584 lines
17 KiB
C++
584 lines
17 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 "LayerBase.h"
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#include "SurfaceFlinger.h"
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#include "DisplayHardware/DisplayHardware.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, DisplayID display)
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: dpy(display), 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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mOrientation(0),
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mTransactionFlags(0),
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mPremultipliedAlpha(true), mName("unnamed"), mDebug(false),
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mInvalidate(0)
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{
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const DisplayHardware& hw(flinger->graphicPlane(0).displayHardware());
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mFlags = hw.getFlags();
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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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const GraphicPlane& LayerBase::graphicPlane(int dpy) const
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{
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return mFlinger->graphicPlane(dpy);
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}
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GraphicPlane& LayerBase::graphicPlane(int dpy)
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{
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return mFlinger->graphicPlane(dpy);
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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 & ISurfaceComposer::eHidden)
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layerFlags = ISurfaceComposer::eLayerHidden;
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if (flags & ISurfaceComposer::eNonPremultiplied)
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mPremultipliedAlpha = false;
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mCurrentState.z = 0;
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mCurrentState.w = w;
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mCurrentState.h = h;
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mCurrentState.requested_w = w;
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mCurrentState.requested_h = h;
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mCurrentState.alpha = 0xFF;
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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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// 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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Rect LayerBase::visibleBounds() const
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{
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return mTransformedBounds;
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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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visibleRegionScreen = 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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coveredRegionScreen = 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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if ((front.requested_w != temp.requested_w) ||
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(front.requested_h != temp.requested_h)) {
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// resize the layer, set the physical size to the requested size
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Layer::State& editTemp(currentState());
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editTemp.w = temp.requested_w;
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editTemp.h = temp.requested_h;
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}
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if ((front.w != temp.w) || (front.h != temp.h)) {
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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::validateVisibility(const Transform& planeTransform)
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{
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const Layer::State& s(drawingState());
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const Transform tr(planeTransform * s.transform);
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const bool transformed = tr.transformed();
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const DisplayHardware& hw(graphicPlane(0).displayHardware());
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const uint32_t hw_h = hw.getHeight();
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uint32_t w = s.w;
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uint32_t h = s.h;
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tr.transform(mVertices[0], 0, 0);
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tr.transform(mVertices[1], 0, h);
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tr.transform(mVertices[2], w, h);
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tr.transform(mVertices[3], w, 0);
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for (size_t i=0 ; i<4 ; i++)
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mVertices[i][1] = hw_h - mVertices[i][1];
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if (UNLIKELY(transformed)) {
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// NOTE: here we could also punt if we have too many rectangles
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// in the transparent region
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if (tr.preserveRects()) {
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// transform the transparent region
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transparentRegionScreen = tr.transform(s.transparentRegion);
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} else {
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// transformation too complex, can't do the transparent region
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// optimization.
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transparentRegionScreen.clear();
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}
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} else {
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transparentRegionScreen = s.transparentRegion;
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}
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// cache a few things...
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mOrientation = tr.getOrientation();
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mTransform = tr;
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mTransformedBounds = tr.makeBounds(w, h);
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}
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void LayerBase::lockPageFlip(bool& recomputeVisibleRegions)
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{
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}
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void LayerBase::unlockPageFlip(
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const Transform& planeTransform, Region& outDirtyRegion)
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{
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if ((android_atomic_and(~1, &mInvalidate)&1) == 1) {
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outDirtyRegion.orSelf(visibleRegionScreen);
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}
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}
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void LayerBase::invalidate()
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{
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if ((android_atomic_or(1, &mInvalidate)&1) == 0) {
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mFlinger->signalEvent();
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}
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}
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void LayerBase::drawRegion(const Region& reg) const
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{
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Region::const_iterator it = reg.begin();
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Region::const_iterator const end = reg.end();
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if (it != end) {
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Rect r;
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const DisplayHardware& hw(graphicPlane(0).displayHardware());
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const int32_t fbWidth = hw.getWidth();
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const int32_t fbHeight = hw.getHeight();
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const GLshort vertices[][2] = { { 0, 0 }, { fbWidth, 0 },
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{ fbWidth, fbHeight }, { 0, fbHeight } };
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glVertexPointer(2, GL_SHORT, 0, vertices);
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while (it != end) {
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const Rect& r = *it++;
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const GLint sy = fbHeight - (r.top + r.height());
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glScissor(r.left, sy, r.width(), r.height());
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glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
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}
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}
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}
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void LayerBase::setGeometry(hwc_layer_t* hwcl)
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{
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hwcl->compositionType = HWC_FRAMEBUFFER;
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hwcl->hints = 0;
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hwcl->flags = HWC_SKIP_LAYER;
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hwcl->transform = 0;
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hwcl->blending = HWC_BLENDING_NONE;
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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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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 (!isOpaque()) {
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hwcl->blending = mPremultipliedAlpha ?
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HWC_BLENDING_PREMULT : HWC_BLENDING_COVERAGE;
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}
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// scaling is already applied in mTransformedBounds
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hwcl->displayFrame.left = mTransformedBounds.left;
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hwcl->displayFrame.top = mTransformedBounds.top;
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hwcl->displayFrame.right = mTransformedBounds.right;
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hwcl->displayFrame.bottom = mTransformedBounds.bottom;
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hwcl->visibleRegionScreen.rects =
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reinterpret_cast<hwc_rect_t const *>(
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visibleRegionScreen.getArray(
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&hwcl->visibleRegionScreen.numRects));
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}
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void LayerBase::setPerFrameData(hwc_layer_t* hwcl) {
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hwcl->compositionType = HWC_FRAMEBUFFER;
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hwcl->handle = NULL;
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hwcl->sourceCrop.left = 0;
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hwcl->sourceCrop.top = 0;
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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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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 Region& clip) const
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{
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// reset GL state
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glEnable(GL_SCISSOR_TEST);
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onDraw(clip);
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}
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void LayerBase::drawForSreenShot()
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{
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const DisplayHardware& hw(graphicPlane(0).displayHardware());
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setFiltering(true);
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onDraw( Region(hw.bounds()) );
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setFiltering(false);
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}
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void LayerBase::clearWithOpenGL(const Region& clip, GLclampf red,
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GLclampf green, GLclampf blue,
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GLclampf alpha) const
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{
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const DisplayHardware& hw(graphicPlane(0).displayHardware());
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const uint32_t fbHeight = hw.getHeight();
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glColor4f(red,green,blue,alpha);
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#if defined(GL_OES_EGL_image_external)
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if (GLExtensions::getInstance().haveTextureExternal()) {
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glDisable(GL_TEXTURE_EXTERNAL_OES);
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}
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#endif
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glDisable(GL_TEXTURE_2D);
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glDisable(GL_BLEND);
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glDisable(GL_DITHER);
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Region::const_iterator it = clip.begin();
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Region::const_iterator const end = clip.end();
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glEnable(GL_SCISSOR_TEST);
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glVertexPointer(2, GL_FLOAT, 0, mVertices);
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while (it != end) {
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const Rect& r = *it++;
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const GLint sy = fbHeight - (r.top + r.height());
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glScissor(r.left, sy, r.width(), r.height());
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glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
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}
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}
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void LayerBase::clearWithOpenGL(const Region& clip) const
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{
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clearWithOpenGL(clip,0,0,0,0);
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}
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void LayerBase::drawWithOpenGL(const Region& clip) const
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{
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const DisplayHardware& hw(graphicPlane(0).displayHardware());
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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 (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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struct TexCoords {
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GLfloat u;
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GLfloat v;
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};
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TexCoords texCoords[4];
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texCoords[0].u = 0;
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texCoords[0].v = 1;
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texCoords[1].u = 0;
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texCoords[1].v = 0;
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texCoords[2].u = 1;
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texCoords[2].v = 0;
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texCoords[3].u = 1;
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texCoords[3].v = 1;
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if (needsDithering()) {
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glEnable(GL_DITHER);
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} else {
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glDisable(GL_DITHER);
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}
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glVertexPointer(2, GL_FLOAT, 0, mVertices);
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glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
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Region::const_iterator it = clip.begin();
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Region::const_iterator const end = clip.end();
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while (it != end) {
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const Rect& r = *it++;
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const GLint sy = fbHeight - (r.top + r.height());
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glScissor(r.left, sy, r.width(), r.height());
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glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
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}
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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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\n"
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" "
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"z=%9d, pos=(%g,%g), size=(%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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getTypeId(), this, s.z, s.transform.tx(), s.transform.ty(), s.w, s.h,
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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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{
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LayerBase::dump(result, scratch, size);
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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, DisplayID display,
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const sp<Client>& client)
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: LayerBase(flinger, display),
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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,
|
|
const sp<LayerBaseClient>& layer)
|
|
: LayerCleaner(flinger, layer) { }
|
|
};
|
|
sp<ISurface> sur(new BSurface(mFlinger, this));
|
|
return sur;
|
|
}
|
|
|
|
sp<ISurface> LayerBaseClient::getSurface()
|
|
{
|
|
sp<ISurface> s;
|
|
Mutex::Autolock _l(mLock);
|
|
|
|
LOG_ALWAYS_FATAL_IF(mHasSurface,
|
|
"LayerBaseClient::getSurface() has already been called");
|
|
|
|
mHasSurface = true;
|
|
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,
|
|
" name=%s\n"
|
|
" client=%p, identity=%u\n",
|
|
getName().string(),
|
|
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->destroySurface(mLayer);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
}; // namespace android
|