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/*
ogmmerge -- utility for splicing together ogg bitstreams
from component media subtypes
subtitles.cpp
subtitle queueing and checking helper class
Written by Moritz Bunkus <moritz@bunkus.org>
Based on Xiph.org's 'oggmerge' found in their CVS repository
See http://www.xiph.org
Distributed under the GPL
see the file COPYING for details
or visit http://www.gnu.org/copyleft/gpl.html
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ogmmerge.h"
#include "subtitles.h"
subtitles_c::subtitles_c() {
first = NULL;
last = NULL;
}
subtitles_c::~subtitles_c() {
sub_t *current = first;
while (current != NULL) {
if (current->subs != NULL)
free(current->subs);
last = current;
current = current->next;
free(last);
}
}
void subtitles_c::add(ogg_int64_t nstart, ogg_int64_t nend, char *nsubs) {
sub_t *s;
s = (sub_t *)malloc(sizeof(sub_t));
if (s == NULL)
die("malloc");
s->subs = strdup(nsubs);
s->start = nstart;
s->end = nend;
s->next = NULL;
if (last == NULL) {
first = s;
last = s;
} else {
last->next = s;
last = s;
}
}
int subtitles_c::check() {
sub_t *current;
int error = 0;
char *c;
current = first;
while ((current != NULL) && (current->next != NULL)) {
if (current->end > current->next->start) {
if (verbose) {
char short_subs[21];
memset(short_subs, 0, 21);
strncpy(short_subs, current->subs, 20);
for (c = short_subs; *c != 0; c++)
if (*c == '\n')
*c = ' ';
fprintf(stdout, "subtitles: Warning: current entry ends after "
"the next one starts. This end: %02lld:%02lld:%02lld,%03lld"
" next start: %02lld:%02lld:%02lld,%03lld (\"%s\"...)\n",
current->end / (60 * 60 * 1000),
(current->end / (60 * 1000)) % 60,
(current->end / 1000) % 60,
current->end % 1000,
current->next->start / (60 * 60 * 1000),
(current->next->start / (60 * 1000)) % 60,
(current->next->start / 1000) % 60,
current->next->start % 1000,
short_subs);
}
current->end = current->next->start - 1;
}
current = current->next;
}
current = first;
while (current != NULL) {
if (current->start > current->end) {
error = 1;
if (verbose) {
char short_subs[21];
memset(short_subs, 0, 21);
strncpy(short_subs, current->subs, 20);
for (c = short_subs; *c != 0; c++)
if (*c == '\n')
*c = ' ';
fprintf(stdout, "subtitles: Warning: after fixing the time the "
"current entry begins after it ends. This start: "
"%02lld:%02lld:%02lld,%03lld this end: %02lld:%02lld:"
"%02lld,%03lld (\"%s\"...)\n",
current->start / (60 * 60 * 1000),
(current->start / (60 * 1000)) % 60,
(current->start / 1000) % 60,
current->start % 1000,
current->end / (60 * 60 * 1000),
(current->end / (60 * 1000)) % 60,
(current->end / 1000) % 60,
current->end % 1000,
short_subs);
}
}
current = current->next;
}
return error;
}
void subtitles_c::process(textsubs_packetizer_c *p) {
sub_t *current;
while ((current = get_next()) != NULL) {
p->process(current->start, current->end, current->subs,
(first == NULL ? 1 : 0));
free(current->subs);
free(current);
}
}
sub_t *subtitles_c::get_next() {
sub_t *current;
if (first == NULL)
return NULL;
current = first;
if (first == last) {
first = NULL;
last = NULL;
} else
first = first->next;
return current;
}
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