FFmpeg: libavfilter/vf_hqdn3d.c Source File

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vf_hqdn3d.c

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1 /*

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 */

23 /**

24 * @file

25 * high quality 3d video denoiser, ported from MPlayer

26 * libmpcodecs/vf_hqdn3d.c.

27 */

29 #include <float.h>

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"

38 #include "avfilter.h"

39 #include "formats.h"

40 #include "internal.h"

41 #include "video.h"

42 #include "vf_hqdn3d.h"

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)))

50 av_always_inline

51 static 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 }

57 av_always_inline

58 static 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;

66 temporal += 256 << LUT_BITS;

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 }

79 av_always_inline

80 static 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;

90 spatial += 256 << LUT_BITS;

91 temporal += 256 << LUT_BITS;

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

123 av_always_inline

124 static void 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 16bit 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(w*h*sizeof(uint16_t));

137 for (y = 0; y < h; y++, src += sstride, frame_ant += w)

138 for (x = 0; x < w; x++)

139 frame_ant[x] = LOAD(x);

140 src = frame_src;

141 frame_ant = *frame_ant_ptr;

142 }

143

144 if (spatial[0])

145 denoise_spatial(s, src, dst, line_ant, frame_ant,

146 w, h, sstride, dstride, spatial, temporal, depth);

147 else

148 denoise_temporal(src, dst, frame_ant,

149 w, h, sstride, dstride, temporal, depth);

150 }

151

152 #define denoise(...) \

153 switch (s->depth) {\

154 case 8: denoise_depth(__VA_ARGS__, 8); break;\

155 case 9: denoise_depth(__VA_ARGS__, 9); break;\

156 case 10: denoise_depth(__VA_ARGS__, 10); break;\

157 case 16: denoise_depth(__VA_ARGS__, 16); break;\

158 }

159

160 static int16_t *precalc_coefs(double dist25, int depth)

161 {

162 int i;

163 double gamma, simil, C;

164 int16_t *ct = av_malloc((512<<LUT_BITS)*sizeof(int16_t));

165 if (!ct)

166 return NULL;

167

168 gamma = log(0.25) / log(1.0 - FFMIN(dist25,252.0)/255.0 - 0.00001);

169

170 for (i = -255<<LUT_BITS; i <= 255<<LUT_BITS; i++) {

171 double f = ((i<<(9-LUT_BITS)) + (1<<(8-LUT_BITS)) - 1) / 512.0; // midpoint of the bin

172 simil = 1.0 - FFABS(f) / 255.0;

173 C = pow(simil, gamma) * 256.0 * f;

174 ct[(256<<LUT_BITS)+i] = lrint(C);

175 }

176

177 ct[0] = !!dist25;

178 return ct;

179 }

180

181 #define PARAM1_DEFAULT 4.0

182 #define PARAM2_DEFAULT 3.0

183 #define PARAM3_DEFAULT 6.0

184

185 static av_cold int init(AVFilterContext *ctx)

186 {

187 HQDN3DContext *s = ctx->priv;

188

189 if (!s->strength[LUMA_SPATIAL])

190 s->strength[LUMA_SPATIAL] = PARAM1_DEFAULT;

191 if (!s->strength[CHROMA_SPATIAL])

192 s->strength[CHROMA_SPATIAL] = PARAM2_DEFAULT * s->strength[LUMA_SPATIAL] / PARAM1_DEFAULT;

193 if (!s->strength[LUMA_TMP])

194 s->strength[LUMA_TMP] = PARAM3_DEFAULT * s->strength[LUMA_SPATIAL] / PARAM1_DEFAULT;

195 if (!s->strength[CHROMA_TMP])

196 s->strength[CHROMA_TMP] = s->strength[LUMA_TMP] * s->strength[CHROMA_SPATIAL] / s->strength[LUMA_SPATIAL];

197

198 av_log(ctx, AV_LOG_VERBOSE, "ls:%f cs:%f lt:%f ct:%f\n",

199 s->strength[LUMA_SPATIAL], s->strength[CHROMA_SPATIAL],

200 s->strength[LUMA_TMP], s->strength[CHROMA_TMP]);

201

202 return 0;

203 }

204

205 static av_cold void uninit(AVFilterContext *ctx)

206 {

207 HQDN3DContext *s = ctx->priv;

208

209 av_freep(&s->coefs[0]);

210 av_freep(&s->coefs[1]);

211 av_freep(&s->coefs[2]);

212 av_freep(&s->coefs[3]);

213 av_freep(&s->line);

214 av_freep(&s->frame_prev[0]);

215 av_freep(&s->frame_prev[1]);

216 av_freep(&s->frame_prev[2]);

217 }

218

219 static int query_formats(AVFilterContext *ctx)

220 {

221 static const enum AVPixelFormat pix_fmts[] = {

222 AV_PIX_FMT_YUV420P,

223 AV_PIX_FMT_YUV422P,

224 AV_PIX_FMT_YUV444P,

225 AV_PIX_FMT_YUV410P,

226 AV_PIX_FMT_YUV411P,

227 AV_PIX_FMT_YUV440P,

228 AV_PIX_FMT_YUVJ420P,

229 AV_PIX_FMT_YUVJ422P,

230 AV_PIX_FMT_YUVJ444P,

231 AV_PIX_FMT_YUVJ440P,

232 AV_NE( AV_PIX_FMT_YUV420P9BE, AV_PIX_FMT_YUV420P9LE ),

233 AV_NE( AV_PIX_FMT_YUV422P9BE, AV_PIX_FMT_YUV422P9LE ),

234 AV_NE( AV_PIX_FMT_YUV444P9BE, AV_PIX_FMT_YUV444P9LE ),

235 AV_NE( AV_PIX_FMT_YUV420P10BE, AV_PIX_FMT_YUV420P10LE ),

236 AV_NE( AV_PIX_FMT_YUV422P10BE, AV_PIX_FMT_YUV422P10LE ),

237 AV_NE( AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUV444P10LE ),

238 AV_NE( AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUV420P16LE ),

239 AV_NE( AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUV422P16LE ),

240 AV_NE( AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUV444P16LE ),

241 AV_PIX_FMT_NONE

242 };

243

244 ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));

245

246 return 0;

247 }

248

249 static int config_input(AVFilterLink *inlink)

250 {

251 HQDN3DContext *s = inlink->dst->priv;

252 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);

253 int i;

254

255 uninit(inlink->dst);

256

257 s->hsub = desc->log2_chroma_w;

258 s->vsub = desc->log2_chroma_h;

259 s->depth = desc->comp[0].depth_minus1+1;

260

261 s->line = av_malloc(inlink->w * sizeof(*s->line));

262 if (!s->line)

263 return AVERROR(ENOMEM);

264

265 for (i = 0; i < 4; i++) {

266 s->coefs[i] = precalc_coefs(s->strength[i], s->depth);

267 if (!s->coefs[i])

268 return AVERROR(ENOMEM);

269 }

270

271 if (ARCH_X86)

272 ff_hqdn3d_init_x86(s);

273

274 return 0;

275 }

276

277 static int filter_frame(AVFilterLink *inlink, AVFrame *in)

278 {

279 AVFilterContext *ctx = inlink->dst;

280 HQDN3DContext *s = ctx->priv;

281 AVFilterLink *outlink = ctx->outputs[0];

282

283 AVFrame *out;

284 int direct, c;

285

286 if (av_frame_is_writable(in) && !ctx->is_disabled) {

287 direct = 1;

288 out = in;

289 } else {

290 direct = 0;

291 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);

292 if (!out) {

293 av_frame_free(&in);

294 return AVERROR(ENOMEM);

295 }

296

297 av_frame_copy_props(out, in);

298 }

299

300 for (c = 0; c < 3; c++) {

301 denoise(s, in->data[c], out->data[c],

302 s->line, &s->frame_prev[c],

303 FF_CEIL_RSHIFT(in->width, (!!c * s->hsub)),

304 FF_CEIL_RSHIFT(in->height, (!!c * s->vsub)),

305 in->linesize[c], out->linesize[c],

306 s->coefs[c ? CHROMA_SPATIAL : LUMA_SPATIAL],

307 s->coefs[c ? CHROMA_TMP : LUMA_TMP]);

308 }

309

310 if (ctx->is_disabled) {

311 av_frame_free(&out);

312 return ff_filter_frame(outlink, in);

313 }

314

315 if (!direct)

316 av_frame_free(&in);

317

318 return ff_filter_frame(outlink, out);

319 }

320

321 #define OFFSET(x) offsetof(HQDN3DContext, x)

322 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

323 static const AVOption hqdn3d_options[] = {

324 { "luma_spatial", "spatial luma strength", OFFSET(strength[LUMA_SPATIAL]), AV_OPT_TYPE_DOUBLE, { .dbl = 0.0 }, 0, DBL_MAX, FLAGS },

325 { "chroma_spatial", "spatial chroma strength", OFFSET(strength[CHROMA_SPATIAL]), AV_OPT_TYPE_DOUBLE, { .dbl = 0.0 }, 0, DBL_MAX, FLAGS },

326 { "luma_tmp", "temporal luma strength", OFFSET(strength[LUMA_TMP]), AV_OPT_TYPE_DOUBLE, { .dbl = 0.0 }, 0, DBL_MAX, FLAGS },

327 { "chroma_tmp", "temporal chroma strength", OFFSET(strength[CHROMA_TMP]), AV_OPT_TYPE_DOUBLE, { .dbl = 0.0 }, 0, DBL_MAX, FLAGS },

328 { NULL },

329 };

330

331 AVFILTER_DEFINE_CLASS(hqdn3d);

332

333 static const AVFilterPad avfilter_vf_hqdn3d_inputs[] = {

334 {

335 .name = "default",

336 .type = AVMEDIA_TYPE_VIDEO,

337 .config_props = config_input,

338 .filter_frame = filter_frame,

339 },

340 { NULL }

341 };

342

343

344 static const AVFilterPad avfilter_vf_hqdn3d_outputs[] = {

345 {

346 .name = "default",

347 .type = AVMEDIA_TYPE_VIDEO

348 },

349 { NULL }

350 };

351

352 AVFilter avfilter_vf_hqdn3d = {

353 .name = "hqdn3d",

354 .description = NULL_IF_CONFIG_SMALL("Apply a High Quality 3D Denoiser."),

355

356 .priv_size = sizeof(HQDN3DContext),

357 .priv_class = &hqdn3d_class,

358 .init = init,

359 .uninit = uninit,

360 .query_formats = query_formats,

361

362 .inputs = avfilter_vf_hqdn3d_inputs,

363 .outputs = avfilter_vf_hqdn3d_outputs,

364 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,

365 };

Generated on Wed Jul 10 2013 23:48:10 for FFmpeg by doxygen 1.8.2