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// Copyright (c) 2012-2017 VideoStitch SAS
// Copyright (c) 2018 stitchEm
#include "gradientImageMerger.hpp"
#include "maskMerger.hpp"
#include "imageMapping.hpp"
#include "inputsMap.hpp"
#include "inputsMapCubemap.hpp"
#include "parse/json.hpp"
#include "gpu/image/blur.hpp"
#include "gpu/image/imgExtract.hpp"
#include "gpu/image/imgInsert.hpp"
#include "gpu/buffer.hpp"
#include "gpu/core1/voronoi.hpp"
#include "libvideostitch/panoDef.hpp"
#include "libvideostitch/profile.hpp"
#include "libvideostitch/logging.hpp"
#include "libvideostitch/parse.hpp"
#include "libvideostitch/ptv.hpp"
#include <memory>
#include <sstream>
//#define DEBUGMASKS
#ifdef DEBUGMASKS
#include "util/pnm.hpp"
#include "util/debugUtils.hpp"
#endif
namespace VideoStitch {
namespace Core {
GradientImageMerger::Factory::Factory(int feather, MaskMerger::MaskMergerType maskMergerType)
: feather(feather), maskMergerType(maskMergerType) {}
Potential<ImageMerger> GradientImageMerger::Factory::create(const PanoDefinition& pano, ImageMapping& fromIm,
const ImageMerger* to, bool) const {
return Potential<ImageMerger>(new GradientImageMerger(pano, fromIm, to, feather, maskMergerType));
}
ImageMergerFactory* GradientImageMerger::Factory::clone() const { return new Factory(feather, maskMergerType); }
std::string GradientImageMerger::Factory::hash() const {
std::stringstream ss;
ss << "v1_GradientImageMerger" << feather << " mask_merger" << (int)maskMergerType;
return ss.str();
}
Ptv::Value* GradientImageMerger::Factory::serialize() const {
Ptv::Value* res = Ptv::Value::emptyObject();
res->push("type", new Parse::JsonValue("gradient"));
res->push("feather", new Parse::JsonValue(feather));
res->push("mask_merger", new Parse::JsonValue((int)maskMergerType));
return res;
}
Potential<ImageMergerFactory> GradientImageMerger::Factory::parse(const Ptv::Value& value) {
int feather = DEFAULT_BLENDING_FEATHER;
if (Parse::populateInt("GradientImageMergerFactory", value, "feather", feather, false) ==
Parse::PopulateResult_WrongType) {
return {Origin::Stitcher, ErrType::InvalidConfiguration,
"Invalid type for 'feather' configuration, expected integer"};
}
MaskMerger::MaskMergerType maskMergerType;
int maskType;
switch (Parse::populateInt("GradientImageMergerFactory", value, "mask_merger", maskType, false)) {
case Parse::PopulateResult_WrongType:
return {Origin::Stitcher, ErrType::InvalidConfiguration,
"Invalid type for 'mask_merger' configuration, expected integer"};
case Parse::PopulateResult_DoesNotExist:
maskMergerType = MaskMerger::getDefaultMaskMerger();
break;
default:
maskMergerType = (MaskMerger::MaskMergerType)maskType;
break;
}
feather = std::max(feather, 0);
feather = std::min(feather, 100);
return Potential<ImageMergerFactory>(new GradientImageMerger::Factory(feather, maskMergerType));
}
Status GradientImageMerger::mergeAsync(TextureTarget t, const PanoDefinition& pano, GPU::Buffer<uint32_t> pbo,
GPU::UniqueBuffer<uint32_t>&, const ImageMapping& fromIm,
bool /* isFirstMerger */, GPU::Stream stream) const {
if (fromIm.getOutputRect(t).empty()) {
return Status::OK();
}
// insert into pano image
size_t width, height;
if (t == EQUIRECTANGULAR) {
width = pano.getWidth();
height = pano.getHeight();
if (maskMerger->getAlpha(t).wasAllocated() && (GradientImageMerger::warpMergeType() == Format::Gradient)) {
/* merge was already done at the same time as warp */
return Status::OK();
}
} else {
width = pano.getLength();
height = pano.getLength();
}
return Image::imgInsertInto(pbo, width, height, fromIm.getDeviceOutputBuffer(t), fromIm.getOutputRect(t).getWidth(),
fromIm.getOutputRect(t).getHeight(), fromIm.getOutputRect(t).left(),
fromIm.getOutputRect(t).top(), maskMerger->getAlpha(t),
fromIm.getOutputRect(t).right() >= (int64_t)pano.getLength(), false, stream);
}
GradientImageMerger::GradientImageMerger(const PanoDefinition& /*pano*/, ImageMapping& fromIm, const ImageMerger* to,
int feather, MaskMerger::MaskMergerType maskMergerType)
: ImageMerger(fromIm.getImId(), to) {
maskMerger.reset(MaskMerger::factor(maskMergerType));
maskMerger->setParameters(std::vector<double>{(double)(feather)});
}
GradientImageMerger::~GradientImageMerger() {}
Status GradientImageMerger::setup(const PanoDefinition& pano, InputsMap& inputsMap, const ImageMapping& fromIm,
GPU::Stream stream) {
SIMPLEPROFILE_MS("GradientImageMerger::setup() : Compute Mask");
if (fromIm.getOutputRect(EQUIRECTANGULAR).empty()) {
return Status::OK();
}
GPU::Buffer<uint32_t> inputsMask = inputsMap.getMask();
FAIL_RETURN(maskMerger->setupMask(pano, inputsMask, fromIm, to, stream));
// make sure kernels are done before destroying the tmp buffers
FAIL_RETURN(stream.synchronize());
#ifdef DEBUGMASKS
if (!fromIm.getOutputRect(EQUIRECTANGULAR).empty()) {
std::string outputFile =
"gradient-mask-" + std::to_string(fromIm.getImId()) + "-" + std::to_string(EQUIRECTANGULAR) + ".png";
Debug::dumpMonochromeDeviceBuffer<Debug::linear>(outputFile, maskMerger->getAlpha(EQUIRECTANGULAR),
fromIm.getOutputRect(EQUIRECTANGULAR).getWidth(),
fromIm.getOutputRect(EQUIRECTANGULAR).getHeight());
}
#endif
return Status::OK();
}
Status GradientImageMerger::setupCubemap(const PanoDefinition& pano, InputsMap& inputsMap, const ImageMapping& fromIm,
GPU::Stream stream) {
SIMPLEPROFILE_MS("GradientImageMerger::setup() : Compute Mask");
GPU::Buffer<uint32_t> inputsMask = inputsMap.getMask();
FAIL_RETURN(maskMerger->setupMaskCubemap(pano, inputsMask, fromIm, to, stream));
// make sure kernels are done before destroying the tmp buffers
FAIL_RETURN(stream.synchronize());
#ifdef DEBUGMASKS
if (!fromIm.getOutputRect(target).empty()) {
std::string outputFile =
"gradient-mask-" + std::to_string(fromIm.getImId()) + "-" + std::to_string(target) + ".png";
Debug::dumpMonochromeDeviceBuffer<Debug::linear>(outputFile, maskMerger->getAlpha(target),
fromIm.getOutputRect(target).getWidth(),
fromIm.getOutputRect(target).getHeight());
}
#endif
return Status::OK();
}
} // namespace Core
} // namespace VideoStitch