/*

 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.

 *

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

 */

#include "blockd.h"

void vp8_setup_block_dptrs(MACROBLOCKD *x) {

  int r, c;

  for (r = 0; r < 4; ++r) {

    for (c = 0; c < 4; ++c) {

      x->block[r * 4 + c].predictor = x->predictor + r * 4 * 16 + c * 4;

    }

  }

  for (r = 0; r < 2; ++r) {

    for (c = 0; c < 2; ++c) {

      x->block[16 + r * 2 + c].predictor =

          x->predictor + 256 + r * 4 * 8 + c * 4;

    }

  }

  for (r = 0; r < 2; ++r) {

    for (c = 0; c < 2; ++c) {

      x->block[20 + r * 2 + c].predictor =

          x->predictor + 320 + r * 4 * 8 + c * 4;

    }

  }

  for (r = 0; r < 25; ++r) {

    x->block[r].qcoeff = x->qcoeff + r * 16;

    x->block[r].dqcoeff = x->dqcoeff + r * 16;

    x->block[r].eob = x->eobs + r;

  }

}

void vp8_build_block_doffsets(MACROBLOCKD *x) {

  int block;

  for (block = 0; block < 16; ++block) /* y blocks */

  {

    x->block[block].offset =

        (block >> 2) * 4 * x->dst.y_stride + (block & 3) * 4;

  }

  for (block = 16; block < 20; ++block) /* U and V blocks */

  {

    x->block[block + 4].offset = x->block[block].offset =

        ((block - 16) >> 1) * 4 * x->dst.uv_stride + (block & 1) * 4;

  }

}