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 #include "aom_dsp/aom_dsp_common.h"
13 #include "aom_mem/aom_mem.h"
14 #include "aom_ports/mem.h"
15
16 #include "av1/common/common.h"
17 #include "av1/encoder/extend.h"
18
copy_and_extend_plane(const uint8_t * src,int src_pitch,uint8_t * dst,int dst_pitch,int w,int h,int extend_top,int extend_left,int extend_bottom,int extend_right)19 static void copy_and_extend_plane(const uint8_t *src, int src_pitch,
20 uint8_t *dst, int dst_pitch, int w, int h,
21 int extend_top, int extend_left,
22 int extend_bottom, int extend_right) {
23 int i, linesize;
24
25 // copy the left and right most columns out
26 const uint8_t *src_ptr1 = src;
27 const uint8_t *src_ptr2 = src + w - 1;
28 uint8_t *dst_ptr1 = dst - extend_left;
29 uint8_t *dst_ptr2 = dst + w;
30
31 for (i = 0; i < h; i++) {
32 memset(dst_ptr1, src_ptr1[0], extend_left);
33 memcpy(dst_ptr1 + extend_left, src_ptr1, w);
34 memset(dst_ptr2, src_ptr2[0], extend_right);
35 src_ptr1 += src_pitch;
36 src_ptr2 += src_pitch;
37 dst_ptr1 += dst_pitch;
38 dst_ptr2 += dst_pitch;
39 }
40
41 // Now copy the top and bottom lines into each line of the respective
42 // borders
43 src_ptr1 = dst - extend_left;
44 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
45 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
46 dst_ptr2 = dst + dst_pitch * (h)-extend_left;
47 linesize = extend_left + extend_right + w;
48
49 for (i = 0; i < extend_top; i++) {
50 memcpy(dst_ptr1, src_ptr1, linesize);
51 dst_ptr1 += dst_pitch;
52 }
53
54 for (i = 0; i < extend_bottom; i++) {
55 memcpy(dst_ptr2, src_ptr2, linesize);
56 dst_ptr2 += dst_pitch;
57 }
58 }
59
highbd_copy_and_extend_plane(const uint8_t * src8,int src_pitch,uint8_t * dst8,int dst_pitch,int w,int h,int extend_top,int extend_left,int extend_bottom,int extend_right)60 static void highbd_copy_and_extend_plane(const uint8_t *src8, int src_pitch,
61 uint8_t *dst8, int dst_pitch, int w,
62 int h, int extend_top, int extend_left,
63 int extend_bottom, int extend_right) {
64 int i, linesize;
65 uint16_t *src = CONVERT_TO_SHORTPTR(src8);
66 uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
67
68 // copy the left and right most columns out
69 const uint16_t *src_ptr1 = src;
70 const uint16_t *src_ptr2 = src + w - 1;
71 uint16_t *dst_ptr1 = dst - extend_left;
72 uint16_t *dst_ptr2 = dst + w;
73
74 for (i = 0; i < h; i++) {
75 aom_memset16(dst_ptr1, src_ptr1[0], extend_left);
76 memcpy(dst_ptr1 + extend_left, src_ptr1, w * sizeof(src_ptr1[0]));
77 aom_memset16(dst_ptr2, src_ptr2[0], extend_right);
78 src_ptr1 += src_pitch;
79 src_ptr2 += src_pitch;
80 dst_ptr1 += dst_pitch;
81 dst_ptr2 += dst_pitch;
82 }
83
84 // Now copy the top and bottom lines into each line of the respective
85 // borders
86 src_ptr1 = dst - extend_left;
87 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
88 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
89 dst_ptr2 = dst + dst_pitch * (h)-extend_left;
90 linesize = extend_left + extend_right + w;
91
92 for (i = 0; i < extend_top; i++) {
93 memcpy(dst_ptr1, src_ptr1, linesize * sizeof(src_ptr1[0]));
94 dst_ptr1 += dst_pitch;
95 }
96
97 for (i = 0; i < extend_bottom; i++) {
98 memcpy(dst_ptr2, src_ptr2, linesize * sizeof(src_ptr2[0]));
99 dst_ptr2 += dst_pitch;
100 }
101 }
102
av1_copy_and_extend_frame(const YV12_BUFFER_CONFIG * src,YV12_BUFFER_CONFIG * dst)103 void av1_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
104 YV12_BUFFER_CONFIG *dst) {
105 // Extend src frame in buffer
106 // Altref filtering assumes 16 pixel extension
107 const int et_y = 16;
108 const int el_y = 16;
109 // Motion estimation may use src block variance with the block size up
110 // to 64x64, so the right and bottom need to be extended to 64 multiple
111 // or up to 16, whichever is greater.
112 const int er_y =
113 AOMMAX(src->y_width + 16, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
114 src->y_crop_width;
115 const int eb_y =
116 AOMMAX(src->y_height + 16, ALIGN_POWER_OF_TWO(src->y_height, 6)) -
117 src->y_crop_height;
118 const int uv_width_subsampling = (src->uv_width != src->y_width);
119 const int uv_height_subsampling = (src->uv_height != src->y_height);
120 const int et_uv = et_y >> uv_height_subsampling;
121 const int el_uv = el_y >> uv_width_subsampling;
122 const int eb_uv = eb_y >> uv_height_subsampling;
123 const int er_uv = er_y >> uv_width_subsampling;
124
125 if (src->flags & YV12_FLAG_HIGHBITDEPTH) {
126 highbd_copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer,
127 dst->y_stride, src->y_crop_width,
128 src->y_crop_height, et_y, el_y, eb_y, er_y);
129
130 highbd_copy_and_extend_plane(
131 src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride,
132 src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
133
134 highbd_copy_and_extend_plane(
135 src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride,
136 src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
137 return;
138 }
139
140 copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer,
141 dst->y_stride, src->y_crop_width, src->y_crop_height,
142 et_y, el_y, eb_y, er_y);
143
144 copy_and_extend_plane(src->u_buffer, src->uv_stride, dst->u_buffer,
145 dst->uv_stride, src->uv_crop_width, src->uv_crop_height,
146 et_uv, el_uv, eb_uv, er_uv);
147
148 copy_and_extend_plane(src->v_buffer, src->uv_stride, dst->v_buffer,
149 dst->uv_stride, src->uv_crop_width, src->uv_crop_height,
150 et_uv, el_uv, eb_uv, er_uv);
151 }
152
av1_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG * src,YV12_BUFFER_CONFIG * dst,int srcy,int srcx,int srch,int srcw)153 void av1_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG *src,
154 YV12_BUFFER_CONFIG *dst, int srcy,
155 int srcx, int srch, int srcw) {
156 // If the side is not touching the bounder then don't extend.
157 const int et_y = srcy ? 0 : dst->border;
158 const int el_y = srcx ? 0 : dst->border;
159 const int eb_y = srcy + srch != src->y_height
160 ? 0
161 : dst->border + dst->y_height - src->y_height;
162 const int er_y = srcx + srcw != src->y_width
163 ? 0
164 : dst->border + dst->y_width - src->y_width;
165 const int src_y_offset = srcy * src->y_stride + srcx;
166 const int dst_y_offset = srcy * dst->y_stride + srcx;
167
168 const int et_uv = ROUND_POWER_OF_TWO(et_y, 1);
169 const int el_uv = ROUND_POWER_OF_TWO(el_y, 1);
170 const int eb_uv = ROUND_POWER_OF_TWO(eb_y, 1);
171 const int er_uv = ROUND_POWER_OF_TWO(er_y, 1);
172 const int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1);
173 const int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1);
174 const int srch_uv = ROUND_POWER_OF_TWO(srch, 1);
175 const int srcw_uv = ROUND_POWER_OF_TWO(srcw, 1);
176
177 copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride,
178 dst->y_buffer + dst_y_offset, dst->y_stride, srcw, srch,
179 et_y, el_y, eb_y, er_y);
180
181 copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride,
182 dst->u_buffer + dst_uv_offset, dst->uv_stride, srcw_uv,
183 srch_uv, et_uv, el_uv, eb_uv, er_uv);
184
185 copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride,
186 dst->v_buffer + dst_uv_offset, dst->uv_stride, srcw_uv,
187 srch_uv, et_uv, el_uv, eb_uv, er_uv);
188 }
189