/*
 * 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.
 */

#ifndef AOM_AV1_COMMON_WARPED_MOTION_H_
#define AOM_AV1_COMMON_WARPED_MOTION_H_

#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include <math.h>
#include <assert.h>

#include "config/aom_config.h"

#include "aom_ports/mem.h"
#include "aom_dsp/aom_dsp_common.h"
#include "av1/common/mv.h"
#include "av1/common/convolve.h"

#define MAX_PARAMDIM 9
#define LEAST_SQUARES_SAMPLES_MAX_BITS 3
#define LEAST_SQUARES_SAMPLES_MAX (1 << LEAST_SQUARES_SAMPLES_MAX_BITS)
#define SAMPLES_ARRAY_SIZE (LEAST_SQUARES_SAMPLES_MAX * 2)
#define WARPED_MOTION_DEBUG 0
#define DEFAULT_WMTYPE AFFINE
#define WARP_ERROR_BLOCK_LOG 5
#define WARP_ERROR_BLOCK (1 << WARP_ERROR_BLOCK_LOG)

extern const int16_t av1_warped_filter[WARPEDPIXEL_PREC_SHIFTS * 3 + 1][8];

DECLARE_ALIGNED(8, extern const int8_t,
                av1_filter_8bit[WARPEDPIXEL_PREC_SHIFTS * 3 + 1][8]);

#if CONFIG_EXT_WARP
extern const int16_t av1_ext_warped_filter[WARPEDPIXEL_PREC_SHIFTS + 1][8];

DECLARE_ALIGNED(16, extern const int16_t,
                av1_ext_filter_16bit[WARPEDPIXEL_PREC_SHIFTS + 1][8]);
#endif  // CONFIG_EXT_WARP

/* clang-format off */
static const int error_measure_lut[512] = {
    // pow 0.7
    16384, 16339, 16294, 16249, 16204, 16158, 16113, 16068,
    16022, 15977, 15932, 15886, 15840, 15795, 15749, 15703,
    15657, 15612, 15566, 15520, 15474, 15427, 15381, 15335,
    15289, 15242, 15196, 15149, 15103, 15056, 15010, 14963,
    14916, 14869, 14822, 14775, 14728, 14681, 14634, 14587,
    14539, 14492, 14445, 14397, 14350, 14302, 14254, 14206,
    14159, 14111, 14063, 14015, 13967, 13918, 13870, 13822,
    13773, 13725, 13676, 13628, 13579, 13530, 13481, 13432,
    13383, 13334, 13285, 13236, 13187, 13137, 13088, 13038,
    12988, 12939, 12889, 12839, 12789, 12739, 12689, 12639,
    12588, 12538, 12487, 12437, 12386, 12335, 12285, 12234,
    12183, 12132, 12080, 12029, 11978, 11926, 11875, 11823,
    11771, 11719, 11667, 11615, 11563, 11511, 11458, 11406,
    11353, 11301, 11248, 11195, 11142, 11089, 11036, 10982,
    10929, 10875, 10822, 10768, 10714, 10660, 10606, 10552,
    10497, 10443, 10388, 10333, 10279, 10224, 10168, 10113,
    10058, 10002,  9947,  9891,  9835,  9779,  9723,  9666,
    9610, 9553, 9497, 9440, 9383, 9326, 9268, 9211,
    9153, 9095, 9037, 8979, 8921, 8862, 8804, 8745,
    8686, 8627, 8568, 8508, 8449, 8389, 8329, 8269,
    8208, 8148, 8087, 8026, 7965, 7903, 7842, 7780,
    7718, 7656, 7593, 7531, 7468, 7405, 7341, 7278,
    7214, 7150, 7086, 7021, 6956, 6891, 6826, 6760,
    6695, 6628, 6562, 6495, 6428, 6361, 6293, 6225,
    6157, 6089, 6020, 5950, 5881, 5811, 5741, 5670,
    5599, 5527, 5456, 5383, 5311, 5237, 5164, 5090,
    5015, 4941, 4865, 4789, 4713, 4636, 4558, 4480,
    4401, 4322, 4242, 4162, 4080, 3998, 3916, 3832,
    3748, 3663, 3577, 3490, 3402, 3314, 3224, 3133,
    3041, 2948, 2854, 2758, 2661, 2562, 2461, 2359,
    2255, 2148, 2040, 1929, 1815, 1698, 1577, 1452,
    1323, 1187, 1045,  894,  731,  550,  339,    0,
    339,  550,  731,  894, 1045, 1187, 1323, 1452,
    1577, 1698, 1815, 1929, 2040, 2148, 2255, 2359,
    2461, 2562, 2661, 2758, 2854, 2948, 3041, 3133,
    3224, 3314, 3402, 3490, 3577, 3663, 3748, 3832,
    3916, 3998, 4080, 4162, 4242, 4322, 4401, 4480,
    4558, 4636, 4713, 4789, 4865, 4941, 5015, 5090,
    5164, 5237, 5311, 5383, 5456, 5527, 5599, 5670,
    5741, 5811, 5881, 5950, 6020, 6089, 6157, 6225,
    6293, 6361, 6428, 6495, 6562, 6628, 6695, 6760,
    6826, 6891, 6956, 7021, 7086, 7150, 7214, 7278,
    7341, 7405, 7468, 7531, 7593, 7656, 7718, 7780,
    7842, 7903, 7965, 8026, 8087, 8148, 8208, 8269,
    8329, 8389, 8449, 8508, 8568, 8627, 8686, 8745,
    8804, 8862, 8921, 8979, 9037, 9095, 9153, 9211,
    9268, 9326, 9383, 9440, 9497, 9553, 9610, 9666,
    9723,  9779,  9835,  9891,  9947, 10002, 10058, 10113,
    10168, 10224, 10279, 10333, 10388, 10443, 10497, 10552,
    10606, 10660, 10714, 10768, 10822, 10875, 10929, 10982,
    11036, 11089, 11142, 11195, 11248, 11301, 11353, 11406,
    11458, 11511, 11563, 11615, 11667, 11719, 11771, 11823,
    11875, 11926, 11978, 12029, 12080, 12132, 12183, 12234,
    12285, 12335, 12386, 12437, 12487, 12538, 12588, 12639,
    12689, 12739, 12789, 12839, 12889, 12939, 12988, 13038,
    13088, 13137, 13187, 13236, 13285, 13334, 13383, 13432,
    13481, 13530, 13579, 13628, 13676, 13725, 13773, 13822,
    13870, 13918, 13967, 14015, 14063, 14111, 14159, 14206,
    14254, 14302, 14350, 14397, 14445, 14492, 14539, 14587,
    14634, 14681, 14728, 14775, 14822, 14869, 14916, 14963,
    15010, 15056, 15103, 15149, 15196, 15242, 15289, 15335,
    15381, 15427, 15474, 15520, 15566, 15612, 15657, 15703,
    15749, 15795, 15840, 15886, 15932, 15977, 16022, 16068,
    16113, 16158, 16204, 16249, 16294, 16339, 16384, 16384,
};
/* clang-format on */

static const uint8_t warp_pad_left[14][16] = {
  { 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
  { 2, 2, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
  { 3, 3, 3, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
  { 4, 4, 4, 4, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
  { 5, 5, 5, 5, 5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
  { 6, 6, 6, 6, 6, 6, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
  { 7, 7, 7, 7, 7, 7, 7, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
  { 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 10, 11, 12, 13, 14, 15 },
  { 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 11, 12, 13, 14, 15 },
  { 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 12, 13, 14, 15 },
  { 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 13, 14, 15 },
  { 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 14, 15 },
  { 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 15 },
  { 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15 },
};

static const uint8_t warp_pad_right[14][16] = {
  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 14 },
  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 13, 13 },
  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 12, 12, 12 },
  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11, 11, 11, 11 },
  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 10, 10, 10, 10 },
  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 9, 9, 9, 9, 9 },
  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 8, 8, 8, 8, 8, 8 },
  { 0, 1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7 },
  { 0, 1, 2, 3, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6 },
  { 0, 1, 2, 3, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 },
  { 0, 1, 2, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 },
  { 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 },
  { 0, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
  { 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
};

static INLINE int error_measure(int err) {
  return error_measure_lut[255 + err];
}

// Returns the error between the result of applying motion 'wm' to the frame
// described by 'ref' and the frame described by 'dst'.
int64_t av1_warp_error(WarpedMotionParams *wm, int use_hbd, int bd,
                       const uint8_t *ref, int width, int height, int stride,
                       uint8_t *dst, int p_col, int p_row, int p_width,
                       int p_height, int p_stride, int subsampling_x,
                       int subsampling_y, int64_t best_error,
                       uint8_t *segment_map, int segment_map_stride);

// Returns the error between the frame described by 'ref' and the frame
// described by 'dst'.
int64_t av1_frame_error(int use_hbd, int bd, const uint8_t *ref, int stride,
                        uint8_t *dst, int p_width, int p_height, int p_stride);

int64_t av1_segmented_frame_error(int use_hbd, int bd, const uint8_t *ref,
                                  int stride, uint8_t *dst, int p_width,
                                  int p_height, int p_stride,
                                  uint8_t *segment_map, int segment_map_stride);

void av1_warp_plane(WarpedMotionParams *wm, int use_hbd, int bd,
                    const uint8_t *ref, int width, int height, int stride,
                    uint8_t *pred, int p_col, int p_row, int p_width,
                    int p_height, int p_stride, int subsampling_x,
                    int subsampling_y,
#if CONFIG_EXT_WARP && CONFIG_SUB8X8_WARP
                    int is_sub_8x8_block,
#endif  // CONFIG_EXT_WARP && CONFIG_SUB8X8_WARP
                    ConvolveParams *conv_params);

int av1_find_projection(int np, int *pts1, int *pts2, BLOCK_SIZE bsize, int mvy,
                        int mvx, WarpedMotionParams *wm_params, int mi_row,
                        int mi_col);

int av1_get_shear_params(WarpedMotionParams *wm);
#endif  // AOM_AV1_COMMON_WARPED_MOTION_H_