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/*
* SSA/ASS common funtions
* Copyright (c) 2010 Aurelien Jacobs <aurel@gnuage.org>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "ass.h"
void ff_ass_init(AVSubtitle *sub)
{
memset(sub, 0, sizeof(*sub));
}
static int ts_to_string(char *str, int strlen, int ts)
{
int h, m, s;
h = ts/360000; ts -= 360000*h;
m = ts/ 6000; ts -= 6000*m;
s = ts/ 100; ts -= 100*s;
return snprintf(str, strlen, "%d:%02d:%02d.%02d", h, m, s, ts);
}
int ff_ass_add_rect(AVSubtitle *sub, const char *dialog,
int ts_start, int ts_end, int raw)
{
int len = 0, dlen, duration = ts_end - ts_start;
char s_start[16], s_end[16], header[48] = {0};
AVSubtitleRect **rects;
if (!raw) {
ts_to_string(s_start, sizeof(s_start), ts_start);
ts_to_string(s_end, sizeof(s_end), ts_end );
len = snprintf(header, sizeof(header), "Dialogue: 0,%s,%s,",
s_start, s_end);
}
dlen = strcspn(dialog, "\n");
dlen += dialog[dlen] == '\n';
rects = av_realloc(sub->rects, (sub->num_rects+1) * sizeof(*sub->rects));
if (!rects)
return AVERROR(ENOMEM);
sub->rects = rects;
sub->end_display_time = FFMAX(sub->end_display_time, 10 * duration);
rects[sub->num_rects] = av_mallocz(sizeof(*rects[0]));
rects[sub->num_rects]->type = SUBTITLE_ASS;
rects[sub->num_rects]->ass = av_malloc(len + dlen + 1);
strcpy (rects[sub->num_rects]->ass , header);
strncpy(rects[sub->num_rects]->ass + len, dialog, dlen);
rects[sub->num_rects]->ass[len+dlen] = 0;
sub->num_rects++;
return dlen;
}
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