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Constrain the pitch gain to prevent potential instabilities.

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This commit is contained in:
Jean-Marc Valin 2009-10-16 23:16:47 -04:00
parent 163b02eb8e
commit d35d677543
3 changed files with 14 additions and 3 deletions
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3
libcelt/celt.c
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@ -88,6 +88,7 @@ struct CELTEncoder {
int delayedIntra;
celt_word16_t tonal_average;
int fold_decision;
celt_word16_t gain_prod;
int VBR_rate; /* Target number of 16th bits per frame */
celt_word16_t * restrict preemph_memE;
@ -650,7 +651,7 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig_t * pcm, celt_si
{
compute_mdcts(st->mode, 0, st->out_mem+pitch_index*C, pitch_freq, C);
has_pitch = compute_pitch_gain(st->mode, freq, pitch_freq, norm_rate, &gain_id, C);
has_pitch = compute_pitch_gain(st->mode, freq, pitch_freq, norm_rate, &gain_id, C, &st->gain_prod);
}
if (has_pitch)