FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_bitplanenoise.c
Date: 2024-02-16 17:37:06
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/pixdesc.h"
23 #include "avfilter.h"
24 #include "internal.h"
25 #include "video.h"
26
27 typedef struct BPNContext {
28 const AVClass *class;
29
30 int bitplane;
31 int filter;
32
33 int nb_planes;
34 int planeheight[4];
35 int planewidth[4];
36 int depth;
37 } BPNContext;
38
39 #define OFFSET(x) offsetof(BPNContext, x)
40 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
41 static const AVOption bitplanenoise_options[] = {
42 { "bitplane", "set bit plane to use for measuring noise", OFFSET(bitplane), AV_OPT_TYPE_INT, {.i64=1}, 1, 16, FLAGS},
43 { "filter", "show noisy pixels", OFFSET(filter), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
44 { NULL }
45 };
46
47 AVFILTER_DEFINE_CLASS(bitplanenoise);
48
49 static const enum AVPixelFormat pixfmts[] = {
50 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
51 AV_PIX_FMT_YUV440P,
52 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
53 AV_PIX_FMT_YUVJ440P,
54 AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV420P9,
55 AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV420P10,
56 AV_PIX_FMT_YUV440P10,
57 AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
58 AV_PIX_FMT_YUV440P12,
59 AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
60 AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV420P16,
61 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
62 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
63 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
64 AV_PIX_FMT_NONE
65 };
66
67 static int config_input(AVFilterLink *inlink)
68 {
69 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
70 AVFilterContext *ctx = inlink->dst;
71 BPNContext *s = ctx->priv;
72
73 s->nb_planes = desc->nb_components;
74
75 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
76 s->planeheight[0] = s->planeheight[3] = inlink->h;
77 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
78 s->planewidth[0] = s->planewidth[3] = inlink->w;
79
80 s->depth = desc->comp[0].depth;
81
82 return 0;
83 }
84
85 #define CHECK_BIT(x, a, b, c) { \
86 bit = (((val[(x)] & mask) == (val[(x) + (a)] & mask)) + \
87 ((val[(x)] & mask) == (val[(x) + (b)] & mask)) + \
88 ((val[(x)] & mask) == (val[(x) + (c)] & mask))) > 1; \
89 if (dst) \
90 dst[(x)] = factor * bit; \
91 stats[plane] += bit; }
92
93 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
94 {
95 AVFilterContext *ctx = inlink->dst;
96 AVFilterLink *outlink = ctx->outputs[0];
97 BPNContext *s = ctx->priv;
98 const int mask = (1 << (s->bitplane - 1));
99 const int factor = (1 << s->depth) - 1;
100 float stats[4] = { 0 };
101 char metabuf[128];
102 int plane, y, x, bit;
103 AVFrame *out = s->filter ? NULL : in;
104
105 if (!out) {
106 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
107 if (!out) {
108 av_frame_free(&in);
109 return AVERROR(ENOMEM);
110 }
111 av_frame_copy_props(out, in);
112 }
113
114 if (s->depth <= 8) {
115 for (plane = 0; plane < s->nb_planes; plane++) {
116 const int linesize = s->planeheight[plane] > 1 ? in->linesize[plane] : 0;
117 const int dlinesize = out->linesize[plane];
118 uint8_t *val = in->data[plane];
119 uint8_t *dst = s->filter ? out->data[plane]: NULL;
120
121 for (y = 0; y < s->planeheight[plane] - 1; y++) {
122 CHECK_BIT(0, 1, 1 + linesize, linesize)
123
124 for (x = 1; x < s->planewidth[plane] - 1; x++) {
125 CHECK_BIT(x, -1, 1, linesize)
126 }
127
128 CHECK_BIT(x, -1, -1 + linesize, linesize)
129
130 val += linesize;
131 if (dst)
132 dst += dlinesize;
133 }
134
135 CHECK_BIT(0, 1, 1 - linesize, -linesize)
136
137 for (x = 1; x < s->planewidth[plane] - 1; x++) {
138 CHECK_BIT(x, -1, 1, -linesize)
139 }
140
141 CHECK_BIT(x, -1, -1 - linesize, -linesize)
142 }
143 } else {
144 for (plane = 0; plane < s->nb_planes; plane++) {
145 const int linesize = s->planeheight[plane] > 1 ? in->linesize[plane] / 2 : 0;
146 const int dlinesize = out->linesize[plane] / 2;
147 uint16_t *val = (uint16_t *)in->data[plane];
148 uint16_t *dst = s->filter ? (uint16_t *)out->data[plane] : NULL;
149
150 val = (uint16_t *)in->data[plane];
151 for (y = 0; y < s->planeheight[plane] - 1; y++) {
152 CHECK_BIT(0, 1, 1 + linesize, linesize)
153
154 for (x = 1; x < s->planewidth[plane] - 1; x++) {
155 CHECK_BIT(x, -1, 1, linesize)
156 }
157
158 CHECK_BIT(x, -1, -1 + linesize, linesize)
159
160 val += linesize;
161 if (dst)
162 dst += dlinesize;
163 }
164
165 CHECK_BIT(0, 1, 1 - linesize, -linesize)
166
167 for (x = 1; x < s->planewidth[plane] - 1; x++) {
168 CHECK_BIT(x, -1, 1, -linesize)
169 }
170
171 CHECK_BIT(x, -1, -1 -linesize, -linesize)
172 }
173 }
174
175 for (plane = 0; plane < s->nb_planes; plane++) {
176 char key[32];
177
178 stats[plane] /= s->planewidth[plane] * s->planeheight[plane];
179 snprintf(key, sizeof(key), "lavfi.bitplanenoise.%d.%d", plane, s->bitplane);
180 snprintf(metabuf, sizeof(metabuf), "%f", 1. - 2.* fabs((stats[plane] - 0.5)));
181 av_dict_set(&out->metadata, key, metabuf, 0);
182 }
183
184 if (out != in)
185 av_frame_free(&in);
186
187 return ff_filter_frame(outlink, out);
188 }
189
190 static const AVFilterPad inputs[] = {
191 {
192 .name = "default",
193 .type = AVMEDIA_TYPE_VIDEO,
194 .filter_frame = filter_frame,
195 .config_props = config_input,
196 },
197 };
198
199 const AVFilter ff_vf_bitplanenoise = {
200 .name = "bitplanenoise",
201 .description = NULL_IF_CONFIG_SMALL("Measure bit plane noise."),
202 .priv_size = sizeof(BPNContext),
203 FILTER_INPUTS(inputs),
204 FILTER_OUTPUTS(ff_video_default_filterpad),
205 FILTER_PIXFMTS_ARRAY(pixfmts),
206 .priv_class = &bitplanenoise_class,
207 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
208 };
209