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Code Issues Releases Activity

aacenc: Fix determination of Mid/Side Mode.

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In adjust_frame_information(), msc is incremented for each sfb in each
sub-window then compared against max_sfb which is for a single sub-window.

This resulted in frames using EIGHT_SHORT_SEQUENCE where the first few
sub-windows increment msc to a value that results in ms_mode == 2. Even
though only some of the bands are actually using Mid/Side.
This commit is contained in:
Nathan Caldwell
2011-06-28 21:11:39 -06:00
committed by Alex Converse
parent d3a6c2ab7e
commit 98add74e85
1 changed files with 1 additions and 1 deletions
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2
libavcodec/aacenc.c
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@@ -364,7 +364,7 @@ static void adjust_frame_information(AACEncContext *apc, ChannelElement *cpe, in
if (msc == 0 || ics0->max_sfb == 0) if (msc == 0 || ics0->max_sfb == 0)
cpe->ms_mode = 0; cpe->ms_mode = 0;
else else
cpe->ms_mode = msc < ics0->max_sfb ? 1 : 2; cpe->ms_mode = msc < ics0->max_sfb * ics0->num_windows ? 1 : 2;
} }
} }