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_dsp/vpx_dsp_common.h"
12 #include "vpx_mem/vpx_mem.h"
13 #include "vpx_ports/mem.h"
14
15 #include "vp9/common/vp9_common.h"
16 #include "vp9/encoder/vp9_extend.h"
17
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)18 static void copy_and_extend_plane(const uint8_t *src, int src_pitch,
19 uint8_t *dst, int dst_pitch,
20 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
60 #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)61 static void highbd_copy_and_extend_plane(const uint8_t *src8, int src_pitch,
62 uint8_t *dst8, int dst_pitch,
63 int w, int h,
64 int extend_top, int extend_left,
65 int extend_bottom, int extend_right) {
66 int i, linesize;
67 uint16_t *src = CONVERT_TO_SHORTPTR(src8);
68 uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
69
70 // copy the left and right most columns out
71 const uint16_t *src_ptr1 = src;
72 const uint16_t *src_ptr2 = src + w - 1;
73 uint16_t *dst_ptr1 = dst - extend_left;
74 uint16_t *dst_ptr2 = dst + w;
75
76 for (i = 0; i < h; i++) {
77 vpx_memset16(dst_ptr1, src_ptr1[0], extend_left);
78 memcpy(dst_ptr1 + extend_left, src_ptr1, w * sizeof(src_ptr1[0]));
79 vpx_memset16(dst_ptr2, src_ptr2[0], extend_right);
80 src_ptr1 += src_pitch;
81 src_ptr2 += src_pitch;
82 dst_ptr1 += dst_pitch;
83 dst_ptr2 += dst_pitch;
84 }
85
86 // Now copy the top and bottom lines into each line of the respective
87 // borders
88 src_ptr1 = dst - extend_left;
89 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
90 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
91 dst_ptr2 = dst + dst_pitch * (h) - extend_left;
92 linesize = extend_left + extend_right + w;
93
94 for (i = 0; i < extend_top; i++) {
95 memcpy(dst_ptr1, src_ptr1, linesize * sizeof(src_ptr1[0]));
96 dst_ptr1 += dst_pitch;
97 }
98
99 for (i = 0; i < extend_bottom; i++) {
100 memcpy(dst_ptr2, src_ptr2, linesize * sizeof(src_ptr2[0]));
101 dst_ptr2 += dst_pitch;
102 }
103 }
104 #endif // CONFIG_VP9_HIGHBITDEPTH
105
vp9_copy_and_extend_frame(const YV12_BUFFER_CONFIG * src,YV12_BUFFER_CONFIG * dst)106 void vp9_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
107 YV12_BUFFER_CONFIG *dst) {
108 // Extend src frame in buffer
109 // Altref filtering assumes 16 pixel extension
110 const int et_y = 16;
111 const int el_y = 16;
112 // Motion estimation may use src block variance with the block size up
113 // to 64x64, so the right and bottom need to be extended to 64 multiple
114 // or up to 16, whichever is greater.
115 const int er_y =
116 VPXMAX(src->y_width + 16, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
117 src->y_crop_width;
118 const int eb_y =
119 VPXMAX(src->y_height + 16, ALIGN_POWER_OF_TWO(src->y_height, 6)) -
120 src->y_crop_height;
121 const int uv_width_subsampling = (src->uv_width != src->y_width);
122 const int uv_height_subsampling = (src->uv_height != src->y_height);
123 const int et_uv = et_y >> uv_height_subsampling;
124 const int el_uv = el_y >> uv_width_subsampling;
125 const int eb_uv = eb_y >> uv_height_subsampling;
126 const int er_uv = er_y >> uv_width_subsampling;
127
128 #if CONFIG_VP9_HIGHBITDEPTH
129 if (src->flags & YV12_FLAG_HIGHBITDEPTH) {
130 highbd_copy_and_extend_plane(src->y_buffer, src->y_stride,
131 dst->y_buffer, dst->y_stride,
132 src->y_crop_width, src->y_crop_height,
133 et_y, el_y, eb_y, er_y);
134
135 highbd_copy_and_extend_plane(src->u_buffer, src->uv_stride,
136 dst->u_buffer, dst->uv_stride,
137 src->uv_crop_width, src->uv_crop_height,
138 et_uv, el_uv, eb_uv, er_uv);
139
140 highbd_copy_and_extend_plane(src->v_buffer, src->uv_stride,
141 dst->v_buffer, dst->uv_stride,
142 src->uv_crop_width, src->uv_crop_height,
143 et_uv, el_uv, eb_uv, er_uv);
144 return;
145 }
146 #endif // CONFIG_VP9_HIGHBITDEPTH
147
148 copy_and_extend_plane(src->y_buffer, src->y_stride,
149 dst->y_buffer, dst->y_stride,
150 src->y_crop_width, src->y_crop_height,
151 et_y, el_y, eb_y, er_y);
152
153 copy_and_extend_plane(src->u_buffer, src->uv_stride,
154 dst->u_buffer, dst->uv_stride,
155 src->uv_crop_width, src->uv_crop_height,
156 et_uv, el_uv, eb_uv, er_uv);
157
158 copy_and_extend_plane(src->v_buffer, src->uv_stride,
159 dst->v_buffer, dst->uv_stride,
160 src->uv_crop_width, src->uv_crop_height,
161 et_uv, el_uv, eb_uv, er_uv);
162 }
163
vp9_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG * src,YV12_BUFFER_CONFIG * dst,int srcy,int srcx,int srch,int srcw)164 void vp9_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG *src,
165 YV12_BUFFER_CONFIG *dst,
166 int srcy, int srcx,
167 int srch, int srcw) {
168 // If the side is not touching the bounder then don't extend.
169 const int et_y = srcy ? 0 : dst->border;
170 const int el_y = srcx ? 0 : dst->border;
171 const int eb_y = srcy + srch != src->y_height ? 0 :
172 dst->border + dst->y_height - src->y_height;
173 const int er_y = srcx + srcw != src->y_width ? 0 :
174 dst->border + dst->y_width - src->y_width;
175 const int src_y_offset = srcy * src->y_stride + srcx;
176 const int dst_y_offset = srcy * dst->y_stride + srcx;
177
178 const int et_uv = ROUND_POWER_OF_TWO(et_y, 1);
179 const int el_uv = ROUND_POWER_OF_TWO(el_y, 1);
180 const int eb_uv = ROUND_POWER_OF_TWO(eb_y, 1);
181 const int er_uv = ROUND_POWER_OF_TWO(er_y, 1);
182 const int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1);
183 const int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1);
184 const int srch_uv = ROUND_POWER_OF_TWO(srch, 1);
185 const int srcw_uv = ROUND_POWER_OF_TWO(srcw, 1);
186
187 copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride,
188 dst->y_buffer + dst_y_offset, dst->y_stride,
189 srcw, srch,
190 et_y, el_y, eb_y, er_y);
191
192 copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride,
193 dst->u_buffer + dst_uv_offset, dst->uv_stride,
194 srcw_uv, srch_uv,
195 et_uv, el_uv, eb_uv, er_uv);
196
197 copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride,
198 dst->v_buffer + dst_uv_offset, dst->uv_stride,
199 srcw_uv, srch_uv,
200 et_uv, el_uv, eb_uv, er_uv);
201 }
202