libgui: avoid allocations for bit manip
Avoid doing allocations when getting layer metadata
attributes.
Bug: 328177618
Test: TH
Change-Id: I63189bce152bd275bd46d9d2cdd4d7d02d282533
diff --git a/libs/gui/LayerMetadata.cpp b/libs/gui/LayerMetadata.cpp
index 4e12fd3..535a021 100644
--- a/libs/gui/LayerMetadata.cpp
+++ b/libs/gui/LayerMetadata.cpp
@@ -100,27 +100,31 @@
int32_t LayerMetadata::getInt32(uint32_t key, int32_t fallback) const {
if (!has(key)) return fallback;
const std::vector<uint8_t>& data = mMap.at(key);
- if (data.size() < sizeof(uint32_t)) return fallback;
- Parcel p;
- p.setData(data.data(), data.size());
- return p.readInt32();
+
+ // TODO: should handle when not equal?
+ if (data.size() < sizeof(int32_t)) return fallback;
+
+ int32_t result;
+ memcpy(&result, data.data(), sizeof(result));
+ return result;
}
void LayerMetadata::setInt32(uint32_t key, int32_t value) {
std::vector<uint8_t>& data = mMap[key];
- Parcel p;
- p.writeInt32(value);
- data.resize(p.dataSize());
- memcpy(data.data(), p.data(), p.dataSize());
+ data.resize(sizeof(value));
+ memcpy(data.data(), &value, sizeof(value));
}
std::optional<int64_t> LayerMetadata::getInt64(uint32_t key) const {
if (!has(key)) return std::nullopt;
const std::vector<uint8_t>& data = mMap.at(key);
+
+ // TODO: should handle when not equal?
if (data.size() < sizeof(int64_t)) return std::nullopt;
- Parcel p;
- p.setData(data.data(), data.size());
- return p.readInt64();
+
+ int64_t result;
+ memcpy(&result, data.data(), sizeof(result));
+ return result;
}
std::string LayerMetadata::itemToString(uint32_t key, const char* separator) const {