FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_bitplanenoise.c
Date: 2022-12-05 20:26:17
Exec Total Coverage
Lines: 0 69 0.0%
Functions: 0 2 0.0%
Branches: 0 64 0.0%

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1 /*
2 * Copyright (c) 2016 Paul B Mahol
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "libavutil/opt.h"
22 #include "libavutil/imgutils.h"
23 #include "avfilter.h"
24 #include "formats.h"
25 #include "internal.h"
26 #include "video.h"
27
28 typedef struct BPNContext {
29 const AVClass *class;
30
31 int bitplane;
32 int filter;
33
34 int nb_planes;
35 int planeheight[4];
36 int planewidth[4];
37 int depth;
38 } BPNContext;
39
40 #define OFFSET(x) offsetof(BPNContext, x)
41 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
42 static const AVOption bitplanenoise_options[] = {
43 { "bitplane", "set bit plane to use for measuring noise", OFFSET(bitplane), AV_OPT_TYPE_INT, {.i64=1}, 1, 16, FLAGS},
44 { "filter", "show noisy pixels", OFFSET(filter), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
45 { NULL }
46 };
47
48 AVFILTER_DEFINE_CLASS(bitplanenoise);
49
50 static const enum AVPixelFormat pixfmts[] = {
51 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
52 AV_PIX_FMT_YUV440P,
53 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
54 AV_PIX_FMT_YUVJ440P,
55 AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV420P9,
56 AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV420P10,
57 AV_PIX_FMT_YUV440P10,
58 AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
59 AV_PIX_FMT_YUV440P12,
60 AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
61 AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV420P16,
62 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
63 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
64 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
65 AV_PIX_FMT_NONE
66 };
67
68 static int config_input(AVFilterLink *inlink)
69 {
70 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
71 AVFilterContext *ctx = inlink->dst;
72 BPNContext *s = ctx->priv;
73
74 s->nb_planes = desc->nb_components;
75
76 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
77 s->planeheight[0] = s->planeheight[3] = inlink->h;
78 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
79 s->planewidth[0] = s->planewidth[3] = inlink->w;
80
81 s->depth = desc->comp[0].depth;
82
83 return 0;
84 }
85
86 #define CHECK_BIT(x, a, b, c) { \
87 bit = (((val[(x)] & mask) == (val[(x) + (a)] & mask)) + \
88 ((val[(x)] & mask) == (val[(x) + (b)] & mask)) + \
89 ((val[(x)] & mask) == (val[(x) + (c)] & mask))) > 1; \
90 if (dst) \
91 dst[(x)] = factor * bit; \
92 stats[plane] += bit; }
93
94 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
95 {
96 AVFilterContext *ctx = inlink->dst;
97 AVFilterLink *outlink = ctx->outputs[0];
98 BPNContext *s = ctx->priv;
99 const int mask = (1 << (s->bitplane - 1));
100 const int factor = (1 << s->depth) - 1;
101 float stats[4] = { 0 };
102 char metabuf[128];
103 int plane, y, x, bit;
104 AVFrame *out = s->filter ? NULL : in;
105
106 if (!out) {
107 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
108 if (!out) {
109 av_frame_free(&in);
110 return AVERROR(ENOMEM);
111 }
112 av_frame_copy_props(out, in);
113 }
114
115 if (s->depth <= 8) {
116 for (plane = 0; plane < s->nb_planes; plane++) {
117 const int linesize = s->planeheight[plane] > 1 ? in->linesize[plane] : 0;
118 const int dlinesize = out->linesize[plane];
119 uint8_t *val = in->data[plane];
120 uint8_t *dst = s->filter ? out->data[plane]: NULL;
121
122 for (y = 0; y < s->planeheight[plane] - 1; y++) {
123 CHECK_BIT(0, 1, 1 + linesize, linesize)
124
125 for (x = 1; x < s->planewidth[plane] - 1; x++) {
126 CHECK_BIT(x, -1, 1, linesize)
127 }
128
129 CHECK_BIT(x, -1, -1 + linesize, linesize)
130
131 val += linesize;
132 if (dst)
133 dst += dlinesize;
134 }
135
136 CHECK_BIT(0, 1, 1 - linesize, -linesize)
137
138 for (x = 1; x < s->planewidth[plane] - 1; x++) {
139 CHECK_BIT(x, -1, 1, -linesize)
140 }
141
142 CHECK_BIT(x, -1, -1 - linesize, -linesize)
143 }
144 } else {
145 for (plane = 0; plane < s->nb_planes; plane++) {
146 const int linesize = s->planeheight[plane] > 1 ? in->linesize[plane] / 2 : 0;
147 const int dlinesize = out->linesize[plane] / 2;
148 uint16_t *val = (uint16_t *)in->data[plane];
149 uint16_t *dst = s->filter ? (uint16_t *)out->data[plane] : NULL;
150
151 val = (uint16_t *)in->data[plane];
152 for (y = 0; y < s->planeheight[plane] - 1; y++) {
153 CHECK_BIT(0, 1, 1 + linesize, linesize)
154
155 for (x = 1; x < s->planewidth[plane] - 1; x++) {
156 CHECK_BIT(x, -1, 1, linesize)
157 }
158
159 CHECK_BIT(x, -1, -1 + linesize, linesize)
160
161 val += linesize;
162 if (dst)
163 dst += dlinesize;
164 }
165
166 CHECK_BIT(0, 1, 1 - linesize, -linesize)
167
168 for (x = 1; x < s->planewidth[plane] - 1; x++) {
169 CHECK_BIT(x, -1, 1, -linesize)
170 }
171
172 CHECK_BIT(x, -1, -1 -linesize, -linesize)
173 }
174 }
175
176 for (plane = 0; plane < s->nb_planes; plane++) {
177 char key[32];
178
179 stats[plane] /= s->planewidth[plane] * s->planeheight[plane];
180 snprintf(key, sizeof(key), "lavfi.bitplanenoise.%d.%d", plane, s->bitplane);
181 snprintf(metabuf, sizeof(metabuf), "%f", 1. - 2.* fabs((stats[plane] - 0.5)));
182 av_dict_set(&out->metadata, key, metabuf, 0);
183 }
184
185 if (out != in)
186 av_frame_free(&in);
187
188 return ff_filter_frame(outlink, out);
189 }
190
191 static const AVFilterPad inputs[] = {
192 {
193 .name = "default",
194 .type = AVMEDIA_TYPE_VIDEO,
195 .filter_frame = filter_frame,
196 .config_props = config_input,
197 },
198 };
199
200 static const AVFilterPad outputs[] = {
201 {
202 .name = "default",
203 .type = AVMEDIA_TYPE_VIDEO,
204 },
205 };
206
207 const AVFilter ff_vf_bitplanenoise = {
208 .name = "bitplanenoise",
209 .description = NULL_IF_CONFIG_SMALL("Measure bit plane noise."),
210 .priv_size = sizeof(BPNContext),
211 FILTER_INPUTS(inputs),
212 FILTER_OUTPUTS(outputs),
213 FILTER_PIXFMTS_ARRAY(pixfmts),
214 .priv_class = &bitplanenoise_class,
215 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
216 };
217