static void exponents_from_scale_factors(MPADecodeContext *s, GranuleDef *g, int16_t *exponents) { const uint8_t *bstab, *pretab; int len, i, j, k, l, v0, shift, gain, gains[3]; int16_t *exp_ptr; exp_ptr = exponents; gain = g->global_gain - 210; shift = g->scalefac_scale + 1; bstab = band_size_long[s->sample_rate_index]; pretab = mpa_pretab[g->preflag]; for(i=0;i<g->long_end;i++) { v0 = gain - ((g->scale_factors[i] + pretab[i]) << shift); len = bstab[i]; for(j=len;j>0;j--) *exp_ptr++ = v0; } if (g->short_start < 13) { bstab = band_size_short[s->sample_rate_index]; gains[0] = gain - (g->subblock_gain[0] << 3); gains[1] = gain - (g->subblock_gain[1] << 3); gains[2] = gain - (g->subblock_gain[2] << 3); k = g->long_end; for(i=g->short_start;i<13;i++) { len = bstab[i]; for(l=0;l<3;l++) { v0 = gains[l] - (g->scale_factors[k++] << shift); for(j=len;j>0;j--) *exp_ptr++ = v0; } } } }