/* Copyright (C) 2003 Daniel Moreno This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include "config.h" #include "mp_msg.h" #ifdef HAVE_MALLOC_H #include #endif #include "img_format.h" #include "mp_image.h" #include "vf.h" #define PARAM1_DEFAULT 4.0 #define PARAM2_DEFAULT 3.0 #define PARAM3_DEFAULT 6.0 //===========================================================================// struct vf_priv_s { int Coefs[4][512]; unsigned char *Line; mp_image_t *pmpi; }; /***************************************************************************/ static int config(struct vf_instance_s* vf, int width, int height, int d_width, int d_height, unsigned int flags, unsigned int outfmt){ if(vf->priv->Line) free(vf->priv->Line); vf->priv->Line = malloc(width); vf->priv->pmpi=NULL; // vf->default_caps &= !VFCAP_ACCEPT_STRIDE; return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt); } static void uninit(struct vf_instance_s* vf) { free(vf->priv->Line); } #define LowPass(Prev, Curr, Coef) (Curr + Coef[Prev - Curr]) static void deNoise(unsigned char *Frame, // mpi->planes[x] unsigned char *FramePrev, // pmpi->planes[x] unsigned char *FrameDest, // dmpi->planes[x] unsigned char *LineAnt, // vf->priv->Line (width bytes) int W, int H, int sStride, int pStride, int dStride, int *Horizontal, int *Vertical, int *Temporal) { int X, Y; int sLineOffs = 0, pLineOffs = 0, dLineOffs = 0; unsigned char PixelAnt; /* First pixel has no left nor top neighbor. Only previous frame */ LineAnt[0] = PixelAnt = Frame[0]; FrameDest[0] = LowPass(FramePrev[0], LineAnt[0], Temporal); /* Fist line has no top neighbor. Only left one for each pixel and * last frame */ for (X = 1; X < W; X++) { PixelAnt = LowPass(PixelAnt, Frame[X], Horizontal); LineAnt[X] = PixelAnt; FrameDest[X] = LowPass(FramePrev[X], LineAnt[X], Temporal); } for (Y = 1; Y < H; Y++) { sLineOffs += sStride, pLineOffs += pStride, dLineOffs += dStride; /* First pixel on each line doesn't have previous pixel */ PixelAnt = Frame[sLineOffs]; LineAnt[0] = LowPass(LineAnt[0], PixelAnt, Vertical); FrameDest[dLineOffs] = LowPass(FramePrev[pLineOffs], LineAnt[0], Temporal); for (X = 1; X < W; X++) { /* The rest are normal */ PixelAnt = LowPass(PixelAnt, Frame[sLineOffs+X], Horizontal); LineAnt[X] = LowPass(LineAnt[X], PixelAnt, Vertical); FrameDest[dLineOffs+X] = LowPass(FramePrev[pLineOffs+X], LineAnt[X], Temporal); } } } static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){ int cw= mpi->w >> mpi->chroma_x_shift; int ch= mpi->h >> mpi->chroma_y_shift; int W = mpi->w, H = mpi->h; mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt, MP_IMGTYPE_IP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PRESERVE | MP_IMGFLAG_READABLE, mpi->w,mpi->h); if(!dmpi) return 0; if (!vf->priv->pmpi) vf->priv->pmpi=mpi; deNoise(mpi->planes[0], vf->priv->pmpi->planes[0], dmpi->planes[0], vf->priv->Line, W, H, mpi->stride[0], vf->priv->pmpi->stride[0], dmpi->stride[0], vf->priv->Coefs[0] + 256, vf->priv->Coefs[0] + 256, vf->priv->Coefs[1] + 256); deNoise(mpi->planes[1], vf->priv->pmpi->planes[1], dmpi->planes[1], vf->priv->Line, cw, ch, mpi->stride[1], vf->priv->pmpi->stride[1], dmpi->stride[1], vf->priv->Coefs[2] + 256, vf->priv->Coefs[2] + 256, vf->priv->Coefs[3] + 256); deNoise(mpi->planes[2], vf->priv->pmpi->planes[2], dmpi->planes[2], vf->priv->Line, cw, ch, mpi->stride[2], vf->priv->pmpi->stride[2], dmpi->stride[2], vf->priv->Coefs[2] + 256, vf->priv->Coefs[2] + 256, vf->priv->Coefs[3] + 256); vf->priv->pmpi=dmpi; // save reference image return vf_next_put_image(vf,dmpi, pts); } //===========================================================================// static int query_format(struct vf_instance_s* vf, unsigned int fmt){ switch(fmt) { case IMGFMT_YV12: case IMGFMT_I420: case IMGFMT_IYUV: case IMGFMT_YVU9: case IMGFMT_444P: case IMGFMT_422P: case IMGFMT_411P: return vf_next_query_format(vf, fmt); } return 0; } #define ABS(A) ( (A) > 0 ? (A) : -(A) ) static void PrecalcCoefs(int *Ct, double Dist25) { int i; double Gamma, Simil, C; Gamma = log(0.25) / log(1.0 - Dist25/255.0); for (i = -256; i <= 255; i++) { Simil = 1.0 - ABS(i) / 255.0; // Ct[256+i] = lround(pow(Simil, Gamma) * (double)i); C = pow(Simil, Gamma) * (double)i; Ct[256+i] = (C<0) ? (C-0.5) : (C+0.5); } } static int open(vf_instance_t *vf, char* args){ double LumSpac, LumTmp, ChromSpac, ChromTmp; double Param1, Param2, Param3; vf->config=config; vf->put_image=put_image; vf->query_format=query_format; vf->uninit=uninit; vf->priv=malloc(sizeof(struct vf_priv_s)); memset(vf->priv, 0, sizeof(struct vf_priv_s)); if (args) { switch(sscanf(args, "%lf:%lf:%lf", &Param1, &Param2, &Param3 )) { case 0: LumSpac = PARAM1_DEFAULT; LumTmp = PARAM3_DEFAULT; ChromSpac = PARAM2_DEFAULT; ChromTmp = LumTmp * ChromSpac / LumSpac; break; case 1: LumSpac = Param1; LumTmp = PARAM3_DEFAULT * Param1 / PARAM1_DEFAULT; ChromSpac = PARAM2_DEFAULT * Param1 / PARAM1_DEFAULT; ChromTmp = LumTmp * ChromSpac / LumSpac; break; case 2: LumSpac = Param1; LumTmp = PARAM3_DEFAULT * Param1 / PARAM1_DEFAULT; ChromSpac = Param2; ChromTmp = LumTmp * ChromSpac / LumSpac; break; case 3: LumSpac = Param1; LumTmp = Param3; ChromSpac = Param2; ChromTmp = LumTmp * ChromSpac / LumSpac; break; default: LumSpac = PARAM1_DEFAULT; LumTmp = PARAM3_DEFAULT; ChromSpac = PARAM2_DEFAULT; ChromTmp = LumTmp * ChromSpac / LumSpac; } } else { LumSpac = PARAM1_DEFAULT; LumTmp = PARAM3_DEFAULT; ChromSpac = PARAM2_DEFAULT; ChromTmp = LumTmp * ChromSpac / LumSpac; } PrecalcCoefs(vf->priv->Coefs[0], LumSpac); PrecalcCoefs(vf->priv->Coefs[1], LumTmp); PrecalcCoefs(vf->priv->Coefs[2], ChromSpac); PrecalcCoefs(vf->priv->Coefs[3], ChromTmp); return 1; } const vf_info_t vf_info_denoise3d = { "3D Denoiser (variable lowpass filter)", "denoise3d", "Daniel Moreno", "", open, NULL }; //===========================================================================//