SurfaceFlinger.cpp revision 439cf8576d3b846c0aa0944d84372259bf075d51 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
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
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
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.
15 */
16
17#include <stdlib.h>
18#include <stdio.h>
19#include <stdint.h>
20#include <unistd.h>
21#include <fcntl.h>
22#include <errno.h>
23#include <math.h>
24#include <limits.h>
25#include <sys/types.h>
26#include <sys/stat.h>
27#include <sys/ioctl.h>
28
29#include <cutils/log.h>
30#include <cutils/properties.h>
31
32#include <binder/IPCThreadState.h>
33#include <binder/IServiceManager.h>
34#include <binder/MemoryHeapBase.h>
35#include <binder/PermissionCache.h>
36
37#include <utils/String8.h>
38#include <utils/String16.h>
39#include <utils/StopWatch.h>
40
41#include <ui/GraphicBufferAllocator.h>
42#include <ui/GraphicLog.h>
43#include <ui/PixelFormat.h>
44
45#include <pixelflinger/pixelflinger.h>
46#include <GLES/gl.h>
47
48#include "clz.h"
49#include "GLExtensions.h"
50#include "DdmConnection.h"
51#include "Layer.h"
52#include "LayerDim.h"
53#include "LayerScreenshot.h"
54#include "SurfaceFlinger.h"
55
56#include "DisplayHardware/DisplayHardware.h"
57#include "DisplayHardware/HWComposer.h"
58
59#include <private/surfaceflinger/SharedBufferStack.h>
60
61/* ideally AID_GRAPHICS would be in a semi-public header
62 * or there would be a way to map a user/group name to its id
63 */
64#ifndef AID_GRAPHICS
65#define AID_GRAPHICS 1003
66#endif
67
68#define DISPLAY_COUNT       1
69
70namespace android {
71// ---------------------------------------------------------------------------
72
73const String16 sHardwareTest("android.permission.HARDWARE_TEST");
74const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER");
75const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER");
76const String16 sDump("android.permission.DUMP");
77
78// ---------------------------------------------------------------------------
79
80SurfaceFlinger::SurfaceFlinger()
81    :   BnSurfaceComposer(), Thread(false),
82        mTransactionFlags(0),
83        mTransationPending(false),
84        mLayersRemoved(false),
85        mBootTime(systemTime()),
86        mVisibleRegionsDirty(false),
87        mHwWorkListDirty(false),
88        mElectronBeamAnimationMode(0),
89        mDebugRegion(0),
90        mDebugBackground(0),
91        mDebugDDMS(0),
92        mDebugDisableHWC(0),
93        mDebugDisableTransformHint(0),
94        mDebugInSwapBuffers(0),
95        mLastSwapBufferTime(0),
96        mDebugInTransaction(0),
97        mLastTransactionTime(0),
98        mBootFinished(false),
99        mConsoleSignals(0),
100        mSecureFrameBuffer(0)
101{
102    init();
103}
104
105void SurfaceFlinger::init()
106{
107    LOGI("SurfaceFlinger is starting");
108
109    // debugging stuff...
110    char value[PROPERTY_VALUE_MAX];
111
112    property_get("debug.sf.showupdates", value, "0");
113    mDebugRegion = atoi(value);
114
115    property_get("debug.sf.showbackground", value, "0");
116    mDebugBackground = atoi(value);
117
118    property_get("debug.sf.ddms", value, "0");
119    mDebugDDMS = atoi(value);
120    if (mDebugDDMS) {
121        DdmConnection::start(getServiceName());
122    }
123
124    LOGI_IF(mDebugRegion,       "showupdates enabled");
125    LOGI_IF(mDebugBackground,   "showbackground enabled");
126    LOGI_IF(mDebugDDMS,         "DDMS debugging enabled");
127}
128
129SurfaceFlinger::~SurfaceFlinger()
130{
131    glDeleteTextures(1, &mWormholeTexName);
132}
133
134sp<IMemoryHeap> SurfaceFlinger::getCblk() const
135{
136    return mServerHeap;
137}
138
139sp<ISurfaceComposerClient> SurfaceFlinger::createConnection()
140{
141    sp<ISurfaceComposerClient> bclient;
142    sp<Client> client(new Client(this));
143    status_t err = client->initCheck();
144    if (err == NO_ERROR) {
145        bclient = client;
146    }
147    return bclient;
148}
149
150sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc()
151{
152    sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc());
153    return gba;
154}
155
156const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const
157{
158    LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy);
159    const GraphicPlane& plane(mGraphicPlanes[dpy]);
160    return plane;
161}
162
163GraphicPlane& SurfaceFlinger::graphicPlane(int dpy)
164{
165    return const_cast<GraphicPlane&>(
166        const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy));
167}
168
169void SurfaceFlinger::bootFinished()
170{
171    const nsecs_t now = systemTime();
172    const nsecs_t duration = now - mBootTime;
173    LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) );
174    mBootFinished = true;
175
176    // wait patiently for the window manager death
177    const String16 name("window");
178    sp<IBinder> window(defaultServiceManager()->getService(name));
179    if (window != 0) {
180        window->linkToDeath(this);
181    }
182
183    // stop boot animation
184    property_set("ctl.stop", "bootanim");
185}
186
187void SurfaceFlinger::binderDied(const wp<IBinder>& who)
188{
189    // the window manager died on us. prepare its eulogy.
190
191    // reset screen orientation
192    setOrientation(0, eOrientationDefault, 0);
193
194    // restart the boot-animation
195    property_set("ctl.start", "bootanim");
196}
197
198void SurfaceFlinger::onFirstRef()
199{
200    run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY);
201
202    // Wait for the main thread to be done with its initialization
203    mReadyToRunBarrier.wait();
204}
205
206static inline uint16_t pack565(int r, int g, int b) {
207    return (r<<11)|(g<<5)|b;
208}
209
210status_t SurfaceFlinger::readyToRun()
211{
212    LOGI(   "SurfaceFlinger's main thread ready to run. "
213            "Initializing graphics H/W...");
214
215    // we only support one display currently
216    int dpy = 0;
217
218    {
219        // initialize the main display
220        GraphicPlane& plane(graphicPlane(dpy));
221        DisplayHardware* const hw = new DisplayHardware(this, dpy);
222        plane.setDisplayHardware(hw);
223    }
224
225    // create the shared control-block
226    mServerHeap = new MemoryHeapBase(4096,
227            MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap");
228    LOGE_IF(mServerHeap==0, "can't create shared memory dealer");
229
230    mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase());
231    LOGE_IF(mServerCblk==0, "can't get to shared control block's address");
232
233    new(mServerCblk) surface_flinger_cblk_t;
234
235    // initialize primary screen
236    // (other display should be initialized in the same manner, but
237    // asynchronously, as they could come and go. None of this is supported
238    // yet).
239    const GraphicPlane& plane(graphicPlane(dpy));
240    const DisplayHardware& hw = plane.displayHardware();
241    const uint32_t w = hw.getWidth();
242    const uint32_t h = hw.getHeight();
243    const uint32_t f = hw.getFormat();
244    hw.makeCurrent();
245
246    // initialize the shared control block
247    mServerCblk->connected |= 1<<dpy;
248    display_cblk_t* dcblk = mServerCblk->displays + dpy;
249    memset(dcblk, 0, sizeof(display_cblk_t));
250    dcblk->w            = plane.getWidth();
251    dcblk->h            = plane.getHeight();
252    dcblk->format       = f;
253    dcblk->orientation  = ISurfaceComposer::eOrientationDefault;
254    dcblk->xdpi         = hw.getDpiX();
255    dcblk->ydpi         = hw.getDpiY();
256    dcblk->fps          = hw.getRefreshRate();
257    dcblk->density      = hw.getDensity();
258
259    // Initialize OpenGL|ES
260    glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
261    glPixelStorei(GL_PACK_ALIGNMENT, 4);
262    glEnableClientState(GL_VERTEX_ARRAY);
263    glEnable(GL_SCISSOR_TEST);
264    glShadeModel(GL_FLAT);
265    glDisable(GL_DITHER);
266    glDisable(GL_CULL_FACE);
267
268    const uint16_t g0 = pack565(0x0F,0x1F,0x0F);
269    const uint16_t g1 = pack565(0x17,0x2f,0x17);
270    const uint16_t wormholeTexData[4] = { g0, g1, g1, g0 };
271    glGenTextures(1, &mWormholeTexName);
272    glBindTexture(GL_TEXTURE_2D, mWormholeTexName);
273    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
274    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
275    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
276    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
277    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0,
278            GL_RGB, GL_UNSIGNED_SHORT_5_6_5, wormholeTexData);
279
280    const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) };
281    glGenTextures(1, &mProtectedTexName);
282    glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
283    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
284    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
285    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
286    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
287    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0,
288            GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData);
289
290    glViewport(0, 0, w, h);
291    glMatrixMode(GL_PROJECTION);
292    glLoadIdentity();
293    // put the origin in the left-bottom corner
294    glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h
295
296    mReadyToRunBarrier.open();
297
298    /*
299     *  We're now ready to accept clients...
300     */
301
302    // start boot animation
303    property_set("ctl.start", "bootanim");
304
305    return NO_ERROR;
306}
307
308// ----------------------------------------------------------------------------
309#if 0
310#pragma mark -
311#pragma mark Events Handler
312#endif
313
314void SurfaceFlinger::waitForEvent() {
315    mEventQueue.waitMessage();
316}
317
318void SurfaceFlinger::signalEvent() {
319    mEventQueue.invalidate();
320}
321
322bool SurfaceFlinger::authenticateSurfaceTexture(
323        const sp<ISurfaceTexture>& surfaceTexture) const {
324    Mutex::Autolock _l(mStateLock);
325    sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder());
326
327    // Check the visible layer list for the ISurface
328    const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
329    size_t count = currentLayers.size();
330    for (size_t i=0 ; i<count ; i++) {
331        const sp<LayerBase>& layer(currentLayers[i]);
332        sp<LayerBaseClient> lbc(layer->getLayerBaseClient());
333        if (lbc != NULL) {
334            wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder();
335            if (lbcBinder == surfaceTextureBinder) {
336                return true;
337            }
338        }
339    }
340
341    // Check the layers in the purgatory.  This check is here so that if a
342    // SurfaceTexture gets destroyed before all the clients are done using it,
343    // the error will not be reported as "surface XYZ is not authenticated", but
344    // will instead fail later on when the client tries to use the surface,
345    // which should be reported as "surface XYZ returned an -ENODEV".  The
346    // purgatorized layers are no less authentic than the visible ones, so this
347    // should not cause any harm.
348    size_t purgatorySize =  mLayerPurgatory.size();
349    for (size_t i=0 ; i<purgatorySize ; i++) {
350        const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i));
351        sp<LayerBaseClient> lbc(layer->getLayerBaseClient());
352        if (lbc != NULL) {
353            wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder();
354            if (lbcBinder == surfaceTextureBinder) {
355                return true;
356            }
357        }
358    }
359
360    return false;
361}
362
363status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg,
364        nsecs_t reltime, uint32_t flags)
365{
366    return mEventQueue.postMessage(msg, reltime, flags);
367}
368
369status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg,
370        nsecs_t reltime, uint32_t flags)
371{
372    status_t res = mEventQueue.postMessage(msg, reltime, flags);
373    if (res == NO_ERROR) {
374        msg->wait();
375    }
376    return res;
377}
378
379// ----------------------------------------------------------------------------
380#if 0
381#pragma mark -
382#pragma mark Main loop
383#endif
384
385bool SurfaceFlinger::threadLoop()
386{
387    waitForEvent();
388
389    // check for transactions
390    if (UNLIKELY(mConsoleSignals)) {
391        handleConsoleEvents();
392    }
393
394    // if we're in a global transaction, don't do anything.
395    const uint32_t mask = eTransactionNeeded | eTraversalNeeded;
396    uint32_t transactionFlags = peekTransactionFlags(mask);
397    if (UNLIKELY(transactionFlags)) {
398        handleTransaction(transactionFlags);
399    }
400
401    // post surfaces (if needed)
402    handlePageFlip();
403
404    if (mDirtyRegion.isEmpty()) {
405        // nothing new to do.
406        return true;
407    }
408
409    if (UNLIKELY(mHwWorkListDirty)) {
410        // build the h/w work list
411        handleWorkList();
412    }
413
414    const DisplayHardware& hw(graphicPlane(0).displayHardware());
415    if (LIKELY(hw.canDraw())) {
416        // repaint the framebuffer (if needed)
417
418        const int index = hw.getCurrentBufferIndex();
419        GraphicLog& logger(GraphicLog::getInstance());
420
421        logger.log(GraphicLog::SF_REPAINT, index);
422        handleRepaint();
423
424        // inform the h/w that we're done compositing
425        logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index);
426        hw.compositionComplete();
427
428        logger.log(GraphicLog::SF_SWAP_BUFFERS, index);
429        postFramebuffer();
430
431        logger.log(GraphicLog::SF_REPAINT_DONE, index);
432    } else {
433        // pretend we did the post
434        hw.compositionComplete();
435        usleep(16667); // 60 fps period
436    }
437    return true;
438}
439
440void SurfaceFlinger::postFramebuffer()
441{
442    // this should never happen. we do the flip anyways so we don't
443    // risk to cause a deadlock with hwc
444    LOGW_IF(mSwapRegion.isEmpty(), "mSwapRegion is empty");
445    const DisplayHardware& hw(graphicPlane(0).displayHardware());
446    const nsecs_t now = systemTime();
447    mDebugInSwapBuffers = now;
448    hw.flip(mSwapRegion);
449    mLastSwapBufferTime = systemTime() - now;
450    mDebugInSwapBuffers = 0;
451    mSwapRegion.clear();
452}
453
454void SurfaceFlinger::handleConsoleEvents()
455{
456    // something to do with the console
457    const DisplayHardware& hw = graphicPlane(0).displayHardware();
458
459    int what = android_atomic_and(0, &mConsoleSignals);
460    if (what & eConsoleAcquired) {
461        hw.acquireScreen();
462        // this is a temporary work-around, eventually this should be called
463        // by the power-manager
464        SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode);
465    }
466
467    if (what & eConsoleReleased) {
468        if (hw.isScreenAcquired()) {
469            hw.releaseScreen();
470        }
471    }
472
473    mDirtyRegion.set(hw.bounds());
474}
475
476void SurfaceFlinger::handleTransaction(uint32_t transactionFlags)
477{
478    Mutex::Autolock _l(mStateLock);
479    const nsecs_t now = systemTime();
480    mDebugInTransaction = now;
481
482    // Here we're guaranteed that some transaction flags are set
483    // so we can call handleTransactionLocked() unconditionally.
484    // We call getTransactionFlags(), which will also clear the flags,
485    // with mStateLock held to guarantee that mCurrentState won't change
486    // until the transaction is committed.
487
488    const uint32_t mask = eTransactionNeeded | eTraversalNeeded;
489    transactionFlags = getTransactionFlags(mask);
490    handleTransactionLocked(transactionFlags);
491
492    mLastTransactionTime = systemTime() - now;
493    mDebugInTransaction = 0;
494    invalidateHwcGeometry();
495    // here the transaction has been committed
496}
497
498void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags)
499{
500    const LayerVector& currentLayers(mCurrentState.layersSortedByZ);
501    const size_t count = currentLayers.size();
502
503    /*
504     * Traversal of the children
505     * (perform the transaction for each of them if needed)
506     */
507
508    const bool layersNeedTransaction = transactionFlags & eTraversalNeeded;
509    if (layersNeedTransaction) {
510        for (size_t i=0 ; i<count ; i++) {
511            const sp<LayerBase>& layer = currentLayers[i];
512            uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded);
513            if (!trFlags) continue;
514
515            const uint32_t flags = layer->doTransaction(0);
516            if (flags & Layer::eVisibleRegion)
517                mVisibleRegionsDirty = true;
518        }
519    }
520
521    /*
522     * Perform our own transaction if needed
523     */
524
525    if (transactionFlags & eTransactionNeeded) {
526        if (mCurrentState.orientation != mDrawingState.orientation) {
527            // the orientation has changed, recompute all visible regions
528            // and invalidate everything.
529
530            const int dpy = 0;
531            const int orientation = mCurrentState.orientation;
532            // Currently unused: const uint32_t flags = mCurrentState.orientationFlags;
533            GraphicPlane& plane(graphicPlane(dpy));
534            plane.setOrientation(orientation);
535
536            // update the shared control block
537            const DisplayHardware& hw(plane.displayHardware());
538            volatile display_cblk_t* dcblk = mServerCblk->displays + dpy;
539            dcblk->orientation = orientation;
540            dcblk->w = plane.getWidth();
541            dcblk->h = plane.getHeight();
542
543            mVisibleRegionsDirty = true;
544            mDirtyRegion.set(hw.bounds());
545        }
546
547        if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) {
548            // layers have been added
549            mVisibleRegionsDirty = true;
550        }
551
552        // some layers might have been removed, so
553        // we need to update the regions they're exposing.
554        if (mLayersRemoved) {
555            mLayersRemoved = false;
556            mVisibleRegionsDirty = true;
557            const LayerVector& previousLayers(mDrawingState.layersSortedByZ);
558            const size_t count = previousLayers.size();
559            for (size_t i=0 ; i<count ; i++) {
560                const sp<LayerBase>& layer(previousLayers[i]);
561                if (currentLayers.indexOf( layer ) < 0) {
562                    // this layer is not visible anymore
563                    mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen);
564                }
565            }
566        }
567    }
568
569    commitTransaction();
570}
571
572void SurfaceFlinger::computeVisibleRegions(
573    const LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion)
574{
575    const GraphicPlane& plane(graphicPlane(0));
576    const Transform& planeTransform(plane.transform());
577    const DisplayHardware& hw(plane.displayHardware());
578    const Region screenRegion(hw.bounds());
579
580    Region aboveOpaqueLayers;
581    Region aboveCoveredLayers;
582    Region dirty;
583
584    bool secureFrameBuffer = false;
585
586    size_t i = currentLayers.size();
587    while (i--) {
588        const sp<LayerBase>& layer = currentLayers[i];
589        layer->validateVisibility(planeTransform);
590
591        // start with the whole surface at its current location
592        const Layer::State& s(layer->drawingState());
593
594        /*
595         * opaqueRegion: area of a surface that is fully opaque.
596         */
597        Region opaqueRegion;
598
599        /*
600         * visibleRegion: area of a surface that is visible on screen
601         * and not fully transparent. This is essentially the layer's
602         * footprint minus the opaque regions above it.
603         * Areas covered by a translucent surface are considered visible.
604         */
605        Region visibleRegion;
606
607        /*
608         * coveredRegion: area of a surface that is covered by all
609         * visible regions above it (which includes the translucent areas).
610         */
611        Region coveredRegion;
612
613
614        // handle hidden surfaces by setting the visible region to empty
615        if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) {
616            const bool translucent = !layer->isOpaque();
617            const Rect bounds(layer->visibleBounds());
618            visibleRegion.set(bounds);
619            visibleRegion.andSelf(screenRegion);
620            if (!visibleRegion.isEmpty()) {
621                // Remove the transparent area from the visible region
622                if (translucent) {
623                    visibleRegion.subtractSelf(layer->transparentRegionScreen);
624                }
625
626                // compute the opaque region
627                const int32_t layerOrientation = layer->getOrientation();
628                if (s.alpha==255 && !translucent &&
629                        ((layerOrientation & Transform::ROT_INVALID) == false)) {
630                    // the opaque region is the layer's footprint
631                    opaqueRegion = visibleRegion;
632                }
633            }
634        }
635
636        // Clip the covered region to the visible region
637        coveredRegion = aboveCoveredLayers.intersect(visibleRegion);
638
639        // Update aboveCoveredLayers for next (lower) layer
640        aboveCoveredLayers.orSelf(visibleRegion);
641
642        // subtract the opaque region covered by the layers above us
643        visibleRegion.subtractSelf(aboveOpaqueLayers);
644
645        // compute this layer's dirty region
646        if (layer->contentDirty) {
647            // we need to invalidate the whole region
648            dirty = visibleRegion;
649            // as well, as the old visible region
650            dirty.orSelf(layer->visibleRegionScreen);
651            layer->contentDirty = false;
652        } else {
653            /* compute the exposed region:
654             *   the exposed region consists of two components:
655             *   1) what's VISIBLE now and was COVERED before
656             *   2) what's EXPOSED now less what was EXPOSED before
657             *
658             * note that (1) is conservative, we start with the whole
659             * visible region but only keep what used to be covered by
660             * something -- which mean it may have been exposed.
661             *
662             * (2) handles areas that were not covered by anything but got
663             * exposed because of a resize.
664             */
665            const Region newExposed = visibleRegion - coveredRegion;
666            const Region oldVisibleRegion = layer->visibleRegionScreen;
667            const Region oldCoveredRegion = layer->coveredRegionScreen;
668            const Region oldExposed = oldVisibleRegion - oldCoveredRegion;
669            dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed);
670        }
671        dirty.subtractSelf(aboveOpaqueLayers);
672
673        // accumulate to the screen dirty region
674        dirtyRegion.orSelf(dirty);
675
676        // Update aboveOpaqueLayers for next (lower) layer
677        aboveOpaqueLayers.orSelf(opaqueRegion);
678
679        // Store the visible region is screen space
680        layer->setVisibleRegion(visibleRegion);
681        layer->setCoveredRegion(coveredRegion);
682
683        // If a secure layer is partially visible, lock-down the screen!
684        if (layer->isSecure() && !visibleRegion.isEmpty()) {
685            secureFrameBuffer = true;
686        }
687    }
688
689    // invalidate the areas where a layer was removed
690    dirtyRegion.orSelf(mDirtyRegionRemovedLayer);
691    mDirtyRegionRemovedLayer.clear();
692
693    mSecureFrameBuffer = secureFrameBuffer;
694    opaqueRegion = aboveOpaqueLayers;
695}
696
697
698void SurfaceFlinger::commitTransaction()
699{
700    mDrawingState = mCurrentState;
701    mTransationPending = false;
702    mTransactionCV.broadcast();
703}
704
705void SurfaceFlinger::handlePageFlip()
706{
707    bool visibleRegions = mVisibleRegionsDirty;
708    const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
709    visibleRegions |= lockPageFlip(currentLayers);
710
711        const DisplayHardware& hw = graphicPlane(0).displayHardware();
712        const Region screenRegion(hw.bounds());
713        if (visibleRegions) {
714            Region opaqueRegion;
715            computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion);
716
717            /*
718             *  rebuild the visible layer list
719             */
720            const size_t count = currentLayers.size();
721            mVisibleLayersSortedByZ.clear();
722            mVisibleLayersSortedByZ.setCapacity(count);
723            for (size_t i=0 ; i<count ; i++) {
724                if (!currentLayers[i]->visibleRegionScreen.isEmpty())
725                    mVisibleLayersSortedByZ.add(currentLayers[i]);
726            }
727
728            mWormholeRegion = screenRegion.subtract(opaqueRegion);
729            mVisibleRegionsDirty = false;
730            invalidateHwcGeometry();
731        }
732
733    unlockPageFlip(currentLayers);
734
735    mDirtyRegion.orSelf(getAndClearInvalidateRegion());
736    mDirtyRegion.andSelf(screenRegion);
737}
738
739void SurfaceFlinger::invalidateHwcGeometry()
740{
741    mHwWorkListDirty = true;
742}
743
744bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers)
745{
746    bool recomputeVisibleRegions = false;
747    size_t count = currentLayers.size();
748    sp<LayerBase> const* layers = currentLayers.array();
749    for (size_t i=0 ; i<count ; i++) {
750        const sp<LayerBase>& layer(layers[i]);
751        layer->lockPageFlip(recomputeVisibleRegions);
752    }
753    return recomputeVisibleRegions;
754}
755
756void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers)
757{
758    const GraphicPlane& plane(graphicPlane(0));
759    const Transform& planeTransform(plane.transform());
760    size_t count = currentLayers.size();
761    sp<LayerBase> const* layers = currentLayers.array();
762    for (size_t i=0 ; i<count ; i++) {
763        const sp<LayerBase>& layer(layers[i]);
764        layer->unlockPageFlip(planeTransform, mDirtyRegion);
765    }
766}
767
768void SurfaceFlinger::handleWorkList()
769{
770    mHwWorkListDirty = false;
771    HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer());
772    if (hwc.initCheck() == NO_ERROR) {
773        const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ);
774        const size_t count = currentLayers.size();
775        hwc.createWorkList(count);
776        hwc_layer_t* const cur(hwc.getLayers());
777        for (size_t i=0 ; cur && i<count ; i++) {
778            currentLayers[i]->setGeometry(&cur[i]);
779            if (mDebugDisableHWC || mDebugRegion) {
780                cur[i].compositionType = HWC_FRAMEBUFFER;
781                cur[i].flags |= HWC_SKIP_LAYER;
782            }
783        }
784    }
785}
786
787void SurfaceFlinger::handleRepaint()
788{
789    // compute the invalid region
790    mSwapRegion.orSelf(mDirtyRegion);
791
792    if (UNLIKELY(mDebugRegion)) {
793        debugFlashRegions();
794    }
795
796    // set the frame buffer
797    const DisplayHardware& hw(graphicPlane(0).displayHardware());
798    glMatrixMode(GL_MODELVIEW);
799    glLoadIdentity();
800
801    uint32_t flags = hw.getFlags();
802    if ((flags & DisplayHardware::SWAP_RECTANGLE) ||
803        (flags & DisplayHardware::BUFFER_PRESERVED))
804    {
805        // we can redraw only what's dirty, but since SWAP_RECTANGLE only
806        // takes a rectangle, we must make sure to update that whole
807        // rectangle in that case
808        if (flags & DisplayHardware::SWAP_RECTANGLE) {
809            // TODO: we really should be able to pass a region to
810            // SWAP_RECTANGLE so that we don't have to redraw all this.
811            mDirtyRegion.set(mSwapRegion.bounds());
812        } else {
813            // in the BUFFER_PRESERVED case, obviously, we can update only
814            // what's needed and nothing more.
815            // NOTE: this is NOT a common case, as preserving the backbuffer
816            // is costly and usually involves copying the whole update back.
817        }
818    } else {
819        if (flags & DisplayHardware::PARTIAL_UPDATES) {
820            // We need to redraw the rectangle that will be updated
821            // (pushed to the framebuffer).
822            // This is needed because PARTIAL_UPDATES only takes one
823            // rectangle instead of a region (see DisplayHardware::flip())
824            mDirtyRegion.set(mSwapRegion.bounds());
825        } else {
826            // we need to redraw everything (the whole screen)
827            mDirtyRegion.set(hw.bounds());
828            mSwapRegion = mDirtyRegion;
829        }
830    }
831
832    setupHardwareComposer(mDirtyRegion);
833    composeSurfaces(mDirtyRegion);
834
835    // update the swap region and clear the dirty region
836    mSwapRegion.orSelf(mDirtyRegion);
837    mDirtyRegion.clear();
838}
839
840void SurfaceFlinger::setupHardwareComposer(Region& dirtyInOut)
841{
842    const DisplayHardware& hw(graphicPlane(0).displayHardware());
843    HWComposer& hwc(hw.getHwComposer());
844    hwc_layer_t* const cur(hwc.getLayers());
845    if (!cur) {
846        return;
847    }
848
849    const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ);
850    size_t count = layers.size();
851
852    LOGE_IF(hwc.getNumLayers() != count,
853            "HAL number of layers (%d) doesn't match surfaceflinger (%d)",
854            hwc.getNumLayers(), count);
855
856    // just to be extra-safe, use the smallest count
857    if (hwc.initCheck() == NO_ERROR) {
858        count = count < hwc.getNumLayers() ? count : hwc.getNumLayers();
859    }
860
861    /*
862     *  update the per-frame h/w composer data for each layer
863     *  and build the transparent region of the FB
864     */
865    for (size_t i=0 ; i<count ; i++) {
866        const sp<LayerBase>& layer(layers[i]);
867        layer->setPerFrameData(&cur[i]);
868    }
869    const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER);
870    status_t err = hwc.prepare();
871    LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err));
872
873    if (err == NO_ERROR) {
874        // what's happening here is tricky.
875        // we want to clear all the layers with the CLEAR_FB flags
876        // that are opaque.
877        // however, since some GPU are efficient at preserving
878        // the backbuffer, we want to take advantage of that so we do the
879        // clear only in the dirty region (other areas will be preserved
880        // on those GPUs).
881        //   NOTE: on non backbuffer preserving GPU, the dirty region
882        //   has already been expanded as needed, so the code is correct
883        //   there too.
884        //
885        // However, the content of the framebuffer cannot be trusted when
886        // we switch to/from FB/OVERLAY, in which case we need to
887        // expand the dirty region to those areas too.
888        //
889        // Note also that there is a special case when switching from
890        // "no layers in FB" to "some layers in FB", where we need to redraw
891        // the entire FB, since some areas might contain uninitialized
892        // data.
893        //
894        // Also we want to make sure to not clear areas that belong to
895        // layers above that won't redraw (we would just be erasing them),
896        // that is, we can't erase anything outside the dirty region.
897
898        Region transparent;
899
900        if (!fbLayerCount && hwc.getLayerCount(HWC_FRAMEBUFFER)) {
901            transparent.set(hw.getBounds());
902            dirtyInOut = transparent;
903        } else {
904            for (size_t i=0 ; i<count ; i++) {
905                const sp<LayerBase>& layer(layers[i]);
906                if ((cur[i].hints & HWC_HINT_CLEAR_FB) && layer->isOpaque()) {
907                    transparent.orSelf(layer->visibleRegionScreen);
908                }
909                bool isOverlay = (cur[i].compositionType != HWC_FRAMEBUFFER);
910                if (isOverlay != layer->isOverlay()) {
911                    // we transitioned to/from overlay, so add this layer
912                    // to the dirty region so the framebuffer can be either
913                    // cleared or redrawn.
914                    dirtyInOut.orSelf(layer->visibleRegionScreen);
915                }
916                layer->setOverlay(isOverlay);
917            }
918            // don't erase stuff outside the dirty region
919            transparent.andSelf(dirtyInOut);
920        }
921
922        /*
923         *  clear the area of the FB that need to be transparent
924         */
925        if (!transparent.isEmpty()) {
926            glClearColor(0,0,0,0);
927            Region::const_iterator it = transparent.begin();
928            Region::const_iterator const end = transparent.end();
929            const int32_t height = hw.getHeight();
930            while (it != end) {
931                const Rect& r(*it++);
932                const GLint sy = height - (r.top + r.height());
933                glScissor(r.left, sy, r.width(), r.height());
934                glClear(GL_COLOR_BUFFER_BIT);
935            }
936        }
937    }
938}
939
940void SurfaceFlinger::composeSurfaces(const Region& dirty)
941{
942    const DisplayHardware& hw(graphicPlane(0).displayHardware());
943    HWComposer& hwc(hw.getHwComposer());
944
945    const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER);
946    if (UNLIKELY(fbLayerCount && !mWormholeRegion.isEmpty())) {
947        // should never happen unless the window manager has a bug
948        // draw something...
949        drawWormhole();
950    }
951
952    /*
953     * and then, render the layers targeted at the framebuffer
954     */
955    hwc_layer_t* const cur(hwc.getLayers());
956    const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ);
957    size_t count = layers.size();
958    for (size_t i=0 ; i<count ; i++) {
959        if (cur && (cur[i].compositionType != HWC_FRAMEBUFFER)) {
960            continue;
961        }
962        const sp<LayerBase>& layer(layers[i]);
963        const Region clip(dirty.intersect(layer->visibleRegionScreen));
964        if (!clip.isEmpty()) {
965            layer->draw(clip);
966        }
967    }
968}
969
970void SurfaceFlinger::debugFlashRegions()
971{
972    const DisplayHardware& hw(graphicPlane(0).displayHardware());
973    const uint32_t flags = hw.getFlags();
974    const int32_t height = hw.getHeight();
975    if (mSwapRegion.isEmpty()) {
976        return;
977    }
978
979    if (!((flags & DisplayHardware::SWAP_RECTANGLE) ||
980            (flags & DisplayHardware::BUFFER_PRESERVED))) {
981        const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ?
982                mDirtyRegion.bounds() : hw.bounds());
983        composeSurfaces(repaint);
984    }
985
986    glDisable(GL_TEXTURE_EXTERNAL_OES);
987    glDisable(GL_TEXTURE_2D);
988    glDisable(GL_BLEND);
989    glDisable(GL_SCISSOR_TEST);
990
991    static int toggle = 0;
992    toggle = 1 - toggle;
993    if (toggle) {
994        glColor4f(1, 0, 1, 1);
995    } else {
996        glColor4f(1, 1, 0, 1);
997    }
998
999    Region::const_iterator it = mDirtyRegion.begin();
1000    Region::const_iterator const end = mDirtyRegion.end();
1001    while (it != end) {
1002        const Rect& r = *it++;
1003        GLfloat vertices[][2] = {
1004                { r.left,  height - r.top },
1005                { r.left,  height - r.bottom },
1006                { r.right, height - r.bottom },
1007                { r.right, height - r.top }
1008        };
1009        glVertexPointer(2, GL_FLOAT, 0, vertices);
1010        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1011    }
1012
1013    hw.flip(mSwapRegion);
1014
1015    if (mDebugRegion > 1)
1016        usleep(mDebugRegion * 1000);
1017
1018    glEnable(GL_SCISSOR_TEST);
1019}
1020
1021void SurfaceFlinger::drawWormhole() const
1022{
1023    const Region region(mWormholeRegion.intersect(mDirtyRegion));
1024    if (region.isEmpty())
1025        return;
1026
1027    const DisplayHardware& hw(graphicPlane(0).displayHardware());
1028    const int32_t width = hw.getWidth();
1029    const int32_t height = hw.getHeight();
1030
1031    if (LIKELY(!mDebugBackground)) {
1032        glClearColor(0,0,0,0);
1033        Region::const_iterator it = region.begin();
1034        Region::const_iterator const end = region.end();
1035        while (it != end) {
1036            const Rect& r = *it++;
1037            const GLint sy = height - (r.top + r.height());
1038            glScissor(r.left, sy, r.width(), r.height());
1039            glClear(GL_COLOR_BUFFER_BIT);
1040        }
1041    } else {
1042        const GLshort vertices[][2] = { { 0, 0 }, { width, 0 },
1043                { width, height }, { 0, height }  };
1044        const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 },  { 1, 1 }, { 0, 1 } };
1045
1046        glVertexPointer(2, GL_SHORT, 0, vertices);
1047        glTexCoordPointer(2, GL_SHORT, 0, tcoords);
1048        glEnableClientState(GL_TEXTURE_COORD_ARRAY);
1049
1050        glDisable(GL_TEXTURE_EXTERNAL_OES);
1051        glEnable(GL_TEXTURE_2D);
1052        glBindTexture(GL_TEXTURE_2D, mWormholeTexName);
1053        glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1054        glMatrixMode(GL_TEXTURE);
1055        glLoadIdentity();
1056
1057        glDisable(GL_BLEND);
1058
1059        glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1);
1060        Region::const_iterator it = region.begin();
1061        Region::const_iterator const end = region.end();
1062        while (it != end) {
1063            const Rect& r = *it++;
1064            const GLint sy = height - (r.top + r.height());
1065            glScissor(r.left, sy, r.width(), r.height());
1066            glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1067        }
1068        glDisableClientState(GL_TEXTURE_COORD_ARRAY);
1069        glDisable(GL_TEXTURE_2D);
1070        glLoadIdentity();
1071        glMatrixMode(GL_MODELVIEW);
1072    }
1073}
1074
1075void SurfaceFlinger::debugShowFPS() const
1076{
1077    static int mFrameCount;
1078    static int mLastFrameCount = 0;
1079    static nsecs_t mLastFpsTime = 0;
1080    static float mFps = 0;
1081    mFrameCount++;
1082    nsecs_t now = systemTime();
1083    nsecs_t diff = now - mLastFpsTime;
1084    if (diff > ms2ns(250)) {
1085        mFps =  ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff;
1086        mLastFpsTime = now;
1087        mLastFrameCount = mFrameCount;
1088    }
1089    // XXX: mFPS has the value we want
1090 }
1091
1092status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer)
1093{
1094    Mutex::Autolock _l(mStateLock);
1095    addLayer_l(layer);
1096    setTransactionFlags(eTransactionNeeded|eTraversalNeeded);
1097    return NO_ERROR;
1098}
1099
1100status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer)
1101{
1102    ssize_t i = mCurrentState.layersSortedByZ.add(layer);
1103    return (i < 0) ? status_t(i) : status_t(NO_ERROR);
1104}
1105
1106ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client,
1107        const sp<LayerBaseClient>& lbc)
1108{
1109    // attach this layer to the client
1110    size_t name = client->attachLayer(lbc);
1111
1112    Mutex::Autolock _l(mStateLock);
1113
1114    // add this layer to the current state list
1115    addLayer_l(lbc);
1116
1117    return ssize_t(name);
1118}
1119
1120status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer)
1121{
1122    Mutex::Autolock _l(mStateLock);
1123    status_t err = purgatorizeLayer_l(layer);
1124    if (err == NO_ERROR)
1125        setTransactionFlags(eTransactionNeeded);
1126    return err;
1127}
1128
1129status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase)
1130{
1131    sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient());
1132    if (lbc != 0) {
1133        mLayerMap.removeItem( lbc->getSurfaceBinder() );
1134    }
1135    ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase);
1136    if (index >= 0) {
1137        mLayersRemoved = true;
1138        return NO_ERROR;
1139    }
1140    return status_t(index);
1141}
1142
1143status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase)
1144{
1145    // First add the layer to the purgatory list, which makes sure it won't
1146    // go away, then remove it from the main list (through a transaction).
1147    ssize_t err = removeLayer_l(layerBase);
1148    if (err >= 0) {
1149        mLayerPurgatory.add(layerBase);
1150    }
1151
1152    layerBase->onRemoved();
1153
1154    // it's possible that we don't find a layer, because it might
1155    // have been destroyed already -- this is not technically an error
1156    // from the user because there is a race between Client::destroySurface(),
1157    // ~Client() and ~ISurface().
1158    return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err;
1159}
1160
1161status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer)
1162{
1163    layer->forceVisibilityTransaction();
1164    setTransactionFlags(eTraversalNeeded);
1165    return NO_ERROR;
1166}
1167
1168uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags)
1169{
1170    return android_atomic_release_load(&mTransactionFlags);
1171}
1172
1173uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags)
1174{
1175    return android_atomic_and(~flags, &mTransactionFlags) & flags;
1176}
1177
1178uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags)
1179{
1180    uint32_t old = android_atomic_or(flags, &mTransactionFlags);
1181    if ((old & flags)==0) { // wake the server up
1182        signalEvent();
1183    }
1184    return old;
1185}
1186
1187
1188void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state,
1189        int orientation, uint32_t flags) {
1190    Mutex::Autolock _l(mStateLock);
1191
1192    uint32_t transactionFlags = 0;
1193    if (mCurrentState.orientation != orientation) {
1194        if (uint32_t(orientation)<=eOrientation270 || orientation==42) {
1195            mCurrentState.orientation = orientation;
1196            transactionFlags |= eTransactionNeeded;
1197        } else if (orientation != eOrientationUnchanged) {
1198            LOGW("setTransactionState: ignoring unrecognized orientation: %d",
1199                    orientation);
1200        }
1201    }
1202
1203    const size_t count = state.size();
1204    for (size_t i=0 ; i<count ; i++) {
1205        const ComposerState& s(state[i]);
1206        sp<Client> client( static_cast<Client *>(s.client.get()) );
1207        transactionFlags |= setClientStateLocked(client, s.state);
1208    }
1209
1210    if (transactionFlags) {
1211        // this triggers the transaction
1212        setTransactionFlags(transactionFlags);
1213
1214        // if this is a synchronous transaction, wait for it to take effect
1215        // before returning.
1216        if (flags & eSynchronous) {
1217            mTransationPending = true;
1218        }
1219        while (mTransationPending) {
1220            status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5));
1221            if (CC_UNLIKELY(err != NO_ERROR)) {
1222                // just in case something goes wrong in SF, return to the
1223                // called after a few seconds.
1224                LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!");
1225                mTransationPending = false;
1226                break;
1227            }
1228        }
1229    }
1230}
1231
1232int SurfaceFlinger::setOrientation(DisplayID dpy,
1233        int orientation, uint32_t flags)
1234{
1235    if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
1236        return BAD_VALUE;
1237
1238    Mutex::Autolock _l(mStateLock);
1239    if (mCurrentState.orientation != orientation) {
1240        if (uint32_t(orientation)<=eOrientation270 || orientation==42) {
1241            mCurrentState.orientationFlags = flags;
1242            mCurrentState.orientation = orientation;
1243            setTransactionFlags(eTransactionNeeded);
1244            mTransactionCV.wait(mStateLock);
1245        } else {
1246            orientation = BAD_VALUE;
1247        }
1248    }
1249    return orientation;
1250}
1251
1252sp<ISurface> SurfaceFlinger::createSurface(
1253        ISurfaceComposerClient::surface_data_t* params,
1254        const String8& name,
1255        const sp<Client>& client,
1256        DisplayID d, uint32_t w, uint32_t h, PixelFormat format,
1257        uint32_t flags)
1258{
1259    sp<LayerBaseClient> layer;
1260    sp<ISurface> surfaceHandle;
1261
1262    if (int32_t(w|h) < 0) {
1263        LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)",
1264                int(w), int(h));
1265        return surfaceHandle;
1266    }
1267
1268    //LOGD("createSurface for pid %d (%d x %d)", pid, w, h);
1269    sp<Layer> normalLayer;
1270    switch (flags & eFXSurfaceMask) {
1271        case eFXSurfaceNormal:
1272            normalLayer = createNormalSurface(client, d, w, h, flags, format);
1273            layer = normalLayer;
1274            break;
1275        case eFXSurfaceBlur:
1276            // for now we treat Blur as Dim, until we can implement it
1277            // efficiently.
1278        case eFXSurfaceDim:
1279            layer = createDimSurface(client, d, w, h, flags);
1280            break;
1281        case eFXSurfaceScreenshot:
1282            layer = createScreenshotSurface(client, d, w, h, flags);
1283            break;
1284    }
1285
1286    if (layer != 0) {
1287        layer->initStates(w, h, flags);
1288        layer->setName(name);
1289        ssize_t token = addClientLayer(client, layer);
1290
1291        surfaceHandle = layer->getSurface();
1292        if (surfaceHandle != 0) {
1293            params->token = token;
1294            params->identity = layer->getIdentity();
1295            if (normalLayer != 0) {
1296                Mutex::Autolock _l(mStateLock);
1297                mLayerMap.add(layer->getSurfaceBinder(), normalLayer);
1298            }
1299        }
1300
1301        setTransactionFlags(eTransactionNeeded);
1302    }
1303
1304    return surfaceHandle;
1305}
1306
1307sp<Layer> SurfaceFlinger::createNormalSurface(
1308        const sp<Client>& client, DisplayID display,
1309        uint32_t w, uint32_t h, uint32_t flags,
1310        PixelFormat& format)
1311{
1312    // initialize the surfaces
1313    switch (format) { // TODO: take h/w into account
1314    case PIXEL_FORMAT_TRANSPARENT:
1315    case PIXEL_FORMAT_TRANSLUCENT:
1316        format = PIXEL_FORMAT_RGBA_8888;
1317        break;
1318    case PIXEL_FORMAT_OPAQUE:
1319#ifdef NO_RGBX_8888
1320        format = PIXEL_FORMAT_RGB_565;
1321#else
1322        format = PIXEL_FORMAT_RGBX_8888;
1323#endif
1324        break;
1325    }
1326
1327#ifdef NO_RGBX_8888
1328    if (format == PIXEL_FORMAT_RGBX_8888)
1329        format = PIXEL_FORMAT_RGBA_8888;
1330#endif
1331
1332    sp<Layer> layer = new Layer(this, display, client);
1333    status_t err = layer->setBuffers(w, h, format, flags);
1334    if (LIKELY(err != NO_ERROR)) {
1335        LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err));
1336        layer.clear();
1337    }
1338    return layer;
1339}
1340
1341sp<LayerDim> SurfaceFlinger::createDimSurface(
1342        const sp<Client>& client, DisplayID display,
1343        uint32_t w, uint32_t h, uint32_t flags)
1344{
1345    sp<LayerDim> layer = new LayerDim(this, display, client);
1346    return layer;
1347}
1348
1349sp<LayerScreenshot> SurfaceFlinger::createScreenshotSurface(
1350        const sp<Client>& client, DisplayID display,
1351        uint32_t w, uint32_t h, uint32_t flags)
1352{
1353    sp<LayerScreenshot> layer = new LayerScreenshot(this, display, client);
1354    return layer;
1355}
1356
1357status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid)
1358{
1359    /*
1360     * called by the window manager, when a surface should be marked for
1361     * destruction.
1362     *
1363     * The surface is removed from the current and drawing lists, but placed
1364     * in the purgatory queue, so it's not destroyed right-away (we need
1365     * to wait for all client's references to go away first).
1366     */
1367
1368    status_t err = NAME_NOT_FOUND;
1369    Mutex::Autolock _l(mStateLock);
1370    sp<LayerBaseClient> layer = client->getLayerUser(sid);
1371    if (layer != 0) {
1372        err = purgatorizeLayer_l(layer);
1373        if (err == NO_ERROR) {
1374            setTransactionFlags(eTransactionNeeded);
1375        }
1376    }
1377    return err;
1378}
1379
1380status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer)
1381{
1382    // called by ~ISurface() when all references are gone
1383    status_t err = NO_ERROR;
1384    sp<LayerBaseClient> l(layer.promote());
1385    if (l != NULL) {
1386        Mutex::Autolock _l(mStateLock);
1387        err = removeLayer_l(l);
1388        if (err == NAME_NOT_FOUND) {
1389            // The surface wasn't in the current list, which means it was
1390            // removed already, which means it is in the purgatory,
1391            // and need to be removed from there.
1392            ssize_t idx = mLayerPurgatory.remove(l);
1393            LOGE_IF(idx < 0,
1394                    "layer=%p is not in the purgatory list", l.get());
1395        }
1396        LOGE_IF(err<0 && err != NAME_NOT_FOUND,
1397                "error removing layer=%p (%s)", l.get(), strerror(-err));
1398    }
1399    return err;
1400}
1401
1402uint32_t SurfaceFlinger::setClientStateLocked(
1403        const sp<Client>& client,
1404        const layer_state_t& s)
1405{
1406    uint32_t flags = 0;
1407    sp<LayerBaseClient> layer(client->getLayerUser(s.surface));
1408    if (layer != 0) {
1409        const uint32_t what = s.what;
1410        if (what & ePositionChanged) {
1411            if (layer->setPosition(s.x, s.y))
1412                flags |= eTraversalNeeded;
1413        }
1414        if (what & eLayerChanged) {
1415            ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer);
1416            if (layer->setLayer(s.z)) {
1417                mCurrentState.layersSortedByZ.removeAt(idx);
1418                mCurrentState.layersSortedByZ.add(layer);
1419                // we need traversal (state changed)
1420                // AND transaction (list changed)
1421                flags |= eTransactionNeeded|eTraversalNeeded;
1422            }
1423        }
1424        if (what & eSizeChanged) {
1425            if (layer->setSize(s.w, s.h)) {
1426                flags |= eTraversalNeeded;
1427            }
1428        }
1429        if (what & eAlphaChanged) {
1430            if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f)))
1431                flags |= eTraversalNeeded;
1432        }
1433        if (what & eMatrixChanged) {
1434            if (layer->setMatrix(s.matrix))
1435                flags |= eTraversalNeeded;
1436        }
1437        if (what & eTransparentRegionChanged) {
1438            if (layer->setTransparentRegionHint(s.transparentRegion))
1439                flags |= eTraversalNeeded;
1440        }
1441        if (what & eVisibilityChanged) {
1442            if (layer->setFlags(s.flags, s.mask))
1443                flags |= eTraversalNeeded;
1444        }
1445    }
1446    return flags;
1447}
1448
1449void SurfaceFlinger::screenReleased(int dpy)
1450{
1451    // this may be called by a signal handler, we can't do too much in here
1452    android_atomic_or(eConsoleReleased, &mConsoleSignals);
1453    signalEvent();
1454}
1455
1456void SurfaceFlinger::screenAcquired(int dpy)
1457{
1458    // this may be called by a signal handler, we can't do too much in here
1459    android_atomic_or(eConsoleAcquired, &mConsoleSignals);
1460    signalEvent();
1461}
1462
1463status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args)
1464{
1465    const size_t SIZE = 4096;
1466    char buffer[SIZE];
1467    String8 result;
1468
1469    if (!PermissionCache::checkCallingPermission(sDump)) {
1470        snprintf(buffer, SIZE, "Permission Denial: "
1471                "can't dump SurfaceFlinger from pid=%d, uid=%d\n",
1472                IPCThreadState::self()->getCallingPid(),
1473                IPCThreadState::self()->getCallingUid());
1474        result.append(buffer);
1475    } else {
1476
1477        // figure out if we're stuck somewhere
1478        const nsecs_t now = systemTime();
1479        const nsecs_t inSwapBuffers(mDebugInSwapBuffers);
1480        const nsecs_t inTransaction(mDebugInTransaction);
1481        nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0;
1482        nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0;
1483
1484        // Try to get the main lock, but don't insist if we can't
1485        // (this would indicate SF is stuck, but we want to be able to
1486        // print something in dumpsys).
1487        int retry = 3;
1488        while (mStateLock.tryLock()<0 && --retry>=0) {
1489            usleep(1000000);
1490        }
1491        const bool locked(retry >= 0);
1492        if (!locked) {
1493            snprintf(buffer, SIZE,
1494                    "SurfaceFlinger appears to be unresponsive, "
1495                    "dumping anyways (no locks held)\n");
1496            result.append(buffer);
1497        }
1498
1499        /*
1500         * Dump the visible layer list
1501         */
1502        const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
1503        const size_t count = currentLayers.size();
1504        snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count);
1505        result.append(buffer);
1506        for (size_t i=0 ; i<count ; i++) {
1507            const sp<LayerBase>& layer(currentLayers[i]);
1508            layer->dump(result, buffer, SIZE);
1509            const Layer::State& s(layer->drawingState());
1510            s.transparentRegion.dump(result, "transparentRegion");
1511            layer->transparentRegionScreen.dump(result, "transparentRegionScreen");
1512            layer->visibleRegionScreen.dump(result, "visibleRegionScreen");
1513        }
1514
1515        /*
1516         * Dump the layers in the purgatory
1517         */
1518
1519        const size_t purgatorySize =  mLayerPurgatory.size();
1520        snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize);
1521        result.append(buffer);
1522        for (size_t i=0 ; i<purgatorySize ; i++) {
1523            const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i));
1524            layer->shortDump(result, buffer, SIZE);
1525        }
1526
1527        /*
1528         * Dump SurfaceFlinger global state
1529         */
1530
1531        snprintf(buffer, SIZE, "SurfaceFlinger global state:\n");
1532        result.append(buffer);
1533
1534        const GLExtensions& extensions(GLExtensions::getInstance());
1535        snprintf(buffer, SIZE, "GLES: %s, %s, %s\n",
1536                extensions.getVendor(),
1537                extensions.getRenderer(),
1538                extensions.getVersion());
1539        result.append(buffer);
1540        snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension());
1541        result.append(buffer);
1542
1543        mWormholeRegion.dump(result, "WormholeRegion");
1544        const DisplayHardware& hw(graphicPlane(0).displayHardware());
1545        snprintf(buffer, SIZE,
1546                "  orientation=%d, canDraw=%d\n",
1547                mCurrentState.orientation, hw.canDraw());
1548        result.append(buffer);
1549        snprintf(buffer, SIZE,
1550                "  last eglSwapBuffers() time: %f us\n"
1551                "  last transaction time     : %f us\n"
1552                "  refresh-rate              : %f fps\n"
1553                "  x-dpi                     : %f\n"
1554                "  y-dpi                     : %f\n",
1555                mLastSwapBufferTime/1000.0,
1556                mLastTransactionTime/1000.0,
1557                hw.getRefreshRate(),
1558                hw.getDpiX(),
1559                hw.getDpiY());
1560        result.append(buffer);
1561
1562        if (inSwapBuffersDuration || !locked) {
1563            snprintf(buffer, SIZE, "  eglSwapBuffers time: %f us\n",
1564                    inSwapBuffersDuration/1000.0);
1565            result.append(buffer);
1566        }
1567
1568        if (inTransactionDuration || !locked) {
1569            snprintf(buffer, SIZE, "  transaction time: %f us\n",
1570                    inTransactionDuration/1000.0);
1571            result.append(buffer);
1572        }
1573
1574        /*
1575         * Dump HWComposer state
1576         */
1577        HWComposer& hwc(hw.getHwComposer());
1578        snprintf(buffer, SIZE, "  h/w composer %s and %s\n",
1579                hwc.initCheck()==NO_ERROR ? "present" : "not present",
1580                (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled");
1581        result.append(buffer);
1582        hwc.dump(result, buffer, SIZE, mVisibleLayersSortedByZ);
1583
1584        /*
1585         * Dump gralloc state
1586         */
1587        const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
1588        alloc.dump(result);
1589        hw.dump(result);
1590
1591        if (locked) {
1592            mStateLock.unlock();
1593        }
1594    }
1595    write(fd, result.string(), result.size());
1596    return NO_ERROR;
1597}
1598
1599status_t SurfaceFlinger::onTransact(
1600    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
1601{
1602    switch (code) {
1603        case CREATE_CONNECTION:
1604        case SET_TRANSACTION_STATE:
1605        case SET_ORIENTATION:
1606        case BOOT_FINISHED:
1607        case TURN_ELECTRON_BEAM_OFF:
1608        case TURN_ELECTRON_BEAM_ON:
1609        {
1610            // codes that require permission check
1611            IPCThreadState* ipc = IPCThreadState::self();
1612            const int pid = ipc->getCallingPid();
1613            const int uid = ipc->getCallingUid();
1614            if ((uid != AID_GRAPHICS) &&
1615                    !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) {
1616                LOGE("Permission Denial: "
1617                        "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
1618                return PERMISSION_DENIED;
1619            }
1620            break;
1621        }
1622        case CAPTURE_SCREEN:
1623        {
1624            // codes that require permission check
1625            IPCThreadState* ipc = IPCThreadState::self();
1626            const int pid = ipc->getCallingPid();
1627            const int uid = ipc->getCallingUid();
1628            if ((uid != AID_GRAPHICS) &&
1629                    !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) {
1630                LOGE("Permission Denial: "
1631                        "can't read framebuffer pid=%d, uid=%d", pid, uid);
1632                return PERMISSION_DENIED;
1633            }
1634            break;
1635        }
1636    }
1637
1638    status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags);
1639    if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) {
1640        CHECK_INTERFACE(ISurfaceComposer, data, reply);
1641        if (UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) {
1642            IPCThreadState* ipc = IPCThreadState::self();
1643            const int pid = ipc->getCallingPid();
1644            const int uid = ipc->getCallingUid();
1645            LOGE("Permission Denial: "
1646                    "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
1647            return PERMISSION_DENIED;
1648        }
1649        int n;
1650        switch (code) {
1651            case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE
1652            case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE
1653                return NO_ERROR;
1654            case 1002:  // SHOW_UPDATES
1655                n = data.readInt32();
1656                mDebugRegion = n ? n : (mDebugRegion ? 0 : 1);
1657                invalidateHwcGeometry();
1658                repaintEverything();
1659                return NO_ERROR;
1660            case 1003:  // SHOW_BACKGROUND
1661                n = data.readInt32();
1662                mDebugBackground = n ? 1 : 0;
1663                return NO_ERROR;
1664            case 1004:{ // repaint everything
1665                repaintEverything();
1666                return NO_ERROR;
1667            }
1668            case 1005:{ // force transaction
1669                setTransactionFlags(eTransactionNeeded|eTraversalNeeded);
1670                return NO_ERROR;
1671            }
1672            case 1006:{ // enable/disable GraphicLog
1673                int enabled = data.readInt32();
1674                GraphicLog::getInstance().setEnabled(enabled);
1675                return NO_ERROR;
1676            }
1677            case 1008:  // toggle use of hw composer
1678                n = data.readInt32();
1679                mDebugDisableHWC = n ? 1 : 0;
1680                invalidateHwcGeometry();
1681                repaintEverything();
1682                return NO_ERROR;
1683            case 1009:  // toggle use of transform hint
1684                n = data.readInt32();
1685                mDebugDisableTransformHint = n ? 1 : 0;
1686                invalidateHwcGeometry();
1687                repaintEverything();
1688                return NO_ERROR;
1689            case 1010:  // interrogate.
1690                reply->writeInt32(0);
1691                reply->writeInt32(0);
1692                reply->writeInt32(mDebugRegion);
1693                reply->writeInt32(mDebugBackground);
1694                return NO_ERROR;
1695            case 1013: {
1696                Mutex::Autolock _l(mStateLock);
1697                const DisplayHardware& hw(graphicPlane(0).displayHardware());
1698                reply->writeInt32(hw.getPageFlipCount());
1699            }
1700            return NO_ERROR;
1701        }
1702    }
1703    return err;
1704}
1705
1706void SurfaceFlinger::repaintEverything() {
1707    const DisplayHardware& hw(graphicPlane(0).displayHardware());
1708    const Rect bounds(hw.getBounds());
1709    setInvalidateRegion(Region(bounds));
1710    signalEvent();
1711}
1712
1713void SurfaceFlinger::setInvalidateRegion(const Region& reg) {
1714    Mutex::Autolock _l(mInvalidateLock);
1715    mInvalidateRegion = reg;
1716}
1717
1718Region SurfaceFlinger::getAndClearInvalidateRegion() {
1719    Mutex::Autolock _l(mInvalidateLock);
1720    Region reg(mInvalidateRegion);
1721    mInvalidateRegion.clear();
1722    return reg;
1723}
1724
1725// ---------------------------------------------------------------------------
1726
1727status_t SurfaceFlinger::renderScreenToTexture(DisplayID dpy,
1728        GLuint* textureName, GLfloat* uOut, GLfloat* vOut)
1729{
1730    Mutex::Autolock _l(mStateLock);
1731    return renderScreenToTextureLocked(dpy, textureName, uOut, vOut);
1732}
1733
1734status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy,
1735        GLuint* textureName, GLfloat* uOut, GLfloat* vOut)
1736{
1737    if (!GLExtensions::getInstance().haveFramebufferObject())
1738        return INVALID_OPERATION;
1739
1740    // get screen geometry
1741    const DisplayHardware& hw(graphicPlane(dpy).displayHardware());
1742    const uint32_t hw_w = hw.getWidth();
1743    const uint32_t hw_h = hw.getHeight();
1744    GLfloat u = 1;
1745    GLfloat v = 1;
1746
1747    // make sure to clear all GL error flags
1748    while ( glGetError() != GL_NO_ERROR ) ;
1749
1750    // create a FBO
1751    GLuint name, tname;
1752    glGenTextures(1, &tname);
1753    glBindTexture(GL_TEXTURE_2D, tname);
1754    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
1755            hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
1756    if (glGetError() != GL_NO_ERROR) {
1757        while ( glGetError() != GL_NO_ERROR ) ;
1758        GLint tw = (2 << (31 - clz(hw_w)));
1759        GLint th = (2 << (31 - clz(hw_h)));
1760        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
1761                tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
1762        u = GLfloat(hw_w) / tw;
1763        v = GLfloat(hw_h) / th;
1764    }
1765    glGenFramebuffersOES(1, &name);
1766    glBindFramebufferOES(GL_FRAMEBUFFER_OES, name);
1767    glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES,
1768            GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0);
1769
1770    // redraw the screen entirely...
1771    glDisable(GL_TEXTURE_EXTERNAL_OES);
1772    glDisable(GL_TEXTURE_2D);
1773    glDisable(GL_SCISSOR_TEST);
1774    glClearColor(0,0,0,1);
1775    glClear(GL_COLOR_BUFFER_BIT);
1776    glEnable(GL_SCISSOR_TEST);
1777    glMatrixMode(GL_MODELVIEW);
1778    glLoadIdentity();
1779    const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ);
1780    const size_t count = layers.size();
1781    for (size_t i=0 ; i<count ; ++i) {
1782        const sp<LayerBase>& layer(layers[i]);
1783        layer->drawForSreenShot();
1784    }
1785
1786    hw.compositionComplete();
1787
1788    // back to main framebuffer
1789    glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0);
1790    glDisable(GL_SCISSOR_TEST);
1791    glDeleteFramebuffersOES(1, &name);
1792
1793    *textureName = tname;
1794    *uOut = u;
1795    *vOut = v;
1796    return NO_ERROR;
1797}
1798
1799// ---------------------------------------------------------------------------
1800
1801status_t SurfaceFlinger::electronBeamOffAnimationImplLocked()
1802{
1803    // get screen geometry
1804    const DisplayHardware& hw(graphicPlane(0).displayHardware());
1805    const uint32_t hw_w = hw.getWidth();
1806    const uint32_t hw_h = hw.getHeight();
1807    const Region screenBounds(hw.getBounds());
1808
1809    GLfloat u, v;
1810    GLuint tname;
1811    status_t result = renderScreenToTextureLocked(0, &tname, &u, &v);
1812    if (result != NO_ERROR) {
1813        return result;
1814    }
1815
1816    GLfloat vtx[8];
1817    const GLfloat texCoords[4][2] = { {0,0}, {0,v}, {u,v}, {u,0} };
1818    glBindTexture(GL_TEXTURE_2D, tname);
1819    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1820    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
1821    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
1822    glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
1823    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
1824    glVertexPointer(2, GL_FLOAT, 0, vtx);
1825
1826    /*
1827     * Texture coordinate mapping
1828     *
1829     *                 u
1830     *    1 +----------+---+
1831     *      |     |    |   |  image is inverted
1832     *      |     V    |   |  w.r.t. the texture
1833     *  1-v +----------+   |  coordinates
1834     *      |              |
1835     *      |              |
1836     *      |              |
1837     *    0 +--------------+
1838     *      0              1
1839     *
1840     */
1841
1842    class s_curve_interpolator {
1843        const float nbFrames, s, v;
1844    public:
1845        s_curve_interpolator(int nbFrames, float s)
1846        : nbFrames(1.0f / (nbFrames-1)), s(s),
1847          v(1.0f + expf(-s + 0.5f*s)) {
1848        }
1849        float operator()(int f) {
1850            const float x = f * nbFrames;
1851            return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f;
1852        }
1853    };
1854
1855    class v_stretch {
1856        const GLfloat hw_w, hw_h;
1857    public:
1858        v_stretch(uint32_t hw_w, uint32_t hw_h)
1859        : hw_w(hw_w), hw_h(hw_h) {
1860        }
1861        void operator()(GLfloat* vtx, float v) {
1862            const GLfloat w = hw_w + (hw_w * v);
1863            const GLfloat h = hw_h - (hw_h * v);
1864            const GLfloat x = (hw_w - w) * 0.5f;
1865            const GLfloat y = (hw_h - h) * 0.5f;
1866            vtx[0] = x;         vtx[1] = y;
1867            vtx[2] = x;         vtx[3] = y + h;
1868            vtx[4] = x + w;     vtx[5] = y + h;
1869            vtx[6] = x + w;     vtx[7] = y;
1870        }
1871    };
1872
1873    class h_stretch {
1874        const GLfloat hw_w, hw_h;
1875    public:
1876        h_stretch(uint32_t hw_w, uint32_t hw_h)
1877        : hw_w(hw_w), hw_h(hw_h) {
1878        }
1879        void operator()(GLfloat* vtx, float v) {
1880            const GLfloat w = hw_w - (hw_w * v);
1881            const GLfloat h = 1.0f;
1882            const GLfloat x = (hw_w - w) * 0.5f;
1883            const GLfloat y = (hw_h - h) * 0.5f;
1884            vtx[0] = x;         vtx[1] = y;
1885            vtx[2] = x;         vtx[3] = y + h;
1886            vtx[4] = x + w;     vtx[5] = y + h;
1887            vtx[6] = x + w;     vtx[7] = y;
1888        }
1889    };
1890
1891    // the full animation is 24 frames
1892    char value[PROPERTY_VALUE_MAX];
1893    property_get("debug.sf.electron_frames", value, "24");
1894    int nbFrames = (atoi(value) + 1) >> 1;
1895    if (nbFrames <= 0) // just in case
1896        nbFrames = 24;
1897
1898    s_curve_interpolator itr(nbFrames, 7.5f);
1899    s_curve_interpolator itg(nbFrames, 8.0f);
1900    s_curve_interpolator itb(nbFrames, 8.5f);
1901
1902    v_stretch vverts(hw_w, hw_h);
1903
1904    glMatrixMode(GL_TEXTURE);
1905    glLoadIdentity();
1906    glMatrixMode(GL_MODELVIEW);
1907    glLoadIdentity();
1908
1909    glEnable(GL_BLEND);
1910    glBlendFunc(GL_ONE, GL_ONE);
1911    for (int i=0 ; i<nbFrames ; i++) {
1912        float x, y, w, h;
1913        const float vr = itr(i);
1914        const float vg = itg(i);
1915        const float vb = itb(i);
1916
1917        // clear screen
1918        glColorMask(1,1,1,1);
1919        glClear(GL_COLOR_BUFFER_BIT);
1920        glEnable(GL_TEXTURE_2D);
1921
1922        // draw the red plane
1923        vverts(vtx, vr);
1924        glColorMask(1,0,0,1);
1925        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1926
1927        // draw the green plane
1928        vverts(vtx, vg);
1929        glColorMask(0,1,0,1);
1930        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1931
1932        // draw the blue plane
1933        vverts(vtx, vb);
1934        glColorMask(0,0,1,1);
1935        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1936
1937        // draw the white highlight (we use the last vertices)
1938        glDisable(GL_TEXTURE_2D);
1939        glColorMask(1,1,1,1);
1940        glColor4f(vg, vg, vg, 1);
1941        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1942        hw.flip(screenBounds);
1943    }
1944
1945    h_stretch hverts(hw_w, hw_h);
1946    glDisable(GL_BLEND);
1947    glDisable(GL_TEXTURE_2D);
1948    glColorMask(1,1,1,1);
1949    for (int i=0 ; i<nbFrames ; i++) {
1950        const float v = itg(i);
1951        hverts(vtx, v);
1952        glClear(GL_COLOR_BUFFER_BIT);
1953        glColor4f(1-v, 1-v, 1-v, 1);
1954        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1955        hw.flip(screenBounds);
1956    }
1957
1958    glColorMask(1,1,1,1);
1959    glEnable(GL_SCISSOR_TEST);
1960    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
1961    glDeleteTextures(1, &tname);
1962    glDisable(GL_TEXTURE_2D);
1963    glDisable(GL_BLEND);
1964    return NO_ERROR;
1965}
1966
1967status_t SurfaceFlinger::electronBeamOnAnimationImplLocked()
1968{
1969    status_t result = PERMISSION_DENIED;
1970
1971    if (!GLExtensions::getInstance().haveFramebufferObject())
1972        return INVALID_OPERATION;
1973
1974
1975    // get screen geometry
1976    const DisplayHardware& hw(graphicPlane(0).displayHardware());
1977    const uint32_t hw_w = hw.getWidth();
1978    const uint32_t hw_h = hw.getHeight();
1979    const Region screenBounds(hw.bounds());
1980
1981    GLfloat u, v;
1982    GLuint tname;
1983    result = renderScreenToTextureLocked(0, &tname, &u, &v);
1984    if (result != NO_ERROR) {
1985        return result;
1986    }
1987
1988    GLfloat vtx[8];
1989    const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} };
1990    glBindTexture(GL_TEXTURE_2D, tname);
1991    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
1992    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
1993    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
1994    glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
1995    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
1996    glVertexPointer(2, GL_FLOAT, 0, vtx);
1997
1998    class s_curve_interpolator {
1999        const float nbFrames, s, v;
2000    public:
2001        s_curve_interpolator(int nbFrames, float s)
2002        : nbFrames(1.0f / (nbFrames-1)), s(s),
2003          v(1.0f + expf(-s + 0.5f*s)) {
2004        }
2005        float operator()(int f) {
2006            const float x = f * nbFrames;
2007            return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f;
2008        }
2009    };
2010
2011    class v_stretch {
2012        const GLfloat hw_w, hw_h;
2013    public:
2014        v_stretch(uint32_t hw_w, uint32_t hw_h)
2015        : hw_w(hw_w), hw_h(hw_h) {
2016        }
2017        void operator()(GLfloat* vtx, float v) {
2018            const GLfloat w = hw_w + (hw_w * v);
2019            const GLfloat h = hw_h - (hw_h * v);
2020            const GLfloat x = (hw_w - w) * 0.5f;
2021            const GLfloat y = (hw_h - h) * 0.5f;
2022            vtx[0] = x;         vtx[1] = y;
2023            vtx[2] = x;         vtx[3] = y + h;
2024            vtx[4] = x + w;     vtx[5] = y + h;
2025            vtx[6] = x + w;     vtx[7] = y;
2026        }
2027    };
2028
2029    class h_stretch {
2030        const GLfloat hw_w, hw_h;
2031    public:
2032        h_stretch(uint32_t hw_w, uint32_t hw_h)
2033        : hw_w(hw_w), hw_h(hw_h) {
2034        }
2035        void operator()(GLfloat* vtx, float v) {
2036            const GLfloat w = hw_w - (hw_w * v);
2037            const GLfloat h = 1.0f;
2038            const GLfloat x = (hw_w - w) * 0.5f;
2039            const GLfloat y = (hw_h - h) * 0.5f;
2040            vtx[0] = x;         vtx[1] = y;
2041            vtx[2] = x;         vtx[3] = y + h;
2042            vtx[4] = x + w;     vtx[5] = y + h;
2043            vtx[6] = x + w;     vtx[7] = y;
2044        }
2045    };
2046
2047    // the full animation is 12 frames
2048    int nbFrames = 8;
2049    s_curve_interpolator itr(nbFrames, 7.5f);
2050    s_curve_interpolator itg(nbFrames, 8.0f);
2051    s_curve_interpolator itb(nbFrames, 8.5f);
2052
2053    h_stretch hverts(hw_w, hw_h);
2054    glDisable(GL_BLEND);
2055    glDisable(GL_TEXTURE_2D);
2056    glColorMask(1,1,1,1);
2057    for (int i=nbFrames-1 ; i>=0 ; i--) {
2058        const float v = itg(i);
2059        hverts(vtx, v);
2060        glClear(GL_COLOR_BUFFER_BIT);
2061        glColor4f(1-v, 1-v, 1-v, 1);
2062        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
2063        hw.flip(screenBounds);
2064    }
2065
2066    nbFrames = 4;
2067    v_stretch vverts(hw_w, hw_h);
2068    glEnable(GL_BLEND);
2069    glBlendFunc(GL_ONE, GL_ONE);
2070    for (int i=nbFrames-1 ; i>=0 ; i--) {
2071        float x, y, w, h;
2072        const float vr = itr(i);
2073        const float vg = itg(i);
2074        const float vb = itb(i);
2075
2076        // clear screen
2077        glColorMask(1,1,1,1);
2078        glClear(GL_COLOR_BUFFER_BIT);
2079        glEnable(GL_TEXTURE_2D);
2080
2081        // draw the red plane
2082        vverts(vtx, vr);
2083        glColorMask(1,0,0,1);
2084        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
2085
2086        // draw the green plane
2087        vverts(vtx, vg);
2088        glColorMask(0,1,0,1);
2089        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
2090
2091        // draw the blue plane
2092        vverts(vtx, vb);
2093        glColorMask(0,0,1,1);
2094        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
2095
2096        hw.flip(screenBounds);
2097    }
2098
2099    glColorMask(1,1,1,1);
2100    glEnable(GL_SCISSOR_TEST);
2101    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
2102    glDeleteTextures(1, &tname);
2103    glDisable(GL_TEXTURE_2D);
2104    glDisable(GL_BLEND);
2105
2106    return NO_ERROR;
2107}
2108
2109// ---------------------------------------------------------------------------
2110
2111status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode)
2112{
2113    DisplayHardware& hw(graphicPlane(0).editDisplayHardware());
2114    if (!hw.canDraw()) {
2115        // we're already off
2116        return NO_ERROR;
2117    }
2118
2119    // turn off hwc while we're doing the animation
2120    hw.getHwComposer().disable();
2121    // and make sure to turn it back on (if needed) next time we compose
2122    invalidateHwcGeometry();
2123
2124    if (mode & ISurfaceComposer::eElectronBeamAnimationOff) {
2125        electronBeamOffAnimationImplLocked();
2126    }
2127
2128    // always clear the whole screen at the end of the animation
2129    glClearColor(0,0,0,1);
2130    glDisable(GL_SCISSOR_TEST);
2131    glClear(GL_COLOR_BUFFER_BIT);
2132    glEnable(GL_SCISSOR_TEST);
2133    hw.flip( Region(hw.bounds()) );
2134
2135    return NO_ERROR;
2136}
2137
2138status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode)
2139{
2140    class MessageTurnElectronBeamOff : public MessageBase {
2141        SurfaceFlinger* flinger;
2142        int32_t mode;
2143        status_t result;
2144    public:
2145        MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode)
2146            : flinger(flinger), mode(mode), result(PERMISSION_DENIED) {
2147        }
2148        status_t getResult() const {
2149            return result;
2150        }
2151        virtual bool handler() {
2152            Mutex::Autolock _l(flinger->mStateLock);
2153            result = flinger->turnElectronBeamOffImplLocked(mode);
2154            return true;
2155        }
2156    };
2157
2158    sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode);
2159    status_t res = postMessageSync(msg);
2160    if (res == NO_ERROR) {
2161        res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult();
2162
2163        // work-around: when the power-manager calls us we activate the
2164        // animation. eventually, the "on" animation will be called
2165        // by the power-manager itself
2166        mElectronBeamAnimationMode = mode;
2167    }
2168    return res;
2169}
2170
2171// ---------------------------------------------------------------------------
2172
2173status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode)
2174{
2175    DisplayHardware& hw(graphicPlane(0).editDisplayHardware());
2176    if (hw.canDraw()) {
2177        // we're already on
2178        return NO_ERROR;
2179    }
2180    if (mode & ISurfaceComposer::eElectronBeamAnimationOn) {
2181        electronBeamOnAnimationImplLocked();
2182    }
2183
2184    // make sure to redraw the whole screen when the animation is done
2185    mDirtyRegion.set(hw.bounds());
2186    signalEvent();
2187
2188    return NO_ERROR;
2189}
2190
2191status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode)
2192{
2193    class MessageTurnElectronBeamOn : public MessageBase {
2194        SurfaceFlinger* flinger;
2195        int32_t mode;
2196        status_t result;
2197    public:
2198        MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode)
2199            : flinger(flinger), mode(mode), result(PERMISSION_DENIED) {
2200        }
2201        status_t getResult() const {
2202            return result;
2203        }
2204        virtual bool handler() {
2205            Mutex::Autolock _l(flinger->mStateLock);
2206            result = flinger->turnElectronBeamOnImplLocked(mode);
2207            return true;
2208        }
2209    };
2210
2211    postMessageAsync( new MessageTurnElectronBeamOn(this, mode) );
2212    return NO_ERROR;
2213}
2214
2215// ---------------------------------------------------------------------------
2216
2217status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy,
2218        sp<IMemoryHeap>* heap,
2219        uint32_t* w, uint32_t* h, PixelFormat* f,
2220        uint32_t sw, uint32_t sh,
2221        uint32_t minLayerZ, uint32_t maxLayerZ)
2222{
2223    status_t result = PERMISSION_DENIED;
2224
2225    // only one display supported for now
2226    if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
2227        return BAD_VALUE;
2228
2229    if (!GLExtensions::getInstance().haveFramebufferObject())
2230        return INVALID_OPERATION;
2231
2232    // get screen geometry
2233    const DisplayHardware& hw(graphicPlane(dpy).displayHardware());
2234    const uint32_t hw_w = hw.getWidth();
2235    const uint32_t hw_h = hw.getHeight();
2236
2237    if ((sw > hw_w) || (sh > hw_h))
2238        return BAD_VALUE;
2239
2240    sw = (!sw) ? hw_w : sw;
2241    sh = (!sh) ? hw_h : sh;
2242    const size_t size = sw * sh * 4;
2243
2244    //LOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d",
2245    //        sw, sh, minLayerZ, maxLayerZ);
2246
2247    // make sure to clear all GL error flags
2248    while ( glGetError() != GL_NO_ERROR ) ;
2249
2250    // create a FBO
2251    GLuint name, tname;
2252    glGenRenderbuffersOES(1, &tname);
2253    glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname);
2254    glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh);
2255    glGenFramebuffersOES(1, &name);
2256    glBindFramebufferOES(GL_FRAMEBUFFER_OES, name);
2257    glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES,
2258            GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname);
2259
2260    GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES);
2261
2262    if (status == GL_FRAMEBUFFER_COMPLETE_OES) {
2263
2264        // invert everything, b/c glReadPixel() below will invert the FB
2265        glViewport(0, 0, sw, sh);
2266        glScissor(0, 0, sw, sh);
2267        glEnable(GL_SCISSOR_TEST);
2268        glMatrixMode(GL_PROJECTION);
2269        glPushMatrix();
2270        glLoadIdentity();
2271        glOrthof(0, hw_w, hw_h, 0, 0, 1);
2272        glMatrixMode(GL_MODELVIEW);
2273
2274        // redraw the screen entirely...
2275        glClearColor(0,0,0,1);
2276        glClear(GL_COLOR_BUFFER_BIT);
2277
2278        const LayerVector& layers(mDrawingState.layersSortedByZ);
2279        const size_t count = layers.size();
2280        for (size_t i=0 ; i<count ; ++i) {
2281            const sp<LayerBase>& layer(layers[i]);
2282            const uint32_t flags = layer->drawingState().flags;
2283            if (!(flags & ISurfaceComposer::eLayerHidden)) {
2284                const uint32_t z = layer->drawingState().z;
2285                if (z >= minLayerZ && z <= maxLayerZ) {
2286                    layer->drawForSreenShot();
2287                }
2288            }
2289        }
2290
2291        // XXX: this is needed on tegra
2292        glEnable(GL_SCISSOR_TEST);
2293        glScissor(0, 0, sw, sh);
2294
2295        // check for errors and return screen capture
2296        if (glGetError() != GL_NO_ERROR) {
2297            // error while rendering
2298            result = INVALID_OPERATION;
2299        } else {
2300            // allocate shared memory large enough to hold the
2301            // screen capture
2302            sp<MemoryHeapBase> base(
2303                    new MemoryHeapBase(size, 0, "screen-capture") );
2304            void* const ptr = base->getBase();
2305            if (ptr) {
2306                // capture the screen with glReadPixels()
2307                glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr);
2308                if (glGetError() == GL_NO_ERROR) {
2309                    *heap = base;
2310                    *w = sw;
2311                    *h = sh;
2312                    *f = PIXEL_FORMAT_RGBA_8888;
2313                    result = NO_ERROR;
2314                }
2315            } else {
2316                result = NO_MEMORY;
2317            }
2318        }
2319        glEnable(GL_SCISSOR_TEST);
2320        glViewport(0, 0, hw_w, hw_h);
2321        glMatrixMode(GL_PROJECTION);
2322        glPopMatrix();
2323        glMatrixMode(GL_MODELVIEW);
2324    } else {
2325        result = BAD_VALUE;
2326    }
2327
2328    // release FBO resources
2329    glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0);
2330    glDeleteRenderbuffersOES(1, &tname);
2331    glDeleteFramebuffersOES(1, &name);
2332
2333    hw.compositionComplete();
2334
2335    // LOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK");
2336
2337    return result;
2338}
2339
2340
2341status_t SurfaceFlinger::captureScreen(DisplayID dpy,
2342        sp<IMemoryHeap>* heap,
2343        uint32_t* width, uint32_t* height, PixelFormat* format,
2344        uint32_t sw, uint32_t sh,
2345        uint32_t minLayerZ, uint32_t maxLayerZ)
2346{
2347    // only one display supported for now
2348    if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
2349        return BAD_VALUE;
2350
2351    if (!GLExtensions::getInstance().haveFramebufferObject())
2352        return INVALID_OPERATION;
2353
2354    class MessageCaptureScreen : public MessageBase {
2355        SurfaceFlinger* flinger;
2356        DisplayID dpy;
2357        sp<IMemoryHeap>* heap;
2358        uint32_t* w;
2359        uint32_t* h;
2360        PixelFormat* f;
2361        uint32_t sw;
2362        uint32_t sh;
2363        uint32_t minLayerZ;
2364        uint32_t maxLayerZ;
2365        status_t result;
2366    public:
2367        MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy,
2368                sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f,
2369                uint32_t sw, uint32_t sh,
2370                uint32_t minLayerZ, uint32_t maxLayerZ)
2371            : flinger(flinger), dpy(dpy),
2372              heap(heap), w(w), h(h), f(f), sw(sw), sh(sh),
2373              minLayerZ(minLayerZ), maxLayerZ(maxLayerZ),
2374              result(PERMISSION_DENIED)
2375        {
2376        }
2377        status_t getResult() const {
2378            return result;
2379        }
2380        virtual bool handler() {
2381            Mutex::Autolock _l(flinger->mStateLock);
2382
2383            // if we have secure windows, never allow the screen capture
2384            if (flinger->mSecureFrameBuffer)
2385                return true;
2386
2387            result = flinger->captureScreenImplLocked(dpy,
2388                    heap, w, h, f, sw, sh, minLayerZ, maxLayerZ);
2389
2390            return true;
2391        }
2392    };
2393
2394    sp<MessageBase> msg = new MessageCaptureScreen(this,
2395            dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ);
2396    status_t res = postMessageSync(msg);
2397    if (res == NO_ERROR) {
2398        res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult();
2399    }
2400    return res;
2401}
2402
2403// ---------------------------------------------------------------------------
2404
2405sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const
2406{
2407    sp<Layer> result;
2408    Mutex::Autolock _l(mStateLock);
2409    result = mLayerMap.valueFor( sur->asBinder() ).promote();
2410    return result;
2411}
2412
2413// ---------------------------------------------------------------------------
2414
2415Client::Client(const sp<SurfaceFlinger>& flinger)
2416    : mFlinger(flinger), mNameGenerator(1)
2417{
2418}
2419
2420Client::~Client()
2421{
2422    const size_t count = mLayers.size();
2423    for (size_t i=0 ; i<count ; i++) {
2424        sp<LayerBaseClient> layer(mLayers.valueAt(i).promote());
2425        if (layer != 0) {
2426            mFlinger->removeLayer(layer);
2427        }
2428    }
2429}
2430
2431status_t Client::initCheck() const {
2432    return NO_ERROR;
2433}
2434
2435size_t Client::attachLayer(const sp<LayerBaseClient>& layer)
2436{
2437    Mutex::Autolock _l(mLock);
2438    size_t name = mNameGenerator++;
2439    mLayers.add(name, layer);
2440    return name;
2441}
2442
2443void Client::detachLayer(const LayerBaseClient* layer)
2444{
2445    Mutex::Autolock _l(mLock);
2446    // we do a linear search here, because this doesn't happen often
2447    const size_t count = mLayers.size();
2448    for (size_t i=0 ; i<count ; i++) {
2449        if (mLayers.valueAt(i) == layer) {
2450            mLayers.removeItemsAt(i, 1);
2451            break;
2452        }
2453    }
2454}
2455sp<LayerBaseClient> Client::getLayerUser(int32_t i) const
2456{
2457    Mutex::Autolock _l(mLock);
2458    sp<LayerBaseClient> lbc;
2459    wp<LayerBaseClient> layer(mLayers.valueFor(i));
2460    if (layer != 0) {
2461        lbc = layer.promote();
2462        LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i));
2463    }
2464    return lbc;
2465}
2466
2467
2468status_t Client::onTransact(
2469    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
2470{
2471    // these must be checked
2472     IPCThreadState* ipc = IPCThreadState::self();
2473     const int pid = ipc->getCallingPid();
2474     const int uid = ipc->getCallingUid();
2475     const int self_pid = getpid();
2476     if (UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) {
2477         // we're called from a different process, do the real check
2478         if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger))
2479         {
2480             LOGE("Permission Denial: "
2481                     "can't openGlobalTransaction pid=%d, uid=%d", pid, uid);
2482             return PERMISSION_DENIED;
2483         }
2484     }
2485     return BnSurfaceComposerClient::onTransact(code, data, reply, flags);
2486}
2487
2488
2489sp<ISurface> Client::createSurface(
2490        ISurfaceComposerClient::surface_data_t* params,
2491        const String8& name,
2492        DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
2493        uint32_t flags)
2494{
2495    /*
2496     * createSurface must be called from the GL thread so that it can
2497     * have access to the GL context.
2498     */
2499
2500    class MessageCreateSurface : public MessageBase {
2501        sp<ISurface> result;
2502        SurfaceFlinger* flinger;
2503        ISurfaceComposerClient::surface_data_t* params;
2504        Client* client;
2505        const String8& name;
2506        DisplayID display;
2507        uint32_t w, h;
2508        PixelFormat format;
2509        uint32_t flags;
2510    public:
2511        MessageCreateSurface(SurfaceFlinger* flinger,
2512                ISurfaceComposerClient::surface_data_t* params,
2513                const String8& name, Client* client,
2514                DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
2515                uint32_t flags)
2516            : flinger(flinger), params(params), client(client), name(name),
2517              display(display), w(w), h(h), format(format), flags(flags)
2518        {
2519        }
2520        sp<ISurface> getResult() const { return result; }
2521        virtual bool handler() {
2522            result = flinger->createSurface(params, name, client,
2523                    display, w, h, format, flags);
2524            return true;
2525        }
2526    };
2527
2528    sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(),
2529            params, name, this, display, w, h, format, flags);
2530    mFlinger->postMessageSync(msg);
2531    return static_cast<MessageCreateSurface*>( msg.get() )->getResult();
2532}
2533status_t Client::destroySurface(SurfaceID sid) {
2534    return mFlinger->removeSurface(this, sid);
2535}
2536
2537// ---------------------------------------------------------------------------
2538
2539GraphicBufferAlloc::GraphicBufferAlloc() {}
2540
2541GraphicBufferAlloc::~GraphicBufferAlloc() {}
2542
2543sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h,
2544        PixelFormat format, uint32_t usage, status_t* error) {
2545    sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage));
2546    status_t err = graphicBuffer->initCheck();
2547    *error = err;
2548    if (err != 0 || graphicBuffer->handle == 0) {
2549        if (err == NO_MEMORY) {
2550            GraphicBuffer::dumpAllocationsToSystemLog();
2551        }
2552        LOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) "
2553             "failed (%s), handle=%p",
2554                w, h, strerror(-err), graphicBuffer->handle);
2555        return 0;
2556    }
2557    return graphicBuffer;
2558}
2559
2560// ---------------------------------------------------------------------------
2561
2562GraphicPlane::GraphicPlane()
2563    : mHw(0)
2564{
2565}
2566
2567GraphicPlane::~GraphicPlane() {
2568    delete mHw;
2569}
2570
2571bool GraphicPlane::initialized() const {
2572    return mHw ? true : false;
2573}
2574
2575int GraphicPlane::getWidth() const {
2576    return mWidth;
2577}
2578
2579int GraphicPlane::getHeight() const {
2580    return mHeight;
2581}
2582
2583void GraphicPlane::setDisplayHardware(DisplayHardware *hw)
2584{
2585    mHw = hw;
2586
2587    // initialize the display orientation transform.
2588    // it's a constant that should come from the display driver.
2589    int displayOrientation = ISurfaceComposer::eOrientationDefault;
2590    char property[PROPERTY_VALUE_MAX];
2591    if (property_get("ro.sf.hwrotation", property, NULL) > 0) {
2592        //displayOrientation
2593        switch (atoi(property)) {
2594        case 90:
2595            displayOrientation = ISurfaceComposer::eOrientation90;
2596            break;
2597        case 270:
2598            displayOrientation = ISurfaceComposer::eOrientation270;
2599            break;
2600        }
2601    }
2602
2603    const float w = hw->getWidth();
2604    const float h = hw->getHeight();
2605    GraphicPlane::orientationToTransfrom(displayOrientation, w, h,
2606            &mDisplayTransform);
2607    if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) {
2608        mDisplayWidth = h;
2609        mDisplayHeight = w;
2610    } else {
2611        mDisplayWidth = w;
2612        mDisplayHeight = h;
2613    }
2614
2615    setOrientation(ISurfaceComposer::eOrientationDefault);
2616}
2617
2618status_t GraphicPlane::orientationToTransfrom(
2619        int orientation, int w, int h, Transform* tr)
2620{
2621    uint32_t flags = 0;
2622    switch (orientation) {
2623    case ISurfaceComposer::eOrientationDefault:
2624        flags = Transform::ROT_0;
2625        break;
2626    case ISurfaceComposer::eOrientation90:
2627        flags = Transform::ROT_90;
2628        break;
2629    case ISurfaceComposer::eOrientation180:
2630        flags = Transform::ROT_180;
2631        break;
2632    case ISurfaceComposer::eOrientation270:
2633        flags = Transform::ROT_270;
2634        break;
2635    default:
2636        return BAD_VALUE;
2637    }
2638    tr->set(flags, w, h);
2639    return NO_ERROR;
2640}
2641
2642status_t GraphicPlane::setOrientation(int orientation)
2643{
2644    // If the rotation can be handled in hardware, this is where
2645    // the magic should happen.
2646
2647    const DisplayHardware& hw(displayHardware());
2648    const float w = mDisplayWidth;
2649    const float h = mDisplayHeight;
2650    mWidth = int(w);
2651    mHeight = int(h);
2652
2653    Transform orientationTransform;
2654    GraphicPlane::orientationToTransfrom(orientation, w, h,
2655            &orientationTransform);
2656    if (orientation & ISurfaceComposer::eOrientationSwapMask) {
2657        mWidth = int(h);
2658        mHeight = int(w);
2659    }
2660
2661    mOrientation = orientation;
2662    mGlobalTransform = mDisplayTransform * orientationTransform;
2663    return NO_ERROR;
2664}
2665
2666const DisplayHardware& GraphicPlane::displayHardware() const {
2667    return *mHw;
2668}
2669
2670DisplayHardware& GraphicPlane::editDisplayHardware() {
2671    return *mHw;
2672}
2673
2674const Transform& GraphicPlane::transform() const {
2675    return mGlobalTransform;
2676}
2677
2678EGLDisplay GraphicPlane::getEGLDisplay() const {
2679    return mHw->getEGLDisplay();
2680}
2681
2682// ---------------------------------------------------------------------------
2683
2684}; // namespace android
2685