Layer.cpp revision 413f750501c4392e096c7bed27af0764cbadeb94
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 <stdint.h> 19#include <sys/types.h> 20 21#include <cutils/properties.h> 22#include <cutils/native_handle.h> 23 24#include <utils/Errors.h> 25#include <utils/Log.h> 26#include <utils/StopWatch.h> 27 28#include <ui/GraphicBuffer.h> 29#include <ui/PixelFormat.h> 30 31#include <surfaceflinger/Surface.h> 32 33#include "clz.h" 34#include "GLExtensions.h" 35#include "Layer.h" 36#include "SurfaceFlinger.h" 37#include "DisplayHardware/DisplayHardware.h" 38#include "DisplayHardware/HWComposer.h" 39 40 41#define DEBUG_RESIZE 0 42 43 44namespace android { 45 46template <typename T> inline T min(T a, T b) { 47 return a<b ? a : b; 48} 49 50// --------------------------------------------------------------------------- 51 52Layer::Layer(SurfaceFlinger* flinger, 53 DisplayID display, const sp<Client>& client) 54 : LayerBaseClient(flinger, display, client), 55 mGLExtensions(GLExtensions::getInstance()), 56 mNeedsBlending(true), 57 mNeedsDithering(false), 58 mSecure(false), 59 mTextureManager(), 60 mBufferManager(mTextureManager), 61 mWidth(0), mHeight(0), mFixedSize(false) 62{ 63} 64 65Layer::~Layer() 66{ 67 // FIXME: must be called from the main UI thread 68 EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay()); 69 mBufferManager.destroy(dpy); 70 71 // we can use getUserClientUnsafe here because we know we're 72 // single-threaded at that point. 73 sp<UserClient> ourClient(mUserClientRef.getUserClientUnsafe()); 74 if (ourClient != 0) { 75 ourClient->detachLayer(this); 76 } 77} 78 79status_t Layer::setToken(const sp<UserClient>& userClient, 80 SharedClient* sharedClient, int32_t token) 81{ 82 sp<SharedBufferServer> lcblk = new SharedBufferServer( 83 sharedClient, token, mBufferManager.getDefaultBufferCount(), 84 getIdentity()); 85 86 status_t err = mUserClientRef.setToken(userClient, lcblk, token); 87 88 LOGE_IF(err != NO_ERROR, 89 "ClientRef::setToken(%p, %p, %u) failed", 90 userClient.get(), lcblk.get(), token); 91 92 if (err == NO_ERROR) { 93 // we need to free the buffers associated with this surface 94 } 95 96 return err; 97} 98 99int32_t Layer::getToken() const 100{ 101 return mUserClientRef.getToken(); 102} 103 104sp<UserClient> Layer::getClient() const 105{ 106 return mUserClientRef.getClient(); 107} 108 109// called with SurfaceFlinger::mStateLock as soon as the layer is entered 110// in the purgatory list 111void Layer::onRemoved() 112{ 113 ClientRef::Access sharedClient(mUserClientRef); 114 SharedBufferServer* lcblk(sharedClient.get()); 115 if (lcblk) { 116 // wake up the condition 117 lcblk->setStatus(NO_INIT); 118 } 119} 120 121sp<LayerBaseClient::Surface> Layer::createSurface() const 122{ 123 return mSurface; 124} 125 126status_t Layer::ditch() 127{ 128 // NOTE: Called from the main UI thread 129 130 // the layer is not on screen anymore. free as much resources as possible 131 mFreezeLock.clear(); 132 133 EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay()); 134 mBufferManager.destroy(dpy); 135 mSurface.clear(); 136 137 Mutex::Autolock _l(mLock); 138 mWidth = mHeight = 0; 139 return NO_ERROR; 140} 141 142status_t Layer::setBuffers( uint32_t w, uint32_t h, 143 PixelFormat format, uint32_t flags) 144{ 145 // this surfaces pixel format 146 PixelFormatInfo info; 147 status_t err = getPixelFormatInfo(format, &info); 148 if (err) return err; 149 150 // the display's pixel format 151 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 152 uint32_t const maxSurfaceDims = min( 153 hw.getMaxTextureSize(), hw.getMaxViewportDims()); 154 155 // never allow a surface larger than what our underlying GL implementation 156 // can handle. 157 if ((uint32_t(w)>maxSurfaceDims) || (uint32_t(h)>maxSurfaceDims)) { 158 return BAD_VALUE; 159 } 160 161 PixelFormatInfo displayInfo; 162 getPixelFormatInfo(hw.getFormat(), &displayInfo); 163 const uint32_t hwFlags = hw.getFlags(); 164 165 mFormat = format; 166 mWidth = w; 167 mHeight = h; 168 169 mReqFormat = format; 170 mReqWidth = w; 171 mReqHeight = h; 172 173 mSecure = (flags & ISurfaceComposer::eSecure) ? true : false; 174 mNeedsBlending = (info.h_alpha - info.l_alpha) > 0; 175 176 // we use the red index 177 int displayRedSize = displayInfo.getSize(PixelFormatInfo::INDEX_RED); 178 int layerRedsize = info.getSize(PixelFormatInfo::INDEX_RED); 179 mNeedsDithering = layerRedsize > displayRedSize; 180 181 mSurface = new SurfaceLayer(mFlinger, this); 182 return NO_ERROR; 183} 184 185void Layer::setGeometry(hwc_layer_t* hwcl) 186{ 187 hwcl->compositionType = HWC_FRAMEBUFFER; 188 hwcl->hints = 0; 189 hwcl->flags = 0; 190 hwcl->transform = 0; 191 hwcl->blending = HWC_BLENDING_NONE; 192 193 // we can't do alpha-fade with the hwc HAL 194 const State& s(drawingState()); 195 if (s.alpha < 0xFF) { 196 hwcl->flags = HWC_SKIP_LAYER; 197 return; 198 } 199 200 // we can only handle simple transformation 201 if (mOrientation & Transform::ROT_INVALID) { 202 hwcl->flags = HWC_SKIP_LAYER; 203 return; 204 } 205 206 hwcl->transform = mOrientation; 207 208 if (needsBlending()) { 209 hwcl->blending = mPremultipliedAlpha ? 210 HWC_BLENDING_PREMULT : HWC_BLENDING_COVERAGE; 211 } 212 213 hwcl->displayFrame.left = mTransformedBounds.left; 214 hwcl->displayFrame.top = mTransformedBounds.top; 215 hwcl->displayFrame.right = mTransformedBounds.right; 216 hwcl->displayFrame.bottom = mTransformedBounds.bottom; 217 218 hwcl->visibleRegionScreen.rects = 219 reinterpret_cast<hwc_rect_t const *>( 220 visibleRegionScreen.getArray( 221 &hwcl->visibleRegionScreen.numRects)); 222} 223 224void Layer::setPerFrameData(hwc_layer_t* hwcl) { 225 sp<GraphicBuffer> buffer(mBufferManager.getActiveBuffer()); 226 if (buffer == NULL) { 227 // this situation can happen if we ran out of memory for instance. 228 // not much we can do. continue to use whatever texture was bound 229 // to this context. 230 hwcl->handle = NULL; 231 return; 232 } 233 hwcl->handle = const_cast<native_handle_t*>(buffer->handle); 234 // TODO: set the crop value properly 235 hwcl->sourceCrop.left = 0; 236 hwcl->sourceCrop.top = 0; 237 hwcl->sourceCrop.right = buffer->width; 238 hwcl->sourceCrop.bottom = buffer->height; 239} 240 241void Layer::reloadTexture(const Region& dirty) 242{ 243 sp<GraphicBuffer> buffer(mBufferManager.getActiveBuffer()); 244 if (buffer == NULL) { 245 // this situation can happen if we ran out of memory for instance. 246 // not much we can do. continue to use whatever texture was bound 247 // to this context. 248 return; 249 } 250 251 if (mGLExtensions.haveDirectTexture()) { 252 EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay()); 253 if (mBufferManager.initEglImage(dpy, buffer) != NO_ERROR) { 254 // not sure what we can do here... 255 goto slowpath; 256 } 257 } else { 258slowpath: 259 GGLSurface t; 260 if (buffer->usage & GRALLOC_USAGE_SW_READ_MASK) { 261 status_t res = buffer->lock(&t, GRALLOC_USAGE_SW_READ_OFTEN); 262 LOGE_IF(res, "error %d (%s) locking buffer %p", 263 res, strerror(res), buffer.get()); 264 if (res == NO_ERROR) { 265 mBufferManager.loadTexture(dirty, t); 266 buffer->unlock(); 267 } 268 } else { 269 // we can't do anything 270 } 271 } 272} 273 274void Layer::onDraw(const Region& clip) const 275{ 276 Texture tex(mBufferManager.getActiveTexture()); 277 if (tex.name == -1LU) { 278 // the texture has not been created yet, this Layer has 279 // in fact never been drawn into. This happens frequently with 280 // SurfaceView because the WindowManager can't know when the client 281 // has drawn the first time. 282 283 // If there is nothing under us, we paint the screen in black, otherwise 284 // we just skip this update. 285 286 // figure out if there is something below us 287 Region under; 288 const SurfaceFlinger::LayerVector& drawingLayers(mFlinger->mDrawingState.layersSortedByZ); 289 const size_t count = drawingLayers.size(); 290 for (size_t i=0 ; i<count ; ++i) { 291 const sp<LayerBase>& layer(drawingLayers[i]); 292 if (layer.get() == static_cast<LayerBase const*>(this)) 293 break; 294 under.orSelf(layer->visibleRegionScreen); 295 } 296 // if not everything below us is covered, we plug the holes! 297 Region holes(clip.subtract(under)); 298 if (!holes.isEmpty()) { 299 clearWithOpenGL(holes, 0, 0, 0, 1); 300 } 301 return; 302 } 303 drawWithOpenGL(clip, tex); 304} 305 306bool Layer::needsFiltering() const 307{ 308 if (!(mFlags & DisplayHardware::SLOW_CONFIG)) { 309 // NOTE: there is a race here, because mFixedSize is updated in a 310 // binder transaction. however, it doesn't really matter since it is 311 // evaluated each time we draw. To be perfectly correct, this flag 312 // would have to be associated with a buffer. 313 if (mFixedSize) 314 return true; 315 } 316 return LayerBase::needsFiltering(); 317} 318 319 320status_t Layer::setBufferCount(int bufferCount) 321{ 322 ClientRef::Access sharedClient(mUserClientRef); 323 SharedBufferServer* lcblk(sharedClient.get()); 324 if (!lcblk) { 325 // oops, the client is already gone 326 return DEAD_OBJECT; 327 } 328 329 // NOTE: lcblk->resize() is protected by an internal lock 330 status_t err = lcblk->resize(bufferCount); 331 if (err == NO_ERROR) 332 mBufferManager.resize(bufferCount); 333 334 return err; 335} 336 337sp<GraphicBuffer> Layer::requestBuffer(int index, 338 uint32_t reqWidth, uint32_t reqHeight, uint32_t reqFormat, 339 uint32_t usage) 340{ 341 sp<GraphicBuffer> buffer; 342 343 if (int32_t(reqWidth | reqHeight | reqFormat) < 0) 344 return buffer; 345 346 if ((!reqWidth && reqHeight) || (reqWidth && !reqHeight)) 347 return buffer; 348 349 // this ensures our client doesn't go away while we're accessing 350 // the shared area. 351 ClientRef::Access sharedClient(mUserClientRef); 352 SharedBufferServer* lcblk(sharedClient.get()); 353 if (!lcblk) { 354 // oops, the client is already gone 355 return buffer; 356 } 357 358 /* 359 * This is called from the client's Surface::dequeue(). This can happen 360 * at any time, especially while we're in the middle of using the 361 * buffer 'index' as our front buffer. 362 */ 363 364 status_t err = NO_ERROR; 365 uint32_t w, h, f; 366 { // scope for the lock 367 Mutex::Autolock _l(mLock); 368 369 // zero means default 370 if (!reqFormat) reqFormat = mFormat; 371 if (!reqWidth) reqWidth = mWidth; 372 if (!reqHeight) reqHeight = mHeight; 373 374 w = reqWidth; 375 h = reqHeight; 376 f = reqFormat; 377 378 if ((reqWidth != mReqWidth) || (reqHeight != mReqHeight) || 379 (reqFormat != mReqFormat)) { 380 mReqWidth = reqWidth; 381 mReqHeight = reqHeight; 382 mReqFormat = reqFormat; 383 384 lcblk->reallocateAllExcept(index); 385 } 386 } 387 388 // here we have to reallocate a new buffer because the buffer could be 389 // used as the front buffer, or by a client in our process 390 // (eg: status bar), and we can't release the handle under its feet. 391 const uint32_t effectiveUsage = getEffectiveUsage(usage); 392 buffer = new GraphicBuffer(w, h, f, effectiveUsage); 393 err = buffer->initCheck(); 394 395 if (err || buffer->handle == 0) { 396 LOGE_IF(err || buffer->handle == 0, 397 "Layer::requestBuffer(this=%p), index=%d, w=%d, h=%d failed (%s)", 398 this, index, w, h, strerror(-err)); 399 } else { 400 LOGD_IF(DEBUG_RESIZE, 401 "Layer::requestBuffer(this=%p), index=%d, w=%d, h=%d, handle=%p", 402 this, index, w, h, buffer->handle); 403 } 404 405 if (err == NO_ERROR && buffer->handle != 0) { 406 Mutex::Autolock _l(mLock); 407 mBufferManager.attachBuffer(index, buffer); 408 } 409 return buffer; 410} 411 412uint32_t Layer::getEffectiveUsage(uint32_t usage) const 413{ 414 /* 415 * buffers used for software rendering, but h/w composition 416 * are allocated with SW_READ_OFTEN | SW_WRITE_OFTEN | HW_TEXTURE 417 * 418 * buffers used for h/w rendering and h/w composition 419 * are allocated with HW_RENDER | HW_TEXTURE 420 * 421 * buffers used with h/w rendering and either NPOT or no egl_image_ext 422 * are allocated with SW_READ_RARELY | HW_RENDER 423 * 424 */ 425 426 if (mSecure) { 427 // secure buffer, don't store it into the GPU 428 usage = GraphicBuffer::USAGE_SW_READ_OFTEN | 429 GraphicBuffer::USAGE_SW_WRITE_OFTEN; 430 } else { 431 // it's allowed to modify the usage flags here, but generally 432 // the requested flags should be honored. 433 // request EGLImage for all buffers 434 usage |= GraphicBuffer::USAGE_HW_TEXTURE; 435 } 436 return usage; 437} 438 439uint32_t Layer::doTransaction(uint32_t flags) 440{ 441 const Layer::State& front(drawingState()); 442 const Layer::State& temp(currentState()); 443 444 const bool sizeChanged = (front.requested_w != temp.requested_w) || 445 (front.requested_h != temp.requested_h); 446 447 if (sizeChanged) { 448 // the size changed, we need to ask our client to request a new buffer 449 LOGD_IF(DEBUG_RESIZE, 450 "resize (layer=%p), requested (%dx%d), drawing (%d,%d)", 451 this, 452 int(temp.requested_w), int(temp.requested_h), 453 int(front.requested_w), int(front.requested_h)); 454 455 if (!isFixedSize()) { 456 // we're being resized and there is a freeze display request, 457 // acquire a freeze lock, so that the screen stays put 458 // until we've redrawn at the new size; this is to avoid 459 // glitches upon orientation changes. 460 if (mFlinger->hasFreezeRequest()) { 461 // if the surface is hidden, don't try to acquire the 462 // freeze lock, since hidden surfaces may never redraw 463 if (!(front.flags & ISurfaceComposer::eLayerHidden)) { 464 mFreezeLock = mFlinger->getFreezeLock(); 465 } 466 } 467 468 // this will make sure LayerBase::doTransaction doesn't update 469 // the drawing state's size 470 Layer::State& editDraw(mDrawingState); 471 editDraw.requested_w = temp.requested_w; 472 editDraw.requested_h = temp.requested_h; 473 474 // record the new size, form this point on, when the client request 475 // a buffer, it'll get the new size. 476 setBufferSize(temp.requested_w, temp.requested_h); 477 478 ClientRef::Access sharedClient(mUserClientRef); 479 SharedBufferServer* lcblk(sharedClient.get()); 480 if (lcblk) { 481 // all buffers need reallocation 482 lcblk->reallocateAll(); 483 } 484 } else { 485 // record the new size 486 setBufferSize(temp.requested_w, temp.requested_h); 487 } 488 } 489 490 if (temp.sequence != front.sequence) { 491 if (temp.flags & ISurfaceComposer::eLayerHidden || temp.alpha == 0) { 492 // this surface is now hidden, so it shouldn't hold a freeze lock 493 // (it may never redraw, which is fine if it is hidden) 494 mFreezeLock.clear(); 495 } 496 } 497 498 return LayerBase::doTransaction(flags); 499} 500 501void Layer::setBufferSize(uint32_t w, uint32_t h) { 502 Mutex::Autolock _l(mLock); 503 mWidth = w; 504 mHeight = h; 505} 506 507bool Layer::isFixedSize() const { 508 Mutex::Autolock _l(mLock); 509 return mFixedSize; 510} 511 512// ---------------------------------------------------------------------------- 513// pageflip handling... 514// ---------------------------------------------------------------------------- 515 516void Layer::lockPageFlip(bool& recomputeVisibleRegions) 517{ 518 ClientRef::Access sharedClient(mUserClientRef); 519 SharedBufferServer* lcblk(sharedClient.get()); 520 if (!lcblk) { 521 // client died 522 recomputeVisibleRegions = true; 523 return; 524 } 525 526 ssize_t buf = lcblk->retireAndLock(); 527 if (buf == NOT_ENOUGH_DATA) { 528 // NOTE: This is not an error, it simply means there is nothing to 529 // retire. The buffer is locked because we will use it 530 // for composition later in the loop 531 return; 532 } 533 534 if (buf < NO_ERROR) { 535 LOGE("retireAndLock() buffer index (%d) out of range", int(buf)); 536 mPostedDirtyRegion.clear(); 537 return; 538 } 539 540 // we retired a buffer, which becomes the new front buffer 541 if (mBufferManager.setActiveBufferIndex(buf) < NO_ERROR) { 542 LOGE("retireAndLock() buffer index (%d) out of range", int(buf)); 543 mPostedDirtyRegion.clear(); 544 return; 545 } 546 547 sp<GraphicBuffer> newFrontBuffer(getBuffer(buf)); 548 if (newFrontBuffer != NULL) { 549 // get the dirty region 550 // compute the posted region 551 const Region dirty(lcblk->getDirtyRegion(buf)); 552 mPostedDirtyRegion = dirty.intersect( newFrontBuffer->getBounds() ); 553 554 // update the layer size and release freeze-lock 555 const Layer::State& front(drawingState()); 556 if (newFrontBuffer->getWidth() == front.requested_w && 557 newFrontBuffer->getHeight() == front.requested_h) 558 { 559 if ((front.w != front.requested_w) || 560 (front.h != front.requested_h)) 561 { 562 // Here we pretend the transaction happened by updating the 563 // current and drawing states. Drawing state is only accessed 564 // in this thread, no need to have it locked 565 Layer::State& editDraw(mDrawingState); 566 editDraw.w = editDraw.requested_w; 567 editDraw.h = editDraw.requested_h; 568 569 // We also need to update the current state so that we don't 570 // end-up doing too much work during the next transaction. 571 // NOTE: We actually don't need hold the transaction lock here 572 // because State::w and State::h are only accessed from 573 // this thread 574 Layer::State& editTemp(currentState()); 575 editTemp.w = editDraw.w; 576 editTemp.h = editDraw.h; 577 578 // recompute visible region 579 recomputeVisibleRegions = true; 580 } 581 582 // we now have the correct size, unfreeze the screen 583 mFreezeLock.clear(); 584 } 585 586 // get the crop region 587 setBufferCrop( lcblk->getCrop(buf) ); 588 589 // get the transformation 590 setBufferTransform( lcblk->getTransform(buf) ); 591 592 } else { 593 // this should not happen unless we ran out of memory while 594 // allocating the buffer. we're hoping that things will get back 595 // to normal the next time the app tries to draw into this buffer. 596 // meanwhile, pretend the screen didn't update. 597 mPostedDirtyRegion.clear(); 598 } 599 600 if (lcblk->getQueuedCount()) { 601 // signal an event if we have more buffers waiting 602 mFlinger->signalEvent(); 603 } 604 605 /* a buffer was posted, so we need to call reloadTexture(), which 606 * will update our internal data structures (eg: EGLImageKHR or 607 * texture names). we need to do this even if mPostedDirtyRegion is 608 * empty -- it's orthogonal to the fact that a new buffer was posted, 609 * for instance, a degenerate case could be that the user did an empty 610 * update but repainted the buffer with appropriate content (after a 611 * resize for instance). 612 */ 613 reloadTexture( mPostedDirtyRegion ); 614} 615 616void Layer::unlockPageFlip( 617 const Transform& planeTransform, Region& outDirtyRegion) 618{ 619 Region dirtyRegion(mPostedDirtyRegion); 620 if (!dirtyRegion.isEmpty()) { 621 mPostedDirtyRegion.clear(); 622 // The dirty region is given in the layer's coordinate space 623 // transform the dirty region by the surface's transformation 624 // and the global transformation. 625 const Layer::State& s(drawingState()); 626 const Transform tr(planeTransform * s.transform); 627 dirtyRegion = tr.transform(dirtyRegion); 628 629 // At this point, the dirty region is in screen space. 630 // Make sure it's constrained by the visible region (which 631 // is in screen space as well). 632 dirtyRegion.andSelf(visibleRegionScreen); 633 outDirtyRegion.orSelf(dirtyRegion); 634 } 635 if (visibleRegionScreen.isEmpty()) { 636 // an invisible layer should not hold a freeze-lock 637 // (because it may never be updated and therefore never release it) 638 mFreezeLock.clear(); 639 } 640} 641 642void Layer::finishPageFlip() 643{ 644 ClientRef::Access sharedClient(mUserClientRef); 645 SharedBufferServer* lcblk(sharedClient.get()); 646 if (lcblk) { 647 int buf = mBufferManager.getActiveBufferIndex(); 648 if (buf >= 0) { 649 status_t err = lcblk->unlock( buf ); 650 LOGE_IF(err!=NO_ERROR, 651 "layer %p, buffer=%d wasn't locked!", 652 this, buf); 653 } 654 } 655} 656 657 658void Layer::dump(String8& result, char* buffer, size_t SIZE) const 659{ 660 LayerBaseClient::dump(result, buffer, SIZE); 661 662 ClientRef::Access sharedClient(mUserClientRef); 663 SharedBufferServer* lcblk(sharedClient.get()); 664 uint32_t totalTime = 0; 665 if (lcblk) { 666 SharedBufferStack::Statistics stats = lcblk->getStats(); 667 totalTime= stats.totalTime; 668 result.append( lcblk->dump(" ") ); 669 } 670 671 sp<const GraphicBuffer> buf0(getBuffer(0)); 672 sp<const GraphicBuffer> buf1(getBuffer(1)); 673 uint32_t w0=0, h0=0, s0=0; 674 uint32_t w1=0, h1=0, s1=0; 675 if (buf0 != 0) { 676 w0 = buf0->getWidth(); 677 h0 = buf0->getHeight(); 678 s0 = buf0->getStride(); 679 } 680 if (buf1 != 0) { 681 w1 = buf1->getWidth(); 682 h1 = buf1->getHeight(); 683 s1 = buf1->getStride(); 684 } 685 snprintf(buffer, SIZE, 686 " " 687 "format=%2d, [%3ux%3u:%3u] [%3ux%3u:%3u]," 688 " freezeLock=%p, dq-q-time=%u us\n", 689 mFormat, w0, h0, s0, w1, h1, s1, 690 getFreezeLock().get(), totalTime); 691 692 result.append(buffer); 693} 694 695// --------------------------------------------------------------------------- 696 697Layer::ClientRef::ClientRef() 698 : mControlBlock(0), mToken(-1) { 699} 700 701Layer::ClientRef::~ClientRef() { 702} 703 704int32_t Layer::ClientRef::getToken() const { 705 Mutex::Autolock _l(mLock); 706 return mToken; 707} 708 709sp<UserClient> Layer::ClientRef::getClient() const { 710 Mutex::Autolock _l(mLock); 711 return mUserClient.promote(); 712} 713 714status_t Layer::ClientRef::setToken(const sp<UserClient>& uc, 715 const sp<SharedBufferServer>& sharedClient, int32_t token) { 716 Mutex::Autolock _l(mLock); 717 718 { // scope for strong mUserClient reference 719 sp<UserClient> userClient(mUserClient.promote()); 720 if (mUserClient != 0 && mControlBlock != 0) { 721 mControlBlock->setStatus(NO_INIT); 722 } 723 } 724 725 mUserClient = uc; 726 mToken = token; 727 mControlBlock = sharedClient; 728 return NO_ERROR; 729} 730 731sp<UserClient> Layer::ClientRef::getUserClientUnsafe() const { 732 return mUserClient.promote(); 733} 734 735// this class gives us access to SharedBufferServer safely 736// it makes sure the UserClient (and its associated shared memory) 737// won't go away while we're accessing it. 738Layer::ClientRef::Access::Access(const ClientRef& ref) 739 : mControlBlock(0) 740{ 741 Mutex::Autolock _l(ref.mLock); 742 mUserClientStrongRef = ref.mUserClient.promote(); 743 if (mUserClientStrongRef != 0) 744 mControlBlock = ref.mControlBlock; 745} 746 747Layer::ClientRef::Access::~Access() 748{ 749} 750 751// --------------------------------------------------------------------------- 752 753Layer::BufferManager::BufferManager(TextureManager& tm) 754 : mNumBuffers(NUM_BUFFERS), mTextureManager(tm), 755 mActiveBuffer(-1), mFailover(false) 756{ 757} 758 759Layer::BufferManager::~BufferManager() 760{ 761} 762 763status_t Layer::BufferManager::resize(size_t size) 764{ 765 Mutex::Autolock _l(mLock); 766 mNumBuffers = size; 767 return NO_ERROR; 768} 769 770// only for debugging 771sp<GraphicBuffer> Layer::BufferManager::getBuffer(size_t index) const { 772 return mBufferData[index].buffer; 773} 774 775status_t Layer::BufferManager::setActiveBufferIndex(size_t index) { 776 mActiveBuffer = index; 777 return NO_ERROR; 778} 779 780size_t Layer::BufferManager::getActiveBufferIndex() const { 781 return mActiveBuffer; 782} 783 784Texture Layer::BufferManager::getActiveTexture() const { 785 Texture res; 786 if (mFailover || mActiveBuffer<0) { 787 res = mFailoverTexture; 788 } else { 789 static_cast<Image&>(res) = mBufferData[mActiveBuffer].texture; 790 } 791 return res; 792} 793 794sp<GraphicBuffer> Layer::BufferManager::getActiveBuffer() const { 795 sp<GraphicBuffer> result; 796 const ssize_t activeBuffer = mActiveBuffer; 797 if (activeBuffer >= 0) { 798 BufferData const * const buffers = mBufferData; 799 Mutex::Autolock _l(mLock); 800 result = buffers[activeBuffer].buffer; 801 } 802 return result; 803} 804 805sp<GraphicBuffer> Layer::BufferManager::detachBuffer(size_t index) 806{ 807 BufferData* const buffers = mBufferData; 808 sp<GraphicBuffer> buffer; 809 Mutex::Autolock _l(mLock); 810 buffer = buffers[index].buffer; 811 buffers[index].buffer = 0; 812 return buffer; 813} 814 815status_t Layer::BufferManager::attachBuffer(size_t index, 816 const sp<GraphicBuffer>& buffer) 817{ 818 BufferData* const buffers = mBufferData; 819 Mutex::Autolock _l(mLock); 820 buffers[index].buffer = buffer; 821 buffers[index].texture.dirty = true; 822 return NO_ERROR; 823} 824 825status_t Layer::BufferManager::destroy(EGLDisplay dpy) 826{ 827 BufferData* const buffers = mBufferData; 828 size_t num; 829 { // scope for the lock 830 Mutex::Autolock _l(mLock); 831 num = mNumBuffers; 832 for (size_t i=0 ; i<num ; i++) { 833 buffers[i].buffer = 0; 834 } 835 } 836 for (size_t i=0 ; i<num ; i++) { 837 destroyTexture(&buffers[i].texture, dpy); 838 } 839 destroyTexture(&mFailoverTexture, dpy); 840 return NO_ERROR; 841} 842 843status_t Layer::BufferManager::initEglImage(EGLDisplay dpy, 844 const sp<GraphicBuffer>& buffer) 845{ 846 status_t err = NO_INIT; 847 ssize_t index = mActiveBuffer; 848 if (index >= 0) { 849 if (!mFailover) { 850 Image& texture(mBufferData[index].texture); 851 err = mTextureManager.initEglImage(&texture, dpy, buffer); 852 // if EGLImage fails, we switch to regular texture mode, and we 853 // free all resources associated with using EGLImages. 854 if (err == NO_ERROR) { 855 mFailover = false; 856 destroyTexture(&mFailoverTexture, dpy); 857 } else { 858 mFailover = true; 859 const size_t num = mNumBuffers; 860 for (size_t i=0 ; i<num ; i++) { 861 destroyTexture(&mBufferData[i].texture, dpy); 862 } 863 } 864 } else { 865 // we failed once, don't try again 866 err = BAD_VALUE; 867 } 868 } 869 return err; 870} 871 872status_t Layer::BufferManager::loadTexture( 873 const Region& dirty, const GGLSurface& t) 874{ 875 return mTextureManager.loadTexture(&mFailoverTexture, dirty, t); 876} 877 878status_t Layer::BufferManager::destroyTexture(Image* tex, EGLDisplay dpy) 879{ 880 if (tex->name != -1U) { 881 glDeleteTextures(1, &tex->name); 882 tex->name = -1U; 883 } 884 if (tex->image != EGL_NO_IMAGE_KHR) { 885 eglDestroyImageKHR(dpy, tex->image); 886 tex->image = EGL_NO_IMAGE_KHR; 887 } 888 return NO_ERROR; 889} 890 891// --------------------------------------------------------------------------- 892 893Layer::SurfaceLayer::SurfaceLayer(const sp<SurfaceFlinger>& flinger, 894 const sp<Layer>& owner) 895 : Surface(flinger, owner->getIdentity(), owner) 896{ 897} 898 899Layer::SurfaceLayer::~SurfaceLayer() 900{ 901} 902 903sp<GraphicBuffer> Layer::SurfaceLayer::requestBuffer(int index, 904 uint32_t w, uint32_t h, uint32_t format, uint32_t usage) 905{ 906 sp<GraphicBuffer> buffer; 907 sp<Layer> owner(getOwner()); 908 if (owner != 0) { 909 /* 910 * requestBuffer() cannot be called from the main thread 911 * as it could cause a dead-lock, since it may have to wait 912 * on conditions updated my the main thread. 913 */ 914 buffer = owner->requestBuffer(index, w, h, format, usage); 915 } 916 return buffer; 917} 918 919status_t Layer::SurfaceLayer::setBufferCount(int bufferCount) 920{ 921 status_t err = DEAD_OBJECT; 922 sp<Layer> owner(getOwner()); 923 if (owner != 0) { 924 /* 925 * setBufferCount() cannot be called from the main thread 926 * as it could cause a dead-lock, since it may have to wait 927 * on conditions updated my the main thread. 928 */ 929 err = owner->setBufferCount(bufferCount); 930 } 931 return err; 932} 933 934// --------------------------------------------------------------------------- 935 936 937}; // namespace android 938