1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "vpx_mem/vpx_mem.h"
12 #include "vpx_ports/mem.h"
13
14 #include "vp9/common/vp9_common.h"
15 #include "vp9/encoder/vp9_extend.h"
16
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)17 static void copy_and_extend_plane(const uint8_t *src, int src_pitch,
18 uint8_t *dst, int dst_pitch,
19 int w, int h,
20 int extend_top, int extend_left,
21 int extend_bottom, int extend_right) {
22 int i, linesize;
23
24 // copy the left and right most columns out
25 const uint8_t *src_ptr1 = src;
26 const uint8_t *src_ptr2 = src + w - 1;
27 uint8_t *dst_ptr1 = dst - extend_left;
28 uint8_t *dst_ptr2 = dst + w;
29
30 for (i = 0; i < h; i++) {
31 memset(dst_ptr1, src_ptr1[0], extend_left);
32 memcpy(dst_ptr1 + extend_left, src_ptr1, w);
33 memset(dst_ptr2, src_ptr2[0], extend_right);
34 src_ptr1 += src_pitch;
35 src_ptr2 += src_pitch;
36 dst_ptr1 += dst_pitch;
37 dst_ptr2 += dst_pitch;
38 }
39
40 // Now copy the top and bottom lines into each line of the respective
41 // borders
42 src_ptr1 = dst - extend_left;
43 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
44 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
45 dst_ptr2 = dst + dst_pitch * (h) - extend_left;
46 linesize = extend_left + extend_right + w;
47
48 for (i = 0; i < extend_top; i++) {
49 memcpy(dst_ptr1, src_ptr1, linesize);
50 dst_ptr1 += dst_pitch;
51 }
52
53 for (i = 0; i < extend_bottom; i++) {
54 memcpy(dst_ptr2, src_ptr2, linesize);
55 dst_ptr2 += dst_pitch;
56 }
57 }
58
59 #if CONFIG_VP9_HIGHBITDEPTH
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,
62 int w, int h,
63 int extend_top, int extend_left,
64 int extend_bottom, int extend_right) {
65 int i, linesize;
66 uint16_t *src = CONVERT_TO_SHORTPTR(src8);
67 uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
68
69 // copy the left and right most columns out
70 const uint16_t *src_ptr1 = src;
71 const uint16_t *src_ptr2 = src + w - 1;
72 uint16_t *dst_ptr1 = dst - extend_left;
73 uint16_t *dst_ptr2 = dst + w;
74
75 for (i = 0; i < h; i++) {
76 vpx_memset16(dst_ptr1, src_ptr1[0], extend_left);
77 memcpy(dst_ptr1 + extend_left, src_ptr1, w * sizeof(src_ptr1[0]));
78 vpx_memset16(dst_ptr2, src_ptr2[0], extend_right);
79 src_ptr1 += src_pitch;
80 src_ptr2 += src_pitch;
81 dst_ptr1 += dst_pitch;
82 dst_ptr2 += dst_pitch;
83 }
84
85 // Now copy the top and bottom lines into each line of the respective
86 // borders
87 src_ptr1 = dst - extend_left;
88 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
89 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
90 dst_ptr2 = dst + dst_pitch * (h) - extend_left;
91 linesize = extend_left + extend_right + w;
92
93 for (i = 0; i < extend_top; i++) {
94 memcpy(dst_ptr1, src_ptr1, linesize * sizeof(src_ptr1[0]));
95 dst_ptr1 += dst_pitch;
96 }
97
98 for (i = 0; i < extend_bottom; i++) {
99 memcpy(dst_ptr2, src_ptr2, linesize * sizeof(src_ptr2[0]));
100 dst_ptr2 += dst_pitch;
101 }
102 }
103 #endif // CONFIG_VP9_HIGHBITDEPTH
104
vp9_copy_and_extend_frame(const YV12_BUFFER_CONFIG * src,YV12_BUFFER_CONFIG * dst)105 void vp9_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
106 YV12_BUFFER_CONFIG *dst) {
107 // Extend src frame in buffer
108 // Altref filtering assumes 16 pixel extension
109 const int et_y = 16;
110 const int el_y = 16;
111 // Motion estimation may use src block variance with the block size up
112 // to 64x64, so the right and bottom need to be extended to 64 multiple
113 // or up to 16, whichever is greater.
114 const int er_y = MAX(src->y_width + 16, ALIGN_POWER_OF_TWO(src->y_width, 6))
115 - src->y_crop_width;
116 const int eb_y = MAX(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 CONFIG_VP9_HIGHBITDEPTH
126 if (src->flags & YV12_FLAG_HIGHBITDEPTH) {
127 highbd_copy_and_extend_plane(src->y_buffer, src->y_stride,
128 dst->y_buffer, dst->y_stride,
129 src->y_crop_width, src->y_crop_height,
130 et_y, el_y, eb_y, er_y);
131
132 highbd_copy_and_extend_plane(src->u_buffer, src->uv_stride,
133 dst->u_buffer, dst->uv_stride,
134 src->uv_crop_width, src->uv_crop_height,
135 et_uv, el_uv, eb_uv, er_uv);
136
137 highbd_copy_and_extend_plane(src->v_buffer, src->uv_stride,
138 dst->v_buffer, dst->uv_stride,
139 src->uv_crop_width, src->uv_crop_height,
140 et_uv, el_uv, eb_uv, er_uv);
141 return;
142 }
143 #endif // CONFIG_VP9_HIGHBITDEPTH
144
145 copy_and_extend_plane(src->y_buffer, src->y_stride,
146 dst->y_buffer, dst->y_stride,
147 src->y_crop_width, src->y_crop_height,
148 et_y, el_y, eb_y, er_y);
149
150 copy_and_extend_plane(src->u_buffer, src->uv_stride,
151 dst->u_buffer, dst->uv_stride,
152 src->uv_crop_width, src->uv_crop_height,
153 et_uv, el_uv, eb_uv, er_uv);
154
155 copy_and_extend_plane(src->v_buffer, src->uv_stride,
156 dst->v_buffer, dst->uv_stride,
157 src->uv_crop_width, src->uv_crop_height,
158 et_uv, el_uv, eb_uv, er_uv);
159 }
160
vp9_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG * src,YV12_BUFFER_CONFIG * dst,int srcy,int srcx,int srch,int srcw)161 void vp9_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG *src,
162 YV12_BUFFER_CONFIG *dst,
163 int srcy, int srcx,
164 int srch, int srcw) {
165 // If the side is not touching the bounder then don't extend.
166 const int et_y = srcy ? 0 : dst->border;
167 const int el_y = srcx ? 0 : dst->border;
168 const int eb_y = srcy + srch != src->y_height ? 0 :
169 dst->border + dst->y_height - src->y_height;
170 const int er_y = srcx + srcw != src->y_width ? 0 :
171 dst->border + dst->y_width - src->y_width;
172 const int src_y_offset = srcy * src->y_stride + srcx;
173 const int dst_y_offset = srcy * dst->y_stride + srcx;
174
175 const int et_uv = ROUND_POWER_OF_TWO(et_y, 1);
176 const int el_uv = ROUND_POWER_OF_TWO(el_y, 1);
177 const int eb_uv = ROUND_POWER_OF_TWO(eb_y, 1);
178 const int er_uv = ROUND_POWER_OF_TWO(er_y, 1);
179 const int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1);
180 const int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1);
181 const int srch_uv = ROUND_POWER_OF_TWO(srch, 1);
182 const int srcw_uv = ROUND_POWER_OF_TWO(srcw, 1);
183
184 copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride,
185 dst->y_buffer + dst_y_offset, dst->y_stride,
186 srcw, srch,
187 et_y, el_y, eb_y, er_y);
188
189 copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride,
190 dst->u_buffer + dst_uv_offset, dst->uv_stride,
191 srcw_uv, srch_uv,
192 et_uv, el_uv, eb_uv, er_uv);
193
194 copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride,
195 dst->v_buffer + dst_uv_offset, dst->uv_stride,
196 srcw_uv, srch_uv,
197 et_uv, el_uv, eb_uv, er_uv);
198 }
199