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mov: Read alternate absolute path in dref alis 

Absolute paths can be stored in alis type 2 and 18 according to my research:
the first is the canonical MacOS filepath, with path level separated by
colons, and the volume name within the filepath, while the second should be the
absolute filesystem path from the mount point.
This commit is contained in:
Vittorio Giovara 2015-04-07 15:06:04 +02:00
parent 22526c1f55
commit 376589e5dd
1 changed files with 3 additions and 1 deletions
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4
libavformat/mov.c
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@ -518,12 +518,14 @@ static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
if (len&1)
len += 1;
if (type == 2) { // absolute path
if (type == 2 || type == 18) { // absolute path
av_free(dref->path);
dref->path = av_mallocz(len+1);
if (!dref->path)
return AVERROR(ENOMEM);
avio_read(pb, dref->path, len);
if (type == 18) // no additional processing needed
continue;
if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
len -= volume_len;
memmove(dref->path, dref->path+volume_len, len);