2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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.
12 #include "./vpx_config.h"
13 #include "vpx/vpx_integer.h"
14 #include "vpx_mem/vpx_mem.h"
15 #include "vpx_scale/yv12config.h"
17 static void extend_plane(uint8_t *const src, int src_stride,
18 int width, int height,
19 int extend_top, int extend_left,
20 int extend_bottom, int extend_right) {
22 const int linesize = extend_left + extend_right + width;
24 /* copy the left and right most columns out */
25 uint8_t *src_ptr1 = src;
26 uint8_t *src_ptr2 = src + width - 1;
27 uint8_t *dst_ptr1 = src - extend_left;
28 uint8_t *dst_ptr2 = src + width;
30 for (i = 0; i < height; ++i) {
31 vpx_memset(dst_ptr1, src_ptr1[0], extend_left);
32 vpx_memset(dst_ptr2, src_ptr2[0], extend_right);
33 src_ptr1 += src_stride;
34 src_ptr2 += src_stride;
35 dst_ptr1 += src_stride;
36 dst_ptr2 += src_stride;
39 /* Now copy the top and bottom lines into each line of the respective
42 src_ptr1 = src - extend_left;
43 src_ptr2 = src + src_stride * (height - 1) - extend_left;
44 dst_ptr1 = src + src_stride * -extend_top - extend_left;
45 dst_ptr2 = src + src_stride * height - extend_left;
47 for (i = 0; i < extend_top; ++i) {
48 vpx_memcpy(dst_ptr1, src_ptr1, linesize);
49 dst_ptr1 += src_stride;
52 for (i = 0; i < extend_bottom; ++i) {
53 vpx_memcpy(dst_ptr2, src_ptr2, linesize);
54 dst_ptr2 += src_stride;
58 void vp8_yv12_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf) {
59 const int uv_border = ybf->border / 2;
61 assert(ybf->border % 2 == 0);
62 assert(ybf->y_height - ybf->y_crop_height < 16);
63 assert(ybf->y_width - ybf->y_crop_width < 16);
64 assert(ybf->y_height - ybf->y_crop_height >= 0);
65 assert(ybf->y_width - ybf->y_crop_width >= 0);
67 extend_plane(ybf->y_buffer, ybf->y_stride,
68 ybf->y_crop_width, ybf->y_crop_height,
69 ybf->border, ybf->border,
70 ybf->border + ybf->y_height - ybf->y_crop_height,
71 ybf->border + ybf->y_width - ybf->y_crop_width);
73 extend_plane(ybf->u_buffer, ybf->uv_stride,
74 ybf->uv_crop_width, ybf->uv_crop_height,
76 uv_border + ybf->uv_height - ybf->uv_crop_height,
77 uv_border + ybf->uv_width - ybf->uv_crop_width);
79 extend_plane(ybf->v_buffer, ybf->uv_stride,
80 ybf->uv_crop_width, ybf->uv_crop_height,
82 uv_border + ybf->uv_height - ybf->uv_crop_height,
83 uv_border + ybf->uv_width - ybf->uv_crop_width);
87 static void extend_frame(YV12_BUFFER_CONFIG *const ybf, int ext_size) {
88 const int c_w = ybf->uv_crop_width;
89 const int c_h = ybf->uv_crop_height;
90 const int ss_x = ybf->uv_width < ybf->y_width;
91 const int ss_y = ybf->uv_height < ybf->y_height;
92 const int c_et = ext_size >> ss_y;
93 const int c_el = ext_size >> ss_x;
94 const int c_eb = c_et + ybf->uv_height - ybf->uv_crop_height;
95 const int c_er = c_el + ybf->uv_width - ybf->uv_crop_width;
97 assert(ybf->y_height - ybf->y_crop_height < 16);
98 assert(ybf->y_width - ybf->y_crop_width < 16);
99 assert(ybf->y_height - ybf->y_crop_height >= 0);
100 assert(ybf->y_width - ybf->y_crop_width >= 0);
102 extend_plane(ybf->y_buffer, ybf->y_stride,
103 ybf->y_crop_width, ybf->y_crop_height,
105 ext_size + ybf->y_height - ybf->y_crop_height,
106 ext_size + ybf->y_width - ybf->y_crop_width);
108 extend_plane(ybf->u_buffer, ybf->uv_stride,
109 c_w, c_h, c_et, c_el, c_eb, c_er);
111 extend_plane(ybf->v_buffer, ybf->uv_stride,
112 c_w, c_h, c_et, c_el, c_eb, c_er);
115 void vp9_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf) {
116 extend_frame(ybf, ybf->border);
119 void vp9_extend_frame_inner_borders_c(YV12_BUFFER_CONFIG *ybf) {
120 const int inner_bw = (ybf->border > VP9INNERBORDERINPIXELS) ?
121 VP9INNERBORDERINPIXELS : ybf->border;
122 extend_frame(ybf, inner_bw);
126 // Copies the source image into the destination image and updates the
127 // destination's UMV borders.
128 // Note: The frames are assumed to be identical in size.
129 void vp8_yv12_copy_frame_c(const YV12_BUFFER_CONFIG *src_ybc,
130 YV12_BUFFER_CONFIG *dst_ybc) {
132 const uint8_t *src = src_ybc->y_buffer;
133 uint8_t *dst = dst_ybc->y_buffer;
136 /* These assertions are valid in the codec, but the libvpx-tester uses
137 * this code slightly differently.
139 assert(src_ybc->y_width == dst_ybc->y_width);
140 assert(src_ybc->y_height == dst_ybc->y_height);
143 for (row = 0; row < src_ybc->y_height; ++row) {
144 vpx_memcpy(dst, src, src_ybc->y_width);
145 src += src_ybc->y_stride;
146 dst += dst_ybc->y_stride;
149 src = src_ybc->u_buffer;
150 dst = dst_ybc->u_buffer;
152 for (row = 0; row < src_ybc->uv_height; ++row) {
153 vpx_memcpy(dst, src, src_ybc->uv_width);
154 src += src_ybc->uv_stride;
155 dst += dst_ybc->uv_stride;
158 src = src_ybc->v_buffer;
159 dst = dst_ybc->v_buffer;
161 for (row = 0; row < src_ybc->uv_height; ++row) {
162 vpx_memcpy(dst, src, src_ybc->uv_width);
163 src += src_ybc->uv_stride;
164 dst += dst_ybc->uv_stride;
167 vp8_yv12_extend_frame_borders_c(dst_ybc);
170 void vpx_yv12_copy_y_c(const YV12_BUFFER_CONFIG *src_ybc,
171 YV12_BUFFER_CONFIG *dst_ybc) {
173 const uint8_t *src = src_ybc->y_buffer;
174 uint8_t *dst = dst_ybc->y_buffer;
176 for (row = 0; row < src_ybc->y_height; ++row) {
177 vpx_memcpy(dst, src, src_ybc->y_width);
178 src += src_ybc->y_stride;
179 dst += dst_ybc->y_stride;