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[node] Calculate image buffer and length once (#8673)

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This commit is contained in:
Bobby Sudekum
2017-04-07 10:23:31 -07:00
committed by GitHub
parent 62355bc860
commit 0e72fc4ec3
1 changed files with 6 additions and 3 deletions
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9
platform/node/src/node_map.cpp
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@@ -635,13 +635,16 @@ void NodeMap::AddImage(const Nan::FunctionCallbackInfo<v8::Value>& info) {
uint32_t pixelRatio = Nan::Get(optionObject, Nan::New("pixelRatio").ToLocalChecked()).ToLocalChecked()->Uint32Value();
auto imageBuffer = Nan::To<v8::Object>(info[1]).ToLocalChecked()->ToObject();
char * imageDataBuffer = node::Buffer::Data(imageBuffer);
size_t imageLength = node::Buffer::Length(imageBuffer);
if (node::Buffer::Length(imageBuffer) != imageHeight * imageWidth * 4) {
if (imageLength != imageHeight * imageWidth * 4) {
return Nan::ThrowTypeError("Image size does not match buffer size");
}
std::unique_ptr<uint8_t[]> data = std::make_unique<uint8_t[]>(node::Buffer::Length(imageBuffer));
std::copy(node::Buffer::Data(imageBuffer), node::Buffer::Data(imageBuffer) + node::Buffer::Length(imageBuffer), data.get());
std::unique_ptr<uint8_t[]> data = std::make_unique<uint8_t[]>(imageLength);
std::copy(imageDataBuffer, imageDataBuffer + imageLength, data.get());
mbgl::PremultipliedImage cPremultipliedImage({ imageWidth, imageHeight}, std::move(data));
nodeMap->map->addImage(*Nan::Utf8String(info[0]), std::make_unique<mbgl::SpriteImage>(std::move(cPremultipliedImage), pixelRatio));