2 * Copyright (C) 2003 Daniel Moreno <comac@comac.darktech.org>
4 * This file is part of MPlayer.
6 * MPlayer is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * MPlayer 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
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
28 #include "img_format.h"
32 #define PARAM1_DEFAULT 4.0
33 #define PARAM2_DEFAULT 3.0
34 #define PARAM3_DEFAULT 6.0
36 //===========================================================================//
45 /***************************************************************************/
48 static int config(struct vf_instance *vf,
49 int width, int height, int d_width, int d_height,
50 unsigned int flags, unsigned int outfmt){
53 vf->priv->Line = malloc(width);
55 // vf->default_caps &= !VFCAP_ACCEPT_STRIDE;
57 return ff_vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
61 static void uninit(struct vf_instance *vf)
66 #define LowPass(Prev, Curr, Coef) (Curr + Coef[Prev - Curr])
68 static void deNoise(unsigned char *Frame, // mpi->planes[x]
69 unsigned char *FramePrev, // pmpi->planes[x]
70 unsigned char *FrameDest, // dmpi->planes[x]
71 unsigned char *LineAnt, // vf->priv->Line (width bytes)
72 int W, int H, int sStride, int pStride, int dStride,
73 int *Horizontal, int *Vertical, int *Temporal)
76 int sLineOffs = 0, pLineOffs = 0, dLineOffs = 0;
77 unsigned char PixelAnt;
79 /* First pixel has no left nor top neighbor. Only previous frame */
80 LineAnt[0] = PixelAnt = Frame[0];
81 FrameDest[0] = LowPass(FramePrev[0], LineAnt[0], Temporal);
83 /* Fist line has no top neighbor. Only left one for each pixel and
85 for (X = 1; X < W; X++)
87 PixelAnt = LowPass(PixelAnt, Frame[X], Horizontal);
88 LineAnt[X] = PixelAnt;
89 FrameDest[X] = LowPass(FramePrev[X], LineAnt[X], Temporal);
92 for (Y = 1; Y < H; Y++)
94 sLineOffs += sStride, pLineOffs += pStride, dLineOffs += dStride;
95 /* First pixel on each line doesn't have previous pixel */
96 PixelAnt = Frame[sLineOffs];
97 LineAnt[0] = LowPass(LineAnt[0], PixelAnt, Vertical);
98 FrameDest[dLineOffs] = LowPass(FramePrev[pLineOffs], LineAnt[0], Temporal);
100 for (X = 1; X < W; X++)
102 /* The rest are normal */
103 PixelAnt = LowPass(PixelAnt, Frame[sLineOffs+X], Horizontal);
104 LineAnt[X] = LowPass(LineAnt[X], PixelAnt, Vertical);
105 FrameDest[dLineOffs+X] = LowPass(FramePrev[pLineOffs+X], LineAnt[X], Temporal);
112 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
113 int cw= mpi->w >> mpi->chroma_x_shift;
114 int ch= mpi->h >> mpi->chroma_y_shift;
115 int W = mpi->w, H = mpi->h;
117 mp_image_t *dmpi=ff_vf_get_image(vf->next,mpi->imgfmt,
118 MP_IMGTYPE_IP, MP_IMGFLAG_ACCEPT_STRIDE |
119 MP_IMGFLAG_PRESERVE | MP_IMGFLAG_READABLE,
123 if (!vf->priv->pmpi) vf->priv->pmpi=mpi;
125 deNoise(mpi->planes[0], vf->priv->pmpi->planes[0], dmpi->planes[0],
126 vf->priv->Line, W, H,
127 mpi->stride[0], vf->priv->pmpi->stride[0], dmpi->stride[0],
128 vf->priv->Coefs[0] + 256,
129 vf->priv->Coefs[0] + 256,
130 vf->priv->Coefs[1] + 256);
131 deNoise(mpi->planes[1], vf->priv->pmpi->planes[1], dmpi->planes[1],
132 vf->priv->Line, cw, ch,
133 mpi->stride[1], vf->priv->pmpi->stride[1], dmpi->stride[1],
134 vf->priv->Coefs[2] + 256,
135 vf->priv->Coefs[2] + 256,
136 vf->priv->Coefs[3] + 256);
137 deNoise(mpi->planes[2], vf->priv->pmpi->planes[2], dmpi->planes[2],
138 vf->priv->Line, cw, ch,
139 mpi->stride[2], vf->priv->pmpi->stride[2], dmpi->stride[2],
140 vf->priv->Coefs[2] + 256,
141 vf->priv->Coefs[2] + 256,
142 vf->priv->Coefs[3] + 256);
144 vf->priv->pmpi=dmpi; // save reference image
145 return ff_vf_next_put_image(vf,dmpi, pts);
148 //===========================================================================//
150 static int query_format(struct vf_instance *vf, unsigned int fmt){
160 return ff_vf_next_query_format(vf, fmt);
166 #define ABS(A) ( (A) > 0 ? (A) : -(A) )
168 static void PrecalcCoefs(int *Ct, double Dist25)
171 double Gamma, Simil, C;
173 Gamma = log(0.25) / log(1.0 - Dist25/255.0);
175 for (i = -256; i <= 255; i++)
177 Simil = 1.0 - ABS(i) / 255.0;
178 // Ct[256+i] = lround(pow(Simil, Gamma) * (double)i);
179 C = pow(Simil, Gamma) * (double)i;
180 Ct[256+i] = (C<0) ? (C-0.5) : (C+0.5);
185 static int vf_open(vf_instance_t *vf, char *args){
186 double LumSpac, LumTmp, ChromSpac, ChromTmp;
187 double Param1, Param2, Param3;
190 vf->put_image=put_image;
191 vf->query_format=query_format;
193 vf->priv=malloc(sizeof(struct vf_priv_s));
194 memset(vf->priv, 0, sizeof(struct vf_priv_s));
198 switch(sscanf(args, "%lf:%lf:%lf",
199 &Param1, &Param2, &Param3
203 LumSpac = PARAM1_DEFAULT;
204 LumTmp = PARAM3_DEFAULT;
206 ChromSpac = PARAM2_DEFAULT;
207 ChromTmp = LumTmp * ChromSpac / LumSpac;
212 LumTmp = PARAM3_DEFAULT * Param1 / PARAM1_DEFAULT;
214 ChromSpac = PARAM2_DEFAULT * Param1 / PARAM1_DEFAULT;
215 ChromTmp = LumTmp * ChromSpac / LumSpac;
220 LumTmp = PARAM3_DEFAULT * Param1 / PARAM1_DEFAULT;
223 ChromTmp = LumTmp * ChromSpac / LumSpac;
231 ChromTmp = LumTmp * ChromSpac / LumSpac;
235 LumSpac = PARAM1_DEFAULT;
236 LumTmp = PARAM3_DEFAULT;
238 ChromSpac = PARAM2_DEFAULT;
239 ChromTmp = LumTmp * ChromSpac / LumSpac;
244 LumSpac = PARAM1_DEFAULT;
245 LumTmp = PARAM3_DEFAULT;
247 ChromSpac = PARAM2_DEFAULT;
248 ChromTmp = LumTmp * ChromSpac / LumSpac;
251 PrecalcCoefs(vf->priv->Coefs[0], LumSpac);
252 PrecalcCoefs(vf->priv->Coefs[1], LumTmp);
253 PrecalcCoefs(vf->priv->Coefs[2], ChromSpac);
254 PrecalcCoefs(vf->priv->Coefs[3], ChromTmp);
259 const vf_info_t ff_vf_info_denoise3d = {
260 "3D Denoiser (variable lowpass filter)",
268 //===========================================================================//