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The codebook generator algorithm involves picking three

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different codebook centroids ("high utility", "low
utility" and "closest to the low utility one"). This
change avoid the corner case of choosing two times the
same centroid.

Originally committed as revision 14340 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak
2008-07-23 03:54:31 +00:00
parent 26b86e47c0
commit 5916af1954
1 changed files with 3 additions and 1 deletions
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4
libavcodec/elbg.c
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@@ -299,8 +299,10 @@ static void do_shiftings(elbg_data *elbg)
if (elbg->utility_inc[elbg->numCB-1] == 0) if (elbg->utility_inc[elbg->numCB-1] == 0)
return; return;
idx[1] = get_high_utility_cell(elbg);
idx[2] = get_closest_codebook(elbg, idx[0]); idx[2] = get_closest_codebook(elbg, idx[0]);
do {
idx[1] = get_high_utility_cell(elbg);
} while (idx[1] == idx[0] || idx[1] == idx[2]);
try_shift_candidate(elbg, idx); try_shift_candidate(elbg, idx);
} }