TextureView Vulkan support and optimized OpenGL draw
Render TextureView as hardware bitmaps, instead of GL textures.
Cache SkImage for each observed GraphicBuffer, which is faster
even for GL.
Implement C++ SurfaceTexture, which allows Java SurfaceTexture
to be used with Vulkan HWUI render thread and application GL.
threads. Delete GLLayer and VkLayer classes and texture code
from old HWUI pipeline.
Test: Ran skiagl and skiavk pipeline with a TextureView app.
Test: TextureView CTS tests pass for GL pipeline.
Test: Ran Android NDK Native codec sample app.
Change-Id: Idc94f864ce2d34fd6ceff4be4fc7d3327e99879c
diff --git a/libs/hwui/surfacetexture/ImageConsumer.h b/libs/hwui/surfacetexture/ImageConsumer.h
new file mode 100644
index 0000000..31ee8db
--- /dev/null
+++ b/libs/hwui/surfacetexture/ImageConsumer.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#pragma once
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#include <gui/BufferQueueDefs.h>
+
+#include <SkImage.h>
+#include <cutils/compiler.h>
+#include <gui/BufferItem.h>
+#include <system/graphics.h>
+
+namespace android {
+
+namespace uirenderer {
+class RenderState;
+}
+
+class SurfaceTexture;
+
+/*
+ * ImageConsumer implements the parts of SurfaceTexture that deal with
+ * images consumed by HWUI view system.
+ */
+class ImageConsumer {
+public:
+ sk_sp<SkImage> dequeueImage(bool* queueEmpty, SurfaceTexture& cb,
+ uirenderer::RenderState& renderState);
+
+ /**
+ * onAcquireBufferLocked amends the ConsumerBase method to update the
+ * mImageSlots array in addition to the ConsumerBase behavior.
+ */
+ void onAcquireBufferLocked(BufferItem* item);
+
+ /**
+ * onReleaseBufferLocked amends the ConsumerBase method to update the
+ * mImageSlots array in addition to the ConsumerBase.
+ */
+ void onReleaseBufferLocked(int slot);
+
+ /**
+ * onFreeBufferLocked frees up the given buffer slot. If the slot has been
+ * initialized this will release the reference to the GraphicBuffer in that
+ * slot and destroy the SkImage in that slot. Otherwise it has no effect.
+ */
+ void onFreeBufferLocked(int slotIndex);
+
+private:
+ /**
+ * ImageSlot contains the information and object references that
+ * ImageConsumer maintains about a BufferQueue buffer slot.
+ */
+ struct ImageSlot {
+ ImageSlot() : mEglFence(EGL_NO_SYNC_KHR) {}
+
+ // mImage is the SkImage created from mGraphicBuffer.
+ sk_sp<SkImage> mImage;
+
+ /**
+ * mEglFence is the EGL sync object that must signal before the buffer
+ * associated with this buffer slot may be dequeued.
+ */
+ EGLSyncKHR mEglFence;
+
+ void createIfNeeded(sp<GraphicBuffer> graphicBuffer);
+ };
+
+ /**
+ * ImageConsumer stores the SkImages that have been allocated by the BufferQueue
+ * for each buffer slot. It is initialized to null pointers, and gets
+ * filled in with the result of BufferQueue::acquire when the
+ * client dequeues a buffer from a
+ * slot that has not yet been used. The buffer allocated to a slot will also
+ * be replaced if the requested buffer usage or geometry differs from that
+ * of the buffer allocated to a slot.
+ */
+ ImageSlot mImageSlots[BufferQueueDefs::NUM_BUFFER_SLOTS];
+};
+
+}; /* namespace android */