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gerrit-public.fairphone.software / platform / frameworks / base / 33a78149e00806d055ff214d300279963965a677 / . / services / surfaceflinger / SurfaceFlinger.cpp
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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <math.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <cutils/log.h>
#include <cutils/properties.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <binder/MemoryHeapBase.h>
#include <utils/String8.h>
#include <utils/String16.h>
#include <utils/StopWatch.h>
#include <ui/GraphicBufferAllocator.h>
#include <ui/PixelFormat.h>
#include <pixelflinger/pixelflinger.h>
#include <GLES/gl.h>
#include "clz.h"
#include "GLExtensions.h"
#include "Layer.h"
#include "LayerBlur.h"
#include "LayerBuffer.h"
#include "LayerDim.h"
#include "SurfaceFlinger.h"
#include "DisplayHardware/DisplayHardware.h"
#include "DisplayHardware/HWComposer.h"
/* ideally AID_GRAPHICS would be in a semi-public header
* or there would be a way to map a user/group name to its id
*/
#ifndef AID_GRAPHICS
#define AID_GRAPHICS 1003
#endif
#define DISPLAY_COUNT 1
namespace android {
// ---------------------------------------------------------------------------
SurfaceFlinger::SurfaceFlinger()
: BnSurfaceComposer(), Thread(false),
mTransactionFlags(0),
mTransactionCount(0),
mResizeTransationPending(false),
mLayersRemoved(false),
mBootTime(systemTime()),
mHardwareTest("android.permission.HARDWARE_TEST"),
mAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"),
mDump("android.permission.DUMP"),
mVisibleRegionsDirty(false),
mHwWorkListDirty(false),
mDeferReleaseConsole(false),
mFreezeDisplay(false),
mFreezeCount(0),
mFreezeDisplayTime(0),
mDebugRegion(0),
mDebugBackground(0),
mDebugInSwapBuffers(0),
mLastSwapBufferTime(0),
mDebugInTransaction(0),
mLastTransactionTime(0),
mBootFinished(false),
mConsoleSignals(0),
mSecureFrameBuffer(0)
{
init();
}
void SurfaceFlinger::init()
{
LOGI("SurfaceFlinger is starting");
// debugging stuff...
char value[PROPERTY_VALUE_MAX];
property_get("debug.sf.showupdates", value, "0");
mDebugRegion = atoi(value);
property_get("debug.sf.showbackground", value, "0");
mDebugBackground = atoi(value);
LOGI_IF(mDebugRegion, "showupdates enabled");
LOGI_IF(mDebugBackground, "showbackground enabled");
}
SurfaceFlinger::~SurfaceFlinger()
{
glDeleteTextures(1, &mWormholeTexName);
}
overlay_control_device_t* SurfaceFlinger::getOverlayEngine() const
{
return graphicPlane(0).displayHardware().getOverlayEngine();
}
sp<IMemoryHeap> SurfaceFlinger::getCblk() const
{
return mServerHeap;
}
sp<ISurfaceComposerClient> SurfaceFlinger::createConnection()
{
sp<ISurfaceComposerClient> bclient;
sp<Client> client(new Client(this));
status_t err = client->initCheck();
if (err == NO_ERROR) {
bclient = client;
}
return bclient;
}
sp<ISurfaceComposerClient> SurfaceFlinger::createClientConnection()
{
sp<ISurfaceComposerClient> bclient;
sp<UserClient> client(new UserClient(this));
status_t err = client->initCheck();
if (err == NO_ERROR) {
bclient = client;
}
return bclient;
}
const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const
{
LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy);
const GraphicPlane& plane(mGraphicPlanes[dpy]);
return plane;
}
GraphicPlane& SurfaceFlinger::graphicPlane(int dpy)
{
return const_cast<GraphicPlane&>(
const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy));
}
void SurfaceFlinger::bootFinished()
{
const nsecs_t now = systemTime();
const nsecs_t duration = now - mBootTime;
LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) );
mBootFinished = true;
property_set("ctl.stop", "bootanim");
}
void SurfaceFlinger::onFirstRef()
{
run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY);
// Wait for the main thread to be done with its initialization
mReadyToRunBarrier.wait();
}
static inline uint16_t pack565(int r, int g, int b) {
return (r<<11)|(g<<5)|b;
}
status_t SurfaceFlinger::readyToRun()
{
LOGI( "SurfaceFlinger's main thread ready to run. "
"Initializing graphics H/W...");
// we only support one display currently
int dpy = 0;
{
// initialize the main display
GraphicPlane& plane(graphicPlane(dpy));
DisplayHardware* const hw = new DisplayHardware(this, dpy);
plane.setDisplayHardware(hw);
}
// create the shared control-block
mServerHeap = new MemoryHeapBase(4096,
MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap");
LOGE_IF(mServerHeap==0, "can't create shared memory dealer");
mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase());
LOGE_IF(mServerCblk==0, "can't get to shared control block's address");
new(mServerCblk) surface_flinger_cblk_t;
// initialize primary screen
// (other display should be initialized in the same manner, but
// asynchronously, as they could come and go. None of this is supported
// yet).
const GraphicPlane& plane(graphicPlane(dpy));
const DisplayHardware& hw = plane.displayHardware();
const uint32_t w = hw.getWidth();
const uint32_t h = hw.getHeight();
const uint32_t f = hw.getFormat();
hw.makeCurrent();
// initialize the shared control block
mServerCblk->connected |= 1<<dpy;
display_cblk_t* dcblk = mServerCblk->displays + dpy;
memset(dcblk, 0, sizeof(display_cblk_t));
dcblk->w = plane.getWidth();
dcblk->h = plane.getHeight();
dcblk->format = f;
dcblk->orientation = ISurfaceComposer::eOrientationDefault;
dcblk->xdpi = hw.getDpiX();
dcblk->ydpi = hw.getDpiY();
dcblk->fps = hw.getRefreshRate();
dcblk->density = hw.getDensity();
// Initialize OpenGL|ES
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glPixelStorei(GL_PACK_ALIGNMENT, 4);
glEnableClientState(GL_VERTEX_ARRAY);
glEnable(GL_SCISSOR_TEST);
glShadeModel(GL_FLAT);
glDisable(GL_DITHER);
glDisable(GL_CULL_FACE);
const uint16_t g0 = pack565(0x0F,0x1F,0x0F);
const uint16_t g1 = pack565(0x17,0x2f,0x17);
const uint16_t textureData[4] = { g0, g1, g1, g0 };
glGenTextures(1, &mWormholeTexName);
glBindTexture(GL_TEXTURE_2D, mWormholeTexName);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0,
GL_RGB, GL_UNSIGNED_SHORT_5_6_5, textureData);
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrthof(0, w, h, 0, 0, 1);
LayerDim::initDimmer(this, w, h);
mReadyToRunBarrier.open();
/*
* We're now ready to accept clients...
*/
// start boot animation
property_set("ctl.start", "bootanim");
return NO_ERROR;
}
// ----------------------------------------------------------------------------
#if 0
#pragma mark -
#pragma mark Events Handler
#endif
void SurfaceFlinger::waitForEvent()
{
while (true) {
nsecs_t timeout = -1;
const nsecs_t freezeDisplayTimeout = ms2ns(5000);
if (UNLIKELY(isFrozen())) {
// wait 5 seconds
const nsecs_t now = systemTime();
if (mFreezeDisplayTime == 0) {
mFreezeDisplayTime = now;
}
nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime);
timeout = waitTime>0 ? waitTime : 0;
}
sp<MessageBase> msg = mEventQueue.waitMessage(timeout);
// see if we timed out
if (isFrozen()) {
const nsecs_t now = systemTime();
nsecs_t frozenTime = (now - mFreezeDisplayTime);
if (frozenTime >= freezeDisplayTimeout) {
// we timed out and are still frozen
LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d",
mFreezeDisplay, mFreezeCount);
mFreezeDisplayTime = 0;
mFreezeCount = 0;
mFreezeDisplay = false;
}
}
if (msg != 0) {
switch (msg->what) {
case MessageQueue::INVALIDATE:
// invalidate message, just return to the main loop
return;
}
}
}
}
void SurfaceFlinger::signalEvent() {
mEventQueue.invalidate();
}
void SurfaceFlinger::signal() const {
// this is the IPC call
const_cast<SurfaceFlinger*>(this)->signalEvent();
}
status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg,
nsecs_t reltime, uint32_t flags)
{
return mEventQueue.postMessage(msg, reltime, flags);
}
status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg,
nsecs_t reltime, uint32_t flags)
{
status_t res = mEventQueue.postMessage(msg, reltime, flags);
if (res == NO_ERROR) {
msg->wait();
}
return res;
}
// ----------------------------------------------------------------------------
#if 0
#pragma mark -
#pragma mark Main loop
#endif
bool SurfaceFlinger::threadLoop()
{
waitForEvent();
// check for transactions
if (UNLIKELY(mConsoleSignals)) {
handleConsoleEvents();
}
if (LIKELY(mTransactionCount == 0)) {
// if we're in a global transaction, don't do anything.
const uint32_t mask = eTransactionNeeded | eTraversalNeeded;
uint32_t transactionFlags = getTransactionFlags(mask);
if (LIKELY(transactionFlags)) {
handleTransaction(transactionFlags);
}
}
// post surfaces (if needed)
handlePageFlip();
if (UNLIKELY(mHwWorkListDirty)) {
// build the h/w work list
handleWorkList();
}
const DisplayHardware& hw(graphicPlane(0).displayHardware());
if (LIKELY(hw.canDraw() && !isFrozen())) {
// repaint the framebuffer (if needed)
handleRepaint();
// inform the h/w that we're done compositing
hw.compositionComplete();
// release the clients before we flip ('cause flip might block)
unlockClients();
postFramebuffer();
} else {
// pretend we did the post
unlockClients();
usleep(16667); // 60 fps period
}
return true;
}
void SurfaceFlinger::postFramebuffer()
{
if (!mInvalidRegion.isEmpty()) {
const DisplayHardware& hw(graphicPlane(0).displayHardware());
const nsecs_t now = systemTime();
mDebugInSwapBuffers = now;
hw.flip(mInvalidRegion);
mLastSwapBufferTime = systemTime() - now;
mDebugInSwapBuffers = 0;
mInvalidRegion.clear();
}
}
void SurfaceFlinger::handleConsoleEvents()
{
// something to do with the console
const DisplayHardware& hw = graphicPlane(0).displayHardware();
int what = android_atomic_and(0, &mConsoleSignals);
if (what & eConsoleAcquired) {
hw.acquireScreen();
}
if (mDeferReleaseConsole && hw.canDraw()) {
// We got the release signal before the acquire signal
mDeferReleaseConsole = false;
hw.releaseScreen();
}
if (what & eConsoleReleased) {
if (hw.canDraw()) {
hw.releaseScreen();
} else {
mDeferReleaseConsole = true;
}
}
mDirtyRegion.set(hw.bounds());
}
void SurfaceFlinger::handleTransaction(uint32_t transactionFlags)
{
Vector< sp<LayerBase> > ditchedLayers;
/*
* Perform and commit the transaction
*/
{ // scope for the lock
Mutex::Autolock _l(mStateLock);
const nsecs_t now = systemTime();
mDebugInTransaction = now;
handleTransactionLocked(transactionFlags, ditchedLayers);
mLastTransactionTime = systemTime() - now;
mDebugInTransaction = 0;
mHwWorkListDirty = true;
// here the transaction has been committed
}
/*
* Clean-up all layers that went away
* (do this without the lock held)
*/
const size_t count = ditchedLayers.size();
for (size_t i=0 ; i<count ; i++) {
if (ditchedLayers[i] != 0) {
//LOGD("ditching layer %p", ditchedLayers[i].get());
ditchedLayers[i]->ditch();
}
}
}
void SurfaceFlinger::handleTransactionLocked(
uint32_t transactionFlags, Vector< sp<LayerBase> >& ditchedLayers)
{
const LayerVector& currentLayers(mCurrentState.layersSortedByZ);
const size_t count = currentLayers.size();
/*
* Traversal of the children
* (perform the transaction for each of them if needed)
*/
const bool layersNeedTransaction = transactionFlags & eTraversalNeeded;
if (layersNeedTransaction) {
for (size_t i=0 ; i<count ; i++) {
const sp<LayerBase>& layer = currentLayers[i];
uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded);
if (!trFlags) continue;
const uint32_t flags = layer->doTransaction(0);
if (flags & Layer::eVisibleRegion)
mVisibleRegionsDirty = true;
}
}
/*
* Perform our own transaction if needed
*/
if (transactionFlags & eTransactionNeeded) {
if (mCurrentState.orientation != mDrawingState.orientation) {
// the orientation has changed, recompute all visible regions
// and invalidate everything.
const int dpy = 0;
const int orientation = mCurrentState.orientation;
const uint32_t type = mCurrentState.orientationType;
GraphicPlane& plane(graphicPlane(dpy));
plane.setOrientation(orientation);
// update the shared control block
const DisplayHardware& hw(plane.displayHardware());
volatile display_cblk_t* dcblk = mServerCblk->displays + dpy;
dcblk->orientation = orientation;
dcblk->w = plane.getWidth();
dcblk->h = plane.getHeight();
mVisibleRegionsDirty = true;
mDirtyRegion.set(hw.bounds());
}
if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) {
// freezing or unfreezing the display -> trigger animation if needed
mFreezeDisplay = mCurrentState.freezeDisplay;
if (mFreezeDisplay)
mFreezeDisplayTime = 0;
}
if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) {
// layers have been added
mVisibleRegionsDirty = true;
}
// some layers might have been removed, so
// we need to update the regions they're exposing.
if (mLayersRemoved) {
mLayersRemoved = false;
mVisibleRegionsDirty = true;
const LayerVector& previousLayers(mDrawingState.layersSortedByZ);
const size_t count = previousLayers.size();
for (size_t i=0 ; i<count ; i++) {
const sp<LayerBase>& layer(previousLayers[i]);
if (currentLayers.indexOf( layer ) < 0) {
// this layer is not visible anymore
ditchedLayers.add(layer);
mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen);
}
}
}
}
commitTransaction();
}
sp<FreezeLock> SurfaceFlinger::getFreezeLock() const
{
return new FreezeLock(const_cast<SurfaceFlinger *>(this));
}
void SurfaceFlinger::computeVisibleRegions(
LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion)
{
const GraphicPlane& plane(graphicPlane(0));
const Transform& planeTransform(plane.transform());
const DisplayHardware& hw(plane.displayHardware());
const Region screenRegion(hw.bounds());
Region aboveOpaqueLayers;
Region aboveCoveredLayers;
Region dirty;
bool secureFrameBuffer = false;
size_t i = currentLayers.size();
while (i--) {
const sp<LayerBase>& layer = currentLayers[i];
layer->validateVisibility(planeTransform);
// start with the whole surface at its current location
const Layer::State& s(layer->drawingState());
/*
* opaqueRegion: area of a surface that is fully opaque.
*/
Region opaqueRegion;
/*
* visibleRegion: area of a surface that is visible on screen
* and not fully transparent. This is essentially the layer's
* footprint minus the opaque regions above it.
* Areas covered by a translucent surface are considered visible.
*/
Region visibleRegion;
/*
* coveredRegion: area of a surface that is covered by all
* visible regions above it (which includes the translucent areas).
*/
Region coveredRegion;
// handle hidden surfaces by setting the visible region to empty
if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) {
const bool translucent = layer->needsBlending();
const Rect bounds(layer->visibleBounds());
visibleRegion.set(bounds);
visibleRegion.andSelf(screenRegion);
if (!visibleRegion.isEmpty()) {
// Remove the transparent area from the visible region
if (translucent) {
visibleRegion.subtractSelf(layer->transparentRegionScreen);
}
// compute the opaque region
const int32_t layerOrientation = layer->getOrientation();
if (s.alpha==255 && !translucent &&
((layerOrientation & Transform::ROT_INVALID) == false)) {
// the opaque region is the layer's footprint
opaqueRegion = visibleRegion;
}
}
}
// Clip the covered region to the visible region
coveredRegion = aboveCoveredLayers.intersect(visibleRegion);
// Update aboveCoveredLayers for next (lower) layer
aboveCoveredLayers.orSelf(visibleRegion);
// subtract the opaque region covered by the layers above us
visibleRegion.subtractSelf(aboveOpaqueLayers);
// compute this layer's dirty region
if (layer->contentDirty) {
// we need to invalidate the whole region
dirty = visibleRegion;
// as well, as the old visible region
dirty.orSelf(layer->visibleRegionScreen);
layer->contentDirty = false;
} else {
/* compute the exposed region:
* the exposed region consists of two components:
* 1) what's VISIBLE now and was COVERED before
* 2) what's EXPOSED now less what was EXPOSED before
*
* note that (1) is conservative, we start with the whole
* visible region but only keep what used to be covered by
* something -- which mean it may have been exposed.
*
* (2) handles areas that were not covered by anything but got
* exposed because of a resize.
*/
const Region newExposed = visibleRegion - coveredRegion;
const Region oldVisibleRegion = layer->visibleRegionScreen;
const Region oldCoveredRegion = layer->coveredRegionScreen;
const Region oldExposed = oldVisibleRegion - oldCoveredRegion;
dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed);
}
dirty.subtractSelf(aboveOpaqueLayers);
// accumulate to the screen dirty region
dirtyRegion.orSelf(dirty);
// Update aboveOpaqueLayers for next (lower) layer
aboveOpaqueLayers.orSelf(opaqueRegion);
// Store the visible region is screen space
layer->setVisibleRegion(visibleRegion);
layer->setCoveredRegion(coveredRegion);
// If a secure layer is partially visible, lock-down the screen!
if (layer->isSecure() && !visibleRegion.isEmpty()) {
secureFrameBuffer = true;
}
}
// invalidate the areas where a layer was removed
dirtyRegion.orSelf(mDirtyRegionRemovedLayer);
mDirtyRegionRemovedLayer.clear();
mSecureFrameBuffer = secureFrameBuffer;
opaqueRegion = aboveOpaqueLayers;
}
void SurfaceFlinger::commitTransaction()
{
mDrawingState = mCurrentState;
mResizeTransationPending = false;
mTransactionCV.broadcast();
}
void SurfaceFlinger::handlePageFlip()
{
bool visibleRegions = mVisibleRegionsDirty;
LayerVector& currentLayers(
const_cast<LayerVector&>(mDrawingState.layersSortedByZ));
visibleRegions |= lockPageFlip(currentLayers);
const DisplayHardware& hw = graphicPlane(0).displayHardware();
const Region screenRegion(hw.bounds());
if (visibleRegions) {
Region opaqueRegion;
computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion);
/*
* rebuild the visible layer list
*/
mVisibleLayersSortedByZ.clear();
const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
size_t count = currentLayers.size();
mVisibleLayersSortedByZ.setCapacity(count);
for (size_t i=0 ; i<count ; i++) {
if (!currentLayers[i]->visibleRegionScreen.isEmpty())
mVisibleLayersSortedByZ.add(currentLayers[i]);
}
mWormholeRegion = screenRegion.subtract(opaqueRegion);
mVisibleRegionsDirty = false;
mHwWorkListDirty = true;
}
unlockPageFlip(currentLayers);
mDirtyRegion.andSelf(screenRegion);
}
bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers)
{
bool recomputeVisibleRegions = false;
size_t count = currentLayers.size();
sp<LayerBase> const* layers = currentLayers.array();
for (size_t i=0 ; i<count ; i++) {
const sp<LayerBase>& layer(layers[i]);
layer->lockPageFlip(recomputeVisibleRegions);
}
return recomputeVisibleRegions;
}
void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers)
{
const GraphicPlane& plane(graphicPlane(0));
const Transform& planeTransform(plane.transform());
size_t count = currentLayers.size();
sp<LayerBase> const* layers = currentLayers.array();
for (size_t i=0 ; i<count ; i++) {
const sp<LayerBase>& layer(layers[i]);
layer->unlockPageFlip(planeTransform, mDirtyRegion);
}
}
void SurfaceFlinger::handleWorkList()
{
mHwWorkListDirty = false;
HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer());
if (hwc.initCheck() == NO_ERROR) {
const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ);
const size_t count = currentLayers.size();
hwc.createWorkList(count);
hwc_layer_t* const cur(hwc.getLayers());
for (size_t i=0 ; cur && i<count ; i++) {
currentLayers[i]->setGeometry(&cur[i]);
}
}
}
void SurfaceFlinger::handleRepaint()
{
// compute the invalid region
mInvalidRegion.orSelf(mDirtyRegion);
if (mInvalidRegion.isEmpty()) {
// nothing to do
return;
}
if (UNLIKELY(mDebugRegion)) {
debugFlashRegions();
}
// set the frame buffer
const DisplayHardware& hw(graphicPlane(0).displayHardware());
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
uint32_t flags = hw.getFlags();
if ((flags & DisplayHardware::SWAP_RECTANGLE) ||
(flags & DisplayHardware::BUFFER_PRESERVED))
{
// we can redraw only what's dirty, but since SWAP_RECTANGLE only
// takes a rectangle, we must make sure to update that whole
// rectangle in that case
if (flags & DisplayHardware::SWAP_RECTANGLE) {
// TODO: we really should be able to pass a region to
// SWAP_RECTANGLE so that we don't have to redraw all this.
mDirtyRegion.set(mInvalidRegion.bounds());
} else {
// in the BUFFER_PRESERVED case, obviously, we can update only
// what's needed and nothing more.
// NOTE: this is NOT a common case, as preserving the backbuffer
// is costly and usually involves copying the whole update back.
}
} else {
if (flags & DisplayHardware::PARTIAL_UPDATES) {
// We need to redraw the rectangle that will be updated
// (pushed to the framebuffer).
// This is needed because PARTIAL_UPDATES only takes one
// rectangle instead of a region (see DisplayHardware::flip())
mDirtyRegion.set(mInvalidRegion.bounds());
} else {
// we need to redraw everything (the whole screen)
mDirtyRegion.set(hw.bounds());
mInvalidRegion = mDirtyRegion;
}
}
// compose all surfaces
composeSurfaces(mDirtyRegion);
// clear the dirty regions
mDirtyRegion.clear();
}
void SurfaceFlinger::composeSurfaces(const Region& dirty)
{
if (UNLIKELY(!mWormholeRegion.isEmpty())) {
// should never happen unless the window manager has a bug
// draw something...
drawWormhole();
}
status_t err = NO_ERROR;
const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ);
size_t count = layers.size();
const DisplayHardware& hw(graphicPlane(0).displayHardware());
HWComposer& hwc(hw.getHwComposer());
hwc_layer_t* const cur(hwc.getLayers());
LOGE_IF(cur && hwc.getNumLayers() != count,
"HAL number of layers (%d) doesn't match surfaceflinger (%d)",
hwc.getNumLayers(), count);
// just to be extra-safe, use the smallest count
if (hwc.initCheck() == NO_ERROR) {
count = count < hwc.getNumLayers() ? count : hwc.getNumLayers();
}
/*
* update the per-frame h/w composer data for each layer
* and build the transparent region of the FB
*/
Region transparent;
if (cur) {
for (size_t i=0 ; i<count ; i++) {
const sp<LayerBase>& layer(layers[i]);
layer->setPerFrameData(&cur[i]);
if (cur[i].hints & HWC_HINT_CLEAR_FB) {
if (!(layer->needsBlending())) {
transparent.orSelf(layer->visibleRegionScreen);
}
}
}
err = hwc.prepare();
LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err));
}
/*
* clear the area of the FB that need to be transparent
*/
transparent.andSelf(dirty);
if (!transparent.isEmpty()) {
glClearColor(0,0,0,0);
Region::const_iterator it = transparent.begin();
Region::const_iterator const end = transparent.end();
const int32_t height = hw.getHeight();
while (it != end) {
const Rect& r(*it++);
const GLint sy = height - (r.top + r.height());
glScissor(r.left, sy, r.width(), r.height());
glClear(GL_COLOR_BUFFER_BIT);
}
}
/*
* and then, render the layers targeted at the framebuffer
*/
for (size_t i=0 ; i<count ; i++) {
if (cur) {
if (!(cur[i].compositionType == HWC_FRAMEBUFFER) ||
cur[i].flags & HWC_SKIP_LAYER) {
// skip layers handled by the HAL
continue;
}
}
const sp<LayerBase>& layer(layers[i]);
const Region clip(dirty.intersect(layer->visibleRegionScreen));
if (!clip.isEmpty()) {
layer->draw(clip);
}
}
}
void SurfaceFlinger::unlockClients()
{
const LayerVector& drawingLayers(mDrawingState.layersSortedByZ);
const size_t count = drawingLayers.size();
sp<LayerBase> const* const layers = drawingLayers.array();
for (size_t i=0 ; i<count ; ++i) {
const sp<LayerBase>& layer = layers[i];
layer->finishPageFlip();
}
}
void SurfaceFlinger::debugFlashRegions()
{
const DisplayHardware& hw(graphicPlane(0).displayHardware());
const uint32_t flags = hw.getFlags();
if (!((flags & DisplayHardware::SWAP_RECTANGLE) ||
(flags & DisplayHardware::BUFFER_PRESERVED))) {
const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ?
mDirtyRegion.bounds() : hw.bounds());
composeSurfaces(repaint);
}
TextureManager::deactivateTextures();
glDisable(GL_BLEND);
glDisable(GL_DITHER);
glDisable(GL_SCISSOR_TEST);
static int toggle = 0;
toggle = 1 - toggle;
if (toggle) {
glColor4f(1, 0, 1, 1);
} else {
glColor4f(1, 1, 0, 1);
}
Region::const_iterator it = mDirtyRegion.begin();
Region::const_iterator const end = mDirtyRegion.end();
while (it != end) {
const Rect& r = *it++;
GLfloat vertices[][2] = {
{ r.left, r.top },
{ r.left, r.bottom },
{ r.right, r.bottom },
{ r.right, r.top }
};
glVertexPointer(2, GL_FLOAT, 0, vertices);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
if (mInvalidRegion.isEmpty()) {
mDirtyRegion.dump("mDirtyRegion");
mInvalidRegion.dump("mInvalidRegion");
}
hw.flip(mInvalidRegion);
if (mDebugRegion > 1)
usleep(mDebugRegion * 1000);
glEnable(GL_SCISSOR_TEST);
//mDirtyRegion.dump("mDirtyRegion");
}
void SurfaceFlinger::drawWormhole() const
{
const Region region(mWormholeRegion.intersect(mDirtyRegion));
if (region.isEmpty())
return;
const DisplayHardware& hw(graphicPlane(0).displayHardware());
const int32_t width = hw.getWidth();
const int32_t height = hw.getHeight();
glDisable(GL_BLEND);
glDisable(GL_DITHER);
if (LIKELY(!mDebugBackground)) {
glClearColor(0,0,0,0);
Region::const_iterator it = region.begin();
Region::const_iterator const end = region.end();
while (it != end) {
const Rect& r = *it++;
const GLint sy = height - (r.top + r.height());
glScissor(r.left, sy, r.width(), r.height());
glClear(GL_COLOR_BUFFER_BIT);
}
} else {
const GLshort vertices[][2] = { { 0, 0 }, { width, 0 },
{ width, height }, { 0, height } };
const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } };
glVertexPointer(2, GL_SHORT, 0, vertices);
glTexCoordPointer(2, GL_SHORT, 0, tcoords);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
#if defined(GL_OES_texture_external)
if (GLExtensions::getInstance().haveTextureExternal()) {
glDisable(GL_TEXTURE_EXTERNAL_OES);
}
#endif
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, mWormholeTexName);
glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1);
Region::const_iterator it = region.begin();
Region::const_iterator const end = region.end();
while (it != end) {
const Rect& r = *it++;
const GLint sy = height - (r.top + r.height());
glScissor(r.left, sy, r.width(), r.height());
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
}
void SurfaceFlinger::debugShowFPS() const
{
static int mFrameCount;
static int mLastFrameCount = 0;
static nsecs_t mLastFpsTime = 0;
static float mFps = 0;
mFrameCount++;
nsecs_t now = systemTime();
nsecs_t diff = now - mLastFpsTime;
if (diff > ms2ns(250)) {
mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff;
mLastFpsTime = now;
mLastFrameCount = mFrameCount;
}
// XXX: mFPS has the value we want
}
status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer)
{
Mutex::Autolock _l(mStateLock);
addLayer_l(layer);
setTransactionFlags(eTransactionNeeded|eTraversalNeeded);
return NO_ERROR;
}
status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer)
{
ssize_t i = mCurrentState.layersSortedByZ.add(layer);
return (i < 0) ? status_t(i) : status_t(NO_ERROR);
}
ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client,
const sp<LayerBaseClient>& lbc)
{
Mutex::Autolock _l(mStateLock);
// attach this layer to the client
ssize_t name = client->attachLayer(lbc);
// add this layer to the current state list
addLayer_l(lbc);
return name;
}
status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer)
{
Mutex::Autolock _l(mStateLock);
status_t err = purgatorizeLayer_l(layer);
if (err == NO_ERROR)
setTransactionFlags(eTransactionNeeded);
return err;
}
status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase)
{
sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient());
if (lbc != 0) {
mLayerMap.removeItem( lbc->getSurface()->asBinder() );
}
ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase);
if (index >= 0) {
mLayersRemoved = true;
return NO_ERROR;
}
return status_t(index);
}
status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase)
{
// remove the layer from the main list (through a transaction).
ssize_t err = removeLayer_l(layerBase);
layerBase->onRemoved();
// it's possible that we don't find a layer, because it might
// have been destroyed already -- this is not technically an error
// from the user because there is a race between Client::destroySurface(),
// ~Client() and ~ISurface().
return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err;
}
status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer)
{
layer->forceVisibilityTransaction();
setTransactionFlags(eTraversalNeeded);
return NO_ERROR;
}
uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags)
{
return android_atomic_and(~flags, &mTransactionFlags) & flags;
}
uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags)
{
uint32_t old = android_atomic_or(flags, &mTransactionFlags);
if ((old & flags)==0) { // wake the server up
signalEvent();
}
return old;
}
void SurfaceFlinger::openGlobalTransaction()
{
android_atomic_inc(&mTransactionCount);
}
void SurfaceFlinger::closeGlobalTransaction()
{
if (android_atomic_dec(&mTransactionCount) == 1) {
signalEvent();
// if there is a transaction with a resize, wait for it to
// take effect before returning.
Mutex::Autolock _l(mStateLock);
while (mResizeTransationPending) {
status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5));
if (CC_UNLIKELY(err != NO_ERROR)) {
// just in case something goes wrong in SF, return to the
// called after a few seconds.
LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!");
mResizeTransationPending = false;
break;
}
}
}
}
status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags)
{
if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
return BAD_VALUE;
Mutex::Autolock _l(mStateLock);
mCurrentState.freezeDisplay = 1;
setTransactionFlags(eTransactionNeeded);
// flags is intended to communicate some sort of animation behavior
// (for instance fading)
return NO_ERROR;
}
status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags)
{
if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
return BAD_VALUE;
Mutex::Autolock _l(mStateLock);
mCurrentState.freezeDisplay = 0;
setTransactionFlags(eTransactionNeeded);
// flags is intended to communicate some sort of animation behavior
// (for instance fading)
return NO_ERROR;
}
int SurfaceFlinger::setOrientation(DisplayID dpy,
int orientation, uint32_t flags)
{
if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
return BAD_VALUE;
Mutex::Autolock _l(mStateLock);
if (mCurrentState.orientation != orientation) {
if (uint32_t(orientation)<=eOrientation270 || orientation==42) {
mCurrentState.orientationType = flags;
mCurrentState.orientation = orientation;
setTransactionFlags(eTransactionNeeded);
mTransactionCV.wait(mStateLock);
} else {
orientation = BAD_VALUE;
}
}
return orientation;
}
sp<ISurface> SurfaceFlinger::createSurface(const sp<Client>& client, int pid,
const String8& name, ISurfaceComposerClient::surface_data_t* params,
DisplayID d, uint32_t w, uint32_t h, PixelFormat format,
uint32_t flags)
{
sp<LayerBaseClient> layer;
sp<LayerBaseClient::Surface> surfaceHandle;
if (int32_t(w|h) < 0) {
LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)",
int(w), int(h));
return surfaceHandle;
}
//LOGD("createSurface for pid %d (%d x %d)", pid, w, h);
sp<Layer> normalLayer;
switch (flags & eFXSurfaceMask) {
case eFXSurfaceNormal:
#if HAS_PUSH_BUFFERS
if (UNLIKELY(flags & ePushBuffers)) {
layer = createPushBuffersSurface(client, d, w, h, flags);
} else
#endif
{
normalLayer = createNormalSurface(client, d, w, h, flags, format);
layer = normalLayer;
}
break;
case eFXSurfaceBlur:
layer = createBlurSurface(client, d, w, h, flags);
break;
case eFXSurfaceDim:
layer = createDimSurface(client, d, w, h, flags);
break;
}
if (layer != 0) {
layer->initStates(w, h, flags);
layer->setName(name);
ssize_t token = addClientLayer(client, layer);
surfaceHandle = layer->getSurface();
if (surfaceHandle != 0) {
params->token = token;
params->identity = surfaceHandle->getIdentity();
params->width = w;
params->height = h;
params->format = format;
if (normalLayer != 0) {
Mutex::Autolock _l(mStateLock);
mLayerMap.add(surfaceHandle->asBinder(), normalLayer);
}
}
setTransactionFlags(eTransactionNeeded);
}
return surfaceHandle;
}
sp<Layer> SurfaceFlinger::createNormalSurface(
const sp<Client>& client, DisplayID display,
uint32_t w, uint32_t h, uint32_t flags,
PixelFormat& format)
{
// initialize the surfaces
switch (format) { // TODO: take h/w into account
case PIXEL_FORMAT_TRANSPARENT:
case PIXEL_FORMAT_TRANSLUCENT:
format = PIXEL_FORMAT_RGBA_8888;
break;
case PIXEL_FORMAT_OPAQUE:
#ifdef NO_RGBX_8888
format = PIXEL_FORMAT_RGB_565;
#else
format = PIXEL_FORMAT_RGBX_8888;
#endif
break;
}
#ifdef NO_RGBX_8888
if (format == PIXEL_FORMAT_RGBX_8888)
format = PIXEL_FORMAT_RGBA_8888;
#endif
sp<Layer> layer = new Layer(this, display, client);
status_t err = layer->setBuffers(w, h, format, flags);
if (LIKELY(err != NO_ERROR)) {
LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err));
layer.clear();
}
return layer;
}
sp<LayerBlur> SurfaceFlinger::createBlurSurface(
const sp<Client>& client, DisplayID display,
uint32_t w, uint32_t h, uint32_t flags)
{
sp<LayerBlur> layer = new LayerBlur(this, display, client);
layer->initStates(w, h, flags);
return layer;
}
sp<LayerDim> SurfaceFlinger::createDimSurface(
const sp<Client>& client, DisplayID display,
uint32_t w, uint32_t h, uint32_t flags)
{
sp<LayerDim> layer = new LayerDim(this, display, client);
layer->initStates(w, h, flags);
return layer;
}
sp<LayerBuffer> SurfaceFlinger::createPushBuffersSurface(
const sp<Client>& client, DisplayID display,
uint32_t w, uint32_t h, uint32_t flags)
{
sp<LayerBuffer> layer = new LayerBuffer(this, display, client);
layer->initStates(w, h, flags);
return layer;
}
status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid)
{
/*
* called by the window manager, when a surface should be marked for
* destruction.
*
* The surface is removed from the current and drawing lists, but placed
* in the purgatory queue, so it's not destroyed right-away (we need
* to wait for all client's references to go away first).
*/
status_t err = NAME_NOT_FOUND;
Mutex::Autolock _l(mStateLock);
sp<LayerBaseClient> layer = client->getLayerUser(sid);
if (layer != 0) {
err = purgatorizeLayer_l(layer);
if (err == NO_ERROR) {
setTransactionFlags(eTransactionNeeded);
}
}
return err;
}
status_t SurfaceFlinger::destroySurface(const sp<LayerBaseClient>& layer)
{
// called by ~ISurface() when all references are gone
class MessageDestroySurface : public MessageBase {
SurfaceFlinger* flinger;
sp<LayerBaseClient> layer;
public:
MessageDestroySurface(
SurfaceFlinger* flinger, const sp<LayerBaseClient>& layer)
: flinger(flinger), layer(layer) { }
virtual bool handler() {
sp<LayerBaseClient> l(layer);
layer.clear(); // clear it outside of the lock;
Mutex::Autolock _l(flinger->mStateLock);
/*
* remove the layer from the current list -- chances are that it's
* not in the list anyway, because it should have been removed
* already upon request of the client (eg: window manager).
* However, a buggy client could have not done that.
* Since we know we don't have any more clients, we don't need
* to use the purgatory.
*/
status_t err = flinger->removeLayer_l(l);
LOGE_IF(err<0 && err != NAME_NOT_FOUND,
"error removing layer=%p (%s)", l.get(), strerror(-err));
return true;
}
};
postMessageAsync( new MessageDestroySurface(this, layer) );
return NO_ERROR;
}
status_t SurfaceFlinger::setClientState(
const sp<Client>& client,
int32_t count,
const layer_state_t* states)
{
Mutex::Autolock _l(mStateLock);
uint32_t flags = 0;
for (int i=0 ; i<count ; i++) {
const layer_state_t& s(states[i]);
sp<LayerBaseClient> layer(client->getLayerUser(s.surface));
if (layer != 0) {
const uint32_t what = s.what;
if (what & ePositionChanged) {
if (layer->setPosition(s.x, s.y))
flags |= eTraversalNeeded;
}
if (what & eLayerChanged) {
ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer);
if (layer->setLayer(s.z)) {
mCurrentState.layersSortedByZ.removeAt(idx);
mCurrentState.layersSortedByZ.add(layer);
// we need traversal (state changed)
// AND transaction (list changed)
flags |= eTransactionNeeded|eTraversalNeeded;
}
}
if (what & eSizeChanged) {
if (layer->setSize(s.w, s.h)) {
flags |= eTraversalNeeded;
mResizeTransationPending = true;
}
}
if (what & eAlphaChanged) {
if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f)))
flags |= eTraversalNeeded;
}
if (what & eMatrixChanged) {
if (layer->setMatrix(s.matrix))
flags |= eTraversalNeeded;
}
if (what & eTransparentRegionChanged) {
if (layer->setTransparentRegionHint(s.transparentRegion))
flags |= eTraversalNeeded;
}
if (what & eVisibilityChanged) {
if (layer->setFlags(s.flags, s.mask))
flags |= eTraversalNeeded;
}
}
}
if (flags) {
setTransactionFlags(flags);
}
return NO_ERROR;
}
void SurfaceFlinger::screenReleased(int dpy)
{
// this may be called by a signal handler, we can't do too much in here
android_atomic_or(eConsoleReleased, &mConsoleSignals);
signalEvent();
}
void SurfaceFlinger::screenAcquired(int dpy)
{
// this may be called by a signal handler, we can't do too much in here
android_atomic_or(eConsoleAcquired, &mConsoleSignals);
signalEvent();
}
status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args)
{
const size_t SIZE = 1024;
char buffer[SIZE];
String8 result;
if (!mDump.checkCalling()) {
snprintf(buffer, SIZE, "Permission Denial: "
"can't dump SurfaceFlinger from pid=%d, uid=%d\n",
IPCThreadState::self()->getCallingPid(),
IPCThreadState::self()->getCallingUid());
result.append(buffer);
} else {
// figure out if we're stuck somewhere
const nsecs_t now = systemTime();
const nsecs_t inSwapBuffers(mDebugInSwapBuffers);
const nsecs_t inTransaction(mDebugInTransaction);
nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0;
nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0;
// Try to get the main lock, but don't insist if we can't
// (this would indicate SF is stuck, but we want to be able to
// print something in dumpsys).
int retry = 3;
while (mStateLock.tryLock()<0 && --retry>=0) {
usleep(1000000);
}
const bool locked(retry >= 0);
if (!locked) {
snprintf(buffer, SIZE,
"SurfaceFlinger appears to be unresponsive, "
"dumping anyways (no locks held)\n");
result.append(buffer);
}
const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
const size_t count = currentLayers.size();
for (size_t i=0 ; i<count ; i++) {
const sp<LayerBase>& layer(currentLayers[i]);
layer->dump(result, buffer, SIZE);
const Layer::State& s(layer->drawingState());
s.transparentRegion.dump(result, "transparentRegion");
layer->transparentRegionScreen.dump(result, "transparentRegionScreen");
layer->visibleRegionScreen.dump(result, "visibleRegionScreen");
}
mWormholeRegion.dump(result, "WormholeRegion");
const DisplayHardware& hw(graphicPlane(0).displayHardware());
snprintf(buffer, SIZE,
" display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n",
mFreezeDisplay?"yes":"no", mFreezeCount,
mCurrentState.orientation, hw.canDraw());
result.append(buffer);
snprintf(buffer, SIZE,
" last eglSwapBuffers() time: %f us\n"
" last transaction time : %f us\n",
mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0);
result.append(buffer);
if (inSwapBuffersDuration || !locked) {
snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n",
inSwapBuffersDuration/1000.0);
result.append(buffer);
}
if (inTransactionDuration || !locked) {
snprintf(buffer, SIZE, " transaction time: %f us\n",
inTransactionDuration/1000.0);
result.append(buffer);
}
const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
alloc.dump(result);
if (locked) {
mStateLock.unlock();
}
}
write(fd, result.string(), result.size());
return NO_ERROR;
}
status_t SurfaceFlinger::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch (code) {
case CREATE_CONNECTION:
case OPEN_GLOBAL_TRANSACTION:
case CLOSE_GLOBAL_TRANSACTION:
case SET_ORIENTATION:
case FREEZE_DISPLAY:
case UNFREEZE_DISPLAY:
case BOOT_FINISHED:
{
// codes that require permission check
IPCThreadState* ipc = IPCThreadState::self();
const int pid = ipc->getCallingPid();
const int uid = ipc->getCallingUid();
if ((uid != AID_GRAPHICS) && !mAccessSurfaceFlinger.check(pid, uid)) {
LOGE("Permission Denial: "
"can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
return PERMISSION_DENIED;
}
}
}
status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags);
if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
if (UNLIKELY(!mHardwareTest.checkCalling())) {
IPCThreadState* ipc = IPCThreadState::self();
const int pid = ipc->getCallingPid();
const int uid = ipc->getCallingUid();
LOGE("Permission Denial: "
"can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
return PERMISSION_DENIED;
}
int n;
switch (code) {
case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE
return NO_ERROR;
case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE
return NO_ERROR;
case 1002: // SHOW_UPDATES
n = data.readInt32();
mDebugRegion = n ? n : (mDebugRegion ? 0 : 1);
return NO_ERROR;
case 1003: // SHOW_BACKGROUND
n = data.readInt32();
mDebugBackground = n ? 1 : 0;
return NO_ERROR;
case 1004:{ // repaint everything
Mutex::Autolock _l(mStateLock);
const DisplayHardware& hw(graphicPlane(0).displayHardware());
mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe
signalEvent();
return NO_ERROR;
}
case 1005:{ // force transaction
setTransactionFlags(eTransactionNeeded|eTraversalNeeded);
return NO_ERROR;
}
case 1007: // set mFreezeCount
mFreezeCount = data.readInt32();
mFreezeDisplayTime = 0;
return NO_ERROR;
case 1010: // interrogate.
reply->writeInt32(0);
reply->writeInt32(0);
reply->writeInt32(mDebugRegion);
reply->writeInt32(mDebugBackground);
return NO_ERROR;
case 1013: {
Mutex::Autolock _l(mStateLock);
const DisplayHardware& hw(graphicPlane(0).displayHardware());
reply->writeInt32(hw.getPageFlipCount());
}
return NO_ERROR;
}
}
return err;
}
// ---------------------------------------------------------------------------
sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const
{
sp<Layer> result;
Mutex::Autolock _l(mStateLock);
result = mLayerMap.valueFor( sur->asBinder() ).promote();
return result;
}
// ---------------------------------------------------------------------------
Client::Client(const sp<SurfaceFlinger>& flinger)
: mFlinger(flinger), mNameGenerator(1)
{
}
Client::~Client()
{
const size_t count = mLayers.size();
for (size_t i=0 ; i<count ; i++) {
sp<LayerBaseClient> layer(mLayers.valueAt(i).promote());
if (layer != 0) {
mFlinger->removeLayer(layer);
}
}
}
status_t Client::initCheck() const {
return NO_ERROR;
}
ssize_t Client::attachLayer(const sp<LayerBaseClient>& layer)
{
int32_t name = android_atomic_inc(&mNameGenerator);
mLayers.add(name, layer);
return name;
}
void Client::detachLayer(const LayerBaseClient* layer)
{
// we do a linear search here, because this doesn't happen often
const size_t count = mLayers.size();
for (size_t i=0 ; i<count ; i++) {
if (mLayers.valueAt(i) == layer) {
mLayers.removeItemsAt(i, 1);
break;
}
}
}
sp<LayerBaseClient> Client::getLayerUser(int32_t i) const {
sp<LayerBaseClient> lbc;
const wp<LayerBaseClient>& layer(mLayers.valueFor(i));
if (layer != 0) {
lbc = layer.promote();
LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i));
}
return lbc;
}
sp<IMemoryHeap> Client::getControlBlock() const {
return 0;
}
ssize_t Client::getTokenForSurface(const sp<ISurface>& sur) const {
return -1;
}
sp<ISurface> Client::createSurface(
ISurfaceComposerClient::surface_data_t* params, int pid,
const String8& name,
DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
uint32_t flags)
{
return mFlinger->createSurface(this, pid, name, params,
display, w, h, format, flags);
}
status_t Client::destroySurface(SurfaceID sid) {
return mFlinger->removeSurface(this, sid);
}
status_t Client::setState(int32_t count, const layer_state_t* states) {
return mFlinger->setClientState(this, count, states);
}
// ---------------------------------------------------------------------------
UserClient::UserClient(const sp<SurfaceFlinger>& flinger)
: ctrlblk(0), mBitmap(0), mFlinger(flinger)
{
const int pgsize = getpagesize();
const int cblksize = ((sizeof(SharedClient)+(pgsize-1))&~(pgsize-1));
mCblkHeap = new MemoryHeapBase(cblksize, 0,
"SurfaceFlinger Client control-block");
ctrlblk = static_cast<SharedClient *>(mCblkHeap->getBase());
if (ctrlblk) { // construct the shared structure in-place.
new(ctrlblk) SharedClient;
}
}
UserClient::~UserClient()
{
if (ctrlblk) {
ctrlblk->~SharedClient(); // destroy our shared-structure.
}
/*
* When a UserClient dies, it's unclear what to do exactly.
* We could go ahead and destroy all surfaces linked to that client
* however, it wouldn't be fair to the main Client
* (usually the the window-manager), which might want to re-target
* the layer to another UserClient.
* I think the best is to do nothing, or not much; in most cases the
* WM itself will go ahead and clean things up when it detects a client of
* his has died.
* The remaining question is what to display? currently we keep
* just keep the current buffer.
*/
}
status_t UserClient::initCheck() const {
return ctrlblk == 0 ? NO_INIT : NO_ERROR;
}
void UserClient::detachLayer(const Layer* layer)
{
int32_t name = layer->getToken();
if (name >= 0) {
int32_t mask = 1LU<<name;
if ((android_atomic_and(~mask, &mBitmap) & mask) == 0) {
LOGW("token %d wasn't marked as used %08x", name, int(mBitmap));
}
}
}
sp<IMemoryHeap> UserClient::getControlBlock() const {
return mCblkHeap;
}
ssize_t UserClient::getTokenForSurface(const sp<ISurface>& sur) const
{
int32_t name = NAME_NOT_FOUND;
sp<Layer> layer(mFlinger->getLayer(sur));
if (layer == 0) {
return name;
}
// if this layer already has a token, just return it
name = layer->getToken();
if ((name >= 0) && (layer->getClient() == this)) {
return name;
}
name = 0;
do {
int32_t mask = 1LU<<name;
if ((android_atomic_or(mask, &mBitmap) & mask) == 0) {
// we found and locked that name
status_t err = layer->setToken(
const_cast<UserClient*>(this), ctrlblk, name);
if (err != NO_ERROR) {
// free the name
android_atomic_and(~mask, &mBitmap);
name = err;
}
break;
}
if (++name > 31)
name = NO_MEMORY;
} while(name >= 0);
//LOGD("getTokenForSurface(%p) => %d (client=%p, bitmap=%08lx)",
// sur->asBinder().get(), name, this, mBitmap);
return name;
}
sp<ISurface> UserClient::createSurface(
ISurfaceComposerClient::surface_data_t* params, int pid,
const String8& name,
DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
uint32_t flags) {
return 0;
}
status_t UserClient::destroySurface(SurfaceID sid) {
return INVALID_OPERATION;
}
status_t UserClient::setState(int32_t count, const layer_state_t* states) {
return INVALID_OPERATION;
}
// ---------------------------------------------------------------------------
GraphicPlane::GraphicPlane()
: mHw(0)
{
}
GraphicPlane::~GraphicPlane() {
delete mHw;
}
bool GraphicPlane::initialized() const {
return mHw ? true : false;
}
int GraphicPlane::getWidth() const {
return mWidth;
}
int GraphicPlane::getHeight() const {
return mHeight;
}
void GraphicPlane::setDisplayHardware(DisplayHardware *hw)
{
mHw = hw;
// initialize the display orientation transform.
// it's a constant that should come from the display driver.
int displayOrientation = ISurfaceComposer::eOrientationDefault;
char property[PROPERTY_VALUE_MAX];
if (property_get("ro.sf.hwrotation", property, NULL) > 0) {
//displayOrientation
switch (atoi(property)) {
case 90:
displayOrientation = ISurfaceComposer::eOrientation90;
break;
case 270:
displayOrientation = ISurfaceComposer::eOrientation270;
break;
}
}
const float w = hw->getWidth();
const float h = hw->getHeight();
GraphicPlane::orientationToTransfrom(displayOrientation, w, h,
&mDisplayTransform);
if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) {
mDisplayWidth = h;
mDisplayHeight = w;
} else {
mDisplayWidth = w;
mDisplayHeight = h;
}
setOrientation(ISurfaceComposer::eOrientationDefault);
}
status_t GraphicPlane::orientationToTransfrom(
int orientation, int w, int h, Transform* tr)
{
uint32_t flags = 0;
switch (orientation) {
case ISurfaceComposer::eOrientationDefault:
flags = Transform::ROT_0;
break;
case ISurfaceComposer::eOrientation90:
flags = Transform::ROT_90;
break;
case ISurfaceComposer::eOrientation180:
flags = Transform::ROT_180;
break;
case ISurfaceComposer::eOrientation270:
flags = Transform::ROT_270;
break;
default:
return BAD_VALUE;
}
tr->set(flags, w, h);
return NO_ERROR;
}
status_t GraphicPlane::setOrientation(int orientation)
{
// If the rotation can be handled in hardware, this is where
// the magic should happen.
const DisplayHardware& hw(displayHardware());
const float w = mDisplayWidth;
const float h = mDisplayHeight;
mWidth = int(w);
mHeight = int(h);
Transform orientationTransform;
GraphicPlane::orientationToTransfrom(orientation, w, h,
&orientationTransform);
if (orientation & ISurfaceComposer::eOrientationSwapMask) {
mWidth = int(h);
mHeight = int(w);
}
mOrientation = orientation;
mGlobalTransform = mDisplayTransform * orientationTransform;
return NO_ERROR;
}
const DisplayHardware& GraphicPlane::displayHardware() const {
return *mHw;
}
const Transform& GraphicPlane::transform() const {
return mGlobalTransform;
}
EGLDisplay GraphicPlane::getEGLDisplay() const {
return mHw->getEGLDisplay();
}
// ---------------------------------------------------------------------------
}; // namespace android