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* Copyright 2017 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrAHardwareBufferImageGenerator_DEFINED
#define GrAHardwareBufferImageGenerator_DEFINED
#include "SkImageGenerator.h"
#include "GrTypesPriv.h"
class GrGpuResource;
extern "C" {
typedef struct AHardwareBuffer AHardwareBuffer;
* GrAHardwareBufferImageGenerator allows to create an SkImage attached to
* an existing android native hardware buffer. A hardware buffer has to be
* created with AHARDWAREBUFFER_USAGE_GPU_SAMPLED_IMAGE usage, because it is
* bound to an external texture using an EGLImage. The image generator will
* keep a reference to the hardware buffer for its lifetime. A hardware buffer
* can be shared between processes and same buffer can be used in multiple GPU
* contexts.
* To implement certain features like tiling, Skia may copy the texture to
* avoid OpenGL API limitations.
class GrAHardwareBufferImageGenerator : public SkImageGenerator {
static std::unique_ptr<SkImageGenerator> Make(AHardwareBuffer*, SkAlphaType,
sk_sp<SkColorSpace>, GrSurfaceOrigin);
~GrAHardwareBufferImageGenerator() override;
typedef void* DeleteImageCtx;
typedef void (*DeleteImageProc)(DeleteImageCtx);
static void DeleteGLTexture(void* ctx);
#ifdef SK_VULKAN
static void DeleteVkImage(void* ctx);
bool onIsValid(GrContext*) const override;
TexGenType onCanGenerateTexture() const override { return TexGenType::kCheap; }
sk_sp<GrTextureProxy> onGenerateTexture(GrContext*, const SkImageInfo&, const SkIPoint&,
bool willNeedMipMaps) override;
GrAHardwareBufferImageGenerator(const SkImageInfo&, AHardwareBuffer*, SkAlphaType,
bool isProtectedContent, uint32_t bufferFormat,
GrSurfaceOrigin surfaceOrigin);
sk_sp<GrTextureProxy> makeProxy(GrContext* context);
void releaseTextureRef();
static void ReleaseRefHelper_TextureReleaseProc(void* ctx);
AHardwareBuffer* fHardwareBuffer;
uint32_t fBufferFormat;
const bool fIsProtectedContent;
GrSurfaceOrigin fSurfaceOrigin;
typedef SkImageGenerator INHERITED;
#endif // GrAHardwareBufferImageGenerator_DEFINED