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SurfaceFlinger.cpp
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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.
*/
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include <stdint.h>
#include <sys/types.h>
#include <errno.h>
#include <math.h>
#include <dlfcn.h>
#include <EGL/egl.h>
#include <GLES/gl.h>
#include <cutils/log.h>
#include <cutils/properties.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <binder/MemoryHeapBase.h>
#include <binder/PermissionCache.h>
#include <ui/DisplayInfo.h>
#include <gui/BitTube.h>
#include <gui/BufferQueue.h>
#include <gui/GuiConfig.h>
#include <gui/IDisplayEventConnection.h>
#include <gui/SurfaceTextureClient.h>
#include <ui/GraphicBufferAllocator.h>
#include <ui/PixelFormat.h>
#include <ui/UiConfig.h>
#include <utils/misc.h>
#include <utils/String8.h>
#include <utils/String16.h>
#include <utils/StopWatch.h>
#include <utils/Trace.h>
#include <private/android_filesystem_config.h>
#include "clz.h"
#include "DdmConnection.h"
#include "DisplayDevice.h"
#include "Client.h"
#include "EventThread.h"
#include "GLExtensions.h"
#include "Layer.h"
#include "LayerDim.h"
#include "LayerScreenshot.h"
#include "SurfaceFlinger.h"
#include "DisplayHardware/FramebufferSurface.h"
#include "DisplayHardware/GraphicBufferAlloc.h"
#include "DisplayHardware/HWComposer.h"
#ifdef SAMSUNG_HDMI_SUPPORT
#include "SecTVOutService.h"
#endif
#define EGL_VERSION_HW_ANDROID 0x3143
#define DISPLAY_COUNT 1
namespace android {
// ---------------------------------------------------------------------------
const String16 sHardwareTest("android.permission.HARDWARE_TEST");
const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER");
const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER");
const String16 sDump("android.permission.DUMP");
// ---------------------------------------------------------------------------
SurfaceFlinger::SurfaceFlinger()
: BnSurfaceComposer(), Thread(false),
mTransactionFlags(0),
mTransactionPending(false),
mAnimTransactionPending(false),
mLayersRemoved(false),
mRepaintEverything(0),
mBootTime(systemTime()),
mVisibleRegionsDirty(false),
mHwWorkListDirty(false),
mDebugRegion(0),
mDebugDDMS(0),
mDebugDisableHWC(0),
mDebugDisableTransformHint(0),
mDebugInSwapBuffers(0),
mLastSwapBufferTime(0),
mDebugInTransaction(0),
mLastTransactionTime(0),
mBootFinished(false),
mUseDithering(0)
{
ALOGI("SurfaceFlinger is starting");
// debugging stuff...
char value[PROPERTY_VALUE_MAX];
property_get("debug.sf.showupdates", value, "0");
mDebugRegion = atoi(value);
property_get("debug.sf.ddms", value, "0");
mDebugDDMS = atoi(value);
if (mDebugDDMS) {
if (!startDdmConnection()) {
// start failed, and DDMS debugging not enabled
mDebugDDMS = 0;
}
}
property_get("persist.sys.use_dithering", value, "1");
mUseDithering = atoi(value);
ALOGI_IF(mDebugRegion, "showupdates enabled");
ALOGI_IF(mDebugDDMS, "DDMS debugging enabled");
ALOGI_IF(mUseDithering, "use dithering");
#ifdef SAMSUNG_HDMI_SUPPORT
ALOGD(">>> Run service");
android::SecTVOutService::instantiate();
#if defined(SAMSUNG_EXYNOS5250)
mHdmiClient = SecHdmiClient::getInstance();
mHdmiClient->setHdmiEnable(1);
#endif
#endif
}
void SurfaceFlinger::onFirstRef()
{
mEventQueue.init(this);
run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY);
// Wait for the main thread to be done with its initialization
mReadyToRunBarrier.wait();
}
SurfaceFlinger::~SurfaceFlinger()
{
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
eglTerminate(display);
}
void SurfaceFlinger::binderDied(const wp<IBinder>& who)
{
// the window manager died on us. prepare its eulogy.
// restore initial conditions (default device unblank, etc)
initializeDisplays();
// restart the boot-animation
startBootAnim();
}
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<IBinder> SurfaceFlinger::createDisplay(const String8& displayName,
bool secure)
{
class DisplayToken : public BBinder {
sp<SurfaceFlinger> flinger;
virtual ~DisplayToken() {
// no more references, this display must be terminated
Mutex::Autolock _l(flinger->mStateLock);
flinger->mCurrentState.displays.removeItem(this);
flinger->setTransactionFlags(eDisplayTransactionNeeded);
}
public:
DisplayToken(const sp<SurfaceFlinger>& flinger)
: flinger(flinger) {
}
};
sp<BBinder> token = new DisplayToken(this);
Mutex::Autolock _l(mStateLock);
DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL);
info.displayName = displayName;
info.isSecure = secure;
mCurrentState.displays.add(token, info);
return token;
}
sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) {
if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) {
ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id);
return NULL;
}
return mDefaultDisplays[id];
}
sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc()
{
sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc());
return gba;
}
void SurfaceFlinger::bootFinished()
{
const nsecs_t now = systemTime();
const nsecs_t duration = now - mBootTime;
ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) );
mBootFinished = true;
// wait patiently for the window manager death
const String16 name("window");
sp<IBinder> window(defaultServiceManager()->getService(name));
if (window != 0) {
window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this));
}
// stop boot animation
// formerly we would just kill the process, but we now ask it to exit so it
// can choose where to stop the animation.
property_set("service.bootanim.exit", "1");
}
void SurfaceFlinger::deleteTextureAsync(GLuint texture) {
class MessageDestroyGLTexture : public MessageBase {
GLuint texture;
public:
MessageDestroyGLTexture(GLuint texture)
: texture(texture) {
}
virtual bool handler() {
glDeleteTextures(1, &texture);
return true;
}
};
postMessageAsync(new MessageDestroyGLTexture(texture));
}
status_t SurfaceFlinger::selectConfigForAttribute(
EGLDisplay dpy,
EGLint const* attrs,
EGLint attribute, EGLint wanted,
EGLConfig* outConfig)
{
EGLConfig config = NULL;
EGLint numConfigs = -1, n=0;
eglGetConfigs(dpy, NULL, 0, &numConfigs);
EGLConfig* const configs = new EGLConfig[numConfigs];
eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
if (n) {
if (attribute != EGL_NONE) {
for (int i=0 ; i<n ; i++) {
EGLint value = 0;
eglGetConfigAttrib(dpy, configs[i], attribute, &value);
if (wanted == value) {
*outConfig = configs[i];
delete [] configs;
return NO_ERROR;
}
}
} else {
// just pick the first one
*outConfig = configs[0];
delete [] configs;
return NO_ERROR;
}
}
delete [] configs;
return NAME_NOT_FOUND;
}
class EGLAttributeVector {
struct Attribute;
class Adder;
friend class Adder;
KeyedVector<Attribute, EGLint> mList;
struct Attribute {
Attribute() {};
Attribute(EGLint v) : v(v) { }
EGLint v;
bool operator < (const Attribute& other) const {
// this places EGL_NONE at the end
EGLint lhs(v);
EGLint rhs(other.v);
if (lhs == EGL_NONE) lhs = 0x7FFFFFFF;
if (rhs == EGL_NONE) rhs = 0x7FFFFFFF;
return lhs < rhs;
}
};
class Adder {
friend class EGLAttributeVector;
EGLAttributeVector& v;
EGLint attribute;
Adder(EGLAttributeVector& v, EGLint attribute)
: v(v), attribute(attribute) {
}
public:
void operator = (EGLint value) {
if (attribute != EGL_NONE) {
v.mList.add(attribute, value);
}
}
operator EGLint () const { return v.mList[attribute]; }
};
public:
EGLAttributeVector() {
mList.add(EGL_NONE, EGL_NONE);
}
void remove(EGLint attribute) {
if (attribute != EGL_NONE) {
mList.removeItem(attribute);
}
}
Adder operator [] (EGLint attribute) {
return Adder(*this, attribute);
}
EGLint operator [] (EGLint attribute) const {
return mList[attribute];
}
// cast-operator to (EGLint const*)
operator EGLint const* () const { return &mList.keyAt(0).v; }
};
EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) {
// select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
// it is to be used with WIFI displays
EGLConfig config;
EGLint dummy;
status_t err;
EGLAttributeVector attribs;
attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT;
attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE;
attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE;
attribs[EGL_RED_SIZE] = 8;
attribs[EGL_GREEN_SIZE] = 8;
attribs[EGL_BLUE_SIZE] = 8;
err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config);
if (!err)
goto success;
// maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID
ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID");
attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID);
err = selectConfigForAttribute(display, attribs,
EGL_NATIVE_VISUAL_ID, nativeVisualId, &config);
if (!err)
goto success;
// maybe we failed because of EGL_RECORDABLE_ANDROID
ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID");
attribs.remove(EGL_RECORDABLE_ANDROID);
err = selectConfigForAttribute(display, attribs,
EGL_NATIVE_VISUAL_ID, nativeVisualId, &config);
if (!err)
goto success;
// allow less than 24-bit color; the non-gpu-accelerated emulator only
// supports 16-bit color
ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed");
attribs.remove(EGL_RED_SIZE);
attribs.remove(EGL_GREEN_SIZE);
attribs.remove(EGL_BLUE_SIZE);
err = selectConfigForAttribute(display, attribs,
EGL_NATIVE_VISUAL_ID, nativeVisualId, &config);
if (!err)
goto success;
// this EGL is too lame for Android
ALOGE("no suitable EGLConfig found, giving up");
return 0;
success:
if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy))
ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!");
return config;
}
EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) {
// Also create our EGLContext
EGLint contextAttributes[] = {
#ifdef EGL_IMG_context_priority
#ifdef HAS_CONTEXT_PRIORITY
#warning "using EGL_IMG_context_priority"
EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG,
#endif
#endif
EGL_NONE, EGL_NONE
};
EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes);
ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed");
return ctxt;
}
void SurfaceFlinger::initializeGL(EGLDisplay display) {
GLExtensions& extensions(GLExtensions::getInstance());
extensions.initWithGLStrings(
glGetString(GL_VENDOR),
glGetString(GL_RENDERER),
glGetString(GL_VERSION),
glGetString(GL_EXTENSIONS),
eglQueryString(display, EGL_VENDOR),
eglQueryString(display, EGL_VERSION),
eglQueryString(display, EGL_EXTENSIONS));
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glPixelStorei(GL_PACK_ALIGNMENT, 4);
glEnableClientState(GL_VERTEX_ARRAY);
glShadeModel(GL_FLAT);
if (mUseDithering == 2) {
glEnable(GL_DITHER);
} else {
glDisable(GL_DITHER);
}
glDisable(GL_CULL_FACE);
struct pack565 {
inline uint16_t operator() (int r, int g, int b) const {
return (r<<11)|(g<<5)|b;
}
} pack565;
const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) };
glGenTextures(1, &mProtectedTexName);
glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
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, 1, 1, 0,
GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData);
// print some debugging info
EGLint r,g,b,a;
eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r);
eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g);
eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b);
eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a);
ALOGI("EGL informations:");
ALOGI("vendor : %s", extensions.getEglVendor());
ALOGI("version : %s", extensions.getEglVersion());
ALOGI("extensions: %s", extensions.getEglExtension());
ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported");
ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig);
ALOGI("OpenGL ES informations:");
ALOGI("vendor : %s", extensions.getVendor());
ALOGI("renderer : %s", extensions.getRenderer());
ALOGI("version : %s", extensions.getVersion());
ALOGI("extensions: %s", extensions.getExtension());
ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize);
ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]);
// XXX Assume bit depth for red is equal to minimum depth of all colors
mMinColorDepth = r;
}
status_t SurfaceFlinger::readyToRun()
{
ALOGI( "SurfaceFlinger's main thread ready to run. "
"Initializing graphics H/W...");
// initialize EGL for the default display
mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglInitialize(mEGLDisplay, NULL, NULL);
// Initialize the H/W composer object. There may or may not be an
// actual hardware composer underneath.
mHwc = new HWComposer(this,
*static_cast<HWComposer::EventHandler *>(this));
// initialize the config and context
EGLint format = mHwc->getVisualID();
mEGLConfig = selectEGLConfig(mEGLDisplay, format);
mEGLContext = createGLContext(mEGLDisplay, mEGLConfig);
LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT,
"couldn't create EGLContext");
// initialize our non-virtual displays
for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) {
DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i);
mDefaultDisplays[i] = new BBinder();
wp<IBinder> token = mDefaultDisplays[i];
// set-up the displays that are already connected
if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) {
// All non-virtual displays are currently considered secure.
bool isSecure = true;
mCurrentState.displays.add(token, DisplayDeviceState(type));
sp<FramebufferSurface> fbs = new FramebufferSurface(*mHwc, i);
sp<SurfaceTextureClient> stc = new SurfaceTextureClient(
static_cast< sp<ISurfaceTexture> >(fbs->getBufferQueue()));
sp<DisplayDevice> hw = new DisplayDevice(this,
type, isSecure, token, stc, fbs, mEGLConfig);
if (i > DisplayDevice::DISPLAY_PRIMARY) {
// FIXME: currently we don't get blank/unblank requests
// for displays other than the main display, so we always
// assume a connected display is unblanked.
ALOGD("marking display %d as acquired/unblanked", i);
hw->acquireScreen();
}
mDisplays.add(token, hw);
}
}
// we need a GL context current in a few places, when initializing
// OpenGL ES (see below), or creating a layer,
// or when a texture is (asynchronously) destroyed, and for that
// we need a valid surface, so it's convenient to use the main display
// for that.
sp<const DisplayDevice> hw(getDefaultDisplayDevice());
// initialize OpenGL ES
DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext);
initializeGL(mEGLDisplay);
// start the EventThread
mEventThread = new EventThread(this);
mEventQueue.setEventThread(mEventThread);
// initialize our drawing state
mDrawingState = mCurrentState;
// We're now ready to accept clients...
mReadyToRunBarrier.open();
// set initial conditions (e.g. unblank default device)
initializeDisplays();
// start boot animation
startBootAnim();
return NO_ERROR;
}
int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) {
return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ?
type : mHwc->allocateDisplayId();
}
void SurfaceFlinger::startBootAnim() {
// start boot animation
property_set("service.bootanim.exit", "0");
property_set("ctl.start", "bootanim");
}
uint32_t SurfaceFlinger::getMaxTextureSize() const {
return mMaxTextureSize;
}
uint32_t SurfaceFlinger::getMinColorDepth() const {
return mMinColorDepth;
}
uint32_t SurfaceFlinger::getMaxViewportDims() const {
return mMaxViewportDims[0] < mMaxViewportDims[1] ?
mMaxViewportDims[0] : mMaxViewportDims[1];
}
// ----------------------------------------------------------------------------
bool SurfaceFlinger::authenticateSurfaceTexture(
const sp<ISurfaceTexture>& surfaceTexture) const {
Mutex::Autolock _l(mStateLock);
sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder());
// Check the visible layer list for the ISurface
const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
size_t count = currentLayers.size();
for (size_t i=0 ; i<count ; i++) {
const sp<LayerBase>& layer(currentLayers[i]);
sp<LayerBaseClient> lbc(layer->getLayerBaseClient());
if (lbc != NULL) {
wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder();
if (lbcBinder == surfaceTextureBinder) {
return true;
}
}
}
// Check the layers in the purgatory. This check is here so that if a
// SurfaceTexture gets destroyed before all the clients are done using it,
// the error will not be reported as "surface XYZ is not authenticated", but
// will instead fail later on when the client tries to use the surface,
// which should be reported as "surface XYZ returned an -ENODEV". The
// purgatorized layers are no less authentic than the visible ones, so this
// should not cause any harm.
size_t purgatorySize = mLayerPurgatory.size();
for (size_t i=0 ; i<purgatorySize ; i++) {
const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i));
sp<LayerBaseClient> lbc(layer->getLayerBaseClient());
if (lbc != NULL) {
wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder();
if (lbcBinder == surfaceTextureBinder) {
return true;
}
}
}
return false;
}
status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) {
int32_t type = BAD_VALUE;
for (int i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) {
if (display == mDefaultDisplays[i]) {
type = i;
break;
}
}
if (type < 0) {
return type;
}
const HWComposer& hwc(getHwComposer());
if (!hwc.isConnected(type)) {
return NAME_NOT_FOUND;
}
float xdpi = hwc.getDpiX(type);
float ydpi = hwc.getDpiY(type);
// TODO: Not sure if display density should handled by SF any longer
class Density {
static int getDensityFromProperty(char const* propName) {
char property[PROPERTY_VALUE_MAX];
int density = 0;
if (property_get(propName, property, NULL) > 0) {
density = atoi(property);
}
return density;
}
public:
static int getEmuDensity() {
return getDensityFromProperty("qemu.sf.lcd_density"); }
static int getBuildDensity() {
return getDensityFromProperty("ro.sf.lcd_density"); }
};
if (type == DisplayDevice::DISPLAY_PRIMARY) {
// The density of the device is provided by a build property
float density = Density::getBuildDensity() / 160.0f;
if (density == 0) {
// the build doesn't provide a density -- this is wrong!
// use xdpi instead
ALOGE("ro.sf.lcd_density must be defined as a build property");
density = xdpi / 160.0f;
}
if (Density::getEmuDensity()) {
// if "qemu.sf.lcd_density" is specified, it overrides everything
xdpi = ydpi = density = Density::getEmuDensity();
density /= 160.0f;
}
info->density = density;
// TODO: this needs to go away (currently needed only by webkit)
sp<const DisplayDevice> hw(getDefaultDisplayDevice());
info->orientation = hw->getOrientation();
getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo);
} else {
// TODO: where should this value come from?
static const int TV_DENSITY = 213;
info->density = TV_DENSITY / 160.0f;
info->orientation = 0;
}
char value[PROPERTY_VALUE_MAX];
property_get("ro.sf.hwrotation", value, "0");
int additionalRot = atoi(value) / 90;
if ((type == DisplayDevice::DISPLAY_PRIMARY) && (additionalRot & DisplayState::eOrientationSwapMask)) {
info->h = hwc.getWidth(type);
info->w = hwc.getHeight(type);
info->xdpi = ydpi;
info->ydpi = xdpi;
}
else {
info->w = hwc.getWidth(type);
info->h = hwc.getHeight(type);
info->xdpi = xdpi;
info->ydpi = ydpi;
}
info->fps = float(1e9 / hwc.getRefreshPeriod(type));
// All non-virtual displays are currently considered secure.
info->secure = true;
return NO_ERROR;
}
// ----------------------------------------------------------------------------
sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() {
return mEventThread->createEventConnection();
}
// ----------------------------------------------------------------------------
void SurfaceFlinger::waitForEvent() {
mEventQueue.waitMessage();
}
void SurfaceFlinger::signalTransaction() {
mEventQueue.invalidate();
}
void SurfaceFlinger::signalLayerUpdate() {
mEventQueue.invalidate();
}
void SurfaceFlinger::signalRefresh() {
mEventQueue.refresh();
}
status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg,
nsecs_t reltime, uint32_t flags) {
return mEventQueue.postMessage(msg, reltime);
}
status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg,
nsecs_t reltime, uint32_t flags) {
status_t res = mEventQueue.postMessage(msg, reltime);
if (res == NO_ERROR) {
msg->wait();
}
return res;
}
bool SurfaceFlinger::threadLoop() {
waitForEvent();
return true;
}
void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) {
if (mEventThread == NULL) {
// This is a temporary workaround for b/7145521. A non-null pointer
// does not mean EventThread has finished initializing, so this
// is not a correct fix.
ALOGW("WARNING: EventThread not started, ignoring vsync");
return;
}
if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) {
// we should only receive DisplayDevice::DisplayType from the vsync callback
mEventThread->onVSyncReceived(type, timestamp);
}
}
void SurfaceFlinger::onHotplugReceived(int type, bool connected) {
if (mEventThread == NULL) {
// This is a temporary workaround for b/7145521. A non-null pointer
// does not mean EventThread has finished initializing, so this
// is not a correct fix.
ALOGW("WARNING: EventThread not started, ignoring hotplug");
return;
}
if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) {
Mutex::Autolock _l(mStateLock);
if (connected == false) {
mCurrentState.displays.removeItem(mDefaultDisplays[type]);
} else {
DisplayDeviceState info((DisplayDevice::DisplayType)type);
mCurrentState.displays.add(mDefaultDisplays[type], info);
}
setTransactionFlags(eDisplayTransactionNeeded);
// Defer EventThread notification until SF has updated mDisplays.
}
}
void SurfaceFlinger::eventControl(int disp, int event, int enabled) {
getHwComposer().eventControl(disp, event, enabled);
}
void SurfaceFlinger::onMessageReceived(int32_t what) {
ATRACE_CALL();
switch (what) {
case MessageQueue::INVALIDATE:
handleMessageTransaction();
handleMessageInvalidate();
signalRefresh();
break;
case MessageQueue::REFRESH:
handleMessageRefresh();
break;
}
}
void SurfaceFlinger::handleMessageTransaction() {
uint32_t transactionFlags = peekTransactionFlags(eTransactionMask);
if (transactionFlags) {
handleTransaction(transactionFlags);
}
}
void SurfaceFlinger::handleMessageInvalidate() {
ATRACE_CALL();
handlePageFlip();
}
void SurfaceFlinger::handleMessageRefresh() {
ATRACE_CALL();
preComposition();
rebuildLayerStacks();
setUpHWComposer();
doDebugFlashRegions();
doComposition();
postComposition();
}
void SurfaceFlinger::doDebugFlashRegions()
{
// is debugging enabled
if (CC_LIKELY(!mDebugRegion))
return;
const bool repaintEverything = mRepaintEverything;
for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
const sp<DisplayDevice>& hw(mDisplays[dpy]);
if (hw->canDraw()) {
// transform the dirty region into this screen's coordinate space
const Region dirtyRegion(hw->getDirtyRegion(repaintEverything));
if (!dirtyRegion.isEmpty()) {
// redraw the whole screen
doComposeSurfaces(hw, Region(hw->bounds()));
// and draw the dirty region
glDisable(GL_TEXTURE_EXTERNAL_OES);
glDisable(GL_TEXTURE_2D);
glDisable(GL_BLEND);
glColor4f(1, 0, 1, 1);
const int32_t height = hw->getHeight();
Region::const_iterator it = dirtyRegion.begin();
Region::const_iterator const end = dirtyRegion.end();
while (it != end) {
const Rect& r = *it++;
GLfloat vertices[][2] = {
{ r.left, height - r.top },
{ r.left, height - r.bottom },
{ r.right, height - r.bottom },
{ r.right, height - r.top }
};
glVertexPointer(2, GL_FLOAT, 0, vertices);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
hw->compositionComplete();
hw->swapBuffers(getHwComposer());
}
}
}
postFramebuffer();
if (mDebugRegion > 1) {
usleep(mDebugRegion * 1000);
}
HWComposer& hwc(getHwComposer());
if (hwc.initCheck() == NO_ERROR) {
status_t err = hwc.prepare();
ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err));
}
}
void SurfaceFlinger::preComposition()
{
bool needExtraInvalidate = false;
const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
const size_t count = currentLayers.size();
for (size_t i=0 ; i<count ; i++) {
if (currentLayers[i]->onPreComposition()) {
needExtraInvalidate = true;
}
}
if (needExtraInvalidate) {
signalLayerUpdate();
}
}
void SurfaceFlinger::postComposition()
{
const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
const size_t count = currentLayers.size();
for (size_t i=0 ; i<count ; i++) {
currentLayers[i]->onPostComposition();
}
}
void SurfaceFlinger::rebuildLayerStacks() {
// rebuild the visible layer list per screen
if (CC_UNLIKELY(mVisibleRegionsDirty)) {
ATRACE_CALL();
mVisibleRegionsDirty = false;
invalidateHwcGeometry();
const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
Region opaqueRegion;
Region dirtyRegion;
Vector< sp<LayerBase> > layersSortedByZ;
const sp<DisplayDevice>& hw(mDisplays[dpy]);
const Transform& tr(hw->getTransform());
const Rect bounds(hw->getBounds());
if (hw->canDraw()) {
SurfaceFlinger::computeVisibleRegions(currentLayers,
hw->getLayerStack(), dirtyRegion, opaqueRegion);
const size_t count = currentLayers.size();
for (size_t i=0 ; i<count ; i++) {
const sp<LayerBase>& layer(currentLayers[i]);
const Layer::State& s(layer->drawingState());
if (s.layerStack == hw->getLayerStack()) {
Region drawRegion(tr.transform(
layer->visibleNonTransparentRegion));
drawRegion.andSelf(bounds);
if (!drawRegion.isEmpty()) {
layersSortedByZ.add(layer);
}
}
}
}
hw->setVisibleLayersSortedByZ(layersSortedByZ);
hw->undefinedRegion.set(bounds);
hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion));
hw->dirtyRegion.orSelf(dirtyRegion);
}
}
}
void SurfaceFlinger::setUpHWComposer() {
HWComposer& hwc(getHwComposer());
if (hwc.initCheck() == NO_ERROR) {
// build the h/w work list
if (CC_UNLIKELY(mHwWorkListDirty)) {
mHwWorkListDirty = false;
for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
sp<const DisplayDevice> hw(mDisplays[dpy]);
const int32_t id = hw->getHwcDisplayId();
if (id >= 0) {
const Vector< sp<LayerBase> >& currentLayers(
hw->getVisibleLayersSortedByZ());
const size_t count = currentLayers.size();
if (hwc.createWorkList(id, count) == NO_ERROR) {
HWComposer::LayerListIterator cur = hwc.begin(id);
const HWComposer::LayerListIterator end = hwc.end(id);
for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) {
const sp<LayerBase>& layer(currentLayers[i]);
layer->setGeometry(hw, *cur);
if (mDebugDisableHWC || mDebugRegion) {
cur->setSkip(true);
}
}
}
}
}
}
// set the per-frame data
for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
sp<const DisplayDevice> hw(mDisplays[dpy]);
const int32_t id = hw->getHwcDisplayId();
if (id >= 0) {
const Vector< sp<LayerBase> >& currentLayers(
hw->getVisibleLayersSortedByZ());
const size_t count = currentLayers.size();
HWComposer::LayerListIterator cur = hwc.begin(id);
const HWComposer::LayerListIterator end = hwc.end(id);
for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) {
/*
* update the per-frame h/w composer data for each layer
* and build the transparent region of the FB