/*
 *  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 "./vpx_config.h"
#include "vp9_rtcd.h"
#include "vp9/common/vp9_blockd.h"

static INLINE void recon(int rows, int cols,
                         const uint8_t *pred_ptr, int pred_stride,
                         const int16_t *diff_ptr, int diff_stride,
                         uint8_t *dst_ptr, int dst_stride) {
  int r, c;

  for (r = 0; r < rows; r++) {
    for (c = 0; c < cols; c++)
      dst_ptr[c] = clip_pixel(diff_ptr[c] + pred_ptr[c]);

    dst_ptr += dst_stride;
    diff_ptr += diff_stride;
    pred_ptr += pred_stride;
  }
}


void vp9_recon_b_c(uint8_t *pred_ptr, int16_t *diff_ptr, uint8_t *dst_ptr,
                   int stride) {
  recon(4, 4, pred_ptr, stride, diff_ptr, 16, dst_ptr, stride);
}

void vp9_recon_uv_b_c(uint8_t *pred_ptr, int16_t *diff_ptr, uint8_t *dst_ptr,
                      int stride) {
  recon(4, 4, pred_ptr, stride, diff_ptr, 8, dst_ptr, stride);
}

void vp9_recon4b_c(uint8_t *pred_ptr, int16_t *diff_ptr, uint8_t *dst_ptr,
                   int stride) {
  recon(4, 16, pred_ptr, stride, diff_ptr, 16, dst_ptr, stride);
}

void vp9_recon2b_c(uint8_t *pred_ptr, int16_t *diff_ptr, uint8_t *dst_ptr,
                   int stride) {
  recon(4, 8, pred_ptr, stride, diff_ptr, 8, dst_ptr, stride);
}

void vp9_recon_sby_c(MACROBLOCKD *mb, BLOCK_SIZE_TYPE bsize) {
  const int bw = 16 << mb_width_log2(bsize), bh = 16 << mb_height_log2(bsize);
  int x, y;
  const int stride = mb->plane[0].dst.stride;
  uint8_t *dst = mb->plane[0].dst.buf;
  const int16_t *diff = mb->plane[0].diff;

  for (y = 0; y < bh; y++) {
    for (x = 0; x < bw; x++)
      dst[x] = clip_pixel(dst[x] + diff[x]);

    dst += stride;
    diff += bw;
  }
}

void vp9_recon_sbuv_c(MACROBLOCKD *mb, BLOCK_SIZE_TYPE bsize) {
  const int bwl = mb_width_log2(bsize), bhl = mb_height_log2(bsize);
  const int bw = 8 << bwl, bh = 8 << bhl;
  int x, y;
  const int stride =  mb->plane[1].dst.stride;
  uint8_t *u_dst = mb->plane[1].dst.buf;
  uint8_t *v_dst = mb->plane[2].dst.buf;
  const int16_t *u_diff = mb->plane[1].diff;
  const int16_t *v_diff = mb->plane[2].diff;

  for (y = 0; y < bh; y++) {
    for (x = 0; x < bw; x++) {
      u_dst[x] = clip_pixel(u_dst[x] + u_diff[x]);
      v_dst[x] = clip_pixel(v_dst[x] + v_diff[x]);
    }

    u_dst += stride;
    v_dst += stride;
    u_diff += bw;
    v_diff += bw;
  }
}

void vp9_recon_sb_c(MACROBLOCKD *xd, BLOCK_SIZE_TYPE bsize) {
  vp9_recon_sby(xd, bsize);
  vp9_recon_sbuv(xd, bsize);
}