diff options
Diffstat (limited to 'celt/bands.c')
| -rw-r--r-- | celt/bands.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/celt/bands.c b/celt/bands.c index b88513ab..ef83a006 100644 --- a/celt/bands.c +++ b/celt/bands.c @@ -41,6 +41,21 @@ #include "mathops.h" #include "rate.h" +int hysteresis_decision(opus_val16 val, const opus_val16 *thresholds, const opus_val16 *hysteresis, int N, int prev) +{ + int i; + for (i=0;i<N;i++) + { + if (val < thresholds[i]) + break; + } + if (i>prev && val < thresholds[prev]+hysteresis[prev]) + i=prev; + if (i<prev && val > thresholds[prev-1]-hysteresis[prev-1]) + i=prev; + return i; +} + opus_uint32 celt_lcg_rand(opus_uint32 seed) { return 1664525 * seed + 1013904223; |