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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.
*/
#include "DeferredLayerUpdater.h"
#include "OpenGLRenderer.h"
#include "LayerRenderer.h"
#include "renderthread/EglManager.h"
#include "renderthread/RenderTask.h"
namespace android {
namespace uirenderer {
DeferredLayerUpdater::DeferredLayerUpdater(Layer* layer)
: mSurfaceTexture(nullptr)
, mTransform(nullptr)
, mNeedsGLContextAttach(false)
, mUpdateTexImage(false)
, mLayer(layer)
, mCaches(Caches::getInstance()) {
mWidth = mLayer->layer.getWidth();
mHeight = mLayer->layer.getHeight();
mBlend = mLayer->isBlend();
mColorFilter = SkSafeRef(mLayer->getColorFilter());
mAlpha = mLayer->getAlpha();
mMode = mLayer->getMode();
}
DeferredLayerUpdater::~DeferredLayerUpdater() {
SkSafeUnref(mColorFilter);
setTransform(nullptr);
mLayer->postDecStrong();
mLayer = nullptr;
}
void DeferredLayerUpdater::setPaint(const SkPaint* paint) {
mAlpha = PaintUtils::getAlphaDirect(paint);
mMode = PaintUtils::getXfermodeDirect(paint);
SkColorFilter* colorFilter = (paint) ? paint->getColorFilter() : nullptr;
SkRefCnt_SafeAssign(mColorFilter, colorFilter);
}
void DeferredLayerUpdater::apply() {
// These properties are applied the same to both layer types
mLayer->setColorFilter(mColorFilter);
mLayer->setAlpha(mAlpha, mMode);
if (mSurfaceTexture.get()) {
if (mNeedsGLContextAttach) {
mNeedsGLContextAttach = false;
mSurfaceTexture->attachToContext(mLayer->getTextureId());
}
if (mUpdateTexImage) {
mUpdateTexImage = false;
doUpdateTexImage();
}
if (mTransform) {
mLayer->getTransform().load(*mTransform);
setTransform(nullptr);
}
}
}
void DeferredLayerUpdater::doUpdateTexImage() {
if (mSurfaceTexture->updateTexImage() == NO_ERROR) {
float transform[16];
int64_t frameNumber = mSurfaceTexture->getFrameNumber();
// If the GLConsumer queue is in synchronous mode, need to discard all
// but latest frame, using the frame number to tell when we no longer
// have newer frames to target. Since we can't tell which mode it is in,
// do this unconditionally.
int dropCounter = 0;
while (mSurfaceTexture->updateTexImage() == NO_ERROR) {
int64_t newFrameNumber = mSurfaceTexture->getFrameNumber();
if (newFrameNumber == frameNumber) break;
frameNumber = newFrameNumber;
dropCounter++;
}
bool forceFilter = false;
sp<GraphicBuffer> buffer = mSurfaceTexture->getCurrentBuffer();
if (buffer != nullptr) {
// force filtration if buffer size != layer size
forceFilter = mWidth != static_cast<int>(buffer->getWidth())
|| mHeight != static_cast<int>(buffer->getHeight());
}
#if DEBUG_RENDERER
if (dropCounter > 0) {
RENDERER_LOGD("Dropped %d frames on texture layer update", dropCounter);
}
#endif
mSurfaceTexture->getTransformMatrix(transform);
GLenum renderTarget = mSurfaceTexture->getCurrentTextureTarget();
LOG_ALWAYS_FATAL_IF(renderTarget != GL_TEXTURE_2D && renderTarget != GL_TEXTURE_EXTERNAL_OES,
"doUpdateTexImage target %x, 2d %x, EXT %x",
renderTarget, GL_TEXTURE_2D, GL_TEXTURE_EXTERNAL_OES);
LayerRenderer::updateTextureLayer(mLayer, mWidth, mHeight,
!mBlend, forceFilter, renderTarget, transform);
}
}
void DeferredLayerUpdater::detachSurfaceTexture() {
if (mSurfaceTexture.get()) {
status_t err = mSurfaceTexture->detachFromContext();
if (err != 0) {
// TODO: Elevate to fatal exception
ALOGE("Failed to detach SurfaceTexture from context %d", err);
}
mSurfaceTexture = nullptr;
mLayer->clearTexture();
}
}
} /* namespace uirenderer */
} /* namespace android */
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