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