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mp3dec: fix reading the Xing tag

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The quality scale field is only supposed to be present if the fourth bit
is set. In practice, lame always sets it, but other tools might not.

CC:libav-stable@libav.org
This commit is contained in:
Anton Khirnov
2014-10-18 16:25:16 +02:00
parent 6df9d9b55d
commit 99143140de
1 changed files with 3 additions and 1 deletions
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4
libavformat/mp3dec.c
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@@ -36,6 +36,7 @@
#define XING_FLAG_FRAMES 0x01 #define XING_FLAG_FRAMES 0x01
#define XING_FLAG_SIZE 0x02 #define XING_FLAG_SIZE 0x02
#define XING_FLAG_TOC 0x04 #define XING_FLAG_TOC 0x04
#define XING_FLAC_QSCALE 0x08
#define XING_TOC_COUNT 100 #define XING_TOC_COUNT 100
@@ -165,7 +166,8 @@ static void mp3_parse_info_tag(AVFormatContext *s, AVStream *st,
st->time_base)); st->time_base));
/* VBR quality */ /* VBR quality */
avio_rb32(s->pb); if (v & XING_FLAC_QSCALE)
avio_rb32(s->pb);
/* Encoder short version string */ /* Encoder short version string */
memset(version, 0, sizeof(version)); memset(version, 0, sizeof(version));