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* Copyright 2018 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkImage_GpuYUVA_DEFINED
#define SkImage_GpuYUVA_DEFINED
#include "GrBackendSurface.h"
#include "GrContext.h"
#include "SkCachedData.h"
#include "SkImage_GpuBase.h"
class GrTexture;
struct SkYUVASizeInfo;
// Wraps the 3 or 4 planes of a YUVA image for consumption by the GPU.
// Initially any direct rendering will be done by passing the individual planes to a shader.
// Once any method requests a flattened image (e.g., onReadPixels), the flattened RGB
// proxy will be stored and used for any future rendering.
class SkImage_GpuYUVA : public SkImage_GpuBase {
friend class GrYUVAImageTextureMaker;
SkImage_GpuYUVA(sk_sp<GrContext>, int width, int height, uint32_t uniqueID, SkYUVColorSpace,
sk_sp<GrTextureProxy> proxies[], int numProxies, const SkYUVAIndex[4],
GrSurfaceOrigin, sk_sp<SkColorSpace>);
~SkImage_GpuYUVA() override;
// This returns the single backing proxy if the YUV channels have already been flattened but
// nullptr if they have not.
GrTextureProxy* peekProxy() const override;
sk_sp<GrTextureProxy> asTextureProxyRef(GrRecordingContext*) const override;
virtual bool onIsTextureBacked() const override { return SkToBool(fProxies[0].get()); }
sk_sp<SkImage> onMakeColorTypeAndColorSpace(GrRecordingContext*,
SkColorType, sk_sp<SkColorSpace>) const final;
virtual bool isYUVA() const override { return true; }
virtual bool asYUVATextureProxiesRef(sk_sp<GrTextureProxy> proxies[4],
SkYUVAIndex yuvaIndices[4],
SkYUVColorSpace* yuvColorSpace) const override {
for (int i = 0; i < 4; ++i) {
proxies[i] = fProxies[i];
yuvaIndices[i] = fYUVAIndices[i];
*yuvColorSpace = fYUVColorSpace;
return true;
bool setupMipmapsForPlanes(GrRecordingContext*) const;
// Returns a ref-ed texture proxy with miplevels
sk_sp<GrTextureProxy> asMippedTextureProxyRef(GrRecordingContext*) const;
* This is the implementation of SkDeferredDisplayListRecorder::makeYUVAPromiseTexture.
static sk_sp<SkImage> MakePromiseYUVATexture(GrContext* context,
SkYUVColorSpace yuvColorSpace,
const GrBackendFormat yuvaFormats[],
const SkISize yuvaSizes[],
const SkYUVAIndex yuvaIndices[4],
int width,
int height,
GrSurfaceOrigin imageOrigin,
sk_sp<SkColorSpace> imageColorSpace,
PromiseImageTextureFulfillProc textureFulfillProc,
PromiseImageTextureReleaseProc textureReleaseProc,
PromiseImageTextureDoneProc textureDoneProc,
PromiseImageTextureContext textureContexts[],
SkImage_GpuYUVA(const SkImage_GpuYUVA* image, sk_sp<SkColorSpace>);
// This array will usually only be sparsely populated.
// The actual non-null fields are dictated by the 'fYUVAIndices' indices
mutable sk_sp<GrTextureProxy> fProxies[4];
int fNumProxies;
SkYUVAIndex fYUVAIndices[4];
const SkYUVColorSpace fYUVColorSpace;
GrSurfaceOrigin fOrigin;
// If this is non-null then the planar data should be converted from fFromColorSpace to
// this->colorSpace(). Otherwise we assume the planar data (post YUV->RGB conversion) is already
// in this->colorSpace().
const sk_sp<SkColorSpace> fFromColorSpace;
// Repeated calls to onMakeColorSpace will result in a proliferation of unique IDs and
// SkImage_GpuYUVA instances. Cache the result of the last successful onMakeColorSpace call.
mutable sk_sp<SkColorSpace> fOnMakeColorSpaceTarget;
mutable sk_sp<SkImage> fOnMakeColorSpaceResult;
// This is only allocated when the image needs to be flattened rather than
// using the separate YUVA planes. From thence forth we will only use the
// the RGBProxy.
mutable sk_sp<GrTextureProxy> fRGBProxy;
typedef SkImage_GpuBase INHERITED;