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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.
*/
#include "include/core/SkTypes.h"
#if defined(SK_BUILD_FOR_ANDROID) && __ANDROID_API__ >= 26
#define GL_GLEXT_PROTOTYPES
#define EGL_EGLEXT_PROTOTYPES
#include "src/gpu/GrAHardwareBufferImageGenerator.h"
#include <android/hardware_buffer.h>
#include "include/gpu/GrBackendSurface.h"
#include "include/gpu/GrContext.h"
#include "include/gpu/GrTexture.h"
#include "include/gpu/gl/GrGLTypes.h"
#include "include/private/GrRecordingContext.h"
#include "src/core/SkExchange.h"
#include "src/core/SkMessageBus.h"
#include "src/gpu/GrAHardwareBufferUtils.h"
#include "src/gpu/GrContextPriv.h"
#include "src/gpu/GrProxyProvider.h"
#include "src/gpu/GrRecordingContextPriv.h"
#include "src/gpu/GrResourceCache.h"
#include "src/gpu/GrResourceProvider.h"
#include "src/gpu/GrResourceProviderPriv.h"
#include "src/gpu/GrTextureProxy.h"
#include "src/gpu/gl/GrGLDefines.h"
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#ifdef SK_VULKAN
#include "include/gpu/vk/GrVkExtensions.h"
#include "src/gpu/vk/GrVkGpu.h"
#endif
#define PROT_CONTENT_EXT_STR "EGL_EXT_protected_content"
#define EGL_PROTECTED_CONTENT_EXT 0x32C0
std::unique_ptr<SkImageGenerator> GrAHardwareBufferImageGenerator::Make(
AHardwareBuffer* graphicBuffer, SkAlphaType alphaType, sk_sp<SkColorSpace> colorSpace,
GrSurfaceOrigin surfaceOrigin) {
AHardwareBuffer_Desc bufferDesc;
AHardwareBuffer_describe(graphicBuffer, &bufferDesc);
SkColorType colorType =
GrAHardwareBufferUtils::GetSkColorTypeFromBufferFormat(bufferDesc.format);
SkImageInfo info = SkImageInfo::Make(bufferDesc.width, bufferDesc.height, colorType,
alphaType, std::move(colorSpace));
bool createProtectedImage = 0 != (bufferDesc.usage & AHARDWAREBUFFER_USAGE_PROTECTED_CONTENT);
return std::unique_ptr<SkImageGenerator>(new GrAHardwareBufferImageGenerator(
info, graphicBuffer, alphaType, createProtectedImage,
bufferDesc.format, surfaceOrigin));
}
GrAHardwareBufferImageGenerator::GrAHardwareBufferImageGenerator(const SkImageInfo& info,
AHardwareBuffer* hardwareBuffer, SkAlphaType alphaType, bool isProtectedContent,
uint32_t bufferFormat, GrSurfaceOrigin surfaceOrigin)
: INHERITED(info)
, fHardwareBuffer(hardwareBuffer)
, fBufferFormat(bufferFormat)
, fIsProtectedContent(isProtectedContent)
, fSurfaceOrigin(surfaceOrigin) {
AHardwareBuffer_acquire(fHardwareBuffer);
}
GrAHardwareBufferImageGenerator::~GrAHardwareBufferImageGenerator() {
AHardwareBuffer_release(fHardwareBuffer);
}
///////////////////////////////////////////////////////////////////////////////////////////////////
sk_sp<GrTextureProxy> GrAHardwareBufferImageGenerator::makeProxy(GrRecordingContext* context) {
if (context->priv().abandoned()) {
return nullptr;
}
auto direct = context->priv().asDirectContext();
if (!direct) {
return nullptr;
}
GrBackendFormat backendFormat = GrAHardwareBufferUtils::GetBackendFormat(direct,
fHardwareBuffer,
fBufferFormat,
false);
GrColorType grColorType = SkColorTypeToGrColorType(this->getInfo().colorType());
GrPixelConfig pixelConfig = context->priv().caps()->getConfigFromBackendFormat(backendFormat,
grColorType);
if (pixelConfig == kUnknown_GrPixelConfig) {
return nullptr;
}
int width = this->getInfo().width();
int height = this->getInfo().height();
GrSurfaceDesc desc;
desc.fWidth = width;
desc.fHeight = height;
desc.fConfig = pixelConfig;
GrTextureType textureType = GrTextureType::k2D;
if (context->backend() == GrBackendApi::kOpenGL) {
textureType = GrTextureType::kExternal;
} else if (context->backend() == GrBackendApi::kVulkan) {
VkFormat format;
SkAssertResult(backendFormat.asVkFormat(&format));
if (format == VK_FORMAT_UNDEFINED) {
textureType = GrTextureType::kExternal;
}
}
auto proxyProvider = context->priv().proxyProvider();
AHardwareBuffer* hardwareBuffer = fHardwareBuffer;
AHardwareBuffer_acquire(hardwareBuffer);
const bool isProtectedContent = fIsProtectedContent;
class AutoAHBRelease {
public:
AutoAHBRelease(AHardwareBuffer* ahb) : fAhb(ahb) {}
// std::function() must be CopyConstructible, but ours should never actually be copied.
AutoAHBRelease(const AutoAHBRelease&) { SkASSERT(0); }
AutoAHBRelease(AutoAHBRelease&& that) : fAhb(that.fAhb) { that.fAhb = nullptr; }
~AutoAHBRelease() { fAhb ? AHardwareBuffer_release(fAhb) : void(); }
AutoAHBRelease& operator=(AutoAHBRelease&& that) {
fAhb = skstd::exchange(that.fAhb, nullptr);
return *this;
}
AutoAHBRelease& operator=(const AutoAHBRelease&) = delete;
AHardwareBuffer* get() const { return fAhb; }
private:
AHardwareBuffer* fAhb;
};
sk_sp<GrTextureProxy> texProxy = proxyProvider->createLazyProxy(
[direct, buffer = AutoAHBRelease(hardwareBuffer), width, height, isProtectedContent,
backendFormat, grColorType](
GrResourceProvider* resourceProvider) -> GrSurfaceProxy::LazyCallbackResult {
GrAHardwareBufferUtils::DeleteImageProc deleteImageProc = nullptr;
GrAHardwareBufferUtils::UpdateImageProc updateImageProc = nullptr;
GrAHardwareBufferUtils::TexImageCtx texImageCtx = nullptr;
GrBackendTexture backendTex =
GrAHardwareBufferUtils::MakeBackendTexture(direct, buffer.get(),
width, height,
&deleteImageProc,
&updateImageProc,
&texImageCtx,
isProtectedContent,
backendFormat,
false);
if (!backendTex.isValid()) {
return {};
}
SkASSERT(deleteImageProc && texImageCtx);
// We make this texture cacheable to avoid recreating a GrTexture every time this
// is invoked. We know the owning SkIamge will send an invalidation message when the
// image is destroyed, so the texture will be removed at that time.
sk_sp<GrTexture> tex = resourceProvider->wrapBackendTexture(
backendTex, grColorType, kBorrow_GrWrapOwnership, GrWrapCacheable::kYes,
kRead_GrIOType);
if (!tex) {
deleteImageProc(texImageCtx);
return {};
}
if (deleteImageProc) {
tex->setRelease(deleteImageProc, texImageCtx);
}
return tex;
},
backendFormat, desc, GrRenderable::kNo, 1, fSurfaceOrigin, GrMipMapped::kNo,
GrMipMapsStatus::kNotAllocated, GrInternalSurfaceFlags::kReadOnly, SkBackingFit::kExact,
SkBudgeted::kNo, GrProtected::kNo, GrSurfaceProxy::UseAllocator::kYes);
return texProxy;
}
sk_sp<GrTextureProxy> GrAHardwareBufferImageGenerator::onGenerateTexture(
GrRecordingContext* context, const SkImageInfo& info,
const SkIPoint& origin, bool willNeedMipMaps) {
sk_sp<GrTextureProxy> texProxy = this->makeProxy(context);
if (!texProxy) {
return nullptr;
}
if (0 == origin.fX && 0 == origin.fY &&
info.width() == this->getInfo().width() && info.height() == this->getInfo().height()) {
// If the caller wants the full texture we're done. The caller will handle making a copy for
// mip maps if that is required.
return texProxy;
}
// Otherwise, make a copy for the requested subset.
SkIRect subset = SkIRect::MakeXYWH(origin.fX, origin.fY, info.width(), info.height());
GrMipMapped mipMapped = willNeedMipMaps ? GrMipMapped::kYes : GrMipMapped::kNo;
return GrSurfaceProxy::Copy(context, texProxy.get(), mipMapped, subset, SkBackingFit::kExact,
SkBudgeted::kYes);
}
bool GrAHardwareBufferImageGenerator::onIsValid(GrContext* context) const {
if (nullptr == context) {
return false; //CPU backend is not supported, because hardware buffer can be swizzled
}
return GrBackendApi::kOpenGL == context->backend() ||
GrBackendApi::kVulkan == context->backend();
}
#endif //SK_BUILD_FOR_ANDROID_FRAMEWORK