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F1QClean.cpp
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F1QClean.cpp
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/* This file contains a f1qclean function of FFTQuiver plugin for vapoursynth
// Row by row the image is transormed into frequency domain, frequency filtered and
transformed back into row. In addition to a large number of Butterworth
filters, filter can be custom designed.
This plugin needs any one of libfftw3f-3.dll,
FFTW3 dll, fftw.dll to reside in path (may be windows\system32 folder)
Author V.C.Mohan.
jun 2015, 14 sep 2020, 26 May 2021
Copyright (C) <2014 - 2021> <V.C.Mohan>
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, version 3 of the License.
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.
A copy of the GNU General Public License is at
see <http://www.gnu.org/licenses/>.
*/
//---------------------------------------------------------------------------
/*
#include <stdlib.h>
#include "VapourSynth.h"
#include "VSHelper.h"
#include <math.h>
#define _USE_MATH_DEFINES
#include <vector>
#include "windows.h"
#include "fftwlite.h"
#include "FQDomainHelper.h"
*/
//-----------------------------------------------------------------------------
typedef struct
{
VSNodeRef *node;
const VSVideoInfo *vi;
int span; // number of filters or for custo pairs specified
int from;
int upto;
int option;
int limit; // original value reduced to this %age
int frequency[10];
int nfrequencies;
float* ampSquareBuf; // freq response of filter
fftwf_plan pf, pin; // fftwf creates a plan of process. pointer to it
int wbest; // wbest dimension for speed
int freqWidth;
#include "fftLateBindingClassParams.cpp"
float* inBuf;
fftwf_complex* outBuf;
float**sortBuf;
} F1QClean;
class LesserThan {
public:
template <typename finc>
bool operator()(const finc* f1, const finc* f2)
{
return *f1 < *f2;
}
};
//std::sort(sortBuf, sortBuf + span, LesserThan());
template <typename finc>
void f1qCleanProcessFull(F1QClean* d, const finc * sp, finc *dp, const int pitch,
const int wd , const int ht, finc min, finc max );
void getAmpSqValues(float *ampSquareBuf, fftwf_complex * outBuf, int freqWidth);
void cleanOutBuf(fftwf_complex* outBuf, float* ampSquareBuf,
float *sortBuf, int span,int from,int upto, int freqWidth);
void limitMaxAmplitudeInSpan(fftwf_complex* outBuf, int frequency, int span, int limit);
void scaleValues(fftwf_complex* outBuf, int freqWidth, float scale);
// This function is called immediately after vsapi->createFilter(). This is the only place where the video
// properties may be set. In this case we simply use the same as the input clip. You may pass an array
// of VSVideoInfo if the filter has more than one output, like rgb+alpha as two separate clips.
static void VS_CC f1qcleanInit(VSMap *in, VSMap *out, void **instanceData, VSNode *node,
VSCore *core, const VSAPI *vsapi)
{
F1QClean *d = (F1QClean *) * instanceData;
vsapi->setVideoInfo(d->vi, 1, node);
int * facbuf = (int *) vs_aligned_malloc <int>(sizeof( int) *64, 32); //maximum 64 factors, in this buf values filled are pairs of first is factor, second is dividend to be factored. At
// a value of 1 no more factors
// wbest dimensions for speed. make sure starting with even number for width
int wdEven = ((d->vi->width + 3) >> 2) << 2;
d->wbest = getBestDim(wdEven, facbuf);
vs_aligned_free(facbuf);
d->freqWidth = d->wbest / 2 + 1;
d->span = ((d->span * d->freqWidth) / NYQUIST) | 1;
if (d->option == 2)
{
d->from = (d->from * d->freqWidth) / NYQUIST;
d->upto = (d->upto * d->freqWidth) / NYQUIST;
}
else
{
for (int i = 0; i < d->nfrequencies; i ++)
d->frequency[i] = (d->frequency[i] * d->freqWidth) / NYQUIST;
}
#include "ConstructorCodeForLateBindingfft.cpp"
if (!ok)
{
vsapi->setError(out, "F1QClean or F1QLimit: could not load any of the dll or get required fnctions");
if (d->hinstLib != NULL)
FreeLibrary(d->hinstLib);
vsapi->freeNode(d->node);
return;
}
// create fft plans. Requires buffers
d->inBuf = (float *)d->fftwf_malloc (sizeof(float) * d->wbest );
d->outBuf = (fftwf_complex*) d->fftwf_malloc (sizeof(fftwf_complex) * d->freqWidth);
if (d->option == 2) // F2QClean auto sets it to 2
{
d->ampSquareBuf = (float*)d->fftwf_malloc(sizeof(float) * d->freqWidth);
d->sortBuf = (float**)vs_aligned_malloc(sizeof(float*) * d->span, 32);
}
// get fft sine cosine config buffers allocated by plans
d->pf = d-> fftwf_plan_dft_r2c_1d( d->wbest, d->inBuf, d->outBuf, FFTW_MEASURE | FFTW_DESTROY_INPUT);
d->pin = d->fftwf_plan_dft_c2r_1d( d->wbest, d->outBuf, d->inBuf, FFTW_MEASURE | FFTW_DESTROY_INPUT);
}
//---------------------------------------------------------------------------------------------------------------------------------
template <typename finc>
void f1qCleanProcessFull(F1QClean* d, const finc * sp, finc * dp, const int pitch,
const int wd ,const int ht, finc min, finc max)
{
float scale = 1.0f / d->wbest;
for(int h = 0; h < ht ; h++)
{
getRowInput(d->inBuf, sp, d->wbest, wd );
d->fftwf_execute(d->pf);
scaleValues(d->outBuf, d->freqWidth, scale);
if (d->option == 2) // F2QClean
{
//search spectrum between from and upto
getAmpSqValues(d->ampSquareBuf, d->outBuf, d->freqWidth);
cleanOutBuf(d->outBuf, d->ampSquareBuf, d->sortBuf, d->span, d->from, d->upto, d->freqWidth);
}
else if (d->option == 1) // F2QLimit
{
for (int i = 0; i < d->nfrequencies; i++)
{
limitMaxAmplitudeInSpan(d->outBuf, d->frequency[i], d->span, d->limit);
}
}
d->fftwf_execute(d->pin);
getRowOutput(d->inBuf, dp, wd, min, max);
sp += pitch;
dp += pitch;
}
}
//....................................................................
void getAmpSqValues(float *ampSquareBuf, fftwf_complex* outBuf, int freqWidth)
{
for (int i = 0; i < freqWidth; i++)
{
ampSquareBuf[i] = getAmpSquareOfComplex(outBuf + i);
}
}
void scaleValues( fftwf_complex* outBuf, int freqWidth, float scale)
{
for (int i = 0; i < freqWidth; i++)
{
outBuf[i][0] *= scale;
outBuf[i][1] *= scale;
}
}
void cleanOutBuf(fftwf_complex* outBuf, float* ampSquareBuf,
float** sortBuf, int span,int from,int upto, int freqWidth)
{
int center = span / 2;
for (int w = from - center; w < upto - center; w++)
{
for (int s = 0; s < span; s++)
{
sortBuf[s] = ampSquareBuf + w + s;
}
std::sort(sortBuf, sortBuf + span, LesserThan());
int median = (int)(sortBuf[center] - ampSquareBuf);
if (ampSquareBuf[w + center] > *(sortBuf [center]))
{
outBuf[w + center][0] = outBuf[median][0];
outBuf[w + center][1] = outBuf[median][1];
}
}
}
void limitMaxAmplitudeInSpan(fftwf_complex * outBuf, int frequency, int span, int limit)
{
float max = 0.0f;
float local;
float lim = limit / 100.0f;
int point = 0;
for (int i = frequency - span; i < frequency + span; i++)
{
local = getAmpSquareOfComplex(outBuf + i);
if (local > max)
{
max = local;
point = i;
}
}
// point and neighbours are zeroed
for (int i = point - 1; i <= point + 1; i++)
{
outBuf[i][0] *= lim;
outBuf[i][1] *= lim;
}
}
//---------------------------------------------------------------------------------------------------------
// This is the main function that gets called when a frame should be produced. It will, in most cases, get
// called several times to produce one frame. This state is being kept track of by the value of
// activationReason. The first call to produce a certain frame n is always arInitial. In this state
// you should request all the input frames you need. Always do it in ascending order to play nice with the
// upstream filters.
// Once all frames are ready, the filter will be called with arAllFramesReady. It is now time to
// do the actual processing.
static const VSFrameRef *VS_CC f1qcleanGetFrame(int n, int activationReason, void **instanceData, void **frameData,
VSFrameContext *frameCtx, VSCore *core, const VSAPI *vsapi)
{
F1QClean *d = (F1QClean *) * instanceData;
if (activationReason == arInitial)
{
// Request the source frame on the first call
vsapi->requestFrameFilter(n, d->node, frameCtx);
}
else if (activationReason == arAllFramesReady)
{
const VSFrameRef* src = vsapi->getFrameFilter(n, d->node, frameCtx);
const VSFormat* fi = d->vi->format;
// process R,G,B or Y component only will be processed
int nplanes = fi->colorFamily == cmRGB ? 3 : fi->numPlanes;
VSFrameRef* dst = vsapi->copyFrame(src, core);
int nbytes = fi->bytesPerSample;
int nbits = fi->bitsPerSample;
for (int p = 0; p < nplanes; p++)
{
int ht = vsapi->getFrameHeight(src, p);
int wd = vsapi->getFrameWidth(src, p);
const uint8_t* srcp = vsapi->getReadPtr(src, p);
int src_stride = vsapi->getStride(src, p);
uint8_t* dstp = vsapi->getWritePtr(dst, p);
int pitch = src_stride / nbytes;
if (fi->sampleType == stInteger && nbits == 8)
{
uint8_t max = (1 << nbits) - 1, min = 0;
f1qCleanProcessFull(d, srcp, dstp, pitch,
wd, ht, min, max);
}
else if (fi->sampleType == stInteger && nbits > 8)
{
uint16_t* dp = (uint16_t*)dstp;
const uint16_t* sp = (const uint16_t*)srcp;
uint16_t max = (1 << nbits) - 1, min = 0;
f1qCleanProcessFull(d, sp, dp, pitch,
wd, ht, min, max);
}
else // float
{
float* dp = (float*)dstp;
const float* sp = (const float*)srcp;
float max = 1.0f, min = 0.0f;
f1qCleanProcessFull(d, sp, dp, pitch,
wd, ht, min, max);
}
}
// Release the source frame
vsapi->freeFrame(src);
return dst;
}
return 0;
}
// Free all allocated data on filter destruction
static void VS_CC f1qcleanFree(void *instanceData, VSCore *core, const VSAPI *vsapi)
{
F1QClean *d = (F1QClean *)instanceData;
vsapi->freeNode(d->node);
if (d->option == 2)
{
d->fftwf_free(d->ampSquareBuf);
vs_aligned_free(d->sortBuf);
}
d->fftwf_free(d->inBuf);
d->fftwf_free(d->outBuf);
d->fftwf_destroy_plan(d->pf);
d->fftwf_destroy_plan(d->pin);
if (d->hinstLib != NULL)
FreeLibrary(d->hinstLib);
free(d);
}
// This function is responsible for validating arguments and creating a new filter
static void VS_CC f1qcleanCreate(const VSMap *in, VSMap *out, void *userData, VSCore *core, const VSAPI *vsapi)
{
F1QClean d;
F1QClean *data;
int err;
//int temp;
// Get a clip reference from the input arguments. This must be freed later.
d.node = vsapi->propGetNode(in, "clip", 0, 0);
d.vi = vsapi->getVideoInfo(d.node);
// In this first version we only want to handle 8bit integer formats. Note that
// vi->format can be 0 if the input clip can change format midstream.
if (!isConstantFormat(d.vi) || d.vi->width == 0 || d.vi->height == 0
|| (d.vi->format->colorFamily != cmYUV && d.vi->format->colorFamily != cmGray
&& d.vi->format->colorFamily != cmRGB) )
{
vsapi->setError(out, "F1QClean: only RGB, Yuv or Gray color constant formats and const frame dimensions input supported");
vsapi->freeNode(d.node);
return;
}
if (d.vi->format->sampleType == stFloat && d.vi->format->bitsPerSample == 16)
{
vsapi->setError(out, "F1QClean: Half float formats not allowed ");
vsapi->freeNode(d.node);
return;
}
// If a property read fails for some reason (index out of bounds/wrong type)
// then err will have flags set to indicate why and 0 will be returned. This
// can be very useful to know when having optional arguments. Since we have
// strict checking because of what we wrote in the argument string, the only
// reason this could fail is when the value wasn't set by the user.
// And when it's not set we want it to default to enabled.
d.option = 2;
d.limit = 0;
d.span = 3;
d.from = int64ToIntS(vsapi->propGetInt(in, "span", 0, &err));
if (err)
d.span = 5;
else if (d.span < 3 || d.span > 63 || (d.span & 1 ) == 0 )
{
vsapi->setError(out, "F1QClean: span must be be odd number between 3 and 63 ");
vsapi->freeNode(d.node);
return;
}
d.from = int64ToIntS(vsapi->propGetInt(in, "fromf", 0, &err));
if (err)
d.from = 30;
else if (d.from < 10 + d.span / 2 || d.from > NYQUIST / 2 - 11 - d.span / 2)
{
vsapi->setError(out, "F1QClean: fromf must be be between 10 + half of span and less than 245 - half of span ");
vsapi->freeNode(d.node);
return;
}
d.upto = int64ToIntS(vsapi->propGetInt(in, "upto", 0, &err));
if (err)
d.upto = NYQUIST - 10 - d.span;
else if (d.upto < d.from + d.span || d.upto > NYQUIST - 10 - d.span)
{
vsapi->setError(out, "F1QClean: upto can be between fromf + span to 502 - span ");
vsapi->freeNode(d.node);
return;
}
// I usually keep the filter data struct on the stack and don't allocate it
// until all the input validation is done.
data = (F1QClean *) malloc(sizeof(d));
*data = d;
vsapi->createFilter(in, out, "F1QClean", f1qcleanInit, f1qcleanGetFrame, f1qcleanFree, fmParallelRequests, 0, data, core);
}
// registerFunc("F1QClean", "clip:clip;span:int:opt;fromf:int:opt;upto:int:opt;", f1qcleanCreate, 0, plugin);
// This function is responsible for validating arguments and creating a new filter
static void VS_CC f1qlimitCreate(const VSMap* in, VSMap* out, void* userData, VSCore* core, const VSAPI* vsapi)
{
F1QClean d;
F1QClean* data;
int err;
//int temp;
// Get a clip reference from the input arguments. This must be freed later.
d.node = vsapi->propGetNode(in, "clip", 0, 0);
d.vi = vsapi->getVideoInfo(d.node);
// vi->format can be 0 if the input clip can change format midstream.
if (!isConstantFormat(d.vi) || d.vi->width == 0 || d.vi->height == 0
|| (d.vi->format->colorFamily != cmYUV && d.vi->format->colorFamily != cmGray
&& d.vi->format->colorFamily != cmRGB))
{
vsapi->setError(out, "F1QLimit: only RGB, Yuv or Gray color constant formats and const frame dimensions input supported");
vsapi->freeNode(d.node);
return;
}
if (d.vi->format->sampleType == stFloat && d.vi->format->bitsPerSample == 16)
{
vsapi->setError(out, "F1QLimit: Half float formats not allowed ");
vsapi->freeNode(d.node);
return;
}
// If a property read fails for some reason (index out of bounds/wrong type)
// then err will have flags set to indicate why and 0 will be returned. This
// can be very useful to know when having optional arguments. Since we have
// strict checking because of what we wrote in the argument string, the only
// reason this could fail is when the value wasn't set by the user.
// And when it's not set we want it to default to enabled.
d.option = 1;
d.span = int64ToIntS(vsapi->propGetInt(in, "span", 0, &err));
if (err)
d.span = 15;
else if (d.span < 3 || d.span > NYQUIST / 8 || (d.span & 1) == 0)
{
vsapi->setError(out, "F1QLimit: span must be odd number 3 to 63");
vsapi->freeNode(d.node);
return;
}
d.span |= 1; // make it odd number
d.limit = int64ToIntS(vsapi->propGetInt(in, "limit", 0, &err));
if (err)
d.limit = 50;
else if (d.limit < 0 || d.limit > 99)
{
vsapi->setError(out, "F1QLimit: limit percentage value can be 0 to 99");
vsapi->freeNode(d.node);
return;
}
d.nfrequencies = vsapi->propNumElements(in, "freqs");
if (d.nfrequencies == 0 || d.nfrequencies > 10)
{
vsapi->setError(out, "F1QLimit: for option 1, at least one and not more than 10 freqs must be specified in the array");
vsapi->freeNode(d.node);
return;
}
for (int i = 0; i < d.nfrequencies; i++)
{
d.frequency[i] = int64ToIntS(vsapi->propGetInt(in, "freqs", i, 0));
if (d.frequency[i] < 10 + d.span / 2 || d.frequency[i] > NYQUIST - 10 - d.span / 2)
{
vsapi->setError(out, "F1QLimit: freqs must be between 10 + half of span and 502 - half of span");
vsapi->freeNode(d.node);
return;
}
}
// I usually keep the filter data struct on the stack and don't allocate it
// until all the input validation is done.
data = (F1QClean*)malloc(sizeof(d));
*data = d;
vsapi->createFilter(in, out, "F1QLimit", f1qcleanInit, f1qcleanGetFrame, f1qcleanFree, fmParallelRequests, 0, data, core);
}
// registerFunc("F1QLimit", "clip:clip;span:int:opt;freqs:int[];", f1qlimitCreate, 0, plugin);