chromium/third_party/libaom/source/libaom/aom_dsp/variance.c

/*
 * Copyright (c) 2016, Alliance for Open Media. All rights reserved.
 *
 * This source code is subject to the terms of the BSD 2 Clause License and
 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
 * was not distributed with this source code in the LICENSE file, you can
 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
 * Media Patent License 1.0 was not distributed with this source code in the
 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
 */
#include <assert.h>
#include <stdlib.h>

#include "config/aom_config.h"
#include "config/aom_dsp_rtcd.h"

#include "aom/aom_integer.h"
#include "aom_ports/mem.h"

#include "aom_dsp/aom_filter.h"
#include "aom_dsp/blend.h"
#include "aom_dsp/variance.h"

#include "av1/common/filter.h"
#include "av1/common/reconinter.h"

#if !CONFIG_REALTIME_ONLY
uint32_t aom_get_mb_ss_c(const int16_t *a) {
  unsigned int i, sum = 0;

  for (i = 0; i < 256; ++i) {
    sum += a[i] * a[i];
  }

  return sum;
}
#endif  // !CONFIG_REALTIME_ONLY

static void variance(const uint8_t *a, int a_stride, const uint8_t *b,
                     int b_stride, int w, int h, uint32_t *sse, int *sum) { … }

uint32_t aom_sse_odd_size(const uint8_t *a, int a_stride, const uint8_t *b,
                          int b_stride, int w, int h) { … }

// Applies a 1-D 2-tap bilinear filter to the source block in either horizontal
// or vertical direction to produce the filtered output block. Used to implement
// the first-pass of 2-D separable filter.
//
// Produces int16_t output to retain precision for the next pass. Two filter
// taps should sum to FILTER_WEIGHT. pixel_step defines whether the filter is
// applied horizontally (pixel_step = 1) or vertically (pixel_step = stride).
// It defines the offset required to move from one input to the next.
static void var_filter_block2d_bil_first_pass_c(
    const uint8_t *a, uint16_t *b, unsigned int src_pixels_per_line,
    unsigned int pixel_step, unsigned int output_height,
    unsigned int output_width, const uint8_t *filter) { … }

// Applies a 1-D 2-tap bilinear filter to the source block in either horizontal
// or vertical direction to produce the filtered output block. Used to implement
// the second-pass of 2-D separable filter.
//
// Requires 16-bit input as produced by filter_block2d_bil_first_pass. Two
// filter taps should sum to FILTER_WEIGHT. pixel_step defines whether the
// filter is applied horizontally (pixel_step = 1) or vertically
// (pixel_step = stride). It defines the offset required to move from one input
// to the next. Output is 8-bit.
static void var_filter_block2d_bil_second_pass_c(
    const uint16_t *a, uint8_t *b, unsigned int src_pixels_per_line,
    unsigned int pixel_step, unsigned int output_height,
    unsigned int output_width, const uint8_t *filter) { … }

#define VAR(W, H) …

#define SUBPIX_VAR(W, H) …

#define SUBPIX_AVG_VAR(W, H) …

void aom_get_var_sse_sum_8x8_quad_c(const uint8_t *a, int a_stride,
                                    const uint8_t *b, int b_stride,
                                    uint32_t *sse8x8, int *sum8x8,
                                    unsigned int *tot_sse, int *tot_sum,
                                    uint32_t *var8x8) { … }

void aom_get_var_sse_sum_16x16_dual_c(const uint8_t *src_ptr, int source_stride,
                                      const uint8_t *ref_ptr, int ref_stride,
                                      uint32_t *sse16x16, unsigned int *tot_sse,
                                      int *tot_sum, uint32_t *var16x16) { … }

/* Identical to the variance call except it does not calculate the
 * sse - sum^2 / w*h and returns sse in addtion to modifying the passed in
 * variable.
 */
#define MSE(W, H) …

/* All three forms of the variance are available in the same sizes. */
#define VARIANCES(W, H) …

VARIANCES(128, 128)
VARIANCES(128, 64)
VARIANCES(64, 128)
VARIANCES(64, 64)
VARIANCES(64, 32)
VARIANCES(32, 64)
VARIANCES(32, 32)
VARIANCES(32, 16)
VARIANCES(16, 32)
VARIANCES(16, 16)
VARIANCES(16, 8)
VARIANCES(8, 16)
VARIANCES(8, 8)
VARIANCES(8, 4)
VARIANCES(4, 8)
VARIANCES(4, 4)

// Realtime mode doesn't use rectangular blocks.
#if !CONFIG_REALTIME_ONLY
VARIANCES(4, 16)
VARIANCES(16, 4)
VARIANCES(8, 32)
VARIANCES(32, 8)
VARIANCES(16, 64)
VARIANCES(64, 16)
#endif

MSE(…)
MSE(…)
MSE(…)
MSE(…)

void aom_comp_avg_pred_c(uint8_t *comp_pred, const uint8_t *pred, int width,
                         int height, const uint8_t *ref, int ref_stride) { … }

void aom_dist_wtd_comp_avg_pred_c(uint8_t *comp_pred, const uint8_t *pred,
                                  int width, int height, const uint8_t *ref,
                                  int ref_stride,
                                  const DIST_WTD_COMP_PARAMS *jcp_param) { … }

#if CONFIG_AV1_HIGHBITDEPTH
static void highbd_variance64(const uint8_t *a8, int a_stride,
                              const uint8_t *b8, int b_stride, int w, int h,
                              uint64_t *sse, int64_t *sum) {
  const uint16_t *a = CONVERT_TO_SHORTPTR(a8);
  const uint16_t *b = CONVERT_TO_SHORTPTR(b8);
  int64_t tsum = 0;
  uint64_t tsse = 0;
  for (int i = 0; i < h; ++i) {
    int32_t lsum = 0;
    for (int j = 0; j < w; ++j) {
      const int diff = a[j] - b[j];
      lsum += diff;
      tsse += (uint32_t)(diff * diff);
    }
    tsum += lsum;
    a += a_stride;
    b += b_stride;
  }
  *sum = tsum;
  *sse = tsse;
}

uint64_t aom_highbd_sse_odd_size(const uint8_t *a, int a_stride,
                                 const uint8_t *b, int b_stride, int w, int h) {
  uint64_t sse;
  int64_t sum;
  highbd_variance64(a, a_stride, b, b_stride, w, h, &sse, &sum);
  return sse;
}

static void highbd_8_variance(const uint8_t *a8, int a_stride,
                              const uint8_t *b8, int b_stride, int w, int h,
                              uint32_t *sse, int *sum) {
  uint64_t sse_long = 0;
  int64_t sum_long = 0;
  highbd_variance64(a8, a_stride, b8, b_stride, w, h, &sse_long, &sum_long);
  *sse = (uint32_t)sse_long;
  *sum = (int)sum_long;
}

static void highbd_10_variance(const uint8_t *a8, int a_stride,
                               const uint8_t *b8, int b_stride, int w, int h,
                               uint32_t *sse, int *sum) {
  uint64_t sse_long = 0;
  int64_t sum_long = 0;
  highbd_variance64(a8, a_stride, b8, b_stride, w, h, &sse_long, &sum_long);
  *sse = (uint32_t)ROUND_POWER_OF_TWO(sse_long, 4);
  *sum = (int)ROUND_POWER_OF_TWO(sum_long, 2);
}

static void highbd_12_variance(const uint8_t *a8, int a_stride,
                               const uint8_t *b8, int b_stride, int w, int h,
                               uint32_t *sse, int *sum) {
  uint64_t sse_long = 0;
  int64_t sum_long = 0;
  highbd_variance64(a8, a_stride, b8, b_stride, w, h, &sse_long, &sum_long);
  *sse = (uint32_t)ROUND_POWER_OF_TWO(sse_long, 8);
  *sum = (int)ROUND_POWER_OF_TWO(sum_long, 4);
}

#define HIGHBD_VAR …

#define HIGHBD_MSE …

void aom_highbd_var_filter_block2d_bil_first_pass(
    const uint8_t *src_ptr8, uint16_t *output_ptr,
    unsigned int src_pixels_per_line, int pixel_step,
    unsigned int output_height, unsigned int output_width,
    const uint8_t *filter) {
  unsigned int i, j;
  uint16_t *src_ptr = CONVERT_TO_SHORTPTR(src_ptr8);
  for (i = 0; i < output_height; ++i) {
    for (j = 0; j < output_width; ++j) {
      output_ptr[j] = ROUND_POWER_OF_TWO(
          (int)src_ptr[0] * filter[0] + (int)src_ptr[pixel_step] * filter[1],
          FILTER_BITS);

      ++src_ptr;
    }

    // Next row...
    src_ptr += src_pixels_per_line - output_width;
    output_ptr += output_width;
  }
}

void aom_highbd_var_filter_block2d_bil_second_pass(
    const uint16_t *src_ptr, uint16_t *output_ptr,
    unsigned int src_pixels_per_line, unsigned int pixel_step,
    unsigned int output_height, unsigned int output_width,
    const uint8_t *filter) {
  unsigned int i, j;

  for (i = 0; i < output_height; ++i) {
    for (j = 0; j < output_width; ++j) {
      output_ptr[j] = ROUND_POWER_OF_TWO(
          (int)src_ptr[0] * filter[0] + (int)src_ptr[pixel_step] * filter[1],
          FILTER_BITS);
      ++src_ptr;
    }

    src_ptr += src_pixels_per_line - output_width;
    output_ptr += output_width;
  }
}

#define HIGHBD_SUBPIX_VAR …

#define HIGHBD_SUBPIX_AVG_VAR …

/* All three forms of the variance are available in the same sizes. */
#define HIGHBD_VARIANCES …

HIGHBD_VARIANCES(128, 128)
HIGHBD_VARIANCES(128, 64)
HIGHBD_VARIANCES(64, 128)
HIGHBD_VARIANCES(64, 64)
HIGHBD_VARIANCES(64, 32)
HIGHBD_VARIANCES(32, 64)
HIGHBD_VARIANCES(32, 32)
HIGHBD_VARIANCES(32, 16)
HIGHBD_VARIANCES(16, 32)
HIGHBD_VARIANCES(16, 16)
HIGHBD_VARIANCES(16, 8)
HIGHBD_VARIANCES(8, 16)
HIGHBD_VARIANCES(8, 8)
HIGHBD_VARIANCES(8, 4)
HIGHBD_VARIANCES(4, 8)
HIGHBD_VARIANCES(4, 4)

// Realtime mode doesn't use 4x rectangular blocks.
#if !CONFIG_REALTIME_ONLY
HIGHBD_VARIANCES(4, 16)
HIGHBD_VARIANCES(16, 4)
HIGHBD_VARIANCES(8, 32)
HIGHBD_VARIANCES(32, 8)
HIGHBD_VARIANCES(16, 64)
HIGHBD_VARIANCES(64, 16)
#endif

HIGHBD_MSE(16, 16)
HIGHBD_MSE(16, 8)
HIGHBD_MSE(8, 16)
HIGHBD_MSE(8, 8)

void aom_highbd_comp_avg_pred_c(uint8_t *comp_pred8, const uint8_t *pred8,
                                int width, int height, const uint8_t *ref8,
                                int ref_stride) {
  int i, j;
  uint16_t *pred = CONVERT_TO_SHORTPTR(pred8);
  uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
  uint16_t *comp_pred = CONVERT_TO_SHORTPTR(comp_pred8);
  for (i = 0; i < height; ++i) {
    for (j = 0; j < width; ++j) {
      const int tmp = pred[j] + ref[j];
      comp_pred[j] = ROUND_POWER_OF_TWO(tmp, 1);
    }
    comp_pred += width;
    pred += width;
    ref += ref_stride;
  }
}

void aom_highbd_dist_wtd_comp_avg_pred_c(
    uint8_t *comp_pred8, const uint8_t *pred8, int width, int height,
    const uint8_t *ref8, int ref_stride,
    const DIST_WTD_COMP_PARAMS *jcp_param) {
  int i, j;
  const int fwd_offset = jcp_param->fwd_offset;
  const int bck_offset = jcp_param->bck_offset;
  uint16_t *pred = CONVERT_TO_SHORTPTR(pred8);
  uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
  uint16_t *comp_pred = CONVERT_TO_SHORTPTR(comp_pred8);

  for (i = 0; i < height; ++i) {
    for (j = 0; j < width; ++j) {
      int tmp = pred[j] * bck_offset + ref[j] * fwd_offset;
      tmp = ROUND_POWER_OF_TWO(tmp, DIST_PRECISION_BITS);
      comp_pred[j] = (uint16_t)tmp;
    }
    comp_pred += width;
    pred += width;
    ref += ref_stride;
  }
}
#endif  // CONFIG_AV1_HIGHBITDEPTH

void aom_comp_mask_pred_c(uint8_t *comp_pred, const uint8_t *pred, int width,
                          int height, const uint8_t *ref, int ref_stride,
                          const uint8_t *mask, int mask_stride,
                          int invert_mask) { … }

#define MASK_SUBPIX_VAR(W, H) …

MASK_SUBPIX_VAR(4, 4)
MASK_SUBPIX_VAR(4, 8)
MASK_SUBPIX_VAR(8, 4)
MASK_SUBPIX_VAR(8, 8)
MASK_SUBPIX_VAR(8, 16)
MASK_SUBPIX_VAR(16, 8)
MASK_SUBPIX_VAR(16, 16)
MASK_SUBPIX_VAR(16, 32)
MASK_SUBPIX_VAR(32, 16)
MASK_SUBPIX_VAR(32, 32)
MASK_SUBPIX_VAR(32, 64)
MASK_SUBPIX_VAR(64, 32)
MASK_SUBPIX_VAR(64, 64)
MASK_SUBPIX_VAR(64, 128)
MASK_SUBPIX_VAR(128, 64)
MASK_SUBPIX_VAR(128, 128)

// Realtime mode doesn't use 4x rectangular blocks.
#if !CONFIG_REALTIME_ONLY
MASK_SUBPIX_VAR(4, 16)
MASK_SUBPIX_VAR(16, 4)
MASK_SUBPIX_VAR(8, 32)
MASK_SUBPIX_VAR(32, 8)
MASK_SUBPIX_VAR(16, 64)
MASK_SUBPIX_VAR(64, 16)
#endif

#if CONFIG_AV1_HIGHBITDEPTH
void aom_highbd_comp_mask_pred_c(uint8_t *comp_pred8, const uint8_t *pred8,
                                 int width, int height, const uint8_t *ref8,
                                 int ref_stride, const uint8_t *mask,
                                 int mask_stride, int invert_mask) {
  int i, j;
  uint16_t *pred = CONVERT_TO_SHORTPTR(pred8);
  uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
  uint16_t *comp_pred = CONVERT_TO_SHORTPTR(comp_pred8);
  for (i = 0; i < height; ++i) {
    for (j = 0; j < width; ++j) {
      if (!invert_mask)
        comp_pred[j] = AOM_BLEND_A64(mask[j], ref[j], pred[j]);
      else
        comp_pred[j] = AOM_BLEND_A64(mask[j], pred[j], ref[j]);
    }
    comp_pred += width;
    pred += width;
    ref += ref_stride;
    mask += mask_stride;
  }
}

#define HIGHBD_MASK_SUBPIX_VAR …

HIGHBD_MASK_SUBPIX_VAR(4, 4)
HIGHBD_MASK_SUBPIX_VAR(4, 8)
HIGHBD_MASK_SUBPIX_VAR(8, 4)
HIGHBD_MASK_SUBPIX_VAR(8, 8)
HIGHBD_MASK_SUBPIX_VAR(8, 16)
HIGHBD_MASK_SUBPIX_VAR(16, 8)
HIGHBD_MASK_SUBPIX_VAR(16, 16)
HIGHBD_MASK_SUBPIX_VAR(16, 32)
HIGHBD_MASK_SUBPIX_VAR(32, 16)
HIGHBD_MASK_SUBPIX_VAR(32, 32)
HIGHBD_MASK_SUBPIX_VAR(32, 64)
HIGHBD_MASK_SUBPIX_VAR(64, 32)
HIGHBD_MASK_SUBPIX_VAR(64, 64)
HIGHBD_MASK_SUBPIX_VAR(64, 128)
HIGHBD_MASK_SUBPIX_VAR(128, 64)
HIGHBD_MASK_SUBPIX_VAR(128, 128)
#if !CONFIG_REALTIME_ONLY
HIGHBD_MASK_SUBPIX_VAR(4, 16)
HIGHBD_MASK_SUBPIX_VAR(16, 4)
HIGHBD_MASK_SUBPIX_VAR(8, 32)
HIGHBD_MASK_SUBPIX_VAR(32, 8)
HIGHBD_MASK_SUBPIX_VAR(16, 64)
HIGHBD_MASK_SUBPIX_VAR(64, 16)
#endif
#endif  // CONFIG_AV1_HIGHBITDEPTH

#if !CONFIG_REALTIME_ONLY
static inline void obmc_variance(const uint8_t *pre, int pre_stride,
                                 const int32_t *wsrc, const int32_t *mask,
                                 int w, int h, unsigned int *sse, int *sum) {
  int i, j;

  *sse = 0;
  *sum = 0;

  for (i = 0; i < h; i++) {
    for (j = 0; j < w; j++) {
      int diff = ROUND_POWER_OF_TWO_SIGNED(wsrc[j] - pre[j] * mask[j], 12);
      *sum += diff;
      *sse += diff * diff;
    }

    pre += pre_stride;
    wsrc += w;
    mask += w;
  }
}

#define OBMC_VAR …

#define OBMC_SUBPIX_VAR …

OBMC_VAR(4, 4)
OBMC_SUBPIX_VAR(4, 4)

OBMC_VAR(4, 8)
OBMC_SUBPIX_VAR(4, 8)

OBMC_VAR(8, 4)
OBMC_SUBPIX_VAR(8, 4)

OBMC_VAR(8, 8)
OBMC_SUBPIX_VAR(8, 8)

OBMC_VAR(8, 16)
OBMC_SUBPIX_VAR(8, 16)

OBMC_VAR(16, 8)
OBMC_SUBPIX_VAR(16, 8)

OBMC_VAR(16, 16)
OBMC_SUBPIX_VAR(16, 16)

OBMC_VAR(16, 32)
OBMC_SUBPIX_VAR(16, 32)

OBMC_VAR(32, 16)
OBMC_SUBPIX_VAR(32, 16)

OBMC_VAR(32, 32)
OBMC_SUBPIX_VAR(32, 32)

OBMC_VAR(32, 64)
OBMC_SUBPIX_VAR(32, 64)

OBMC_VAR(64, 32)
OBMC_SUBPIX_VAR(64, 32)

OBMC_VAR(64, 64)
OBMC_SUBPIX_VAR(64, 64)

OBMC_VAR(64, 128)
OBMC_SUBPIX_VAR(64, 128)

OBMC_VAR(128, 64)
OBMC_SUBPIX_VAR(128, 64)

OBMC_VAR(128, 128)
OBMC_SUBPIX_VAR(128, 128)

OBMC_VAR(4, 16)
OBMC_SUBPIX_VAR(4, 16)
OBMC_VAR(16, 4)
OBMC_SUBPIX_VAR(16, 4)
OBMC_VAR(8, 32)
OBMC_SUBPIX_VAR(8, 32)
OBMC_VAR(32, 8)
OBMC_SUBPIX_VAR(32, 8)
OBMC_VAR(16, 64)
OBMC_SUBPIX_VAR(16, 64)
OBMC_VAR(64, 16)
OBMC_SUBPIX_VAR(64, 16)

#if CONFIG_AV1_HIGHBITDEPTH
static inline void highbd_obmc_variance64(const uint8_t *pre8, int pre_stride,
                                          const int32_t *wsrc,
                                          const int32_t *mask, int w, int h,
                                          uint64_t *sse, int64_t *sum) {
  int i, j;
  uint16_t *pre = CONVERT_TO_SHORTPTR(pre8);

  *sse = 0;
  *sum = 0;

  for (i = 0; i < h; i++) {
    for (j = 0; j < w; j++) {
      int diff = ROUND_POWER_OF_TWO_SIGNED(wsrc[j] - pre[j] * mask[j], 12);
      *sum += diff;
      *sse += diff * diff;
    }

    pre += pre_stride;
    wsrc += w;
    mask += w;
  }
}

static inline void highbd_obmc_variance(const uint8_t *pre8, int pre_stride,
                                        const int32_t *wsrc,
                                        const int32_t *mask, int w, int h,
                                        unsigned int *sse, int *sum) {
  int64_t sum64;
  uint64_t sse64;
  highbd_obmc_variance64(pre8, pre_stride, wsrc, mask, w, h, &sse64, &sum64);
  *sum = (int)sum64;
  *sse = (unsigned int)sse64;
}

static inline void highbd_10_obmc_variance(const uint8_t *pre8, int pre_stride,
                                           const int32_t *wsrc,
                                           const int32_t *mask, int w, int h,
                                           unsigned int *sse, int *sum) {
  int64_t sum64;
  uint64_t sse64;
  highbd_obmc_variance64(pre8, pre_stride, wsrc, mask, w, h, &sse64, &sum64);
  *sum = (int)ROUND_POWER_OF_TWO(sum64, 2);
  *sse = (unsigned int)ROUND_POWER_OF_TWO(sse64, 4);
}

static inline void highbd_12_obmc_variance(const uint8_t *pre8, int pre_stride,
                                           const int32_t *wsrc,
                                           const int32_t *mask, int w, int h,
                                           unsigned int *sse, int *sum) {
  int64_t sum64;
  uint64_t sse64;
  highbd_obmc_variance64(pre8, pre_stride, wsrc, mask, w, h, &sse64, &sum64);
  *sum = (int)ROUND_POWER_OF_TWO(sum64, 4);
  *sse = (unsigned int)ROUND_POWER_OF_TWO(sse64, 8);
}

#define HIGHBD_OBMC_VAR …

#define HIGHBD_OBMC_SUBPIX_VAR …

HIGHBD_OBMC_VAR(4, 4)
HIGHBD_OBMC_SUBPIX_VAR(4, 4)

HIGHBD_OBMC_VAR(4, 8)
HIGHBD_OBMC_SUBPIX_VAR(4, 8)

HIGHBD_OBMC_VAR(8, 4)
HIGHBD_OBMC_SUBPIX_VAR(8, 4)

HIGHBD_OBMC_VAR(8, 8)
HIGHBD_OBMC_SUBPIX_VAR(8, 8)

HIGHBD_OBMC_VAR(8, 16)
HIGHBD_OBMC_SUBPIX_VAR(8, 16)

HIGHBD_OBMC_VAR(16, 8)
HIGHBD_OBMC_SUBPIX_VAR(16, 8)

HIGHBD_OBMC_VAR(16, 16)
HIGHBD_OBMC_SUBPIX_VAR(16, 16)

HIGHBD_OBMC_VAR(16, 32)
HIGHBD_OBMC_SUBPIX_VAR(16, 32)

HIGHBD_OBMC_VAR(32, 16)
HIGHBD_OBMC_SUBPIX_VAR(32, 16)

HIGHBD_OBMC_VAR(32, 32)
HIGHBD_OBMC_SUBPIX_VAR(32, 32)

HIGHBD_OBMC_VAR(32, 64)
HIGHBD_OBMC_SUBPIX_VAR(32, 64)

HIGHBD_OBMC_VAR(64, 32)
HIGHBD_OBMC_SUBPIX_VAR(64, 32)

HIGHBD_OBMC_VAR(64, 64)
HIGHBD_OBMC_SUBPIX_VAR(64, 64)

HIGHBD_OBMC_VAR(64, 128)
HIGHBD_OBMC_SUBPIX_VAR(64, 128)

HIGHBD_OBMC_VAR(128, 64)
HIGHBD_OBMC_SUBPIX_VAR(128, 64)

HIGHBD_OBMC_VAR(128, 128)
HIGHBD_OBMC_SUBPIX_VAR(128, 128)

HIGHBD_OBMC_VAR(4, 16)
HIGHBD_OBMC_SUBPIX_VAR(4, 16)
HIGHBD_OBMC_VAR(16, 4)
HIGHBD_OBMC_SUBPIX_VAR(16, 4)
HIGHBD_OBMC_VAR(8, 32)
HIGHBD_OBMC_SUBPIX_VAR(8, 32)
HIGHBD_OBMC_VAR(32, 8)
HIGHBD_OBMC_SUBPIX_VAR(32, 8)
HIGHBD_OBMC_VAR(16, 64)
HIGHBD_OBMC_SUBPIX_VAR(16, 64)
HIGHBD_OBMC_VAR(64, 16)
HIGHBD_OBMC_SUBPIX_VAR(64, 16)
#endif  // CONFIG_AV1_HIGHBITDEPTH
#endif  // !CONFIG_REALTIME_ONLY

uint64_t aom_mse_wxh_16bit_c(uint8_t *dst, int dstride, uint16_t *src,
                             int sstride, int w, int h) { … }

uint64_t aom_mse_16xh_16bit_c(uint8_t *dst, int dstride, uint16_t *src, int w,
                              int h) { … }

#if CONFIG_AV1_HIGHBITDEPTH
uint64_t aom_mse_wxh_16bit_highbd_c(uint16_t *dst, int dstride, uint16_t *src,
                                    int sstride, int w, int h) {
  uint64_t sum = 0;
  for (int i = 0; i < h; i++) {
    for (int j = 0; j < w; j++) {
      int e = dst[i * dstride + j] - src[i * sstride + j];
      sum += e * e;
    }
  }
  return sum;
}
#endif  // CONFIG_AV1_HIGHBITDEPTH