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Add encoding details to tippecanoe-decode --stats output #906

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Add encoding details to tippecanoe-decode --stats output #906

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112 changes: 111 additions & 1 deletion decode.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -79,7 +79,117 @@ void do_stats(mvt_tile &tile, size_t size, bool compressed, int z, unsigned x, u
state.json_end_hash();
}

state.json_end_hash();
state.json_end_hash(); // layers

state.json_write_string("encoding");
state.json_write_hash();

state.json_write_string("wrapper_overhead_bytes");
state.json_write_unsigned(tile.reader_overhead);

state.json_write_string("wrapper_overhead_count");
state.json_write_unsigned(tile.reader_overhead_count);

state.json_write_string("layer_overhead_bytes");
state.json_write_unsigned(tile.layer_read_overhead);

state.json_write_string("layer_overhead_count");
state.json_write_unsigned(tile.layer_read_overhead_count);

state.json_write_string("layer_name_bytes");
state.json_write_unsigned(tile.layer_names);

state.json_write_string("layer_name_count");
state.json_write_unsigned(tile.layer_names_count);

state.json_write_string("attribute_name_bytes");
state.json_write_unsigned(tile.layer_keys);

state.json_write_string("attribute_name_count");
state.json_write_unsigned(tile.layer_keys_count);

state.json_write_string("attribute_value_overhead_bytes");
state.json_write_unsigned(tile.value_overhead);

state.json_write_string("attribute_value_overhead_count");
state.json_write_unsigned(tile.value_overhead_count);

state.json_write_string("attribute_string_value_bytes");
state.json_write_unsigned(tile.string_values);

state.json_write_string("attribute_string_value_count");
state.json_write_unsigned(tile.string_values_count);

state.json_write_string("attribute_float_value_bytes");
state.json_write_unsigned(tile.float_values);

state.json_write_string("attribute_float_value_count");
state.json_write_unsigned(tile.float_values_count);

state.json_write_string("attribute_double_value_bytes");
state.json_write_unsigned(tile.double_values);

state.json_write_string("attribute_double_value_count");
state.json_write_unsigned(tile.double_values_count);

state.json_write_string("attribute_int_value_bytes");
state.json_write_unsigned(tile.int_values);

state.json_write_string("attribute_int_value_count");
state.json_write_unsigned(tile.int_values_count);

state.json_write_string("attribute_bool_value_bytes");
state.json_write_unsigned(tile.bool_values);

state.json_write_string("attribute_bool_value_count");
state.json_write_unsigned(tile.bool_values_count);

state.json_write_string("layer_extent_bytes");
state.json_write_unsigned(tile.layer_extents);

state.json_write_string("layer_extent_count");
state.json_write_unsigned(tile.layer_extents_count);

state.json_write_string("layer_version_bytes");
state.json_write_unsigned(tile.layer_versions);

state.json_write_string("layer_version_count");
state.json_write_unsigned(tile.layer_versions_count);

state.json_write_string("feature_overhead_bytes");
state.json_write_unsigned(tile.feature_reader_overhead);

state.json_write_string("feature_overhead_count");
state.json_write_unsigned(tile.feature_reader_overhead_count);

state.json_write_string("feature_id_bytes");
state.json_write_unsigned(tile.ids);

state.json_write_string("feature_id_count");
state.json_write_unsigned(tile.ids_count);

state.json_write_string("feature_attribute_references_bytes");
state.json_write_unsigned(tile.attribute_refs);

state.json_write_string("feature_attribute_references_count");
state.json_write_unsigned(tile.attribute_refs_count);

state.json_write_string("feature_type_bytes");
state.json_write_unsigned(tile.feature_types);

state.json_write_string("feature_type_count");
state.json_write_unsigned(tile.feature_types_count);

state.json_write_string("feature_geometry_bytes");
state.json_write_unsigned(tile.feature_geometries);

state.json_write_string("feature_geometry_count");
state.json_write_unsigned(tile.feature_geometries_count);

state.json_write_string("feature_geometry_nodes");
state.json_write_unsigned(tile.feature_geometries_nodes);

state.json_end_hash(); // encoding
state.json_end_hash();

state.json_write_newline();
Expand Down
126 changes: 122 additions & 4 deletions mvt.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -124,23 +124,79 @@ bool mvt_tile::decode(std::string &message, bool &was_compressed) {
was_compressed = false;
}

reader_overhead = 0;
reader_overhead_count = 0;
layer_read_overhead = 0;
layer_read_overhead_count = 0;
layer_names = 0;
layer_names_count = 0;
layer_keys = 0;
layer_keys_count = 0;
value_overhead = 0;
value_overhead_count = 0;
string_values = 0;
string_values_count = 0;
float_values = 0;
float_values_count = 0;
double_values = 0;
double_values_count = 0;
int_values = 0;
int_values_count = 0;
bool_values = 0;
bool_values_count = 0;
layer_extents = 0;
layer_extents_count = 0;
layer_versions = 0;
layer_versions_count = 0;
feature_reader_overhead = 0;
feature_reader_overhead_count = 0;
ids = 0;
ids_count = 0;
attribute_refs = 0;
attribute_refs_count = 0;
feature_types = 0;
feature_types_count = 0;
feature_geometries = 0;
feature_geometries_count = 0;
feature_geometries_nodes = 0;

protozero::pbf_reader reader(src);

while (reader.next()) {
while (1) {
reader_overhead += reader.length();
if (!reader.next()) {
break;
}
reader_overhead -= reader.length();
reader_overhead_count++;

switch (reader.tag()) {
case 3: /* layer */
{
protozero::pbf_reader layer_reader(reader.get_message());
mvt_layer layer;

while (layer_reader.next()) {
while (1) {
layer_read_overhead += layer_reader.length();
if (!layer_reader.next()) {
break;
}
layer_read_overhead -= layer_reader.length();
layer_read_overhead_count++;

switch (layer_reader.tag()) {
case 1: /* name */
layer_names += layer_reader.length();
layer.name = layer_reader.get_string();
layer_names -= layer_reader.length();
layer_names_count++;
break;

case 3: /* key */
layer_keys += layer_reader.length();
layer.keys.push_back(layer_reader.get_string());
layer_keys -= layer_reader.length();
layer_keys_count++;
break;

case 4: /* value */
Expand All @@ -151,45 +207,75 @@ bool mvt_tile::decode(std::string &message, bool &was_compressed) {
value.type = mvt_null;
value.numeric_value.null_value = 0;

while (value_reader.next()) {
while (1) {
value_overhead += value_reader.length();
if (!value_reader.next()) {
break;
}
value_overhead -= value_reader.length();
value_overhead_count++;

switch (value_reader.tag()) {
case 1: /* string */
value.type = mvt_string;
string_values += value_reader.length();
value.string_value = value_reader.get_string();
string_values -= value_reader.length();
string_values_count++;
break;

case 2: /* float */
value.type = mvt_float;
float_values += value_reader.length();
value.numeric_value.float_value = value_reader.get_float();
float_values -= value_reader.length();
float_values_count++;
break;

case 3: /* double */
value.type = mvt_double;
double_values += value_reader.length();
value.numeric_value.double_value = value_reader.get_double();
double_values -= value_reader.length();
double_values_count++;
break;

case 4: /* int */
value.type = mvt_int;
int_values += value_reader.length();
value.numeric_value.int_value = value_reader.get_int64();
int_values -= value_reader.length();
int_values_count++;
break;

case 5: /* uint */
value.type = mvt_uint;
int_values += value_reader.length();
value.numeric_value.uint_value = value_reader.get_uint64();
int_values -= value_reader.length();
int_values_count++;
break;

case 6: /* sint */
value.type = mvt_sint;
int_values += value_reader.length();
value.numeric_value.sint_value = value_reader.get_sint64();
int_values -= value_reader.length();
int_values_count++;
break;

case 7: /* bool */
value.type = mvt_bool;
bool_values += value_reader.length();
value.numeric_value.bool_value = value_reader.get_bool();
bool_values -= value_reader.length();
bool_values_count++;
break;

default:
value_overhead += value_reader.length();
value_reader.skip();
value_overhead -= value_reader.length();
break;
}
}
Expand All @@ -199,11 +285,17 @@ bool mvt_tile::decode(std::string &message, bool &was_compressed) {
}

case 5: /* extent */
layer_extents += layer_reader.length();
layer.extent = layer_reader.get_uint32();
layer_extents -= layer_reader.length();
layer_extents_count++;
break;

case 15: /* version */
layer_versions += layer_reader.length();
layer.version = layer_reader.get_uint32();
layer_versions -= layer_reader.length();
layer_versions_count++;
break;

case 2: /* feature */
Expand All @@ -212,37 +304,60 @@ bool mvt_tile::decode(std::string &message, bool &was_compressed) {
mvt_feature feature;
std::vector<uint32_t> geoms;

while (feature_reader.next()) {
while (1) {
feature_reader_overhead += feature_reader.length();
if (!feature_reader.next()) {
break;
}
feature_reader_overhead -= feature_reader.length();
feature_reader_overhead_count++;

switch (feature_reader.tag()) {
case 1: /* id */
ids += feature_reader.length();
feature.id = feature_reader.get_uint64();
ids -= feature_reader.length();
ids_count++;
feature.has_id = true;
break;

case 2: /* tag */
{
attribute_refs += feature_reader.length();
auto pi = feature_reader.get_packed_uint32();
attribute_refs -= feature_reader.length();
attribute_refs_count++;

for (auto it = pi.first; it != pi.second; ++it) {
feature.tags.push_back(*it);
}
break;
}

case 3: /* feature type */
feature_types += feature_reader.length();
feature.type = feature_reader.get_enum();
feature_types -= feature_reader.length();
feature_types_count++;
break;

case 4: /* geometry */
{
feature_geometries += feature_reader.length();
auto pi = feature_reader.get_packed_uint32();
feature_geometries -= feature_reader.length();
feature_geometries_count++;

for (auto it = pi.first; it != pi.second; ++it) {
geoms.push_back(*it);
}
break;
}

default:
feature_reader_overhead += feature_reader.length();
feature_reader.skip();
feature_reader_overhead -= feature_reader.length();
break;
}
}
Expand All @@ -266,6 +381,7 @@ bool mvt_tile::decode(std::string &message, bool &was_compressed) {
}
}

feature_geometries_nodes += feature.geometry.size();
layer.features.push_back(feature);
break;
}
Expand All @@ -288,7 +404,9 @@ bool mvt_tile::decode(std::string &message, bool &was_compressed) {
}

default:
reader_overhead += reader.length();
reader.skip();
reader_overhead -= reader.length();
break;
}
}
Expand Down
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