fg_simulate_grain_blk8x8

fg_simulate_grain_blk8x8.c

void fg_simulate_grain_blk8x8(int32_t *grainStripe, uint32_t grainStripeOffsetBlk8,
  uint32_t width, uint8_t log2ScaleFactor, int16_t scaleFactor, uint32_t kOffset, uint32_t lOffset, uint8_t h, uint8_t v, uint32_t xSize)
{
  uint32_t k, l;
  uint32_t idx, idx_offset, idx_offset_l, grainStripeOffsetBlk8_l;

  idx_offset = ( h*NUM_CUT_OFF_FREQ +  v ) * DATA_BASE_SIZE  * DATA_BASE_SIZE;
  for (l = 0; l < 8; l++) /* y direction */
  {
    idx_offset_l            = idx_offset + (l + lOffset) * DATA_BASE_SIZE;
    grainStripeOffsetBlk8_l = grainStripeOffsetBlk8 + (l*width);
    for (k = 0; k < xSize; k++) /* x direction */
    {
      idx = idx_offset_l + (k + kOffset);
      grainStripe[grainStripeOffsetBlk8_l + k ] = ((scaleFactor * fg_data_base[idx]) >> (log2ScaleFactor + GRAIN_SCALE));
    }
  }
  return;
}