LEVEL_DECAY       109 libavcodec/wavpack.c         sl[i]                   = LEVEL_DECAY(ctx->ch[i].slow_level);
LEVEL_DECAY       150 libavcodec/wavpack.c                 c->slow_level -= LEVEL_DECAY(c->slow_level);
LEVEL_DECAY       167 libavcodec/wavpack.c                 c->slow_level -= LEVEL_DECAY(c->slow_level);
LEVEL_DECAY       252 libavcodec/wavpack.c         c->slow_level += wp_log2(ret) - LEVEL_DECAY(c->slow_level);