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// Copyright 2017 The Draco Authors.
//
// 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 "draco/compression/decode.h"
#include <cinttypes>
#include <fstream>
#include <sstream>
#include "draco/core/draco_test_base.h"
#include "draco/core/draco_test_utils.h"
namespace {
class DecodeTest : public ::testing::Test {
protected:
DecodeTest() {}
};
#ifdef DRACO_BACKWARDS_COMPATIBILITY_SUPPORTED
TEST_F(DecodeTest, TestSkipAttributeTransform) {
const std::string file_name = "test_nm_quant.0.9.0.drc";
// Tests that decoders can successfully skip attribute transform.
std::ifstream input_file(draco::GetTestFileFullPath(file_name),
std::ios::binary);
ASSERT_TRUE(input_file);
// Read the file stream into a buffer.
std::streampos file_size = 0;
input_file.seekg(0, std::ios::end);
file_size = input_file.tellg() - file_size;
input_file.seekg(0, std::ios::beg);
std::vector<char> data(file_size);
input_file.read(data.data(), file_size);
ASSERT_FALSE(data.empty());
// Create a draco decoding buffer. Note that no data is copied in this step.
draco::DecoderBuffer buffer;
buffer.Init(data.data(), data.size());
draco::Decoder decoder;
// Make sure we skip dequantization for the position attribute.
decoder.SetSkipAttributeTransform(draco::GeometryAttribute::POSITION);
// Decode the input data into a geometry.
std::unique_ptr<draco::PointCloud> pc =
decoder.DecodePointCloudFromBuffer(&buffer).value();
ASSERT_NE(pc, nullptr);
const draco::PointAttribute *const pos_att =
pc->GetNamedAttribute(draco::GeometryAttribute::POSITION);
ASSERT_NE(pos_att, nullptr);
// Ensure the position attribute is of type int32_t and that it has a valid
// attribute transform.
ASSERT_EQ(pos_att->data_type(), draco::DT_INT32);
ASSERT_NE(pos_att->GetAttributeTransformData(), nullptr);
// Normal attribute should be left transformed.
const draco::PointAttribute *const norm_att =
pc->GetNamedAttribute(draco::GeometryAttribute::NORMAL);
ASSERT_EQ(norm_att->data_type(), draco::DT_FLOAT32);
ASSERT_EQ(norm_att->GetAttributeTransformData(), nullptr);
}
#endif
void TestSkipAttributeTransformOnPointCloudWithColor(const std::string &file) {
std::ifstream input_file(draco::GetTestFileFullPath(file), std::ios::binary);
ASSERT_TRUE(input_file);
// Read the file stream into a buffer.
std::streampos file_size = 0;
input_file.seekg(0, std::ios::end);
file_size = input_file.tellg() - file_size;
input_file.seekg(0, std::ios::beg);
std::vector<char> data(file_size);
input_file.read(data.data(), file_size);
ASSERT_FALSE(data.empty());
// Create a draco decoding buffer. Note that no data is copied in this step.
draco::DecoderBuffer buffer;
buffer.Init(data.data(), data.size());
draco::Decoder decoder;
// Make sure we skip dequantization for the position attribute.
decoder.SetSkipAttributeTransform(draco::GeometryAttribute::POSITION);
// Decode the input data into a geometry.
std::unique_ptr<draco::PointCloud> pc =
decoder.DecodePointCloudFromBuffer(&buffer).value();
ASSERT_NE(pc, nullptr);
const draco::PointAttribute *const pos_att =
pc->GetNamedAttribute(draco::GeometryAttribute::POSITION);
ASSERT_NE(pos_att, nullptr);
// Ensure the position attribute is of type int32_t or uint32_t and that it
// has a valid attribute transform.
ASSERT_TRUE(pos_att->data_type() == draco::DT_INT32 ||
pos_att->data_type() == draco::DT_UINT32);
ASSERT_NE(pos_att->GetAttributeTransformData(), nullptr);
const draco::PointAttribute *const clr_att =
pc->GetNamedAttribute(draco::GeometryAttribute::COLOR);
ASSERT_EQ(clr_att->data_type(), draco::DT_UINT8);
// Ensure the color attribute was decoded correctly. Perform the decoding
// again without skipping the position dequantization and compare the
// attribute values.
draco::DecoderBuffer buffer_2;
buffer_2.Init(data.data(), data.size());
draco::Decoder decoder_2;
// Decode the input data into a geometry.
std::unique_ptr<draco::PointCloud> pc_2 =
decoder_2.DecodePointCloudFromBuffer(&buffer_2).value();
ASSERT_NE(pc_2, nullptr);
const draco::PointAttribute *const clr_att_2 =
pc_2->GetNamedAttribute(draco::GeometryAttribute::COLOR);
ASSERT_NE(clr_att_2, nullptr);
for (draco::PointIndex pi(0); pi < pc_2->num_points(); ++pi) {
// Colors should be exactly the same for both cases.
ASSERT_EQ(std::memcmp(clr_att->GetAddress(clr_att->mapped_index(pi)),
clr_att_2->GetAddress(clr_att_2->mapped_index(pi)),
clr_att->byte_stride()),
0);
}
}
TEST_F(DecodeTest, TestSkipAttributeTransformOnPointCloud) {
// Tests that decoders can successfully skip attribute transform on a point
// cloud with multiple attributes encoded with one attributes encoder.
TestSkipAttributeTransformOnPointCloudWithColor("pc_color.drc");
TestSkipAttributeTransformOnPointCloudWithColor("pc_kd_color.drc");
}
TEST_F(DecodeTest, TestSkipAttributeTransformWithNoQuantization) {
// Tests that decoders can successfully skip attribute transform even though
// the input model was not quantized (it has no attribute transform).
const std::string file_name = "point_cloud_no_qp.drc";
std::ifstream input_file(draco::GetTestFileFullPath(file_name),
std::ios::binary);
ASSERT_TRUE(input_file);
// Read the file stream into a buffer.
std::streampos file_size = 0;
input_file.seekg(0, std::ios::end);
file_size = input_file.tellg() - file_size;
input_file.seekg(0, std::ios::beg);
std::vector<char> data(file_size);
input_file.read(data.data(), file_size);
ASSERT_FALSE(data.empty());
// Create a draco decoding buffer. Note that no data is copied in this step.
draco::DecoderBuffer buffer;
buffer.Init(data.data(), data.size());
draco::Decoder decoder;
// Make sure we skip dequantization for the position attribute.
decoder.SetSkipAttributeTransform(draco::GeometryAttribute::POSITION);
// Decode the input data into a geometry.
std::unique_ptr<draco::PointCloud> pc =
decoder.DecodePointCloudFromBuffer(&buffer).value();
ASSERT_NE(pc, nullptr);
const draco::PointAttribute *const pos_att =
pc->GetNamedAttribute(draco::GeometryAttribute::POSITION);
ASSERT_NE(pos_att, nullptr);
// Ensure the position attribute is of type float32 since the attribute was
// not quantized.
ASSERT_EQ(pos_att->data_type(), draco::DT_FLOAT32);
// Make sure there is no attribute transform available for the attribute.
ASSERT_EQ(pos_att->GetAttributeTransformData(), nullptr);
}
} // namespace
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