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 /**
22 * @file
23 * threshold video filter
24 */
25
26 #include "libavutil/imgutils.h"
27 #include "libavutil/internal.h"
28 #include "libavutil/opt.h"
29 #include "libavutil/pixdesc.h"
30 #include "avfilter.h"
31 #include "framesync.h"
32 #include "internal.h"
33 #include "video.h"
34 #include "threshold.h"
35 #include "vf_threshold_init.h"
36
37 #define OFFSET(x) offsetof(ThresholdContext, x)
38 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
39
40 static const AVOption threshold_options[] = {
41 { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS},
42 { NULL }
43 };
44
45 AVFILTER_DEFINE_CLASS(threshold);
46
47 static const enum AVPixelFormat pix_fmts[] = {
48 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
49 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
50 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
51 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
52 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
53 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
54 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUV444P10,
55 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV440P12, AV_PIX_FMT_YUV444P12,
56 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
57 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
58 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
59 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
60 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
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_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12 , AV_PIX_FMT_GBRAP16,
64 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10,
65 AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
66 AV_PIX_FMT_NONE
67 };
68
69 typedef struct ThreadData {
70 AVFrame *in;
71 AVFrame *threshold;
72 AVFrame *min;
73 AVFrame *max;
74 AVFrame *out;
75 } ThreadData;
76
filter_slice(AVFilterContext * ctx,void * arg,int jobnr,int nb_jobs)77 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
78 {
79 ThresholdContext *s = ctx->priv;
80 ThreadData *td = arg;
81 AVFrame *min = td->min;
82 AVFrame *max = td->max;
83 AVFrame *threshold = td->threshold;
84 AVFrame *in = td->in;
85 AVFrame *out = td->out;
86
87 for (int p = 0; p < s->nb_planes; p++) {
88 const int h = s->height[p];
89 const int slice_start = (h * jobnr) / nb_jobs;
90 const int slice_end = (h * (jobnr+1)) / nb_jobs;
91
92 if (!(s->planes & (1 << p))) {
93 av_image_copy_plane(out->data[p] + slice_start * out->linesize[p],
94 out->linesize[p],
95 in->data[p] + slice_start * in->linesize[p],
96 in->linesize[p],
97 s->width[p] * s->bpc,
98 slice_end - slice_start);
99 continue;
100 }
101 s->threshold(in->data[p] + slice_start * in->linesize[p],
102 threshold->data[p] + slice_start * threshold->linesize[p],
103 min->data[p] + slice_start * min->linesize[p],
104 max->data[p] + slice_start * max->linesize[p],
105 out->data[p] + slice_start * out->linesize[p],
106 in->linesize[p], threshold->linesize[p],
107 min->linesize[p], max->linesize[p],
108 out->linesize[p],
109 s->width[p], slice_end - slice_start);
110 }
111
112 return 0;
113 }
114
process_frame(FFFrameSync * fs)115 static int process_frame(FFFrameSync *fs)
116 {
117 AVFilterContext *ctx = fs->parent;
118 ThresholdContext *s = fs->opaque;
119 AVFilterLink *outlink = ctx->outputs[0];
120 AVFrame *out, *in, *threshold, *min, *max;
121 ThreadData td;
122 int ret;
123
124 if ((ret = ff_framesync_get_frame(&s->fs, 0, &in, 0)) < 0 ||
125 (ret = ff_framesync_get_frame(&s->fs, 1, &threshold, 0)) < 0 ||
126 (ret = ff_framesync_get_frame(&s->fs, 2, &min, 0)) < 0 ||
127 (ret = ff_framesync_get_frame(&s->fs, 3, &max, 0)) < 0)
128 return ret;
129
130 if (ctx->is_disabled) {
131 out = av_frame_clone(in);
132 if (!out)
133 return AVERROR(ENOMEM);
134 } else {
135 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
136 if (!out)
137 return AVERROR(ENOMEM);
138 av_frame_copy_props(out, in);
139
140 td.out = out;
141 td.in = in;
142 td.threshold = threshold;
143 td.min = min;
144 td.max = max;
145 ff_filter_execute(ctx, filter_slice, &td, NULL,
146 FFMIN(s->height[2], ff_filter_get_nb_threads(ctx)));
147 }
148
149 out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
150
151 return ff_filter_frame(outlink, out);
152 }
153
config_input(AVFilterLink * inlink)154 static int config_input(AVFilterLink *inlink)
155 {
156 AVFilterContext *ctx = inlink->dst;
157 ThresholdContext *s = ctx->priv;
158 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
159 int vsub, hsub;
160
161 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
162
163 hsub = desc->log2_chroma_w;
164 vsub = desc->log2_chroma_h;
165 s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
166 s->height[0] = s->height[3] = inlink->h;
167 s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
168 s->width[0] = s->width[3] = inlink->w;
169 s->depth = desc->comp[0].depth;
170
171 ff_threshold_init(s);
172
173 return 0;
174 }
175
config_output(AVFilterLink * outlink)176 static int config_output(AVFilterLink *outlink)
177 {
178 AVFilterContext *ctx = outlink->src;
179 ThresholdContext *s = ctx->priv;
180 AVFilterLink *base = ctx->inputs[0];
181 AVFilterLink *threshold = ctx->inputs[1];
182 AVFilterLink *min = ctx->inputs[2];
183 AVFilterLink *max = ctx->inputs[3];
184 FFFrameSyncIn *in;
185 int ret;
186
187 if (base->w != threshold->w ||
188 base->h != threshold->h ||
189 base->w != min->w ||
190 base->h != min->h ||
191 base->w != max->w ||
192 base->h != max->h) {
193 av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
194 "(size %dx%d) do not match the corresponding "
195 "second input link %s parameters (%dx%d) "
196 "and/or third input link %s parameters (%dx%d) "
197 "and/or fourth input link %s parameters (%dx%d)\n",
198 ctx->input_pads[0].name, base->w, base->h,
199 ctx->input_pads[1].name, threshold->w, threshold->h,
200 ctx->input_pads[2].name, min->w, min->h,
201 ctx->input_pads[3].name, max->w, max->h);
202 return AVERROR(EINVAL);
203 }
204
205 outlink->w = base->w;
206 outlink->h = base->h;
207 outlink->sample_aspect_ratio = base->sample_aspect_ratio;
208 outlink->frame_rate = base->frame_rate;
209
210 if ((ret = ff_framesync_init(&s->fs, ctx, 4)) < 0)
211 return ret;
212
213 in = s->fs.in;
214 in[0].time_base = base->time_base;
215 in[1].time_base = threshold->time_base;
216 in[2].time_base = min->time_base;
217 in[3].time_base = max->time_base;
218 in[0].sync = 1;
219 in[0].before = EXT_STOP;
220 in[0].after = EXT_STOP;
221 in[1].sync = 1;
222 in[1].before = EXT_STOP;
223 in[1].after = EXT_STOP;
224 in[2].sync = 1;
225 in[2].before = EXT_STOP;
226 in[2].after = EXT_STOP;
227 in[3].sync = 1;
228 in[3].before = EXT_STOP;
229 in[3].after = EXT_STOP;
230 s->fs.opaque = s;
231 s->fs.on_event = process_frame;
232
233 ret = ff_framesync_configure(&s->fs);
234 outlink->time_base = s->fs.time_base;
235
236 return ret;
237 }
238
activate(AVFilterContext * ctx)239 static int activate(AVFilterContext *ctx)
240 {
241 ThresholdContext *s = ctx->priv;
242 return ff_framesync_activate(&s->fs);
243 }
244
uninit(AVFilterContext * ctx)245 static av_cold void uninit(AVFilterContext *ctx)
246 {
247 ThresholdContext *s = ctx->priv;
248
249 ff_framesync_uninit(&s->fs);
250 }
251
252 static const AVFilterPad inputs[] = {
253 {
254 .name = "default",
255 .type = AVMEDIA_TYPE_VIDEO,
256 .config_props = config_input,
257 },
258 {
259 .name = "threshold",
260 .type = AVMEDIA_TYPE_VIDEO,
261 },
262 {
263 .name = "min",
264 .type = AVMEDIA_TYPE_VIDEO,
265 },
266 {
267 .name = "max",
268 .type = AVMEDIA_TYPE_VIDEO,
269 },
270 };
271
272 static const AVFilterPad outputs[] = {
273 {
274 .name = "default",
275 .type = AVMEDIA_TYPE_VIDEO,
276 .config_props = config_output,
277 },
278 };
279
280 const AVFilter ff_vf_threshold = {
281 .name = "threshold",
282 .description = NULL_IF_CONFIG_SMALL("Threshold first video stream using other video streams."),
283 .priv_size = sizeof(ThresholdContext),
284 .priv_class = &threshold_class,
285 .uninit = uninit,
286 .activate = activate,
287 FILTER_INPUTS(inputs),
288 FILTER_OUTPUTS(outputs),
289 FILTER_PIXFMTS_ARRAY(pix_fmts),
290 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
291 .process_command = ff_filter_process_command,
292 };
293