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avcodec/dvdsub_parser: never return 0 when the input isnt 0

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Fixes a infinite loop
Fixes Ticket3804

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit cfdb30d2f1)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2014-08-02 00:27:23 +02:00
parent 3d10235b83
commit 8d48223a32
1 changed files with 1 additions and 1 deletions
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2
libavcodec/dvdsub_parser.c
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@@ -46,7 +46,7 @@ static int dvdsub_parse(AVCodecParserContext *s,
if (pc->packet_index == 0) { if (pc->packet_index == 0) {
if (buf_size < 2) if (buf_size < 2)
return 0; return buf_size;
pc->packet_len = AV_RB16(buf); pc->packet_len = AV_RB16(buf);
if (pc->packet_len == 0) /* HD-DVD subpicture packet */ if (pc->packet_len == 0) /* HD-DVD subpicture packet */
pc->packet_len = AV_RB32(buf+2); pc->packet_len = AV_RB32(buf+2);