Merge Android R (rvc-dev-plus-aosp-without-vendor@6692709)

Bug: 166295507
Merged-In: I3d92a6de21a938f6b352ec26dc23420c0fe02b27
Change-Id: Ifdb80563ef042738778ebb8a7581a97c4e3d96e2

1 files changed, 91 insertions, 0 deletions

diff --git a/libs/hwui/AutoBackendTextureRelease.cpp b/libs/hwui/AutoBackendTextureRelease.cpp
new file mode 100644
index 000000000000..72747e8fa543
--- /dev/null
+++ b/libs/hwui/AutoBackendTextureRelease.cpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "AutoBackendTextureRelease.h"
+
+#include "renderthread/RenderThread.h"
+#include "utils/Color.h"
+#include "utils/PaintUtils.h"
+
+using namespace android::uirenderer::renderthread;
+
+namespace android {
+namespace uirenderer {
+
+AutoBackendTextureRelease::AutoBackendTextureRelease(GrContext* context, AHardwareBuffer* buffer) {
+    AHardwareBuffer_Desc desc;
+    AHardwareBuffer_describe(buffer, &desc);
+    bool createProtectedImage = 0 != (desc.usage & AHARDWAREBUFFER_USAGE_PROTECTED_CONTENT);
+    GrBackendFormat backendFormat =
+            GrAHardwareBufferUtils::GetBackendFormat(context, buffer, desc.format, false);
+    mBackendTexture = GrAHardwareBufferUtils::MakeBackendTexture(
+            context, buffer, desc.width, desc.height, &mDeleteProc, &mUpdateProc, &mImageCtx,
+            createProtectedImage, backendFormat, false);
+}
+
+void AutoBackendTextureRelease::unref(bool releaseImage) {
+    if (!RenderThread::isCurrent()) {
+        // EGLImage needs to be destroyed on RenderThread to prevent memory leak.
+        // ~SkImage dtor for both pipelines needs to be invoked on RenderThread, because it is not
+        // thread safe.
+        RenderThread::getInstance().queue().post([this, releaseImage]() { unref(releaseImage); });
+        return;
+    }
+
+    if (releaseImage) {
+        mImage.reset();
+    }
+
+    mUsageCount--;
+    if (mUsageCount <= 0) {
+        if (mBackendTexture.isValid()) {
+            mDeleteProc(mImageCtx);
+            mBackendTexture = {};
+        }
+        delete this;
+    }
+}
+
+// releaseProc is invoked by SkImage, when texture is no longer in use.
+// "releaseContext" contains an "AutoBackendTextureRelease*".
+static void releaseProc(SkImage::ReleaseContext releaseContext) {
+    AutoBackendTextureRelease* textureRelease =
+            reinterpret_cast<AutoBackendTextureRelease*>(releaseContext);
+    textureRelease->unref(false);
+}
+
+void AutoBackendTextureRelease::makeImage(AHardwareBuffer* buffer, android_dataspace dataspace,
+                                          GrContext* context) {
+    AHardwareBuffer_Desc desc;
+    AHardwareBuffer_describe(buffer, &desc);
+    SkColorType colorType = GrAHardwareBufferUtils::GetSkColorTypeFromBufferFormat(desc.format);
+    mImage = SkImage::MakeFromTexture(
+            context, mBackendTexture, kTopLeft_GrSurfaceOrigin, colorType, kPremul_SkAlphaType,
+            uirenderer::DataSpaceToColorSpace(dataspace), releaseProc, this);
+    if (mImage.get()) {
+        // The following ref will be counteracted by releaseProc, when SkImage is discarded.
+        ref();
+    }
+}
+
+void AutoBackendTextureRelease::newBufferContent(GrContext* context) {
+    if (mBackendTexture.isValid()) {
+        mUpdateProc(mImageCtx, context);
+    }
+}
+
+} /* namespace uirenderer */
+} /* namespace android */