2 * Copyright (C) 2007 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
20 #include <sys/types.h>
28 #include <cutils/log.h>
29 #include <cutils/properties.h>
31 #include <binder/IPCThreadState.h>
32 #include <binder/IServiceManager.h>
33 #include <binder/MemoryHeapBase.h>
34 #include <binder/PermissionCache.h>
36 #include <ui/DisplayInfo.h>
38 #include <gui/BitTube.h>
39 #include <gui/BufferQueue.h>
40 #include <gui/IDisplayEventConnection.h>
41 #include <gui/SurfaceTextureClient.h>
43 #include <ui/GraphicBufferAllocator.h>
44 #include <ui/PixelFormat.h>
46 #include <utils/String8.h>
47 #include <utils/String16.h>
48 #include <utils/StopWatch.h>
49 #include <utils/Trace.h>
51 #include <private/android_filesystem_config.h>
54 #include "DdmConnection.h"
55 #include "DisplayDevice.h"
57 #include "EventThread.h"
58 #include "GLExtensions.h"
61 #include "LayerScreenshot.h"
62 #include "SurfaceFlinger.h"
64 #include "DisplayHardware/FramebufferSurface.h"
65 #include "DisplayHardware/HWComposer.h"
68 #define EGL_VERSION_HW_ANDROID 0x3143
70 #define DISPLAY_COUNT 1
73 // ---------------------------------------------------------------------------
75 const String16 sHardwareTest("android.permission.HARDWARE_TEST");
76 const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER");
77 const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER");
78 const String16 sDump("android.permission.DUMP");
80 // ---------------------------------------------------------------------------
82 SurfaceFlinger::SurfaceFlinger()
83 : BnSurfaceComposer(), Thread(false),
85 mTransationPending(false),
86 mLayersRemoved(false),
87 mRepaintEverything(0),
88 mBootTime(systemTime()),
89 mVisibleRegionsDirty(false),
90 mHwWorkListDirty(false),
94 mDebugDisableTransformHint(0),
95 mDebugInSwapBuffers(0),
96 mLastSwapBufferTime(0),
97 mDebugInTransaction(0),
98 mLastTransactionTime(0),
101 ALOGI("SurfaceFlinger is starting");
103 // debugging stuff...
104 char value[PROPERTY_VALUE_MAX];
106 property_get("debug.sf.showupdates", value, "0");
107 mDebugRegion = atoi(value);
109 property_get("debug.sf.ddms", value, "0");
110 mDebugDDMS = atoi(value);
112 if (!startDdmConnection()) {
113 // start failed, and DDMS debugging not enabled
117 ALOGI_IF(mDebugRegion, "showupdates enabled");
118 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled");
121 void SurfaceFlinger::onFirstRef()
123 mEventQueue.init(this);
125 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY);
127 // Wait for the main thread to be done with its initialization
128 mReadyToRunBarrier.wait();
132 SurfaceFlinger::~SurfaceFlinger()
134 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
135 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
136 eglTerminate(display);
139 void SurfaceFlinger::binderDied(const wp<IBinder>& who)
141 // the window manager died on us. prepare its eulogy.
143 // restore initial conditions (default device unblank, etc)
144 initializeDisplays();
146 // restart the boot-animation
150 sp<ISurfaceComposerClient> SurfaceFlinger::createConnection()
152 sp<ISurfaceComposerClient> bclient;
153 sp<Client> client(new Client(this));
154 status_t err = client->initCheck();
155 if (err == NO_ERROR) {
161 sp<IBinder> SurfaceFlinger::createDisplay()
163 class DisplayToken : public BBinder {
164 sp<SurfaceFlinger> flinger;
165 virtual ~DisplayToken() {
166 // no more references, this display must be terminated
167 Mutex::Autolock _l(flinger->mStateLock);
168 flinger->mCurrentState.displays.removeItem(this);
169 flinger->setTransactionFlags(eDisplayTransactionNeeded);
172 DisplayToken(const sp<SurfaceFlinger>& flinger)
177 sp<BBinder> token = new DisplayToken(this);
179 Mutex::Autolock _l(mStateLock);
180 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL);
181 mCurrentState.displays.add(token, info);
186 sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) {
187 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) {
188 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id);
191 return mDefaultDisplays[id];
194 sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc()
196 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc());
200 void SurfaceFlinger::bootFinished()
202 const nsecs_t now = systemTime();
203 const nsecs_t duration = now - mBootTime;
204 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) );
205 mBootFinished = true;
207 // wait patiently for the window manager death
208 const String16 name("window");
209 sp<IBinder> window(defaultServiceManager()->getService(name));
211 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this));
214 // stop boot animation
215 // formerly we would just kill the process, but we now ask it to exit so it
216 // can choose where to stop the animation.
217 property_set("service.bootanim.exit", "1");
220 void SurfaceFlinger::deleteTextureAsync(GLuint texture) {
221 class MessageDestroyGLTexture : public MessageBase {
224 MessageDestroyGLTexture(GLuint texture)
227 virtual bool handler() {
228 glDeleteTextures(1, &texture);
232 postMessageAsync(new MessageDestroyGLTexture(texture));
235 status_t SurfaceFlinger::selectConfigForPixelFormat(
239 EGLConfig* outConfig)
241 EGLConfig config = NULL;
242 EGLint numConfigs = -1, n=0;
243 eglGetConfigs(dpy, NULL, 0, &numConfigs);
244 EGLConfig* const configs = new EGLConfig[numConfigs];
245 eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
246 for (int i=0 ; i<n ; i++) {
247 EGLint nativeVisualId = 0;
248 eglGetConfigAttrib(dpy, configs[i], EGL_NATIVE_VISUAL_ID, &nativeVisualId);
249 if (nativeVisualId>0 && format == nativeVisualId) {
250 *outConfig = configs[i];
256 return NAME_NOT_FOUND;
259 EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) {
260 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
261 // it is to be used with WIFI displays
266 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
267 EGL_RECORDABLE_ANDROID, EGL_TRUE,
270 err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config);
272 // maybe we failed because of EGL_RECORDABLE_ANDROID
273 ALOGW("couldn't find an EGLConfig with EGL_RECORDABLE_ANDROID");
274 attribs[2] = EGL_NONE;
275 err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config);
277 ALOGE_IF(err, "couldn't find an EGLConfig matching the screen format");
278 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy) == EGL_TRUE) {
279 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!");
284 EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) {
285 // Also create our EGLContext
286 EGLint contextAttributes[] = {
287 #ifdef EGL_IMG_context_priority
288 #ifdef HAS_CONTEXT_PRIORITY
289 #warning "using EGL_IMG_context_priority"
290 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG,
295 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes);
296 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed");
300 void SurfaceFlinger::initializeGL(EGLDisplay display, const sp<DisplayDevice>& hw) {
301 EGLBoolean result = DisplayDevice::makeCurrent(display, hw, mEGLContext);
303 ALOGE("Couldn't create a working GLES context. check logs. exiting...");
307 GLExtensions& extensions(GLExtensions::getInstance());
308 extensions.initWithGLStrings(
309 glGetString(GL_VENDOR),
310 glGetString(GL_RENDERER),
311 glGetString(GL_VERSION),
312 glGetString(GL_EXTENSIONS),
313 eglQueryString(display, EGL_VENDOR),
314 eglQueryString(display, EGL_VERSION),
315 eglQueryString(display, EGL_EXTENSIONS));
317 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
318 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
320 glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
321 glPixelStorei(GL_PACK_ALIGNMENT, 4);
322 glEnableClientState(GL_VERTEX_ARRAY);
323 glShadeModel(GL_FLAT);
324 glDisable(GL_DITHER);
325 glDisable(GL_CULL_FACE);
328 inline uint16_t operator() (int r, int g, int b) const {
329 return (r<<11)|(g<<5)|b;
333 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) };
334 glGenTextures(1, &mProtectedTexName);
335 glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
336 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
337 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
338 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
339 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
340 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0,
341 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData);
343 // print some debugging info
345 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r);
346 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g);
347 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b);
348 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a);
349 ALOGI("EGL informations:");
350 ALOGI("vendor : %s", extensions.getEglVendor());
351 ALOGI("version : %s", extensions.getEglVersion());
352 ALOGI("extensions: %s", extensions.getEglExtension());
353 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported");
354 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig);
355 ALOGI("OpenGL ES informations:");
356 ALOGI("vendor : %s", extensions.getVendor());
357 ALOGI("renderer : %s", extensions.getRenderer());
358 ALOGI("version : %s", extensions.getVersion());
359 ALOGI("extensions: %s", extensions.getExtension());
360 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize);
361 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]);
364 status_t SurfaceFlinger::readyToRun()
366 ALOGI( "SurfaceFlinger's main thread ready to run. "
367 "Initializing graphics H/W...");
370 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
371 eglInitialize(mEGLDisplay, NULL, NULL);
373 // Initialize the main display
374 // create native window to main display
375 sp<FramebufferSurface> fbs = FramebufferSurface::create();
377 ALOGE("Display subsystem failed to initialize. check logs. exiting...");
381 sp<SurfaceTextureClient> stc(new SurfaceTextureClient(
382 static_cast<sp<ISurfaceTexture> >(fbs->getBufferQueue())));
384 // initialize the config and context
386 ANativeWindow* const anw = stc.get();
387 anw->query(anw, NATIVE_WINDOW_FORMAT, &format);
388 mEGLConfig = selectEGLConfig(mEGLDisplay, format);
389 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig);
391 // initialize our main display hardware
393 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) {
394 mDefaultDisplays[i] = new BBinder();
395 mCurrentState.displays.add(mDefaultDisplays[i],
396 DisplayDeviceState((DisplayDevice::DisplayType)i));
398 sp<DisplayDevice> hw = new DisplayDevice(this,
399 DisplayDevice::DISPLAY_PRIMARY,
400 mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY],
401 anw, fbs, mEGLConfig);
402 mDisplays.add(mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY], hw);
404 // initialize OpenGL ES
405 initializeGL(mEGLDisplay, hw);
407 // start the EventThread
408 mEventThread = new EventThread(this);
409 mEventQueue.setEventThread(mEventThread);
411 // initialize the H/W composer
412 mHwc = new HWComposer(this,
413 *static_cast<HWComposer::EventHandler *>(this),
416 // initialize our drawing state
417 mDrawingState = mCurrentState;
419 // We're now ready to accept clients...
420 mReadyToRunBarrier.open();
422 // set initial conditions (e.g. unblank default device)
423 initializeDisplays();
425 // start boot animation
431 int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) {
432 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ?
433 type : mHwc->allocateDisplayId();
436 void SurfaceFlinger::startBootAnim() {
437 // start boot animation
438 property_set("service.bootanim.exit", "0");
439 property_set("ctl.start", "bootanim");
442 uint32_t SurfaceFlinger::getMaxTextureSize() const {
443 return mMaxTextureSize;
446 uint32_t SurfaceFlinger::getMaxViewportDims() const {
447 return mMaxViewportDims[0] < mMaxViewportDims[1] ?
448 mMaxViewportDims[0] : mMaxViewportDims[1];
451 // ----------------------------------------------------------------------------
453 bool SurfaceFlinger::authenticateSurfaceTexture(
454 const sp<ISurfaceTexture>& surfaceTexture) const {
455 Mutex::Autolock _l(mStateLock);
456 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder());
458 // Check the visible layer list for the ISurface
459 const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
460 size_t count = currentLayers.size();
461 for (size_t i=0 ; i<count ; i++) {
462 const sp<LayerBase>& layer(currentLayers[i]);
463 sp<LayerBaseClient> lbc(layer->getLayerBaseClient());
465 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder();
466 if (lbcBinder == surfaceTextureBinder) {
472 // Check the layers in the purgatory. This check is here so that if a
473 // SurfaceTexture gets destroyed before all the clients are done using it,
474 // the error will not be reported as "surface XYZ is not authenticated", but
475 // will instead fail later on when the client tries to use the surface,
476 // which should be reported as "surface XYZ returned an -ENODEV". The
477 // purgatorized layers are no less authentic than the visible ones, so this
478 // should not cause any harm.
479 size_t purgatorySize = mLayerPurgatory.size();
480 for (size_t i=0 ; i<purgatorySize ; i++) {
481 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i));
482 sp<LayerBaseClient> lbc(layer->getLayerBaseClient());
484 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder();
485 if (lbcBinder == surfaceTextureBinder) {
494 status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) {
495 // TODO: this is mostly here only for compatibility
496 // the display size is needed but the display metrics should come from elsewhere
497 if (display != mDefaultDisplays[ISurfaceComposer::eDisplayIdMain]) {
498 // TODO: additional displays not yet supported
502 const HWComposer& hwc(getHwComposer());
503 float xdpi = hwc.getDpiX();
504 float ydpi = hwc.getDpiY();
506 // TODO: Not sure if display density should handled by SF any longer
508 static int getDensityFromProperty(char const* propName) {
509 char property[PROPERTY_VALUE_MAX];
511 if (property_get(propName, property, NULL) > 0) {
512 density = atoi(property);
517 static int getEmuDensity() {
518 return getDensityFromProperty("qemu.sf.lcd_density"); }
519 static int getBuildDensity() {
520 return getDensityFromProperty("ro.sf.lcd_density"); }
522 // The density of the device is provided by a build property
523 float density = Density::getBuildDensity() / 160.0f;
525 // the build doesn't provide a density -- this is wrong!
527 ALOGE("ro.sf.lcd_density must be defined as a build property");
528 density = xdpi / 160.0f;
530 if (Density::getEmuDensity()) {
531 // if "qemu.sf.lcd_density" is specified, it overrides everything
532 xdpi = ydpi = density = Density::getEmuDensity();
536 sp<const DisplayDevice> hw(getDefaultDisplayDevice());
537 info->w = hw->getWidth();
538 info->h = hw->getHeight();
541 info->fps = float(1e9 / hwc.getRefreshPeriod());
542 info->density = density;
543 info->orientation = hw->getOrientation();
544 // TODO: this needs to go away (currently needed only by webkit)
545 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo);
549 // ----------------------------------------------------------------------------
551 sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() {
552 return mEventThread->createEventConnection();
555 void SurfaceFlinger::connectDisplay(const sp<ISurfaceTexture>& surface) {
558 { // scope for the lock
559 Mutex::Autolock _l(mStateLock);
560 token = mExtDisplayToken;
564 token = createDisplay();
567 { // scope for the lock
568 Mutex::Autolock _l(mStateLock);
570 // release our current display. we're guarantee to have
571 // a reference to it (token), while we hold the lock
572 mExtDisplayToken = 0;
574 mExtDisplayToken = token;
577 DisplayDeviceState& info(mCurrentState.displays.editValueFor(token));
578 info.surface = surface;
579 setTransactionFlags(eDisplayTransactionNeeded);
583 // ----------------------------------------------------------------------------
585 void SurfaceFlinger::waitForEvent() {
586 mEventQueue.waitMessage();
589 void SurfaceFlinger::signalTransaction() {
590 mEventQueue.invalidate();
593 void SurfaceFlinger::signalLayerUpdate() {
594 mEventQueue.invalidate();
597 void SurfaceFlinger::signalRefresh() {
598 mEventQueue.refresh();
601 status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg,
602 nsecs_t reltime, uint32_t flags) {
603 return mEventQueue.postMessage(msg, reltime);
606 status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg,
607 nsecs_t reltime, uint32_t flags) {
608 status_t res = mEventQueue.postMessage(msg, reltime);
609 if (res == NO_ERROR) {
615 bool SurfaceFlinger::threadLoop() {
620 void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) {
621 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) {
622 // we should only receive DisplayDevice::DisplayType from the vsync callback
623 const wp<IBinder>& token(mDefaultDisplays[type]);
624 mEventThread->onVSyncReceived(token, timestamp);
628 void SurfaceFlinger::eventControl(int event, int enabled) {
629 getHwComposer().eventControl(event, enabled);
632 void SurfaceFlinger::onMessageReceived(int32_t what) {
635 case MessageQueue::INVALIDATE:
636 handleMessageTransaction();
637 handleMessageInvalidate();
640 case MessageQueue::REFRESH:
641 handleMessageRefresh();
646 void SurfaceFlinger::handleMessageTransaction() {
647 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask);
648 if (transactionFlags) {
649 handleTransaction(transactionFlags);
653 void SurfaceFlinger::handleMessageInvalidate() {
658 void SurfaceFlinger::handleMessageRefresh() {
661 rebuildLayerStacks();
663 doDebugFlashRegions();
668 void SurfaceFlinger::doDebugFlashRegions()
670 // is debugging enabled
671 if (CC_LIKELY(!mDebugRegion))
674 const bool repaintEverything = mRepaintEverything;
675 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
676 const sp<DisplayDevice>& hw(mDisplays[dpy]);
678 // transform the dirty region into this screen's coordinate space
679 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything));
680 if (!dirtyRegion.isEmpty()) {
681 // redraw the whole screen
682 doComposeSurfaces(hw, Region(hw->bounds()));
684 // and draw the dirty region
685 glDisable(GL_TEXTURE_EXTERNAL_OES);
686 glDisable(GL_TEXTURE_2D);
688 glColor4f(1, 0, 1, 1);
689 const int32_t height = hw->getHeight();
690 Region::const_iterator it = dirtyRegion.begin();
691 Region::const_iterator const end = dirtyRegion.end();
693 const Rect& r = *it++;
694 GLfloat vertices[][2] = {
695 { r.left, height - r.top },
696 { r.left, height - r.bottom },
697 { r.right, height - r.bottom },
698 { r.right, height - r.top }
700 glVertexPointer(2, GL_FLOAT, 0, vertices);
701 glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
703 hw->compositionComplete();
705 if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL) {
706 eglSwapBuffers(mEGLDisplay, hw->getEGLSurface());
714 if (mDebugRegion > 1) {
715 usleep(mDebugRegion * 1000);
719 void SurfaceFlinger::preComposition()
721 bool needExtraInvalidate = false;
722 const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
723 const size_t count = currentLayers.size();
724 for (size_t i=0 ; i<count ; i++) {
725 if (currentLayers[i]->onPreComposition()) {
726 needExtraInvalidate = true;
729 if (needExtraInvalidate) {
734 void SurfaceFlinger::postComposition()
736 const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
737 const size_t count = currentLayers.size();
738 for (size_t i=0 ; i<count ; i++) {
739 currentLayers[i]->onPostComposition();
743 void SurfaceFlinger::rebuildLayerStacks() {
744 // rebuild the visible layer list per screen
745 if (CC_UNLIKELY(mVisibleRegionsDirty)) {
747 mVisibleRegionsDirty = false;
748 invalidateHwcGeometry();
749 const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
750 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
751 const sp<DisplayDevice>& hw(mDisplays[dpy]);
752 const Transform& tr(hw->getTransform());
753 const Rect bounds(hw->getBounds());
757 computeVisibleRegions(currentLayers,
758 hw->getLayerStack(), dirtyRegion, opaqueRegion);
760 Vector< sp<LayerBase> > layersSortedByZ;
761 const size_t count = currentLayers.size();
762 for (size_t i=0 ; i<count ; i++) {
763 const sp<LayerBase>& layer(currentLayers[i]);
764 const Layer::State& s(layer->drawingState());
765 if (s.layerStack == hw->getLayerStack()) {
766 Region visibleRegion(tr.transform(layer->visibleRegion));
767 visibleRegion.andSelf(bounds);
768 if (!visibleRegion.isEmpty()) {
769 layersSortedByZ.add(layer);
773 hw->setVisibleLayersSortedByZ(layersSortedByZ);
774 hw->undefinedRegion.set(bounds);
775 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion));
776 hw->dirtyRegion.orSelf(dirtyRegion);
781 void SurfaceFlinger::setUpHWComposer() {
782 HWComposer& hwc(getHwComposer());
783 if (hwc.initCheck() == NO_ERROR) {
784 // build the h/w work list
785 const bool workListsDirty = mHwWorkListDirty;
786 mHwWorkListDirty = false;
787 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
788 sp<const DisplayDevice> hw(mDisplays[dpy]);
789 const int32_t id = hw->getHwcDisplayId();
791 const Vector< sp<LayerBase> >& currentLayers(
792 hw->getVisibleLayersSortedByZ());
793 const size_t count = currentLayers.size();
794 if (hwc.createWorkList(id, count) >= 0) {
795 HWComposer::LayerListIterator cur = hwc.begin(id);
796 const HWComposer::LayerListIterator end = hwc.end(id);
797 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) {
798 const sp<LayerBase>& layer(currentLayers[i]);
800 if (CC_UNLIKELY(workListsDirty)) {
801 layer->setGeometry(hw, *cur);
802 if (mDebugDisableHWC || mDebugRegion) {
808 * update the per-frame h/w composer data for each layer
809 * and build the transparent region of the FB
811 layer->setPerFrameData(hw, *cur);
816 status_t err = hwc.prepare();
817 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err));
821 void SurfaceFlinger::doComposition() {
823 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything);
824 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
825 const sp<DisplayDevice>& hw(mDisplays[dpy]);
827 // transform the dirty region into this screen's coordinate space
828 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything));
829 if (!dirtyRegion.isEmpty()) {
830 // repaint the framebuffer (if needed)
831 doDisplayComposition(hw, dirtyRegion);
833 hw->dirtyRegion.clear();
834 hw->flip(hw->swapRegion);
835 hw->swapRegion.clear();
837 // inform the h/w that we're done compositing
838 hw->compositionComplete();
843 void SurfaceFlinger::postFramebuffer()
847 const nsecs_t now = systemTime();
848 mDebugInSwapBuffers = now;
850 HWComposer& hwc(getHwComposer());
851 if (hwc.initCheck() == NO_ERROR) {
852 // FIXME: EGL spec says:
853 // "surface must be bound to the calling thread's current context,
854 // for the current rendering API."
855 DisplayDevice::makeCurrent(mEGLDisplay, getDefaultDisplayDevice(), mEGLContext);
859 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
860 sp<const DisplayDevice> hw(mDisplays[dpy]);
861 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ());
862 const size_t count = currentLayers.size();
863 int32_t id = hw->getHwcDisplayId();
864 if (id >=0 && hwc.initCheck() == NO_ERROR) {
865 HWComposer::LayerListIterator cur = hwc.begin(id);
866 const HWComposer::LayerListIterator end = hwc.end(id);
867 for (size_t i = 0; cur != end && i < count; ++i, ++cur) {
868 currentLayers[i]->onLayerDisplayed(hw, &*cur);
871 for (size_t i = 0; i < count; i++) {
872 currentLayers[i]->onLayerDisplayed(hw, NULL);
877 mLastSwapBufferTime = systemTime() - now;
878 mDebugInSwapBuffers = 0;
881 void SurfaceFlinger::handleTransaction(uint32_t transactionFlags)
885 Mutex::Autolock _l(mStateLock);
886 const nsecs_t now = systemTime();
887 mDebugInTransaction = now;
889 // Here we're guaranteed that some transaction flags are set
890 // so we can call handleTransactionLocked() unconditionally.
891 // We call getTransactionFlags(), which will also clear the flags,
892 // with mStateLock held to guarantee that mCurrentState won't change
893 // until the transaction is committed.
895 transactionFlags = getTransactionFlags(eTransactionMask);
896 handleTransactionLocked(transactionFlags);
898 mLastTransactionTime = systemTime() - now;
899 mDebugInTransaction = 0;
900 invalidateHwcGeometry();
901 // here the transaction has been committed
904 void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags)
906 const LayerVector& currentLayers(mCurrentState.layersSortedByZ);
907 const size_t count = currentLayers.size();
910 * Traversal of the children
911 * (perform the transaction for each of them if needed)
914 if (transactionFlags & eTraversalNeeded) {
915 for (size_t i=0 ; i<count ; i++) {
916 const sp<LayerBase>& layer = currentLayers[i];
917 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded);
918 if (!trFlags) continue;
920 const uint32_t flags = layer->doTransaction(0);
921 if (flags & Layer::eVisibleRegion)
922 mVisibleRegionsDirty = true;
927 * Perform display own transactions if needed
930 if (transactionFlags & eDisplayTransactionNeeded) {
931 // here we take advantage of Vector's copy-on-write semantics to
932 // improve performance by skipping the transaction entirely when
933 // know that the lists are identical
934 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays);
935 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays);
936 if (!curr.isIdenticalTo(draw)) {
937 mVisibleRegionsDirty = true;
938 const size_t cc = curr.size();
939 size_t dc = draw.size();
941 // find the displays that were removed
942 // (ie: in drawing state but not in current state)
943 // also handle displays that changed
944 // (ie: displays that are in both lists)
945 for (size_t i=0 ; i<dc ; i++) {
946 const ssize_t j = curr.indexOfKey(draw.keyAt(i));
948 // in drawing state but not in current state
949 if (!draw[i].isMainDisplay()) {
950 mDisplays.removeItem(draw.keyAt(i));
952 ALOGW("trying to remove the main display");
955 // this display is in both lists. see if something changed.
956 const DisplayDeviceState& state(curr[j]);
957 const wp<IBinder>& display(curr.keyAt(j));
958 if (state.surface->asBinder() != draw[i].surface->asBinder()) {
959 // changing the surface is like destroying and
960 // recreating the DisplayDevice, so we just remove it
961 // from the drawing state, so that it get re-added
963 mDisplays.removeItem(display);
964 mDrawingState.displays.removeItemsAt(i);
966 // at this point we must loop to the next item
970 const sp<DisplayDevice>& disp(getDisplayDevice(display));
972 if (state.layerStack != draw[i].layerStack) {
973 disp->setLayerStack(state.layerStack);
975 if ((state.orientation != draw[i].orientation)
976 || (state.viewport != draw[i].viewport)
977 || (state.frame != draw[i].frame))
979 disp->setProjection(state.orientation,
980 state.viewport, state.viewport);
986 // find displays that were added
987 // (ie: in current state but not in drawing state)
988 for (size_t i=0 ; i<cc ; i++) {
989 if (draw.indexOfKey(curr.keyAt(i)) < 0) {
990 const DisplayDeviceState& state(curr[i]);
991 if (state.surface != NULL) {
992 sp<SurfaceTextureClient> stc(
993 new SurfaceTextureClient(state.surface));
994 const wp<IBinder>& display(curr.keyAt(i));
995 sp<DisplayDevice> disp = new DisplayDevice(this,
996 state.type, display, stc, 0, mEGLConfig);
997 disp->setLayerStack(state.layerStack);
998 disp->setProjection(state.orientation,
999 state.viewport, state.viewport);
1000 mDisplays.add(display, disp);
1008 * Perform our own transaction if needed
1011 const LayerVector& previousLayers(mDrawingState.layersSortedByZ);
1012 if (currentLayers.size() > previousLayers.size()) {
1013 // layers have been added
1014 mVisibleRegionsDirty = true;
1017 // some layers might have been removed, so
1018 // we need to update the regions they're exposing.
1019 if (mLayersRemoved) {
1020 mLayersRemoved = false;
1021 mVisibleRegionsDirty = true;
1022 const size_t count = previousLayers.size();
1023 for (size_t i=0 ; i<count ; i++) {
1024 const sp<LayerBase>& layer(previousLayers[i]);
1025 if (currentLayers.indexOf(layer) < 0) {
1026 // this layer is not visible anymore
1027 // TODO: we could traverse the tree from front to back and
1028 // compute the actual visible region
1029 // TODO: we could cache the transformed region
1030 Layer::State front(layer->drawingState());
1031 Region visibleReg = front.transform.transform(
1032 Region(Rect(front.active.w, front.active.h)));
1033 invalidateLayerStack(front.layerStack, visibleReg);
1038 commitTransaction();
1041 void SurfaceFlinger::commitTransaction()
1043 if (!mLayersPendingRemoval.isEmpty()) {
1044 // Notify removed layers now that they can't be drawn from
1045 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) {
1046 mLayersPendingRemoval[i]->onRemoved();
1048 mLayersPendingRemoval.clear();
1051 mDrawingState = mCurrentState;
1052 mTransationPending = false;
1053 mTransactionCV.broadcast();
1056 void SurfaceFlinger::computeVisibleRegions(
1057 const LayerVector& currentLayers, uint32_t layerStack,
1058 Region& outDirtyRegion, Region& outOpaqueRegion)
1062 Region aboveOpaqueLayers;
1063 Region aboveCoveredLayers;
1066 outDirtyRegion.clear();
1068 size_t i = currentLayers.size();
1070 const sp<LayerBase>& layer = currentLayers[i];
1072 // start with the whole surface at its current location
1073 const Layer::State& s(layer->drawingState());
1075 // only consider the layers on the given later stack
1076 if (s.layerStack != layerStack)
1080 * opaqueRegion: area of a surface that is fully opaque.
1082 Region opaqueRegion;
1085 * visibleRegion: area of a surface that is visible on screen
1086 * and not fully transparent. This is essentially the layer's
1087 * footprint minus the opaque regions above it.
1088 * Areas covered by a translucent surface are considered visible.
1090 Region visibleRegion;
1093 * coveredRegion: area of a surface that is covered by all
1094 * visible regions above it (which includes the translucent areas).
1096 Region coveredRegion;
1099 // handle hidden surfaces by setting the visible region to empty
1100 if (CC_LIKELY(!(s.flags & layer_state_t::eLayerHidden) && s.alpha)) {
1101 const bool translucent = !layer->isOpaque();
1102 Rect bounds(layer->computeBounds());
1103 visibleRegion.set(bounds);
1104 if (!visibleRegion.isEmpty()) {
1105 // Remove the transparent area from the visible region
1107 Region transparentRegionScreen;
1108 const Transform tr(s.transform);
1109 if (tr.transformed()) {
1110 if (tr.preserveRects()) {
1111 // transform the transparent region
1112 transparentRegionScreen = tr.transform(s.transparentRegion);
1114 // transformation too complex, can't do the
1115 // transparent region optimization.
1116 transparentRegionScreen.clear();
1119 transparentRegionScreen = s.transparentRegion;
1121 visibleRegion.subtractSelf(transparentRegionScreen);
1124 // compute the opaque region
1125 const int32_t layerOrientation = s.transform.getOrientation();
1126 if (s.alpha==255 && !translucent &&
1127 ((layerOrientation & Transform::ROT_INVALID) == false)) {
1128 // the opaque region is the layer's footprint
1129 opaqueRegion = visibleRegion;
1134 // Clip the covered region to the visible region
1135 coveredRegion = aboveCoveredLayers.intersect(visibleRegion);
1137 // Update aboveCoveredLayers for next (lower) layer
1138 aboveCoveredLayers.orSelf(visibleRegion);
1140 // subtract the opaque region covered by the layers above us
1141 visibleRegion.subtractSelf(aboveOpaqueLayers);
1143 // compute this layer's dirty region
1144 if (layer->contentDirty) {
1145 // we need to invalidate the whole region
1146 dirty = visibleRegion;
1147 // as well, as the old visible region
1148 dirty.orSelf(layer->visibleRegion);
1149 layer->contentDirty = false;
1151 /* compute the exposed region:
1152 * the exposed region consists of two components:
1153 * 1) what's VISIBLE now and was COVERED before
1154 * 2) what's EXPOSED now less what was EXPOSED before
1156 * note that (1) is conservative, we start with the whole
1157 * visible region but only keep what used to be covered by
1158 * something -- which mean it may have been exposed.
1160 * (2) handles areas that were not covered by anything but got
1161 * exposed because of a resize.
1163 const Region newExposed = visibleRegion - coveredRegion;
1164 const Region oldVisibleRegion = layer->visibleRegion;
1165 const Region oldCoveredRegion = layer->coveredRegion;
1166 const Region oldExposed = oldVisibleRegion - oldCoveredRegion;
1167 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed);
1169 dirty.subtractSelf(aboveOpaqueLayers);
1171 // accumulate to the screen dirty region
1172 outDirtyRegion.orSelf(dirty);
1174 // Update aboveOpaqueLayers for next (lower) layer
1175 aboveOpaqueLayers.orSelf(opaqueRegion);
1177 // Store the visible region is screen space
1178 layer->setVisibleRegion(visibleRegion);
1179 layer->setCoveredRegion(coveredRegion);
1182 outOpaqueRegion = aboveOpaqueLayers;
1185 void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack,
1186 const Region& dirty) {
1187 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
1188 const sp<DisplayDevice>& hw(mDisplays[dpy]);
1189 if (hw->getLayerStack() == layerStack) {
1190 hw->dirtyRegion.orSelf(dirty);
1195 void SurfaceFlinger::handlePageFlip()
1199 bool visibleRegions = false;
1200 const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
1201 const size_t count = currentLayers.size();
1202 for (size_t i=0 ; i<count ; i++) {
1203 const sp<LayerBase>& layer(currentLayers[i]);
1204 const Region dirty(layer->latchBuffer(visibleRegions));
1205 Layer::State s(layer->drawingState());
1206 invalidateLayerStack(s.layerStack, dirty);
1209 mVisibleRegionsDirty |= visibleRegions;
1212 void SurfaceFlinger::invalidateHwcGeometry()
1214 mHwWorkListDirty = true;
1218 void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw,
1219 const Region& inDirtyRegion)
1221 Region dirtyRegion(inDirtyRegion);
1223 // compute the invalid region
1224 hw->swapRegion.orSelf(dirtyRegion);
1226 uint32_t flags = hw->getFlags();
1227 if (flags & DisplayDevice::SWAP_RECTANGLE) {
1228 // we can redraw only what's dirty, but since SWAP_RECTANGLE only
1229 // takes a rectangle, we must make sure to update that whole
1230 // rectangle in that case
1231 dirtyRegion.set(hw->swapRegion.bounds());
1233 if (flags & DisplayDevice::PARTIAL_UPDATES) {
1234 // We need to redraw the rectangle that will be updated
1235 // (pushed to the framebuffer).
1236 // This is needed because PARTIAL_UPDATES only takes one
1237 // rectangle instead of a region (see DisplayDevice::flip())
1238 dirtyRegion.set(hw->swapRegion.bounds());
1240 // we need to redraw everything (the whole screen)
1241 dirtyRegion.set(hw->bounds());
1242 hw->swapRegion = dirtyRegion;
1246 doComposeSurfaces(hw, dirtyRegion);
1248 // FIXME: we need to call eglSwapBuffers() on displays that have
1249 // GL composition and only on those.
1250 // however, currently hwc.commit() already does that for the main
1251 // display (if there is a hwc) and never for the other ones
1252 if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL ||
1253 getHwComposer().initCheck() != NO_ERROR) {
1254 // FIXME: EGL spec says:
1255 // "surface must be bound to the calling thread's current context,
1256 // for the current rendering API."
1257 eglSwapBuffers(mEGLDisplay, hw->getEGLSurface());
1260 // update the swap region and clear the dirty region
1261 hw->swapRegion.orSelf(dirtyRegion);
1264 void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty)
1266 const int32_t id = hw->getHwcDisplayId();
1267 HWComposer& hwc(getHwComposer());
1268 HWComposer::LayerListIterator cur = hwc.begin(id);
1269 const HWComposer::LayerListIterator end = hwc.end(id);
1271 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end);
1272 if (hasGlesComposition) {
1273 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext);
1275 // set the frame buffer
1276 glMatrixMode(GL_MODELVIEW);
1279 // Never touch the framebuffer if we don't have any framebuffer layers
1280 const bool hasHwcComposition = hwc.hasHwcComposition(id);
1281 if (hasHwcComposition) {
1282 // when using overlays, we assume a fully transparent framebuffer
1283 // NOTE: we could reduce how much we need to clear, for instance
1284 // remove where there are opaque FB layers. however, on some
1285 // GPUs doing a "clean slate" glClear might be more efficient.
1286 // We'll revisit later if needed.
1287 glClearColor(0, 0, 0, 0);
1288 glClear(GL_COLOR_BUFFER_BIT);
1290 const Region region(hw->undefinedRegion.intersect(dirty));
1291 // screen is already cleared here
1292 if (!region.isEmpty()) {
1293 // can happen with SurfaceView
1294 drawWormhole(hw, region);
1300 * and then, render the layers targeted at the framebuffer
1303 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ());
1304 const size_t count = layers.size();
1305 const Transform& tr = hw->getTransform();
1307 // we're using h/w composer
1308 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) {
1309 const sp<LayerBase>& layer(layers[i]);
1310 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion)));
1311 if (!clip.isEmpty()) {
1312 switch (cur->getCompositionType()) {
1314 if ((cur->getHints() & HWC_HINT_CLEAR_FB)
1316 && layer->isOpaque()
1317 && hasGlesComposition) {
1318 // never clear the very first layer since we're
1319 // guaranteed the FB is already cleared
1320 layer->clearWithOpenGL(hw, clip);
1324 case HWC_FRAMEBUFFER: {
1325 layer->draw(hw, clip);
1330 layer->setAcquireFence(hw, *cur);
1333 // we're not using h/w composer
1334 for (size_t i=0 ; i<count ; ++i) {
1335 const sp<LayerBase>& layer(layers[i]);
1336 const Region clip(dirty.intersect(
1337 tr.transform(layer->visibleRegion)));
1338 if (!clip.isEmpty()) {
1339 layer->draw(hw, clip);
1345 void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw,
1346 const Region& region) const
1348 glDisable(GL_TEXTURE_EXTERNAL_OES);
1349 glDisable(GL_TEXTURE_2D);
1350 glDisable(GL_BLEND);
1353 const int32_t height = hw->getHeight();
1354 Region::const_iterator it = region.begin();
1355 Region::const_iterator const end = region.end();
1357 const Rect& r = *it++;
1358 GLfloat vertices[][2] = {
1359 { r.left, height - r.top },
1360 { r.left, height - r.bottom },
1361 { r.right, height - r.bottom },
1362 { r.right, height - r.top }
1364 glVertexPointer(2, GL_FLOAT, 0, vertices);
1365 glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1369 ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client,
1370 const sp<LayerBaseClient>& lbc)
1372 // attach this layer to the client
1373 size_t name = client->attachLayer(lbc);
1375 // add this layer to the current state list
1376 Mutex::Autolock _l(mStateLock);
1377 mCurrentState.layersSortedByZ.add(lbc);
1379 return ssize_t(name);
1382 status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer)
1384 Mutex::Autolock _l(mStateLock);
1385 status_t err = purgatorizeLayer_l(layer);
1386 if (err == NO_ERROR)
1387 setTransactionFlags(eTransactionNeeded);
1391 status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase)
1393 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase);
1395 mLayersRemoved = true;
1398 return status_t(index);
1401 status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase)
1403 // First add the layer to the purgatory list, which makes sure it won't
1404 // go away, then remove it from the main list (through a transaction).
1405 ssize_t err = removeLayer_l(layerBase);
1407 mLayerPurgatory.add(layerBase);
1410 mLayersPendingRemoval.push(layerBase);
1412 // it's possible that we don't find a layer, because it might
1413 // have been destroyed already -- this is not technically an error
1414 // from the user because there is a race between Client::destroySurface(),
1415 // ~Client() and ~ISurface().
1416 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err;
1419 uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags)
1421 return android_atomic_release_load(&mTransactionFlags);
1424 uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags)
1426 return android_atomic_and(~flags, &mTransactionFlags) & flags;
1429 uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags)
1431 uint32_t old = android_atomic_or(flags, &mTransactionFlags);
1432 if ((old & flags)==0) { // wake the server up
1433 signalTransaction();
1438 void SurfaceFlinger::setTransactionState(
1439 const Vector<ComposerState>& state,
1440 const Vector<DisplayState>& displays,
1443 Mutex::Autolock _l(mStateLock);
1444 uint32_t transactionFlags = 0;
1446 size_t count = displays.size();
1447 for (size_t i=0 ; i<count ; i++) {
1448 const DisplayState& s(displays[i]);
1449 transactionFlags |= setDisplayStateLocked(s);
1452 count = state.size();
1453 for (size_t i=0 ; i<count ; i++) {
1454 const ComposerState& s(state[i]);
1455 sp<Client> client( static_cast<Client *>(s.client.get()) );
1456 transactionFlags |= setClientStateLocked(client, s.state);
1459 if (transactionFlags) {
1460 // this triggers the transaction
1461 setTransactionFlags(transactionFlags);
1463 // if this is a synchronous transaction, wait for it to take effect
1464 // before returning.
1465 if (flags & eSynchronous) {
1466 mTransationPending = true;
1468 while (mTransationPending) {
1469 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5));
1470 if (CC_UNLIKELY(err != NO_ERROR)) {
1471 // just in case something goes wrong in SF, return to the
1472 // called after a few seconds.
1473 ALOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!");
1474 mTransationPending = false;
1481 uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s)
1484 DisplayDeviceState& disp(mCurrentState.displays.editValueFor(s.token));
1485 if (disp.isValid()) {
1486 const uint32_t what = s.what;
1487 if (what & DisplayState::eSurfaceChanged) {
1488 if (disp.surface->asBinder() != s.surface->asBinder()) {
1489 disp.surface = s.surface;
1490 flags |= eDisplayTransactionNeeded;
1493 if (what & DisplayState::eLayerStackChanged) {
1494 if (disp.layerStack != s.layerStack) {
1495 disp.layerStack = s.layerStack;
1496 flags |= eDisplayTransactionNeeded;
1499 if (what & DisplayState::eDisplayProjectionChanged) {
1500 if (disp.orientation != s.orientation) {
1501 disp.orientation = s.orientation;
1502 flags |= eDisplayTransactionNeeded;
1504 if (disp.frame != s.frame) {
1505 disp.frame = s.frame;
1506 flags |= eDisplayTransactionNeeded;
1508 if (disp.viewport != s.viewport) {
1509 disp.viewport = s.viewport;
1510 flags |= eDisplayTransactionNeeded;
1517 uint32_t SurfaceFlinger::setClientStateLocked(
1518 const sp<Client>& client,
1519 const layer_state_t& s)
1522 sp<LayerBaseClient> layer(client->getLayerUser(s.surface));
1524 const uint32_t what = s.what;
1525 if (what & layer_state_t::ePositionChanged) {
1526 if (layer->setPosition(s.x, s.y))
1527 flags |= eTraversalNeeded;
1529 if (what & layer_state_t::eLayerChanged) {
1530 // NOTE: index needs to be calculated before we update the state
1531 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer);
1532 if (layer->setLayer(s.z)) {
1533 mCurrentState.layersSortedByZ.removeAt(idx);
1534 mCurrentState.layersSortedByZ.add(layer);
1535 // we need traversal (state changed)
1536 // AND transaction (list changed)
1537 flags |= eTransactionNeeded|eTraversalNeeded;
1540 if (what & layer_state_t::eSizeChanged) {
1541 if (layer->setSize(s.w, s.h)) {
1542 flags |= eTraversalNeeded;
1545 if (what & layer_state_t::eAlphaChanged) {
1546 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f)))
1547 flags |= eTraversalNeeded;
1549 if (what & layer_state_t::eMatrixChanged) {
1550 if (layer->setMatrix(s.matrix))
1551 flags |= eTraversalNeeded;
1553 if (what & layer_state_t::eTransparentRegionChanged) {
1554 if (layer->setTransparentRegionHint(s.transparentRegion))
1555 flags |= eTraversalNeeded;
1557 if (what & layer_state_t::eVisibilityChanged) {
1558 if (layer->setFlags(s.flags, s.mask))
1559 flags |= eTraversalNeeded;
1561 if (what & layer_state_t::eCropChanged) {
1562 if (layer->setCrop(s.crop))
1563 flags |= eTraversalNeeded;
1565 if (what & layer_state_t::eLayerStackChanged) {
1566 // NOTE: index needs to be calculated before we update the state
1567 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer);
1568 if (layer->setLayerStack(s.layerStack)) {
1569 mCurrentState.layersSortedByZ.removeAt(idx);
1570 mCurrentState.layersSortedByZ.add(layer);
1571 // we need traversal (state changed)
1572 // AND transaction (list changed)
1573 flags |= eTransactionNeeded|eTraversalNeeded;
1580 sp<ISurface> SurfaceFlinger::createLayer(
1581 ISurfaceComposerClient::surface_data_t* params,
1582 const String8& name,
1583 const sp<Client>& client,
1584 uint32_t w, uint32_t h, PixelFormat format,
1587 sp<LayerBaseClient> layer;
1588 sp<ISurface> surfaceHandle;
1590 if (int32_t(w|h) < 0) {
1591 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)",
1593 return surfaceHandle;
1596 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string());
1597 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) {
1598 case ISurfaceComposerClient::eFXSurfaceNormal:
1599 layer = createNormalLayer(client, w, h, flags, format);
1601 case ISurfaceComposerClient::eFXSurfaceBlur:
1602 case ISurfaceComposerClient::eFXSurfaceDim:
1603 layer = createDimLayer(client, w, h, flags);
1605 case ISurfaceComposerClient::eFXSurfaceScreenshot:
1606 layer = createScreenshotLayer(client, w, h, flags);
1611 layer->initStates(w, h, flags);
1612 layer->setName(name);
1613 ssize_t token = addClientLayer(client, layer);
1614 surfaceHandle = layer->getSurface();
1615 if (surfaceHandle != 0) {
1616 params->token = token;
1617 params->identity = layer->getIdentity();
1619 setTransactionFlags(eTransactionNeeded);
1622 return surfaceHandle;
1625 sp<Layer> SurfaceFlinger::createNormalLayer(
1626 const sp<Client>& client,
1627 uint32_t w, uint32_t h, uint32_t flags,
1628 PixelFormat& format)
1630 // initialize the surfaces
1632 case PIXEL_FORMAT_TRANSPARENT:
1633 case PIXEL_FORMAT_TRANSLUCENT:
1634 format = PIXEL_FORMAT_RGBA_8888;
1636 case PIXEL_FORMAT_OPAQUE:
1638 format = PIXEL_FORMAT_RGB_565;
1640 format = PIXEL_FORMAT_RGBX_8888;
1646 if (format == PIXEL_FORMAT_RGBX_8888)
1647 format = PIXEL_FORMAT_RGBA_8888;
1650 sp<Layer> layer = new Layer(this, client);
1651 status_t err = layer->setBuffers(w, h, format, flags);
1652 if (CC_LIKELY(err != NO_ERROR)) {
1653 ALOGE("createNormalLayer() failed (%s)", strerror(-err));
1659 sp<LayerDim> SurfaceFlinger::createDimLayer(
1660 const sp<Client>& client,
1661 uint32_t w, uint32_t h, uint32_t flags)
1663 sp<LayerDim> layer = new LayerDim(this, client);
1667 sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer(
1668 const sp<Client>& client,
1669 uint32_t w, uint32_t h, uint32_t flags)
1671 sp<LayerScreenshot> layer = new LayerScreenshot(this, client);
1675 status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, SurfaceID sid)
1678 * called by the window manager, when a surface should be marked for
1681 * The surface is removed from the current and drawing lists, but placed
1682 * in the purgatory queue, so it's not destroyed right-away (we need
1683 * to wait for all client's references to go away first).
1686 status_t err = NAME_NOT_FOUND;
1687 Mutex::Autolock _l(mStateLock);
1688 sp<LayerBaseClient> layer = client->getLayerUser(sid);
1691 err = purgatorizeLayer_l(layer);
1692 if (err == NO_ERROR) {
1693 setTransactionFlags(eTransactionNeeded);
1699 status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer)
1701 // called by ~ISurface() when all references are gone
1702 status_t err = NO_ERROR;
1703 sp<LayerBaseClient> l(layer.promote());
1705 Mutex::Autolock _l(mStateLock);
1706 err = removeLayer_l(l);
1707 if (err == NAME_NOT_FOUND) {
1708 // The surface wasn't in the current list, which means it was
1709 // removed already, which means it is in the purgatory,
1710 // and need to be removed from there.
1711 ssize_t idx = mLayerPurgatory.remove(l);
1713 "layer=%p is not in the purgatory list", l.get());
1715 ALOGE_IF(err<0 && err != NAME_NOT_FOUND,
1716 "error removing layer=%p (%s)", l.get(), strerror(-err));
1721 // ---------------------------------------------------------------------------
1723 void SurfaceFlinger::onInitializeDisplays() {
1724 // reset screen orientation
1725 Vector<ComposerState> state;
1726 Vector<DisplayState> displays;
1728 d.what = DisplayState::eDisplayProjectionChanged;
1729 d.token = mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY];
1730 d.orientation = DisplayState::eOrientationDefault;
1732 setTransactionState(state, displays, 0);
1734 // XXX: this should init default device to "unblank" and all other devices to "blank"
1738 void SurfaceFlinger::initializeDisplays() {
1739 class MessageScreenInitialized : public MessageBase {
1740 SurfaceFlinger* flinger;
1742 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { }
1743 virtual bool handler() {
1744 flinger->onInitializeDisplays();
1748 sp<MessageBase> msg = new MessageScreenInitialized(this);
1749 postMessageAsync(msg); // we may be called from main thread, use async message
1753 void SurfaceFlinger::onScreenAcquired() {
1754 ALOGD("Screen about to return, flinger = %p", this);
1755 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); // XXX: this should be per DisplayDevice
1756 getHwComposer().acquire();
1757 hw->acquireScreen();
1758 mEventThread->onScreenAcquired();
1759 mVisibleRegionsDirty = true;
1760 repaintEverything();
1763 void SurfaceFlinger::onScreenReleased() {
1764 ALOGD("About to give-up screen, flinger = %p", this);
1765 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); // XXX: this should be per DisplayDevice
1766 if (hw->isScreenAcquired()) {
1767 mEventThread->onScreenReleased();
1768 hw->releaseScreen();
1769 getHwComposer().release();
1770 // from this point on, SF will stop drawing
1774 void SurfaceFlinger::unblank() {
1775 class MessageScreenAcquired : public MessageBase {
1776 SurfaceFlinger* flinger;
1778 MessageScreenAcquired(SurfaceFlinger* flinger) : flinger(flinger) { }
1779 virtual bool handler() {
1780 flinger->onScreenAcquired();
1784 sp<MessageBase> msg = new MessageScreenAcquired(this);
1785 postMessageSync(msg);
1788 void SurfaceFlinger::blank() {
1789 class MessageScreenReleased : public MessageBase {
1790 SurfaceFlinger* flinger;
1792 MessageScreenReleased(SurfaceFlinger* flinger) : flinger(flinger) { }
1793 virtual bool handler() {
1794 flinger->onScreenReleased();
1798 sp<MessageBase> msg = new MessageScreenReleased(this);
1799 postMessageSync(msg);
1802 // ---------------------------------------------------------------------------
1804 status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args)
1806 const size_t SIZE = 4096;
1810 if (!PermissionCache::checkCallingPermission(sDump)) {
1811 snprintf(buffer, SIZE, "Permission Denial: "
1812 "can't dump SurfaceFlinger from pid=%d, uid=%d\n",
1813 IPCThreadState::self()->getCallingPid(),
1814 IPCThreadState::self()->getCallingUid());
1815 result.append(buffer);
1817 // Try to get the main lock, but don't insist if we can't
1818 // (this would indicate SF is stuck, but we want to be able to
1819 // print something in dumpsys).
1821 while (mStateLock.tryLock()<0 && --retry>=0) {
1824 const bool locked(retry >= 0);
1826 snprintf(buffer, SIZE,
1827 "SurfaceFlinger appears to be unresponsive, "
1828 "dumping anyways (no locks held)\n");
1829 result.append(buffer);
1832 bool dumpAll = true;
1834 size_t numArgs = args.size();
1836 if ((index < numArgs) &&
1837 (args[index] == String16("--list"))) {
1839 listLayersLocked(args, index, result, buffer, SIZE);
1843 if ((index < numArgs) &&
1844 (args[index] == String16("--latency"))) {
1846 dumpStatsLocked(args, index, result, buffer, SIZE);
1850 if ((index < numArgs) &&
1851 (args[index] == String16("--latency-clear"))) {
1853 clearStatsLocked(args, index, result, buffer, SIZE);
1859 dumpAllLocked(result, buffer, SIZE);
1863 mStateLock.unlock();
1866 write(fd, result.string(), result.size());
1870 void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index,
1871 String8& result, char* buffer, size_t SIZE) const
1873 const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
1874 const size_t count = currentLayers.size();
1875 for (size_t i=0 ; i<count ; i++) {
1876 const sp<LayerBase>& layer(currentLayers[i]);
1877 snprintf(buffer, SIZE, "%s\n", layer->getName().string());
1878 result.append(buffer);
1882 void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index,
1883 String8& result, char* buffer, size_t SIZE) const
1886 if (index < args.size()) {
1887 name = String8(args[index]);
1891 const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
1892 const size_t count = currentLayers.size();
1893 for (size_t i=0 ; i<count ; i++) {
1894 const sp<LayerBase>& layer(currentLayers[i]);
1895 if (name.isEmpty()) {
1896 snprintf(buffer, SIZE, "%s\n", layer->getName().string());
1897 result.append(buffer);
1899 if (name.isEmpty() || (name == layer->getName())) {
1900 layer->dumpStats(result, buffer, SIZE);
1905 void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index,
1906 String8& result, char* buffer, size_t SIZE) const
1909 if (index < args.size()) {
1910 name = String8(args[index]);
1914 const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
1915 const size_t count = currentLayers.size();
1916 for (size_t i=0 ; i<count ; i++) {
1917 const sp<LayerBase>& layer(currentLayers[i]);
1918 if (name.isEmpty() || (name == layer->getName())) {
1919 layer->clearStats();
1924 void SurfaceFlinger::dumpAllLocked(
1925 String8& result, char* buffer, size_t SIZE) const
1927 // figure out if we're stuck somewhere
1928 const nsecs_t now = systemTime();
1929 const nsecs_t inSwapBuffers(mDebugInSwapBuffers);
1930 const nsecs_t inTransaction(mDebugInTransaction);
1931 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0;
1932 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0;
1935 * Dump the visible layer list
1937 const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
1938 const size_t count = currentLayers.size();
1939 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count);
1940 result.append(buffer);
1941 for (size_t i=0 ; i<count ; i++) {
1942 const sp<LayerBase>& layer(currentLayers[i]);
1943 layer->dump(result, buffer, SIZE);
1947 * Dump the layers in the purgatory
1950 const size_t purgatorySize = mLayerPurgatory.size();
1951 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize);
1952 result.append(buffer);
1953 for (size_t i=0 ; i<purgatorySize ; i++) {
1954 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i));
1955 layer->shortDump(result, buffer, SIZE);
1959 * Dump Display state
1962 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
1963 const sp<const DisplayDevice>& hw(mDisplays[dpy]);
1964 snprintf(buffer, SIZE,
1965 "+ DisplayDevice[%u]\n"
1966 " id=%x, layerStack=%u, (%4dx%4d), orient=%2d (type=%08x), "
1967 "flips=%u, secure=%d, numLayers=%u, v:[%d,%d,%d,%d], f:[%d,%d,%d,%d]\n",
1969 hw->getDisplayType(), hw->getLayerStack(),
1970 hw->getWidth(), hw->getHeight(),
1971 hw->getOrientation(), hw->getTransform().getType(),
1972 hw->getPageFlipCount(),
1973 hw->getSecureLayerVisible(),
1974 hw->getVisibleLayersSortedByZ().size(),
1975 hw->getViewport().left, hw->getViewport().top, hw->getViewport().right, hw->getViewport().bottom,
1976 hw->getFrame().left, hw->getFrame().top, hw->getFrame().right, hw->getFrame().bottom);
1978 result.append(buffer);
1982 * Dump SurfaceFlinger global state
1985 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n");
1986 result.append(buffer);
1988 HWComposer& hwc(getHwComposer());
1989 sp<const DisplayDevice> hw(getDefaultDisplayDevice());
1990 const GLExtensions& extensions(GLExtensions::getInstance());
1991 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n",
1992 extensions.getVendor(),
1993 extensions.getRenderer(),
1994 extensions.getVersion());
1995 result.append(buffer);
1997 snprintf(buffer, SIZE, "EGL : %s\n",
1998 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID));
1999 result.append(buffer);
2001 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension());
2002 result.append(buffer);
2004 hw->undefinedRegion.dump(result, "undefinedRegion");
2005 snprintf(buffer, SIZE,
2006 " orientation=%d, canDraw=%d\n",
2007 hw->getOrientation(), hw->canDraw());
2008 result.append(buffer);
2009 snprintf(buffer, SIZE,
2010 " last eglSwapBuffers() time: %f us\n"
2011 " last transaction time : %f us\n"
2012 " transaction-flags : %08x\n"
2013 " refresh-rate : %f fps\n"
2016 mLastSwapBufferTime/1000.0,
2017 mLastTransactionTime/1000.0,
2019 1e9 / hwc.getRefreshPeriod(),
2022 result.append(buffer);
2024 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n",
2025 inSwapBuffersDuration/1000.0);
2026 result.append(buffer);
2028 snprintf(buffer, SIZE, " transaction time: %f us\n",
2029 inTransactionDuration/1000.0);
2030 result.append(buffer);
2035 mEventThread->dump(result, buffer, SIZE);
2038 * Dump HWComposer state
2040 snprintf(buffer, SIZE, "h/w composer state:\n");
2041 result.append(buffer);
2042 snprintf(buffer, SIZE, " h/w composer %s and %s\n",
2043 hwc.initCheck()==NO_ERROR ? "present" : "not present",
2044 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled");
2045 result.append(buffer);
2046 hwc.dump(result, buffer, SIZE, hw->getVisibleLayersSortedByZ());
2049 * Dump gralloc state
2051 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
2056 bool SurfaceFlinger::startDdmConnection()
2058 void* libddmconnection_dso =
2059 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW);
2060 if (!libddmconnection_dso) {
2063 void (*DdmConnection_start)(const char* name);
2064 DdmConnection_start =
2065 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start");
2066 if (!DdmConnection_start) {
2067 dlclose(libddmconnection_dso);
2070 (*DdmConnection_start)(getServiceName());
2074 status_t SurfaceFlinger::onTransact(
2075 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
2078 case CREATE_CONNECTION:
2079 case SET_TRANSACTION_STATE:
2084 // codes that require permission check
2085 IPCThreadState* ipc = IPCThreadState::self();
2086 const int pid = ipc->getCallingPid();
2087 const int uid = ipc->getCallingUid();
2088 if ((uid != AID_GRAPHICS) &&
2089 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) {
2090 ALOGE("Permission Denial: "
2091 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
2092 return PERMISSION_DENIED;
2096 case CAPTURE_SCREEN:
2098 // codes that require permission check
2099 IPCThreadState* ipc = IPCThreadState::self();
2100 const int pid = ipc->getCallingPid();
2101 const int uid = ipc->getCallingUid();
2102 if ((uid != AID_GRAPHICS) &&
2103 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) {
2104 ALOGE("Permission Denial: "
2105 "can't read framebuffer pid=%d, uid=%d", pid, uid);
2106 return PERMISSION_DENIED;
2112 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags);
2113 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) {
2114 CHECK_INTERFACE(ISurfaceComposer, data, reply);
2115 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) {
2116 IPCThreadState* ipc = IPCThreadState::self();
2117 const int pid = ipc->getCallingPid();
2118 const int uid = ipc->getCallingUid();
2119 ALOGE("Permission Denial: "
2120 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
2121 return PERMISSION_DENIED;
2125 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE
2126 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE
2128 case 1002: // SHOW_UPDATES
2129 n = data.readInt32();
2130 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1);
2131 invalidateHwcGeometry();
2132 repaintEverything();
2134 case 1004:{ // repaint everything
2135 repaintEverything();
2138 case 1005:{ // force transaction
2139 setTransactionFlags(
2141 eDisplayTransactionNeeded|
2145 case 1006:{ // send empty update
2149 case 1008: // toggle use of hw composer
2150 n = data.readInt32();
2151 mDebugDisableHWC = n ? 1 : 0;
2152 invalidateHwcGeometry();
2153 repaintEverything();
2155 case 1009: // toggle use of transform hint
2156 n = data.readInt32();
2157 mDebugDisableTransformHint = n ? 1 : 0;
2158 invalidateHwcGeometry();
2159 repaintEverything();
2161 case 1010: // interrogate.
2162 reply->writeInt32(0);
2163 reply->writeInt32(0);
2164 reply->writeInt32(mDebugRegion);
2165 reply->writeInt32(0);
2166 reply->writeInt32(mDebugDisableHWC);
2169 Mutex::Autolock _l(mStateLock);
2170 sp<const DisplayDevice> hw(getDefaultDisplayDevice());
2171 reply->writeInt32(hw->getPageFlipCount());
2179 void SurfaceFlinger::repaintEverything() {
2180 android_atomic_or(1, &mRepaintEverything);
2181 signalTransaction();
2184 // ---------------------------------------------------------------------------
2186 status_t SurfaceFlinger::renderScreenToTexture(uint32_t layerStack,
2187 GLuint* textureName, GLfloat* uOut, GLfloat* vOut)
2189 Mutex::Autolock _l(mStateLock);
2190 return renderScreenToTextureLocked(layerStack, textureName, uOut, vOut);
2193 status_t SurfaceFlinger::renderScreenToTextureLocked(uint32_t layerStack,
2194 GLuint* textureName, GLfloat* uOut, GLfloat* vOut)
2198 if (!GLExtensions::getInstance().haveFramebufferObject())
2199 return INVALID_OPERATION;
2201 // get screen geometry
2202 // FIXME: figure out what it means to have a screenshot texture w/ multi-display
2203 sp<const DisplayDevice> hw(getDefaultDisplayDevice());
2204 const uint32_t hw_w = hw->getWidth();
2205 const uint32_t hw_h = hw->getHeight();
2209 // make sure to clear all GL error flags
2210 while ( glGetError() != GL_NO_ERROR ) ;
2214 glGenTextures(1, &tname);
2215 glBindTexture(GL_TEXTURE_2D, tname);
2216 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2217 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2218 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
2219 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
2220 if (glGetError() != GL_NO_ERROR) {
2221 while ( glGetError() != GL_NO_ERROR ) ;
2222 GLint tw = (2 << (31 - clz(hw_w)));
2223 GLint th = (2 << (31 - clz(hw_h)));
2224 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
2225 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
2226 u = GLfloat(hw_w) / tw;
2227 v = GLfloat(hw_h) / th;
2229 glGenFramebuffersOES(1, &name);
2230 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name);
2231 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES,
2232 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0);
2234 // redraw the screen entirely...
2235 glDisable(GL_TEXTURE_EXTERNAL_OES);
2236 glDisable(GL_TEXTURE_2D);
2237 glClearColor(0,0,0,1);
2238 glClear(GL_COLOR_BUFFER_BIT);
2239 glMatrixMode(GL_MODELVIEW);
2241 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ());
2242 const size_t count = layers.size();
2243 for (size_t i=0 ; i<count ; ++i) {
2244 const sp<LayerBase>& layer(layers[i]);
2248 hw->compositionComplete();
2250 // back to main framebuffer
2251 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0);
2252 glDeleteFramebuffersOES(1, &name);
2254 *textureName = tname;
2260 // ---------------------------------------------------------------------------
2262 status_t SurfaceFlinger::captureScreenImplLocked(const sp<IBinder>& display,
2263 sp<IMemoryHeap>* heap,
2264 uint32_t* w, uint32_t* h, PixelFormat* f,
2265 uint32_t sw, uint32_t sh,
2266 uint32_t minLayerZ, uint32_t maxLayerZ)
2270 status_t result = PERMISSION_DENIED;
2272 if (!GLExtensions::getInstance().haveFramebufferObject()) {
2273 return INVALID_OPERATION;
2276 // get screen geometry
2277 sp<const DisplayDevice> hw(getDisplayDevice(display));
2278 const uint32_t hw_w = hw->getWidth();
2279 const uint32_t hw_h = hw->getHeight();
2281 // if we have secure windows on this display, never allow the screen capture
2282 if (hw->getSecureLayerVisible()) {
2283 ALOGW("FB is protected: PERMISSION_DENIED");
2284 return PERMISSION_DENIED;
2287 if ((sw > hw_w) || (sh > hw_h)) {
2288 ALOGE("size mismatch (%d, %d) > (%d, %d)", sw, sh, hw_w, hw_h);
2292 sw = (!sw) ? hw_w : sw;
2293 sh = (!sh) ? hw_h : sh;
2294 const size_t size = sw * sh * 4;
2295 const bool filtering = sw != hw_w || sh != hw_h;
2297 // ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d",
2298 // sw, sh, minLayerZ, maxLayerZ);
2300 // make sure to clear all GL error flags
2301 while ( glGetError() != GL_NO_ERROR ) ;
2305 glGenRenderbuffersOES(1, &tname);
2306 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname);
2307 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh);
2309 glGenFramebuffersOES(1, &name);
2310 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name);
2311 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES,
2312 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname);
2314 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES);
2316 if (status == GL_FRAMEBUFFER_COMPLETE_OES) {
2318 // invert everything, b/c glReadPixel() below will invert the FB
2319 glViewport(0, 0, sw, sh);
2320 glMatrixMode(GL_PROJECTION);
2323 glOrthof(0, hw_w, hw_h, 0, 0, 1);
2324 glMatrixMode(GL_MODELVIEW);
2326 // redraw the screen entirely...
2327 glClearColor(0,0,0,1);
2328 glClear(GL_COLOR_BUFFER_BIT);
2330 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ());
2331 const size_t count = layers.size();
2332 for (size_t i=0 ; i<count ; ++i) {
2333 const sp<LayerBase>& layer(layers[i]);
2334 const uint32_t z = layer->drawingState().z;
2335 if (z >= minLayerZ && z <= maxLayerZ) {
2336 if (filtering) layer->setFiltering(true);
2338 if (filtering) layer->setFiltering(false);
2342 // check for errors and return screen capture
2343 if (glGetError() != GL_NO_ERROR) {
2344 // error while rendering
2345 result = INVALID_OPERATION;
2347 // allocate shared memory large enough to hold the
2349 sp<MemoryHeapBase> base(
2350 new MemoryHeapBase(size, 0, "screen-capture") );
2351 void* const ptr = base->getBase();
2353 // capture the screen with glReadPixels()
2354 ScopedTrace _t(ATRACE_TAG, "glReadPixels");
2355 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr);
2356 if (glGetError() == GL_NO_ERROR) {
2360 *f = PIXEL_FORMAT_RGBA_8888;
2367 glViewport(0, 0, hw_w, hw_h);
2368 glMatrixMode(GL_PROJECTION);
2370 glMatrixMode(GL_MODELVIEW);
2375 // release FBO resources
2376 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0);
2377 glDeleteRenderbuffersOES(1, &tname);
2378 glDeleteFramebuffersOES(1, &name);
2380 hw->compositionComplete();
2382 // ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK");
2388 status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display,
2389 sp<IMemoryHeap>* heap,
2390 uint32_t* width, uint32_t* height, PixelFormat* format,
2391 uint32_t sw, uint32_t sh,
2392 uint32_t minLayerZ, uint32_t maxLayerZ)
2394 if (CC_UNLIKELY(display == 0))
2397 if (!GLExtensions::getInstance().haveFramebufferObject())
2398 return INVALID_OPERATION;
2400 class MessageCaptureScreen : public MessageBase {
2401 SurfaceFlinger* flinger;
2402 sp<IBinder> display;
2403 sp<IMemoryHeap>* heap;
2413 MessageCaptureScreen(SurfaceFlinger* flinger, const sp<IBinder>& display,
2414 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f,
2415 uint32_t sw, uint32_t sh,
2416 uint32_t minLayerZ, uint32_t maxLayerZ)
2417 : flinger(flinger), display(display),
2418 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh),
2419 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ),
2420 result(PERMISSION_DENIED)
2423 status_t getResult() const {
2426 virtual bool handler() {
2427 Mutex::Autolock _l(flinger->mStateLock);
2428 result = flinger->captureScreenImplLocked(display,
2429 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ);
2434 sp<MessageBase> msg = new MessageCaptureScreen(this,
2435 display, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ);
2436 status_t res = postMessageSync(msg);
2437 if (res == NO_ERROR) {
2438 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult();
2443 // ---------------------------------------------------------------------------
2445 SurfaceFlinger::LayerVector::LayerVector() {
2448 SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs)
2449 : SortedVector<sp<LayerBase> >(rhs) {
2452 int SurfaceFlinger::LayerVector::do_compare(const void* lhs,
2453 const void* rhs) const
2455 // sort layers per layer-stack, then by z-order and finally by sequence
2456 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs));
2457 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs));
2459 uint32_t ls = l->currentState().layerStack;
2460 uint32_t rs = r->currentState().layerStack;
2464 uint32_t lz = l->currentState().z;
2465 uint32_t rz = r->currentState().z;
2469 return l->sequence - r->sequence;
2472 // ---------------------------------------------------------------------------
2474 SurfaceFlinger::DisplayDeviceState::DisplayDeviceState()
2475 : type(DisplayDevice::DISPLAY_ID_INVALID) {
2478 SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type)
2479 : type(type), layerStack(0), orientation(0) {
2480 viewport.makeInvalid();
2481 frame.makeInvalid();
2484 // ---------------------------------------------------------------------------
2486 GraphicBufferAlloc::GraphicBufferAlloc() {}
2488 GraphicBufferAlloc::~GraphicBufferAlloc() {}
2490 sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h,
2491 PixelFormat format, uint32_t usage, status_t* error) {
2492 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage));
2493 status_t err = graphicBuffer->initCheck();
2495 if (err != 0 || graphicBuffer->handle == 0) {
2496 if (err == NO_MEMORY) {
2497 GraphicBuffer::dumpAllocationsToSystemLog();
2499 ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) "
2500 "failed (%s), handle=%p",
2501 w, h, strerror(-err), graphicBuffer->handle);
2504 return graphicBuffer;
2507 // ---------------------------------------------------------------------------
2509 }; // namespace android