/*
 * 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"
#include "stream/stream.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;   ///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

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;
}

static subtitle *sub_read_line_sami(stream_t* st, 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;
    current->alignment = SUB_ALIGNMENT_BOTTOMCENTER;
    state = 0;

    /* read the first line */
    if (!s)
        if (!(s = stream_read_line(st, line, LINE_LEN))) 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, 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))) {
        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;
}


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) {
    char line[LINE_LEN+1];
    char line2[LINE_LEN+1];
    char *p, *next;
    int i;

    do {
    if (!stream_read_line (st, line, LINE_LEN)) 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;
}

static subtitle *sub_read_line_mpl2(stream_t *st,subtitle *current) {
    char line[LINE_LEN+1];
    char line2[LINE_LEN+1];
    char *p, *next;
    int i;

    do {
    if (!stream_read_line (st, line, LINE_LEN)) 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) {
    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)) 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)) 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_read_line_subviewer(stream_t *st,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 (!stream_read_line (st, line, LINE_LEN)) 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)) 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) {
    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)) 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)) 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) {
    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)) 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) {
    //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)) 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) {
/*
 * 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 (!stream_read_line (st, line, LINE_LEN)) 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]=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) {
    char line[LINE_LEN+1];
    char text[LINE_LEN+1], *s, *d;

    if (!stream_read_line (st, line, LINE_LEN))
    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) {
    char line[LINE_LEN+1];
    float a,b;
    int num=0;
    char *p, *q;

    do
    {
        if (!stream_read_line(st, line, LINE_LEN)) 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)) {
            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

static subtitle *sub_read_line_aqt(stream_t *st,subtitle *current) {
    char line[LINE_LEN+1];
    char *next;
    int i;

    while (1) {
    // try to locate next subtitle
        if (!stream_read_line (st, line, LINE_LEN))
        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 (!stream_read_line (st, line, LINE_LEN))
    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))
    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 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

static subtitle *sub_read_line_subrip09(stream_t *st,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 (!stream_read_line (st, line, LINE_LEN))
        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 (!stream_read_line (st, line, LINE_LEN))
    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 USE_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)
{
    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)) {
        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))
            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;
}

static int sub_autodetect (stream_t* st, int *uses_time) {
    char line[LINE_LEN+1];
    int i,j=0;
    char p;

    while (j < 100) {
    j++;
    if (!stream_read_line (st, line, LINE_LEN))
        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 (stream_t *st)
{
    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 (st && st->flags & STREAM_SEEK ) {
            cp_tmp = guess_cp(st, enca_lang, enca_fallback);
            free_cp_tmp = 1;
          } else {
            cp_tmp = enca_fallback;
            if (st)
              mp_msg(MSGT_SUBREADER,MSGL_WARN,"SUB: enca failed, stream must be seakable.\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");
#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");
    }
}

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;
        }
        *op='\0' ;
        free (sub->text[l]);
        sub->text[l] = ot;
    }
    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(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) {
    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_flip_commas?FRIBIDI_TYPE_ON:FRIBIDI_TYPE_L;
    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((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)(stream_t *st,subtitle *dest);
    void       (*post)(subtitle *dest);
    const char *name;
};

#ifdef HAVE_ENCA
void* guess_buffer_cp(unsigned char* buffer, int buflen, char *preferred_language, char *fallback)
{
    const char **languages;
    size_t langcnt;
    EncaAnalyser analyser;
    EncaEncoding encoding;
    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++) {
    const char *tmp;

    if (strcasecmp(languages[i], preferred_language) != 0) continue;
    analyser = enca_analyser_alloc(languages[i]);
    encoding = enca_analyse_const(analyser, buffer, buflen);
    tmp = enca_charset_name(encoding.charset, ENCA_NAME_STYLE_ICONV);
    if (tmp && encoding.charset != ENCA_CS_UNKNOWN) {
        detected_sub_cp = strdup(tmp);
        mp_msg(MSGT_SUBREADER, MSGL_INFO, "ENCA detected charset: %s\n", tmp);
    }
    enca_analyser_free(analyser);
    }

    free(languages);

    if (!detected_sub_cp) {
    detected_sub_cp = strdup(fallback);
    mp_msg(MSGT_SUBREADER, MSGL_INFO, "ENCA detection failed: fallback to %s\n", fallback);
    }

    return detected_sub_cp;
}

#define MAX_GUESS_BUFFER_SIZE (256*1024)
void* guess_cp(stream_t *st, char *preferred_language, char *fallback)
{
    size_t buflen;
    unsigned char *buffer;
    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) {
    stream_t* 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
    i = 0;
    fd=open_stream (filename, NULL, &i); 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);

    stream_reset(fd);
    stream_seek(fd,0);

#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 (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 USE_ICONV
      subcp_close();
          sub_utf8=sub_utf8_prev;
#endif
        return NULL;
    }

#ifdef USE_SORTSUB
    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 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
    }

    free_stream(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 = 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 = (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 = 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;
}

#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 (((const subfn*)a)->priority > ((const subfn*)b)->priority) {
    return -1;
    } else if (((const subfn*)a)->priority < ((const subfn*)b)->priority) {
    return 1;
    } else {
    return strcoll(((const subfn*)a)->fname, ((const subfn*)b)->fname);
    }
}

char** sub_filenames(const 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 = malloc(len);
    f_fname = malloc(len);
    f_fname_noext = malloc(len);
    f_fname_trim = malloc(len);

    tmp_fname_noext = malloc(len);
    tmp_fname_trim = malloc(len);
    tmp_fname_ext = malloc(len);

    tmpresult = malloc(len);

    result = malloc(sizeof(subfn)*MAX_SUBTITLE_FILES);
    memset(result, 0, sizeof(subfn)*MAX_SUBTITLE_FILES);

    subcnt = 0;

    tmp = strrchr(fname,'/');
#if defined(WIN32) || defined(__OS2__)
    if(!tmp)tmp = strrchr(fname,'\\');
    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 = 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 (strcasecmp(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);
            mp_msg(MSGT_SUBREADER,MSGL_INFO,"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 = 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];
        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;

    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 );
}

#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;
  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++;
}

#define MP_NOPTS_VALUE (-1LL<<63)
/**
 * \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;
}

#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
