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imc: use correct position for flcoeffs2 calculation 

flcoeffs2[pos] should be the log2 of flcoeffs1[pos].
flcoeffs1[0] can be 0 here, thus flcoeffs2[pos] gets set to -inf,
causing problems further down.

This seems to have been copied from imc_decode_level_coefficients in
commit 4eb4bb3 without updating the position.

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
(cherry picked from commit 75fd5ce4c1)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun 2015-07-10 21:50:50 +02:00
parent 6f024dfd53
commit ba944121e2
1 changed files with 1 additions and 1 deletions
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2
libavcodec/imc.c
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@ -420,7 +420,7 @@ static void imc_decode_level_coefficients_raw(IMCContext *q, int *levlCoeffBuf,
pos = q->coef0_pos;
flcoeffs1[pos] = 20000.0 / pow (2, levlCoeffBuf[0] * 0.18945); // 0.18945 = log2(10) * 0.05703125
flcoeffs2[pos] = log2f(flcoeffs1[0]);
flcoeffs2[pos] = log2f(flcoeffs1[pos]);
tmp = flcoeffs1[pos];
tmp2 = flcoeffs2[pos];