SurfaceComposerClient.cpp revision 6c913be9ca95fd6b556d056e165a4ba6dc69795b 
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#define LOG_TAG "SurfaceComposerClient"
18
19#include <stdint.h>
20#include <sys/types.h>
21
22#include <utils/Errors.h>
23#include <utils/Log.h>
24#include <utils/Singleton.h>
25#include <utils/SortedVector.h>
26#include <utils/String8.h>
27#include <utils/threads.h>
28
29#include <binder/IMemory.h>
30#include <binder/IServiceManager.h>
31
32#include <ui/DisplayInfo.h>
33
34#include <gui/CpuConsumer.h>
35#include <gui/IGraphicBufferProducer.h>
36#include <gui/ISurfaceComposer.h>
37#include <gui/ISurfaceComposerClient.h>
38#include <gui/SurfaceComposerClient.h>
39
40#include <private/gui/ComposerService.h>
41#include <private/gui/LayerState.h>
42
43namespace android {
44// ---------------------------------------------------------------------------
45
46ANDROID_SINGLETON_STATIC_INSTANCE(ComposerService);
47
48ComposerService::ComposerService()
49: Singleton<ComposerService>() {
50    Mutex::Autolock _l(mLock);
51    connectLocked();
52}
53
54void ComposerService::connectLocked() {
55    const String16 name("SurfaceFlinger");
56    while (getService(name, &mComposerService) != NO_ERROR) {
57        usleep(250000);
58    }
59    assert(mComposerService != NULL);
60
61    // Create the death listener.
62    class DeathObserver : public IBinder::DeathRecipient {
63        ComposerService& mComposerService;
64        virtual void binderDied(const wp<IBinder>& who) {
65            ALOGW("ComposerService remote (surfaceflinger) died [%p]",
66                  who.unsafe_get());
67            mComposerService.composerServiceDied();
68        }
69     public:
70        DeathObserver(ComposerService& mgr) : mComposerService(mgr) { }
71    };
72
73    mDeathObserver = new DeathObserver(*const_cast<ComposerService*>(this));
74    mComposerService->asBinder()->linkToDeath(mDeathObserver);
75}
76
77/*static*/ sp<ISurfaceComposer> ComposerService::getComposerService() {
78    ComposerService& instance = ComposerService::getInstance();
79    Mutex::Autolock _l(instance.mLock);
80    if (instance.mComposerService == NULL) {
81        ComposerService::getInstance().connectLocked();
82        assert(instance.mComposerService != NULL);
83        ALOGD("ComposerService reconnected");
84    }
85    return instance.mComposerService;
86}
87
88void ComposerService::composerServiceDied()
89{
90    Mutex::Autolock _l(mLock);
91    mComposerService = NULL;
92    mDeathObserver = NULL;
93}
94
95// ---------------------------------------------------------------------------
96
97static inline
98int compare_type(const ComposerState& lhs, const ComposerState& rhs) {
99    if (lhs.client < rhs.client)  return -1;
100    if (lhs.client > rhs.client)  return 1;
101    if (lhs.state.surface < rhs.state.surface)  return -1;
102    if (lhs.state.surface > rhs.state.surface)  return 1;
103    return 0;
104}
105
106static inline
107int compare_type(const DisplayState& lhs, const DisplayState& rhs) {
108    return compare_type(lhs.token, rhs.token);
109}
110
111class Composer : public Singleton<Composer>
112{
113    friend class Singleton<Composer>;
114
115    mutable Mutex               mLock;
116    SortedVector<ComposerState> mComposerStates;
117    SortedVector<DisplayState > mDisplayStates;
118    uint32_t                    mForceSynchronous;
119    uint32_t                    mTransactionNestCount;
120    bool                        mAnimation;
121
122    Composer() : Singleton<Composer>(),
123        mForceSynchronous(0), mTransactionNestCount(0),
124        mAnimation(false)
125    { }
126
127    void openGlobalTransactionImpl();
128    void closeGlobalTransactionImpl(bool synchronous);
129    void setAnimationTransactionImpl();
130
131    layer_state_t* getLayerStateLocked(
132            const sp<SurfaceComposerClient>& client, const sp<IBinder>& id);
133
134    DisplayState& getDisplayStateLocked(const sp<IBinder>& token);
135
136public:
137    sp<IBinder> createDisplay(const String8& displayName, bool secure);
138    void destroyDisplay(const sp<IBinder>& display);
139    sp<IBinder> getBuiltInDisplay(int32_t id);
140
141    status_t setPosition(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
142            float x, float y);
143    status_t setSize(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
144            uint32_t w, uint32_t h);
145    status_t setLayer(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
146            int32_t z);
147    status_t setFlags(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
148            uint32_t flags, uint32_t mask);
149    status_t setTransparentRegionHint(
150            const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
151            const Region& transparentRegion);
152    status_t setAlpha(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
153            float alpha);
154    status_t setMatrix(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
155            float dsdx, float dtdx, float dsdy, float dtdy);
156    status_t setOrientation(int orientation);
157    status_t setCrop(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
158            const Rect& crop);
159    status_t setLayerStack(const sp<SurfaceComposerClient>& client,
160            const sp<IBinder>& id, uint32_t layerStack);
161
162    void setDisplaySurface(const sp<IBinder>& token,
163            const sp<IGraphicBufferProducer>& bufferProducer);
164    void setDisplayLayerStack(const sp<IBinder>& token, uint32_t layerStack);
165    void setDisplayProjection(const sp<IBinder>& token,
166            uint32_t orientation,
167            const Rect& layerStackRect,
168            const Rect& displayRect);
169
170    static void setAnimationTransaction() {
171        Composer::getInstance().setAnimationTransactionImpl();
172    }
173
174    static void openGlobalTransaction() {
175        Composer::getInstance().openGlobalTransactionImpl();
176    }
177
178    static void closeGlobalTransaction(bool synchronous) {
179        Composer::getInstance().closeGlobalTransactionImpl(synchronous);
180    }
181};
182
183ANDROID_SINGLETON_STATIC_INSTANCE(Composer);
184
185// ---------------------------------------------------------------------------
186
187sp<IBinder> Composer::createDisplay(const String8& displayName, bool secure) {
188    return ComposerService::getComposerService()->createDisplay(displayName,
189            secure);
190}
191
192void Composer::destroyDisplay(const sp<IBinder>& display) {
193    return ComposerService::getComposerService()->destroyDisplay(display);
194}
195
196sp<IBinder> Composer::getBuiltInDisplay(int32_t id) {
197    return ComposerService::getComposerService()->getBuiltInDisplay(id);
198}
199
200void Composer::openGlobalTransactionImpl() {
201    { // scope for the lock
202        Mutex::Autolock _l(mLock);
203        mTransactionNestCount += 1;
204    }
205}
206
207void Composer::closeGlobalTransactionImpl(bool synchronous) {
208    sp<ISurfaceComposer> sm(ComposerService::getComposerService());
209
210    Vector<ComposerState> transaction;
211    Vector<DisplayState> displayTransaction;
212    uint32_t flags = 0;
213
214    { // scope for the lock
215        Mutex::Autolock _l(mLock);
216        mForceSynchronous |= synchronous;
217        if (!mTransactionNestCount) {
218            ALOGW("At least one call to closeGlobalTransaction() was not matched by a prior "
219                    "call to openGlobalTransaction().");
220        } else if (--mTransactionNestCount) {
221            return;
222        }
223
224        transaction = mComposerStates;
225        mComposerStates.clear();
226
227        displayTransaction = mDisplayStates;
228        mDisplayStates.clear();
229
230        if (mForceSynchronous) {
231            flags |= ISurfaceComposer::eSynchronous;
232        }
233        if (mAnimation) {
234            flags |= ISurfaceComposer::eAnimation;
235        }
236
237        mForceSynchronous = false;
238        mAnimation = false;
239    }
240
241   sm->setTransactionState(transaction, displayTransaction, flags);
242}
243
244void Composer::setAnimationTransactionImpl() {
245    Mutex::Autolock _l(mLock);
246    mAnimation = true;
247}
248
249layer_state_t* Composer::getLayerStateLocked(
250        const sp<SurfaceComposerClient>& client, const sp<IBinder>& id) {
251
252    ComposerState s;
253    s.client = client->mClient;
254    s.state.surface = id;
255
256    ssize_t index = mComposerStates.indexOf(s);
257    if (index < 0) {
258        // we don't have it, add an initialized layer_state to our list
259        index = mComposerStates.add(s);
260    }
261
262    ComposerState* const out = mComposerStates.editArray();
263    return &(out[index].state);
264}
265
266status_t Composer::setPosition(const sp<SurfaceComposerClient>& client,
267        const sp<IBinder>& id, float x, float y) {
268    Mutex::Autolock _l(mLock);
269    layer_state_t* s = getLayerStateLocked(client, id);
270    if (!s)
271        return BAD_INDEX;
272    s->what |= layer_state_t::ePositionChanged;
273    s->x = x;
274    s->y = y;
275    return NO_ERROR;
276}
277
278status_t Composer::setSize(const sp<SurfaceComposerClient>& client,
279        const sp<IBinder>& id, uint32_t w, uint32_t h) {
280    Mutex::Autolock _l(mLock);
281    layer_state_t* s = getLayerStateLocked(client, id);
282    if (!s)
283        return BAD_INDEX;
284    s->what |= layer_state_t::eSizeChanged;
285    s->w = w;
286    s->h = h;
287
288    // Resizing a surface makes the transaction synchronous.
289    mForceSynchronous = true;
290
291    return NO_ERROR;
292}
293
294status_t Composer::setLayer(const sp<SurfaceComposerClient>& client,
295        const sp<IBinder>& id, int32_t z) {
296    Mutex::Autolock _l(mLock);
297    layer_state_t* s = getLayerStateLocked(client, id);
298    if (!s)
299        return BAD_INDEX;
300    s->what |= layer_state_t::eLayerChanged;
301    s->z = z;
302    return NO_ERROR;
303}
304
305status_t Composer::setFlags(const sp<SurfaceComposerClient>& client,
306        const sp<IBinder>& id, uint32_t flags,
307        uint32_t mask) {
308    Mutex::Autolock _l(mLock);
309    layer_state_t* s = getLayerStateLocked(client, id);
310    if (!s)
311        return BAD_INDEX;
312    s->what |= layer_state_t::eVisibilityChanged;
313    s->flags &= ~mask;
314    s->flags |= (flags & mask);
315    s->mask |= mask;
316    return NO_ERROR;
317}
318
319status_t Composer::setTransparentRegionHint(
320        const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
321        const Region& transparentRegion) {
322    Mutex::Autolock _l(mLock);
323    layer_state_t* s = getLayerStateLocked(client, id);
324    if (!s)
325        return BAD_INDEX;
326    s->what |= layer_state_t::eTransparentRegionChanged;
327    s->transparentRegion = transparentRegion;
328    return NO_ERROR;
329}
330
331status_t Composer::setAlpha(const sp<SurfaceComposerClient>& client,
332        const sp<IBinder>& id, float alpha) {
333    Mutex::Autolock _l(mLock);
334    layer_state_t* s = getLayerStateLocked(client, id);
335    if (!s)
336        return BAD_INDEX;
337    s->what |= layer_state_t::eAlphaChanged;
338    s->alpha = alpha;
339    return NO_ERROR;
340}
341
342status_t Composer::setLayerStack(const sp<SurfaceComposerClient>& client,
343        const sp<IBinder>& id, uint32_t layerStack) {
344    Mutex::Autolock _l(mLock);
345    layer_state_t* s = getLayerStateLocked(client, id);
346    if (!s)
347        return BAD_INDEX;
348    s->what |= layer_state_t::eLayerStackChanged;
349    s->layerStack = layerStack;
350    return NO_ERROR;
351}
352
353status_t Composer::setMatrix(const sp<SurfaceComposerClient>& client,
354        const sp<IBinder>& id, float dsdx, float dtdx,
355        float dsdy, float dtdy) {
356    Mutex::Autolock _l(mLock);
357    layer_state_t* s = getLayerStateLocked(client, id);
358    if (!s)
359        return BAD_INDEX;
360    s->what |= layer_state_t::eMatrixChanged;
361    layer_state_t::matrix22_t matrix;
362    matrix.dsdx = dsdx;
363    matrix.dtdx = dtdx;
364    matrix.dsdy = dsdy;
365    matrix.dtdy = dtdy;
366    s->matrix = matrix;
367    return NO_ERROR;
368}
369
370status_t Composer::setCrop(const sp<SurfaceComposerClient>& client,
371        const sp<IBinder>& id, const Rect& crop) {
372    Mutex::Autolock _l(mLock);
373    layer_state_t* s = getLayerStateLocked(client, id);
374    if (!s)
375        return BAD_INDEX;
376    s->what |= layer_state_t::eCropChanged;
377    s->crop = crop;
378    return NO_ERROR;
379}
380
381// ---------------------------------------------------------------------------
382
383DisplayState& Composer::getDisplayStateLocked(const sp<IBinder>& token) {
384    DisplayState s;
385    s.token = token;
386    ssize_t index = mDisplayStates.indexOf(s);
387    if (index < 0) {
388        // we don't have it, add an initialized layer_state to our list
389        s.what = 0;
390        index = mDisplayStates.add(s);
391    }
392    return mDisplayStates.editItemAt(index);
393}
394
395void Composer::setDisplaySurface(const sp<IBinder>& token,
396        const sp<IGraphicBufferProducer>& bufferProducer) {
397    Mutex::Autolock _l(mLock);
398    DisplayState& s(getDisplayStateLocked(token));
399    s.surface = bufferProducer;
400    s.what |= DisplayState::eSurfaceChanged;
401}
402
403void Composer::setDisplayLayerStack(const sp<IBinder>& token,
404        uint32_t layerStack) {
405    Mutex::Autolock _l(mLock);
406    DisplayState& s(getDisplayStateLocked(token));
407    s.layerStack = layerStack;
408    s.what |= DisplayState::eLayerStackChanged;
409}
410
411void Composer::setDisplayProjection(const sp<IBinder>& token,
412        uint32_t orientation,
413        const Rect& layerStackRect,
414        const Rect& displayRect) {
415    Mutex::Autolock _l(mLock);
416    DisplayState& s(getDisplayStateLocked(token));
417    s.orientation = orientation;
418    s.viewport = layerStackRect;
419    s.frame = displayRect;
420    s.what |= DisplayState::eDisplayProjectionChanged;
421    mForceSynchronous = true; // TODO: do we actually still need this?
422}
423
424// ---------------------------------------------------------------------------
425
426SurfaceComposerClient::SurfaceComposerClient()
427    : mStatus(NO_INIT), mComposer(Composer::getInstance())
428{
429}
430
431void SurfaceComposerClient::onFirstRef() {
432    sp<ISurfaceComposer> sm(ComposerService::getComposerService());
433    if (sm != 0) {
434        sp<ISurfaceComposerClient> conn = sm->createConnection();
435        if (conn != 0) {
436            mClient = conn;
437            mStatus = NO_ERROR;
438        }
439    }
440}
441
442SurfaceComposerClient::~SurfaceComposerClient() {
443    dispose();
444}
445
446status_t SurfaceComposerClient::initCheck() const {
447    return mStatus;
448}
449
450sp<IBinder> SurfaceComposerClient::connection() const {
451    return (mClient != 0) ? mClient->asBinder() : 0;
452}
453
454status_t SurfaceComposerClient::linkToComposerDeath(
455        const sp<IBinder::DeathRecipient>& recipient,
456        void* cookie, uint32_t flags) {
457    sp<ISurfaceComposer> sm(ComposerService::getComposerService());
458    return sm->asBinder()->linkToDeath(recipient, cookie, flags);
459}
460
461void SurfaceComposerClient::dispose() {
462    // this can be called more than once.
463    sp<ISurfaceComposerClient> client;
464    Mutex::Autolock _lm(mLock);
465    if (mClient != 0) {
466        client = mClient; // hold ref while lock is held
467        mClient.clear();
468    }
469    mStatus = NO_INIT;
470}
471
472sp<SurfaceControl> SurfaceComposerClient::createSurface(
473        const String8& name,
474        uint32_t w,
475        uint32_t h,
476        PixelFormat format,
477        uint32_t flags)
478{
479    sp<SurfaceControl> sur;
480    if (mStatus == NO_ERROR) {
481        sp<IBinder> handle;
482        sp<IGraphicBufferProducer> gbp;
483        status_t err = mClient->createSurface(name, w, h, format, flags,
484                &handle, &gbp);
485        ALOGE_IF(err, "SurfaceComposerClient::createSurface error %s", strerror(-err));
486        if (err == NO_ERROR) {
487            sur = new SurfaceControl(this, handle, gbp);
488        }
489    }
490    return sur;
491}
492
493sp<IBinder> SurfaceComposerClient::createDisplay(const String8& displayName,
494        bool secure) {
495    return Composer::getInstance().createDisplay(displayName, secure);
496}
497
498void SurfaceComposerClient::destroyDisplay(const sp<IBinder>& display) {
499    Composer::getInstance().destroyDisplay(display);
500}
501
502sp<IBinder> SurfaceComposerClient::getBuiltInDisplay(int32_t id) {
503    return Composer::getInstance().getBuiltInDisplay(id);
504}
505
506status_t SurfaceComposerClient::destroySurface(const sp<IBinder>& sid) {
507    if (mStatus != NO_ERROR)
508        return mStatus;
509    status_t err = mClient->destroySurface(sid);
510    return err;
511}
512
513inline Composer& SurfaceComposerClient::getComposer() {
514    return mComposer;
515}
516
517// ----------------------------------------------------------------------------
518
519void SurfaceComposerClient::openGlobalTransaction() {
520    Composer::openGlobalTransaction();
521}
522
523void SurfaceComposerClient::closeGlobalTransaction(bool synchronous) {
524    Composer::closeGlobalTransaction(synchronous);
525}
526
527void SurfaceComposerClient::setAnimationTransaction() {
528    Composer::setAnimationTransaction();
529}
530
531// ----------------------------------------------------------------------------
532
533status_t SurfaceComposerClient::setCrop(const sp<IBinder>& id, const Rect& crop) {
534    return getComposer().setCrop(this, id, crop);
535}
536
537status_t SurfaceComposerClient::setPosition(const sp<IBinder>& id, float x, float y) {
538    return getComposer().setPosition(this, id, x, y);
539}
540
541status_t SurfaceComposerClient::setSize(const sp<IBinder>& id, uint32_t w, uint32_t h) {
542    return getComposer().setSize(this, id, w, h);
543}
544
545status_t SurfaceComposerClient::setLayer(const sp<IBinder>& id, int32_t z) {
546    return getComposer().setLayer(this, id, z);
547}
548
549status_t SurfaceComposerClient::hide(const sp<IBinder>& id) {
550    return getComposer().setFlags(this, id,
551            layer_state_t::eLayerHidden,
552            layer_state_t::eLayerHidden);
553}
554
555status_t SurfaceComposerClient::show(const sp<IBinder>& id) {
556    return getComposer().setFlags(this, id,
557            0,
558            layer_state_t::eLayerHidden);
559}
560
561status_t SurfaceComposerClient::setFlags(const sp<IBinder>& id, uint32_t flags,
562        uint32_t mask) {
563    return getComposer().setFlags(this, id, flags, mask);
564}
565
566status_t SurfaceComposerClient::setTransparentRegionHint(const sp<IBinder>& id,
567        const Region& transparentRegion) {
568    return getComposer().setTransparentRegionHint(this, id, transparentRegion);
569}
570
571status_t SurfaceComposerClient::setAlpha(const sp<IBinder>& id, float alpha) {
572    return getComposer().setAlpha(this, id, alpha);
573}
574
575status_t SurfaceComposerClient::setLayerStack(const sp<IBinder>& id, uint32_t layerStack) {
576    return getComposer().setLayerStack(this, id, layerStack);
577}
578
579status_t SurfaceComposerClient::setMatrix(const sp<IBinder>& id, float dsdx, float dtdx,
580        float dsdy, float dtdy) {
581    return getComposer().setMatrix(this, id, dsdx, dtdx, dsdy, dtdy);
582}
583
584// ----------------------------------------------------------------------------
585
586void SurfaceComposerClient::setDisplaySurface(const sp<IBinder>& token,
587        const sp<IGraphicBufferProducer>& bufferProducer) {
588    Composer::getInstance().setDisplaySurface(token, bufferProducer);
589}
590
591void SurfaceComposerClient::setDisplayLayerStack(const sp<IBinder>& token,
592        uint32_t layerStack) {
593    Composer::getInstance().setDisplayLayerStack(token, layerStack);
594}
595
596void SurfaceComposerClient::setDisplayProjection(const sp<IBinder>& token,
597        uint32_t orientation,
598        const Rect& layerStackRect,
599        const Rect& displayRect) {
600    Composer::getInstance().setDisplayProjection(token, orientation,
601            layerStackRect, displayRect);
602}
603
604// ----------------------------------------------------------------------------
605
606status_t SurfaceComposerClient::getDisplayInfo(
607        const sp<IBinder>& display, DisplayInfo* info)
608{
609    return ComposerService::getComposerService()->getDisplayInfo(display, info);
610}
611
612void SurfaceComposerClient::blankDisplay(const sp<IBinder>& token) {
613    ComposerService::getComposerService()->blank(token);
614}
615
616void SurfaceComposerClient::unblankDisplay(const sp<IBinder>& token) {
617    ComposerService::getComposerService()->unblank(token);
618}
619
620// ----------------------------------------------------------------------------
621
622status_t ScreenshotClient::capture(
623        const sp<IBinder>& display,
624        const sp<IGraphicBufferProducer>& producer,
625        uint32_t reqWidth, uint32_t reqHeight,
626        uint32_t minLayerZ, uint32_t maxLayerZ) {
627    sp<ISurfaceComposer> s(ComposerService::getComposerService());
628    if (s == NULL) return NO_INIT;
629    return s->captureScreen(display, producer,
630            reqWidth, reqHeight, minLayerZ, maxLayerZ);
631}
632
633ScreenshotClient::ScreenshotClient()
634    : mHaveBuffer(false) {
635    memset(&mBuffer, 0, sizeof(mBuffer));
636}
637
638ScreenshotClient::~ScreenshotClient() {
639    ScreenshotClient::release();
640}
641
642sp<CpuConsumer> ScreenshotClient::getCpuConsumer() const {
643    if (mCpuConsumer == NULL) {
644        mBufferQueue = new BufferQueue();
645        mCpuConsumer = new CpuConsumer(mBufferQueue, 1);
646        mCpuConsumer->setName(String8("ScreenshotClient"));
647    }
648    return mCpuConsumer;
649}
650
651status_t ScreenshotClient::update(const sp<IBinder>& display,
652        uint32_t reqWidth, uint32_t reqHeight,
653        uint32_t minLayerZ, uint32_t maxLayerZ) {
654    sp<ISurfaceComposer> s(ComposerService::getComposerService());
655    if (s == NULL) return NO_INIT;
656    sp<CpuConsumer> cpuConsumer = getCpuConsumer();
657
658    if (mHaveBuffer) {
659        mCpuConsumer->unlockBuffer(mBuffer);
660        memset(&mBuffer, 0, sizeof(mBuffer));
661        mHaveBuffer = false;
662    }
663
664    status_t err = s->captureScreen(display, mBufferQueue,
665            reqWidth, reqHeight, minLayerZ, maxLayerZ);
666
667    if (err == NO_ERROR) {
668        err = mCpuConsumer->lockNextBuffer(&mBuffer);
669        if (err == NO_ERROR) {
670            mHaveBuffer = true;
671        }
672    }
673    return err;
674}
675
676status_t ScreenshotClient::update(const sp<IBinder>& display) {
677    return ScreenshotClient::update(display, 0, 0, 0, -1UL);
678}
679
680status_t ScreenshotClient::update(const sp<IBinder>& display,
681        uint32_t reqWidth, uint32_t reqHeight) {
682    return ScreenshotClient::update(display, reqWidth, reqHeight, 0, -1UL);
683}
684
685void ScreenshotClient::release() {
686    if (mHaveBuffer) {
687        mCpuConsumer->unlockBuffer(mBuffer);
688        memset(&mBuffer, 0, sizeof(mBuffer));
689        mHaveBuffer = false;
690    }
691    mCpuConsumer.clear();
692}
693
694void const* ScreenshotClient::getPixels() const {
695    return mBuffer.data;
696}
697
698uint32_t ScreenshotClient::getWidth() const {
699    return mBuffer.width;
700}
701
702uint32_t ScreenshotClient::getHeight() const {
703    return mBuffer.height;
704}
705
706PixelFormat ScreenshotClient::getFormat() const {
707    return mBuffer.format;
708}
709
710uint32_t ScreenshotClient::getStride() const {
711    return mBuffer.stride;
712}
713
714size_t ScreenshotClient::getSize() const {
715    return mBuffer.stride * mBuffer.height * bytesPerPixel(mBuffer.format);
716}
717
718// ----------------------------------------------------------------------------
719}; // namespace android
720