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#include "dynamic_depth/point_cloud.h"
#include "android-base/logging.h"
#include "dynamic_depth/const.h"
#include "strings/numbers.h"
#include "xmpmeta/base64.h"
#include "xmpmeta/xml/utils.h"
using photos_editing_formats::xml::Deserializer;
using photos_editing_formats::xml::Serializer;
namespace photos_editing_formats {
namespace dynamic_depth {
namespace {
const char kPropertyPrefix[] = "PointCloud";
const char kPointCount[] = "PointCount";
const char kPoints[] = "Points";
const char kMetric[] = "Metric";
const char kNamespaceHref[] = "http://ns.google.com/photos/dd/1.0/pointcloud/";
} // namespace
// Private constructor.
PointCloud::PointCloud() : metric_(false) {}
// Public methods.
void PointCloud::GetNamespaces(
std::unordered_map<string, string>* ns_name_href_map) {
if (ns_name_href_map == nullptr) {
LOG(ERROR) << "Namespace list or own namespace is null";
return;
}
ns_name_href_map->insert(
std::pair<string, string>(kPropertyPrefix, kNamespaceHref));
}
std::unique_ptr<PointCloud> PointCloud::FromData(
const std::vector<float>& points, bool metric) {
if (points.empty()) {
LOG(ERROR) << "No point data given";
return nullptr;
}
if (points.size() % 3 != 0) {
LOG(ERROR) << "Points must be (x, y, z) tuples, so the size must be "
<< "divisible by 3, got " << points.size();
return nullptr;
}
std::unique_ptr<PointCloud> point_cloud(new PointCloud());
point_cloud->points_ = points;
point_cloud->metric_ = metric;
return point_cloud;
}
std::unique_ptr<PointCloud> PointCloud::FromDeserializer(
const Deserializer& parent_deserializer) {
std::unique_ptr<Deserializer> deserializer =
parent_deserializer.CreateDeserializer(
DynamicDepthConst::Namespace(kPropertyPrefix), kPropertyPrefix);
if (deserializer == nullptr) {
return nullptr;
}
std::unique_ptr<PointCloud> point_cloud(new PointCloud());
if (!point_cloud->ParseFields(*deserializer)) {
return nullptr;
}
return point_cloud;
}
int PointCloud::GetPointCount() const {
return static_cast<int>(points_.size() / 3);
}
const std::vector<float>& PointCloud::GetPoints() const { return points_; }
bool PointCloud::GetMetric() const { return metric_; }
bool PointCloud::Serialize(Serializer* serializer) const {
if (serializer == nullptr) {
LOG(ERROR) << "Serializer is null";
return false;
}
if (points_.empty()) {
LOG(ERROR) << "No points in the PointCloud to serialize";
return false;
}
// No error checking (e.g. points_.size() % 3 == 0), because serialization
// shouldn't be blocked by this.
string base64_encoded_points;
if (!EncodeFloatArrayBase64(points_, &base64_encoded_points)) {
LOG(ERROR) << "Points encoding failed";
return false;
}
// Write required fields.
int point_count = static_cast<int>(points_.size() / 3);
if (!serializer->WriteProperty(
DynamicDepthConst::PointCloud(), kPointCount,
::dynamic_depth::strings::SimpleItoa(point_count))) {
return false;
}
if (!serializer->WriteProperty(DynamicDepthConst::PointCloud(), kPoints,
base64_encoded_points)) {
return false;
}
// Write optional fields.
serializer->WriteBoolProperty(DynamicDepthConst::PointCloud(), kMetric,
metric_);
return true;
}
// Private methods.
bool PointCloud::ParseFields(const Deserializer& deserializer) {
// Required fields.
std::vector<float> points;
if (!deserializer.ParseFloatArrayBase64(DynamicDepthConst::PointCloud(),
kPoints, &points)) {
return false;
}
int point_count;
if (!deserializer.ParseInt(DynamicDepthConst::PointCloud(), kPointCount,
&point_count)) {
return false;
}
if (points.size() % 3 != 0) {
LOG(ERROR) << "Parsed " << points.size() << " values but expected the size "
<< "to be divisible by 3 for (x, y, z) tuple representation";
return false;
}
int parsed_points_count = static_cast<int>(points.size() / 3);
if (parsed_points_count != point_count) {
LOG(ERROR) << "Parsed PointCount = " << point_count << " but "
<< parsed_points_count << " points were found";
return false;
}
// We know that point_count == points.size() now.
points_ = points;
// Optional fields.
bool metric;
if (!deserializer.ParseBoolean(DynamicDepthConst::PointCloud(), kMetric,
&metric)) {
// Set it to the default value.
metric_ = false;
} else {
metric_ = metric;
}
return true;
}
} // namespace dynamic_depth
} // namespace photos_editing_formats
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