SurfaceComposerClient.cpp revision 8000d0694bc34bc17d869da546d8ff8790ae7be4 
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    sp<IBinder> getBuiltInDisplay(int32_t id);
139
140    status_t setPosition(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
141            float x, float y);
142    status_t setSize(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
143            uint32_t w, uint32_t h);
144    status_t setLayer(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
145            int32_t z);
146    status_t setFlags(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
147            uint32_t flags, uint32_t mask);
148    status_t setTransparentRegionHint(
149            const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
150            const Region& transparentRegion);
151    status_t setAlpha(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
152            float alpha);
153    status_t setMatrix(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
154            float dsdx, float dtdx, float dsdy, float dtdy);
155    status_t setOrientation(int orientation);
156    status_t setCrop(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
157            const Rect& crop);
158    status_t setLayerStack(const sp<SurfaceComposerClient>& client,
159            const sp<IBinder>& id, uint32_t layerStack);
160
161    void setDisplaySurface(const sp<IBinder>& token,
162            const sp<IGraphicBufferProducer>& bufferProducer);
163    void setDisplayLayerStack(const sp<IBinder>& token, uint32_t layerStack);
164    void setDisplayProjection(const sp<IBinder>& token,
165            uint32_t orientation,
166            const Rect& layerStackRect,
167            const Rect& displayRect);
168
169    static void setAnimationTransaction() {
170        Composer::getInstance().setAnimationTransactionImpl();
171    }
172
173    static void openGlobalTransaction() {
174        Composer::getInstance().openGlobalTransactionImpl();
175    }
176
177    static void closeGlobalTransaction(bool synchronous) {
178        Composer::getInstance().closeGlobalTransactionImpl(synchronous);
179    }
180};
181
182ANDROID_SINGLETON_STATIC_INSTANCE(Composer);
183
184// ---------------------------------------------------------------------------
185
186sp<IBinder> Composer::createDisplay(const String8& displayName, bool secure) {
187    return ComposerService::getComposerService()->createDisplay(displayName,
188            secure);
189}
190
191sp<IBinder> Composer::getBuiltInDisplay(int32_t id) {
192    return ComposerService::getComposerService()->getBuiltInDisplay(id);
193}
194
195void Composer::openGlobalTransactionImpl() {
196    { // scope for the lock
197        Mutex::Autolock _l(mLock);
198        mTransactionNestCount += 1;
199    }
200}
201
202void Composer::closeGlobalTransactionImpl(bool synchronous) {
203    sp<ISurfaceComposer> sm(ComposerService::getComposerService());
204
205    Vector<ComposerState> transaction;
206    Vector<DisplayState> displayTransaction;
207    uint32_t flags = 0;
208
209    { // scope for the lock
210        Mutex::Autolock _l(mLock);
211        mForceSynchronous |= synchronous;
212        if (!mTransactionNestCount) {
213            ALOGW("At least one call to closeGlobalTransaction() was not matched by a prior "
214                    "call to openGlobalTransaction().");
215        } else if (--mTransactionNestCount) {
216            return;
217        }
218
219        transaction = mComposerStates;
220        mComposerStates.clear();
221
222        displayTransaction = mDisplayStates;
223        mDisplayStates.clear();
224
225        if (mForceSynchronous) {
226            flags |= ISurfaceComposer::eSynchronous;
227        }
228        if (mAnimation) {
229            flags |= ISurfaceComposer::eAnimation;
230        }
231
232        mForceSynchronous = false;
233        mAnimation = false;
234    }
235
236   sm->setTransactionState(transaction, displayTransaction, flags);
237}
238
239void Composer::setAnimationTransactionImpl() {
240    Mutex::Autolock _l(mLock);
241    mAnimation = true;
242}
243
244layer_state_t* Composer::getLayerStateLocked(
245        const sp<SurfaceComposerClient>& client, const sp<IBinder>& id) {
246
247    ComposerState s;
248    s.client = client->mClient;
249    s.state.surface = id;
250
251    ssize_t index = mComposerStates.indexOf(s);
252    if (index < 0) {
253        // we don't have it, add an initialized layer_state to our list
254        index = mComposerStates.add(s);
255    }
256
257    ComposerState* const out = mComposerStates.editArray();
258    return &(out[index].state);
259}
260
261status_t Composer::setPosition(const sp<SurfaceComposerClient>& client,
262        const sp<IBinder>& id, float x, float y) {
263    Mutex::Autolock _l(mLock);
264    layer_state_t* s = getLayerStateLocked(client, id);
265    if (!s)
266        return BAD_INDEX;
267    s->what |= layer_state_t::ePositionChanged;
268    s->x = x;
269    s->y = y;
270    return NO_ERROR;
271}
272
273status_t Composer::setSize(const sp<SurfaceComposerClient>& client,
274        const sp<IBinder>& id, uint32_t w, uint32_t h) {
275    Mutex::Autolock _l(mLock);
276    layer_state_t* s = getLayerStateLocked(client, id);
277    if (!s)
278        return BAD_INDEX;
279    s->what |= layer_state_t::eSizeChanged;
280    s->w = w;
281    s->h = h;
282
283    // Resizing a surface makes the transaction synchronous.
284    mForceSynchronous = true;
285
286    return NO_ERROR;
287}
288
289status_t Composer::setLayer(const sp<SurfaceComposerClient>& client,
290        const sp<IBinder>& id, int32_t z) {
291    Mutex::Autolock _l(mLock);
292    layer_state_t* s = getLayerStateLocked(client, id);
293    if (!s)
294        return BAD_INDEX;
295    s->what |= layer_state_t::eLayerChanged;
296    s->z = z;
297    return NO_ERROR;
298}
299
300status_t Composer::setFlags(const sp<SurfaceComposerClient>& client,
301        const sp<IBinder>& id, uint32_t flags,
302        uint32_t mask) {
303    Mutex::Autolock _l(mLock);
304    layer_state_t* s = getLayerStateLocked(client, id);
305    if (!s)
306        return BAD_INDEX;
307    s->what |= layer_state_t::eVisibilityChanged;
308    s->flags &= ~mask;
309    s->flags |= (flags & mask);
310    s->mask |= mask;
311    return NO_ERROR;
312}
313
314status_t Composer::setTransparentRegionHint(
315        const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
316        const Region& transparentRegion) {
317    Mutex::Autolock _l(mLock);
318    layer_state_t* s = getLayerStateLocked(client, id);
319    if (!s)
320        return BAD_INDEX;
321    s->what |= layer_state_t::eTransparentRegionChanged;
322    s->transparentRegion = transparentRegion;
323    return NO_ERROR;
324}
325
326status_t Composer::setAlpha(const sp<SurfaceComposerClient>& client,
327        const sp<IBinder>& id, float alpha) {
328    Mutex::Autolock _l(mLock);
329    layer_state_t* s = getLayerStateLocked(client, id);
330    if (!s)
331        return BAD_INDEX;
332    s->what |= layer_state_t::eAlphaChanged;
333    s->alpha = alpha;
334    return NO_ERROR;
335}
336
337status_t Composer::setLayerStack(const sp<SurfaceComposerClient>& client,
338        const sp<IBinder>& id, uint32_t layerStack) {
339    Mutex::Autolock _l(mLock);
340    layer_state_t* s = getLayerStateLocked(client, id);
341    if (!s)
342        return BAD_INDEX;
343    s->what |= layer_state_t::eLayerStackChanged;
344    s->layerStack = layerStack;
345    return NO_ERROR;
346}
347
348status_t Composer::setMatrix(const sp<SurfaceComposerClient>& client,
349        const sp<IBinder>& id, float dsdx, float dtdx,
350        float dsdy, float dtdy) {
351    Mutex::Autolock _l(mLock);
352    layer_state_t* s = getLayerStateLocked(client, id);
353    if (!s)
354        return BAD_INDEX;
355    s->what |= layer_state_t::eMatrixChanged;
356    layer_state_t::matrix22_t matrix;
357    matrix.dsdx = dsdx;
358    matrix.dtdx = dtdx;
359    matrix.dsdy = dsdy;
360    matrix.dtdy = dtdy;
361    s->matrix = matrix;
362    return NO_ERROR;
363}
364
365status_t Composer::setCrop(const sp<SurfaceComposerClient>& client,
366        const sp<IBinder>& id, const Rect& crop) {
367    Mutex::Autolock _l(mLock);
368    layer_state_t* s = getLayerStateLocked(client, id);
369    if (!s)
370        return BAD_INDEX;
371    s->what |= layer_state_t::eCropChanged;
372    s->crop = crop;
373    return NO_ERROR;
374}
375
376// ---------------------------------------------------------------------------
377
378DisplayState& Composer::getDisplayStateLocked(const sp<IBinder>& token) {
379    DisplayState s;
380    s.token = token;
381    ssize_t index = mDisplayStates.indexOf(s);
382    if (index < 0) {
383        // we don't have it, add an initialized layer_state to our list
384        s.what = 0;
385        index = mDisplayStates.add(s);
386    }
387    return mDisplayStates.editItemAt(index);
388}
389
390void Composer::setDisplaySurface(const sp<IBinder>& token,
391        const sp<IGraphicBufferProducer>& bufferProducer) {
392    Mutex::Autolock _l(mLock);
393    DisplayState& s(getDisplayStateLocked(token));
394    s.surface = bufferProducer;
395    s.what |= DisplayState::eSurfaceChanged;
396}
397
398void Composer::setDisplayLayerStack(const sp<IBinder>& token,
399        uint32_t layerStack) {
400    Mutex::Autolock _l(mLock);
401    DisplayState& s(getDisplayStateLocked(token));
402    s.layerStack = layerStack;
403    s.what |= DisplayState::eLayerStackChanged;
404}
405
406void Composer::setDisplayProjection(const sp<IBinder>& token,
407        uint32_t orientation,
408        const Rect& layerStackRect,
409        const Rect& displayRect) {
410    Mutex::Autolock _l(mLock);
411    DisplayState& s(getDisplayStateLocked(token));
412    s.orientation = orientation;
413    s.viewport = layerStackRect;
414    s.frame = displayRect;
415    s.what |= DisplayState::eDisplayProjectionChanged;
416    mForceSynchronous = true; // TODO: do we actually still need this?
417}
418
419// ---------------------------------------------------------------------------
420
421SurfaceComposerClient::SurfaceComposerClient()
422    : mStatus(NO_INIT), mComposer(Composer::getInstance())
423{
424}
425
426void SurfaceComposerClient::onFirstRef() {
427    sp<ISurfaceComposer> sm(ComposerService::getComposerService());
428    if (sm != 0) {
429        sp<ISurfaceComposerClient> conn = sm->createConnection();
430        if (conn != 0) {
431            mClient = conn;
432            mStatus = NO_ERROR;
433        }
434    }
435}
436
437SurfaceComposerClient::~SurfaceComposerClient() {
438    dispose();
439}
440
441status_t SurfaceComposerClient::initCheck() const {
442    return mStatus;
443}
444
445sp<IBinder> SurfaceComposerClient::connection() const {
446    return (mClient != 0) ? mClient->asBinder() : 0;
447}
448
449status_t SurfaceComposerClient::linkToComposerDeath(
450        const sp<IBinder::DeathRecipient>& recipient,
451        void* cookie, uint32_t flags) {
452    sp<ISurfaceComposer> sm(ComposerService::getComposerService());
453    return sm->asBinder()->linkToDeath(recipient, cookie, flags);
454}
455
456void SurfaceComposerClient::dispose() {
457    // this can be called more than once.
458    sp<ISurfaceComposerClient> client;
459    Mutex::Autolock _lm(mLock);
460    if (mClient != 0) {
461        client = mClient; // hold ref while lock is held
462        mClient.clear();
463    }
464    mStatus = NO_INIT;
465}
466
467sp<SurfaceControl> SurfaceComposerClient::createSurface(
468        const String8& name,
469        uint32_t w,
470        uint32_t h,
471        PixelFormat format,
472        uint32_t flags)
473{
474    sp<SurfaceControl> sur;
475    if (mStatus == NO_ERROR) {
476        sp<IBinder> handle;
477        sp<IGraphicBufferProducer> gbp;
478        status_t err = mClient->createSurface(name, w, h, format, flags,
479                &handle, &gbp);
480        ALOGE_IF(err, "SurfaceComposerClient::createSurface error %s", strerror(-err));
481        if (err == NO_ERROR) {
482            sur = new SurfaceControl(this, handle, gbp);
483        }
484    }
485    return sur;
486}
487
488sp<IBinder> SurfaceComposerClient::createDisplay(const String8& displayName,
489        bool secure) {
490    return Composer::getInstance().createDisplay(displayName, secure);
491}
492
493sp<IBinder> SurfaceComposerClient::getBuiltInDisplay(int32_t id) {
494    return Composer::getInstance().getBuiltInDisplay(id);
495}
496
497status_t SurfaceComposerClient::destroySurface(const sp<IBinder>& sid) {
498    if (mStatus != NO_ERROR)
499        return mStatus;
500    status_t err = mClient->destroySurface(sid);
501    return err;
502}
503
504inline Composer& SurfaceComposerClient::getComposer() {
505    return mComposer;
506}
507
508// ----------------------------------------------------------------------------
509
510void SurfaceComposerClient::openGlobalTransaction() {
511    Composer::openGlobalTransaction();
512}
513
514void SurfaceComposerClient::closeGlobalTransaction(bool synchronous) {
515    Composer::closeGlobalTransaction(synchronous);
516}
517
518void SurfaceComposerClient::setAnimationTransaction() {
519    Composer::setAnimationTransaction();
520}
521
522// ----------------------------------------------------------------------------
523
524status_t SurfaceComposerClient::setCrop(const sp<IBinder>& id, const Rect& crop) {
525    return getComposer().setCrop(this, id, crop);
526}
527
528status_t SurfaceComposerClient::setPosition(const sp<IBinder>& id, float x, float y) {
529    return getComposer().setPosition(this, id, x, y);
530}
531
532status_t SurfaceComposerClient::setSize(const sp<IBinder>& id, uint32_t w, uint32_t h) {
533    return getComposer().setSize(this, id, w, h);
534}
535
536status_t SurfaceComposerClient::setLayer(const sp<IBinder>& id, int32_t z) {
537    return getComposer().setLayer(this, id, z);
538}
539
540status_t SurfaceComposerClient::hide(const sp<IBinder>& id) {
541    return getComposer().setFlags(this, id,
542            layer_state_t::eLayerHidden,
543            layer_state_t::eLayerHidden);
544}
545
546status_t SurfaceComposerClient::show(const sp<IBinder>& id) {
547    return getComposer().setFlags(this, id,
548            0,
549            layer_state_t::eLayerHidden);
550}
551
552status_t SurfaceComposerClient::setFlags(const sp<IBinder>& id, uint32_t flags,
553        uint32_t mask) {
554    return getComposer().setFlags(this, id, flags, mask);
555}
556
557status_t SurfaceComposerClient::setTransparentRegionHint(const sp<IBinder>& id,
558        const Region& transparentRegion) {
559    return getComposer().setTransparentRegionHint(this, id, transparentRegion);
560}
561
562status_t SurfaceComposerClient::setAlpha(const sp<IBinder>& id, float alpha) {
563    return getComposer().setAlpha(this, id, alpha);
564}
565
566status_t SurfaceComposerClient::setLayerStack(const sp<IBinder>& id, uint32_t layerStack) {
567    return getComposer().setLayerStack(this, id, layerStack);
568}
569
570status_t SurfaceComposerClient::setMatrix(const sp<IBinder>& id, float dsdx, float dtdx,
571        float dsdy, float dtdy) {
572    return getComposer().setMatrix(this, id, dsdx, dtdx, dsdy, dtdy);
573}
574
575// ----------------------------------------------------------------------------
576
577void SurfaceComposerClient::setDisplaySurface(const sp<IBinder>& token,
578        const sp<IGraphicBufferProducer>& bufferProducer) {
579    Composer::getInstance().setDisplaySurface(token, bufferProducer);
580}
581
582void SurfaceComposerClient::setDisplayLayerStack(const sp<IBinder>& token,
583        uint32_t layerStack) {
584    Composer::getInstance().setDisplayLayerStack(token, layerStack);
585}
586
587void SurfaceComposerClient::setDisplayProjection(const sp<IBinder>& token,
588        uint32_t orientation,
589        const Rect& layerStackRect,
590        const Rect& displayRect) {
591    Composer::getInstance().setDisplayProjection(token, orientation,
592            layerStackRect, displayRect);
593}
594
595// ----------------------------------------------------------------------------
596
597status_t SurfaceComposerClient::getDisplayInfo(
598        const sp<IBinder>& display, DisplayInfo* info)
599{
600    return ComposerService::getComposerService()->getDisplayInfo(display, info);
601}
602
603void SurfaceComposerClient::blankDisplay(const sp<IBinder>& token) {
604    ComposerService::getComposerService()->blank(token);
605}
606
607void SurfaceComposerClient::unblankDisplay(const sp<IBinder>& token) {
608    ComposerService::getComposerService()->unblank(token);
609}
610
611// ----------------------------------------------------------------------------
612
613status_t ScreenshotClient::capture(
614        const sp<IBinder>& display,
615        const sp<IGraphicBufferProducer>& producer,
616        uint32_t reqWidth, uint32_t reqHeight,
617        uint32_t minLayerZ, uint32_t maxLayerZ) {
618    sp<ISurfaceComposer> s(ComposerService::getComposerService());
619    if (s == NULL) return NO_INIT;
620    return s->captureScreen(display, producer,
621            reqWidth, reqHeight, minLayerZ, maxLayerZ,
622            false);
623}
624
625ScreenshotClient::ScreenshotClient()
626    : mHaveBuffer(false) {
627    memset(&mBuffer, 0, sizeof(mBuffer));
628}
629
630ScreenshotClient::~ScreenshotClient() {
631    ScreenshotClient::release();
632}
633
634sp<CpuConsumer> ScreenshotClient::getCpuConsumer() const {
635    if (mCpuConsumer == NULL) {
636        mCpuConsumer = new CpuConsumer(1);
637        mCpuConsumer->setName(String8("ScreenshotClient"));
638    }
639    return mCpuConsumer;
640}
641
642status_t ScreenshotClient::update(const sp<IBinder>& display,
643        uint32_t reqWidth, uint32_t reqHeight,
644        uint32_t minLayerZ, uint32_t maxLayerZ) {
645    sp<ISurfaceComposer> s(ComposerService::getComposerService());
646    if (s == NULL) return NO_INIT;
647    sp<CpuConsumer> cpuConsumer = getCpuConsumer();
648
649    if (mHaveBuffer) {
650        mCpuConsumer->unlockBuffer(mBuffer);
651        memset(&mBuffer, 0, sizeof(mBuffer));
652        mHaveBuffer = false;
653    }
654
655    status_t err = s->captureScreen(display,cpuConsumer->getBufferQueue(),
656            reqWidth, reqHeight, minLayerZ, maxLayerZ, true);
657
658    if (err == NO_ERROR) {
659        err = mCpuConsumer->lockNextBuffer(&mBuffer);
660        if (err == NO_ERROR) {
661            mHaveBuffer = true;
662        }
663    }
664    return err;
665}
666
667status_t ScreenshotClient::update(const sp<IBinder>& display) {
668    return ScreenshotClient::update(display, 0, 0, 0, -1UL);
669}
670
671status_t ScreenshotClient::update(const sp<IBinder>& display,
672        uint32_t reqWidth, uint32_t reqHeight) {
673    return ScreenshotClient::update(display, reqWidth, reqHeight, 0, -1UL);
674}
675
676void ScreenshotClient::release() {
677    if (mHaveBuffer) {
678        mCpuConsumer->unlockBuffer(mBuffer);
679        memset(&mBuffer, 0, sizeof(mBuffer));
680        mHaveBuffer = false;
681    }
682    mCpuConsumer.clear();
683}
684
685void const* ScreenshotClient::getPixels() const {
686    return mBuffer.data;
687}
688
689uint32_t ScreenshotClient::getWidth() const {
690    return mBuffer.width;
691}
692
693uint32_t ScreenshotClient::getHeight() const {
694    return mBuffer.height;
695}
696
697PixelFormat ScreenshotClient::getFormat() const {
698    return mBuffer.format;
699}
700
701uint32_t ScreenshotClient::getStride() const {
702    return mBuffer.stride;
703}
704
705size_t ScreenshotClient::getSize() const {
706    return mBuffer.stride * mBuffer.height * bytesPerPixel(mBuffer.format);
707}
708
709// ----------------------------------------------------------------------------
710}; // namespace android
711