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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "alembic/lib/Alembic/AbcCoreFactory/All.h"
#include "alembic/lib/Alembic/AbcCoreOgawa/All.h"
#include "alembic/lib/Alembic/AbcGeom/All.h"
#include "alembic/lib/Alembic/AbcMaterial/All.h"
#include "fuzzer_temp_file.h"
using Alembic::AbcCoreAbstract::PropertyHeader;
using Alembic::AbcCoreAbstract::PropertyType;
using Alembic::AbcCoreFactory::IFactory;
using Alembic::AbcGeom::C4fArraySamplePtr;
using Alembic::AbcGeom::IArchive;
using Alembic::AbcGeom::IC4fGeomParam;
using Alembic::AbcGeom::ICompoundProperty;
using Alembic::AbcGeom::ICurves;
using Alembic::AbcGeom::ICurvesSchema;
using Alembic::AbcGeom::IFaceSet;
using Alembic::AbcGeom::IFaceSetSchema;
using Alembic::AbcGeom::IGeomBaseSchema;
using Alembic::AbcGeom::IN3fGeomParam;
using Alembic::AbcGeom::index_t;
using Alembic::AbcGeom::Int32ArraySamplePtr;
using Alembic::AbcGeom::IObject;
using Alembic::AbcGeom::IPolyMesh;
using Alembic::AbcGeom::IPolyMeshSchema;
using Alembic::AbcGeom::ISubD;
using Alembic::AbcGeom::ISubDSchema;
using Alembic::AbcGeom::IV2fGeomParam;
using Alembic::AbcGeom::IXform;
using Alembic::AbcGeom::IXformSchema;
using Alembic::AbcGeom::M44d;
using Alembic::AbcGeom::M44f;
using Alembic::AbcGeom::N3fArraySamplePtr;
using Alembic::AbcGeom::ObjectHeader;
using Alembic::AbcGeom::P3fArraySamplePtr;
using Alembic::AbcGeom::UInt32ArraySamplePtr;
using Alembic::AbcGeom::V2fArraySamplePtr;
using Alembic::AbcMaterial::IMaterial;
using Alembic::AbcMaterial::IMaterialSchema;
template <typename T> void dumpAttributes(T const &schema) {
const size_t meshPropertyCount = schema.getNumProperties();
for (size_t p = 0; p < meshPropertyCount; p++) {
const PropertyHeader &header = schema.getPropertyHeader(p);
const PropertyType pType = header.getPropertyType();
const std::string &name = header.getName();
if (name == "P") {
schema.getNumSamples();
} else if (name == "uv" || name == "st") {
schema.getUVsParam().getNumSamples();
} else if (name == ".arbGeomParams") {
// additional geometry elements (color sets, additional texture
// coordinates)
const ICompoundProperty geoParam = schema.getArbGeomParams();
const size_t geoPropCount = geoParam.getNumProperties();
for (size_t g = 0; g < geoPropCount; g++) {
const PropertyHeader &headerGeo = geoParam.getPropertyHeader(g);
const std::string &nameGeo = headerGeo.getName();
}
}
}
}
void dumpPolyMesh(const IObject &node) {
const ObjectHeader &header = node.getHeader();
const IPolyMesh mesh(node.getParent(), header.getName());
const IPolyMeshSchema &schema = mesh.getSchema();
// Mesh properties
dumpAttributes(schema);
}
void dumpSubD(const IObject &node) {
const ObjectHeader &header = node.getHeader();
const ISubD mesh(node.getParent(), header.getName());
const ISubDSchema &schema = mesh.getSchema();
dumpAttributes(schema);
schema.getSubdivisionSchemeProperty();
schema.getFaceVaryingInterpolateBoundaryProperty();
schema.getFaceVaryingPropagateCornersProperty();
schema.getInterpolateBoundaryProperty();
}
void dumpFaceSet(const IObject &node) {
const ObjectHeader &header = node.getHeader();
const IFaceSet faceSet(node.getParent(), header.getName());
const IFaceSetSchema &schema = faceSet.getSchema();
schema.getNumSamples();
}
void dumpCurves(const IObject &node) {
const ObjectHeader &header = node.getHeader();
const ICurves curves(node.getParent(), header.getName());
const ICurvesSchema &schema = curves.getSchema();
dumpAttributes(schema);
}
void dumpXform(const IObject &node) {
const ObjectHeader &header = node.getHeader();
const IXform xform(node.getParent(), header.getName());
const IXformSchema &schema = xform.getSchema();
schema.getNumSamples();
schema.getNumOps();
}
void dumpMaterial(const IObject &node) {
const ObjectHeader &header = node.getHeader();
IMaterial material(node.getParent(), header.getName());
IMaterialSchema &schema = material.getSchema();
std::vector<std::string> targetNames;
schema.getTargetNames(targetNames);
for (const std::string &target : targetNames) {
std::vector<std::string> shaderTypes;
schema.getShaderTypesForTarget(target, shaderTypes);
const size_t shaderTypeCount = shaderTypes.size();
for (size_t s = 0; s < shaderTypeCount; s++) {
ICompoundProperty parameters =
schema.getShaderParameters(target, shaderTypes[s]);
const size_t parameterCount = parameters.getNumProperties();
}
}
}
void dumpNodes(const IObject &node) {
const ObjectHeader &header = node.getHeader();
// Dump the general node information.
header.getName();
header.getFullName();
header.getMetaData().serialize();
// Dump the type specific information.
if (Alembic::AbcGeom::IPolyMesh::matches(header)) {
dumpPolyMesh(node);
} else if (Alembic::AbcGeom::ISubD::matches(header)) {
dumpSubD(node);
} else if (Alembic::AbcGeom::IFaceSet::matches(header)) {
dumpFaceSet(node);
} else if (Alembic::AbcGeom::ICurves::matches(header)) {
dumpCurves(node);
} else if (Alembic::AbcGeom::IXform::matches(header)) {
dumpXform(node);
} else if (Alembic::AbcMaterial::IMaterial::matches(header)) {
dumpMaterial(node);
} else { // Miscellaneous nodes such as the root.
;
}
// Dump the child headers.
const size_t childCount = node.getNumChildren();
for (size_t i = 0; i < childCount; i++) {
dumpNodes(node.getChild(i));
}
}
void dumpInfo(const char *file) {
// Load the Alembic archive and verify that it is valid.
IFactory factory;
IArchive archive = factory.getArchive(file);
if (archive.valid()) {
archive.getName();
dumpNodes(archive.getTop());
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
FuzzerTemporaryFile tempFile(data, size);
dumpInfo(tempFile.filename());
return 0;
}
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