FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_maskedthreshold.c
Date: 2022-11-26 13:19:19
Exec Total Coverage
Lines: 0 118 0.0%
Branches: 0 48 0.0%

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1 /*
2 * Copyright (c) 2020 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/imgutils.h"
22 #include "libavutil/pixdesc.h"
23 #include "libavutil/opt.h"
24 #include "avfilter.h"
25 #include "formats.h"
26 #include "internal.h"
27 #include "video.h"
28 #include "framesync.h"
29
30 typedef struct MaskedThresholdContext {
31 const AVClass *class;
32
33 int threshold;
34 int planes;
35 int mode;
36
37 int linesize[4];
38 int planewidth[4], planeheight[4];
39 int nb_planes;
40 int depth;
41 FFFrameSync fs;
42
43 void (*maskedthreshold)(const uint8_t *src, const uint8_t *ref, uint8_t *dst, int threshold, int w);
44 } MaskedThresholdContext;
45
46 #define OFFSET(x) offsetof(MaskedThresholdContext, x)
47 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
48 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
49
50 typedef struct ThreadData {
51 AVFrame *src, *ref, *dst;
52 } ThreadData;
53
54 static const AVOption maskedthreshold_options[] = {
55 { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_INT, {.i64=1}, 0, UINT16_MAX, TFLAGS },
56 { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, TFLAGS },
57 { "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "mode" },
58 { "abs", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "mode" },
59 { "diff", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "mode" },
60 { NULL }
61 };
62
63 static const enum AVPixelFormat pix_fmts[] = {
64 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
65 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
66 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
67 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
68 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
69 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
70 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
71 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
72 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
73 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
74 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
75 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
76 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
77 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
78 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
79 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
80 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
81 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
82 AV_PIX_FMT_NONE
83 };
84
85 static void threshold8_diff(const uint8_t *src, const uint8_t *ref, uint8_t *dst, int threshold, int w)
86 {
87 for (int x = 0; x < w; x++)
88 dst[x] = (ref[x] - src[x] <= threshold) ? FFMAX(ref[x] - threshold, 0): src[x];
89 }
90
91 static void threshold8_abs(const uint8_t *src, const uint8_t *ref, uint8_t *dst, int threshold, int w)
92 {
93 for (int x = 0; x < w; x++)
94 dst[x] = FFABS(src[x] - ref[x]) <= threshold ? src[x] : ref[x];
95 }
96
97 static void threshold16_diff(const uint8_t *ssrc, const uint8_t *rref, uint8_t *ddst, int threshold, int w)
98 {
99 const uint16_t *src = (const uint16_t *)ssrc;
100 const uint16_t *ref = (const uint16_t *)rref;
101 uint16_t *dst = (uint16_t *)ddst;
102
103 for (int x = 0; x < w; x++)
104 dst[x] = (ref[x] - src[x] <= threshold) ? FFMAX(ref[x] - threshold, 0): src[x];
105 }
106
107 static void threshold16_abs(const uint8_t *ssrc, const uint8_t *rref, uint8_t *ddst, int threshold, int w)
108 {
109 const uint16_t *src = (const uint16_t *)ssrc;
110 const uint16_t *ref = (const uint16_t *)rref;
111 uint16_t *dst = (uint16_t *)ddst;
112
113 for (int x = 0; x < w; x++)
114 dst[x] = FFABS(src[x] - ref[x]) <= threshold ? src[x] : ref[x];
115 }
116
117 static int config_input(AVFilterLink *inlink)
118 {
119 AVFilterContext *ctx = inlink->dst;
120 MaskedThresholdContext *s = ctx->priv;
121 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
122 int vsub, hsub, ret;
123
124 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
125
126 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
127 return ret;
128
129 hsub = desc->log2_chroma_w;
130 vsub = desc->log2_chroma_h;
131 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
132 s->planeheight[0] = s->planeheight[3] = inlink->h;
133 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
134 s->planewidth[0] = s->planewidth[3] = inlink->w;
135
136 s->depth = desc->comp[0].depth;
137
138 if (desc->comp[0].depth == 8)
139 s->maskedthreshold = s->mode ? threshold8_diff : threshold8_abs;
140 else
141 s->maskedthreshold = s->mode ? threshold16_diff : threshold16_abs;
142
143 return 0;
144 }
145
146 static int threshold_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
147 {
148 MaskedThresholdContext *s = ctx->priv;
149 const int threshold = s->threshold;
150 ThreadData *td = arg;
151
152 for (int p = 0; p < s->nb_planes; p++) {
153 const ptrdiff_t src_linesize = td->src->linesize[p];
154 const ptrdiff_t ref_linesize = td->ref->linesize[p];
155 const ptrdiff_t dst_linesize = td->dst->linesize[p];
156 const int w = s->planewidth[p];
157 const int h = s->planeheight[p];
158 const int slice_start = (h * jobnr) / nb_jobs;
159 const int slice_end = (h * (jobnr+1)) / nb_jobs;
160 const uint8_t *src = td->src->data[p] + slice_start * src_linesize;
161 const uint8_t *ref = td->ref->data[p] + slice_start * ref_linesize;
162 uint8_t *dst = td->dst->data[p] + slice_start * dst_linesize;
163
164 if (!((1 << p) & s->planes)) {
165 av_image_copy_plane(dst, dst_linesize, ref, ref_linesize,
166 s->linesize[p], slice_end - slice_start);
167 continue;
168 }
169
170 for (int y = slice_start; y < slice_end; y++) {
171 s->maskedthreshold(src, ref, dst, threshold, w);
172
173 dst += dst_linesize;
174 src += src_linesize;
175 ref += ref_linesize;
176 }
177 }
178
179 return 0;
180 }
181
182 static int process_frame(FFFrameSync *fs)
183 {
184 AVFilterContext *ctx = fs->parent;
185 MaskedThresholdContext *s = fs->opaque;
186 AVFilterLink *outlink = ctx->outputs[0];
187 AVFrame *out, *src, *ref;
188 int ret;
189
190 if ((ret = ff_framesync_get_frame(&s->fs, 0, &src, 0)) < 0 ||
191 (ret = ff_framesync_get_frame(&s->fs, 1, &ref, 0)) < 0)
192 return ret;
193
194 if (ctx->is_disabled) {
195 out = av_frame_clone(src);
196 if (!out)
197 return AVERROR(ENOMEM);
198 } else {
199 ThreadData td;
200
201 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
202 if (!out)
203 return AVERROR(ENOMEM);
204 av_frame_copy_props(out, src);
205
206 td.src = src;
207 td.ref = ref;
208 td.dst = out;
209
210 ff_filter_execute(ctx, threshold_slice, &td, NULL,
211 FFMIN(s->planeheight[2], ff_filter_get_nb_threads(ctx)));
212 }
213 out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
214
215 return ff_filter_frame(outlink, out);
216 }
217
218 static int config_output(AVFilterLink *outlink)
219 {
220 AVFilterContext *ctx = outlink->src;
221 MaskedThresholdContext *s = ctx->priv;
222 AVFilterLink *source = ctx->inputs[0];
223 AVFilterLink *ref = ctx->inputs[1];
224 FFFrameSyncIn *in;
225 int ret;
226
227 if (source->w != ref->w || source->h != ref->h) {
228 av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
229 "(size %dx%d) do not match the corresponding "
230 "second input link %s parameters (%dx%d)\n",
231 ctx->input_pads[0].name, source->w, source->h,
232 ctx->input_pads[1].name, ref->w, ref->h);
233 return AVERROR(EINVAL);
234 }
235
236 outlink->w = source->w;
237 outlink->h = source->h;
238 outlink->sample_aspect_ratio = source->sample_aspect_ratio;
239 outlink->frame_rate = source->frame_rate;
240
241 if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
242 return ret;
243
244 in = s->fs.in;
245 in[0].time_base = source->time_base;
246 in[1].time_base = ref->time_base;
247 in[0].sync = 1;
248 in[0].before = EXT_STOP;
249 in[0].after = EXT_INFINITY;
250 in[1].sync = 1;
251 in[1].before = EXT_STOP;
252 in[1].after = EXT_INFINITY;
253 s->fs.opaque = s;
254 s->fs.on_event = process_frame;
255
256 ret = ff_framesync_configure(&s->fs);
257 outlink->time_base = s->fs.time_base;
258
259 return ret;
260 }
261
262 static int activate(AVFilterContext *ctx)
263 {
264 MaskedThresholdContext *s = ctx->priv;
265 return ff_framesync_activate(&s->fs);
266 }
267
268 static av_cold void uninit(AVFilterContext *ctx)
269 {
270 MaskedThresholdContext *s = ctx->priv;
271
272 ff_framesync_uninit(&s->fs);
273 }
274
275 static const AVFilterPad maskedthreshold_inputs[] = {
276 {
277 .name = "source",
278 .type = AVMEDIA_TYPE_VIDEO,
279 .config_props = config_input,
280 },
281 {
282 .name = "reference",
283 .type = AVMEDIA_TYPE_VIDEO,
284 },
285 };
286
287 static const AVFilterPad maskedthreshold_outputs[] = {
288 {
289 .name = "default",
290 .type = AVMEDIA_TYPE_VIDEO,
291 .config_props = config_output,
292 },
293 };
294
295 AVFILTER_DEFINE_CLASS(maskedthreshold);
296
297 const AVFilter ff_vf_maskedthreshold = {
298 .name = "maskedthreshold",
299 .description = NULL_IF_CONFIG_SMALL("Pick pixels comparing absolute difference of two streams with threshold."),
300 .priv_class = &maskedthreshold_class,
301 .priv_size = sizeof(MaskedThresholdContext),
302 .uninit = uninit,
303 .activate = activate,
304 FILTER_INPUTS(maskedthreshold_inputs),
305 FILTER_OUTPUTS(maskedthreshold_outputs),
306 FILTER_PIXFMTS_ARRAY(pix_fmts),
307 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
308 .process_command = ff_filter_process_command,
309 };
310