From d7eabd50425a61b31e90c763a0c3e4316a725404 Mon Sep 17 00:00:00 2001 From: "Ronald S. Bultje" Date: Sat, 10 Mar 2012 14:28:08 -0800 Subject: mpc: pad mpc_CC/SCF[] tables to allow for negative indices. MPC8 allows indices of mpc_CC up to -1, and mpc_SCF up to -6, thus pad the tables by that much on the left end. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org --- libavcodec/mpc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'libavcodec/mpc.c') diff --git a/libavcodec/mpc.c b/libavcodec/mpc.c index 4573860525..6b15a33e5a 100644 --- a/libavcodec/mpc.c +++ b/libavcodec/mpc.c @@ -78,13 +78,13 @@ void ff_mpc_dequantize_and_synth(MPCContext * c, int maxband, void *data, int ch for(ch = 0; ch < 2; ch++){ if(bands[i].res[ch]){ j = 0; - mul = mpc_CC[bands[i].res[ch]] * mpc_SCF[bands[i].scf_idx[ch][0]]; + mul = mpc_CC[bands[i].res[ch] + 1] * mpc_SCF[bands[i].scf_idx[ch][0]+6]; for(; j < 12; j++) c->sb_samples[ch][j][i] = mul * c->Q[ch][j + off]; - mul = mpc_CC[bands[i].res[ch]] * mpc_SCF[bands[i].scf_idx[ch][1]]; + mul = mpc_CC[bands[i].res[ch] + 1] * mpc_SCF[bands[i].scf_idx[ch][1]+6]; for(; j < 24; j++) c->sb_samples[ch][j][i] = mul * c->Q[ch][j + off]; - mul = mpc_CC[bands[i].res[ch]] * mpc_SCF[bands[i].scf_idx[ch][2]]; + mul = mpc_CC[bands[i].res[ch] + 1] * mpc_SCF[bands[i].scf_idx[ch][2]+6]; for(; j < 36; j++) c->sb_samples[ch][j][i] = mul * c->Q[ch][j + off]; } -- cgit v1.2.3