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 <assert.h>
13
14 #include "aom_dsp/aom_dsp_common.h"
15 #include "aom_mem/aom_mem.h"
16 #include "aom_ports/mem.h"
17
18 #include "av1/common/common.h"
19 #include "av1/encoder/extend.h"
20
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)21 static void copy_and_extend_plane(const uint8_t *src, int src_pitch,
22 uint8_t *dst, int dst_pitch, int w, int h,
23 int extend_top, int extend_left,
24 int extend_bottom, int extend_right) {
25 int i, linesize;
26
27 // copy the left and right most columns out
28 const uint8_t *src_ptr1 = src;
29 const uint8_t *src_ptr2 = src + w - 1;
30 uint8_t *dst_ptr1 = dst - extend_left;
31 uint8_t *dst_ptr2 = dst + w;
32
33 for (i = 0; i < h; i++) {
34 memset(dst_ptr1, src_ptr1[0], extend_left);
35 memcpy(dst_ptr1 + extend_left, src_ptr1, w);
36 memset(dst_ptr2, src_ptr2[0], extend_right);
37 src_ptr1 += src_pitch;
38 src_ptr2 += src_pitch;
39 dst_ptr1 += dst_pitch;
40 dst_ptr2 += dst_pitch;
41 }
42
43 // Now copy the top and bottom lines into each line of the respective
44 // borders
45 src_ptr1 = dst - extend_left;
46 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
47 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
48 dst_ptr2 = dst + dst_pitch * (h)-extend_left;
49 linesize = extend_left + extend_right + w;
50 assert(linesize <= dst_pitch);
51
52 for (i = 0; i < extend_top; i++) {
53 memcpy(dst_ptr1, src_ptr1, linesize);
54 dst_ptr1 += dst_pitch;
55 }
56
57 for (i = 0; i < extend_bottom; i++) {
58 memcpy(dst_ptr2, src_ptr2, linesize);
59 dst_ptr2 += dst_pitch;
60 }
61 }
62
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)63 static void highbd_copy_and_extend_plane(const uint8_t *src8, int src_pitch,
64 uint8_t *dst8, int dst_pitch, int w,
65 int h, int extend_top, int extend_left,
66 int extend_bottom, int extend_right) {
67 int i, linesize;
68 uint16_t *src = CONVERT_TO_SHORTPTR(src8);
69 uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
70
71 // copy the left and right most columns out
72 const uint16_t *src_ptr1 = src;
73 const uint16_t *src_ptr2 = src + w - 1;
74 uint16_t *dst_ptr1 = dst - extend_left;
75 uint16_t *dst_ptr2 = dst + w;
76
77 for (i = 0; i < h; i++) {
78 aom_memset16(dst_ptr1, src_ptr1[0], extend_left);
79 memcpy(dst_ptr1 + extend_left, src_ptr1, w * sizeof(src_ptr1[0]));
80 aom_memset16(dst_ptr2, src_ptr2[0], extend_right);
81 src_ptr1 += src_pitch;
82 src_ptr2 += src_pitch;
83 dst_ptr1 += dst_pitch;
84 dst_ptr2 += dst_pitch;
85 }
86
87 // Now copy the top and bottom lines into each line of the respective
88 // borders
89 src_ptr1 = dst - extend_left;
90 src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
91 dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
92 dst_ptr2 = dst + dst_pitch * (h)-extend_left;
93 linesize = extend_left + extend_right + w;
94 assert(linesize <= dst_pitch);
95
96 for (i = 0; i < extend_top; i++) {
97 memcpy(dst_ptr1, src_ptr1, linesize * sizeof(src_ptr1[0]));
98 dst_ptr1 += dst_pitch;
99 }
100
101 for (i = 0; i < extend_bottom; i++) {
102 memcpy(dst_ptr2, src_ptr2, linesize * sizeof(src_ptr2[0]));
103 dst_ptr2 += dst_pitch;
104 }
105 }
106
av1_copy_and_extend_frame(const YV12_BUFFER_CONFIG * src,YV12_BUFFER_CONFIG * dst)107 void av1_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
108 YV12_BUFFER_CONFIG *dst) {
109 // Extend src frame in buffer
110 const int et_y = dst->border;
111 const int el_y = dst->border;
112 const int er_y =
113 AOMMAX(src->y_width + dst->border, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
114 src->y_crop_width;
115 const int eb_y = AOMMAX(src->y_height + dst->border,
116 ALIGN_POWER_OF_TWO(src->y_height, 6)) -
117 src->y_crop_height;
118 const int uv_width_subsampling = src->subsampling_x;
119 const int uv_height_subsampling = src->subsampling_y;
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 if (!src->monochrome) {
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 highbd_copy_and_extend_plane(
134 src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride,
135 src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
136 }
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 if (!src->monochrome) {
144 copy_and_extend_plane(src->u_buffer, src->uv_stride, dst->u_buffer,
145 dst->uv_stride, src->uv_crop_width,
146 src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
147 copy_and_extend_plane(src->v_buffer, src->uv_stride, dst->v_buffer,
148 dst->uv_stride, src->uv_crop_width,
149 src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
150 }
151 }
152