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,int interleave_step)18 static void copy_and_extend_plane(const uint8_t *src, int src_pitch,
19 uint8_t *dst, int dst_pitch, int w, int h,
20 int extend_top, int extend_left,
21 int extend_bottom, int extend_right,
22 int interleave_step) {
23 int i, j, linesize;
24 const int step = interleave_step < 1 ? 1 : interleave_step;
25
26 // copy the left and right most columns out
27 const uint8_t *src_ptr1 = src;
28 const uint8_t *src_ptr2 = src + (w - 1) * step;
29 uint8_t *dst_ptr1 = dst - extend_left;
30 uint8_t *dst_ptr2 = dst + w;
31
32 for (i = 0; i < h; i++) {
33 memset(dst_ptr1, src_ptr1[0], extend_left);
34 if (step == 1) {
35 memcpy(dst_ptr1 + extend_left, src_ptr1, w);
36 } else {
37 for (j = 0; j < w; j++) {
38 dst_ptr1[extend_left + j] = src_ptr1[step * j];
39 }
40 }
41 memset(dst_ptr2, src_ptr2[0], extend_right);
42 src_ptr1 += src_pitch;
43 src_ptr2 += src_pitch;
44 dst_ptr1 += dst_pitch;
45 dst_ptr2 += dst_pitch;
46 }
47
48 // Now copy the top and bottom lines into each line of the respective
49 // borders
50 src_ptr1 = dst - extend_left;
51 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
52 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
53 dst_ptr2 = dst + dst_pitch * (h)-extend_left;
54 linesize = extend_left + extend_right + w;
55
56 for (i = 0; i < extend_top; i++) {
57 memcpy(dst_ptr1, src_ptr1, linesize);
58 dst_ptr1 += dst_pitch;
59 }
60
61 for (i = 0; i < extend_bottom; i++) {
62 memcpy(dst_ptr2, src_ptr2, linesize);
63 dst_ptr2 += dst_pitch;
64 }
65 }
66
67 #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)68 static void highbd_copy_and_extend_plane(const uint8_t *src8, int src_pitch,
69 uint8_t *dst8, int dst_pitch, int w,
70 int h, int extend_top, int extend_left,
71 int extend_bottom, int extend_right) {
72 int i, linesize;
73 uint16_t *src = CONVERT_TO_SHORTPTR(src8);
74 uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
75
76 // copy the left and right most columns out
77 const uint16_t *src_ptr1 = src;
78 const uint16_t *src_ptr2 = src + w - 1;
79 uint16_t *dst_ptr1 = dst - extend_left;
80 uint16_t *dst_ptr2 = dst + w;
81
82 for (i = 0; i < h; i++) {
83 vpx_memset16(dst_ptr1, src_ptr1[0], extend_left);
84 memcpy(dst_ptr1 + extend_left, src_ptr1, w * sizeof(src_ptr1[0]));
85 vpx_memset16(dst_ptr2, src_ptr2[0], extend_right);
86 src_ptr1 += src_pitch;
87 src_ptr2 += src_pitch;
88 dst_ptr1 += dst_pitch;
89 dst_ptr2 += dst_pitch;
90 }
91
92 // Now copy the top and bottom lines into each line of the respective
93 // borders
94 src_ptr1 = dst - extend_left;
95 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
96 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
97 dst_ptr2 = dst + dst_pitch * (h)-extend_left;
98 linesize = extend_left + extend_right + w;
99
100 for (i = 0; i < extend_top; i++) {
101 memcpy(dst_ptr1, src_ptr1, linesize * sizeof(src_ptr1[0]));
102 dst_ptr1 += dst_pitch;
103 }
104
105 for (i = 0; i < extend_bottom; i++) {
106 memcpy(dst_ptr2, src_ptr2, linesize * sizeof(src_ptr2[0]));
107 dst_ptr2 += dst_pitch;
108 }
109 }
110 #endif // CONFIG_VP9_HIGHBITDEPTH
111
vp9_copy_and_extend_frame(const YV12_BUFFER_CONFIG * src,YV12_BUFFER_CONFIG * dst)112 void vp9_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
113 YV12_BUFFER_CONFIG *dst) {
114 // Extend src frame in buffer
115 // Altref filtering assumes 16 pixel extension
116 const int et_y = 16;
117 const int el_y = 16;
118 // Motion estimation may use src block variance with the block size up
119 // to 64x64, so the right and bottom need to be extended to 64 multiple
120 // or up to 16, whichever is greater.
121 const int er_y =
122 VPXMAX(src->y_width + 16, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
123 src->y_crop_width;
124 const int eb_y =
125 VPXMAX(src->y_height + 16, ALIGN_POWER_OF_TWO(src->y_height, 6)) -
126 src->y_crop_height;
127 const int uv_width_subsampling = (src->uv_width != src->y_width);
128 const int uv_height_subsampling = (src->uv_height != src->y_height);
129 const int et_uv = et_y >> uv_height_subsampling;
130 const int el_uv = el_y >> uv_width_subsampling;
131 const int eb_uv = eb_y >> uv_height_subsampling;
132 const int er_uv = er_y >> uv_width_subsampling;
133 // detect nv12 colorspace
134 const int chroma_step = src->v_buffer - src->u_buffer == 1 ? 2 : 1;
135
136 #if CONFIG_VP9_HIGHBITDEPTH
137 if (src->flags & YV12_FLAG_HIGHBITDEPTH) {
138 highbd_copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer,
139 dst->y_stride, src->y_crop_width,
140 src->y_crop_height, et_y, el_y, eb_y, er_y);
141
142 highbd_copy_and_extend_plane(
143 src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride,
144 src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
145
146 highbd_copy_and_extend_plane(
147 src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride,
148 src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
149 return;
150 }
151 #endif // CONFIG_VP9_HIGHBITDEPTH
152
153 copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer,
154 dst->y_stride, src->y_crop_width, src->y_crop_height,
155 et_y, el_y, eb_y, er_y, 1);
156
157 copy_and_extend_plane(src->u_buffer, src->uv_stride, dst->u_buffer,
158 dst->uv_stride, src->uv_crop_width, src->uv_crop_height,
159 et_uv, el_uv, eb_uv, er_uv, chroma_step);
160
161 copy_and_extend_plane(src->v_buffer, src->uv_stride, dst->v_buffer,
162 dst->uv_stride, src->uv_crop_width, src->uv_crop_height,
163 et_uv, el_uv, eb_uv, er_uv, chroma_step);
164 }
165
vp9_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG * src,YV12_BUFFER_CONFIG * dst,int srcy,int srcx,int srch,int srcw)166 void vp9_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG *src,
167 YV12_BUFFER_CONFIG *dst, int srcy,
168 int srcx, int srch, int srcw) {
169 // If the side is not touching the bounder then don't extend.
170 const int et_y = srcy ? 0 : dst->border;
171 const int el_y = srcx ? 0 : dst->border;
172 const int eb_y = srcy + srch != src->y_height
173 ? 0
174 : dst->border + dst->y_height - src->y_height;
175 const int er_y = srcx + srcw != src->y_width
176 ? 0
177 : dst->border + dst->y_width - src->y_width;
178 const int src_y_offset = srcy * src->y_stride + srcx;
179 const int dst_y_offset = srcy * dst->y_stride + srcx;
180
181 const int et_uv = ROUND_POWER_OF_TWO(et_y, 1);
182 const int el_uv = ROUND_POWER_OF_TWO(el_y, 1);
183 const int eb_uv = ROUND_POWER_OF_TWO(eb_y, 1);
184 const int er_uv = ROUND_POWER_OF_TWO(er_y, 1);
185 const int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1);
186 const int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1);
187 const int srch_uv = ROUND_POWER_OF_TWO(srch, 1);
188 const int srcw_uv = ROUND_POWER_OF_TWO(srcw, 1);
189 // detect nv12 colorspace
190 const int chroma_step = src->v_buffer - src->u_buffer == 1 ? 2 : 1;
191
192 copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride,
193 dst->y_buffer + dst_y_offset, dst->y_stride, srcw, srch,
194 et_y, el_y, eb_y, er_y, 1);
195
196 copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride,
197 dst->u_buffer + dst_uv_offset, dst->uv_stride, srcw_uv,
198 srch_uv, et_uv, el_uv, eb_uv, er_uv, chroma_step);
199
200 copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride,
201 dst->v_buffer + dst_uv_offset, dst->uv_stride, srcw_uv,
202 srch_uv, et_uv, el_uv, eb_uv, er_uv, chroma_step);
203 }
204