FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_maskedthreshold.c
Date: 2024-04-19 17:50:32
Exec Total Coverage
Lines: 0 123 0.0%
Functions: 0 10 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 "internal.h"
26 #include "video.h"
27 #include "framesync.h"
28
29 typedef struct MaskedThresholdContext {
30 const AVClass *class;
31
32 int threshold;
33 int planes;
34 int mode;
35
36 int linesize[4];
37 int planewidth[4], planeheight[4];
38 int nb_planes;
39 int depth;
40 FFFrameSync fs;
41
42 void (*maskedthreshold)(const uint8_t *src, const uint8_t *ref, uint8_t *dst, int threshold, int w);
43 } MaskedThresholdContext;
44
45 #define OFFSET(x) offsetof(MaskedThresholdContext, x)
46 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
47 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
48
49 typedef struct ThreadData {
50 AVFrame *src, *ref, *dst;
51 } ThreadData;
52
53 static const AVOption maskedthreshold_options[] = {
54 { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_INT, {.i64=1}, 0, UINT16_MAX, TFLAGS },
55 { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, TFLAGS },
56 { "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, .unit = "mode" },
57 { "abs", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, .unit = "mode" },
58 { "diff", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, .unit = "mode" },
59 { NULL }
60 };
61
62 static const enum AVPixelFormat pix_fmts[] = {
63 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
64 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
65 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
66 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
67 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
68 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
69 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
70 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
71 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
72 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
73 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
74 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
75 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
76 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
77 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
78 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
79 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
80 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
81 AV_PIX_FMT_NONE
82 };
83
84 static void threshold8_diff(const uint8_t *src, const uint8_t *ref, uint8_t *dst, int threshold, int w)
85 {
86 for (int x = 0; x < w; x++)
87 dst[x] = (ref[x] - src[x] <= threshold) ? FFMAX(ref[x] - threshold, 0): src[x];
88 }
89
90 static void threshold8_abs(const uint8_t *src, const uint8_t *ref, uint8_t *dst, int threshold, int w)
91 {
92 for (int x = 0; x < w; x++)
93 dst[x] = FFABS(src[x] - ref[x]) <= threshold ? src[x] : ref[x];
94 }
95
96 static void threshold16_diff(const uint8_t *ssrc, const uint8_t *rref, uint8_t *ddst, int threshold, int w)
97 {
98 const uint16_t *src = (const uint16_t *)ssrc;
99 const uint16_t *ref = (const uint16_t *)rref;
100 uint16_t *dst = (uint16_t *)ddst;
101
102 for (int x = 0; x < w; x++)
103 dst[x] = (ref[x] - src[x] <= threshold) ? FFMAX(ref[x] - threshold, 0): src[x];
104 }
105
106 static void threshold16_abs(const uint8_t *ssrc, const uint8_t *rref, uint8_t *ddst, int threshold, int w)
107 {
108 const uint16_t *src = (const uint16_t *)ssrc;
109 const uint16_t *ref = (const uint16_t *)rref;
110 uint16_t *dst = (uint16_t *)ddst;
111
112 for (int x = 0; x < w; x++)
113 dst[x] = FFABS(src[x] - ref[x]) <= threshold ? src[x] : ref[x];
114 }
115
116 static int config_input(AVFilterLink *inlink)
117 {
118 AVFilterContext *ctx = inlink->dst;
119 MaskedThresholdContext *s = ctx->priv;
120 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
121 int vsub, hsub, ret;
122
123 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
124
125 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
126 return ret;
127
128 hsub = desc->log2_chroma_w;
129 vsub = desc->log2_chroma_h;
130 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
131 s->planeheight[0] = s->planeheight[3] = inlink->h;
132 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
133 s->planewidth[0] = s->planewidth[3] = inlink->w;
134
135 s->depth = desc->comp[0].depth;
136
137 if (desc->comp[0].depth == 8)
138 s->maskedthreshold = s->mode ? threshold8_diff : threshold8_abs;
139 else
140 s->maskedthreshold = s->mode ? threshold16_diff : threshold16_abs;
141
142 return 0;
143 }
144
145 static int threshold_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
146 {
147 MaskedThresholdContext *s = ctx->priv;
148 const int threshold = s->threshold;
149 ThreadData *td = arg;
150
151 for (int p = 0; p < s->nb_planes; p++) {
152 const ptrdiff_t src_linesize = td->src->linesize[p];
153 const ptrdiff_t ref_linesize = td->ref->linesize[p];
154 const ptrdiff_t dst_linesize = td->dst->linesize[p];
155 const int w = s->planewidth[p];
156 const int h = s->planeheight[p];
157 const int slice_start = (h * jobnr) / nb_jobs;
158 const int slice_end = (h * (jobnr+1)) / nb_jobs;
159 const uint8_t *src = td->src->data[p] + slice_start * src_linesize;
160 const uint8_t *ref = td->ref->data[p] + slice_start * ref_linesize;
161 uint8_t *dst = td->dst->data[p] + slice_start * dst_linesize;
162
163 if (!((1 << p) & s->planes)) {
164 av_image_copy_plane(dst, dst_linesize, ref, ref_linesize,
165 s->linesize[p], slice_end - slice_start);
166 continue;
167 }
168
169 for (int y = slice_start; y < slice_end; y++) {
170 s->maskedthreshold(src, ref, dst, threshold, w);
171
172 dst += dst_linesize;
173 src += src_linesize;
174 ref += ref_linesize;
175 }
176 }
177
178 return 0;
179 }
180
181 static int process_frame(FFFrameSync *fs)
182 {
183 AVFilterContext *ctx = fs->parent;
184 MaskedThresholdContext *s = fs->opaque;
185 AVFilterLink *outlink = ctx->outputs[0];
186 AVFrame *out, *src, *ref;
187 int ret;
188
189 if ((ret = ff_framesync_get_frame(&s->fs, 0, &src, 0)) < 0 ||
190 (ret = ff_framesync_get_frame(&s->fs, 1, &ref, 0)) < 0)
191 return ret;
192
193 if (ctx->is_disabled) {
194 out = av_frame_clone(src);
195 if (!out)
196 return AVERROR(ENOMEM);
197 } else {
198 ThreadData td;
199
200 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
201 if (!out)
202 return AVERROR(ENOMEM);
203 av_frame_copy_props(out, src);
204
205 td.src = src;
206 td.ref = ref;
207 td.dst = out;
208
209 ff_filter_execute(ctx, threshold_slice, &td, NULL,
210 FFMIN(s->planeheight[2], ff_filter_get_nb_threads(ctx)));
211 }
212 out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
213
214 return ff_filter_frame(outlink, out);
215 }
216
217 static int config_output(AVFilterLink *outlink)
218 {
219 AVFilterContext *ctx = outlink->src;
220 MaskedThresholdContext *s = ctx->priv;
221 AVFilterLink *source = ctx->inputs[0];
222 AVFilterLink *ref = ctx->inputs[1];
223 FFFrameSyncIn *in;
224 int ret;
225
226 if (source->w != ref->w || source->h != ref->h) {
227 av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
228 "(size %dx%d) do not match the corresponding "
229 "second input link %s parameters (%dx%d)\n",
230 ctx->input_pads[0].name, source->w, source->h,
231 ctx->input_pads[1].name, ref->w, ref->h);
232 return AVERROR(EINVAL);
233 }
234
235 outlink->w = source->w;
236 outlink->h = source->h;
237 outlink->sample_aspect_ratio = source->sample_aspect_ratio;
238 outlink->frame_rate = source->frame_rate;
239
240 if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
241 return ret;
242
243 in = s->fs.in;
244 in[0].time_base = source->time_base;
245 in[1].time_base = ref->time_base;
246 in[0].sync = 1;
247 in[0].before = EXT_STOP;
248 in[0].after = EXT_INFINITY;
249 in[1].sync = 1;
250 in[1].before = EXT_STOP;
251 in[1].after = EXT_INFINITY;
252 s->fs.opaque = s;
253 s->fs.on_event = process_frame;
254
255 ret = ff_framesync_configure(&s->fs);
256 outlink->time_base = s->fs.time_base;
257
258 return ret;
259 }
260
261 static int activate(AVFilterContext *ctx)
262 {
263 MaskedThresholdContext *s = ctx->priv;
264 return ff_framesync_activate(&s->fs);
265 }
266
267 static av_cold void uninit(AVFilterContext *ctx)
268 {
269 MaskedThresholdContext *s = ctx->priv;
270
271 ff_framesync_uninit(&s->fs);
272 }
273
274 static const AVFilterPad maskedthreshold_inputs[] = {
275 {
276 .name = "source",
277 .type = AVMEDIA_TYPE_VIDEO,
278 .config_props = config_input,
279 },
280 {
281 .name = "reference",
282 .type = AVMEDIA_TYPE_VIDEO,
283 },
284 };
285
286 static const AVFilterPad maskedthreshold_outputs[] = {
287 {
288 .name = "default",
289 .type = AVMEDIA_TYPE_VIDEO,
290 .config_props = config_output,
291 },
292 };
293
294 AVFILTER_DEFINE_CLASS(maskedthreshold);
295
296 const AVFilter ff_vf_maskedthreshold = {
297 .name = "maskedthreshold",
298 .description = NULL_IF_CONFIG_SMALL("Pick pixels comparing absolute difference of two streams with threshold."),
299 .priv_class = &maskedthreshold_class,
300 .priv_size = sizeof(MaskedThresholdContext),
301 .uninit = uninit,
302 .activate = activate,
303 FILTER_INPUTS(maskedthreshold_inputs),
304 FILTER_OUTPUTS(maskedthreshold_outputs),
305 FILTER_PIXFMTS_ARRAY(pix_fmts),
306 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
307 .process_command = ff_filter_process_command,
308 };
309