mirror of
https://code.videolan.org/videolan/vlc
synced 2024-07-25 09:41:30 +02:00
![Cheng Sun](/assets/img/avatar_default.png)
High Quality DeNoise 3D, a port of the MPlayer filter, removes high-frequency noise while minimizing blending artifacts by performing a 3-way low-pass filter To open source programmers across the world: MAY THE FOO BE WITH YOU (PS: code-fu, that is) (PPS: blame funman) Signed-off-by: Rafaël Carré <funman@videolan.org>
206 lines
7.0 KiB
C
206 lines
7.0 KiB
C
/*
|
|
* 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>
|
|
|
|
#define PARAM1_DEFAULT 4.0
|
|
#define PARAM2_DEFAULT 3.0
|
|
#define PARAM3_DEFAULT 6.0
|
|
|
|
//===========================================================================//
|
|
|
|
struct vf_priv_s {
|
|
int Coefs[4][512*16];
|
|
unsigned int *Line;
|
|
unsigned short *Frame[3];
|
|
};
|
|
|
|
|
|
/***************************************************************************/
|
|
|
|
static /*inline*/ unsigned int LowPassMul(unsigned int PrevMul, unsigned int CurrMul, int* Coef){
|
|
// int dMul= (PrevMul&0xFFFFFF)-(CurrMul&0xFFFFFF);
|
|
int dMul= PrevMul-CurrMul;
|
|
unsigned int d=((dMul+0x10007FF)>>12);
|
|
return CurrMul + Coef[d];
|
|
}
|
|
|
|
static void deNoiseTemporal(
|
|
unsigned char *Frame, // mpi->planes[x]
|
|
unsigned char *FrameDest, // dmpi->planes[x]
|
|
unsigned short *FrameAnt,
|
|
int W, int H, int sStride, int dStride,
|
|
int *Temporal)
|
|
{
|
|
long X, Y;
|
|
unsigned int PixelDst;
|
|
|
|
for (Y = 0; Y < H; Y++){
|
|
for (X = 0; X < W; X++){
|
|
PixelDst = LowPassMul(FrameAnt[X]<<8, Frame[X]<<16, Temporal);
|
|
FrameAnt[X] = ((PixelDst+0x1000007F)>>8);
|
|
FrameDest[X]= ((PixelDst+0x10007FFF)>>16);
|
|
}
|
|
Frame += sStride;
|
|
FrameDest += dStride;
|
|
FrameAnt += W;
|
|
}
|
|
}
|
|
|
|
static void deNoiseSpacial(
|
|
unsigned char *Frame, // mpi->planes[x]
|
|
unsigned char *FrameDest, // dmpi->planes[x]
|
|
unsigned int *LineAnt, // vf->priv->Line (width bytes)
|
|
int W, int H, int sStride, int dStride,
|
|
int *Horizontal, int *Vertical)
|
|
{
|
|
long X, Y;
|
|
long sLineOffs = 0, dLineOffs = 0;
|
|
unsigned int PixelAnt;
|
|
unsigned int PixelDst;
|
|
|
|
/* First pixel has no left nor top neighbor. */
|
|
PixelDst = LineAnt[0] = PixelAnt = Frame[0]<<16;
|
|
FrameDest[0]= ((PixelDst+0x10007FFF)>>16);
|
|
|
|
/* First line has no top neighbor, only left. */
|
|
for (X = 1; X < W; X++){
|
|
PixelDst = LineAnt[X] = LowPassMul(PixelAnt, Frame[X]<<16, Horizontal);
|
|
FrameDest[X]= ((PixelDst+0x10007FFF)>>16);
|
|
}
|
|
|
|
for (Y = 1; Y < H; Y++){
|
|
unsigned int PixelAnt;
|
|
sLineOffs += sStride, dLineOffs += dStride;
|
|
/* First pixel on each line doesn't have previous pixel */
|
|
PixelAnt = Frame[sLineOffs]<<16;
|
|
PixelDst = LineAnt[0] = LowPassMul(LineAnt[0], PixelAnt, Vertical);
|
|
FrameDest[dLineOffs]= ((PixelDst+0x10007FFF)>>16);
|
|
|
|
for (X = 1; X < W; X++){
|
|
unsigned int PixelDst;
|
|
/* The rest are normal */
|
|
PixelAnt = LowPassMul(PixelAnt, Frame[sLineOffs+X]<<16, Horizontal);
|
|
PixelDst = LineAnt[X] = LowPassMul(LineAnt[X], PixelAnt, Vertical);
|
|
FrameDest[dLineOffs+X]= ((PixelDst+0x10007FFF)>>16);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void deNoise(unsigned char *Frame, // mpi->planes[x]
|
|
unsigned char *FrameDest, // dmpi->planes[x]
|
|
unsigned int *LineAnt, // vf->priv->Line (width bytes)
|
|
unsigned short **FrameAntPtr,
|
|
int W, int H, int sStride, int dStride,
|
|
int *Horizontal, int *Vertical, int *Temporal)
|
|
{
|
|
long X, Y;
|
|
long sLineOffs = 0, dLineOffs = 0;
|
|
unsigned int PixelAnt;
|
|
unsigned int PixelDst;
|
|
unsigned short* FrameAnt=(*FrameAntPtr);
|
|
|
|
if(!FrameAnt){
|
|
(*FrameAntPtr)=FrameAnt=malloc(W*H*sizeof(unsigned short));
|
|
for (Y = 0; Y < H; Y++){
|
|
unsigned short* dst=&FrameAnt[Y*W];
|
|
unsigned char* src=Frame+Y*sStride;
|
|
for (X = 0; X < W; X++) dst[X]=src[X]<<8;
|
|
}
|
|
}
|
|
|
|
if(!Horizontal[0] && !Vertical[0]){
|
|
deNoiseTemporal(Frame, FrameDest, FrameAnt,
|
|
W, H, sStride, dStride, Temporal);
|
|
return;
|
|
}
|
|
if(!Temporal[0]){
|
|
deNoiseSpacial(Frame, FrameDest, LineAnt,
|
|
W, H, sStride, dStride, Horizontal, Vertical);
|
|
return;
|
|
}
|
|
|
|
/* First pixel has no left nor top neighbor. Only previous frame */
|
|
LineAnt[0] = PixelAnt = Frame[0]<<16;
|
|
PixelDst = LowPassMul(FrameAnt[0]<<8, PixelAnt, Temporal);
|
|
FrameAnt[0] = ((PixelDst+0x1000007F)>>8);
|
|
FrameDest[0]= ((PixelDst+0x10007FFF)>>16);
|
|
|
|
/* First line has no top neighbor. Only left one for each pixel and
|
|
* last frame */
|
|
for (X = 1; X < W; X++){
|
|
LineAnt[X] = PixelAnt = LowPassMul(PixelAnt, Frame[X]<<16, Horizontal);
|
|
PixelDst = LowPassMul(FrameAnt[X]<<8, PixelAnt, Temporal);
|
|
FrameAnt[X] = ((PixelDst+0x1000007F)>>8);
|
|
FrameDest[X]= ((PixelDst+0x10007FFF)>>16);
|
|
}
|
|
|
|
for (Y = 1; Y < H; Y++){
|
|
unsigned int PixelAnt;
|
|
unsigned short* LinePrev=&FrameAnt[Y*W];
|
|
sLineOffs += sStride, dLineOffs += dStride;
|
|
/* First pixel on each line doesn't have previous pixel */
|
|
PixelAnt = Frame[sLineOffs]<<16;
|
|
LineAnt[0] = LowPassMul(LineAnt[0], PixelAnt, Vertical);
|
|
PixelDst = LowPassMul(LinePrev[0]<<8, LineAnt[0], Temporal);
|
|
LinePrev[0] = ((PixelDst+0x1000007F)>>8);
|
|
FrameDest[dLineOffs]= ((PixelDst+0x10007FFF)>>16);
|
|
|
|
for (X = 1; X < W; X++){
|
|
unsigned int PixelDst;
|
|
/* The rest are normal */
|
|
PixelAnt = LowPassMul(PixelAnt, Frame[sLineOffs+X]<<16, Horizontal);
|
|
LineAnt[X] = LowPassMul(LineAnt[X], PixelAnt, Vertical);
|
|
PixelDst = LowPassMul(LinePrev[X]<<8, LineAnt[X], Temporal);
|
|
LinePrev[X] = ((PixelDst+0x1000007F)>>8);
|
|
FrameDest[dLineOffs+X]= ((PixelDst+0x10007FFF)>>16);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//===========================================================================//
|
|
|
|
#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 - 0.00001);
|
|
|
|
for (i = -255*16; i <= 255*16; i++)
|
|
{
|
|
Simil = 1.0 - ABS(i) / (16*255.0);
|
|
C = pow(Simil, Gamma) * 65536.0 * (double)i / 16.0;
|
|
Ct[16*256+i] = (C<0) ? (C-0.5) : (C+0.5);
|
|
}
|
|
|
|
Ct[0] = (Dist25 != 0);
|
|
}
|
|
|
|
|
|
//===========================================================================//
|