From 37ddd3833219fa7b913fff3f5cccc6878b047e6b Mon Sep 17 00:00:00 2001 From: Alex Converse Date: Fri, 4 May 2012 10:27:03 -0700 Subject: [PATCH] celp filters: Do not read earlier than the start of the 'out' vector. CC: libav-stable@libav.org --- libavcodec/celp_filters.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/libavcodec/celp_filters.c b/libavcodec/celp_filters.c index 25a6744b04..849cda439e 100644 --- a/libavcodec/celp_filters.c +++ b/libavcodec/celp_filters.c @@ -133,9 +133,8 @@ void ff_celp_lp_synthesis_filterf(float *out, const float *filter_coeffs, out2 -= val * old_out2; out3 -= val * old_out3; - old_out3 = out[-5]; - for (i = 5; i <= filter_length; i += 2) { + old_out3 = out[-i]; val = filter_coeffs[i-1]; out0 -= val * old_out3; @@ -154,7 +153,6 @@ void ff_celp_lp_synthesis_filterf(float *out, const float *filter_coeffs, FFSWAP(float, old_out0, old_out2); old_out1 = old_out3; - old_out3 = out[-i-2]; } tmp0 = out0;