FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_amplify.c
Date: 2024-04-19 07:31:02
Exec Total Coverage
Lines: 0 71 0.0%
Functions: 0 5 0.0%
Branches: 0 66 0.0%

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1 /*
2 * Copyright (c) 2018 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/mem.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
25
26 #include "avfilter.h"
27 #include "internal.h"
28 #include "video.h"
29
30 typedef struct AmplifyContext {
31 const AVClass *class;
32 const AVPixFmtDescriptor *desc;
33 int radius;
34 float factor;
35 float threshold;
36 float tolerance;
37 int planes;
38
39 float llimit;
40 float hlimit;
41 int nb_inputs;
42 int nb_frames;
43
44 int depth;
45 int nb_planes;
46 int linesize[4];
47 int height[4];
48
49 AVFrame **frames;
50 } AmplifyContext;
51
52 static const enum AVPixelFormat pixel_fmts[] = {
53 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
54 AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
55 AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAYF32,
56 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
57 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
58 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
59 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
60 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
61 AV_PIX_FMT_YUVJ411P,
62 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
63 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
64 AV_PIX_FMT_YUV440P10,
65 AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
66 AV_PIX_FMT_YUV440P12,
67 AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
68 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
69 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
70 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
71 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
72 AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
73 AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
74 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
75 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
76 AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
77 AV_PIX_FMT_NONE
78 };
79
80 static av_cold int init(AVFilterContext *ctx)
81 {
82 AmplifyContext *s = ctx->priv;
83
84 s->nb_inputs = s->radius * 2 + 1;
85
86 s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
87 if (!s->frames)
88 return AVERROR(ENOMEM);
89
90 return 0;
91 }
92
93 typedef struct ThreadData {
94 AVFrame **in, *out;
95 } ThreadData;
96
97 #define AMPLIFY_SLICE(type, stype, clip) \
98 const stype limit[2] = { s->llimit, s->hlimit }; \
99 \
100 for (int p = 0; p < s->nb_planes; p++) { \
101 const int slice_start = (s->height[p] * jobnr) / nb_jobs; \
102 const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs; \
103 type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
104 ptrdiff_t dst_linesize = out->linesize[p] / sizeof(type); \
105 \
106 if (!((1 << p) & s->planes)) { \
107 av_image_copy_plane((uint8_t *)dst, out->linesize[p], \
108 in[radius]->data[p] + slice_start * in[radius]->linesize[p], \
109 in[radius]->linesize[p], \
110 s->linesize[p], slice_end - slice_start); \
111 continue; \
112 } \
113 \
114 for (int y = slice_start; y < slice_end; y++) { \
115 for (int x = 0; x < s->linesize[p] / sizeof(type); x++) { \
116 stype src = *(type *)(in[radius]->data[p] + y * in[radius]->linesize[p] + x * sizeof(type));\
117 float diff, abs_diff, avg; \
118 stype sum = 0; \
119 \
120 for (int i = 0; i < nb_inputs; i++) { \
121 sum += *(type *)(in[i]->data[p] + y * in[i]->linesize[p] + x * sizeof(type));\
122 } \
123 \
124 avg = sum * scale; \
125 diff = src - avg; \
126 abs_diff = fabsf(diff); \
127 \
128 if (abs_diff < threshold && abs_diff > tolerance) { \
129 float amp = copysignf(fminf(abs_diff * factor, limit[diff >= 0]), diff); \
130 dst[x] = clip(src + amp, depth); \
131 } else { \
132 dst[x] = src; \
133 } \
134 } \
135 \
136 dst += dst_linesize; \
137 } \
138 }
139
140 #define CLIP8(x, depth) av_clip_uint8(lrintf(x))
141 #define CLIP16(x, depth) av_clip_uintp2_c(lrintf(x), depth)
142 #define NOP(x, depth) (x)
143
144 static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
145 {
146 AmplifyContext *s = ctx->priv;
147 ThreadData *td = arg;
148 AVFrame **in = td->in;
149 AVFrame *out = td->out;
150 const int radius = s->radius;
151 const int nb_inputs = s->nb_inputs;
152 const float threshold = s->threshold;
153 const float tolerance = s->tolerance;
154 const float scale = 1.f / nb_inputs;
155 const float factor = s->factor;
156 const int depth = s->depth;
157
158 if (s->depth <= 8) {
159 AMPLIFY_SLICE(uint8_t, int, CLIP8)
160 } else if (s->depth <= 16) {
161 AMPLIFY_SLICE(uint16_t, int, CLIP16)
162 } else {
163 AMPLIFY_SLICE(float, float, NOP)
164 }
165
166 return 0;
167 }
168
169 static int config_output(AVFilterLink *outlink)
170 {
171 AVFilterContext *ctx = outlink->src;
172 AmplifyContext *s = ctx->priv;
173 AVFilterLink *inlink = ctx->inputs[0];
174 int ret;
175
176 s->desc = av_pix_fmt_desc_get(outlink->format);
177 if (!s->desc)
178 return AVERROR_BUG;
179 s->nb_planes = av_pix_fmt_count_planes(outlink->format);
180 s->depth = s->desc->comp[0].depth;
181
182 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
183 return ret;
184
185 s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
186 s->height[0] = s->height[3] = inlink->h;
187
188 return 0;
189 }
190
191 static av_cold void uninit(AVFilterContext *ctx)
192 {
193 AmplifyContext *s = ctx->priv;
194 int i;
195
196 if (s->frames) {
197 for (i = 0; i < s->nb_frames; i++)
198 av_frame_free(&s->frames[i]);
199 }
200 av_freep(&s->frames);
201 }
202
203 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
204 {
205 AVFilterContext *ctx = inlink->dst;
206 AVFilterLink *outlink = ctx->outputs[0];
207 AmplifyContext *s = ctx->priv;
208 ThreadData td;
209 AVFrame *out;
210
211 if (s->nb_frames < s->nb_inputs) {
212 s->frames[s->nb_frames] = in;
213 s->nb_frames++;
214 return 0;
215 } else {
216 av_frame_free(&s->frames[0]);
217 memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
218 s->frames[s->nb_inputs - 1] = in;
219 }
220
221 if (!ctx->is_disabled) {
222 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
223 if (!out)
224 return AVERROR(ENOMEM);
225 av_frame_copy_props(out, s->frames[0]);
226
227 td.out = out;
228 td.in = s->frames;
229 ff_filter_execute(ctx, amplify_frame, &td, NULL,
230 FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
231 } else {
232 out = av_frame_clone(s->frames[s->radius]);
233 if (!out)
234 return AVERROR(ENOMEM);
235 out->pts = s->frames[0]->pts;
236 }
237
238 return ff_filter_frame(outlink, out);
239 }
240
241 #define OFFSET(x) offsetof(AmplifyContext, x)
242 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
243 #define VFT AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
244
245 static const AVOption amplify_options[] = {
246 { "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=2}, 1, 63, .flags = FLAGS },
247 { "factor", "set factor", OFFSET(factor), AV_OPT_TYPE_FLOAT, {.dbl=2}, 0, UINT16_MAX, .flags = VFT },
248 { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=10}, 0, UINT16_MAX, .flags = VFT },
249 { "tolerance", "set tolerance", OFFSET(tolerance), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, UINT16_MAX, .flags = VFT },
250 { "low", "set low limit for amplification", OFFSET(llimit), AV_OPT_TYPE_FLOAT, {.dbl=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
251 { "high", "set high limit for amplification", OFFSET(hlimit), AV_OPT_TYPE_FLOAT, {.dbl=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
252 { "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=7}, 0, 15, VFT },
253 { NULL },
254 };
255
256 static const AVFilterPad inputs[] = {
257 {
258 .name = "default",
259 .type = AVMEDIA_TYPE_VIDEO,
260 .filter_frame = filter_frame,
261 },
262 };
263
264 static const AVFilterPad outputs[] = {
265 {
266 .name = "default",
267 .type = AVMEDIA_TYPE_VIDEO,
268 .config_props = config_output,
269 },
270 };
271
272 AVFILTER_DEFINE_CLASS(amplify);
273
274 const AVFilter ff_vf_amplify = {
275 .name = "amplify",
276 .description = NULL_IF_CONFIG_SMALL("Amplify changes between successive video frames."),
277 .priv_size = sizeof(AmplifyContext),
278 .priv_class = &amplify_class,
279 FILTER_OUTPUTS(outputs),
280 FILTER_INPUTS(inputs),
281 FILTER_PIXFMTS_ARRAY(pixel_fmts),
282 .init = init,
283 .uninit = uninit,
284 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
285 .process_command = ff_filter_process_command,
286 };
287