1 files changed, 150 insertions, 0 deletions
diff --git a/libs/hwui/renderthread/DrawFrameTask.cpp b/libs/hwui/renderthread/DrawFrameTask.cpp
new file mode 100644
index 000000000000..763e72747e83
--- /dev/null
+++ b/libs/hwui/renderthread/DrawFrameTask.cpp
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#define ATRACE_TAG ATRACE_TAG_VIEW
+
+#include "DrawFrameTask.h"
+
+#include <utils/Log.h>
+#include <utils/Trace.h>
+
+#include "../DeferredLayerUpdater.h"
+#include "../DisplayList.h"
+#include "../RenderNode.h"
+#include "CanvasContext.h"
+#include "RenderThread.h"
+
+namespace android {
+namespace uirenderer {
+namespace renderthread {
+
+DrawFrameTask::DrawFrameTask()
+        : mRenderThread(NULL)
+        , mContext(NULL)
+        , mFrameTimeNanos(0)
+        , mRecordDurationNanos(0)
+        , mDensity(1.0f) // safe enough default
+        , mSyncResult(kSync_OK) {
+}
+
+DrawFrameTask::~DrawFrameTask() {
+}
+
+void DrawFrameTask::setContext(RenderThread* thread, CanvasContext* context) {
+    mRenderThread = thread;
+    mContext = context;
+}
+
+void DrawFrameTask::pushLayerUpdate(DeferredLayerUpdater* layer) {
+    LOG_ALWAYS_FATAL_IF(!mContext, "Lifecycle violation, there's no context to pushLayerUpdate with!");
+
+    for (size_t i = 0; i < mLayers.size(); i++) {
+        if (mLayers[i].get() == layer) {
+            return;
+        }
+    }
+    mLayers.push_back(layer);
+}
+
+void DrawFrameTask::removeLayerUpdate(DeferredLayerUpdater* layer) {
+    for (size_t i = 0; i < mLayers.size(); i++) {
+        if (mLayers[i].get() == layer) {
+            mLayers.erase(mLayers.begin() + i);
+            return;
+        }
+    }
+}
+
+int DrawFrameTask::drawFrame(nsecs_t frameTimeNanos, nsecs_t recordDurationNanos) {
+    LOG_ALWAYS_FATAL_IF(!mContext, "Cannot drawFrame with no CanvasContext!");
+
+    mSyncResult = kSync_OK;
+    mFrameTimeNanos = frameTimeNanos;
+    mRecordDurationNanos = recordDurationNanos;
+    postAndWait();
+
+    // Reset the single-frame data
+    mFrameTimeNanos = 0;
+    mRecordDurationNanos = 0;
+
+    return mSyncResult;
+}
+
+void DrawFrameTask::postAndWait() {
+    AutoMutex _lock(mLock);
+    mRenderThread->queueAndWait(this, mSignal, mLock);
+}
+
+void DrawFrameTask::run() {
+    ATRACE_NAME("DrawFrame");
+
+    mContext->profiler().setDensity(mDensity);
+    mContext->profiler().startFrame(mRecordDurationNanos);
+
+    bool canUnblockUiThread;
+    bool canDrawThisFrame;
+    {
+        TreeInfo info(TreeInfo::MODE_FULL, mRenderThread->renderState());
+        canUnblockUiThread = syncFrameState(info);
+        canDrawThisFrame = info.out.canDrawThisFrame;
+    }
+
+    // Grab a copy of everything we need
+    CanvasContext* context = mContext;
+
+    // From this point on anything in "this" is *UNSAFE TO ACCESS*
+    if (canUnblockUiThread) {
+        unblockUiThread();
+    }
+
+    if (CC_LIKELY(canDrawThisFrame)) {
+        context->draw();
+    }
+
+    if (!canUnblockUiThread) {
+        unblockUiThread();
+    }
+}
+
+bool DrawFrameTask::syncFrameState(TreeInfo& info) {
+    ATRACE_CALL();
+    mRenderThread->timeLord().vsyncReceived(mFrameTimeNanos);
+    mContext->makeCurrent();
+    Caches::getInstance().textureCache.resetMarkInUse();
+
+    for (size_t i = 0; i < mLayers.size(); i++) {
+        mContext->processLayerUpdate(mLayers[i].get());
+    }
+    mLayers.clear();
+    mContext->prepareTree(info);
+
+    if (info.out.hasAnimations) {
+        if (info.out.requiresUiRedraw) {
+            mSyncResult |= kSync_UIRedrawRequired;
+        }
+    }
+    // If prepareTextures is false, we ran out of texture cache space
+    return info.prepareTextures;
+}
+
+void DrawFrameTask::unblockUiThread() {
+    AutoMutex _lock(mLock);
+    mSignal.signal();
+}
+
+} /* namespace renderthread */
+} /* namespace uirenderer */
+} /* namespace android */