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modVeed.cpp
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modVeed.cpp
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/******************************************************************************
veed filter plugin for vapoursynth by V.C.Mohan
Removes Greenish noise or reddish noise. from images
A gentle filter. Thread safe
Author V.C.Mohan
20 Aug 2020
Copyright (C) <2006 - 2020> <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/>.
For details of how to contact author see <http://www.avisynth.org/vcmohan>
*************************************************************************************************/
typedef struct {
VSNodeRef *node;
const VSVideoInfo *vi;
int str; //strength of filter. 1 to 8
int rad; // pixels in radius of circle that influence
int planes[3]; // planes to be processed
int plimit[3]; // plus limit from ideal
int mlimit[3]; // minus limit fro ideal
float * kern;
int ksize;
}VeedData;
//-----------------------------------------------------------------------------------------------------
template <typename finc>
void VeedOut(finc * dp, const int dpitch,
finc * wp, const int wpitch,
const finc * sp, const int spitch,
const int ht, const int wd,
const float *kr, int span,
finc low, finc high);
template <typename finc>
void VeedOut(finc * dp, const int dpitch,
finc * wp, const int wpitch,
const finc * sp, const int spitch,
const int ht, const int wd,
const float *kr, int span,
finc low, finc high)
{
int span2 = (span >> 1);
int offset[17];
for (int i = -span2; i < span2 + 1; i ++)
{
offset[i + span2] = i ;
}
// along horizontal
const finc *spp = sp;
finc *wpp = wp;
finc *dpp = dp;
for (int h = 0; h < ht; h ++)
{
// leave out left and right border pixels
for (int w = span2; w < wd - span2; w ++)
{
float val = 0;
for (int i = 0; i < span; i ++)
{
val += spp[w + offset[i]] * kr[i];
}
wpp[w] = val;
}
spp += spitch;
wpp += wpitch;
}
// vertical direction. Pre calculate offsets to save multiplication
for (int i = -span2; i < span2 + 1; i ++)
{
offset[i + span2] = i * wpitch;
}
for( int w = span2; w < wd - span2; w ++)
{
finc *wpp = wp + span2 * wpitch;
finc *dpp = dp + span2 * dpitch;
const finc *spp = sp + span2 * spitch;
// deveed along vertical
for (int h = span2; h < ht - span2; h ++)
{
float val = 0;
for (int i = 0; i < span; i ++)
{
val += wpp[offset[i]] * kr[i ];
}
if ((spp[w] - val) > low)
{
dpp[w] = spp[w] - low;
}
else if ((val - spp[w]) > high)
{
dpp[w] = spp[w] + high;
}
else
{
dpp[w] = val;
}
spp += spitch;
wpp += wpitch;
dpp += dpitch;
}
}
}
//----------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------
// 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 veedInit
(VSMap *in, VSMap *out, void **instanceData,
VSNode *node, VSCore *core, const VSAPI *vsapi)
{
VeedData *d = (VeedData *) * instanceData;
vsapi->setVideoInfo(d->vi, 1, node);
d->ksize = 2 * d->rad + 1;
d->kern = vs_aligned_malloc<float>(sizeof(float)*d->ksize, 32);
for(int i = 0; i < d->ksize; i ++)
{
d->kern[i] = pow (2.71828, -(0.5 * (i - d->ksize / 2) * (i - d->ksize / 2) )/(d->str*d->str)) / (d->str * sqrt(6.2831853));
}
}
//---------------------------------------------------------------------------------
// 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 input frames you need. Always do it i ascending order to play nice with the
// upstream filters.
// Once all frames are ready the the filter will be called with arAllFramesReady. It is now time to
// do the actual processing.
static const VSFrameRef *VS_CC veedGetFrame
(int n, int activationReason, void **instanceData,
void **frameData, VSFrameContext *frameCtx,
VSCore *core, const VSAPI *vsapi)
{
VeedData *d = (VeedData *) * 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);
// The reason we query this on a per frame basis is because we want our filter
// to accept clips with varying dimensions. If we reject such content using d->vi
// would be better.
const VSFormat *fi = d->vi->format;
int height = vsapi->getFrameHeight(src, 0);
int width = vsapi->getFrameWidth(src, 0);
// When creating a new frame for output it is VERY EXTREMELY SUPER IMPORTANT to
// supply the "dominant" source frame to copy properties from. Frame props
// are an essential part of the filter chain and you should NEVER break it.
VSFrameRef * dst = vsapi->copyFrame(src, core);
VSFrameRef *work = vsapi->newVideoFrame(fi, width, height, src, core);
// It's processing loop time!
// Loop over all the planes
for (int plane = 0; plane < fi->numPlanes; plane++)
{
const uint8_t *srcp = vsapi->getReadPtr(src, plane);
int src_stride = vsapi->getStride(src, plane);
uint8_t *dstp = vsapi->getWritePtr(dst, plane);
int dst_stride = vsapi->getStride(dst, plane);
uint8_t *workp = vsapi->getWritePtr(work, plane);
int work_stride = vsapi->getStride(work, plane);
int bht = vsapi->getFrameHeight(src, plane);
int bwd = vsapi->getFrameWidth(src, plane);
int samplesize = fi->bytesPerSample;
int spitch = src_stride / samplesize;
int dpitch = dst_stride / samplesize;
int wpitch = work_stride / samplesize;
int nb = fi->bitsPerSample;
if (d->planes[plane] == 0)
continue;
vs_bitblt(workp, work_stride, srcp, src_stride, bwd * samplesize, bht);
if (fi->sampleType == stInteger)
{
if(fi->bitsPerSample == 8)
{
// 8 bit integer sample
uint8_t low = ((1<< nb) * d->mlimit[plane])/ 200;
uint8_t high = ((1<< nb) * d->plimit[plane])/ 200;
VeedOut(dstp, dpitch, workp, wpitch, srcp, spitch,
bht, bwd, d->kern, d->ksize, low, high);
}
else // if(fi->bitsPerSample > 8)
{
uint16_t low = ((1<< nb) * d->mlimit[plane])/ 200;
uint16_t high = ((1<< nb) * d->plimit[plane])/ 200;
uint16_t * dp = (uint16_t *) dstp;
uint16_t * wp = (uint16_t *) workp;
const uint16_t * sp = ( const uint16_t *) srcp;
VeedOut(dp, dpitch, wp, wpitch, sp, spitch,
bht, bwd, d->kern, d->ksize, low, high);
}
} // integer
else // if(fi->sampleType == stfloat)
{
float low = (d->mlimit[plane])/ 200;
float high = (d->plimit[plane])/ 200;
float * dp = (float *) dstp;
float * wp = (float *) workp;
const float * sp = ( const float *) srcp;
VeedOut(dp, dpitch, wp, wpitch, sp, spitch,
bht, bwd, d->kern, d->ksize, low, high);
}
} // plane
// Release the source frame
vsapi->freeFrame(src);
vsapi->freeFrame(work);
// A reference is consumed when it is returned so saving the dst ref somewhere
// and reusing it is not allowed.
return dst;
}
return 0;
}
//-------------------------------------------------------------------
// Free all allocated data on filter destruction
static void VS_CC veedFree(void *instanceData, VSCore *core, const VSAPI *vsapi)
{
VeedData *d = (VeedData *)instanceData;
vsapi->freeNode(d->node);
vs_aligned_free (d->kern);
free(d);
}
// This function is responsible for validating arguments and creating a new filter
static void VS_CC veedCreate(const VSMap *in,
VSMap *out, void *userData, VSCore *core,
const VSAPI *vsapi)
{
VeedData d;
VeedData *data;
int temp;
int err;
// 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);
// Note that
// vi->format can be 0 if the input clip can change format midstream.
if (d.vi->format->colorFamily == cmCompat) {
vsapi->setError(out, "veed: Compat format not accepted.");
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.rad = vsapi->propGetInt(in, "rad", 0, &err);
if (err)
d.rad = 5;
// the only allowed
if (d.rad < 1 || d.rad > 8 )
{
vsapi->setError(out,"veed: rad value can be 1 to 8 only");
vsapi->freeNode(d.node);
return;
}
d.str = vsapi->propGetInt(in, "str", 0, &err);
if (err)
d.str = 5;
// the only allowed
if (d.str < 1 || d.str > 8 )
{
vsapi->setError(out,"veed: str value can be 1 to 8 only");
vsapi->freeNode(d.node);
return;
}
if ( pow(2.71828, -(0.5 * (d.rad * d.rad) / (d.str*d.str)) / (d.str * sqrt(6.2831853))) < 2.0 / 255)
{
vsapi->setError(out,"veed: Either decrease rad or increase str to prevent wasteful processing.");
vsapi->freeNode(d.node);
return;
}
for ( int i = 0; i < 3; i ++)
{
d.planes[i] = !!vsapi->propGetInt(in, "planes", i, &err);
if (err)
d.planes[i] = 1;
// the only allowed
if (d.planes[i] < 0 || d.planes[i] > 1 )
{
vsapi->setError(out,"veed: planes value can be 0 or 1 only");
vsapi->freeNode(d.node);
return;
}
d.plimit[i] = vsapi->propGetInt(in, "plimit", i, &err);
if (err)
d.plimit[i] = 3;
// the only allowed
if (d.plimit[i] < 0 || d.plimit[i] > 10 )
{
vsapi->setError(out,"veed: plimit values can be 0 to 10 only");
vsapi->freeNode(d.node);
return;
}
d.mlimit[i] = vsapi->propGetInt(in, "mlimit", i, &err);
if (err)
d.mlimit[i] = 3;
// the only allowed
if (d.mlimit[i] < 0 || d.mlimit[i] > 10 )
{
vsapi->setError(out,"veed: mlimit values can be 0 to 10 only");
vsapi->freeNode(d.node);
return;
}
}
if(d.planes[0] == 0 && d.planes[1] == 0 && d.planes[2] == 0 || (d.vi->format->colorFamily == cmGray && d.planes[0] == 0))
{
vsapi->setError(out,"veed: values of all planes are zero. At least one should be set to 1");
vsapi->freeNode(d.node);
return;
}
data = (VeedData * ) malloc(sizeof(d));
*data = d;
// Create a new filter and returns a reference to it. Always pass on the in and out
// arguments or unexpected things may happen. The name should be something that's
// easy to connect to the filter, like its function name.
// The three function pointers handle initialization, frame processing and filter destruction.
// The filtermode is very important to get right as it controls how threading of the filter
// is handled. In general you should only use fmParallel whenever possible. This is if you
// need to modify no shared data at all when the filter is running.
// For more complicated filters fmParallelRequests is usually easier to achieve as an
// be prefetched in parallel but the actual processing is serialized.
// The others can be considered special cases where fmSerial is useful to source filters and
// fmUnordered is useful when a filter's state may change even when deciding which frames to
// prefetch (such as a cache filter).
// If you filter is really fast (such as a filter that only resorts frames) you should set the
// nfNoCache flag to make the caching work smoother.
vsapi->createFilter(in, out, "veed", veedInit,
veedGetFrame, veedFree,
fmParallel, 0, data, core);
return;
}
/*
VS_EXTERNAL_API(void) VapourSynthPluginInit(VSConfigPlugin configFunc, VSRegisterFunction registerFunc, VSPlugin *plugin)
{
configFunc("vc.mohan.dns", "veed", "VapourSynth Veed", VAPOURSYNTH_API_VERSION, 1, plugin);
registerFunc("Veed", "clip:clip;str:int:opt;rad:int:opt;planes:int[]:opt;plimit:int[]:opt;mlimit:int[]:opt;", veedCreate, 0, plugin);
}
*/