sscanf (line, "%d:%d:%d:", &i, &i, &i )==3)
{*uses_time=1;return SUB_VPLAYER;}
if (sscanf (line, "%d:%d:%d ", &i, &i, &i )==3)
{*uses_time=1;return SUB_VPLAYER;}
if (!strncasecmp(line, "<window", 7))
{*uses_time=1;return SUB_RT;}
if (!memcmp(line, "Dialogue: Marked", 16))
{*uses_time=1; return SUB_SSA;}
if (!memcmp(line, "Dialogue: ", 10))
{*uses_time=1; return SUB_SSA;}
if (sscanf (line, "%d,%d,\"%c", &i, &i, (char *) &i) == 3)
{*uses_time=1;return SUB_PJS;}
if (sscanf (line, "FORMAT=%d", &i) == 1)
{*uses_time=0; return SUB_MPSUB;}
if (!memcmp(line, "FORMAT=TIME", 11))
{*uses_time=1; return SUB_MPSUB;}
if (strstr (line, "-->>"))
{*uses_time=0; return SUB_AQTITLE;}
if (sscanf (line, "[%d:%d:%d]", &i, &i, &i)==3)
{*uses_time=1;return SUB_SUBRIP09;}
}
return SUB_INVALID; // too many bad lines
}
extern int sub_utf8;
int sub_utf8_prev=0;
extern float sub_delay;
extern float sub_fps;
#ifdef CONFIG_ICONV
static iconv_t icdsc = (iconv_t)(-1);
void subcp_open (stream_t *st)
{
char *tocp = "UTF-8";
if (sub_cp){
const char *cp_tmp = sub_cp;
#ifdef CONFIG_ENCA
char enca_lang[3], enca_fallback[100];
if (sscanf(sub_cp, "enca:%2s:%99s", enca_lang, enca_fallback) == 2
|| sscanf(sub_cp, "ENCA:%2s:%99s", enca_lang, enca_fallback) == 2) {
if (st && st->flags & MP_STREAM_SEEK ) {
cp_tmp = guess_cp(st, enca_lang, enca_fallback);
} else {
cp_tmp = enca_fallback;
if (st)
mp_msg(MSGT_SUBREADER,MSGL_WARN,"SUB: enca failed, stream must be seekable.\n");
}
}
#endif
if ((icdsc = iconv_open (tocp, cp_tmp)) != (iconv_t)(-1)){
mp_msg(MSGT_SUBREADER,MSGL_V,"SUB: opened iconv descriptor.\n");
sub_utf8 = 2;
} else
mp_msg(MSGT_SUBREADER,MSGL_ERR,"SUB: error opening iconv descriptor.\n");
}
}
void subcp_close (void)
{
if (icdsc != (iconv_t)(-1)){
(void) iconv_close (icdsc);
icdsc = (iconv_t)(-1);
mp_msg(MSGT_SUBREADER,MSGL_V,"SUB: closed iconv descriptor.\n");
}
}
subtitle* subcp_recode (subtitle *sub)
{
int l=sub->lines;
size_t ileft, oleft;
char *op, *ip, *ot;
if(icdsc == (iconv_t)(-1)) return sub;
while (l){
ip = sub->text[--l];
ileft = strlen(ip);
oleft = 4 * ileft;
if (!(ot = malloc(oleft + 1))){
mp_msg(MSGT_SUBREADER,MSGL_WARN,"SUB: error allocating mem.\n");
continue;
}
op = ot;
if (iconv(icdsc, &ip, &ileft,
&op, &oleft) == (size_t)(-1)) {
mp_msg(MSGT_SUBREADER,MSGL_WARN,"SUB: error recoding line.\n");
free(ot);
continue;
}
// In some stateful encodings, we must clear the state to handle the last character
if (iconv(icdsc, NULL, NULL,
&op, &oleft) == (size_t)(-1)) {
mp_msg(MSGT_SUBREADER,MSGL_WARN,"SUB: error recoding line, can't clear encoding state.\n");
}
*op='\0' ;
free (sub->text[l]);
sub->text[l] = ot;
}
return sub;
}
#endif
#ifdef CONFIG_FRIBIDI
/**
* Do conversion necessary for right-to-left language support via fribidi.
* @param sub subtitle to convert
* @param sub_utf8 whether the subtitle is encoded in UTF-8
* @param from first new subtitle, all lines before this are assumed to be already converted
*/
static subtitle* sub_fribidi (subtitle *sub, int sub_utf8, int from)
{
FriBidiChar logical[LINE_LEN+1], visual[LINE_LEN+1]; // Hopefully these two won't smash the stack
char *ip = NULL, *op = NULL;
size_t len,orig_len;
int l=sub->lines;
int char_set_num;
fribidi_boolean log2vis;
if (!flip_hebrew)
return sub;
fribidi_set_mirroring(1);
fribidi_set_reorder_nsm(0);
if( sub_utf8 == 0 ) {
char_set_num = fribidi_parse_charset (fribidi_charset?fribidi_charset:"ISO8859-8");
}else {
char_set_num = fribidi_parse_charset ("UTF-8");
}
while (l > from) {
ip = sub->text[--l];
orig_len = len = strlen( ip ); // We assume that we don't use full unicode, only UTF-8 or ISO8859-x
if(len > LINE_LEN) {
mp_msg(MSGT_SUBREADER,MSGL_WARN,"SUB: sub->text is longer than LINE_LEN.\n");
l++;
break;
}
len = fribidi_charset_to_unicode (char_set_num, ip, len, logical);
#if FRIBIDI_INTERFACE_VERSION < 3
FriBidiCharType base = fribidi_flip_commas?FRIBIDI_TYPE_ON:FRIBIDI_TYPE_L;
#else
FriBidiParType base = fribidi_flip_commas?FRIBIDI_TYPE_ON:FRIBIDI_TYPE_L;
#endif
log2vis = fribidi_log2vis (logical, len, &base,
/* output */
visual, NULL, NULL, NULL);
if(log2vis) {
len = fribidi_remove_bidi_marks (visual, len, NULL, NULL,
NULL);
if((op = malloc((FFMAX(2*orig_len,2*len) + 1))) == NULL) {
mp_msg(MSGT_SUBREADER,MSGL_WARN,"SUB: error allocating mem.\n");
l++;
break;
}
fribidi_unicode_to_charset ( char_set_num, visual, len,op);
free (ip);
sub->text[l] = op;
}
}
if (!from && l){
for (l = sub->lines; l;)
free (sub->text[--l]);
return ERR;
}
return sub;
}
#endif
static void adjust_subs_time(subtitle* sub, float subtime, float fps, int block,
int sub_num, int sub_uses_time) {
int n,m;
subtitle* nextsub;
int i = sub_num;
unsigned long subfms = (sub_uses_time ? 100 : fps) * subtime;
unsigned long overlap = (sub_uses_time ? 100 : fps) / 5; // 0.2s
n=m=0;
if (i) for (;;){
if (sub->end <= sub->start){
sub->end = sub->start + subfms;
m++;
n++;
}
if (!--i) break;
nextsub = sub + 1;
if(block){
if ((sub->end > nextsub->start) && (sub->end <= nextsub->start + overlap)) {
// these subtitles overlap for less than 0.2 seconds
// and would result in very short overlapping subtitle
// so let's fix the problem here, before overlapping code
// get its hands on them
unsigned delta = sub->end - nextsub->start, half = delta / 2;
sub->end -= half + 1;
nextsub->start += delta - half;
}
if (sub->end >= nextsub->start){
sub->end = nextsub->start - 1;
if (sub->end - sub->start > subfms)
sub->end = sub->start + subfms;
if (!m)
n++;
}
}
/* Theory:
* Movies are often converted from FILM (24 fps)
* to PAL (25) by simply speeding it up, so we
* to multiply the original timestmaps by
* (Movie's FPS / Subtitle's (guessed) FPS)
* so eg. for 23.98 fps movie and PAL time based
* subtitles we say -subfps 25 and we're fine!
*/
/* timed sub fps correction ::atmos */
/* the frame-based case is handled in mpcommon.c
* where find_sub is called */
if(sub_uses_time && sub_fps) {
sub->start *= sub_fps/fps;
sub->end *= sub_fps/fps;
}
sub = nextsub;
m = 0;
}
if (n) mp_msg(MSGT_SUBREADER,MSGL_V,"SUB: Adjusted %d subtitle(s).\n", n);
}
struct subreader {
subtitle * (*read)(stream_t *st, subtitle *dest,
struct readline_args *args);
void (*post)(subtitle *dest);
const char *name;
};
#ifdef CONFIG_ENCA
const char* guess_buffer_cp(unsigned char* buffer, int buflen, const char *preferred_language, const char *fallback)
{
const char **languages;
size_t langcnt;
EncaAnalyser analyser;
EncaEncoding encoding;
const char *detected_sub_cp = NULL;
int i;
languages = enca_get_languages(&langcnt);
mp_msg(MSGT_SUBREADER, MSGL_V, "ENCA supported languages: ");
for (i = 0; i < langcnt; i++) {
mp_msg(MSGT_SUBREADER, MSGL_V, "%s ", languages[i]);
}
mp_msg(MSGT_SUBREADER, MSGL_V, "\n");
for (i = 0; i < langcnt; i++) {
if (strcasecmp(languages[i], preferred_language) != 0) continue;
analyser = enca_analyser_alloc(languages[i]);
encoding = enca_analyse_const(analyser, buffer, buflen);
enca_analyser_free(analyser);
if (encoding.charset != ENCA_CS_UNKNOWN) {
detected_sub_cp = enca_charset_name(encoding.charset, ENCA_NAME_STYLE_ICONV);
break;
}
}
free(languages);
if (!detected_sub_cp) {
detected_sub_cp = fallback;
mp_msg(MSGT_SUBREADER, MSGL_INFO, "ENCA detection failed: fallback to %s\n", fallback);
}else{
mp_msg(MSGT_SUBREADER, MSGL_INFO, "ENCA detected charset: %s\n", detected_sub_cp);
}
return detected_sub_cp;
}
#define MAX_GUESS_BUFFER_SIZE (256*1024)
const char* guess_cp(stream_t *st, const char *preferred_language, const char *fallback)
{
size_t buflen;
unsigned char *buffer;
const char *detected_sub_cp = NULL;
buffer = malloc(MAX_GUESS_BUFFER_SIZE);
buflen = stream_read(st,buffer, MAX_GUESS_BUFFER_SIZE);
detected_sub_cp = guess_buffer_cp(buffer, buflen, preferred_language, fallback);
free(buffer);
stream_reset(st);
stream_seek(st,0);
return detected_sub_cp;
}
#undef MAX_GUESS_BUFFER_SIZE
#endif
sub_data* sub_read_file(char *filename, float fps, struct MPOpts *opts)
{
int utf16;
stream_t* fd;
int n_max, n_first, i, j, sub_first, sub_orig;
subtitle *first, *second, *sub, *return_sub, *alloced_sub = NULL;
sub_data *subt_data;
int uses_time = 0, sub_num = 0, sub_errs = 0;
static const struct subreader sr[]=
{
{ sub_read_line_microdvd, NULL, "microdvd" },
{ sub_read_line_subrip, NULL, "subrip" },
{ sub_read_line_subviewer, NULL, "subviewer" },
{ sub_read_line_sami, NULL, "sami" },
{ sub_read_line_vplayer, NULL, "vplayer" },
{ sub_read_line_rt, NULL, "rt" },
{ sub_read_line_ssa, sub_pp_ssa, "ssa" },
{ sub_read_line_pjs, NULL, "pjs" },
{ sub_read_line_mpsub, NULL, "mpsub" },
{ sub_read_line_aqt, NULL, "aqt" },
{ sub_read_line_subviewer2, NULL, "subviewer 2.0" },
{ sub_read_line_subrip09, NULL, "subrip 0.9" },
{ sub_read_line_jacosub, NULL, "jacosub" },
{ sub_read_line_mpl2, NULL, "mpl2" }
};
const struct subreader *srp;
if(filename==NULL) return NULL; //qnx segfault
fd=open_stream (filename, NULL, NULL); if (!fd) return NULL;
sub_format = SUB_INVALID;
for (utf16 = 0; sub_format == SUB_INVALID && utf16 < 3; utf16++) {
sub_format=sub_autodetect (fd, &uses_time, utf16);
stream_reset(fd);
stream_seek(fd,0);
}
utf16--;
mpsub_multiplier = (uses_time ? 100.0 : 1.0);
if (sub_format==SUB_INVALID) {
mp_msg(MSGT_SUBREADER,MSGL_WARN,"SUB: Could not determine file format\n");
free_stream(fd);
return NULL;
}
srp=sr+sub_format;
mp_msg(MSGT_SUBREADER, MSGL_V, "SUB: Detected subtitle file format: %s\n", srp->name);
#ifdef CONFIG_ICONV
sub_utf8_prev=sub_utf8;
{
int l,k;
k = -1;
if ((l=strlen(filename))>4){
char *exts[] = {".utf", ".utf8", ".utf-8" };
for (k=3;--k>=0;)
if (l >= strlen(exts[k]) && !strcasecmp(filename+(l - strlen(exts[k])), exts[k])){
sub_utf8 = 1;
break;
}
}
if (k<0) subcp_open(fd);
}
#endif
sub_num=0;n_max=32;
first=malloc(n_max*sizeof(subtitle));
if(!first){
#ifdef CONFIG_ICONV
subcp_close();
sub_utf8=sub_utf8_prev;
#endif
free_stream(fd);
return NULL;
}
#ifdef CONFIG_SORTSUB
alloced_sub =
sub = malloc(sizeof(subtitle));
//This is to deal with those formats (AQT & Subrip) which define the end of a subtitle
//as the beginning of the following
previous_sub_end = 0;
#endif
while(1){
if(sub_num>=n_max){
n_max+=16;
first=realloc(first,n_max*sizeof(subtitle));
}
#ifndef CONFIG_SORTSUB
sub = &first[sub_num];
#endif
memset(sub, '\0', sizeof(subtitle));
sub=srp->read(fd, sub, &(struct readline_args){utf16, opts});
if(!sub) break; // EOF
#ifdef CONFIG_ICONV
if ((sub!=ERR) && sub_utf8 == 2) sub=subcp_recode(sub);
#endif
#ifdef CONFIG_FRIBIDI
/* Libass has its own BiDi handling now, and running this before
* giving the subtitle to libass would only break things. */
if (sub != ERR && !opts->ass_enabled)
sub = sub_fribidi(sub, sub_utf8, 0);
#endif
if ( sub == ERR )
{
#ifdef CONFIG_ICONV
subcp_close();
#endif
free(first);
free(alloced_sub);
free_stream(fd);
return NULL;
}
// Apply any post processing that needs recoding first
if ((sub!=ERR) && !sub_no_text_pp && srp->post) srp->post(sub);
#ifdef CONFIG_SORTSUB
if(!sub_num || (first[sub_num - 1].start <= sub->start)){
first[sub_num].start = sub->start;
first[sub_num].end = sub->end;
first[sub_num].lines = sub->lines;
first[sub_num].alignment = sub->alignment;
for(i = 0; i < sub->lines; ++i){
first[sub_num].text[i] = sub->text[i];
}
if (previous_sub_end){
first[sub_num - 1].end = previous_sub_end;
previous_sub_end = 0;
}
} else {
for(j = sub_num - 1; j >= 0; --j){
first[j + 1].start = first[j].start;
first[j + 1].end = first[j].end;
first[j + 1].lines = first[j].lines;
first[j + 1].alignment = first[j].alignment;
for(i = 0; i < first[j].lines; ++i){
first[j + 1].text[i] = first[j].text[i];
}
if(!j || (first[j - 1].start <= sub->start)){
first[j].start = sub->start;
first[j].end = sub->end;
first[j].lines = sub->lines;
first[j].alignment = sub->alignment;
for(i = 0; i < SUB_MAX_TEXT; ++i){
first[j].text[i] = sub->text[i];
}
if (previous_sub_end){
first[j].end = first[j - 1].end;
first[j - 1].end = previous_sub_end;
previous_sub_end = 0;
}
break;
}
}
}
#endif
if(sub==ERR) ++sub_errs; else ++sub_num; // Error vs. Valid
}
free_stream(fd);
#ifdef CONFIG_ICONV
subcp_close();
#endif
free(alloced_sub);
// printf ("SUB: Subtitle format %s time.\n", uses_time?"uses":"doesn't use");
mp_msg(MSGT_SUBREADER, MSGL_V,"SUB: Read %i subtitles, %i bad line(s).\n",
sub_num, sub_errs);
if(sub_num<=0){
free(first);
return NULL;
}
// we do overlap if the user forced it (suboverlap_enable == 2) or
// the user didn't forced no-overlapsub and the format is Jacosub or Ssa.
// this is because usually overlapping subtitles are found in these formats,
// while in others they are probably result of bad timing
if ((suboverlap_enabled == 2) ||
((suboverlap_enabled) && ((sub_format == SUB_JACOSUB) || (sub_format == SUB_SSA)))) {
adjust_subs_time(first, 6.0, fps, 0, sub_num, uses_time);/*~6 secs AST*/
// here we manage overlapping subtitles
sub_orig = sub_num;
n_first = sub_num;
sub_num = 0;
second = NULL;
// for each subtitle in first[] we deal with its 'block' of
// bonded subtitles
for (sub_first = 0; sub_first < n_first; ++sub_first) {
unsigned long global_start = first[sub_first].start,
global_end = first[sub_first].end, local_start, local_end;
int lines_to_add = first[sub_first].lines, sub_to_add = 0,
**placeholder = NULL, higher_line = 0, counter, start_block_sub = sub_num;
char real_block = 1;
// here we find the number of subtitles inside the 'block'
// and its span interval. this works well only with sorted
// subtitles
while ((sub_first + sub_to_add + 1 < n_first) && (first[sub_first + sub_to_add + 1].start < global_end)) {
++sub_to_add;
lines_to_add += first[sub_first + sub_to_add].lines;
if (first[sub_first + sub_to_add].start < global_start) {
global_start = first[sub_first + sub_to_add].start;
}
if (first[sub_first + sub_to_add].end > global_end) {
global_end = first[sub_first + sub_to_add].end;
}
}
/* Avoid n^2 memory use for the "placeholder" data structure
* below with subtitles that have a huge number of
* consecutive overlapping lines. */
lines_to_add = FFMIN(lines_to_add, SUB_MAX_TEXT);
// we need a structure to keep trace of the screen lines
// used by the subs, a 'placeholder'
counter = 2 * sub_to_add + 1; // the maximum number of subs derived
// from a block of sub_to_add+1 subs
placeholder = malloc(sizeof(int *) * counter);
for (i = 0; i < counter; ++i) {
placeholder[i] = malloc(sizeof(int) * lines_to_add);
for (j = 0; j < lines_to_add; ++j) {
placeholder[i][j] = -1;
}
}
counter = 0;
local_end = global_start - 1;
do {
int ls;
// here we find the beginning and the end of a new
// subtitle in the block
local_start = local_end + 1;
local_end = global_end;
for (j = 0; j <= sub_to_add; ++j) {
if ((first[sub_first + j].start - 1 > local_start) && (first[sub_first + j].start - 1 < local_end)) {
local_end = first[sub_first + j].start - 1;
} else if ((first[sub_first + j].end > local_start) && (first[sub_first + j].end < local_end)) {
local_end = first[sub_first + j].end;
}
}
// here we allocate the screen lines to subs we must
// display in current local_start-local_end interval.
// if the subs were yet presents in the previous interval
// they keep the same lines, otherside they get unused lines
for (j = 0; j <= sub_to_add; ++j) {
if ((first[sub_first + j].start <= local_end) && (first[sub_first + j].end > local_start)) {
unsigned long sub_lines = first[sub_first + j].lines, fragment_length = lines_to_add + 1,
tmp = 0;
char boolean = 0;
int fragment_position = -1;
// if this is not the first new sub of the block
// we find if this sub was present in the previous
// new sub
if (counter)
for (i = 0; i < lines_to_add; ++i) {
if (placeholder[counter - 1][i] == sub_first + j) {
placeholder[counter][i] = sub_first + j;
boolean = 1;
}
}
if (boolean)
continue;
// we are looking for the shortest among all groups of
// sequential blank lines whose length is greater than or
// equal to sub_lines. we store in fragment_position the
// position of the shortest group, in fragment_length its
// length, and in tmp the length of the group currently
// examinated
for (i = 0; i < lines_to_add; ++i) {
if (placeholder[counter][i] == -1) {
// placeholder[counter][i] is part of the current group
// of blank lines
++tmp;
} else {
if (tmp == sub_lines) {
// current group's size fits exactly the one we
// need, so we stop looking
fragment_position = i - tmp;
tmp = 0;
break;
}
if ((tmp) && (tmp > sub_lines) && (tmp < fragment_length)) {
// current group is the best we found till here,
// but is still bigger than the one we are looking
// for, so we keep on looking
fragment_length = tmp;
fragment_position = i - tmp;
tmp = 0;
} else {
// current group doesn't fit at all, so we forget it
tmp = 0;
}
}
}
if (tmp) {
// last screen line is blank, a group ends with it
if ((tmp >= sub_lines) && (tmp < fragment_length)) {
fragment_position = i - tmp;
}
}
if (fragment_position == -1) {
// it was not possible to find free screen line(s) for a subtitle,
// usually this means a bug in the code; however we do not overlap
mp_msg(MSGT_SUBREADER, MSGL_WARN, "SUB: we could not find a suitable position for an overlapping subtitle\n");
higher_line = SUB_MAX_TEXT + 1;
break;
} else {
for (tmp = 0; tmp < sub_lines; ++tmp) {
placeholder[counter][fragment_position + tmp] = sub_first + j;
}
}
}
}
for (j = higher_line + 1; j < lines_to_add; ++j) {
if (placeholder[counter][j] != -1)
higher_line = j;
else
break;
}
if (higher_line >= SUB_MAX_TEXT) {
// the 'block' has too much lines, so we don't overlap the
// subtitles
second = realloc(second, (sub_num + sub_to_add + 1) * sizeof(subtitle));
for (j = 0; j <= sub_to_add; ++j) {
int ls;
memset(&second[sub_num + j], '\0', sizeof(subtitle));
second[sub_num + j].start = first[sub_first + j].start;
second[sub_num + j].end = first[sub_first + j].end;
second[sub_num + j].lines = first[sub_first + j].lines;
second[sub_num + j].alignment = first[sub_first + j].alignment;
for (ls = 0; ls < second[sub_num + j].lines; ls++) {
second[sub_num + j].text[ls] = strdup(first[sub_first + j].text[ls]);
}
}
sub_num += sub_to_add + 1;
sub_first += sub_to_add;
real_block = 0;
break;
}
// we read the placeholder structure and create the new
// subs.
second = realloc(second, (sub_num + 1) * sizeof(subtitle));
memset(&second[sub_num], '\0', sizeof(subtitle));
second[sub_num].start = local_start;
second[sub_num].end = local_end;
second[sub_num].alignment = first[sub_first].alignment;
n_max = (lines_to_add < SUB_MAX_TEXT) ? lines_to_add : SUB_MAX_TEXT;
for (i = 0, j = 0; j < n_max; ++j) {
if (placeholder[counter][j] != -1) {
int lines = first[placeholder[counter][j]].lines;
for (ls = 0; ls < lines; ++ls) {
second[sub_num].text[i++] = strdup(first[placeholder[counter][j]].text[ls]);
}
j += lines - 1;
} else {
second[sub_num].text[i++] = strdup(" ");
}
}
++sub_num;
++counter;
} while (local_end < global_end);
if (real_block)
for (i = 0; i < counter; ++i)
second[start_block_sub + i].lines = higher_line + 1;
counter = 2 * sub_to_add + 1;
for (i = 0; i < counter; ++i) {
free(placeholder[i]);
}
free(placeholder);
sub_first += sub_to_add;
}
for (j = sub_orig - 1; j >= 0; --j) {
for (i = first[j].lines - 1; i >= 0; --i) {
free(first[j].text[i]);
}
}
free(first);
return_sub = second;
} else { //if(suboverlap_enabled)
adjust_subs_time(first, 6.0, fps, 1, sub_num, uses_time);/*~6 secs AST*/
return_sub = first;
}
if (return_sub == NULL) return NULL;
subt_data = malloc(sizeof(sub_data));
subt_data->filename = strdup(filename);
subt_data->sub_uses_time = uses_time;
subt_data->sub_num = sub_num;
subt_data->sub_errs = sub_errs;
subt_data->subtitles = return_sub;
return subt_data;
}
void list_sub_file(sub_data* subd){
int i,j;
subtitle *subs = subd->subtitles;
for(j=0; j < subd->sub_num; j++){
subtitle* egysub=&subs[j];
mp_msg(MSGT_SUBREADER,MSGL_INFO,"%i line%c (%li-%li)\n",
egysub->lines,
(1==egysub->lines)?' ':'s',
egysub->start,
egysub->end);
for (i=0; i<egysub->lines; i++) {
mp_msg(MSGT_SUBREADER,MSGL_INFO,"\t\t%d: %s%s", i,egysub->text[i], i==egysub->lines-1?"":" \n ");
}
mp_msg(MSGT_SUBREADER,MSGL_INFO,"\n");
}
mp_msg(MSGT_SUBREADER,MSGL_INFO,"Subtitle format %s time.\n",
subd->sub_uses_time ? "uses":"doesn't use");
mp_msg(MSGT_SUBREADER,MSGL_INFO,"Read %i subtitles, %i errors.\n", subd->sub_num, subd->sub_errs);
}
void dump_srt(sub_data* subd, float fps){
int i,j;
int h,m,s,ms;
FILE * fd;
subtitle * onesub;
unsigned long temp;
subtitle *subs = subd->subtitles;
if (!subd->sub_uses_time && sub_fps == 0)
sub_fps = fps;
fd=fopen("dumpsub.srt","w");
if(!fd)
{
perror("dump_srt: fopen");
return;
}
for(i=0; i < subd->sub_num; i++)
{
onesub=subs+i; //=&subs[i];
fprintf(fd,"%d\n",i+1);//line number
temp=onesub->start;
if (!subd->sub_uses_time)
temp = temp * 100 / sub_fps;
temp -= sub_delay * 100;
h=temp/360000;temp%=360000; //h =1*100*60*60
m=temp/6000; temp%=6000; //m =1*100*60
s=temp/100; temp%=100; //s =1*100
ms=temp*10; //ms=1*10
fprintf(fd,"%02d:%02d:%02d,%03d --> ",h,m,s,ms);
temp=onesub->end;
if (!subd->sub_uses_time)
temp = temp * 100 / sub_fps;
temp -= sub_delay * 100;
h=temp/360000;temp%=360000;
m=temp/6000; temp%=6000;
s=temp/100; temp%=100;
ms=temp*10;
fprintf(fd,"%02d:%02d:%02d,%03d\n",h,m,s,ms);
for(j=0;j<onesub->lines;j++)
fprintf(fd,"%s\n",onesub->text[j]);
fprintf(fd,"\n");
}
fclose(fd);
mp_msg(MSGT_SUBREADER,MSGL_INFO,"SUB: Subtitles dumped in \'dumpsub.srt\'.\n");
}
void dump_mpsub(sub_data* subd, float fps){
int i,j;
FILE *fd;
float a,b;
subtitle *subs = subd->subtitles;
mpsub_position = subd->sub_uses_time? (sub_delay*100) : (sub_delay*fps);
if (sub_fps==0) sub_fps=fps;
fd=fopen ("dump.mpsub", "w");
if (!fd) {
perror ("dump_mpsub: fopen");
return;
}
if (subd->sub_uses_time) fprintf (fd,"FORMAT=TIME\n\n");
else fprintf (fd, "FORMAT=%5.2f\n\n", fps);
for(j=0; j < subd->sub_num; j++){
subtitle* egysub=&subs[j];
if (subd->sub_uses_time) {
a=((egysub->start-mpsub_position)/100.0);
b=((egysub->end-egysub->start)/100.0);
if ( (float)((int)a) == a)
fprintf (fd, "%.0f",a);
else
fprintf (fd, "%.2f",a);
if ( (float)((int)b) == b)
fprintf (fd, " %.0f\n",b);
else
fprintf (fd, " %.2f\n",b);
} else {
fprintf (fd, "%ld %ld\n", (long)((egysub->start*(fps/sub_fps))-((mpsub_position*(fps/sub_fps)))),
(long)(((egysub->end)-(egysub->start))*(fps/sub_fps)));
}
mpsub_position = egysub->end;
for (i=0; i<egysub->lines; i++) {
fprintf (fd, "%s\n",egysub->text[i]);
}
fprintf (fd, "\n");
}
fclose (fd);
mp_msg(MSGT_SUBREADER,MSGL_INFO,"SUB: Subtitles dumped in \'dump.mpsub\'.\n");
}
void dump_microdvd(sub_data* subd, float fps) {
int i, delay;
FILE *fd;
subtitle *subs = subd->subtitles;
if (sub_fps == 0)
sub_fps = fps;
fd = fopen("dumpsub.sub", "w");
if (!fd) {
perror("dumpsub.sub: fopen");
return;
}
delay = sub_delay * sub_fps;
for (i = 0; i < subd->sub_num; ++i) {
int j, start, end;
start = subs[i].start;
end = subs[i].end;
if (subd->sub_uses_time) {
start = start * sub_fps / 100 ;
end = end * sub_fps / 100;
}
else {
start = start * sub_fps / fps;
end = end * sub_fps / fps;
}
start -= delay;
end -= delay;
fprintf(fd, "{%d}{%d}", start, end);
for (j = 0; j < subs[i].lines; ++j)
fprintf(fd, "%s%s", j ? "|" : "", subs[i].text[j]);
fprintf(fd, "\n");
}
fclose(fd);
mp_msg(MSGT_SUBREADER,MSGL_INFO,"SUB: Subtitles dumped in \'dumpsub.sub\'.\n");
}
void dump_jacosub(sub_data* subd, float fps) {
int i,j;
int h,m,s,cs;
FILE * fd;
subtitle * onesub;
unsigned long temp;
subtitle *subs = subd->subtitles;
if (!subd->sub_uses_time && sub_fps == 0)
sub_fps = fps;
fd=fopen("dumpsub.jss","w");
if(!fd)
{
perror("dump_jacosub: fopen");
return;
}
fprintf(fd, "#TIMERES %d\n", (subd->sub_uses_time) ? 100 : (int)sub_fps);
for(i=0; i < subd->sub_num; i++)
{
onesub=subs+i; //=&subs[i];
temp=onesub->start;
if (!subd->sub_uses_time)
temp = temp * 100 / sub_fps;
temp -= sub_delay * 100;
h=temp/360000;temp%=360000; //h =1*100*60*60
m=temp/6000; temp%=6000; //m =1*100*60
s=temp/100; temp%=100; //s =1*100
cs=temp; //cs=1*10
fprintf(fd,"%02d:%02d:%02d.%02d ",h,m,s,cs);
temp=onesub->end;
if (!subd->sub_uses_time)
temp = temp * 100 / sub_fps;
temp -= sub_delay * 100;
h=temp/360000;temp%=360000;
m=temp/6000; temp%=6000;
s=temp/100; temp%=100;
cs=temp;
fprintf(fd,"%02d:%02d:%02d.%02d {~} ",h,m,s,cs);
for(j=0;j<onesub->lines;j++)
fprintf(fd,"%s%s",j ? "\\n" : "", onesub->text[j]);
fprintf(fd,"\n");
}
fclose(fd);
mp_msg(MSGT_SUBREADER,MSGL_INFO,"SUB: Subtitles dumped in \'dumpsub.js\'.\n");
}
void dump_sami(sub_data* subd, float fps) {
int i,j;
FILE * fd;
subtitle * onesub;
unsigned long temp;
subtitle *subs = subd->subtitles;
if (!subd->sub_uses_time && sub_fps == 0)
sub_fps = fps;
fd=fopen("dumpsub.smi","w");
if(!fd)
{
perror("dump_jacosub: fopen");
return;
}
fprintf(fd, "<SAMI>\n"
"<HEAD>\n"
" <STYLE TYPE=\"Text/css\">\n"
" <!--\n"
" P {margin-left: 29pt; margin-right: 29pt; font-size: 24pt; text-align: center; font-family: Tahoma; font-weight: bold; color: #FCDD03; background-color: #000000;}\n"
" .SUBTTL {Name: 'Subtitles'; Lang: en-US; SAMIType: CC;}\n"
" -->\n"
" </STYLE>\n"
"</HEAD>\n"
"<BODY>\n");
for(i=0; i < subd->sub_num; i++)
{
onesub=subs+i; //=&subs[i];
temp=onesub->start;
if (!subd->sub_uses_time)
temp = temp * 100 / sub_fps;
temp -= sub_delay * 100;
fprintf(fd,"\t<SYNC Start=%lu>\n"
"\t <P>", temp * 10);
for(j=0;j<onesub->lines;j++)
fprintf(fd,"%s%s",j ? "<br>" : "", onesub->text[j]);
fprintf(fd,"\n");
temp=onesub->end;
if (!subd->sub_uses_time)
temp = temp * 100 / sub_fps;
temp -= sub_delay * 100;
fprintf(fd,"\t<SYNC Start=%lu>\n"
"\t <P>&nbsp;\n", temp * 10);
}
fprintf(fd, "</BODY>\n"
"</SAMI>\n");
fclose(fd);
mp_msg(MSGT_SUBREADER,MSGL_INFO,"SUB: Subtitles dumped in \'dumpsub.smi\'.\n");
}
void sub_free( sub_data * subd )
{
int i, j;
if ( !subd ) return;
for (i = 0; i < subd->sub_num; i++)
for (j = 0; j < subd->subtitles[i].lines; j++)
free( subd->subtitles[i].text[j] );
free( subd->subtitles );
free( subd->filename );
free( subd );
}
#define MAX_SUBLINE 512
/**
* \brief parse text and append it to subtitle in sub
* \param sub subtitle struct to add text to
* \param txt text to parse
* \param len length of text in txt
* \param endpts pts at which this subtitle text should be removed again
*
* <> and {} are interpreted as comment delimiters, "\n", "\N", '\n', '\r'
* and '\0' are interpreted as newlines, duplicate, leading and trailing
* newlines are ignored.
*/
void sub_add_text(subtitle *sub, const char *txt, int len, double endpts) {
int comment = 0;
int double_newline = 1; // ignore newlines at the beginning
int i, pos;
char *buf;
#ifdef CONFIG_FRIBIDI
int orig_lines = sub->lines;
#endif
if (sub->lines >= SUB_MAX_TEXT) return;
pos = 0;
buf = malloc(MAX_SUBLINE + 1);
sub->text[sub->lines] = buf;
sub->endpts[sub->lines] = endpts;
for (i = 0; i < len && pos < MAX_SUBLINE; i++) {
char c = txt[i];
if (c == '<') comment |= 1;
if (c == '{') comment |= 2;
if (comment) {
if (c == '}') comment &= ~2;
if (c == '>') comment &= ~1;
continue;
}
if (pos == MAX_SUBLINE - 1) {
i--;
c = 0;
}
if (c == '\\' && i + 1 < len) {
c = txt[++i];
if (c == 'n' || c == 'N') c = 0;
}
if (c == '\n' || c == '\r') c = 0;
if (c) {
double_newline = 0;
buf[pos++] = c;
} else if (!double_newline) {
if (sub->lines >= SUB_MAX_TEXT - 1) {
mp_msg(MSGT_VO, MSGL_WARN, "Too many subtitle lines\n");
break;
}
double_newline = 1;
buf[pos] = 0;
sub->lines++;
pos = 0;
buf = malloc(MAX_SUBLINE + 1);
sub->text[sub->lines] = buf;
sub->endpts[sub->lines] = endpts;
}
}
buf[pos] = 0;
if (sub->lines < SUB_MAX_TEXT &&
strlen(sub->text[sub->lines]))
sub->lines++;
#ifdef CONFIG_FRIBIDI
sub = sub_fribidi(sub, sub_utf8, orig_lines);
#endif
}
/**
* \brief remove outdated subtitle lines.
* \param sub subtitle struct to modify
* \param pts current pts. All lines with endpts <= this will be removed.
* Use MP_NOPTS_VALUE to remove all lines
* \return 1 if sub was modified, 0 otherwise.
*/
int sub_clear_text(subtitle *sub, double pts) {
int i = 0;
int changed = 0;
while (i < sub->lines) {
double endpts = sub->endpts[i];
if (pts == MP_NOPTS_VALUE || (endpts != MP_NOPTS_VALUE && pts >= endpts)) {
int j;
free(sub->text[i]);
for (j = i + 1; j < sub->lines; j++) {
sub->text[j - 1] = sub->text[j];
sub->endpts[j - 1] = sub->endpts[j];
}
sub->lines--;
changed = 1;
} else
i++;
}
return changed;
}
View Git Blame Copy Permalink