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1/*
2 * Copyright (c) 2003 Daniel Moreno <comac AT comac DOT darktech DOT org>
3 * Copyright (c) 2010 Baptiste Coudurier
4 * Copyright (c) 2012 Loren Merritt
5 *
6 * This file is part of FFmpeg, ported from MPlayer.
7 *
8 * FFmpeg is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 */
22
23/**
24 * @file
25 * high quality 3d video denoiser, ported from MPlayer
26 * libmpcodecs/vf_hqdn3d.c.
27 */
28
29#include <float.h>
30
31#include "config.h"
32#include "libavutil/attributes.h"
33#include "libavutil/common.h"
34#include "libavutil/pixdesc.h"
35#include "libavutil/intreadwrite.h"
36#include "libavutil/opt.h"
37
38#include "avfilter.h"
39#include "formats.h"
40#include "internal.h"
41#include "video.h"
42#include "vf_hqdn3d.h"
43
44#define LUT_BITS (depth==16 ? 8 : 4)
45#define LOAD(x) (((depth == 8 ? src[x] : AV_RN16A(src + (x) * 2)) << (16 - depth))\
46 + (((1 << (16 - depth)) - 1) >> 1))
47#define STORE(x,val) (depth == 8 ? dst[x] = (val) >> (16 - depth) : \
48 AV_WN16A(dst + (x) * 2, (val) >> (16 - depth)))
49
50av_always_inline
51static uint32_t lowpass(int prev, int cur, int16_t *coef, int depth)
52{
53 int d = (prev - cur) >> (8 - LUT_BITS);
54 return cur + coef[d];
55}
56
57av_always_inline
58static void denoise_temporal(uint8_t *src, uint8_t *dst,
59 uint16_t *frame_ant,
60 int w, int h, int sstride, int dstride,
61 int16_t *temporal, int depth)
62{
63 long x, y;
64 uint32_t tmp;
65
66 temporal += 256 << LUT_BITS;
67
68 for (y = 0; y < h; y++) {
69 for (x = 0; x < w; x++) {
70 frame_ant[x] = tmp = lowpass(frame_ant[x], LOAD(x), temporal, depth);
71 STORE(x, tmp);
72 }
73 src += sstride;
74 dst += dstride;
75 frame_ant += w;
76 }
77}
78
79av_always_inline
80static void denoise_spatial(HQDN3DContext *s,
81 uint8_t *src, uint8_t *dst,
82 uint16_t *line_ant, uint16_t *frame_ant,
83 int w, int h, int sstride, int dstride,
84 int16_t *spatial, int16_t *temporal, int depth)
85{
86 long x, y;
87 uint32_t pixel_ant;
88 uint32_t tmp;
89
90 spatial += 256 << LUT_BITS;
91 temporal += 256 << LUT_BITS;
92
93 /* First line has no top neighbor. Only left one for each tmp and
94 * last frame */
95 pixel_ant = LOAD(0);
96 for (x = 0; x < w; x++) {
97 line_ant[x] = tmp = pixel_ant = lowpass(pixel_ant, LOAD(x), spatial, depth);
98 frame_ant[x] = tmp = lowpass(frame_ant[x], tmp, temporal, depth);
99 STORE(x, tmp);
100 }
101
102 for (y = 1; y < h; y++) {
103 src += sstride;
104 dst += dstride;
105 frame_ant += w;
106 if (s->denoise_row[depth]) {
107 s->denoise_row[depth](src, dst, line_ant, frame_ant, w, spatial, temporal);
108 continue;
109 }
110 pixel_ant = LOAD(0);
111 for (x = 0; x < w-1; x++) {
112 line_ant[x] = tmp = lowpass(line_ant[x], pixel_ant, spatial, depth);
113 pixel_ant = lowpass(pixel_ant, LOAD(x+1), spatial, depth);
114 frame_ant[x] = tmp = lowpass(frame_ant[x], tmp, temporal, depth);
115 STORE(x, tmp);
116 }
117 line_ant[x] = tmp = lowpass(line_ant[x], pixel_ant, spatial, depth);
118 frame_ant[x] = tmp = lowpass(frame_ant[x], tmp, temporal, depth);
119 STORE(x, tmp);
120 }
121}
122
123av_always_inline
124static int denoise_depth(HQDN3DContext *s,
125 uint8_t *src, uint8_t *dst,
126 uint16_t *line_ant, uint16_t **frame_ant_ptr,
127 int w, int h, int sstride, int dstride,
128 int16_t *spatial, int16_t *temporal, int depth)
129{
130 // FIXME: For 16-bit depth, frame_ant could be a pointer to the previous
131 // filtered frame rather than a separate buffer.
132 long x, y;
133 uint16_t *frame_ant = *frame_ant_ptr;
134 if (!frame_ant) {
135 uint8_t *frame_src = src;
136 *frame_ant_ptr = frame_ant = av_malloc_array(w, h*sizeof(uint16_t));
137 if (!frame_ant)
138 return AVERROR(ENOMEM);
139 for (y = 0; y < h; y++, src += sstride, frame_ant += w)
140 for (x = 0; x < w; x++)
141 frame_ant[x] = LOAD(x);
142 src = frame_src;
143 frame_ant = *frame_ant_ptr;
144 }
145
146 if (spatial[0])
147 denoise_spatial(s, src, dst, line_ant, frame_ant,
148 w, h, sstride, dstride, spatial, temporal, depth);
149 else
150 denoise_temporal(src, dst, frame_ant,
151 w, h, sstride, dstride, temporal, depth);
152 emms_c();
153 return 0;
154}
155
156#define denoise(...) \
157 do { \
158 int ret = AVERROR_BUG; \
159 switch (s->depth) { \
160 case 8: ret = denoise_depth(__VA_ARGS__, 8); break; \
161 case 9: ret = denoise_depth(__VA_ARGS__, 9); break; \
162 case 10: ret = denoise_depth(__VA_ARGS__, 10); break; \
163 case 16: ret = denoise_depth(__VA_ARGS__, 16); break; \
164 } \
165 if (ret < 0) { \
166 av_frame_free(&out); \
167 if (!direct) \
168 av_frame_free(&in); \
169 return ret; \
170 } \
171 } while (0)
172
173static int16_t *precalc_coefs(double dist25, int depth)
174{
175 int i;
176 double gamma, simil, C;
177 int16_t *ct = av_malloc((512<<LUT_BITS)*sizeof(int16_t));
178 if (!ct)
179 return NULL;
180
181 gamma = log(0.25) / log(1.0 - FFMIN(dist25,252.0)/255.0 - 0.00001);
182
183 for (i = -256<<LUT_BITS; i < 256<<LUT_BITS; i++) {
184 double f = ((i<<(9-LUT_BITS)) + (1<<(8-LUT_BITS)) - 1) / 512.0; // midpoint of the bin
185 simil = FFMAX(0, 1.0 - fabs(f) / 255.0);
186 C = pow(simil, gamma) * 256.0 * f;
187 ct[(256<<LUT_BITS)+i] = lrint(C);
188 }
189
190 ct[0] = !!dist25;
191 return ct;
192}
193
194#define PARAM1_DEFAULT 4.0
195#define PARAM2_DEFAULT 3.0
196#define PARAM3_DEFAULT 6.0
197
198static av_cold int init(AVFilterContext *ctx)
199{
200 HQDN3DContext *s = ctx->priv;
201
202 if (!s->strength[LUMA_SPATIAL])
203 s->strength[LUMA_SPATIAL] = PARAM1_DEFAULT;
204 if (!s->strength[CHROMA_SPATIAL])
205 s->strength[CHROMA_SPATIAL] = PARAM2_DEFAULT * s->strength[LUMA_SPATIAL] / PARAM1_DEFAULT;
206 if (!s->strength[LUMA_TMP])
207 s->strength[LUMA_TMP] = PARAM3_DEFAULT * s->strength[LUMA_SPATIAL] / PARAM1_DEFAULT;
208 if (!s->strength[CHROMA_TMP])
209 s->strength[CHROMA_TMP] = s->strength[LUMA_TMP] * s->strength[CHROMA_SPATIAL] / s->strength[LUMA_SPATIAL];
210
211 av_log(ctx, AV_LOG_VERBOSE, "ls:%f cs:%f lt:%f ct:%f\n",
212 s->strength[LUMA_SPATIAL], s->strength[CHROMA_SPATIAL],
213 s->strength[LUMA_TMP], s->strength[CHROMA_TMP]);
214
215 return 0;
216}
217
218static av_cold void uninit(AVFilterContext *ctx)
219{
220 HQDN3DContext *s = ctx->priv;
221
222 av_freep(&s->coefs[0]);
223 av_freep(&s->coefs[1]);
224 av_freep(&s->coefs[2]);
225 av_freep(&s->coefs[3]);
226 av_freep(&s->line);
227 av_freep(&s->frame_prev[0]);
228 av_freep(&s->frame_prev[1]);
229 av_freep(&s->frame_prev[2]);
230}
231
232static int query_formats(AVFilterContext *ctx)
233{
234 static const enum AVPixelFormat pix_fmts[] = {
235 AV_PIX_FMT_YUV420P,
236 AV_PIX_FMT_YUV422P,
237 AV_PIX_FMT_YUV444P,
238 AV_PIX_FMT_YUV410P,
239 AV_PIX_FMT_YUV411P,
240 AV_PIX_FMT_YUV440P,
241 AV_PIX_FMT_YUVJ420P,
242 AV_PIX_FMT_YUVJ422P,
243 AV_PIX_FMT_YUVJ444P,
244 AV_PIX_FMT_YUVJ440P,
245 AV_PIX_FMT_YUV420P9,
246 AV_PIX_FMT_YUV422P9,
247 AV_PIX_FMT_YUV444P9,
248 AV_PIX_FMT_YUV420P10,
249 AV_PIX_FMT_YUV422P10,
250 AV_PIX_FMT_YUV444P10,
251 AV_PIX_FMT_YUV420P16,
252 AV_PIX_FMT_YUV422P16,
253 AV_PIX_FMT_YUV444P16,
254 AV_PIX_FMT_NONE
255 };
256 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
257 if (!fmts_list)
258 return AVERROR(ENOMEM);
259 return ff_set_common_formats(ctx, fmts_list);
260}
261
262static int config_input(AVFilterLink *inlink)
263{
264 HQDN3DContext *s = inlink->dst->priv;
265 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
266 int i;
267
268 uninit(inlink->dst);
269
270 s->hsub = desc->log2_chroma_w;
271 s->vsub = desc->log2_chroma_h;
272 s->depth = desc->comp[0].depth;
273
274 s->line = av_malloc_array(inlink->w, sizeof(*s->line));
275 if (!s->line)
276 return AVERROR(ENOMEM);
277
278 for (i = 0; i < 4; i++) {
279 s->coefs[i] = precalc_coefs(s->strength[i], s->depth);
280 if (!s->coefs[i])
281 return AVERROR(ENOMEM);
282 }
283
284 if (ARCH_X86)
285 ff_hqdn3d_init_x86(s);
286
287 return 0;
288}
289
290static int filter_frame(AVFilterLink *inlink, AVFrame *in)
291{
292 AVFilterContext *ctx = inlink->dst;
293 HQDN3DContext *s = ctx->priv;
294 AVFilterLink *outlink = ctx->outputs[0];
295
296 AVFrame *out;
297 int c, direct = av_frame_is_writable(in) && !ctx->is_disabled;
298
299 if (direct) {
300 out = in;
301 } else {
302 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
303 if (!out) {
304 av_frame_free(&in);
305 return AVERROR(ENOMEM);
306 }
307
308 av_frame_copy_props(out, in);
309 }
310
311 for (c = 0; c < 3; c++) {
312 denoise(s, in->data[c], out->data[c],
313 s->line, &s->frame_prev[c],
314 AV_CEIL_RSHIFT(in->width, (!!c * s->hsub)),
315 AV_CEIL_RSHIFT(in->height, (!!c * s->vsub)),
316 in->linesize[c], out->linesize[c],
317 s->coefs[c ? CHROMA_SPATIAL : LUMA_SPATIAL],
318 s->coefs[c ? CHROMA_TMP : LUMA_TMP]);
319 }
320
321 if (ctx->is_disabled) {
322 av_frame_free(&out);
323 return ff_filter_frame(outlink, in);
324 }
325
326 if (!direct)
327 av_frame_free(&in);
328
329 return ff_filter_frame(outlink, out);
330}
331
332#define OFFSET(x) offsetof(HQDN3DContext, x)
333#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
334static const AVOption hqdn3d_options[] = {
335 { "luma_spatial", "spatial luma strength", OFFSET(strength[LUMA_SPATIAL]), AV_OPT_TYPE_DOUBLE, { .dbl = 0.0 }, 0, DBL_MAX, FLAGS },
336 { "chroma_spatial", "spatial chroma strength", OFFSET(strength[CHROMA_SPATIAL]), AV_OPT_TYPE_DOUBLE, { .dbl = 0.0 }, 0, DBL_MAX, FLAGS },
337 { "luma_tmp", "temporal luma strength", OFFSET(strength[LUMA_TMP]), AV_OPT_TYPE_DOUBLE, { .dbl = 0.0 }, 0, DBL_MAX, FLAGS },
338 { "chroma_tmp", "temporal chroma strength", OFFSET(strength[CHROMA_TMP]), AV_OPT_TYPE_DOUBLE, { .dbl = 0.0 }, 0, DBL_MAX, FLAGS },
339 { NULL }
340};
341
342AVFILTER_DEFINE_CLASS(hqdn3d);
343
344static const AVFilterPad avfilter_vf_hqdn3d_inputs[] = {
345 {
346 .name = "default",
347 .type = AVMEDIA_TYPE_VIDEO,
348 .config_props = config_input,
349 .filter_frame = filter_frame,
350 },
351 { NULL }
352};
353
354
355static const AVFilterPad avfilter_vf_hqdn3d_outputs[] = {
356 {
357 .name = "default",
358 .type = AVMEDIA_TYPE_VIDEO
359 },
360 { NULL }
361};
362
363AVFilter ff_vf_hqdn3d = {
364 .name = "hqdn3d",
365 .description = NULL_IF_CONFIG_SMALL("Apply a High Quality 3D Denoiser."),
366 .priv_size = sizeof(HQDN3DContext),
367 .priv_class = &hqdn3d_class,
368 .init = init,
369 .uninit = uninit,
370 .query_formats = query_formats,
371 .inputs = avfilter_vf_hqdn3d_inputs,
372 .outputs = avfilter_vf_hqdn3d_outputs,
373 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
374};
375
generated by cgit at 2024-05-17 06:57:14 (GMT)