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id3v2: strip trailing spaces from APIC tag 

The APIC description must be unique, and some ID3v2 tag writers add
spaces to write several APIC entries with the same description. The
trailing spaces simply serve as a way to disambiguate the description.
Do this so that API users do not have to special-case mp3 to fix this
cosmetic issue.

Requested-by: wm4
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
wm4 2015-05-07 23:56:37 +02:00 committed by Michael Niedermayer
parent 622f1468c9
commit d4007d1763
1 changed files with 11 additions and 0 deletions
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11
libavformat/id3v2.c
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@ -535,6 +535,13 @@ static void free_apic(void *obj)
av_freep(&apic);
}
static void rstrip_spaces(char *buf)
{
size_t len = strlen(buf);
while (len > 0 && buf[len - 1] == ' ')
buf[--len] = 0;
}
static void read_apic(AVFormatContext *s, AVIOContext *pb, int taglen,
const char *tag, ID3v2ExtraMeta **extra_meta,
int isv34)
@ -608,6 +615,10 @@ static void read_apic(AVFormatContext *s, AVIOContext *pb, int taglen,
new_extra->next = *extra_meta;
*extra_meta = new_extra;
// The description must be unique, and some ID3v2 tag writers add spaces
// to write several APIC entries with the same description.
rstrip_spaces(apic->description);
return;
fail: