c397360883
we used to have a visibleRegion object per layer, but now it's per screen; so at somepoint the code got changed to calculate the per-screen visible region on the stack and that's what got passed to HWC. we're now setting the visibleRegionScreen at each frame and freeing at after the HWC set() call. We use the underlaying SharedBuffer so that in most cases we don't have to allocate, free or copy memory around. Bug: 7089478 Change-Id: I24fa556c76613a225d9fe7a6c6b727bb476144d8
560 lines
16 KiB
C++
560 lines
16 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 <utils/Errors.h>
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#include <utils/Log.h>
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#include <binder/IPCThreadState.h>
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#include <binder/IServiceManager.h>
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#include <GLES/gl.h>
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#include <GLES/glext.h>
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#include <hardware/hardware.h>
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#include "clz.h"
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#include "Client.h"
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#include "LayerBase.h"
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#include "Layer.h"
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#include "SurfaceFlinger.h"
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#include "DisplayDevice.h"
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namespace android {
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// ---------------------------------------------------------------------------
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int32_t LayerBase::sSequence = 1;
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LayerBase::LayerBase(SurfaceFlinger* flinger)
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: contentDirty(false),
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sequence(uint32_t(android_atomic_inc(&sSequence))),
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mFlinger(flinger), mFiltering(false),
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mNeedsFiltering(false),
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mTransactionFlags(0),
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mPremultipliedAlpha(true), mName("unnamed"), mDebug(false)
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{
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}
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LayerBase::~LayerBase()
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{
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}
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void LayerBase::setName(const String8& name) {
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mName = name;
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}
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String8 LayerBase::getName() const {
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return mName;
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}
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void LayerBase::initStates(uint32_t w, uint32_t h, uint32_t flags)
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{
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uint32_t layerFlags = 0;
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if (flags & ISurfaceComposerClient::eHidden)
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layerFlags = layer_state_t::eLayerHidden;
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if (flags & ISurfaceComposerClient::eNonPremultiplied)
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mPremultipliedAlpha = false;
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mCurrentState.active.w = w;
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mCurrentState.active.h = h;
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mCurrentState.active.crop.makeInvalid();
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mCurrentState.z = 0;
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mCurrentState.alpha = 0xFF;
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mCurrentState.layerStack = 0;
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mCurrentState.flags = layerFlags;
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mCurrentState.sequence = 0;
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mCurrentState.transform.set(0, 0);
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mCurrentState.requested = mCurrentState.active;
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// drawing state & current state are identical
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mDrawingState = mCurrentState;
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}
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void LayerBase::commitTransaction() {
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mDrawingState = mCurrentState;
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}
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void LayerBase::forceVisibilityTransaction() {
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// this can be called without SurfaceFlinger.mStateLock, but if we
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// can atomically increment the sequence number, it doesn't matter.
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android_atomic_inc(&mCurrentState.sequence);
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requestTransaction();
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}
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bool LayerBase::requestTransaction() {
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int32_t old = setTransactionFlags(eTransactionNeeded);
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return ((old & eTransactionNeeded) == 0);
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}
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uint32_t LayerBase::getTransactionFlags(uint32_t flags) {
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return android_atomic_and(~flags, &mTransactionFlags) & flags;
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}
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uint32_t LayerBase::setTransactionFlags(uint32_t flags) {
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return android_atomic_or(flags, &mTransactionFlags);
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}
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bool LayerBase::setPosition(float x, float y) {
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if (mCurrentState.transform.tx() == x && mCurrentState.transform.ty() == y)
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return false;
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mCurrentState.sequence++;
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mCurrentState.transform.set(x, y);
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requestTransaction();
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return true;
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}
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bool LayerBase::setLayer(uint32_t z) {
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if (mCurrentState.z == z)
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return false;
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mCurrentState.sequence++;
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mCurrentState.z = z;
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requestTransaction();
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return true;
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}
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bool LayerBase::setSize(uint32_t w, uint32_t h) {
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if (mCurrentState.requested.w == w && mCurrentState.requested.h == h)
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return false;
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mCurrentState.requested.w = w;
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mCurrentState.requested.h = h;
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requestTransaction();
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return true;
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}
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bool LayerBase::setAlpha(uint8_t alpha) {
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if (mCurrentState.alpha == alpha)
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return false;
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mCurrentState.sequence++;
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mCurrentState.alpha = alpha;
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requestTransaction();
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return true;
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}
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bool LayerBase::setMatrix(const layer_state_t::matrix22_t& matrix) {
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mCurrentState.sequence++;
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mCurrentState.transform.set(
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matrix.dsdx, matrix.dsdy, matrix.dtdx, matrix.dtdy);
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requestTransaction();
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return true;
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}
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bool LayerBase::setTransparentRegionHint(const Region& transparent) {
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mCurrentState.sequence++;
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mCurrentState.transparentRegion = transparent;
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requestTransaction();
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return true;
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}
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bool LayerBase::setFlags(uint8_t flags, uint8_t mask) {
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const uint32_t newFlags = (mCurrentState.flags & ~mask) | (flags & mask);
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if (mCurrentState.flags == newFlags)
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return false;
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mCurrentState.sequence++;
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mCurrentState.flags = newFlags;
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requestTransaction();
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return true;
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}
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bool LayerBase::setCrop(const Rect& crop) {
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if (mCurrentState.requested.crop == crop)
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return false;
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mCurrentState.sequence++;
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mCurrentState.requested.crop = crop;
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requestTransaction();
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return true;
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}
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bool LayerBase::setLayerStack(uint32_t layerStack) {
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if (mCurrentState.layerStack == layerStack)
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return false;
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mCurrentState.sequence++;
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mCurrentState.layerStack = layerStack;
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requestTransaction();
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return true;
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}
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void LayerBase::setVisibleRegion(const Region& visibleRegion) {
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// always called from main thread
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this->visibleRegion = visibleRegion;
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}
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void LayerBase::setCoveredRegion(const Region& coveredRegion) {
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// always called from main thread
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this->coveredRegion = coveredRegion;
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}
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uint32_t LayerBase::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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// always set active to requested, unless we're asked not to
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// this is used by Layer, which special cases resizes.
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if (flags & eDontUpdateGeometryState) {
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} else {
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Layer::State& editTemp(currentState());
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editTemp.active = temp.requested;
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}
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if (front.active != temp.active) {
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// invalidate and recompute the visible regions if needed
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flags |= Layer::eVisibleRegion;
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}
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if (temp.sequence != front.sequence) {
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// invalidate and recompute the visible regions if needed
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flags |= eVisibleRegion;
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this->contentDirty = true;
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// we may use linear filtering, if the matrix scales us
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const uint8_t type = temp.transform.getType();
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mNeedsFiltering = (!temp.transform.preserveRects() ||
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(type >= Transform::SCALE));
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}
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// Commit the transaction
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commitTransaction();
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return flags;
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}
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void LayerBase::computeGeometry(const sp<const DisplayDevice>& hw, LayerMesh* mesh) const
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{
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const Layer::State& s(drawingState());
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const Transform tr(hw->getTransform() * s.transform);
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const uint32_t hw_h = hw->getHeight();
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const Rect& crop(s.active.crop);
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Rect win(s.active.w, s.active.h);
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if (!crop.isEmpty()) {
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win.intersect(crop, &win);
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}
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if (mesh) {
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tr.transform(mesh->mVertices[0], win.left, win.top);
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tr.transform(mesh->mVertices[1], win.left, win.bottom);
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tr.transform(mesh->mVertices[2], win.right, win.bottom);
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tr.transform(mesh->mVertices[3], win.right, win.top);
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for (size_t i=0 ; i<4 ; i++) {
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mesh->mVertices[i][1] = hw_h - mesh->mVertices[i][1];
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}
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}
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}
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Rect LayerBase::computeBounds() const {
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const Layer::State& s(drawingState());
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const Rect& crop(s.active.crop);
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Rect win(s.active.w, s.active.h);
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if (!crop.isEmpty()) {
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win.intersect(crop, &win);
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}
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return s.transform.transform(win);
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}
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Region LayerBase::latchBuffer(bool& recomputeVisibleRegions) {
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Region result;
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return result;
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}
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void LayerBase::setGeometry(
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const sp<const DisplayDevice>& hw,
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HWComposer::HWCLayerInterface& layer)
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{
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layer.setDefaultState();
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// this gives us only the "orientation" component of the transform
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const State& s(drawingState());
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const uint32_t finalTransform = s.transform.getOrientation();
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// we can only handle simple transformation
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if (finalTransform & Transform::ROT_INVALID) {
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layer.setTransform(0);
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} else {
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layer.setTransform(finalTransform);
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}
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if (!isOpaque()) {
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layer.setBlending(mPremultipliedAlpha ?
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HWC_BLENDING_PREMULT :
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HWC_BLENDING_COVERAGE);
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}
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const Transform& tr = hw->getTransform();
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Rect transformedBounds(computeBounds());
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transformedBounds = tr.transform(transformedBounds);
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// scaling is already applied in transformedBounds
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layer.setFrame(transformedBounds);
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layer.setCrop(transformedBounds.getBounds());
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}
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void LayerBase::setPerFrameData(const sp<const DisplayDevice>& hw,
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HWComposer::HWCLayerInterface& layer) {
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layer.setBuffer(0);
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// we have to set the visible region on every frame because
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// we currently free it during onLayerDisplayed(), which is called
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// after HWComposer::commit() -- every frame.
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const Transform& tr = hw->getTransform();
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layer.setVisibleRegionScreen(tr.transform(visibleRegion));
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}
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void LayerBase::setAcquireFence(const sp<const DisplayDevice>& hw,
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HWComposer::HWCLayerInterface& layer) {
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layer.setAcquireFenceFd(-1);
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}
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void LayerBase::onLayerDisplayed(const sp<const DisplayDevice>& hw,
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HWComposer::HWCLayerInterface* layer) {
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if (layer) {
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layer->onDisplayed();
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}
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}
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void LayerBase::setFiltering(bool filtering)
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{
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mFiltering = filtering;
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}
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bool LayerBase::getFiltering() const
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{
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return mFiltering;
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}
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void LayerBase::draw(const sp<const DisplayDevice>& hw, const Region& clip) const
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{
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onDraw(hw, clip);
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}
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void LayerBase::draw(const sp<const DisplayDevice>& hw)
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{
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onDraw( hw, Region(hw->bounds()) );
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}
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void LayerBase::clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip,
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GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha) const
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{
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const uint32_t fbHeight = hw->getHeight();
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glColor4f(red,green,blue,alpha);
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glDisable(GL_TEXTURE_EXTERNAL_OES);
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glDisable(GL_TEXTURE_2D);
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glDisable(GL_BLEND);
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LayerMesh mesh;
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computeGeometry(hw, &mesh);
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glVertexPointer(2, GL_FLOAT, 0, mesh.getVertices());
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glDrawArrays(GL_TRIANGLE_FAN, 0, mesh.getVertexCount());
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}
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void LayerBase::clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip) const
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{
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clearWithOpenGL(hw, clip, 0,0,0,0);
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}
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void LayerBase::drawWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip) const
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{
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const uint32_t fbHeight = hw->getHeight();
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const State& s(drawingState());
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GLenum src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA;
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if (CC_UNLIKELY(s.alpha < 0xFF)) {
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const GLfloat alpha = s.alpha * (1.0f/255.0f);
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if (mPremultipliedAlpha) {
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glColor4f(alpha, alpha, alpha, alpha);
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} else {
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glColor4f(1, 1, 1, alpha);
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}
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glEnable(GL_BLEND);
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glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
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glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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} else {
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glColor4f(1, 1, 1, 1);
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glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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if (!isOpaque()) {
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glEnable(GL_BLEND);
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glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
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} else {
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glDisable(GL_BLEND);
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}
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}
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LayerMesh mesh;
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computeGeometry(hw, &mesh);
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// TODO: we probably want to generate the texture coords with the mesh
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// here we assume that we only have 4 vertices
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struct TexCoords {
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GLfloat u;
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GLfloat v;
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};
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Rect crop(s.active.w, s.active.h);
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if (!s.active.crop.isEmpty()) {
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crop = s.active.crop;
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}
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GLfloat left = GLfloat(crop.left) / GLfloat(s.active.w);
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GLfloat top = GLfloat(crop.top) / GLfloat(s.active.h);
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GLfloat right = GLfloat(crop.right) / GLfloat(s.active.w);
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GLfloat bottom = GLfloat(crop.bottom) / GLfloat(s.active.h);
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TexCoords texCoords[4];
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texCoords[0].u = left;
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texCoords[0].v = top;
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texCoords[1].u = left;
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texCoords[1].v = bottom;
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texCoords[2].u = right;
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texCoords[2].v = bottom;
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texCoords[3].u = right;
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texCoords[3].v = top;
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for (int i = 0; i < 4; i++) {
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texCoords[i].v = 1.0f - texCoords[i].v;
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}
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
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glVertexPointer(2, GL_FLOAT, 0, mesh.getVertices());
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glDrawArrays(GL_TRIANGLE_FAN, 0, mesh.getVertexCount());
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glDisable(GL_BLEND);
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}
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void LayerBase::dump(String8& result, char* buffer, size_t SIZE) const
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{
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const Layer::State& s(drawingState());
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snprintf(buffer, SIZE,
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"+ %s %p (%s)\n",
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getTypeId(), this, getName().string());
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result.append(buffer);
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s.transparentRegion.dump(result, "transparentRegion");
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visibleRegion.dump(result, "visibleRegion");
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snprintf(buffer, SIZE,
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" "
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"layerStack=%4d, z=%9d, pos=(%g,%g), size=(%4d,%4d), crop=(%4d,%4d,%4d,%4d), "
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"isOpaque=%1d, needsDithering=%1d, invalidate=%1d, "
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"alpha=0x%02x, flags=0x%08x, tr=[%.2f, %.2f][%.2f, %.2f]\n",
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s.z, s.layerStack, s.transform.tx(), s.transform.ty(), s.active.w, s.active.h,
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s.active.crop.left, s.active.crop.top,
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s.active.crop.right, s.active.crop.bottom,
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isOpaque(), needsDithering(), contentDirty,
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s.alpha, s.flags,
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s.transform[0][0], s.transform[0][1],
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s.transform[1][0], s.transform[1][1]);
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result.append(buffer);
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}
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void LayerBase::shortDump(String8& result, char* scratch, size_t size) const {
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LayerBase::dump(result, scratch, size);
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}
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void LayerBase::dumpStats(String8& result, char* scratch, size_t SIZE) const {
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}
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void LayerBase::clearStats() {
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}
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sp<LayerBaseClient> LayerBase::getLayerBaseClient() const {
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return 0;
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}
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sp<Layer> LayerBase::getLayer() const {
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return 0;
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}
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// ---------------------------------------------------------------------------
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int32_t LayerBaseClient::sIdentity = 1;
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LayerBaseClient::LayerBaseClient(SurfaceFlinger* flinger,
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const sp<Client>& client)
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: LayerBase(flinger),
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mHasSurface(false),
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mClientRef(client),
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mIdentity(uint32_t(android_atomic_inc(&sIdentity)))
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{
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}
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LayerBaseClient::~LayerBaseClient()
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{
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sp<Client> c(mClientRef.promote());
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if (c != 0) {
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c->detachLayer(this);
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}
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}
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sp<ISurface> LayerBaseClient::createSurface()
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{
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class BSurface : public BnSurface, public LayerCleaner {
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virtual sp<ISurfaceTexture> getSurfaceTexture() const { return 0; }
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public:
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BSurface(const sp<SurfaceFlinger>& flinger,
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const sp<LayerBaseClient>& layer)
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: LayerCleaner(flinger, 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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sp<ISurface> LayerBaseClient::getSurface()
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{
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sp<ISurface> s;
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Mutex::Autolock _l(mLock);
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LOG_ALWAYS_FATAL_IF(mHasSurface,
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"LayerBaseClient::getSurface() has already been called");
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mHasSurface = true;
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|
s = createSurface();
|
|
mClientSurfaceBinder = s->asBinder();
|
|
return s;
|
|
}
|
|
|
|
wp<IBinder> LayerBaseClient::getSurfaceBinder() const {
|
|
return mClientSurfaceBinder;
|
|
}
|
|
|
|
wp<IBinder> LayerBaseClient::getSurfaceTextureBinder() const {
|
|
return 0;
|
|
}
|
|
|
|
void LayerBaseClient::dump(String8& result, char* buffer, size_t SIZE) const
|
|
{
|
|
LayerBase::dump(result, buffer, SIZE);
|
|
|
|
sp<Client> client(mClientRef.promote());
|
|
snprintf(buffer, SIZE,
|
|
" client=%p, identity=%u\n",
|
|
client.get(), getIdentity());
|
|
|
|
result.append(buffer);
|
|
}
|
|
|
|
|
|
void LayerBaseClient::shortDump(String8& result, char* scratch, size_t size) const
|
|
{
|
|
LayerBaseClient::dump(result, scratch, size);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
LayerBaseClient::LayerCleaner::LayerCleaner(const sp<SurfaceFlinger>& flinger,
|
|
const sp<LayerBaseClient>& layer)
|
|
: mFlinger(flinger), mLayer(layer) {
|
|
}
|
|
|
|
LayerBaseClient::LayerCleaner::~LayerCleaner() {
|
|
// destroy client resources
|
|
mFlinger->onLayerDestroyed(mLayer);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
}; // namespace android
|