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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/. */
#ifndef mozilla_layers_FrameUniformityData_h_
#define mozilla_layers_FrameUniformityData_h_
#include "ipc/IPCMessageUtils.h"
#include "js/TypeDecls.h"
#include "ipc/IPCMessageUtilsSpecializations.h"
#include "mozilla/RefPtr.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/gfx/Point.h"
#include "nsTArray.h"
namespace mozilla {
namespace layers {
class Layer;
class FrameUniformityData {
friend struct IPC::ParamTraits<FrameUniformityData>;
public:
bool ToJS(JS::MutableHandleValue aOutValue, JSContext* aContext);
// Contains the calculated frame uniformities
std::map<uintptr_t, float> mUniformities;
};
struct LayerTransforms {
LayerTransforms() = default;
gfx::Point GetAverage();
gfx::Point GetStdDev();
bool Sanitize();
// 60 fps * 5 seconds worth of data
AutoTArray<gfx::Point, 300> mTransforms;
};
class LayerTransformRecorder {
public:
LayerTransformRecorder() = default;
~LayerTransformRecorder();
void RecordTransform(Layer* aLayer, const gfx::Point& aTransform);
void Reset();
void EndTest(FrameUniformityData* aOutData);
private:
float CalculateFrameUniformity(uintptr_t aLayer);
LayerTransforms* GetLayerTransforms(uintptr_t aLayer);
using FrameTransformMap =
std::map<uintptr_t, mozilla::UniquePtr<LayerTransforms>>;
FrameTransformMap mFrameTransforms;
};
} // namespace layers
} // namespace mozilla
namespace IPC {
template <>
struct ParamTraits<mozilla::layers::FrameUniformityData> {
typedef mozilla::layers::FrameUniformityData paramType;
static void Write(Message* aMsg, const paramType& aParam) {
WriteParam(aMsg, aParam.mUniformities);
}
static bool Read(const Message* aMsg, PickleIterator* aIter,
paramType* aResult) {
return ParamTraitsStd<std::map<uintptr_t, float>>::Read(
aMsg, aIter, &aResult->mUniformities);
}
};
} // namespace IPC
#endif // mozilla_layers_FrameUniformityData_h_
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