Commit 115fa35a authored by Timothy B. Terriberry's avatar Timothy B. Terriberry Committed by Jean-Marc Valin
Browse files

Fix CNG when effEBands is less than nbEBands.

We were trying to normalize bands that didn't actually exist (e.g.,
 the last band with 320-sample frames at 32kHz).
Thanks to John Ridges for the report.
parent 168888f7
......@@ -1967,17 +1967,26 @@ static void celt_decode_lost(CELTDecoder * restrict st, celt_word16 * restrict p
log2Amp(st->mode, st->start, st->end, bandE, backgroundLogE, C);
seed = st->rng;
for (i=0;i<C*N;i++)
for (c=0;c<C;c++)
seed = lcg_rand(seed);
X[i] = (celt_int32)(seed)>>20;
for (i=0;i<st->mode->effEBands;i++)
int j;
int boffs;
int blen;
boffs = N*c+(st->mode->eBands[i]<<LM);
blen = (st->mode->eBands[i+1]-st->mode->eBands[i])<<LM;
for (j=0;j<blen;j++)
seed = lcg_rand(seed);
X[boffs+j] = (celt_int32)(seed)>>20;
renormalise_vector(X+boffs, blen, Q15ONE);
st->rng = seed;
for (c=0;c<C;c++)
for (i=0;i<st->mode->nbEBands;i++)
renormalise_vector(X+N*c+(st->mode->eBands[i]<<LM), (st->mode->eBands[i+1]-st->mode->eBands[i])<<LM, Q15ONE);
denormalise_bands(st->mode, X, freq, bandE, st->mode->nbEBands, C, 1<<LM);
denormalise_bands(st->mode, X, freq, bandE, st->mode->effEBands, C, 1<<LM);
compute_inv_mdcts(st->mode, 0, freq, out_syn, overlap_mem, C, LM);
plc = 0;
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