118d0245ee
A LayerScreenshot is a special type of layer that contains a screenshot of the screen acquired when its created. It works just like LayerDim. Make sure to call compositionComplete() after rendering into a FBO. Bug: 5446982, 5467587, 5466259 Change-Id: I5d8a1b4c327f9973d950cd4f4c0bca7f62825cd4
600 lines
20 KiB
C++
600 lines
20 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdlib.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <cutils/compiler.h>
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#include <cutils/native_handle.h>
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#include <cutils/properties.h>
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#include <utils/Errors.h>
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#include <utils/Log.h>
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#include <utils/StopWatch.h>
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#include <ui/GraphicBuffer.h>
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#include <ui/PixelFormat.h>
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#include <surfaceflinger/Surface.h>
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#include "clz.h"
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#include "DisplayHardware/DisplayHardware.h"
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#include "DisplayHardware/HWComposer.h"
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#include "GLExtensions.h"
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#include "Layer.h"
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#include "SurfaceFlinger.h"
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#include "SurfaceTextureLayer.h"
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#define DEBUG_RESIZE 0
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namespace android {
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// ---------------------------------------------------------------------------
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Layer::Layer(SurfaceFlinger* flinger,
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DisplayID display, const sp<Client>& client)
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: LayerBaseClient(flinger, display, client),
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mTextureName(-1U),
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mQueuedFrames(0),
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mCurrentTransform(0),
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mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
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mCurrentOpacity(true),
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mFormat(PIXEL_FORMAT_NONE),
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mGLExtensions(GLExtensions::getInstance()),
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mOpaqueLayer(true),
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mNeedsDithering(false),
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mSecure(false),
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mProtectedByApp(false)
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{
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mCurrentCrop.makeInvalid();
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glGenTextures(1, &mTextureName);
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}
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void Layer::onFirstRef()
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{
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LayerBaseClient::onFirstRef();
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struct FrameQueuedListener : public SurfaceTexture::FrameAvailableListener {
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FrameQueuedListener(Layer* layer) : mLayer(layer) { }
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private:
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wp<Layer> mLayer;
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virtual void onFrameAvailable() {
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sp<Layer> that(mLayer.promote());
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if (that != 0) {
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that->onFrameQueued();
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}
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}
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};
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mSurfaceTexture = new SurfaceTextureLayer(mTextureName, this);
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mSurfaceTexture->setFrameAvailableListener(new FrameQueuedListener(this));
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mSurfaceTexture->setSynchronousMode(true);
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mSurfaceTexture->setBufferCountServer(2);
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}
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Layer::~Layer()
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{
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mFlinger->postMessageAsync(
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new SurfaceFlinger::MessageDestroyGLTexture(mTextureName) );
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}
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void Layer::onFrameQueued() {
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android_atomic_inc(&mQueuedFrames);
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mFlinger->signalEvent();
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}
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// called with SurfaceFlinger::mStateLock as soon as the layer is entered
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// in the purgatory list
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void Layer::onRemoved()
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{
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mSurfaceTexture->abandon();
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}
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void Layer::setName(const String8& name) {
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LayerBase::setName(name);
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mSurfaceTexture->setName(name);
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}
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sp<ISurface> Layer::createSurface()
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{
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class BSurface : public BnSurface, public LayerCleaner {
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wp<const Layer> mOwner;
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virtual sp<ISurfaceTexture> getSurfaceTexture() const {
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sp<ISurfaceTexture> res;
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sp<const Layer> that( mOwner.promote() );
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if (that != NULL) {
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res = that->mSurfaceTexture;
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}
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return res;
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}
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public:
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BSurface(const sp<SurfaceFlinger>& flinger,
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const sp<Layer>& layer)
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: LayerCleaner(flinger, layer), mOwner(layer) { }
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};
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sp<ISurface> sur(new BSurface(mFlinger, this));
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return sur;
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}
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wp<IBinder> Layer::getSurfaceTextureBinder() const
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{
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return mSurfaceTexture->asBinder();
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}
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status_t Layer::setBuffers( uint32_t w, uint32_t h,
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PixelFormat format, uint32_t flags)
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{
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// this surfaces pixel format
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PixelFormatInfo info;
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status_t err = getPixelFormatInfo(format, &info);
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if (err) return err;
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// the display's pixel format
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const DisplayHardware& hw(graphicPlane(0).displayHardware());
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uint32_t const maxSurfaceDims = min(
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hw.getMaxTextureSize(), hw.getMaxViewportDims());
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// never allow a surface larger than what our underlying GL implementation
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// can handle.
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if ((uint32_t(w)>maxSurfaceDims) || (uint32_t(h)>maxSurfaceDims)) {
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return BAD_VALUE;
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}
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PixelFormatInfo displayInfo;
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getPixelFormatInfo(hw.getFormat(), &displayInfo);
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const uint32_t hwFlags = hw.getFlags();
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mFormat = format;
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mSecure = (flags & ISurfaceComposer::eSecure) ? true : false;
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mProtectedByApp = (flags & ISurfaceComposer::eProtectedByApp) ? true : false;
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mOpaqueLayer = (flags & ISurfaceComposer::eOpaque);
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mCurrentOpacity = getOpacityForFormat(format);
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mSurfaceTexture->setDefaultBufferSize(w, h);
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mSurfaceTexture->setDefaultBufferFormat(format);
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// we use the red index
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int displayRedSize = displayInfo.getSize(PixelFormatInfo::INDEX_RED);
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int layerRedsize = info.getSize(PixelFormatInfo::INDEX_RED);
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mNeedsDithering = layerRedsize > displayRedSize;
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return NO_ERROR;
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}
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void Layer::setGeometry(hwc_layer_t* hwcl)
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{
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LayerBaseClient::setGeometry(hwcl);
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hwcl->flags &= ~HWC_SKIP_LAYER;
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// we can't do alpha-fade with the hwc HAL
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const State& s(drawingState());
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if (s.alpha < 0xFF) {
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hwcl->flags = HWC_SKIP_LAYER;
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}
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/*
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* Transformations are applied in this order:
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* 1) buffer orientation/flip/mirror
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* 2) state transformation (window manager)
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* 3) layer orientation (screen orientation)
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* mTransform is already the composition of (2) and (3)
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* (NOTE: the matrices are multiplied in reverse order)
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*/
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const Transform bufferOrientation(mCurrentTransform);
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const Transform tr(mTransform * bufferOrientation);
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// this gives us only the "orientation" component of the transform
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const uint32_t finalTransform = tr.getOrientation();
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// we can only handle simple transformation
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if (finalTransform & Transform::ROT_INVALID) {
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hwcl->flags = HWC_SKIP_LAYER;
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} else {
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hwcl->transform = finalTransform;
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}
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if (isCropped()) {
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hwcl->sourceCrop.left = mCurrentCrop.left;
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hwcl->sourceCrop.top = mCurrentCrop.top;
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hwcl->sourceCrop.right = mCurrentCrop.right;
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hwcl->sourceCrop.bottom = mCurrentCrop.bottom;
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} else {
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const sp<GraphicBuffer>& buffer(mActiveBuffer);
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hwcl->sourceCrop.left = 0;
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hwcl->sourceCrop.top = 0;
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if (buffer != NULL) {
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hwcl->sourceCrop.right = buffer->width;
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hwcl->sourceCrop.bottom = buffer->height;
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} else {
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hwcl->sourceCrop.right = mTransformedBounds.width();
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hwcl->sourceCrop.bottom = mTransformedBounds.height();
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}
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}
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}
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void Layer::setPerFrameData(hwc_layer_t* hwcl) {
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const sp<GraphicBuffer>& buffer(mActiveBuffer);
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if (buffer == NULL) {
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// this can happen if the client never drew into this layer yet,
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// or if we ran out of memory. In that case, don't let
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// HWC handle it.
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hwcl->flags |= HWC_SKIP_LAYER;
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hwcl->handle = NULL;
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} else {
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hwcl->handle = buffer->handle;
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}
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}
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void Layer::onDraw(const Region& clip) const
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{
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if (CC_UNLIKELY(mActiveBuffer == 0)) {
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// the texture has not been created yet, this Layer has
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// in fact never been drawn into. This happens frequently with
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// SurfaceView because the WindowManager can't know when the client
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// has drawn the first time.
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// If there is nothing under us, we paint the screen in black, otherwise
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// we just skip this update.
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// figure out if there is something below us
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Region under;
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const SurfaceFlinger::LayerVector& drawingLayers(
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mFlinger->mDrawingState.layersSortedByZ);
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const size_t count = drawingLayers.size();
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for (size_t i=0 ; i<count ; ++i) {
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const sp<LayerBase>& layer(drawingLayers[i]);
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if (layer.get() == static_cast<LayerBase const*>(this))
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break;
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under.orSelf(layer->visibleRegionScreen);
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}
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// if not everything below us is covered, we plug the holes!
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Region holes(clip.subtract(under));
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if (!holes.isEmpty()) {
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clearWithOpenGL(holes, 0, 0, 0, 1);
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}
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return;
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}
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if (!isProtected()) {
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glBindTexture(GL_TEXTURE_EXTERNAL_OES, mTextureName);
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GLenum filter = GL_NEAREST;
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if (getFiltering() || needsFiltering() || isFixedSize() || isCropped()) {
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// TODO: we could be more subtle with isFixedSize()
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filter = GL_LINEAR;
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}
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glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, filter);
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glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, filter);
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glMatrixMode(GL_TEXTURE);
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glLoadMatrixf(mTextureMatrix);
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glMatrixMode(GL_MODELVIEW);
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glEnable(GL_TEXTURE_EXTERNAL_OES);
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glDisable(GL_TEXTURE_2D);
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} else {
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glBindTexture(GL_TEXTURE_2D, mFlinger->getProtectedTexName());
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glMatrixMode(GL_TEXTURE);
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glLoadIdentity();
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glMatrixMode(GL_MODELVIEW);
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glDisable(GL_TEXTURE_EXTERNAL_OES);
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glEnable(GL_TEXTURE_2D);
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}
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drawWithOpenGL(clip);
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glDisable(GL_TEXTURE_EXTERNAL_OES);
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glDisable(GL_TEXTURE_2D);
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}
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// As documented in libhardware header, formats in the range
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// 0x100 - 0x1FF are specific to the HAL implementation, and
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// are known to have no alpha channel
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// TODO: move definition for device-specific range into
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// hardware.h, instead of using hard-coded values here.
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#define HARDWARE_IS_DEVICE_FORMAT(f) ((f) >= 0x100 && (f) <= 0x1FF)
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bool Layer::getOpacityForFormat(uint32_t format)
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{
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if (HARDWARE_IS_DEVICE_FORMAT(format)) {
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return true;
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}
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PixelFormatInfo info;
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status_t err = getPixelFormatInfo(PixelFormat(format), &info);
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// in case of error (unknown format), we assume no blending
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return (err || info.h_alpha <= info.l_alpha);
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}
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bool Layer::isOpaque() const
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{
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// if we don't have a buffer yet, we're translucent regardless of the
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// layer's opaque flag.
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if (mActiveBuffer == 0) {
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return false;
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}
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// if the layer has the opaque flag, then we're always opaque,
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// otherwise we use the current buffer's format.
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return mOpaqueLayer || mCurrentOpacity;
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}
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bool Layer::isProtected() const
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{
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const sp<GraphicBuffer>& activeBuffer(mActiveBuffer);
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return (activeBuffer != 0) &&
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(activeBuffer->getUsage() & GRALLOC_USAGE_PROTECTED);
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}
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uint32_t Layer::doTransaction(uint32_t flags)
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{
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const Layer::State& front(drawingState());
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const Layer::State& temp(currentState());
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const bool sizeChanged = (front.requested_w != temp.requested_w) ||
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(front.requested_h != temp.requested_h);
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if (sizeChanged) {
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// the size changed, we need to ask our client to request a new buffer
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LOGD_IF(DEBUG_RESIZE,
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"doTransaction: "
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"resize (layer=%p), requested (%dx%d), drawing (%d,%d), "
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"scalingMode=%d",
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this,
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int(temp.requested_w), int(temp.requested_h),
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int(front.requested_w), int(front.requested_h),
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mCurrentScalingMode);
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if (!isFixedSize()) {
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// we're being resized and there is a freeze display request,
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// acquire a freeze lock, so that the screen stays put
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// until we've redrawn at the new size; this is to avoid
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// glitches upon orientation changes.
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if (mFlinger->hasFreezeRequest()) {
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// if the surface is hidden, don't try to acquire the
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// freeze lock, since hidden surfaces may never redraw
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if (!(front.flags & ISurfaceComposer::eLayerHidden)) {
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mFreezeLock = mFlinger->getFreezeLock();
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}
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}
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// this will make sure LayerBase::doTransaction doesn't update
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// the drawing state's size
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Layer::State& editDraw(mDrawingState);
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editDraw.requested_w = temp.requested_w;
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editDraw.requested_h = temp.requested_h;
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}
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// record the new size, form this point on, when the client request
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// a buffer, it'll get the new size.
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mSurfaceTexture->setDefaultBufferSize(temp.requested_w,
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temp.requested_h);
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}
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if (temp.sequence != front.sequence) {
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if (temp.flags & ISurfaceComposer::eLayerHidden || temp.alpha == 0) {
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// this surface is now hidden, so it shouldn't hold a freeze lock
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// (it may never redraw, which is fine if it is hidden)
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mFreezeLock.clear();
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}
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}
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return LayerBase::doTransaction(flags);
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}
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bool Layer::isFixedSize() const {
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return mCurrentScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE;
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}
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bool Layer::isCropped() const {
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return !mCurrentCrop.isEmpty();
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}
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// ----------------------------------------------------------------------------
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// pageflip handling...
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// ----------------------------------------------------------------------------
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void Layer::lockPageFlip(bool& recomputeVisibleRegions)
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{
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if (mQueuedFrames > 0) {
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// Capture the old state of the layer for comparisons later
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const bool oldOpacity = isOpaque();
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sp<GraphicBuffer> oldActiveBuffer = mActiveBuffer;
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// signal another event if we have more frames pending
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if (android_atomic_dec(&mQueuedFrames) > 1) {
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mFlinger->signalEvent();
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}
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if (mSurfaceTexture->updateTexImage() < NO_ERROR) {
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// something happened!
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recomputeVisibleRegions = true;
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return;
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}
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// update the active buffer
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mActiveBuffer = mSurfaceTexture->getCurrentBuffer();
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const Rect crop(mSurfaceTexture->getCurrentCrop());
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const uint32_t transform(mSurfaceTexture->getCurrentTransform());
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const uint32_t scalingMode(mSurfaceTexture->getCurrentScalingMode());
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if ((crop != mCurrentCrop) ||
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(transform != mCurrentTransform) ||
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(scalingMode != mCurrentScalingMode))
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{
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mCurrentCrop = crop;
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mCurrentTransform = transform;
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mCurrentScalingMode = scalingMode;
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mFlinger->invalidateHwcGeometry();
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}
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GLfloat textureMatrix[16];
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mSurfaceTexture->getTransformMatrix(textureMatrix);
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if (memcmp(textureMatrix, mTextureMatrix, sizeof(textureMatrix))) {
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memcpy(mTextureMatrix, textureMatrix, sizeof(textureMatrix));
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mFlinger->invalidateHwcGeometry();
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}
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uint32_t bufWidth = mActiveBuffer->getWidth();
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uint32_t bufHeight = mActiveBuffer->getHeight();
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if (oldActiveBuffer != NULL) {
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if (bufWidth != uint32_t(oldActiveBuffer->width) ||
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bufHeight != uint32_t(oldActiveBuffer->height)) {
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mFlinger->invalidateHwcGeometry();
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}
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}
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mCurrentOpacity = getOpacityForFormat(mActiveBuffer->format);
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if (oldOpacity != isOpaque()) {
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recomputeVisibleRegions = true;
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}
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glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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// update the layer size and release freeze-lock
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const Layer::State& front(drawingState());
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// FIXME: mPostedDirtyRegion = dirty & bounds
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mPostedDirtyRegion.set(front.w, front.h);
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if ((front.w != front.requested_w) ||
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(front.h != front.requested_h))
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{
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// check that we received a buffer of the right size
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// (Take the buffer's orientation into account)
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if (mCurrentTransform & Transform::ROT_90) {
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swap(bufWidth, bufHeight);
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}
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if (isFixedSize() ||
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(bufWidth == front.requested_w &&
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bufHeight == front.requested_h))
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{
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// Here we pretend the transaction happened by updating the
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// current and drawing states. Drawing state is only accessed
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// in this thread, no need to have it locked
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Layer::State& editDraw(mDrawingState);
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editDraw.w = editDraw.requested_w;
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editDraw.h = editDraw.requested_h;
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// We also need to update the current state so that we don't
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// end-up doing too much work during the next transaction.
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// NOTE: We actually don't need hold the transaction lock here
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// because State::w and State::h are only accessed from
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// this thread
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Layer::State& editTemp(currentState());
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editTemp.w = editDraw.w;
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editTemp.h = editDraw.h;
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// recompute visible region
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recomputeVisibleRegions = true;
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// we now have the correct size, unfreeze the screen
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mFreezeLock.clear();
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}
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LOGD_IF(DEBUG_RESIZE,
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"lockPageFlip : "
|
|
" (layer=%p), buffer (%ux%u, tr=%02x), "
|
|
"requested (%dx%d)",
|
|
this,
|
|
bufWidth, bufHeight, mCurrentTransform,
|
|
front.requested_w, front.requested_h);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Layer::unlockPageFlip(
|
|
const Transform& planeTransform, Region& outDirtyRegion)
|
|
{
|
|
Region dirtyRegion(mPostedDirtyRegion);
|
|
if (!dirtyRegion.isEmpty()) {
|
|
mPostedDirtyRegion.clear();
|
|
// The dirty region is given in the layer's coordinate space
|
|
// transform the dirty region by the surface's transformation
|
|
// and the global transformation.
|
|
const Layer::State& s(drawingState());
|
|
const Transform tr(planeTransform * s.transform);
|
|
dirtyRegion = tr.transform(dirtyRegion);
|
|
|
|
// At this point, the dirty region is in screen space.
|
|
// Make sure it's constrained by the visible region (which
|
|
// is in screen space as well).
|
|
dirtyRegion.andSelf(visibleRegionScreen);
|
|
outDirtyRegion.orSelf(dirtyRegion);
|
|
}
|
|
if (visibleRegionScreen.isEmpty()) {
|
|
// an invisible layer should not hold a freeze-lock
|
|
// (because it may never be updated and therefore never release it)
|
|
mFreezeLock.clear();
|
|
}
|
|
}
|
|
|
|
void Layer::dump(String8& result, char* buffer, size_t SIZE) const
|
|
{
|
|
LayerBaseClient::dump(result, buffer, SIZE);
|
|
|
|
sp<const GraphicBuffer> buf0(mActiveBuffer);
|
|
uint32_t w0=0, h0=0, s0=0, f0=0;
|
|
if (buf0 != 0) {
|
|
w0 = buf0->getWidth();
|
|
h0 = buf0->getHeight();
|
|
s0 = buf0->getStride();
|
|
f0 = buf0->format;
|
|
}
|
|
snprintf(buffer, SIZE,
|
|
" "
|
|
"format=%2d, activeBuffer=[%4ux%4u:%4u,%3X],"
|
|
" freezeLock=%p, transform-hint=0x%02x, queued-frames=%d\n",
|
|
mFormat, w0, h0, s0,f0,
|
|
getFreezeLock().get(), getTransformHint(), mQueuedFrames);
|
|
|
|
result.append(buffer);
|
|
|
|
if (mSurfaceTexture != 0) {
|
|
mSurfaceTexture->dump(result, " ", buffer, SIZE);
|
|
}
|
|
}
|
|
|
|
uint32_t Layer::getEffectiveUsage(uint32_t usage) const
|
|
{
|
|
// TODO: should we do something special if mSecure is set?
|
|
if (mProtectedByApp) {
|
|
// need a hardware-protected path to external video sink
|
|
usage |= GraphicBuffer::USAGE_PROTECTED;
|
|
}
|
|
usage |= GraphicBuffer::USAGE_HW_COMPOSER;
|
|
return usage;
|
|
}
|
|
|
|
uint32_t Layer::getTransformHint() const {
|
|
uint32_t orientation = 0;
|
|
if (!mFlinger->mDebugDisableTransformHint) {
|
|
orientation = getPlaneOrientation();
|
|
if (orientation & Transform::ROT_INVALID) {
|
|
orientation = 0;
|
|
}
|
|
}
|
|
return orientation;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
|
|
}; // namespace android
|