Surface.cpp revision 812ed0644f8f8f71ca403f4e5793f0dbc1fcf9b2 
1/*
2 * Copyright (C) 2010 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 "Surface"
18#define ATRACE_TAG ATRACE_TAG_GRAPHICS
19//#define LOG_NDEBUG 0
20
21#include <android/native_window.h>
22
23#include <binder/Parcel.h>
24
25#include <utils/Log.h>
26#include <utils/Trace.h>
27#include <utils/NativeHandle.h>
28
29#include <ui/Fence.h>
30#include <ui/Region.h>
31
32#include <gui/IProducerListener.h>
33#include <gui/ISurfaceComposer.h>
34#include <gui/SurfaceComposerClient.h>
35#include <gui/GLConsumer.h>
36#include <gui/Surface.h>
37
38#include <private/gui/ComposerService.h>
39
40namespace android {
41
42Surface::Surface(
43        const sp<IGraphicBufferProducer>& bufferProducer,
44        bool controlledByApp)
45    : mGraphicBufferProducer(bufferProducer),
46      mGenerationNumber(0)
47{
48    // Initialize the ANativeWindow function pointers.
49    ANativeWindow::setSwapInterval  = hook_setSwapInterval;
50    ANativeWindow::dequeueBuffer    = hook_dequeueBuffer;
51    ANativeWindow::cancelBuffer     = hook_cancelBuffer;
52    ANativeWindow::queueBuffer      = hook_queueBuffer;
53    ANativeWindow::query            = hook_query;
54    ANativeWindow::perform          = hook_perform;
55
56    ANativeWindow::dequeueBuffer_DEPRECATED = hook_dequeueBuffer_DEPRECATED;
57    ANativeWindow::cancelBuffer_DEPRECATED  = hook_cancelBuffer_DEPRECATED;
58    ANativeWindow::lockBuffer_DEPRECATED    = hook_lockBuffer_DEPRECATED;
59    ANativeWindow::queueBuffer_DEPRECATED   = hook_queueBuffer_DEPRECATED;
60
61    const_cast<int&>(ANativeWindow::minSwapInterval) = 0;
62    const_cast<int&>(ANativeWindow::maxSwapInterval) = 1;
63
64    mReqWidth = 0;
65    mReqHeight = 0;
66    mReqFormat = 0;
67    mReqUsage = 0;
68    mTimestamp = NATIVE_WINDOW_TIMESTAMP_AUTO;
69    mDataSpace = HAL_DATASPACE_UNKNOWN;
70    mCrop.clear();
71    mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
72    mTransform = 0;
73    mStickyTransform = 0;
74    mDefaultWidth = 0;
75    mDefaultHeight = 0;
76    mUserWidth = 0;
77    mUserHeight = 0;
78    mTransformHint = 0;
79    mConsumerRunningBehind = false;
80    mConnectedToCpu = false;
81    mProducerControlledByApp = controlledByApp;
82    mSwapIntervalZero = false;
83}
84
85Surface::~Surface() {
86    if (mConnectedToCpu) {
87        Surface::disconnect(NATIVE_WINDOW_API_CPU);
88    }
89}
90
91sp<IGraphicBufferProducer> Surface::getIGraphicBufferProducer() const {
92    return mGraphicBufferProducer;
93}
94
95void Surface::setSidebandStream(const sp<NativeHandle>& stream) {
96    mGraphicBufferProducer->setSidebandStream(stream);
97}
98
99void Surface::allocateBuffers() {
100    uint32_t reqWidth = mReqWidth ? mReqWidth : mUserWidth;
101    uint32_t reqHeight = mReqHeight ? mReqHeight : mUserHeight;
102    mGraphicBufferProducer->allocateBuffers(mSwapIntervalZero, reqWidth,
103            reqHeight, mReqFormat, mReqUsage);
104}
105
106status_t Surface::setGenerationNumber(uint32_t generation) {
107    status_t result = mGraphicBufferProducer->setGenerationNumber(generation);
108    if (result == NO_ERROR) {
109        mGenerationNumber = generation;
110    }
111    return result;
112}
113
114int Surface::hook_setSwapInterval(ANativeWindow* window, int interval) {
115    Surface* c = getSelf(window);
116    return c->setSwapInterval(interval);
117}
118
119int Surface::hook_dequeueBuffer(ANativeWindow* window,
120        ANativeWindowBuffer** buffer, int* fenceFd) {
121    Surface* c = getSelf(window);
122    return c->dequeueBuffer(buffer, fenceFd);
123}
124
125int Surface::hook_cancelBuffer(ANativeWindow* window,
126        ANativeWindowBuffer* buffer, int fenceFd) {
127    Surface* c = getSelf(window);
128    return c->cancelBuffer(buffer, fenceFd);
129}
130
131int Surface::hook_queueBuffer(ANativeWindow* window,
132        ANativeWindowBuffer* buffer, int fenceFd) {
133    Surface* c = getSelf(window);
134    return c->queueBuffer(buffer, fenceFd);
135}
136
137int Surface::hook_dequeueBuffer_DEPRECATED(ANativeWindow* window,
138        ANativeWindowBuffer** buffer) {
139    Surface* c = getSelf(window);
140    ANativeWindowBuffer* buf;
141    int fenceFd = -1;
142    int result = c->dequeueBuffer(&buf, &fenceFd);
143    sp<Fence> fence(new Fence(fenceFd));
144    int waitResult = fence->waitForever("dequeueBuffer_DEPRECATED");
145    if (waitResult != OK) {
146        ALOGE("dequeueBuffer_DEPRECATED: Fence::wait returned an error: %d",
147                waitResult);
148        c->cancelBuffer(buf, -1);
149        return waitResult;
150    }
151    *buffer = buf;
152    return result;
153}
154
155int Surface::hook_cancelBuffer_DEPRECATED(ANativeWindow* window,
156        ANativeWindowBuffer* buffer) {
157    Surface* c = getSelf(window);
158    return c->cancelBuffer(buffer, -1);
159}
160
161int Surface::hook_lockBuffer_DEPRECATED(ANativeWindow* window,
162        ANativeWindowBuffer* buffer) {
163    Surface* c = getSelf(window);
164    return c->lockBuffer_DEPRECATED(buffer);
165}
166
167int Surface::hook_queueBuffer_DEPRECATED(ANativeWindow* window,
168        ANativeWindowBuffer* buffer) {
169    Surface* c = getSelf(window);
170    return c->queueBuffer(buffer, -1);
171}
172
173int Surface::hook_query(const ANativeWindow* window,
174                                int what, int* value) {
175    const Surface* c = getSelf(window);
176    return c->query(what, value);
177}
178
179int Surface::hook_perform(ANativeWindow* window, int operation, ...) {
180    va_list args;
181    va_start(args, operation);
182    Surface* c = getSelf(window);
183    return c->perform(operation, args);
184}
185
186int Surface::setSwapInterval(int interval) {
187    ATRACE_CALL();
188    // EGL specification states:
189    //  interval is silently clamped to minimum and maximum implementation
190    //  dependent values before being stored.
191
192    if (interval < minSwapInterval)
193        interval = minSwapInterval;
194
195    if (interval > maxSwapInterval)
196        interval = maxSwapInterval;
197
198    mSwapIntervalZero = (interval == 0);
199
200    return NO_ERROR;
201}
202
203int Surface::dequeueBuffer(android_native_buffer_t** buffer, int* fenceFd) {
204    ATRACE_CALL();
205    ALOGV("Surface::dequeueBuffer");
206
207    uint32_t reqWidth;
208    uint32_t reqHeight;
209    bool swapIntervalZero;
210    PixelFormat reqFormat;
211    uint32_t reqUsage;
212
213    {
214        Mutex::Autolock lock(mMutex);
215
216        reqWidth = mReqWidth ? mReqWidth : mUserWidth;
217        reqHeight = mReqHeight ? mReqHeight : mUserHeight;
218
219        swapIntervalZero = mSwapIntervalZero;
220        reqFormat = mReqFormat;
221        reqUsage = mReqUsage;
222    } // Drop the lock so that we can still touch the Surface while blocking in IGBP::dequeueBuffer
223
224    int buf = -1;
225    sp<Fence> fence;
226    status_t result = mGraphicBufferProducer->dequeueBuffer(&buf, &fence, swapIntervalZero,
227            reqWidth, reqHeight, reqFormat, reqUsage);
228
229    if (result < 0) {
230        ALOGV("dequeueBuffer: IGraphicBufferProducer::dequeueBuffer(%d, %d, %d, %d, %d)"
231             "failed: %d", swapIntervalZero, reqWidth, reqHeight, reqFormat,
232             reqUsage, result);
233        return result;
234    }
235
236    Mutex::Autolock lock(mMutex);
237
238    sp<GraphicBuffer>& gbuf(mSlots[buf].buffer);
239
240    // this should never happen
241    ALOGE_IF(fence == NULL, "Surface::dequeueBuffer: received null Fence! buf=%d", buf);
242
243    if (result & IGraphicBufferProducer::RELEASE_ALL_BUFFERS) {
244        freeAllBuffers();
245    }
246
247    if ((result & IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) || gbuf == 0) {
248        result = mGraphicBufferProducer->requestBuffer(buf, &gbuf);
249        if (result != NO_ERROR) {
250            ALOGE("dequeueBuffer: IGraphicBufferProducer::requestBuffer failed: %d", result);
251            mGraphicBufferProducer->cancelBuffer(buf, fence);
252            return result;
253        }
254    }
255
256    if (fence->isValid()) {
257        *fenceFd = fence->dup();
258        if (*fenceFd == -1) {
259            ALOGE("dequeueBuffer: error duping fence: %d", errno);
260            // dup() should never fail; something is badly wrong. Soldier on
261            // and hope for the best; the worst that should happen is some
262            // visible corruption that lasts until the next frame.
263        }
264    } else {
265        *fenceFd = -1;
266    }
267
268    *buffer = gbuf.get();
269    return OK;
270}
271
272int Surface::cancelBuffer(android_native_buffer_t* buffer,
273        int fenceFd) {
274    ATRACE_CALL();
275    ALOGV("Surface::cancelBuffer");
276    Mutex::Autolock lock(mMutex);
277    int i = getSlotFromBufferLocked(buffer);
278    if (i < 0) {
279        if (fenceFd >= 0) {
280            close(fenceFd);
281        }
282        return i;
283    }
284    sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
285    mGraphicBufferProducer->cancelBuffer(i, fence);
286    return OK;
287}
288
289int Surface::getSlotFromBufferLocked(
290        android_native_buffer_t* buffer) const {
291    for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
292        if (mSlots[i].buffer != NULL &&
293                mSlots[i].buffer->handle == buffer->handle) {
294            return i;
295        }
296    }
297    ALOGE("getSlotFromBufferLocked: unknown buffer: %p", buffer->handle);
298    return BAD_VALUE;
299}
300
301int Surface::lockBuffer_DEPRECATED(android_native_buffer_t* buffer __attribute__((unused))) {
302    ALOGV("Surface::lockBuffer");
303    Mutex::Autolock lock(mMutex);
304    return OK;
305}
306
307int Surface::queueBuffer(android_native_buffer_t* buffer, int fenceFd) {
308    ATRACE_CALL();
309    ALOGV("Surface::queueBuffer");
310    Mutex::Autolock lock(mMutex);
311    int64_t timestamp;
312    bool isAutoTimestamp = false;
313    if (mTimestamp == NATIVE_WINDOW_TIMESTAMP_AUTO) {
314        timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
315        isAutoTimestamp = true;
316        ALOGV("Surface::queueBuffer making up timestamp: %.2f ms",
317            timestamp / 1000000.f);
318    } else {
319        timestamp = mTimestamp;
320    }
321    int i = getSlotFromBufferLocked(buffer);
322    if (i < 0) {
323        if (fenceFd >= 0) {
324            close(fenceFd);
325        }
326        return i;
327    }
328
329
330    // Make sure the crop rectangle is entirely inside the buffer.
331    Rect crop;
332    mCrop.intersect(Rect(buffer->width, buffer->height), &crop);
333
334    sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
335    IGraphicBufferProducer::QueueBufferOutput output;
336    IGraphicBufferProducer::QueueBufferInput input(timestamp, isAutoTimestamp,
337            mDataSpace, crop, mScalingMode, mTransform ^ mStickyTransform,
338            mSwapIntervalZero, fence, mStickyTransform);
339
340    if (mConnectedToCpu || mDirtyRegion.bounds() == Rect::INVALID_RECT) {
341        input.setSurfaceDamage(Region::INVALID_REGION);
342    } else {
343        // The surface damage was specified using the OpenGL ES convention of
344        // the origin being in the bottom-left corner. Here we flip to the
345        // convention that the rest of the system uses (top-left corner) by
346        // subtracting all top/bottom coordinates from the buffer height.
347        int height = buffer->height;
348        if ((mTransform ^ mStickyTransform) & NATIVE_WINDOW_TRANSFORM_ROT_90) {
349            height = buffer->width;
350        }
351        Region flippedRegion;
352        for (auto rect : mDirtyRegion) {
353            auto top = height - rect.bottom;
354            auto bottom = height - rect.top;
355            Rect flippedRect{rect.left, top, rect.right, bottom};
356            flippedRegion.orSelf(flippedRect);
357        }
358
359        input.setSurfaceDamage(flippedRegion);
360    }
361
362    status_t err = mGraphicBufferProducer->queueBuffer(i, input, &output);
363    if (err != OK)  {
364        ALOGE("queueBuffer: error queuing buffer to SurfaceTexture, %d", err);
365    }
366    uint32_t numPendingBuffers = 0;
367    uint32_t hint = 0;
368    output.deflate(&mDefaultWidth, &mDefaultHeight, &hint,
369            &numPendingBuffers);
370
371    // Disable transform hint if sticky transform is set.
372    if (mStickyTransform == 0) {
373        mTransformHint = hint;
374    }
375
376    mConsumerRunningBehind = (numPendingBuffers >= 2);
377
378    if (!mConnectedToCpu) {
379        // Clear surface damage back to full-buffer
380        mDirtyRegion = Region::INVALID_REGION;
381    }
382
383    return err;
384}
385
386int Surface::query(int what, int* value) const {
387    ATRACE_CALL();
388    ALOGV("Surface::query");
389    { // scope for the lock
390        Mutex::Autolock lock(mMutex);
391        switch (what) {
392            case NATIVE_WINDOW_FORMAT:
393                if (mReqFormat) {
394                    *value = static_cast<int>(mReqFormat);
395                    return NO_ERROR;
396                }
397                break;
398            case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER: {
399                sp<ISurfaceComposer> composer(
400                        ComposerService::getComposerService());
401                if (composer->authenticateSurfaceTexture(mGraphicBufferProducer)) {
402                    *value = 1;
403                } else {
404                    *value = 0;
405                }
406                return NO_ERROR;
407            }
408            case NATIVE_WINDOW_CONCRETE_TYPE:
409                *value = NATIVE_WINDOW_SURFACE;
410                return NO_ERROR;
411            case NATIVE_WINDOW_DEFAULT_WIDTH:
412                *value = static_cast<int>(
413                        mUserWidth ? mUserWidth : mDefaultWidth);
414                return NO_ERROR;
415            case NATIVE_WINDOW_DEFAULT_HEIGHT:
416                *value = static_cast<int>(
417                        mUserHeight ? mUserHeight : mDefaultHeight);
418                return NO_ERROR;
419            case NATIVE_WINDOW_TRANSFORM_HINT:
420                *value = static_cast<int>(mTransformHint);
421                return NO_ERROR;
422            case NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND: {
423                status_t err = NO_ERROR;
424                if (!mConsumerRunningBehind) {
425                    *value = 0;
426                } else {
427                    err = mGraphicBufferProducer->query(what, value);
428                    if (err == NO_ERROR) {
429                        mConsumerRunningBehind = *value;
430                    }
431                }
432                return err;
433            }
434        }
435    }
436    return mGraphicBufferProducer->query(what, value);
437}
438
439int Surface::perform(int operation, va_list args)
440{
441    int res = NO_ERROR;
442    switch (operation) {
443    case NATIVE_WINDOW_CONNECT:
444        // deprecated. must return NO_ERROR.
445        break;
446    case NATIVE_WINDOW_DISCONNECT:
447        // deprecated. must return NO_ERROR.
448        break;
449    case NATIVE_WINDOW_SET_USAGE:
450        res = dispatchSetUsage(args);
451        break;
452    case NATIVE_WINDOW_SET_CROP:
453        res = dispatchSetCrop(args);
454        break;
455    case NATIVE_WINDOW_SET_BUFFER_COUNT:
456        res = dispatchSetBufferCount(args);
457        break;
458    case NATIVE_WINDOW_SET_BUFFERS_GEOMETRY:
459        res = dispatchSetBuffersGeometry(args);
460        break;
461    case NATIVE_WINDOW_SET_BUFFERS_TRANSFORM:
462        res = dispatchSetBuffersTransform(args);
463        break;
464    case NATIVE_WINDOW_SET_BUFFERS_STICKY_TRANSFORM:
465        res = dispatchSetBuffersStickyTransform(args);
466        break;
467    case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
468        res = dispatchSetBuffersTimestamp(args);
469        break;
470    case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS:
471        res = dispatchSetBuffersDimensions(args);
472        break;
473    case NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS:
474        res = dispatchSetBuffersUserDimensions(args);
475        break;
476    case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
477        res = dispatchSetBuffersFormat(args);
478        break;
479    case NATIVE_WINDOW_LOCK:
480        res = dispatchLock(args);
481        break;
482    case NATIVE_WINDOW_UNLOCK_AND_POST:
483        res = dispatchUnlockAndPost(args);
484        break;
485    case NATIVE_WINDOW_SET_SCALING_MODE:
486        res = dispatchSetScalingMode(args);
487        break;
488    case NATIVE_WINDOW_API_CONNECT:
489        res = dispatchConnect(args);
490        break;
491    case NATIVE_WINDOW_API_DISCONNECT:
492        res = dispatchDisconnect(args);
493        break;
494    case NATIVE_WINDOW_SET_SIDEBAND_STREAM:
495        res = dispatchSetSidebandStream(args);
496        break;
497    case NATIVE_WINDOW_SET_BUFFERS_DATASPACE:
498        res = dispatchSetBuffersDataSpace(args);
499        break;
500    case NATIVE_WINDOW_SET_SURFACE_DAMAGE:
501        res = dispatchSetSurfaceDamage(args);
502        break;
503    default:
504        res = NAME_NOT_FOUND;
505        break;
506    }
507    return res;
508}
509
510int Surface::dispatchConnect(va_list args) {
511    int api = va_arg(args, int);
512    return connect(api);
513}
514
515int Surface::dispatchDisconnect(va_list args) {
516    int api = va_arg(args, int);
517    return disconnect(api);
518}
519
520int Surface::dispatchSetUsage(va_list args) {
521    int usage = va_arg(args, int);
522    return setUsage(static_cast<uint32_t>(usage));
523}
524
525int Surface::dispatchSetCrop(va_list args) {
526    android_native_rect_t const* rect = va_arg(args, android_native_rect_t*);
527    return setCrop(reinterpret_cast<Rect const*>(rect));
528}
529
530int Surface::dispatchSetBufferCount(va_list args) {
531    size_t bufferCount = va_arg(args, size_t);
532    return setBufferCount(static_cast<int32_t>(bufferCount));
533}
534
535int Surface::dispatchSetBuffersGeometry(va_list args) {
536    uint32_t width = va_arg(args, uint32_t);
537    uint32_t height = va_arg(args, uint32_t);
538    PixelFormat format = va_arg(args, PixelFormat);
539    int err = setBuffersDimensions(width, height);
540    if (err != 0) {
541        return err;
542    }
543    return setBuffersFormat(format);
544}
545
546int Surface::dispatchSetBuffersDimensions(va_list args) {
547    uint32_t width = va_arg(args, uint32_t);
548    uint32_t height = va_arg(args, uint32_t);
549    return setBuffersDimensions(width, height);
550}
551
552int Surface::dispatchSetBuffersUserDimensions(va_list args) {
553    uint32_t width = va_arg(args, uint32_t);
554    uint32_t height = va_arg(args, uint32_t);
555    return setBuffersUserDimensions(width, height);
556}
557
558int Surface::dispatchSetBuffersFormat(va_list args) {
559    PixelFormat format = va_arg(args, PixelFormat);
560    return setBuffersFormat(format);
561}
562
563int Surface::dispatchSetScalingMode(va_list args) {
564    int mode = va_arg(args, int);
565    return setScalingMode(mode);
566}
567
568int Surface::dispatchSetBuffersTransform(va_list args) {
569    uint32_t transform = va_arg(args, uint32_t);
570    return setBuffersTransform(transform);
571}
572
573int Surface::dispatchSetBuffersStickyTransform(va_list args) {
574    uint32_t transform = va_arg(args, uint32_t);
575    return setBuffersStickyTransform(transform);
576}
577
578int Surface::dispatchSetBuffersTimestamp(va_list args) {
579    int64_t timestamp = va_arg(args, int64_t);
580    return setBuffersTimestamp(timestamp);
581}
582
583int Surface::dispatchLock(va_list args) {
584    ANativeWindow_Buffer* outBuffer = va_arg(args, ANativeWindow_Buffer*);
585    ARect* inOutDirtyBounds = va_arg(args, ARect*);
586    return lock(outBuffer, inOutDirtyBounds);
587}
588
589int Surface::dispatchUnlockAndPost(va_list args __attribute__((unused))) {
590    return unlockAndPost();
591}
592
593int Surface::dispatchSetSidebandStream(va_list args) {
594    native_handle_t* sH = va_arg(args, native_handle_t*);
595    sp<NativeHandle> sidebandHandle = NativeHandle::create(sH, false);
596    setSidebandStream(sidebandHandle);
597    return OK;
598}
599
600int Surface::dispatchSetBuffersDataSpace(va_list args) {
601    android_dataspace dataspace =
602            static_cast<android_dataspace>(va_arg(args, int));
603    return setBuffersDataSpace(dataspace);
604}
605
606int Surface::dispatchSetSurfaceDamage(va_list args) {
607    android_native_rect_t* rects = va_arg(args, android_native_rect_t*);
608    size_t numRects = va_arg(args, size_t);
609    setSurfaceDamage(rects, numRects);
610    return NO_ERROR;
611}
612
613int Surface::connect(int api) {
614    static sp<IProducerListener> listener = new DummyProducerListener();
615    return connect(api, listener);
616}
617
618int Surface::connect(int api, const sp<IProducerListener>& listener) {
619    ATRACE_CALL();
620    ALOGV("Surface::connect");
621    Mutex::Autolock lock(mMutex);
622    IGraphicBufferProducer::QueueBufferOutput output;
623    int err = mGraphicBufferProducer->connect(listener, api, mProducerControlledByApp, &output);
624    if (err == NO_ERROR) {
625        uint32_t numPendingBuffers = 0;
626        uint32_t hint = 0;
627        output.deflate(&mDefaultWidth, &mDefaultHeight, &hint,
628                &numPendingBuffers);
629
630        // Disable transform hint if sticky transform is set.
631        if (mStickyTransform == 0) {
632            mTransformHint = hint;
633        }
634
635        mConsumerRunningBehind = (numPendingBuffers >= 2);
636    }
637    if (!err && api == NATIVE_WINDOW_API_CPU) {
638        mConnectedToCpu = true;
639        // Clear the dirty region in case we're switching from a non-CPU API
640        mDirtyRegion.clear();
641    } else if (!err) {
642        // Initialize the dirty region for tracking surface damage
643        mDirtyRegion = Region::INVALID_REGION;
644    }
645
646    return err;
647}
648
649
650int Surface::disconnect(int api) {
651    ATRACE_CALL();
652    ALOGV("Surface::disconnect");
653    Mutex::Autolock lock(mMutex);
654    freeAllBuffers();
655    int err = mGraphicBufferProducer->disconnect(api);
656    if (!err) {
657        mReqFormat = 0;
658        mReqWidth = 0;
659        mReqHeight = 0;
660        mReqUsage = 0;
661        mCrop.clear();
662        mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
663        mTransform = 0;
664        mStickyTransform = 0;
665
666        if (api == NATIVE_WINDOW_API_CPU) {
667            mConnectedToCpu = false;
668        }
669    }
670    return err;
671}
672
673int Surface::detachNextBuffer(sp<GraphicBuffer>* outBuffer,
674        sp<Fence>* outFence) {
675    ATRACE_CALL();
676    ALOGV("Surface::detachNextBuffer");
677
678    if (outBuffer == NULL || outFence == NULL) {
679        return BAD_VALUE;
680    }
681
682    Mutex::Autolock lock(mMutex);
683
684    sp<GraphicBuffer> buffer(NULL);
685    sp<Fence> fence(NULL);
686    status_t result = mGraphicBufferProducer->detachNextBuffer(
687            &buffer, &fence);
688    if (result != NO_ERROR) {
689        return result;
690    }
691
692    *outBuffer = buffer;
693    if (fence != NULL && fence->isValid()) {
694        *outFence = fence;
695    } else {
696        *outFence = Fence::NO_FENCE;
697    }
698
699    return NO_ERROR;
700}
701
702int Surface::attachBuffer(ANativeWindowBuffer* buffer)
703{
704    ATRACE_CALL();
705    ALOGV("Surface::attachBuffer");
706
707    Mutex::Autolock lock(mMutex);
708
709    sp<GraphicBuffer> graphicBuffer(static_cast<GraphicBuffer*>(buffer));
710    uint32_t priorGeneration = graphicBuffer->mGenerationNumber;
711    graphicBuffer->mGenerationNumber = mGenerationNumber;
712    int32_t attachedSlot = -1;
713    status_t result = mGraphicBufferProducer->attachBuffer(
714            &attachedSlot, graphicBuffer);
715    if (result != NO_ERROR) {
716        ALOGE("attachBuffer: IGraphicBufferProducer call failed (%d)", result);
717        graphicBuffer->mGenerationNumber = priorGeneration;
718        return result;
719    }
720    mSlots[attachedSlot].buffer = graphicBuffer;
721
722    return NO_ERROR;
723}
724
725int Surface::setUsage(uint32_t reqUsage)
726{
727    ALOGV("Surface::setUsage");
728    Mutex::Autolock lock(mMutex);
729    mReqUsage = reqUsage;
730    return OK;
731}
732
733int Surface::setCrop(Rect const* rect)
734{
735    ATRACE_CALL();
736
737    Rect realRect;
738    if (rect == NULL || rect->isEmpty()) {
739        realRect.clear();
740    } else {
741        realRect = *rect;
742    }
743
744    ALOGV("Surface::setCrop rect=[%d %d %d %d]",
745            realRect.left, realRect.top, realRect.right, realRect.bottom);
746
747    Mutex::Autolock lock(mMutex);
748    mCrop = realRect;
749    return NO_ERROR;
750}
751
752int Surface::setBufferCount(int bufferCount)
753{
754    ATRACE_CALL();
755    ALOGV("Surface::setBufferCount");
756    Mutex::Autolock lock(mMutex);
757
758    status_t err = mGraphicBufferProducer->setBufferCount(bufferCount);
759    ALOGE_IF(err, "IGraphicBufferProducer::setBufferCount(%d) returned %s",
760            bufferCount, strerror(-err));
761
762    if (err == NO_ERROR) {
763        freeAllBuffers();
764    }
765
766    return err;
767}
768
769int Surface::setBuffersDimensions(uint32_t width, uint32_t height)
770{
771    ATRACE_CALL();
772    ALOGV("Surface::setBuffersDimensions");
773
774    if ((width && !height) || (!width && height))
775        return BAD_VALUE;
776
777    Mutex::Autolock lock(mMutex);
778    mReqWidth = width;
779    mReqHeight = height;
780    return NO_ERROR;
781}
782
783int Surface::setBuffersUserDimensions(uint32_t width, uint32_t height)
784{
785    ATRACE_CALL();
786    ALOGV("Surface::setBuffersUserDimensions");
787
788    if ((width && !height) || (!width && height))
789        return BAD_VALUE;
790
791    Mutex::Autolock lock(mMutex);
792    mUserWidth = width;
793    mUserHeight = height;
794    return NO_ERROR;
795}
796
797int Surface::setBuffersFormat(PixelFormat format)
798{
799    ALOGV("Surface::setBuffersFormat");
800
801    Mutex::Autolock lock(mMutex);
802    mReqFormat = format;
803    return NO_ERROR;
804}
805
806int Surface::setScalingMode(int mode)
807{
808    ATRACE_CALL();
809    ALOGV("Surface::setScalingMode(%d)", mode);
810
811    switch (mode) {
812        case NATIVE_WINDOW_SCALING_MODE_FREEZE:
813        case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
814        case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP:
815            break;
816        default:
817            ALOGE("unknown scaling mode: %d", mode);
818            return BAD_VALUE;
819    }
820
821    Mutex::Autolock lock(mMutex);
822    mScalingMode = mode;
823    return NO_ERROR;
824}
825
826int Surface::setBuffersTransform(uint32_t transform)
827{
828    ATRACE_CALL();
829    ALOGV("Surface::setBuffersTransform");
830    Mutex::Autolock lock(mMutex);
831    mTransform = transform;
832    return NO_ERROR;
833}
834
835int Surface::setBuffersStickyTransform(uint32_t transform)
836{
837    ATRACE_CALL();
838    ALOGV("Surface::setBuffersStickyTransform");
839    Mutex::Autolock lock(mMutex);
840    mStickyTransform = transform;
841    return NO_ERROR;
842}
843
844int Surface::setBuffersTimestamp(int64_t timestamp)
845{
846    ALOGV("Surface::setBuffersTimestamp");
847    Mutex::Autolock lock(mMutex);
848    mTimestamp = timestamp;
849    return NO_ERROR;
850}
851
852int Surface::setBuffersDataSpace(android_dataspace dataSpace)
853{
854    ALOGV("Surface::setBuffersDataSpace");
855    Mutex::Autolock lock(mMutex);
856    mDataSpace = dataSpace;
857    return NO_ERROR;
858}
859
860void Surface::freeAllBuffers() {
861    for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
862        mSlots[i].buffer = 0;
863    }
864}
865
866void Surface::setSurfaceDamage(android_native_rect_t* rects, size_t numRects) {
867    ATRACE_CALL();
868    ALOGV("Surface::setSurfaceDamage");
869    Mutex::Autolock lock(mMutex);
870
871    if (mConnectedToCpu || numRects == 0) {
872        mDirtyRegion = Region::INVALID_REGION;
873        return;
874    }
875
876    mDirtyRegion.clear();
877    for (size_t r = 0; r < numRects; ++r) {
878        // We intentionally flip top and bottom here, since because they're
879        // specified with a bottom-left origin, top > bottom, which fails
880        // validation in the Region class. We will fix this up when we flip to a
881        // top-left origin in queueBuffer.
882        Rect rect(rects[r].left, rects[r].bottom, rects[r].right, rects[r].top);
883        mDirtyRegion.orSelf(rect);
884    }
885}
886
887// ----------------------------------------------------------------------
888// the lock/unlock APIs must be used from the same thread
889
890static status_t copyBlt(
891        const sp<GraphicBuffer>& dst,
892        const sp<GraphicBuffer>& src,
893        const Region& reg)
894{
895    // src and dst with, height and format must be identical. no verification
896    // is done here.
897    status_t err;
898    uint8_t* src_bits = NULL;
899    err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(),
900            reinterpret_cast<void**>(&src_bits));
901    ALOGE_IF(err, "error locking src buffer %s", strerror(-err));
902
903    uint8_t* dst_bits = NULL;
904    err = dst->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(),
905            reinterpret_cast<void**>(&dst_bits));
906    ALOGE_IF(err, "error locking dst buffer %s", strerror(-err));
907
908    Region::const_iterator head(reg.begin());
909    Region::const_iterator tail(reg.end());
910    if (head != tail && src_bits && dst_bits) {
911        const size_t bpp = bytesPerPixel(src->format);
912        const size_t dbpr = static_cast<uint32_t>(dst->stride) * bpp;
913        const size_t sbpr = static_cast<uint32_t>(src->stride) * bpp;
914
915        while (head != tail) {
916            const Rect& r(*head++);
917            int32_t h = r.height();
918            if (h <= 0) continue;
919            size_t size = static_cast<uint32_t>(r.width()) * bpp;
920            uint8_t const * s = src_bits +
921                    static_cast<uint32_t>(r.left + src->stride * r.top) * bpp;
922            uint8_t       * d = dst_bits +
923                    static_cast<uint32_t>(r.left + dst->stride * r.top) * bpp;
924            if (dbpr==sbpr && size==sbpr) {
925                size *= static_cast<size_t>(h);
926                h = 1;
927            }
928            do {
929                memcpy(d, s, size);
930                d += dbpr;
931                s += sbpr;
932            } while (--h > 0);
933        }
934    }
935
936    if (src_bits)
937        src->unlock();
938
939    if (dst_bits)
940        dst->unlock();
941
942    return err;
943}
944
945// ----------------------------------------------------------------------------
946
947status_t Surface::lock(
948        ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds)
949{
950    if (mLockedBuffer != 0) {
951        ALOGE("Surface::lock failed, already locked");
952        return INVALID_OPERATION;
953    }
954
955    if (!mConnectedToCpu) {
956        int err = Surface::connect(NATIVE_WINDOW_API_CPU);
957        if (err) {
958            return err;
959        }
960        // we're intending to do software rendering from this point
961        setUsage(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
962    }
963
964    ANativeWindowBuffer* out;
965    int fenceFd = -1;
966    status_t err = dequeueBuffer(&out, &fenceFd);
967    ALOGE_IF(err, "dequeueBuffer failed (%s)", strerror(-err));
968    if (err == NO_ERROR) {
969        sp<GraphicBuffer> backBuffer(GraphicBuffer::getSelf(out));
970        const Rect bounds(backBuffer->width, backBuffer->height);
971
972        Region newDirtyRegion;
973        if (inOutDirtyBounds) {
974            newDirtyRegion.set(static_cast<Rect const&>(*inOutDirtyBounds));
975            newDirtyRegion.andSelf(bounds);
976        } else {
977            newDirtyRegion.set(bounds);
978        }
979
980        // figure out if we can copy the frontbuffer back
981        const sp<GraphicBuffer>& frontBuffer(mPostedBuffer);
982        const bool canCopyBack = (frontBuffer != 0 &&
983                backBuffer->width  == frontBuffer->width &&
984                backBuffer->height == frontBuffer->height &&
985                backBuffer->format == frontBuffer->format);
986
987        if (canCopyBack) {
988            // copy the area that is invalid and not repainted this round
989            const Region copyback(mDirtyRegion.subtract(newDirtyRegion));
990            if (!copyback.isEmpty())
991                copyBlt(backBuffer, frontBuffer, copyback);
992        } else {
993            // if we can't copy-back anything, modify the user's dirty
994            // region to make sure they redraw the whole buffer
995            newDirtyRegion.set(bounds);
996            mDirtyRegion.clear();
997            Mutex::Autolock lock(mMutex);
998            for (size_t i=0 ; i<NUM_BUFFER_SLOTS ; i++) {
999                mSlots[i].dirtyRegion.clear();
1000            }
1001        }
1002
1003
1004        { // scope for the lock
1005            Mutex::Autolock lock(mMutex);
1006            int backBufferSlot(getSlotFromBufferLocked(backBuffer.get()));
1007            if (backBufferSlot >= 0) {
1008                Region& dirtyRegion(mSlots[backBufferSlot].dirtyRegion);
1009                mDirtyRegion.subtract(dirtyRegion);
1010                dirtyRegion = newDirtyRegion;
1011            }
1012        }
1013
1014        mDirtyRegion.orSelf(newDirtyRegion);
1015        if (inOutDirtyBounds) {
1016            *inOutDirtyBounds = newDirtyRegion.getBounds();
1017        }
1018
1019        void* vaddr;
1020        status_t res = backBuffer->lockAsync(
1021                GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
1022                newDirtyRegion.bounds(), &vaddr, fenceFd);
1023
1024        ALOGW_IF(res, "failed locking buffer (handle = %p)",
1025                backBuffer->handle);
1026
1027        if (res != 0) {
1028            err = INVALID_OPERATION;
1029        } else {
1030            mLockedBuffer = backBuffer;
1031            outBuffer->width  = backBuffer->width;
1032            outBuffer->height = backBuffer->height;
1033            outBuffer->stride = backBuffer->stride;
1034            outBuffer->format = backBuffer->format;
1035            outBuffer->bits   = vaddr;
1036        }
1037    }
1038    return err;
1039}
1040
1041status_t Surface::unlockAndPost()
1042{
1043    if (mLockedBuffer == 0) {
1044        ALOGE("Surface::unlockAndPost failed, no locked buffer");
1045        return INVALID_OPERATION;
1046    }
1047
1048    int fd = -1;
1049    status_t err = mLockedBuffer->unlockAsync(&fd);
1050    ALOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
1051
1052    err = queueBuffer(mLockedBuffer.get(), fd);
1053    ALOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
1054            mLockedBuffer->handle, strerror(-err));
1055
1056    mPostedBuffer = mLockedBuffer;
1057    mLockedBuffer = 0;
1058    return err;
1059}
1060
1061}; // namespace android
1062