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/*
* 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 "../DisplayList.h"
#include "../RenderNode.h"
#include "CanvasContext.h"
#include "RenderThread.h"
namespace android {
namespace uirenderer {
namespace renderthread {
DrawFrameTask::DrawFrameTask() : mContext(0) {
}
DrawFrameTask::~DrawFrameTask() {
}
void DrawFrameTask::setContext(CanvasContext* context) {
mContext = context;
}
void DrawFrameTask::addLayer(DeferredLayerUpdater* layer) {
LOG_ALWAYS_FATAL_IF(!mContext, "Lifecycle violation, there's no context to addLayer with!");
mLayers.push(layer);
}
void DrawFrameTask::removeLayer(DeferredLayerUpdater* layer) {
for (size_t i = 0; i < mLayers.size(); i++) {
if (mLayers[i] == layer) {
mLayers.removeAt(i);
break;
}
}
}
void DrawFrameTask::setDirty(int left, int top, int right, int bottom) {
mDirty.set(left, top, right, bottom);
}
void DrawFrameTask::drawFrame(RenderThread* renderThread) {
LOG_ALWAYS_FATAL_IF(!mContext, "Cannot drawFrame with no CanvasContext!");
postAndWait(renderThread);
// Reset the single-frame data
mDirty.setEmpty();
}
void DrawFrameTask::postAndWait(RenderThread* renderThread) {
AutoMutex _lock(mLock);
renderThread->queue(this);
mSignal.wait(mLock);
}
void DrawFrameTask::run() {
ATRACE_NAME("DrawFrame");
bool canUnblockUiThread = syncFrameState();
// Grab a copy of everything we need
Rect dirty(mDirty);
CanvasContext* context = mContext;
// From this point on anything in "this" is *UNSAFE TO ACCESS*
if (canUnblockUiThread) {
unblockUiThread();
}
context->draw(&dirty);
if (!canUnblockUiThread) {
unblockUiThread();
}
}
static void initTreeInfo(TreeInfo& info) {
info.prepareTextures = true;
info.performStagingPush = true;
info.evaluateAnimations = true;
// TODO: Get this from Choreographer
nsecs_t frameTimeNs = systemTime(CLOCK_MONOTONIC);
info.frameTimeMs = nanoseconds_to_milliseconds(frameTimeNs);
}
bool DrawFrameTask::syncFrameState() {
ATRACE_CALL();
mContext->makeCurrent();
Caches::getInstance().textureCache.resetMarkInUse();
TreeInfo info;
initTreeInfo(info);
mContext->processLayerUpdates(&mLayers, info);
mContext->prepareTree(info);
// If prepareTextures is false, we ran out of texture cache space
return !info.hasFunctors && info.prepareTextures;
}
void DrawFrameTask::unblockUiThread() {
AutoMutex _lock(mLock);
mSignal.signal();
}
} /* namespace renderthread */
} /* namespace uirenderer */
} /* namespace android */
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