FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/vp9lpf.c
Date: 2025-07-11 09:13:03
Exec Total Coverage
Lines: 112 112 100.0%
Functions: 3 3 100.0%
Branches: 60 60 100.0%
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1 /*
2 * VP9 compatible video decoder
3 *
4 * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
5 * Copyright (C) 2013 Clément Bœsch <u pkh me>
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #include "avcodec.h"
25 #include "vp9dec.h"
26
27 149298 static av_always_inline void filter_plane_cols(VP9Context *s, int col, int ss_h, int ss_v,
28 uint8_t *lvl, uint8_t (*mask)[4],
29 uint8_t *dst, ptrdiff_t ls)
30 {
31 149298 int y, x, bytesperpixel = s->bytesperpixel;
32
33 // filter edges between columns (e.g. block1 | block2)
34
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 550738 for (y = 0; y < 8; y += 2 << ss_v, dst += 16 * ls, lvl += 16 << ss_v) {
35 401440 uint8_t *ptr = dst, *l = lvl, *hmask1 = mask[y], *hmask2 = mask[y + 1 + ss_v];
36 401440 unsigned hm1 = hmask1[0] | hmask1[1] | hmask1[2], hm13 = hmask1[3];
37 401440 unsigned hm2 = hmask2[1] | hmask2[2], hm23 = hmask2[3];
38 401440 unsigned hm = hm1 | hm2 | hm13 | hm23;
39
40
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 2191788 for (x = 1; hm & ~(x - 1); x <<= 1, ptr += 8 * bytesperpixel >> ss_h) {
41
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 1790348 if (col || x > 1) {
42
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 1736933 if (hm1 & x) {
43 1177739 int L = *l, H = L >> 4;
44 1177739 int E = s->filter_lut.mblim_lut[L], I = s->filter_lut.lim_lut[L];
45
46
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 1177739 if (hmask1[0] & x) {
47
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 345292 if (hmask2[0] & x) {
48 av_assert2(l[8 << ss_v] == L);
49 343504 s->dsp.loop_filter_16[0](ptr, ls, E, I, H);
50 } else {
51 1788 s->dsp.loop_filter_8[2][0](ptr, ls, E, I, H);
52 }
53
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 832447 } else if (hm2 & x) {
54 766320 L = l[8 << ss_v];
55 766320 H |= (L >> 4) << 8;
56 766320 E |= s->filter_lut.mblim_lut[L] << 8;
57 766320 I |= s->filter_lut.lim_lut[L] << 8;
58 766320 s->dsp.loop_filter_mix2[!!(hmask1[1] & x)]
59 766320 [!!(hmask2[1] & x)]
60 766320 [0](ptr, ls, E, I, H);
61 } else {
62 66127 s->dsp.loop_filter_8[!!(hmask1[1] & x)]
63 66127 [0](ptr, ls, E, I, H);
64 }
65
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 559194 } else if (hm2 & x) {
66 33532 int L = l[8 << ss_v], H = L >> 4;
67 33532 int E = s->filter_lut.mblim_lut[L], I = s->filter_lut.lim_lut[L];
68
69 33532 s->dsp.loop_filter_8[!!(hmask2[1] & x)]
70 33532 [0](ptr + 8 * ls, ls, E, I, H);
71 }
72 }
73
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 1790348 if (ss_h) {
74
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 867642 if (x & 0xAA)
75 362726 l += 2;
76 } else {
77
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 922706 if (hm13 & x) {
78 115223 int L = *l, H = L >> 4;
79 115223 int E = s->filter_lut.mblim_lut[L], I = s->filter_lut.lim_lut[L];
80
81
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 115223 if (hm23 & x) {
82 66821 L = l[8 << ss_v];
83 66821 H |= (L >> 4) << 8;
84 66821 E |= s->filter_lut.mblim_lut[L] << 8;
85 66821 I |= s->filter_lut.lim_lut[L] << 8;
86 66821 s->dsp.loop_filter_mix2[0][0][0](ptr + 4 * bytesperpixel, ls, E, I, H);
87 } else {
88 48402 s->dsp.loop_filter_8[0][0](ptr + 4 * bytesperpixel, ls, E, I, H);
89 }
90
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 807483 } else if (hm23 & x) {
91 39533 int L = l[8 << ss_v], H = L >> 4;
92 39533 int E = s->filter_lut.mblim_lut[L], I = s->filter_lut.lim_lut[L];
93
94 39533 s->dsp.loop_filter_8[0][0](ptr + 8 * ls + 4 * bytesperpixel, ls, E, I, H);
95 }
96 922706 l++;
97 }
98 }
99 }
100 149298 }
101
102 149298 static av_always_inline void filter_plane_rows(VP9Context *s, int row, int ss_h, int ss_v,
103 uint8_t *lvl, uint8_t (*mask)[4],
104 uint8_t *dst, ptrdiff_t ls)
105 {
106 149298 int y, x, bytesperpixel = s->bytesperpixel;
107
108 // block1
109 // filter edges between rows (e.g. ------)
110 // block2
111
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 1343682 for (y = 0; y < 8; y++, dst += 8 * ls >> ss_v) {
112 1194384 uint8_t *ptr = dst, *l = lvl, *vmask = mask[y];
113 1194384 unsigned vm = vmask[0] | vmask[1] | vmask[2], vm3 = vmask[3];
114
115
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 2580163 for (x = 1; vm & ~(x - 1); x <<= (2 << ss_h), ptr += 16 * bytesperpixel, l += 2 << ss_h) {
116
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 1385779 if (row || y) {
117
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 1317304 if (vm & x) {
118 1169997 int L = *l, H = L >> 4;
119 1169997 int E = s->filter_lut.mblim_lut[L], I = s->filter_lut.lim_lut[L];
120
121
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 1169997 if (vmask[0] & x) {
122
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 347705 if (vmask[0] & (x << (1 + ss_h))) {
123 av_assert2(l[1 + ss_h] == L);
124 347386 s->dsp.loop_filter_16[1](ptr, ls, E, I, H);
125 } else {
126 319 s->dsp.loop_filter_8[2][1](ptr, ls, E, I, H);
127 }
128
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 822292 } else if (vm & (x << (1 + ss_h))) {
129 754663 L = l[1 + ss_h];
130 754663 H |= (L >> 4) << 8;
131 754663 E |= s->filter_lut.mblim_lut[L] << 8;
132 754663 I |= s->filter_lut.lim_lut[L] << 8;
133 754663 s->dsp.loop_filter_mix2[!!(vmask[1] & x)]
134 754663 [!!(vmask[1] & (x << (1 + ss_h)))]
135 754663 [1](ptr, ls, E, I, H);
136 } else {
137 67629 s->dsp.loop_filter_8[!!(vmask[1] & x)]
138 67629 [1](ptr, ls, E, I, H);
139 }
140
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 147307 } else if (vm & (x << (1 + ss_h))) {
141 35358 int L = l[1 + ss_h], H = L >> 4;
142 35358 int E = s->filter_lut.mblim_lut[L], I = s->filter_lut.lim_lut[L];
143
144 35358 s->dsp.loop_filter_8[!!(vmask[1] & (x << (1 + ss_h)))]
145 35358 [1](ptr + 8 * bytesperpixel, ls, E, I, H);
146 }
147 }
148
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 1385779 if (!ss_v) {
149
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 754557 if (vm3 & x) {
150 110039 int L = *l, H = L >> 4;
151 110039 int E = s->filter_lut.mblim_lut[L], I = s->filter_lut.lim_lut[L];
152
153
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 110039 if (vm3 & (x << (1 + ss_h))) {
154 65543 L = l[1 + ss_h];
155 65543 H |= (L >> 4) << 8;
156 65543 E |= s->filter_lut.mblim_lut[L] << 8;
157 65543 I |= s->filter_lut.lim_lut[L] << 8;
158 65543 s->dsp.loop_filter_mix2[0][0][1](ptr + ls * 4, ls, E, I, H);
159 } else {
160 44496 s->dsp.loop_filter_8[0][1](ptr + ls * 4, ls, E, I, H);
161 }
162
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 644518 } else if (vm3 & (x << (1 + ss_h))) {
163 42225 int L = l[1 + ss_h], H = L >> 4;
164 42225 int E = s->filter_lut.mblim_lut[L], I = s->filter_lut.lim_lut[L];
165
166 42225 s->dsp.loop_filter_8[0][1](ptr + ls * 4 + 8 * bytesperpixel, ls, E, I, H);
167 }
168 }
169 }
170
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 1194384 if (ss_v) {
171
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 783008 if (y & 1)
172 391504 lvl += 16;
173 } else {
174 411376 lvl += 8;
175 }
176 }
177 149298 }
178
179 49766 void ff_vp9_loopfilter_sb(AVCodecContext *avctx, VP9Filter *lflvl,
180 int row, int col, ptrdiff_t yoff, ptrdiff_t uvoff)
181 {
182 49766 VP9Context *s = avctx->priv_data;
183 49766 AVFrame *f = s->s.frames[CUR_FRAME].tf.f;
184 49766 uint8_t *dst = f->data[0] + yoff;
185 49766 ptrdiff_t ls_y = f->linesize[0], ls_uv = f->linesize[1];
186 49766 uint8_t (*uv_masks)[8][4] = lflvl->mask[s->ss_h | s->ss_v];
187 int p;
188
189 /* FIXME: In how far can we interleave the v/h loopfilter calls? E.g.
190 * if you think of them as acting on a 8x8 block max, we can interleave
191 * each v/h within the single x loop, but that only works if we work on
192 * 8 pixel blocks, and we won't always do that (we want at least 16px
193 * to use SSE2 optimizations, perhaps 32 for AVX2) */
194
195 49766 filter_plane_cols(s, col, 0, 0, lflvl->level, lflvl->mask[0][0], dst, ls_y);
196 49766 filter_plane_rows(s, row, 0, 0, lflvl->level, lflvl->mask[0][1], dst, ls_y);
197
198
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 149298 for (p = 0; p < 2; p++) {
199 99532 dst = f->data[1 + p] + uvoff;
200 99532 filter_plane_cols(s, col, s->ss_h, s->ss_v, lflvl->level, uv_masks[0], dst, ls_uv);
201 99532 filter_plane_rows(s, row, s->ss_h, s->ss_v, lflvl->level, uv_masks[1], dst, ls_uv);
202 }
203 49766 }
204