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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "FilterNodeCapture.h"
namespace mozilla {
namespace gfx {
struct Setter {
Setter(FilterNode* aNode, DrawTarget* aDT, bool aInputsChanged)
: mNode{aNode}, mIndex{0}, mDT{aDT}, mInputsChanged{aInputsChanged} {}
template <typename T>
void operator()(T& aValue) {
mNode->SetAttribute(mIndex, aValue);
}
FilterNode* mNode;
uint32_t mIndex;
DrawTarget* mDT;
bool mInputsChanged;
};
template <>
void Setter::operator()<std::vector<Float>>(std::vector<Float>& aValue) {
mNode->SetAttribute(mIndex, aValue.data(), aValue.size());
}
template <>
void Setter::operator()<RefPtr<SourceSurface>>(
RefPtr<SourceSurface>& aSurface) {
if (!mInputsChanged) {
return;
}
mNode->SetInput(mIndex, aSurface);
}
template <>
void Setter::operator()<RefPtr<FilterNode>>(RefPtr<FilterNode>& aNode) {
RefPtr<FilterNode> node = aNode;
if (node->GetBackendType() == FilterBackend::FILTER_BACKEND_CAPTURE) {
FilterNodeCapture* captureNode =
static_cast<FilterNodeCapture*>(node.get());
node = captureNode->Validate(mDT);
}
if (!mInputsChanged) {
return;
}
mNode->SetInput(mIndex, node);
}
RefPtr<FilterNode> FilterNodeCapture::Validate(DrawTarget* aDT) {
if (!mFilterNodeInternal) {
mFilterNodeInternal = aDT->CreateFilter(mType);
}
if (!mFilterNodeInternal) {
return nullptr;
}
Setter setter(mFilterNodeInternal, aDT, mInputsChanged);
for (auto attribute : mAttributes) {
setter.mIndex = attribute.first;
// Variant's matching doesn't seem to compile to terribly efficient code,
// this is probably fine since this happens on the paint thread, if ever
// needed it would be fairly simple to write something more optimized.
attribute.second.match(setter);
}
mAttributes.clear();
for (auto input : mInputs) {
setter.mIndex = input.first;
input.second.match(setter);
}
mInputsChanged = false;
return mFilterNodeInternal.get();
}
void FilterNodeCapture::SetAttribute(uint32_t aIndex, const Float* aValues,
uint32_t aSize) {
std::vector<Float> vec(aSize);
memcpy(vec.data(), aValues, sizeof(Float) * aSize);
AttributeValue att(std::move(vec));
auto result = mAttributes.insert({aIndex, att});
if (!result.second) {
result.first->second = att;
}
}
} // namespace gfx
} // namespace mozilla