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// Copyright 2021 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef SRC_DAWN_NATIVE_EXTERNALTEXTURE_H_
#define SRC_DAWN_NATIVE_EXTERNALTEXTURE_H_
#include <array>
#include "dawn/native/Error.h"
#include "dawn/native/Forward.h"
#include "dawn/native/ObjectBase.h"
#include "dawn/native/Subresource.h"
namespace dawn::native {
class TextureViewBase;
struct ExternalTextureParams {
uint32_t numPlanes;
// TODO(crbug.com/dawn/1466): Only go as few steps as necessary.
uint32_t doYuvToRgbConversionOnly;
std::array<uint32_t, 2> padding;
std::array<float, 12> yuvToRgbConversionMatrix;
std::array<float, 8> gammaDecodingParams = {};
std::array<float, 8> gammaEncodingParams = {};
std::array<float, 12> gamutConversionMatrix = {};
std::array<float, 6> coordTransformMatrix = {};
};
MaybeError ValidateExternalTextureDescriptor(const DeviceBase* device,
const ExternalTextureDescriptor* descriptor);
class ExternalTextureBase : public ApiObjectBase {
public:
static ResultOrError<Ref<ExternalTextureBase>> Create(
DeviceBase* device,
const ExternalTextureDescriptor* descriptor);
BufferBase* GetParamsBuffer() const;
const std::array<Ref<TextureViewBase>, kMaxPlanesPerFormat>& GetTextureViews() const;
ObjectType GetType() const override;
const Extent2D& GetVisibleSize() const;
const Origin2D& GetVisibleOrigin() const;
MaybeError ValidateCanUseInSubmitNow() const;
static ExternalTextureBase* MakeError(DeviceBase* device, const char* label = nullptr);
void APIExpire();
void APIDestroy();
void APIRefresh();
protected:
ExternalTextureBase(DeviceBase* device, const ExternalTextureDescriptor* descriptor);
void DestroyImpl() override;
MaybeError Initialize(DeviceBase* device, const ExternalTextureDescriptor* descriptor);
~ExternalTextureBase() override;
private:
enum class ExternalTextureState { Active, Expired, Destroyed };
ExternalTextureBase(DeviceBase* device, ObjectBase::ErrorTag tag, const char* label);
MaybeError ValidateRefresh();
MaybeError ValidateExpire();
Ref<TextureBase> mPlaceholderTexture;
Ref<BufferBase> mParamsBuffer;
std::array<Ref<TextureViewBase>, kMaxPlanesPerFormat> mTextureViews;
// TODO(dawn:1082) Use the visible size and origin in the external texture shader
// code to sample video content.
Origin2D mVisibleOrigin;
Extent2D mVisibleSize;
ExternalTextureState mState;
};
} // namespace dawn::native
#endif // SRC_DAWN_NATIVE_EXTERNALTEXTURE_H_