FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_dblur.c
Date: 2023-12-07 21:54:23
Exec Total Coverage
Lines: 0 138 0.0%
Functions: 0 6 0.0%
Branches: 0 64 0.0%
Line Branch Exec Source
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/opt.h"
23 #include "libavutil/pixdesc.h"
24 #include "avfilter.h"
25 #include "internal.h"
26 #include "video.h"
27
28 typedef struct DBlurContext {
29 const AVClass *class;
30
31 float angle;
32 float radius;
33 int planes;
34
35 float b0, b1, q, c, R3;
36
37 int depth;
38 int planewidth[4];
39 int planeheight[4];
40 float *buffer;
41 int nb_planes;
42 } DBlurContext;
43
44 #define OFFSET(x) offsetof(DBlurContext, x)
45 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
46
47 static const AVOption dblur_options[] = {
48 { "angle", "set angle", OFFSET(angle), AV_OPT_TYPE_FLOAT, {.dbl=45}, 0.0, 360, FLAGS },
49 { "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_FLOAT, {.dbl=5}, 0, 8192, FLAGS },
50 { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
51 { NULL }
52 };
53
54 AVFILTER_DEFINE_CLASS(dblur);
55
56 #define f(n, m) (dst[(n) * width + (m)])
57
58 ✗ static int filter_horizontally(AVFilterContext *ctx, int width, int height)
59 {
60 ✗ DBlurContext *s = ctx->priv;
61 ✗ const float b0 = s->b0;
62 ✗ const float b1 = s->b1;
63 ✗ const float q = s->q;
64 ✗ const float c = s->c;
65 ✗ float *dst = s->buffer;
66 float g;
67
68 ✗ if (s->R3 > 0) {
69 ✗ for (int y = 1; y < height; y++) {
70 ✗ g = q * f(y, 0) + c * f(y, 0);
71 ✗ for (int x = 0; x < width; x++) {
72 ✗ f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g;
73 ✗ g = q * f(y, x) + c * f(y - 1, x);
74 }
75 }
76
77 ✗ for (int y = height - 2; y >= 0; y--) {
78 ✗ g = q * f(y, width - 1) + c * f(y, width - 1);
79 ✗ for (int x = width - 1; x >= 0; x--) {
80 ✗ f(y, x) = b0 * f(y, x) + b1 * f(y + 1, x) + g;
81 ✗ g = q * f(y, x) + c * f(y + 1, x);
82 }
83 }
84 } else {
85 ✗ for (int y = 1; y < height; y++) {
86 ✗ g = q * f(y, width - 1) + c * f(y, width - 1);
87 ✗ for (int x = width - 1; x >= 0; x--) {
88 ✗ f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g;
89 ✗ g = q * f(y, x) + c * f(y - 1, x);
90 }
91 }
92
93 ✗ for (int y = height - 2; y >= 0; y--) {
94 ✗ g = q * f(y, 0) + c * f(y, 0);
95 ✗ for (int x = 0; x < width; x++) {
96 ✗ f(y, x) = b0 * f(y, x) + b1 * f(y + 1, x) + g;
97 ✗ g = q * f(y, x) + c * f(y + 1, x);
98 }
99 }
100 }
101
102 ✗ return 0;
103 }
104
105 ✗ static void diriir2d(AVFilterContext *ctx, int plane)
106 {
107 ✗ DBlurContext *s = ctx->priv;
108 ✗ const int width = s->planewidth[plane];
109 ✗ const int height = s->planeheight[plane];
110
111 ✗ filter_horizontally(ctx, width, height);
112 ✗ }
113
114 static const enum AVPixelFormat pix_fmts[] = {
115 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
116 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
117 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
118 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
119 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
120 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
121 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
122 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
123 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
124 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
125 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
126 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
127 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
128 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
129 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
130 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
131 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
132 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
133 AV_PIX_FMT_GRAYF32, AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
134 AV_PIX_FMT_NONE
135 };
136
137 ✗ static av_cold void uninit(AVFilterContext *ctx)
138 {
139 ✗ DBlurContext *s = ctx->priv;
140
141 ✗ av_freep(&s->buffer);
142 ✗ }
143
144 ✗ static int config_input(AVFilterLink *inlink)
145 {
146 ✗ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
147 ✗ DBlurContext *s = inlink->dst->priv;
148
149 ✗ uninit(inlink->dst);
150
151 ✗ s->depth = desc->comp[0].depth;
152 ✗ s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
153 ✗ s->planewidth[0] = s->planewidth[3] = inlink->w;
154 ✗ s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
155 ✗ s->planeheight[0] = s->planeheight[3] = inlink->h;
156
157 ✗ s->nb_planes = av_pix_fmt_count_planes(inlink->format);
158
159 ✗ s->buffer = av_malloc_array(FFALIGN(inlink->w, 16), FFALIGN(inlink->h, 16) * sizeof(*s->buffer));
160 ✗ if (!s->buffer)
161 ✗ return AVERROR(ENOMEM);
162
163 ✗ return 0;
164 }
165
166 ✗ static void set_params(DBlurContext *s, float angle, float r)
167 {
168 float mu, nu, R1, R2, w1, w2;
169 float a0, a1, a2, a3;
170
171 ✗ angle = angle * M_PI / 180.f;
172
173 ✗ mu = cosf(angle);
174 ✗ nu = sinf(angle);
175 ✗ R1 = (mu * r) * (mu * r);
176 ✗ R2 = (nu * r) * (nu * r);
177 ✗ s->R3 = mu * nu * r * r;
178 ✗ w1 = sqrtf(0.25f + R1);
179 ✗ w2 = sqrtf(0.25f + R2);
180 ✗ a0 = (w1 + 0.5f) * (w2 + 0.5f) - fabsf(s->R3);
181 ✗ a1 = 0.5f + w2 - a0;
182 ✗ a2 = 0.5f + w1 - a0;
183 ✗ a3 = a0 - w1 - w2;
184 ✗ s->b0 = 1.f / a0;
185 ✗ s->b1 = -a2 / a0;
186 ✗ s->q = -a1 / a0;
187 ✗ s->c = -a3 / a0;
188 ✗ }
189
190 ✗ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
191 {
192 ✗ AVFilterContext *ctx = inlink->dst;
193 ✗ DBlurContext *s = ctx->priv;
194 ✗ AVFilterLink *outlink = ctx->outputs[0];
195 AVFrame *out;
196 int plane;
197
198 ✗ set_params(s, s->angle, s->radius);
199
200 ✗ if (av_frame_is_writable(in)) {
201 ✗ out = in;
202 } else {
203 ✗ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
204 ✗ if (!out) {
205 ✗ av_frame_free(&in);
206 ✗ return AVERROR(ENOMEM);
207 }
208 ✗ av_frame_copy_props(out, in);
209 }
210
211 ✗ for (plane = 0; plane < s->nb_planes; plane++) {
212 ✗ const int height = s->planeheight[plane];
213 ✗ const int width = s->planewidth[plane];
214 ✗ float *bptr = s->buffer;
215 ✗ const uint8_t *src = in->data[plane];
216 ✗ const uint16_t *src16 = (const uint16_t *)in->data[plane];
217 ✗ const float *src32 = (const float *)in->data[plane];
218 ✗ uint8_t *dst = out->data[plane];
219 ✗ uint16_t *dst16 = (uint16_t *)out->data[plane];
220 ✗ float *dst32 = (float *)out->data[plane];
221 int y, x;
222
223 ✗ if (!(s->planes & (1 << plane))) {
224 ✗ if (out != in)
225 ✗ av_image_copy_plane(out->data[plane], out->linesize[plane],
226 ✗ in->data[plane], in->linesize[plane],
227 ✗ width * ((s->depth + 7) / 8), height);
228 ✗ continue;
229 }
230
231 ✗ if (s->depth == 8) {
232 ✗ for (y = 0; y < height; y++) {
233 ✗ for (x = 0; x < width; x++) {
234 ✗ bptr[x] = src[x];
235 }
236 ✗ bptr += width;
237 ✗ src += in->linesize[plane];
238 }
239 ✗ } else if (s->depth <= 16) {
240 ✗ for (y = 0; y < height; y++) {
241 ✗ for (x = 0; x < width; x++) {
242 ✗ bptr[x] = src16[x];
243 }
244 ✗ bptr += width;
245 ✗ src16 += in->linesize[plane] / 2;
246 }
247 } else {
248 ✗ for (y = 0; y < height; y++) {
249 ✗ for (x = 0; x < width; x++) {
250 ✗ memcpy(bptr, src32, width * sizeof(float));
251 }
252 ✗ bptr += width;
253 ✗ src32 += in->linesize[plane] / 4;
254 }
255 }
256
257 ✗ diriir2d(ctx, plane);
258
259 ✗ bptr = s->buffer;
260 ✗ if (s->depth == 8) {
261 ✗ for (y = 0; y < height; y++) {
262 ✗ for (x = 0; x < width; x++) {
263 ✗ dst[x] = av_clip_uint8(lrintf(bptr[x]));
264 }
265 ✗ bptr += width;
266 ✗ dst += out->linesize[plane];
267 }
268 ✗ } else if (s->depth <= 16) {
269 ✗ for (y = 0; y < height; y++) {
270 ✗ for (x = 0; x < width; x++) {
271 ✗ dst16[x] = av_clip_uintp2_c(lrintf(bptr[x]), s->depth);
272 }
273 ✗ bptr += width;
274 ✗ dst16 += out->linesize[plane] / 2;
275 }
276 } else {
277 ✗ for (y = 0; y < height; y++) {
278 ✗ for (x = 0; x < width; x++) {
279 ✗ memcpy(dst32, bptr, width * sizeof(float));
280 }
281 ✗ bptr += width;
282 ✗ dst32 += out->linesize[plane] / 4;
283 }
284 }
285 }
286
287 ✗ if (out != in)
288 ✗ av_frame_free(&in);
289 ✗ return ff_filter_frame(outlink, out);
290 }
291
292 static const AVFilterPad dblur_inputs[] = {
293 {
294 .name = "default",
295 .type = AVMEDIA_TYPE_VIDEO,
296 .config_props = config_input,
297 .filter_frame = filter_frame,
298 },
299 };
300
301 const AVFilter ff_vf_dblur = {
302 .name = "dblur",
303 .description = NULL_IF_CONFIG_SMALL("Apply Directional Blur filter."),
304 .priv_size = sizeof(DBlurContext),
305 .priv_class = &dblur_class,
306 .uninit = uninit,
307 FILTER_INPUTS(dblur_inputs),
308 FILTER_OUTPUTS(ff_video_default_filterpad),
309 FILTER_PIXFMTS_ARRAY(pix_fmts),
310 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
311 .process_command = ff_filter_process_command,
312 };
313