1 /*
2 * Copyright © 2018, VideoLAN and dav1d authors
3 * Copyright © 2018, Two Orioles, LLC
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this
10 * list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "config.h"
29
30 #include <stdio.h>
31
32 #include "common/intops.h"
33
34 #include "src/lr_apply.h"
35
lr_stripe(const Dav1dFrameContext * const f,pixel * p,const pixel (* left)[4],int x,int y,const int plane,const int unit_w,const int row_h,const Av1RestorationUnit * const lr,enum LrEdgeFlags edges)36 static void lr_stripe(const Dav1dFrameContext *const f, pixel *p,
37 const pixel (*left)[4], int x, int y,
38 const int plane, const int unit_w, const int row_h,
39 const Av1RestorationUnit *const lr, enum LrEdgeFlags edges)
40 {
41 const Dav1dDSPContext *const dsp = f->dsp;
42 const int chroma = !!plane;
43 const int ss_ver = chroma & (f->sr_cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420);
44 const ptrdiff_t stride = f->sr_cur.p.stride[chroma];
45 const int sby = (y + (y ? 8 << ss_ver : 0)) >> (6 - ss_ver + f->seq_hdr->sb128);
46 const int have_tt = f->c->n_tc > 1;
47 const pixel *lpf = f->lf.lr_lpf_line[plane] +
48 have_tt * (sby * (4 << f->seq_hdr->sb128) - 4) * PXSTRIDE(stride) + x;
49
50 // The first stripe of the frame is shorter by 8 luma pixel rows.
51 int stripe_h = imin((64 - 8 * !y) >> ss_ver, row_h - y);
52
53 looprestorationfilter_fn lr_fn;
54 LooprestorationParams params;
55 if (lr->type == DAV1D_RESTORATION_WIENER) {
56 int16_t (*const filter)[8] = params.filter;
57 filter[0][0] = filter[0][6] = lr->filter_h[0];
58 filter[0][1] = filter[0][5] = lr->filter_h[1];
59 filter[0][2] = filter[0][4] = lr->filter_h[2];
60 filter[0][3] = -(filter[0][0] + filter[0][1] + filter[0][2]) * 2;
61 #if BITDEPTH != 8
62 /* For 8-bit SIMD it's beneficial to handle the +128 separately
63 * in order to avoid overflows. */
64 filter[0][3] += 128;
65 #endif
66
67 filter[1][0] = filter[1][6] = lr->filter_v[0];
68 filter[1][1] = filter[1][5] = lr->filter_v[1];
69 filter[1][2] = filter[1][4] = lr->filter_v[2];
70 filter[1][3] = 128 - (filter[1][0] + filter[1][1] + filter[1][2]) * 2;
71
72 lr_fn = dsp->lr.wiener[!(filter[0][0] | filter[1][0])];
73 } else {
74 assert(lr->type >= DAV1D_RESTORATION_SGRPROJ);
75 const int sgr_idx = lr->type - DAV1D_RESTORATION_SGRPROJ;
76 const uint16_t *const sgr_params = dav1d_sgr_params[sgr_idx];
77 params.sgr.s0 = sgr_params[0];
78 params.sgr.s1 = sgr_params[1];
79 params.sgr.w0 = lr->sgr_weights[0];
80 params.sgr.w1 = 128 - (lr->sgr_weights[0] + lr->sgr_weights[1]);
81
82 lr_fn = dsp->lr.sgr[!!sgr_params[0] + !!sgr_params[1] * 2 - 1];
83 }
84
85 while (y + stripe_h <= row_h) {
86 // Change the HAVE_BOTTOM bit in edges to (sby + 1 != f->sbh || y + stripe_h != row_h)
87 edges ^= (-(sby + 1 != f->sbh || y + stripe_h != row_h) ^ edges) & LR_HAVE_BOTTOM;
88 lr_fn(p, stride, left, lpf, unit_w, stripe_h, ¶ms, edges HIGHBD_CALL_SUFFIX);
89
90 left += stripe_h;
91 y += stripe_h;
92 p += stripe_h * PXSTRIDE(stride);
93 edges |= LR_HAVE_TOP;
94 stripe_h = imin(64 >> ss_ver, row_h - y);
95 if (stripe_h == 0) break;
96 lpf += 4 * PXSTRIDE(stride);
97 }
98 }
99
backup4xU(pixel (* dst)[4],const pixel * src,const ptrdiff_t src_stride,int u)100 static void backup4xU(pixel (*dst)[4], const pixel *src, const ptrdiff_t src_stride,
101 int u)
102 {
103 for (; u > 0; u--, dst++, src += PXSTRIDE(src_stride))
104 pixel_copy(dst, src, 4);
105 }
106
lr_sbrow(const Dav1dFrameContext * const f,pixel * p,const int y,const int w,const int h,const int row_h,const int plane)107 static void lr_sbrow(const Dav1dFrameContext *const f, pixel *p, const int y,
108 const int w, const int h, const int row_h, const int plane)
109 {
110 const int chroma = !!plane;
111 const int ss_ver = chroma & (f->sr_cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420);
112 const int ss_hor = chroma & (f->sr_cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I444);
113 const ptrdiff_t p_stride = f->sr_cur.p.stride[chroma];
114
115 const int unit_size_log2 = f->frame_hdr->restoration.unit_size[!!plane];
116 const int unit_size = 1 << unit_size_log2;
117 const int half_unit_size = unit_size >> 1;
118 const int max_unit_size = unit_size + half_unit_size;
119
120 // Y coordinate of the sbrow (y is 8 luma pixel rows above row_y)
121 const int row_y = y + ((8 >> ss_ver) * !!y);
122
123 // FIXME This is an ugly hack to lookup the proper AV1Filter unit for
124 // chroma planes. Question: For Multithreaded decoding, is it better
125 // to store the chroma LR information with collocated Luma information?
126 // In other words. For a chroma restoration unit locate at 128,128 and
127 // with a 4:2:0 chroma subsampling, do we store the filter information at
128 // the AV1Filter unit located at (128,128) or (256,256)
129 // TODO Support chroma subsampling.
130 const int shift_hor = 7 - ss_hor;
131
132 /* maximum sbrow height is 128 + 8 rows offset */
133 ALIGN_STK_16(pixel, pre_lr_border, 2, [128 + 8][4]);
134 const Av1RestorationUnit *lr[2];
135
136 enum LrEdgeFlags edges = (y > 0 ? LR_HAVE_TOP : 0) | LR_HAVE_RIGHT;
137
138 int aligned_unit_pos = row_y & ~(unit_size - 1);
139 if (aligned_unit_pos && aligned_unit_pos + half_unit_size > h)
140 aligned_unit_pos -= unit_size;
141 aligned_unit_pos <<= ss_ver;
142 const int sb_idx = (aligned_unit_pos >> 7) * f->sr_sb128w;
143 const int unit_idx = ((aligned_unit_pos >> 6) & 1) << 1;
144 lr[0] = &f->lf.lr_mask[sb_idx].lr[plane][unit_idx];
145 int restore = lr[0]->type != DAV1D_RESTORATION_NONE;
146 int x = 0, bit = 0;
147 for (; x + max_unit_size <= w; p += unit_size, edges |= LR_HAVE_LEFT, bit ^= 1) {
148 const int next_x = x + unit_size;
149 const int next_u_idx = unit_idx + ((next_x >> (shift_hor - 1)) & 1);
150 lr[!bit] =
151 &f->lf.lr_mask[sb_idx + (next_x >> shift_hor)].lr[plane][next_u_idx];
152 const int restore_next = lr[!bit]->type != DAV1D_RESTORATION_NONE;
153 if (restore_next)
154 backup4xU(pre_lr_border[bit], p + unit_size - 4, p_stride, row_h - y);
155 if (restore)
156 lr_stripe(f, p, pre_lr_border[!bit], x, y, plane, unit_size, row_h,
157 lr[bit], edges);
158 x = next_x;
159 restore = restore_next;
160 }
161 if (restore) {
162 edges &= ~LR_HAVE_RIGHT;
163 const int unit_w = w - x;
164 lr_stripe(f, p, pre_lr_border[!bit], x, y, plane, unit_w, row_h, lr[bit], edges);
165 }
166 }
167
bytefn(dav1d_lr_sbrow)168 void bytefn(dav1d_lr_sbrow)(Dav1dFrameContext *const f, pixel *const dst[3],
169 const int sby)
170 {
171 const int offset_y = 8 * !!sby;
172 const ptrdiff_t *const dst_stride = f->sr_cur.p.stride;
173 const int restore_planes = f->lf.restore_planes;
174 const int not_last = sby + 1 < f->sbh;
175
176 if (restore_planes & LR_RESTORE_Y) {
177 const int h = f->sr_cur.p.p.h;
178 const int w = f->sr_cur.p.p.w;
179 const int next_row_y = (sby + 1) << (6 + f->seq_hdr->sb128);
180 const int row_h = imin(next_row_y - 8 * not_last, h);
181 const int y_stripe = (sby << (6 + f->seq_hdr->sb128)) - offset_y;
182 lr_sbrow(f, dst[0] - offset_y * PXSTRIDE(dst_stride[0]), y_stripe, w,
183 h, row_h, 0);
184 }
185 if (restore_planes & (LR_RESTORE_U | LR_RESTORE_V)) {
186 const int ss_ver = f->sr_cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420;
187 const int ss_hor = f->sr_cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I444;
188 const int h = (f->sr_cur.p.p.h + ss_ver) >> ss_ver;
189 const int w = (f->sr_cur.p.p.w + ss_hor) >> ss_hor;
190 const int next_row_y = (sby + 1) << ((6 - ss_ver) + f->seq_hdr->sb128);
191 const int row_h = imin(next_row_y - (8 >> ss_ver) * not_last, h);
192 const int offset_uv = offset_y >> ss_ver;
193 const int y_stripe = (sby << ((6 - ss_ver) + f->seq_hdr->sb128)) - offset_uv;
194 if (restore_planes & LR_RESTORE_U)
195 lr_sbrow(f, dst[1] - offset_uv * PXSTRIDE(dst_stride[1]), y_stripe,
196 w, h, row_h, 1);
197
198 if (restore_planes & LR_RESTORE_V)
199 lr_sbrow(f, dst[2] - offset_uv * PXSTRIDE(dst_stride[1]), y_stripe,
200 w, h, row_h, 2);
201 }
202 }
203