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aacdec: Clarify a channel mapping comment.

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Patch by Cyril Russo >stage nexvision laposte net<

Originally committed as revision 23351 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Cyril Russo 2010-05-27 14:50:19 +00:00 committed by Alex Converse
parent e84c276f31
commit 5d55bb9f11
1 changed files with 2 additions and 2 deletions
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4
libavcodec/aac.c
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@ -127,8 +127,8 @@ static ChannelElement *get_che(AACContext *ac, int type, int elem_id)
}
case 6:
/* Some streams incorrectly code 5.1 audio as SCE[0] CPE[0] CPE[1] SCE[1]
instead of SCE[0] CPE[0] CPE[0] LFE[0]. If we seem to have
encountered such a stream, transfer the LFE[0] element to SCE[1] */
instead of SCE[0] CPE[0] CPE[1] LFE[0]. If we seem to have
encountered such a stream, transfer the LFE[0] element to the SCE[1]'s mapping */
if (ac->tags_mapped == tags_per_config[ac->m4ac.chan_config] - 1 && (type == TYPE_LFE || type == TYPE_SCE)) {
ac->tags_mapped++;
return ac->tag_che_map[type][elem_id] = ac->che[TYPE_LFE][0];