| /* |
| * 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 |
