[FFmpeg-cvslog] imc: use correct position for flcoeffs2 calculation

[Andreas Cadhalpun]

ffmpeg | branch: release/2.5 | Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com> | Fri Jul 10 21:50:50 2015 +0200| [6c36f0b57c6e80b7e5980fc3755c5f396254e622] | committer: Andreas Cadhalpun

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 at gmx.at>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
(cherry picked from commit 75fd5ce4c1c0b2d96d71c74b650cefaaef519d27)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6c36f0b57c6e80b7e5980fc3755c5f396254e622
---

 libavcodec/imc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/imc.c b/libavcodec/imc.c
index 6c9ffd7..422d834 100644
--- a/libavcodec/imc.c
+++ b/libavcodec/imc.c
@@ -426,7 +426,7 @@ 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];