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lavf/subviewerdec: Skip leading BOM. 

Fixes ticket #7661.
This commit is contained in:
Carl Eugen Hoyos 2019-01-24 00:22:47 +01:00
parent b5b6f6ad59
commit d3a6943804
1 changed files with 6 additions and 0 deletions
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6
libavformat/subviewerdec.c
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@ -27,6 +27,7 @@
#include "avformat.h" #include "avformat.h"
#include "internal.h" #include "internal.h"
#include "subtitles.h" #include "subtitles.h"
#include "avio_internal.h"
#include "libavcodec/internal.h" #include "libavcodec/internal.h"
#include "libavutil/avstring.h" #include "libavutil/avstring.h"
#include "libavutil/bprint.h" #include "libavutil/bprint.h"
@ -78,6 +79,11 @@ static int subviewer_read_header(AVFormatContext *s)
if (!st) if (!st)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
res = ffio_ensure_seekback(s->pb, 3);
if (res < 0)
return res;
if (avio_rb24(s->pb) != 0xefbbbf)
avio_seek(s->pb, -3, SEEK_CUR);
avpriv_set_pts_info(st, 64, 1, 100); avpriv_set_pts_info(st, 64, 1, 100);
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE; st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
st->codecpar->codec_id = AV_CODEC_ID_SUBVIEWER; st->codecpar->codec_id = AV_CODEC_ID_SUBVIEWER;