diff options
Diffstat (limited to 'libavfilter/libmpcodecs/vf_denoise3d.c')
| -rw-r--r-- | libavfilter/libmpcodecs/vf_denoise3d.c | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/libavfilter/libmpcodecs/vf_denoise3d.c b/libavfilter/libmpcodecs/vf_denoise3d.c new file mode 100644 index 0000000..a952a22 --- /dev/null +++ b/libavfilter/libmpcodecs/vf_denoise3d.c @@ -0,0 +1,268 @@ +/* + * Copyright (C) 2003 Daniel Moreno <comac@comac.darktech.org> + * + * This file is part of MPlayer. + * + * MPlayer 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. + * + * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <inttypes.h> +#include <math.h> + +#include "mp_msg.h" +#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 *vf, + int width, int height, int d_width, int d_height, + unsigned int flags, unsigned int outfmt){ + + 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 *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 *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 *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 vf_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", + "", + vf_open, + NULL +}; + +//===========================================================================// |
