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a725639c93
mpv/subreader.c
reimar 57b8d5c7f6 fixes a crash and unchecked string-handling in ENCA code. 
Also does a bit of cleanup.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12910 b3059339-0415-0410-9bf9-f77b7e298cf2
2004-07-28 12:40:35 +00:00

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/*
* Subtitle reader with format autodetection
*
* Written by laaz
* Some code cleanup & realloc() by A'rpi/ESP-team
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <sys/types.h>
#include <dirent.h>
#include "config.h"
#include "mp_msg.h"
#include "subreader.h"
#ifdef HAVE_ENCA
#include <enca.h>
#endif
#define ERR ((void *) -1)
#ifdef USE_ICONV
#include <iconv.h>
char *sub_cp=NULL;
#endif
#ifdef USE_FRIBIDI
#include <fribidi/fribidi.h>
char *fribidi_charset = NULL;
int flip_hebrew = 1;
#endif
extern char* dvdsub_lang;
/* 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 USE_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 USE_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;
}
subtitle *sub_read_line_sami(FILE *fd, subtitle *current) {
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;
state = 0;
/* read the first line */
if (!s)
if (!(s = fgets(line, LINE_LEN, fd))) 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 (optionnal) "<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 (*s == '\0') break;
else if (!strncasecmp (s, "<br>", 4)) {
*p = '\0'; p = text; trail_space (text);
if (text[0] != '\0')
current->text[current->lines++] = strdup (text);
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 */
if (*s == '}') state = 3;
++s;
continue;
}
/* read next line */
if (state != 99 && !(s = fgets (line, LINE_LEN, fd))) {
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;
*p = '\0'; trail_space (text);
if (text[0] != '\0')
current->text[current->lines++] = strdup (text);
}
return current;
}
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= (char *)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
}
subtitle *sub_read_line_microdvd(FILE *fd,subtitle *current) {
char line[LINE_LEN+1];
char line2[LINE_LEN+1];
char *p, *next;
int i;
do {
if (!fgets (line, LINE_LEN, fd)) return NULL;
} while ((sscanf (line,
"{%ld}{}%[^\r\n]",
&(current->start), line2) < 2) &&
(sscanf (line,
"{%ld}{%ld}%[^\r\n]",
&(current->start), &(current->end), line2) < 3));
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;
}
subtitle *sub_read_line_mpl2(FILE *fd,subtitle *current) {
char line[LINE_LEN+1];
char line2[LINE_LEN+1];
char *p, *next;
int i;
do {
if (!fgets (line, LINE_LEN, fd)) 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;
}
subtitle *sub_read_line_subrip(FILE *fd, subtitle *current) {
char line[LINE_LEN+1];
int a1,a2,a3,a4,b1,b2,b3,b4;
char *p=NULL, *q=NULL;
int len;
while (1) {
if (!fgets (line, LINE_LEN, fd)) 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 (!fgets (line, LINE_LEN, fd)) 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]=(char *)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;
}
subtitle *sub_read_line_subviewer(FILE *fd,subtitle *current) {
char line[LINE_LEN+1];
int a1,a2,a3,a4,b1,b2,b3,b4;
char *p=NULL;
int i,len;
while (!current->text[0]) {
if (!fgets (line, LINE_LEN, fd)) 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;) {
if (!fgets (line, LINE_LEN, fd)) break;
len=0;
for (p=line; *p!='\n' && *p!='\r' && *p; p++,len++);
if (len) {
int j=0,skip=0;
char *curptr=current->text[i]=(char *)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;
}
subtitle *sub_read_line_subviewer2(FILE *fd,subtitle *current) {
char line[LINE_LEN+1];
int a1,a2,a3,a4;
char *p=NULL;
int i,len;
while (!current->text[0]) {
if (!fgets (line, LINE_LEN, fd)) 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 (!fgets (line, LINE_LEN, fd)) break;
if (line[0]=='}') break;
len=0;
for (p=line; *p!='\n' && *p!='\r' && *p; ++p,++len);
if (len) {
current->text[i]=(char *)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;
}
subtitle *sub_read_line_vplayer(FILE *fd,subtitle *current) {
char line[LINE_LEN+1];
int a1,a2,a3;
char *p=NULL, *next,separator;
int i,len,plen;
while (!current->text[0]) {
if (!fgets (line, LINE_LEN, fd)) 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;
}
subtitle *sub_read_line_rt(FILE *fd,subtitle *current) {
//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 (!fgets (line, LINE_LEN, fd)) 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;
}
subtitle *sub_read_line_ssa(FILE *fd,subtitle *current) {
/*
* 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 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 (!fgets (line, LINE_LEN, fd)) 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, ',');
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]=(char *)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;
}
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 ;-)
*/
subtitle *sub_read_line_pjs(FILE *fd,subtitle *current) {
char line[LINE_LEN+1];
char text[LINE_LEN+1], *s, *d;
if (!fgets (line, LINE_LEN, fd))
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;
}
subtitle *sub_read_line_mpsub(FILE *fd, subtitle *current) {
char line[LINE_LEN+1];
float a,b;
int num=0;
char *p, *q;
do
{
if (!fgets(line, LINE_LEN, fd)) 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 (!fgets (line, LINE_LEN, fd)) {
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 USE_SORTSUB
//we don't need this if we use previous_sub_end
subtitle *previous_aqt_sub = NULL;
#endif
subtitle *sub_read_line_aqt(FILE *fd,subtitle *current) {
char line[LINE_LEN+1];
char *next;
int i;
while (1) {
// try to locate next subtitle
if (!fgets (line, LINE_LEN, fd))
return NULL;
if (!(sscanf (line, "-->> %ld", &(current->start)) <1))
break;
}
#ifdef USE_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 (!fgets (line, LINE_LEN, fd))
return NULL;
sub_readtext((char *) &line,&current->text[0]);
current->lines = 1;
current->end = current->start; // will be corrected by next subtitle
if (!fgets (line, LINE_LEN, fd))
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 ((current->text[0]=="") && (current->text[1]=="")) {
#ifdef USE_SORTSUB
previous_sub_end = 0;
#else
// void subtitle -> end of previous marked and exit
previous_aqt_sub = NULL;
#endif
return NULL;
}
return current;
}
#ifndef USE_SORTSUB
subtitle *previous_subrip09_sub = NULL;
#endif
subtitle *sub_read_line_subrip09(FILE *fd,subtitle *current) {
char line[LINE_LEN+1];
int a1,a2,a3;
char * next=NULL;
int i,len;
while (1) {
// try to locate next subtitle
if (!fgets (line, LINE_LEN, fd))
return NULL;
if (!((len=sscanf (line, "[%d:%d:%d]",&a1,&a2,&a3)) < 3))
break;
}
current->start = a1*360000+a2*6000+a3*100;
#ifdef USE_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 (!fgets (line, LINE_LEN, fd))
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 ((current->text[0]=="") && (i==0)) {
#ifdef USE_SORTSUB
previous_sub_end = 0;
#else
// void subtitle -> end of previous marked and exit
previous_subrip09_sub = NULL;
#endif
return NULL;
}
return current;
}
subtitle *sub_read_line_jacosub(FILE * fd, subtitle * current)
{
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;
bzero(current, sizeof(subtitle));
bzero(line1, LINE_LEN);
bzero(line2, LINE_LEN);
bzero(directive, LINE_LEN);
while (!current->text[0]) {
if (!fgets(line1, LINE_LEN, fd)) {
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_HLEFT;
} else if (strstr(directive, "JR") != NULL) {
current->alignment = SUB_ALIGNMENT_HRIGHT;
} else {
current->alignment = SUB_ALIGNMENT_HCENTER;
}
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 (!fgets(directive, LINE_LEN, fd))
return NULL;
trail_space(directive);
strncat(line2, directive,
(LINE_LEN > 511) ? LINE_LEN : 511);
break;
}
default:
if (!comment) {
*q = *p;
++q;
}
} //-- switch
} //-- for
*q = '\0';
current->text[current->lines] = strdup(line1);
} //-- while
current->lines++;
return current;
}
int sub_autodetect (FILE *fd, int *uses_time) {
char line[LINE_LEN+1];
int i,j=0;
char p;
while (j < 100) {
j++;
if (!fgets (line, LINE_LEN, fd))
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;}
//TODO: just checking if first line of sub starts with "<" is WAY
// too weak test for RT
// Please someone who knows the format of RT... FIX IT!!!
// It may conflict with other sub formats in the future (actually it doesn't)
if ( *line == '<' )
{*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 (sscanf (line, "FORMAT=TIM%c", &p)==1 && p=='E')
{*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
}
#ifdef DUMPSUBS
int sub_utf8=0;
#else
extern int sub_utf8;
int sub_utf8_prev=0;
#endif
extern float sub_delay;
extern float sub_fps;
#ifdef USE_ICONV
static iconv_t icdsc = (iconv_t)(-1);
void subcp_open (FILE *enca_fd)
{
char *tocp = "UTF-8";
if (sub_cp){
char *cp_tmp = sub_cp;
#ifdef HAVE_ENCA
char enca_lang[3], enca_fallback[100];
int free_cp_tmp = 0;
if (sscanf(sub_cp, "enca:%2s:%99s", enca_lang, enca_fallback) == 2
|| sscanf(sub_cp, "ENCA:%2s:%99s", enca_lang, enca_fallback) == 2) {
if (enca_fd) {
cp_tmp = guess_cp(enca_fd, enca_lang, enca_fallback);
free_cp_tmp = 1;
} else {
cp_tmp = enca_fallback;
}
}
#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");
#ifdef HAVE_ENCA
if (free_cp_tmp && cp_tmp) free(cp_tmp);
#endif
}
}
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");
}
}
#define ICBUFFSIZE 512
static char icbuffer[ICBUFFSIZE];
subtitle* subcp_recode (subtitle *sub)
{
int l=sub->lines;
size_t ileft, oleft;
char *op, *ip, *ot;
while (l){
op = icbuffer;
ip = sub->text[--l];
ileft = strlen(ip);
oleft = ICBUFFSIZE - 1;
if (iconv(icdsc, &ip, &ileft,
&op, &oleft) == (size_t)(-1)) {
mp_msg(MSGT_SUBREADER,MSGL_WARN,"SUB: error recoding line (1).\n");
l++;
break;
}
if (!(ot = (char *)malloc(op - icbuffer + 1))){
mp_msg(MSGT_SUBREADER,MSGL_WARN,"SUB: error allocating mem.\n");
l++;
break;
}
*op='\0' ;
strcpy (ot, icbuffer);
free (sub->text[l]);
sub->text[l] = ot;
}
if (l){
for (l = sub->lines; l;)
free (sub->text[--l]);
return ERR;
}
return sub;
}
// for demux_ogg.c:
subtitle* subcp_recode1 (subtitle *sub)
{
int l=sub->lines;
size_t ileft, oleft;
if(icdsc == (iconv_t)(-1)) return sub;
while (l){
char *ip = icbuffer;
char *op = sub->text[--l];
strlcpy(ip, op, ICBUFFSIZE);
ileft = strlen(ip);
oleft = ICBUFFSIZE - 1;
if (iconv(icdsc, &ip, &ileft,
&op, &oleft) == (size_t)(-1)) {
mp_msg(MSGT_SUBREADER,MSGL_V,"SUB: error recoding line (2).\n");
return sub;
}
*op='\0' ;
}
return sub;
}
#endif
#ifdef USE_FRIBIDI
#ifndef max
#define max(a,b) (((a)>(b))?(a):(b))
#endif
subtitle* sub_fribidi (subtitle *sub, int sub_utf8)
{
FriBidiChar logical[LINE_LEN+1], visual[LINE_LEN+1]; // Hopefully these two won't smash the stack
char *ip = NULL, *op = NULL;
FriBidiCharType base;
size_t len,orig_len;
int l=sub->lines;
int char_set_num;
fribidi_boolean log2vis;
if(flip_hebrew) { // Please fix the indentation someday
fribidi_set_mirroring (FRIBIDI_TRUE);
fribidi_set_reorder_nsm (FRIBIDI_FALSE);
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) {
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);
base = FRIBIDI_TYPE_ON;
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 = (char*)malloc(sizeof(char)*(max(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 (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 */
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_INFO,"SUB: Adjusted %d subtitle(s).\n", n);
}
struct subreader {
subtitle * (*read)(FILE *fd,subtitle *dest);
void (*post)(subtitle *dest);
const char *name;
};
#ifdef HAVE_ENCA
#define MAX_GUESS_BUFFER_SIZE (256*1024)
void* guess_cp(FILE *fd, char *preferred_language, char *fallback)
{
const char **languages;
size_t langcnt, buflen;
EncaAnalyser analyser;
EncaEncoding encoding;
unsigned char *buffer;
char *detected_sub_cp = NULL;
int i;
buffer = (unsigned char*)malloc(MAX_GUESS_BUFFER_SIZE*sizeof(char));
buflen = fread(buffer, 1, MAX_GUESS_BUFFER_SIZE, fd);
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);
mp_msg(MSGT_SUBREADER, MSGL_INFO, "ENCA detected charset: %s\n", enca_charset_name(encoding.charset, ENCA_NAME_STYLE_ICONV));
detected_sub_cp = strdup(enca_charset_name(encoding.charset, ENCA_NAME_STYLE_ICONV));
enca_analyser_free(analyser);
}
free(languages);
free(buffer);
rewind(fd);
if (!detected_sub_cp) detected_sub_cp = strdup(fallback);
return detected_sub_cp;
}
#endif
sub_data* sub_read_file (char *filename, float fps) {
//filename is assumed to be malloc'ed, free() is used in sub_free()
FILE *fd;
int n_max, n_first, i, j, sub_first, sub_orig;
subtitle *first, *second, *sub, *return_sub;
sub_data *subt_data;
int uses_time = 0, sub_num = 0, sub_errs = 0;
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" }
};
struct subreader *srp;
if(filename==NULL) return NULL; //qnx segfault
fd=fopen (filename, "r"); if (!fd) return NULL;
sub_format=sub_autodetect (fd, &uses_time);
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");return NULL;}
srp=sr+sub_format;
mp_msg(MSGT_SUBREADER,MSGL_INFO,"SUB: Detected subtitle file format: %s\n", srp->name);
rewind (fd);
#ifdef USE_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 (!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=(subtitle *)malloc(n_max*sizeof(subtitle));
if(!first){
#ifdef USE_ICONV
subcp_close();
sub_utf8=sub_utf8_prev;
#endif
return NULL;
}
#ifdef USE_SORTSUB
sub = (subtitle *)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 USE_SORTSUB
sub = &first[sub_num];
#endif
memset(sub, '\0', sizeof(subtitle));
sub=srp->read(fd,sub);
if(!sub) break; // EOF
#ifdef USE_ICONV
if ((sub!=ERR) && (sub_utf8 & 2)) sub=subcp_recode(sub);
#endif
#ifdef USE_FRIBIDI
if (sub!=ERR) sub=sub_fribidi(sub,sub_utf8);
#endif
if ( sub == ERR )
{
#ifdef USE_ICONV
subcp_close();
#endif
if ( first ) free(first);
return NULL;
}
// Apply any post processing that needs recoding first
if ((sub!=ERR) && !sub_no_text_pp && srp->post) srp->post(sub);
#ifdef USE_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
}
fclose(fd);
#ifdef USE_ICONV
subcp_close();
#endif
// printf ("SUB: Subtitle format %s time.\n", uses_time?"uses":"doesn't use");
mp_msg(MSGT_SUBREADER,MSGL_INFO,"SUB: Read %i subtitles", sub_num);
if (sub_errs) mp_msg(MSGT_SUBREADER,MSGL_INFO,", %i bad line(s).\n", sub_errs);
else mp_msg(MSGT_SUBREADER,MSGL_INFO,".\n");
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;
}
}
// 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 = (int **) malloc(sizeof(int *) * counter);
for (i = 0; i < counter; ++i) {
placeholder[i] = (int *) 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 = (subtitle *) 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 = (subtitle *) 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 = SUB_ALIGNMENT_HCENTER;
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 = (sub_data *)malloc(sizeof(sub_data));
subt_data->filename = 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;
}
#if 0
char * strreplace( char * in,char * what,char * whereof )
{
int i;
char * tmp;
if ( ( in == NULL )||( what == NULL )||( whereof == NULL )||( ( tmp=strstr( in,what ) ) == NULL ) ) return NULL;
for( i=0;i<strlen( whereof );i++ ) tmp[i]=whereof[i];
if ( strlen( what ) > strlen( whereof ) ) tmp[i]=0;
return in;
}
#endif
static void strcpy_trim(char *d, char *s)
{
// skip leading whitespace
while (*s && !isalnum(*s)) {
s++;
}
for (;;) {
// copy word
while (*s && isalnum(*s)) {
*d = tolower(*s);
s++; d++;
}
if (*s == 0) break;
// trim excess whitespace
while (*s && !isalnum(*s)) {
s++;
}
if (*s == 0) break;
*d++ = ' ';
}
*d = 0;
}
static void strcpy_strip_ext(char *d, char *s)
{
char *tmp = strrchr(s,'.');
if (!tmp) {
strcpy(d, s);
return;
} else {
strncpy(d, s, tmp-s);
d[tmp-s] = 0;
}
while (*d) {
*d = tolower(*d);
d++;
}
}
static void strcpy_get_ext(char *d, char *s)
{
char *tmp = strrchr(s,'.');
if (!tmp) {
strcpy(d, "");
return;
} else {
strcpy(d, tmp+1);
}
}
static int whiteonly(char *s)
{
while (*s) {
if (isalnum(*s)) return 0;
s++;
}
return 1;
}
typedef struct _subfn
{
int priority;
char *fname;
} subfn;
static int compare_sub_priority(const void *a, const void *b)
{
if (((subfn*)a)->priority > ((subfn*)b)->priority) {
return -1;
} else if (((subfn*)a)->priority < ((subfn*)b)->priority) {
return 1;
} else {
return strcoll(((subfn*)a)->fname, ((subfn*)b)->fname);
}
}
char** sub_filenames(char* path, char *fname)
{
char *f_dir, *f_fname, *f_fname_noext, *f_fname_trim, *tmp, *tmp_sub_id;
char *tmp_fname_noext, *tmp_fname_trim, *tmp_fname_ext, *tmpresult;
int len, pos, found, i, j;
char * sub_exts[] = { "utf", "utf8", "utf-8", "sub", "srt", "smi", "rt", "txt", "ssa", "aqt", "jss", "js", "ass", NULL};
subfn *result;
char **result2;
int subcnt;
FILE *f;
DIR *d;
struct dirent *de;
len = (strlen(fname) > 256 ? strlen(fname) : 256)
+(strlen(path) > 256 ? strlen(path) : 256)+2;
f_dir = (char*)malloc(len);
f_fname = (char*)malloc(len);
f_fname_noext = (char*)malloc(len);
f_fname_trim = (char*)malloc(len);
tmp_fname_noext = (char*)malloc(len);
tmp_fname_trim = (char*)malloc(len);
tmp_fname_ext = (char*)malloc(len);
tmpresult = (char*)malloc(len);
result = (subfn*)malloc(sizeof(subfn)*MAX_SUBTITLE_FILES);
memset(result, 0, sizeof(subfn)*MAX_SUBTITLE_FILES);
subcnt = 0;
tmp = strrchr(fname,'/');
#ifdef WIN32
if(!tmp)tmp = strrchr(fname,'\\');
#endif
// extract filename & dirname from fname
if (tmp) {
strcpy(f_fname, tmp+1);
pos = tmp - fname;
strncpy(f_dir, fname, pos+1);
f_dir[pos+1] = 0;
} else {
strcpy(f_fname, fname);
strcpy(f_dir, "./");
}
strcpy_strip_ext(f_fname_noext, f_fname);
strcpy_trim(f_fname_trim, f_fname_noext);
tmp_sub_id = NULL;
if (dvdsub_lang && !whiteonly(dvdsub_lang)) {
tmp_sub_id = (char*)malloc(strlen(dvdsub_lang)+1);
strcpy_trim(tmp_sub_id, dvdsub_lang);
}
// 0 = nothing
// 1 = any subtitle file
// 2 = any sub file containing movie name
// 3 = sub file containing movie name and the lang extension
for (j = 0; j <= 1; j++) {
d = opendir(j == 0 ? f_dir : path);
if (d) {
while ((de = readdir(d))) {
// retrieve various parts of the filename
strcpy_strip_ext(tmp_fname_noext, de->d_name);
strcpy_get_ext(tmp_fname_ext, de->d_name);
strcpy_trim(tmp_fname_trim, tmp_fname_noext);
// does it end with a subtitle extension?
found = 0;
#ifdef USE_ICONV
#ifdef HAVE_ENCA
for (i = ((sub_cp && strncasecmp(sub_cp, "enca", 4) != 0) ? 3 : 0); sub_exts[i]; i++) {
#else
for (i = (sub_cp ? 3 : 0); sub_exts[i]; i++) {
#endif
#else
for (i = 0; sub_exts[i]; i++) {
#endif
if (strcmp(sub_exts[i], tmp_fname_ext) == 0) {
found = 1;
break;
}
}
// we have a (likely) subtitle file
if (found) {
int prio = 0;
if (!prio && tmp_sub_id)
{
sprintf(tmpresult, "%s %s", f_fname_trim, tmp_sub_id);
printf("dvdsublang...%s\n", tmpresult);
if (strcmp(tmp_fname_trim, tmpresult) == 0 && sub_match_fuzziness >= 1) {
// matches the movie name + lang extension
prio = 5;
}
}
if (!prio && strcmp(tmp_fname_trim, f_fname_trim) == 0) {
// matches the movie name
prio = 4;
}
if (!prio && (tmp = strstr(tmp_fname_trim, f_fname_trim)) && (sub_match_fuzziness >= 1)) {
// contains the movie name
tmp += strlen(f_fname_trim);
if (tmp_sub_id && strstr(tmp, tmp_sub_id)) {
// with sub_id specified prefer localized subtitles
prio = 3;
} else if ((tmp_sub_id == NULL) && whiteonly(tmp)) {
// without sub_id prefer "plain" name
prio = 3;
} else {
// with no localized subs found, try any else instead
prio = 2;
}
}
if (!prio) {
// doesn't contain the movie name
// don't try in the mplayer subtitle directory
if ((j == 0) && (sub_match_fuzziness >= 2)) {
prio = 1;
}
}
if (prio) {
prio += prio;
#ifdef USE_ICONV
if (i<3){ // prefer UTF-8 coded
prio++;
}
#endif
sprintf(tmpresult, "%s%s", j == 0 ? f_dir : path, de->d_name);
// fprintf(stderr, "%s priority %d\n", tmpresult, prio);
if ((f = fopen(tmpresult, "rt"))) {
fclose(f);
result[subcnt].priority = prio;
result[subcnt].fname = strdup(tmpresult);
subcnt++;
}
}
}
if (subcnt >= MAX_SUBTITLE_FILES) break;
}
closedir(d);
}
}
if (tmp_sub_id) free(tmp_sub_id);
free(f_dir);
free(f_fname);
free(f_fname_noext);
free(f_fname_trim);
free(tmp_fname_noext);
free(tmp_fname_trim);
free(tmp_fname_ext);
free(tmpresult);
qsort(result, subcnt, sizeof(subfn), compare_sub_priority);
result2 = (char**)malloc(sizeof(char*)*(subcnt+1));
memset(result2, 0, sizeof(char*)*(subcnt+1));
for (i = 0; i < subcnt; i++) {
result2[i] = result[i].fname;
}
result2[subcnt] = NULL;
free(result);
return result2;
}
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];
printf ("%i line%c (%li-%li)\n",
egysub->lines,
(1==egysub->lines)?' ':'s',
egysub->start,
egysub->end);
for (i=0; i<egysub->lines; i++) {
printf ("\t\t%d: %s%s", i,egysub->text[i], i==egysub->lines-1?"":" \n ");
}
printf ("\n");
}
printf ("Subtitle format %s time.\n",
subd->sub_uses_time ? "uses":"doesn't use");
printf ("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.txt", "w");
if (!fd) {
perror("dumpsub.txt: 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.txt\'.\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;
if ( !subd ) return;
if (subd->subtitles) {
for (i=0; i < subd->subtitles->lines; i++) free( subd->subtitles->text[i] );
free( subd->subtitles );
}
if (subd->filename) free( subd->filename );
free( subd );
}
#ifdef DUMPSUBS
int main(int argc, char **argv) { // for testing
sub_data *subd;
if(argc<2){
printf("\nUsage: subreader filename.sub\n\n");
exit(1);
}
sub_cp = argv[2];
subd = sub_read_file(argv[1]);
if(!subd){
printf("Couldn't load file.\n");
exit(1);
}
list_sub_file(subd);
return 0;
}
#endif
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