mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.7 KiB
86 lines
2.7 KiB
/* |
|
* Copyright (c) 2012 Clément Bœsch |
|
* |
|
* 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 |
|
*/ |
|
|
|
/** |
|
* @file |
|
* RealText subtitle decoder |
|
* @see http://service.real.com/help/library/guides/ProductionGuide/prodguide/htmfiles/realtext.htm |
|
*/ |
|
|
|
#include "avcodec.h" |
|
#include "ass.h" |
|
#include "codec_internal.h" |
|
#include "libavutil/avstring.h" |
|
#include "libavutil/bprint.h" |
|
|
|
static int rt_event_to_ass(AVBPrint *buf, const char *p) |
|
{ |
|
int prev_chr_is_space = 1; |
|
|
|
while (*p) { |
|
if (*p != '<') { |
|
if (!av_isspace(*p)) |
|
av_bprint_chars(buf, *p, 1); |
|
else if (!prev_chr_is_space) |
|
av_bprint_chars(buf, ' ', 1); |
|
prev_chr_is_space = av_isspace(*p); |
|
} else { |
|
const char *end = strchr(p, '>'); |
|
if (!end) |
|
break; |
|
if (!av_strncasecmp(p, "<br/>", 5) || |
|
!av_strncasecmp(p, "<br>", 4)) { |
|
av_bprintf(buf, "\\N"); |
|
} |
|
p = end; |
|
} |
|
p++; |
|
} |
|
return 0; |
|
} |
|
|
|
static int realtext_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, |
|
int *got_sub_ptr, const AVPacket *avpkt) |
|
{ |
|
int ret = 0; |
|
const char *ptr = avpkt->data; |
|
FFASSDecoderContext *s = avctx->priv_data; |
|
AVBPrint buf; |
|
|
|
av_bprint_init(&buf, 0, 4096); |
|
if (ptr && avpkt->size > 0 && !rt_event_to_ass(&buf, ptr)) |
|
ret = ff_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL); |
|
av_bprint_finalize(&buf, NULL); |
|
if (ret < 0) |
|
return ret; |
|
*got_sub_ptr = sub->num_rects > 0; |
|
return avpkt->size; |
|
} |
|
|
|
const FFCodec ff_realtext_decoder = { |
|
.p.name = "realtext", |
|
.p.long_name = NULL_IF_CONFIG_SMALL("RealText subtitle"), |
|
.p.type = AVMEDIA_TYPE_SUBTITLE, |
|
.p.id = AV_CODEC_ID_REALTEXT, |
|
FF_CODEC_DECODE_SUB_CB(realtext_decode_frame), |
|
.init = ff_ass_subtitle_header_default, |
|
.flush = ff_ass_decoder_flush, |
|
.priv_data_size = sizeof(FFASSDecoderContext), |
|
};
|
|
|