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/* decutf8sub.c
Copyright (c) 2003-2018 HandBrake Team
This file is part of the HandBrake source code
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License v2.
For full terms see the file COPYING file or visit http://www.gnu.org/licenses/gpl-2.0.html
*/
/*
* Decoder for UTF-8 subtitles obtained from file input-sources.
*
* Input and output packet format is UTF-8 encoded text,
* with limited HTML-style markup (only <b>, <i>, and <u>).
*
* @author David Foster (davidfstr)
*/
#include <stdlib.h>
#include <stdio.h>
#include "hb.h"
#include "decsrtsub.h"
struct hb_work_private_s
{
int line; // SSA line number
};
static int decutf8Init(hb_work_object_t *w, hb_job_t *job)
{
hb_work_private_t * pv;
pv = calloc( 1, sizeof( hb_work_private_t ) );
if (pv == NULL)
return 1;
w->private_data = pv;
// Generate generic SSA Script Info.
int height = job->title->geometry.height - job->crop[0] - job->crop[1];
int width = job->title->geometry.width - job->crop[2] - job->crop[3];
hb_subtitle_add_ssa_header(w->subtitle, HB_FONT_SANS,
.066 * job->title->geometry.height,
width, height);
return 0;
}
static int decutf8Work(hb_work_object_t * w,
hb_buffer_t **buf_in, hb_buffer_t **buf_out)
{
hb_work_private_t * pv = w->private_data;
hb_buffer_t * in = *buf_in;
hb_buffer_t *out = *buf_in;
*buf_in = NULL;
if (in->s.flags & HB_BUF_FLAG_EOF)
{
*buf_out = in;
return HB_WORK_DONE;
}
// Warn if the subtitle's duration has not been passed through by the
// demuxer, which will prevent the subtitle from displaying at all
if (out->s.stop == 0)
{
hb_log("decutf8sub: subtitle packet lacks duration");
}
hb_srt_to_ssa(out, ++pv->line);
out->s.frametype = HB_FRAME_SUBTITLE;
*buf_out = out;
return HB_WORK_OK;
}
static void decutf8Close(hb_work_object_t *w)
{
free(w->private_data);
}
hb_work_object_t hb_decutf8sub =
{
WORK_DECUTF8SUB,
"UTF-8 Subtitle Decoder",
decutf8Init,
decutf8Work,
decutf8Close
};
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