uint8_t collapse_masks[CELT_MAX_BANDS];
- int band_bins[CELT_MAX_BANDS]; /* MDCT bins per band */
- float *band_coeffs[CELT_MAX_BANDS];
-
/* buffer for mdct output + postfilter */
DECLARE_ALIGNED(32, float, buf)[2048];
DECLARE_ALIGNED(32, float, coeffs)[CELT_MAX_FRAME_SIZE];
for (ch = 0; ch < f->channels; ch++) {
CeltBlock *block = &f->block[ch];
- float *start = block->coeffs;
for (i = 0; i < CELT_MAX_BANDS; i++) {
float ener = 0.0f;
+ int band_offset = ff_celt_freq_bands[i] << f->size;
+ int band_size = ff_celt_freq_range[i] << f->size;
+ float *coeffs = &block->coeffs[band_offset];
- /* Calculate band bins */
- block->band_bins[i] = ff_celt_freq_range[i] << f->size;
- block->band_coeffs[i] = start;
- start += block->band_bins[i];
-
- /* Normalize band energy */
- for (j = 0; j < block->band_bins[i]; j++)
- ener += block->band_coeffs[i][j]*block->band_coeffs[i][j];
+ for (j = 0; j < band_size; j++)
+ ener += coeffs[j]*coeffs[j];
block->lin_energy[i] = sqrtf(ener) + FLT_EPSILON;
ener = 1.0f/block->lin_energy[i];
- for (j = 0; j < block->band_bins[i]; j++)
- block->band_coeffs[i][j] *= ener;
+ for (j = 0; j < band_size; j++)
+ coeffs[j] *= ener;
block->energy[i] = log2f(block->lin_energy[i]) - ff_celt_mean_energy[i];