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1 /*
2  * Copyright (c) 2016, Alliance for Open Media. All rights reserved
3  *
4  * This source code is subject to the terms of the BSD 2 Clause License and
5  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6  * was not distributed with this source code in the LICENSE file, you can
7  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8  * Media Patent License 1.0 was not distributed with this source code in the
9  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10  */
11 
12 #ifndef AOM_AV1_COMMON_WARPED_MOTION_H_
13 #define AOM_AV1_COMMON_WARPED_MOTION_H_
14 
15 #include <stdio.h>
16 #include <stdlib.h>
17 #include <memory.h>
18 #include <math.h>
19 #include <assert.h>
20 
21 #include "config/aom_config.h"
22 
23 #include "aom_ports/mem.h"
24 #include "aom_dsp/aom_dsp_common.h"
25 #include "av1/common/mv.h"
26 #include "av1/common/convolve.h"
27 
28 #define MAX_PARAMDIM 9
29 #define LEAST_SQUARES_SAMPLES_MAX_BITS 3
30 #define LEAST_SQUARES_SAMPLES_MAX (1 << LEAST_SQUARES_SAMPLES_MAX_BITS)
31 #define SAMPLES_ARRAY_SIZE (LEAST_SQUARES_SAMPLES_MAX * 2)
32 #define WARPED_MOTION_DEBUG 0
33 #define DEFAULT_WMTYPE AFFINE
34 
35 extern const int16_t warped_filter[WARPEDPIXEL_PREC_SHIFTS * 3 + 1][8];
36 
37 static const uint8_t warp_pad_left[14][16] = {
38   { 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
39   { 2, 2, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
40   { 3, 3, 3, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
41   { 4, 4, 4, 4, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
42   { 5, 5, 5, 5, 5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
43   { 6, 6, 6, 6, 6, 6, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
44   { 7, 7, 7, 7, 7, 7, 7, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
45   { 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 10, 11, 12, 13, 14, 15 },
46   { 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 11, 12, 13, 14, 15 },
47   { 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 12, 13, 14, 15 },
48   { 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 13, 14, 15 },
49   { 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 14, 15 },
50   { 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 15 },
51   { 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15 },
52 };
53 
54 static const uint8_t warp_pad_right[14][16] = {
55   { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 14 },
56   { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 13, 13 },
57   { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 12, 12, 12 },
58   { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11, 11, 11, 11 },
59   { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 10, 10, 10, 10 },
60   { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 9, 9, 9, 9, 9 },
61   { 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 8, 8, 8, 8, 8, 8 },
62   { 0, 1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7 },
63   { 0, 1, 2, 3, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6 },
64   { 0, 1, 2, 3, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 },
65   { 0, 1, 2, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 },
66   { 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 },
67   { 0, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
68   { 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
69 };
70 
71 // Returns the error between the result of applying motion 'wm' to the frame
72 // described by 'ref' and the frame described by 'dst'.
73 int64_t av1_warp_error(WarpedMotionParams *wm, int use_hbd, int bd,
74                        const uint8_t *ref, int width, int height, int stride,
75                        uint8_t *dst, int p_col, int p_row, int p_width,
76                        int p_height, int p_stride, int subsampling_x,
77                        int subsampling_y, int64_t best_error);
78 
79 // Returns the error between the frame described by 'ref' and the frame
80 // described by 'dst'.
81 int64_t av1_frame_error(int use_hbd, int bd, const uint8_t *ref, int stride,
82                         uint8_t *dst, int p_width, int p_height, int p_stride);
83 
84 void av1_warp_plane(WarpedMotionParams *wm, int use_hbd, int bd,
85                     const uint8_t *ref, int width, int height, int stride,
86                     uint8_t *pred, int p_col, int p_row, int p_width,
87                     int p_height, int p_stride, int subsampling_x,
88                     int subsampling_y, ConvolveParams *conv_params);
89 
90 int find_projection(int np, int *pts1, int *pts2, BLOCK_SIZE bsize, int mvy,
91                     int mvx, WarpedMotionParams *wm_params, int mi_row,
92                     int mi_col);
93 
94 int get_shear_params(WarpedMotionParams *wm);
95 #endif  // AOM_AV1_COMMON_WARPED_MOTION_H_
96