| 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/mem.h" | ||
| 23 | #include "libavutil/opt.h" | ||
| 24 | #include "libavutil/pixdesc.h" | ||
| 25 | #include "avfilter.h" | ||
| 26 | #include "filters.h" | ||
| 27 | #include "video.h" | ||
| 28 | |||
| 29 | typedef struct DBlurContext { | ||
| 30 | const AVClass *class; | ||
| 31 | |||
| 32 | float angle; | ||
| 33 | float radius; | ||
| 34 | int planes; | ||
| 35 | |||
| 36 | float b0, b1, q, c, R3; | ||
| 37 | |||
| 38 | int depth; | ||
| 39 | int planewidth[4]; | ||
| 40 | int planeheight[4]; | ||
| 41 | float *buffer; | ||
| 42 | int nb_planes; | ||
| 43 | } DBlurContext; | ||
| 44 | |||
| 45 | #define OFFSET(x) offsetof(DBlurContext, x) | ||
| 46 | #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM | ||
| 47 | |||
| 48 | static const AVOption dblur_options[] = { | ||
| 49 | { "angle", "set angle", OFFSET(angle), AV_OPT_TYPE_FLOAT, {.dbl=45}, 0.0, 360, FLAGS }, | ||
| 50 | { "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_FLOAT, {.dbl=5}, 0, 8192, FLAGS }, | ||
| 51 | { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS }, | ||
| 52 | { NULL } | ||
| 53 | }; | ||
| 54 | |||
| 55 | AVFILTER_DEFINE_CLASS(dblur); | ||
| 56 | |||
| 57 | #define f(n, m) (dst[(n) * width + (m)]) | ||
| 58 | |||
| 59 | ✗ | static int filter_horizontally(AVFilterContext *ctx, int width, int height) | |
| 60 | { | ||
| 61 | ✗ | DBlurContext *s = ctx->priv; | |
| 62 | ✗ | const float b0 = s->b0; | |
| 63 | ✗ | const float b1 = s->b1; | |
| 64 | ✗ | const float q = s->q; | |
| 65 | ✗ | const float c = s->c; | |
| 66 | ✗ | float *dst = s->buffer; | |
| 67 | float g; | ||
| 68 | |||
| 69 | ✗ | if (s->R3 > 0) { | |
| 70 | ✗ | for (int y = 1; y < height; y++) { | |
| 71 | ✗ | g = q * f(y, 0) + c * f(y, 0); | |
| 72 | ✗ | for (int x = 0; x < width; x++) { | |
| 73 | ✗ | f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g; | |
| 74 | ✗ | g = q * f(y, x) + c * f(y - 1, x); | |
| 75 | } | ||
| 76 | } | ||
| 77 | |||
| 78 | ✗ | for (int y = height - 2; y >= 0; y--) { | |
| 79 | ✗ | g = q * f(y, width - 1) + c * f(y, width - 1); | |
| 80 | ✗ | for (int x = width - 1; x >= 0; x--) { | |
| 81 | ✗ | f(y, x) = b0 * f(y, x) + b1 * f(y + 1, x) + g; | |
| 82 | ✗ | g = q * f(y, x) + c * f(y + 1, x); | |
| 83 | } | ||
| 84 | } | ||
| 85 | } else { | ||
| 86 | ✗ | for (int y = 1; y < height; y++) { | |
| 87 | ✗ | g = q * f(y, width - 1) + c * f(y, width - 1); | |
| 88 | ✗ | for (int x = width - 1; x >= 0; x--) { | |
| 89 | ✗ | f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g; | |
| 90 | ✗ | g = q * f(y, x) + c * f(y - 1, x); | |
| 91 | } | ||
| 92 | } | ||
| 93 | |||
| 94 | ✗ | for (int y = height - 2; y >= 0; y--) { | |
| 95 | ✗ | g = q * f(y, 0) + c * f(y, 0); | |
| 96 | ✗ | for (int x = 0; x < width; x++) { | |
| 97 | ✗ | f(y, x) = b0 * f(y, x) + b1 * f(y + 1, x) + g; | |
| 98 | ✗ | g = q * f(y, x) + c * f(y + 1, x); | |
| 99 | } | ||
| 100 | } | ||
| 101 | } | ||
| 102 | |||
| 103 | ✗ | return 0; | |
| 104 | } | ||
| 105 | |||
| 106 | ✗ | static void diriir2d(AVFilterContext *ctx, int plane) | |
| 107 | { | ||
| 108 | ✗ | DBlurContext *s = ctx->priv; | |
| 109 | ✗ | const int width = s->planewidth[plane]; | |
| 110 | ✗ | const int height = s->planeheight[plane]; | |
| 111 | |||
| 112 | ✗ | filter_horizontally(ctx, width, height); | |
| 113 | ✗ | } | |
| 114 | |||
| 115 | static const enum AVPixelFormat pix_fmts[] = { | ||
| 116 | AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, | ||
| 117 | AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, | ||
| 118 | AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, | ||
| 119 | AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, | ||
| 120 | AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, | ||
| 121 | AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, | ||
| 122 | AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, | ||
| 123 | AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12, | ||
| 124 | AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, | ||
| 125 | AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, | ||
| 126 | AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, | ||
| 127 | AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, | ||
| 128 | AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12, | ||
| 129 | AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, | ||
| 130 | AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, | ||
| 131 | AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16, | ||
| 132 | AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, | ||
| 133 | AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16, | ||
| 134 | AV_PIX_FMT_GRAYF32, AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32, | ||
| 135 | AV_PIX_FMT_NONE | ||
| 136 | }; | ||
| 137 | |||
| 138 | ✗ | static av_cold void uninit(AVFilterContext *ctx) | |
| 139 | { | ||
| 140 | ✗ | DBlurContext *s = ctx->priv; | |
| 141 | |||
| 142 | ✗ | av_freep(&s->buffer); | |
| 143 | ✗ | } | |
| 144 | |||
| 145 | ✗ | static int config_input(AVFilterLink *inlink) | |
| 146 | { | ||
| 147 | ✗ | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); | |
| 148 | ✗ | DBlurContext *s = inlink->dst->priv; | |
| 149 | |||
| 150 | ✗ | uninit(inlink->dst); | |
| 151 | |||
| 152 | ✗ | s->depth = desc->comp[0].depth; | |
| 153 | ✗ | s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); | |
| 154 | ✗ | s->planewidth[0] = s->planewidth[3] = inlink->w; | |
| 155 | ✗ | s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); | |
| 156 | ✗ | s->planeheight[0] = s->planeheight[3] = inlink->h; | |
| 157 | |||
| 158 | ✗ | s->nb_planes = av_pix_fmt_count_planes(inlink->format); | |
| 159 | |||
| 160 | ✗ | s->buffer = av_malloc_array(FFALIGN(inlink->w, 16), FFALIGN(inlink->h, 16) * sizeof(*s->buffer)); | |
| 161 | ✗ | if (!s->buffer) | |
| 162 | ✗ | return AVERROR(ENOMEM); | |
| 163 | |||
| 164 | ✗ | return 0; | |
| 165 | } | ||
| 166 | |||
| 167 | ✗ | static void set_params(DBlurContext *s, float angle, float r) | |
| 168 | { | ||
| 169 | float mu, nu, R1, R2, w1, w2; | ||
| 170 | float a0, a1, a2, a3; | ||
| 171 | |||
| 172 | ✗ | angle = angle * M_PI / 180.f; | |
| 173 | |||
| 174 | ✗ | mu = cosf(angle); | |
| 175 | ✗ | nu = sinf(angle); | |
| 176 | ✗ | R1 = (mu * r) * (mu * r); | |
| 177 | ✗ | R2 = (nu * r) * (nu * r); | |
| 178 | ✗ | s->R3 = mu * nu * r * r; | |
| 179 | ✗ | w1 = sqrtf(0.25f + R1); | |
| 180 | ✗ | w2 = sqrtf(0.25f + R2); | |
| 181 | ✗ | a0 = (w1 + 0.5f) * (w2 + 0.5f) - fabsf(s->R3); | |
| 182 | ✗ | a1 = 0.5f + w2 - a0; | |
| 183 | ✗ | a2 = 0.5f + w1 - a0; | |
| 184 | ✗ | a3 = a0 - w1 - w2; | |
| 185 | ✗ | s->b0 = 1.f / a0; | |
| 186 | ✗ | s->b1 = -a2 / a0; | |
| 187 | ✗ | s->q = -a1 / a0; | |
| 188 | ✗ | s->c = -a3 / a0; | |
| 189 | ✗ | } | |
| 190 | |||
| 191 | ✗ | static int filter_frame(AVFilterLink *inlink, AVFrame *in) | |
| 192 | { | ||
| 193 | ✗ | AVFilterContext *ctx = inlink->dst; | |
| 194 | ✗ | DBlurContext *s = ctx->priv; | |
| 195 | ✗ | AVFilterLink *outlink = ctx->outputs[0]; | |
| 196 | AVFrame *out; | ||
| 197 | int plane; | ||
| 198 | |||
| 199 | ✗ | set_params(s, s->angle, s->radius); | |
| 200 | |||
| 201 | ✗ | if (av_frame_is_writable(in)) { | |
| 202 | ✗ | out = in; | |
| 203 | } else { | ||
| 204 | ✗ | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); | |
| 205 | ✗ | if (!out) { | |
| 206 | ✗ | av_frame_free(&in); | |
| 207 | ✗ | return AVERROR(ENOMEM); | |
| 208 | } | ||
| 209 | ✗ | av_frame_copy_props(out, in); | |
| 210 | } | ||
| 211 | |||
| 212 | ✗ | for (plane = 0; plane < s->nb_planes; plane++) { | |
| 213 | ✗ | const int height = s->planeheight[plane]; | |
| 214 | ✗ | const int width = s->planewidth[plane]; | |
| 215 | ✗ | float *bptr = s->buffer; | |
| 216 | ✗ | const uint8_t *src = in->data[plane]; | |
| 217 | ✗ | const uint16_t *src16 = (const uint16_t *)in->data[plane]; | |
| 218 | ✗ | const float *src32 = (const float *)in->data[plane]; | |
| 219 | ✗ | uint8_t *dst = out->data[plane]; | |
| 220 | ✗ | uint16_t *dst16 = (uint16_t *)out->data[plane]; | |
| 221 | ✗ | float *dst32 = (float *)out->data[plane]; | |
| 222 | int y, x; | ||
| 223 | |||
| 224 | ✗ | if (!(s->planes & (1 << plane))) { | |
| 225 | ✗ | if (out != in) | |
| 226 | ✗ | av_image_copy_plane(out->data[plane], out->linesize[plane], | |
| 227 | ✗ | in->data[plane], in->linesize[plane], | |
| 228 | ✗ | width * ((s->depth + 7) / 8), height); | |
| 229 | ✗ | continue; | |
| 230 | } | ||
| 231 | |||
| 232 | ✗ | if (s->depth == 8) { | |
| 233 | ✗ | for (y = 0; y < height; y++) { | |
| 234 | ✗ | for (x = 0; x < width; x++) { | |
| 235 | ✗ | bptr[x] = src[x]; | |
| 236 | } | ||
| 237 | ✗ | bptr += width; | |
| 238 | ✗ | src += in->linesize[plane]; | |
| 239 | } | ||
| 240 | ✗ | } else if (s->depth <= 16) { | |
| 241 | ✗ | for (y = 0; y < height; y++) { | |
| 242 | ✗ | for (x = 0; x < width; x++) { | |
| 243 | ✗ | bptr[x] = src16[x]; | |
| 244 | } | ||
| 245 | ✗ | bptr += width; | |
| 246 | ✗ | src16 += in->linesize[plane] / 2; | |
| 247 | } | ||
| 248 | } else { | ||
| 249 | ✗ | for (y = 0; y < height; y++) { | |
| 250 | ✗ | for (x = 0; x < width; x++) { | |
| 251 | ✗ | memcpy(bptr, src32, width * sizeof(float)); | |
| 252 | } | ||
| 253 | ✗ | bptr += width; | |
| 254 | ✗ | src32 += in->linesize[plane] / 4; | |
| 255 | } | ||
| 256 | } | ||
| 257 | |||
| 258 | ✗ | diriir2d(ctx, plane); | |
| 259 | |||
| 260 | ✗ | bptr = s->buffer; | |
| 261 | ✗ | if (s->depth == 8) { | |
| 262 | ✗ | for (y = 0; y < height; y++) { | |
| 263 | ✗ | for (x = 0; x < width; x++) { | |
| 264 | ✗ | dst[x] = av_clip_uint8(lrintf(bptr[x])); | |
| 265 | } | ||
| 266 | ✗ | bptr += width; | |
| 267 | ✗ | dst += out->linesize[plane]; | |
| 268 | } | ||
| 269 | ✗ | } else if (s->depth <= 16) { | |
| 270 | ✗ | for (y = 0; y < height; y++) { | |
| 271 | ✗ | for (x = 0; x < width; x++) { | |
| 272 | ✗ | dst16[x] = av_clip_uintp2_c(lrintf(bptr[x]), s->depth); | |
| 273 | } | ||
| 274 | ✗ | bptr += width; | |
| 275 | ✗ | dst16 += out->linesize[plane] / 2; | |
| 276 | } | ||
| 277 | } else { | ||
| 278 | ✗ | for (y = 0; y < height; y++) { | |
| 279 | ✗ | for (x = 0; x < width; x++) { | |
| 280 | ✗ | memcpy(dst32, bptr, width * sizeof(float)); | |
| 281 | } | ||
| 282 | ✗ | bptr += width; | |
| 283 | ✗ | dst32 += out->linesize[plane] / 4; | |
| 284 | } | ||
| 285 | } | ||
| 286 | } | ||
| 287 | |||
| 288 | ✗ | if (out != in) | |
| 289 | ✗ | av_frame_free(&in); | |
| 290 | ✗ | return ff_filter_frame(outlink, out); | |
| 291 | } | ||
| 292 | |||
| 293 | static const AVFilterPad dblur_inputs[] = { | ||
| 294 | { | ||
| 295 | .name = "default", | ||
| 296 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 297 | .config_props = config_input, | ||
| 298 | .filter_frame = filter_frame, | ||
| 299 | }, | ||
| 300 | }; | ||
| 301 | |||
| 302 | const AVFilter ff_vf_dblur = { | ||
| 303 | .name = "dblur", | ||
| 304 | .description = NULL_IF_CONFIG_SMALL("Apply Directional Blur filter."), | ||
| 305 | .priv_size = sizeof(DBlurContext), | ||
| 306 | .priv_class = &dblur_class, | ||
| 307 | .uninit = uninit, | ||
| 308 | FILTER_INPUTS(dblur_inputs), | ||
| 309 | FILTER_OUTPUTS(ff_video_default_filterpad), | ||
| 310 | FILTER_PIXFMTS_ARRAY(pix_fmts), | ||
| 311 | .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, | ||
| 312 | .process_command = ff_filter_process_command, | ||
| 313 | }; | ||
| 314 |