| /* | |
| * 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 "SkTypes.h" | |
| #if defined(SK_BUILD_FOR_ANDROID) && __ANDROID_API__ >= 26 | |
| #define GL_GLEXT_PROTOTYPES | |
| #define EGL_EGLEXT_PROTOTYPES | |
| #include "GrAHardwareBufferImageGenerator.h" | |
| #include <android/hardware_buffer.h> | |
| #include "GrBackendSurface.h" | |
| #include "GrContext.h" | |
| #include "GrContextPriv.h" | |
| #include "GrProxyProvider.h" | |
| #include "GrResourceCache.h" | |
| #include "GrResourceProvider.h" | |
| #include "GrTexture.h" | |
| #include "GrTextureProxy.h" | |
| #include "SkMessageBus.h" | |
| #include "gl/GrGLDefines.h" | |
| #include "gl/GrGLTypes.h" | |
| #include <EGL/egl.h> | |
| #include <EGL/eglext.h> | |
| #include <GLES/gl.h> | |
| #include <GLES/glext.h> | |
| #define PROT_CONTENT_EXT_STR "EGL_EXT_protected_content" | |
| #define EGL_PROTECTED_CONTENT_EXT 0x32C0 | |
| static bool can_import_protected_content_eglimpl() { | |
| EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY); | |
| const char* exts = eglQueryString(dpy, EGL_EXTENSIONS); | |
| size_t cropExtLen = strlen(PROT_CONTENT_EXT_STR); | |
| size_t extsLen = strlen(exts); | |
| bool equal = !strcmp(PROT_CONTENT_EXT_STR, exts); | |
| bool atStart = !strncmp(PROT_CONTENT_EXT_STR " ", exts, cropExtLen+1); | |
| bool atEnd = (cropExtLen+1) < extsLen | |
| && !strcmp(" " PROT_CONTENT_EXT_STR, | |
| exts + extsLen - (cropExtLen+1)); | |
| bool inMiddle = strstr(exts, " " PROT_CONTENT_EXT_STR " "); | |
| return equal || atStart || atEnd || inMiddle; | |
| } | |
| static bool can_import_protected_content(GrContext* context) { | |
| if (kOpenGL_GrBackend == context->contextPriv().getBackend()) { | |
| // Only compute whether the extension is present once the first time this | |
| // function is called. | |
| static bool hasIt = can_import_protected_content_eglimpl(); | |
| return hasIt; | |
| } | |
| return false; | |
| } | |
| std::unique_ptr<SkImageGenerator> GrAHardwareBufferImageGenerator::Make( | |
| AHardwareBuffer* graphicBuffer, SkAlphaType alphaType, sk_sp<SkColorSpace> colorSpace) { | |
| AHardwareBuffer_Desc bufferDesc; | |
| AHardwareBuffer_describe(graphicBuffer, &bufferDesc); | |
| SkColorType colorType; | |
| switch (bufferDesc.format) { | |
| case AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM: | |
| colorType = kRGBA_8888_SkColorType; | |
| break; | |
| case AHARDWAREBUFFER_FORMAT_R16G16B16A16_FLOAT: | |
| colorType = kRGBA_F16_SkColorType; | |
| break; | |
| case AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM: | |
| colorType = kRGB_565_SkColorType; | |
| break; | |
| default: | |
| return nullptr; | |
| } | |
| 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)); | |
| } | |
| GrAHardwareBufferImageGenerator::GrAHardwareBufferImageGenerator(const SkImageInfo& info, | |
| AHardwareBuffer* hardwareBuffer, SkAlphaType alphaType, bool isProtectedContent) | |
| : INHERITED(info) | |
| , fHardwareBuffer(hardwareBuffer) | |
| , fIsProtectedContent(isProtectedContent) { | |
| AHardwareBuffer_acquire(fHardwareBuffer); | |
| } | |
| void GrAHardwareBufferImageGenerator::releaseTextureRef() { | |
| // We must release our ref on the proxy before we send the free message to the actual texture so | |
| // that we make sure the last ref (if it is owned by this class) is released on the owning | |
| // context. | |
| fCachedProxy.reset(); | |
| if (fOwnedTexture) { | |
| SkASSERT(fOwningContextID != SK_InvalidGenID); | |
| // Notify the original cache that it can free the last ref, so it happens on the correct | |
| // thread. | |
| GrGpuResourceFreedMessage msg { fOwnedTexture, fOwningContextID }; | |
| SkMessageBus<GrGpuResourceFreedMessage>::Post(msg); | |
| fOwnedTexture = nullptr; | |
| fOwningContextID = SK_InvalidGenID; | |
| } | |
| } | |
| GrAHardwareBufferImageGenerator::~GrAHardwareBufferImageGenerator() { | |
| this->releaseTextureRef(); | |
| AHardwareBuffer_release(fHardwareBuffer); | |
| } | |
| /////////////////////////////////////////////////////////////////////////////////////////////////// | |
| sk_sp<GrTextureProxy> GrAHardwareBufferImageGenerator::onGenerateTexture( | |
| GrContext* context, const SkImageInfo& info, const SkIPoint& origin, bool willNeedMipMaps) { | |
| this->makeProxy(context); | |
| if (!fCachedProxy) { | |
| return nullptr; | |
| } | |
| bool makingASubset = true; | |
| if (0 == origin.fX && 0 == origin.fY && | |
| info.width() == this->getInfo().width() && info.height() == this->getInfo().height()) { | |
| makingASubset = false; | |
| if (!willNeedMipMaps || GrMipMapped::kYes == fCachedProxy->mipMapped()) { | |
| // If the caller wants the full texture and we have the correct mip support, we're done | |
| return fCachedProxy; | |
| } | |
| } | |
| // Otherwise, make a copy for the requested subset or for mip maps. | |
| SkIRect subset = SkIRect::MakeXYWH(origin.fX, origin.fY, info.width(), info.height()); | |
| GrMipMapped mipMapped = willNeedMipMaps ? GrMipMapped::kYes : GrMipMapped::kNo; | |
| sk_sp<GrTextureProxy> texProxy = GrSurfaceProxy::Copy(context, fCachedProxy.get(), mipMapped, | |
| subset, SkBudgeted::kYes); | |
| if (!makingASubset && texProxy) { | |
| // We are in this case if we wanted the full texture, but we will be mip mapping the | |
| // texture. Therefore we want to update the cached texture so that we point to the | |
| // mipped version instead of the old one. | |
| SkASSERT(willNeedMipMaps); | |
| SkASSERT(GrMipMapped::kYes == texProxy->mipMapped()); | |
| // The only way we should get into here is if we just made a new texture in makeProxy or | |
| // we found a cached texture in the same context. Thus the current and cached contexts | |
| // should match. | |
| SkASSERT(context->uniqueID() == fOwningContextID); | |
| // Since we no longer will be caching the and reusing the texture that actually wraps the | |
| // hardware buffer, we can release our refs on it. | |
| this->releaseTextureRef(); | |
| fCachedProxy = texProxy; | |
| } | |
| return texProxy; | |
| } | |
| class BufferCleanupHelper { | |
| public: | |
| BufferCleanupHelper(EGLImageKHR image, EGLDisplay display) | |
| : fImage(image) | |
| , fDisplay(display) { } | |
| ~BufferCleanupHelper() { | |
| // eglDestroyImageKHR will remove a ref from the AHardwareBuffer | |
| eglDestroyImageKHR(fDisplay, fImage); | |
| } | |
| private: | |
| EGLImageKHR fImage; | |
| EGLDisplay fDisplay; | |
| }; | |
| void GrAHardwareBufferImageGenerator::DeleteEGLImage(void* context) { | |
| BufferCleanupHelper* cleanupHelper = static_cast<BufferCleanupHelper*>(context); | |
| delete cleanupHelper; | |
| } | |
| static GrBackendTexture make_gl_backend_texture( | |
| GrContext* context, AHardwareBuffer* hardwareBuffer, | |
| int width, int height, GrPixelConfig config, | |
| GrAHardwareBufferImageGenerator::DeleteImageProc* deleteProc, | |
| GrAHardwareBufferImageGenerator::DeleteImageCtx* deleteCtx, | |
| bool isProtectedContent) { | |
| while (GL_NO_ERROR != glGetError()) {} //clear GL errors | |
| EGLClientBuffer clientBuffer = eglGetNativeClientBufferANDROID(hardwareBuffer); | |
| EGLint attribs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, | |
| isProtectedContent ? EGL_PROTECTED_CONTENT_EXT : EGL_NONE, | |
| isProtectedContent ? EGL_TRUE : EGL_NONE, | |
| EGL_NONE }; | |
| EGLDisplay display = eglGetCurrentDisplay(); | |
| // eglCreateImageKHR will add a ref to the AHardwareBuffer | |
| EGLImageKHR image = eglCreateImageKHR(display, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID, | |
| clientBuffer, attribs); | |
| if (EGL_NO_IMAGE_KHR == image) { | |
| SkDebugf("Could not create EGL image, err = (%#x)", (int) eglGetError() ); | |
| return GrBackendTexture(); | |
| } | |
| GrGLuint texID; | |
| glGenTextures(1, &texID); | |
| if (!texID) { | |
| eglDestroyImageKHR(display, image); | |
| return GrBackendTexture(); | |
| } | |
| glBindTexture(GL_TEXTURE_EXTERNAL_OES, texID); | |
| GLenum status = GL_NO_ERROR; | |
| if ((status = glGetError()) != GL_NO_ERROR) { | |
| SkDebugf("glBindTexture failed (%#x)", (int) status); | |
| glDeleteTextures(1, &texID); | |
| eglDestroyImageKHR(display, image); | |
| return GrBackendTexture(); | |
| } | |
| glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, image); | |
| if ((status = glGetError()) != GL_NO_ERROR) { | |
| SkDebugf("glEGLImageTargetTexture2DOES failed (%#x)", (int) status); | |
| glDeleteTextures(1, &texID); | |
| eglDestroyImageKHR(display, image); | |
| return GrBackendTexture(); | |
| } | |
| context->resetContext(kTextureBinding_GrGLBackendState); | |
| GrGLTextureInfo textureInfo; | |
| textureInfo.fTarget = GL_TEXTURE_EXTERNAL_OES; | |
| textureInfo.fID = texID; | |
| switch (config) { | |
| case kRGBA_8888_GrPixelConfig: | |
| textureInfo.fFormat = GR_GL_RGBA8; | |
| break; | |
| case kRGBA_half_GrPixelConfig: | |
| textureInfo.fFormat = GR_GL_RGBA16F; | |
| break; | |
| case kRGB_565_GrPixelConfig: | |
| textureInfo.fFormat = GR_GL_RGB565; | |
| break; | |
| default: | |
| SkASSERT(false); | |
| } | |
| *deleteProc = GrAHardwareBufferImageGenerator::DeleteEGLImage; | |
| *deleteCtx = new BufferCleanupHelper(image, display); | |
| return GrBackendTexture(width, height, GrMipMapped::kNo, textureInfo); | |
| } | |
| static GrBackendTexture make_backend_texture( | |
| GrContext* context, AHardwareBuffer* hardwareBuffer, | |
| int width, int height, GrPixelConfig config, | |
| GrAHardwareBufferImageGenerator::DeleteImageProc* deleteProc, | |
| GrAHardwareBufferImageGenerator::DeleteImageCtx* deleteCtx, | |
| bool isProtectedContent) { | |
| if (context->abandoned() || kOpenGL_GrBackend != context->contextPriv().getBackend()) { | |
| // Check if GrContext is not abandoned and the backend is GL. | |
| return GrBackendTexture(); | |
| } | |
| bool createProtectedImage = isProtectedContent && can_import_protected_content(context); | |
| return make_gl_backend_texture(context, hardwareBuffer, width, height, config, deleteProc, | |
| deleteCtx, createProtectedImage); | |
| } | |
| static void free_backend_texture(GrBackendTexture* backendTexture) { | |
| SkASSERT(backendTexture && backendTexture->isValid()); | |
| switch (backendTexture->backend()) { | |
| case kOpenGL_GrBackend: { | |
| GrGLTextureInfo texInfo; | |
| SkAssertResult(backendTexture->getGLTextureInfo(&texInfo)); | |
| glDeleteTextures(1, &texInfo.fID); | |
| return; | |
| } | |
| case kVulkan_GrBackend: // fall through | |
| default: | |
| return; | |
| } | |
| } | |
| void GrAHardwareBufferImageGenerator::makeProxy(GrContext* context) { | |
| if (context->abandoned() || kOpenGL_GrBackend != context->contextPriv().getBackend()) { | |
| // Check if GrContext is not abandoned and the backend is GL. | |
| return; | |
| } | |
| if (SK_InvalidGenID != fOwningContextID) { | |
| SkASSERT(fCachedProxy); | |
| if (context->uniqueID() != fOwningContextID) { | |
| this->releaseTextureRef(); | |
| } else { | |
| return; | |
| } | |
| } | |
| SkASSERT(!fCachedProxy); | |
| fOwningContextID = context->uniqueID(); | |
| GrPixelConfig pixelConfig; | |
| switch (this->getInfo().colorType()) { | |
| case kRGBA_8888_SkColorType: | |
| pixelConfig = kRGBA_8888_GrPixelConfig; | |
| break; | |
| case kRGBA_F16_SkColorType: | |
| pixelConfig = kRGBA_half_GrPixelConfig; | |
| break; | |
| case kRGB_565_SkColorType: | |
| pixelConfig = kRGB_565_GrPixelConfig; | |
| break; | |
| default: | |
| return; | |
| } | |
| 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->contextPriv().getBackend() == kOpenGL_GrBackend) { | |
| textureType = GrTextureType::kExternal; | |
| } | |
| auto proxyProvider = context->contextPriv().proxyProvider(); | |
| AHardwareBuffer* hardwareBuffer = fHardwareBuffer; | |
| AHardwareBuffer_acquire(hardwareBuffer); | |
| GrTexture** ownedTexturePtr = &fOwnedTexture; | |
| const bool isProtectedContent = fIsProtectedContent; | |
| fCachedProxy = proxyProvider->createLazyProxy( | |
| [context, hardwareBuffer, width, height, pixelConfig, ownedTexturePtr, | |
| isProtectedContent] | |
| (GrResourceProvider* resourceProvider) { | |
| if (!resourceProvider) { | |
| AHardwareBuffer_release(hardwareBuffer); | |
| return sk_sp<GrTexture>(); | |
| } | |
| SkASSERT(!*ownedTexturePtr); | |
| DeleteImageProc deleteImageProc = nullptr; | |
| DeleteImageCtx deleteImageCtx = nullptr; | |
| GrBackendTexture backendTex = make_backend_texture(context, hardwareBuffer, | |
| width, height, pixelConfig, | |
| &deleteImageProc, | |
| &deleteImageCtx, | |
| isProtectedContent); | |
| if (!backendTex.isValid()) { | |
| return sk_sp<GrTexture>(); | |
| } | |
| SkASSERT(deleteImageProc && deleteImageCtx); | |
| backendTex.fConfig = pixelConfig; | |
| sk_sp<GrTexture> tex = resourceProvider->wrapBackendTexture( | |
| backendTex, kAdopt_GrWrapOwnership); | |
| if (!tex) { | |
| free_backend_texture(&backendTex); | |
| deleteImageProc(deleteImageCtx); | |
| return sk_sp<GrTexture>(); | |
| } | |
| sk_sp<GrReleaseProcHelper> releaseProcHelper( | |
| new GrReleaseProcHelper(deleteImageProc, deleteImageCtx)); | |
| tex->setRelease(releaseProcHelper); | |
| *ownedTexturePtr = tex.get(); | |
| // Attach our texture to this context's resource cache. This ensures that deletion | |
| // will happen in the correct thread/context. This adds the only ref to the texture | |
| // that will persist from this point. To trigger GrTexture deletion a message is | |
| // sent by generator dtor or by makeProxy when it is invoked with a different | |
| // context. | |
| context->contextPriv().getResourceCache()->insertCrossContextGpuResource(tex.get()); | |
| return tex; | |
| }, | |
| desc, kTopLeft_GrSurfaceOrigin, GrMipMapped::kNo, textureType, SkBackingFit::kExact, | |
| SkBudgeted::kNo); | |
| if (!fCachedProxy) { | |
| AHardwareBuffer_release(hardwareBuffer); | |
| return; | |
| } | |
| } | |
| bool GrAHardwareBufferImageGenerator::onIsValid(GrContext* context) const { | |
| if (nullptr == context) { | |
| return false; //CPU backend is not supported, because hardware buffer can be swizzled | |
| } | |
| // TODO: add Vulkan support | |
| return kOpenGL_GrBackend == context->contextPriv().getBackend(); | |
| } | |
| #endif //SK_BUILD_FOR_ANDROID_FRAMEWORK |