Layer.cpp revision c2e41222bf02a6579763974f82d65875cfa43481
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 ATRACE_TAG ATRACE_TAG_GRAPHICS 18 19#include <stdlib.h> 20#include <stdint.h> 21#include <sys/types.h> 22#include <math.h> 23 24#include <cutils/compiler.h> 25#include <cutils/native_handle.h> 26#include <cutils/properties.h> 27 28#include <utils/Errors.h> 29#include <utils/Log.h> 30#include <utils/StopWatch.h> 31#include <utils/Trace.h> 32 33#include <ui/GraphicBuffer.h> 34#include <ui/PixelFormat.h> 35 36#include <gui/Surface.h> 37 38#include "clz.h" 39#include "Colorizer.h" 40#include "DisplayDevice.h" 41#include "Layer.h" 42#include "SurfaceFlinger.h" 43#include "SurfaceTextureLayer.h" 44 45#include "DisplayHardware/HWComposer.h" 46 47#include "RenderEngine/RenderEngine.h" 48 49#define DEBUG_RESIZE 0 50 51namespace android { 52 53// --------------------------------------------------------------------------- 54 55int32_t Layer::sSequence = 1; 56 57Layer::Layer(SurfaceFlinger* flinger, const sp<Client>& client, 58 const String8& name, uint32_t w, uint32_t h, uint32_t flags) 59 : contentDirty(false), 60 sequence(uint32_t(android_atomic_inc(&sSequence))), 61 mFlinger(flinger), 62 mTextureName(-1U), 63 mPremultipliedAlpha(true), 64 mName("unnamed"), 65 mDebug(false), 66 mFormat(PIXEL_FORMAT_NONE), 67 mOpaqueLayer(true), 68 mTransactionFlags(0), 69 mQueuedFrames(0), 70 mCurrentTransform(0), 71 mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE), 72 mCurrentOpacity(true), 73 mRefreshPending(false), 74 mFrameLatencyNeeded(false), 75 mFiltering(false), 76 mNeedsFiltering(false), 77 mSecure(false), 78 mProtectedByApp(false), 79 mHasSurface(false), 80 mClientRef(client) 81{ 82 mCurrentCrop.makeInvalid(); 83 glGenTextures(1, &mTextureName); 84 85 uint32_t layerFlags = 0; 86 if (flags & ISurfaceComposerClient::eHidden) 87 layerFlags = layer_state_t::eLayerHidden; 88 89 if (flags & ISurfaceComposerClient::eNonPremultiplied) 90 mPremultipliedAlpha = false; 91 92 mName = name; 93 94 mCurrentState.active.w = w; 95 mCurrentState.active.h = h; 96 mCurrentState.active.crop.makeInvalid(); 97 mCurrentState.z = 0; 98 mCurrentState.alpha = 0xFF; 99 mCurrentState.layerStack = 0; 100 mCurrentState.flags = layerFlags; 101 mCurrentState.sequence = 0; 102 mCurrentState.transform.set(0, 0); 103 mCurrentState.requested = mCurrentState.active; 104 105 // drawing state & current state are identical 106 mDrawingState = mCurrentState; 107 108 nsecs_t displayPeriod = 109 flinger->getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 110 mFrameTracker.setDisplayRefreshPeriod(displayPeriod); 111} 112 113void Layer::onFirstRef() 114{ 115 // Creates a custom BufferQueue for SurfaceFlingerConsumer to use 116 mBufferQueue = new SurfaceTextureLayer(mFlinger); 117 mSurfaceFlingerConsumer = new SurfaceFlingerConsumer(mBufferQueue, mTextureName, 118 GL_TEXTURE_EXTERNAL_OES, false); 119 120 mSurfaceFlingerConsumer->setConsumerUsageBits(getEffectiveUsage(0)); 121 mSurfaceFlingerConsumer->setFrameAvailableListener(this); 122 mSurfaceFlingerConsumer->setName(mName); 123 124#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 125#warning "disabling triple buffering" 126 mSurfaceFlingerConsumer->setDefaultMaxBufferCount(2); 127#else 128 mSurfaceFlingerConsumer->setDefaultMaxBufferCount(3); 129#endif 130 131 const sp<const DisplayDevice> hw(mFlinger->getDefaultDisplayDevice()); 132 updateTransformHint(hw); 133} 134 135Layer::~Layer() { 136 sp<Client> c(mClientRef.promote()); 137 if (c != 0) { 138 c->detachLayer(this); 139 } 140 mFlinger->deleteTextureAsync(mTextureName); 141 mFrameTracker.logAndResetStats(mName); 142} 143 144// --------------------------------------------------------------------------- 145// callbacks 146// --------------------------------------------------------------------------- 147 148void Layer::onLayerDisplayed(const sp<const DisplayDevice>& hw, 149 HWComposer::HWCLayerInterface* layer) { 150 if (layer) { 151 layer->onDisplayed(); 152 mSurfaceFlingerConsumer->setReleaseFence(layer->getAndResetReleaseFence()); 153 } 154} 155 156void Layer::onFrameAvailable() { 157 android_atomic_inc(&mQueuedFrames); 158 mFlinger->signalLayerUpdate(); 159} 160 161// called with SurfaceFlinger::mStateLock from the drawing thread after 162// the layer has been remove from the current state list (and just before 163// it's removed from the drawing state list) 164void Layer::onRemoved() { 165 mSurfaceFlingerConsumer->abandon(); 166} 167 168// --------------------------------------------------------------------------- 169// set-up 170// --------------------------------------------------------------------------- 171 172const String8& Layer::getName() const { 173 return mName; 174} 175 176status_t Layer::setBuffers( uint32_t w, uint32_t h, 177 PixelFormat format, uint32_t flags) 178{ 179 uint32_t const maxSurfaceDims = min( 180 mFlinger->getMaxTextureSize(), mFlinger->getMaxViewportDims()); 181 182 // never allow a surface larger than what our underlying GL implementation 183 // can handle. 184 if ((uint32_t(w)>maxSurfaceDims) || (uint32_t(h)>maxSurfaceDims)) { 185 ALOGE("dimensions too large %u x %u", uint32_t(w), uint32_t(h)); 186 return BAD_VALUE; 187 } 188 189 mFormat = format; 190 191 mSecure = (flags & ISurfaceComposerClient::eSecure) ? true : false; 192 mProtectedByApp = (flags & ISurfaceComposerClient::eProtectedByApp) ? true : false; 193 mOpaqueLayer = (flags & ISurfaceComposerClient::eOpaque); 194 mCurrentOpacity = getOpacityForFormat(format); 195 196 mSurfaceFlingerConsumer->setDefaultBufferSize(w, h); 197 mSurfaceFlingerConsumer->setDefaultBufferFormat(format); 198 mSurfaceFlingerConsumer->setConsumerUsageBits(getEffectiveUsage(0)); 199 200 return NO_ERROR; 201} 202 203sp<IBinder> Layer::getHandle() { 204 Mutex::Autolock _l(mLock); 205 206 LOG_ALWAYS_FATAL_IF(mHasSurface, 207 "Layer::getHandle() has already been called"); 208 209 mHasSurface = true; 210 211 /* 212 * The layer handle is just a BBinder object passed to the client 213 * (remote process) -- we don't keep any reference on our side such that 214 * the dtor is called when the remote side let go of its reference. 215 * 216 * LayerCleaner ensures that mFlinger->onLayerDestroyed() is called for 217 * this layer when the handle is destroyed. 218 */ 219 220 class Handle : public BBinder, public LayerCleaner { 221 wp<const Layer> mOwner; 222 public: 223 Handle(const sp<SurfaceFlinger>& flinger, const sp<Layer>& layer) 224 : LayerCleaner(flinger, layer), mOwner(layer) { 225 } 226 }; 227 228 return new Handle(mFlinger, this); 229} 230 231sp<IGraphicBufferProducer> Layer::getBufferQueue() const { 232 return mBufferQueue; 233} 234 235// --------------------------------------------------------------------------- 236// h/w composer set-up 237// --------------------------------------------------------------------------- 238 239Rect Layer::getContentCrop() const { 240 // this is the crop rectangle that applies to the buffer 241 // itself (as opposed to the window) 242 Rect crop; 243 if (!mCurrentCrop.isEmpty()) { 244 // if the buffer crop is defined, we use that 245 crop = mCurrentCrop; 246 } else if (mActiveBuffer != NULL) { 247 // otherwise we use the whole buffer 248 crop = mActiveBuffer->getBounds(); 249 } else { 250 // if we don't have a buffer yet, we use an empty/invalid crop 251 crop.makeInvalid(); 252 } 253 return crop; 254} 255 256static Rect reduce(const Rect& win, const Region& exclude) { 257 if (CC_LIKELY(exclude.isEmpty())) { 258 return win; 259 } 260 if (exclude.isRect()) { 261 return win.reduce(exclude.getBounds()); 262 } 263 return Region(win).subtract(exclude).getBounds(); 264} 265 266Rect Layer::computeBounds() const { 267 const Layer::State& s(getDrawingState()); 268 Rect win(s.active.w, s.active.h); 269 if (!s.active.crop.isEmpty()) { 270 win.intersect(s.active.crop, &win); 271 } 272 // subtract the transparent region and snap to the bounds 273 return reduce(win, s.activeTransparentRegion); 274} 275 276FloatRect Layer::computeCrop(const sp<const DisplayDevice>& hw) const { 277 // the content crop is the area of the content that gets scaled to the 278 // layer's size. 279 FloatRect crop(getContentCrop()); 280 281 // the active.crop is the area of the window that gets cropped, but not 282 // scaled in any ways. 283 const State& s(getDrawingState()); 284 285 // apply the projection's clipping to the window crop in 286 // layerstack space, and convert-back to layer space. 287 // if there are no window scaling involved, this operation will map to full 288 // pixels in the buffer. 289 // FIXME: the 3 lines below can produce slightly incorrect clipping when we have 290 // a viewport clipping and a window transform. we should use floating point to fix this. 291 Rect activeCrop(s.transform.transform(s.active.crop)); 292 activeCrop.intersect(hw->getViewport(), &activeCrop); 293 activeCrop = s.transform.inverse().transform(activeCrop); 294 295 // paranoia: make sure the window-crop is constrained in the 296 // window's bounds 297 activeCrop.intersect(Rect(s.active.w, s.active.h), &activeCrop); 298 299 // subtract the transparent region and snap to the bounds 300 activeCrop = reduce(activeCrop, s.activeTransparentRegion); 301 302 if (!activeCrop.isEmpty()) { 303 // Transform the window crop to match the buffer coordinate system, 304 // which means using the inverse of the current transform set on the 305 // SurfaceFlingerConsumer. 306 uint32_t invTransform = mCurrentTransform; 307 int winWidth = s.active.w; 308 int winHeight = s.active.h; 309 if (invTransform & NATIVE_WINDOW_TRANSFORM_ROT_90) { 310 invTransform ^= NATIVE_WINDOW_TRANSFORM_FLIP_V | 311 NATIVE_WINDOW_TRANSFORM_FLIP_H; 312 winWidth = s.active.h; 313 winHeight = s.active.w; 314 } 315 const Rect winCrop = activeCrop.transform( 316 invTransform, s.active.w, s.active.h); 317 318 // below, crop is intersected with winCrop expressed in crop's coordinate space 319 float xScale = crop.getWidth() / float(winWidth); 320 float yScale = crop.getHeight() / float(winHeight); 321 322 float insetL = winCrop.left * xScale; 323 float insetT = winCrop.top * yScale; 324 float insetR = (winWidth - winCrop.right ) * xScale; 325 float insetB = (winHeight - winCrop.bottom) * yScale; 326 327 crop.left += insetL; 328 crop.top += insetT; 329 crop.right -= insetR; 330 crop.bottom -= insetB; 331 } 332 return crop; 333} 334 335void Layer::setGeometry( 336 const sp<const DisplayDevice>& hw, 337 HWComposer::HWCLayerInterface& layer) 338{ 339 layer.setDefaultState(); 340 341 // enable this layer 342 layer.setSkip(false); 343 344 if (isSecure() && !hw->isSecure()) { 345 layer.setSkip(true); 346 } 347 348 // this gives us only the "orientation" component of the transform 349 const State& s(getDrawingState()); 350 if (!isOpaque() || s.alpha != 0xFF) { 351 layer.setBlending(mPremultipliedAlpha ? 352 HWC_BLENDING_PREMULT : 353 HWC_BLENDING_COVERAGE); 354 } 355 356 // apply the layer's transform, followed by the display's global transform 357 // here we're guaranteed that the layer's transform preserves rects 358 Rect frame(s.transform.transform(computeBounds())); 359 frame.intersect(hw->getViewport(), &frame); 360 const Transform& tr(hw->getTransform()); 361 layer.setFrame(tr.transform(frame)); 362 layer.setCrop(computeCrop(hw)); 363 layer.setPlaneAlpha(s.alpha); 364 365 /* 366 * Transformations are applied in this order: 367 * 1) buffer orientation/flip/mirror 368 * 2) state transformation (window manager) 369 * 3) layer orientation (screen orientation) 370 * (NOTE: the matrices are multiplied in reverse order) 371 */ 372 373 const Transform bufferOrientation(mCurrentTransform); 374 const Transform transform(tr * s.transform * bufferOrientation); 375 376 // this gives us only the "orientation" component of the transform 377 const uint32_t orientation = transform.getOrientation(); 378 if (orientation & Transform::ROT_INVALID) { 379 // we can only handle simple transformation 380 layer.setSkip(true); 381 } else { 382 layer.setTransform(orientation); 383 } 384} 385 386void Layer::setPerFrameData(const sp<const DisplayDevice>& hw, 387 HWComposer::HWCLayerInterface& layer) { 388 // we have to set the visible region on every frame because 389 // we currently free it during onLayerDisplayed(), which is called 390 // after HWComposer::commit() -- every frame. 391 // Apply this display's projection's viewport to the visible region 392 // before giving it to the HWC HAL. 393 const Transform& tr = hw->getTransform(); 394 Region visible = tr.transform(visibleRegion.intersect(hw->getViewport())); 395 layer.setVisibleRegionScreen(visible); 396 397 // NOTE: buffer can be NULL if the client never drew into this 398 // layer yet, or if we ran out of memory 399 layer.setBuffer(mActiveBuffer); 400} 401 402void Layer::setAcquireFence(const sp<const DisplayDevice>& hw, 403 HWComposer::HWCLayerInterface& layer) { 404 int fenceFd = -1; 405 406 // TODO: there is a possible optimization here: we only need to set the 407 // acquire fence the first time a new buffer is acquired on EACH display. 408 409 if (layer.getCompositionType() == HWC_OVERLAY) { 410 sp<Fence> fence = mSurfaceFlingerConsumer->getCurrentFence(); 411 if (fence->isValid()) { 412 fenceFd = fence->dup(); 413 if (fenceFd == -1) { 414 ALOGW("failed to dup layer fence, skipping sync: %d", errno); 415 } 416 } 417 } 418 layer.setAcquireFenceFd(fenceFd); 419} 420 421// --------------------------------------------------------------------------- 422// drawing... 423// --------------------------------------------------------------------------- 424 425void Layer::draw(const sp<const DisplayDevice>& hw, const Region& clip) const { 426 onDraw(hw, clip); 427} 428 429void Layer::draw(const sp<const DisplayDevice>& hw) { 430 onDraw( hw, Region(hw->bounds()) ); 431} 432 433void Layer::onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const 434{ 435 ATRACE_CALL(); 436 437 if (CC_UNLIKELY(mActiveBuffer == 0)) { 438 // the texture has not been created yet, this Layer has 439 // in fact never been drawn into. This happens frequently with 440 // SurfaceView because the WindowManager can't know when the client 441 // has drawn the first time. 442 443 // If there is nothing under us, we paint the screen in black, otherwise 444 // we just skip this update. 445 446 // figure out if there is something below us 447 Region under; 448 const SurfaceFlinger::LayerVector& drawingLayers( 449 mFlinger->mDrawingState.layersSortedByZ); 450 const size_t count = drawingLayers.size(); 451 for (size_t i=0 ; i<count ; ++i) { 452 const sp<Layer>& layer(drawingLayers[i]); 453 if (layer.get() == static_cast<Layer const*>(this)) 454 break; 455 under.orSelf( hw->getTransform().transform(layer->visibleRegion) ); 456 } 457 // if not everything below us is covered, we plug the holes! 458 Region holes(clip.subtract(under)); 459 if (!holes.isEmpty()) { 460 clearWithOpenGL(hw, holes, 0, 0, 0, 1); 461 } 462 return; 463 } 464 465 // Bind the current buffer to the GL texture, and wait for it to be 466 // ready for us to draw into. 467 status_t err = mSurfaceFlingerConsumer->bindTextureImage(); 468 if (err != NO_ERROR) { 469 ALOGW("onDraw: bindTextureImage failed (err=%d)", err); 470 // Go ahead and draw the buffer anyway; no matter what we do the screen 471 // is probably going to have something visibly wrong. 472 } 473 474 bool blackOutLayer = isProtected() || (isSecure() && !hw->isSecure()); 475 476 RenderEngine& engine(mFlinger->getRenderEngine()); 477 478 if (!blackOutLayer) { 479 // TODO: we could be more subtle with isFixedSize() 480 const bool useFiltering = getFiltering() || needsFiltering(hw) || isFixedSize(); 481 482 // Query the texture matrix given our current filtering mode. 483 float textureMatrix[16]; 484 mSurfaceFlingerConsumer->setFilteringEnabled(useFiltering); 485 mSurfaceFlingerConsumer->getTransformMatrix(textureMatrix); 486 487 // Set things up for texturing. 488 engine.setupLayerTexturing(mTextureName, useFiltering, textureMatrix); 489 } else { 490 engine.setupLayerBlackedOut(); 491 } 492 drawWithOpenGL(hw, clip); 493 engine.disableTexturing(); 494} 495 496 497void Layer::clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip, 498 GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha) const 499{ 500 LayerMesh mesh; 501 computeGeometry(hw, &mesh); 502 503 mFlinger->getRenderEngine().clearWithColor( 504 mesh.getVertices(), mesh.getVertexCount(), 505 red, green, blue, alpha); 506} 507 508void Layer::clearWithOpenGL( 509 const sp<const DisplayDevice>& hw, const Region& clip) const { 510 clearWithOpenGL(hw, clip, 0,0,0,0); 511} 512 513void Layer::drawWithOpenGL( 514 const sp<const DisplayDevice>& hw, const Region& clip) const { 515 const uint32_t fbHeight = hw->getHeight(); 516 const State& s(getDrawingState()); 517 518 LayerMesh mesh; 519 computeGeometry(hw, &mesh); 520 521 /* 522 * NOTE: the way we compute the texture coordinates here produces 523 * different results than when we take the HWC path -- in the later case 524 * the "source crop" is rounded to texel boundaries. 525 * This can produce significantly different results when the texture 526 * is scaled by a large amount. 527 * 528 * The GL code below is more logical (imho), and the difference with 529 * HWC is due to a limitation of the HWC API to integers -- a question 530 * is suspend is wether we should ignore this problem or revert to 531 * GL composition when a buffer scaling is applied (maybe with some 532 * minimal value)? Or, we could make GL behave like HWC -- but this feel 533 * like more of a hack. 534 */ 535 const Rect win(computeBounds()); 536 537 GLfloat left = GLfloat(win.left) / GLfloat(s.active.w); 538 GLfloat top = GLfloat(win.top) / GLfloat(s.active.h); 539 GLfloat right = GLfloat(win.right) / GLfloat(s.active.w); 540 GLfloat bottom = GLfloat(win.bottom) / GLfloat(s.active.h); 541 542 // TODO: we probably want to generate the texture coords with the mesh 543 // here we assume that we only have 4 vertices 544 float texCoords[4][2]; 545 texCoords[0][0] = left; 546 texCoords[0][1] = top; 547 texCoords[1][0] = left; 548 texCoords[1][1] = bottom; 549 texCoords[2][0] = right; 550 texCoords[2][1] = bottom; 551 texCoords[3][0] = right; 552 texCoords[3][1] = top; 553 for (int i = 0; i < 4; i++) { 554 texCoords[i][1] = 1.0f - texCoords[i][1]; 555 } 556 557 RenderEngine& engine(mFlinger->getRenderEngine()); 558 engine.setupLayerBlending(mPremultipliedAlpha, isOpaque(), s.alpha); 559 engine.drawMesh2D(mesh.getVertices(), texCoords, mesh.getVertexCount()); 560 engine.disableBlending(); 561} 562 563void Layer::setFiltering(bool filtering) { 564 mFiltering = filtering; 565} 566 567bool Layer::getFiltering() const { 568 return mFiltering; 569} 570 571// As documented in libhardware header, formats in the range 572// 0x100 - 0x1FF are specific to the HAL implementation, and 573// are known to have no alpha channel 574// TODO: move definition for device-specific range into 575// hardware.h, instead of using hard-coded values here. 576#define HARDWARE_IS_DEVICE_FORMAT(f) ((f) >= 0x100 && (f) <= 0x1FF) 577 578bool Layer::getOpacityForFormat(uint32_t format) { 579 if (HARDWARE_IS_DEVICE_FORMAT(format)) { 580 return true; 581 } 582 switch (format) { 583 case HAL_PIXEL_FORMAT_RGBA_8888: 584 case HAL_PIXEL_FORMAT_BGRA_8888: 585 case HAL_PIXEL_FORMAT_sRGB_A_8888: 586 return false; 587 } 588 // in all other case, we have no blending (also for unknown formats) 589 return true; 590} 591 592// ---------------------------------------------------------------------------- 593// local state 594// ---------------------------------------------------------------------------- 595 596void Layer::computeGeometry(const sp<const DisplayDevice>& hw, LayerMesh* mesh) const 597{ 598 const Layer::State& s(getDrawingState()); 599 const Transform tr(hw->getTransform() * s.transform); 600 const uint32_t hw_h = hw->getHeight(); 601 Rect win(s.active.w, s.active.h); 602 if (!s.active.crop.isEmpty()) { 603 win.intersect(s.active.crop, &win); 604 } 605 // subtract the transparent region and snap to the bounds 606 win = reduce(win, s.activeTransparentRegion); 607 if (mesh) { 608 tr.transform(mesh->mVertices[0], win.left, win.top); 609 tr.transform(mesh->mVertices[1], win.left, win.bottom); 610 tr.transform(mesh->mVertices[2], win.right, win.bottom); 611 tr.transform(mesh->mVertices[3], win.right, win.top); 612 for (size_t i=0 ; i<4 ; i++) { 613 mesh->mVertices[i][1] = hw_h - mesh->mVertices[i][1]; 614 } 615 } 616} 617 618bool Layer::isOpaque() const 619{ 620 // if we don't have a buffer yet, we're translucent regardless of the 621 // layer's opaque flag. 622 if (mActiveBuffer == 0) { 623 return false; 624 } 625 626 // if the layer has the opaque flag, then we're always opaque, 627 // otherwise we use the current buffer's format. 628 return mOpaqueLayer || mCurrentOpacity; 629} 630 631bool Layer::isProtected() const 632{ 633 const sp<GraphicBuffer>& activeBuffer(mActiveBuffer); 634 return (activeBuffer != 0) && 635 (activeBuffer->getUsage() & GRALLOC_USAGE_PROTECTED); 636} 637 638bool Layer::isFixedSize() const { 639 return mCurrentScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE; 640} 641 642bool Layer::isCropped() const { 643 return !mCurrentCrop.isEmpty(); 644} 645 646bool Layer::needsFiltering(const sp<const DisplayDevice>& hw) const { 647 return mNeedsFiltering || hw->needsFiltering(); 648} 649 650void Layer::setVisibleRegion(const Region& visibleRegion) { 651 // always called from main thread 652 this->visibleRegion = visibleRegion; 653} 654 655void Layer::setCoveredRegion(const Region& coveredRegion) { 656 // always called from main thread 657 this->coveredRegion = coveredRegion; 658} 659 660void Layer::setVisibleNonTransparentRegion(const Region& 661 setVisibleNonTransparentRegion) { 662 // always called from main thread 663 this->visibleNonTransparentRegion = setVisibleNonTransparentRegion; 664} 665 666// ---------------------------------------------------------------------------- 667// transaction 668// ---------------------------------------------------------------------------- 669 670uint32_t Layer::doTransaction(uint32_t flags) { 671 ATRACE_CALL(); 672 673 const Layer::State& s(getDrawingState()); 674 const Layer::State& c(getCurrentState()); 675 676 const bool sizeChanged = (c.requested.w != s.requested.w) || 677 (c.requested.h != s.requested.h); 678 679 if (sizeChanged) { 680 // the size changed, we need to ask our client to request a new buffer 681 ALOGD_IF(DEBUG_RESIZE, 682 "doTransaction: geometry (layer=%p '%s'), tr=%02x, scalingMode=%d\n" 683 " current={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" 684 " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n" 685 " drawing={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" 686 " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n", 687 this, getName().string(), mCurrentTransform, mCurrentScalingMode, 688 c.active.w, c.active.h, 689 c.active.crop.left, 690 c.active.crop.top, 691 c.active.crop.right, 692 c.active.crop.bottom, 693 c.active.crop.getWidth(), 694 c.active.crop.getHeight(), 695 c.requested.w, c.requested.h, 696 c.requested.crop.left, 697 c.requested.crop.top, 698 c.requested.crop.right, 699 c.requested.crop.bottom, 700 c.requested.crop.getWidth(), 701 c.requested.crop.getHeight(), 702 s.active.w, s.active.h, 703 s.active.crop.left, 704 s.active.crop.top, 705 s.active.crop.right, 706 s.active.crop.bottom, 707 s.active.crop.getWidth(), 708 s.active.crop.getHeight(), 709 s.requested.w, s.requested.h, 710 s.requested.crop.left, 711 s.requested.crop.top, 712 s.requested.crop.right, 713 s.requested.crop.bottom, 714 s.requested.crop.getWidth(), 715 s.requested.crop.getHeight()); 716 717 // record the new size, form this point on, when the client request 718 // a buffer, it'll get the new size. 719 mSurfaceFlingerConsumer->setDefaultBufferSize( 720 c.requested.w, c.requested.h); 721 } 722 723 if (!isFixedSize()) { 724 725 const bool resizePending = (c.requested.w != c.active.w) || 726 (c.requested.h != c.active.h); 727 728 if (resizePending) { 729 // don't let Layer::doTransaction update the drawing state 730 // if we have a pending resize, unless we are in fixed-size mode. 731 // the drawing state will be updated only once we receive a buffer 732 // with the correct size. 733 // 734 // in particular, we want to make sure the clip (which is part 735 // of the geometry state) is latched together with the size but is 736 // latched immediately when no resizing is involved. 737 738 flags |= eDontUpdateGeometryState; 739 } 740 } 741 742 // always set active to requested, unless we're asked not to 743 // this is used by Layer, which special cases resizes. 744 if (flags & eDontUpdateGeometryState) { 745 } else { 746 Layer::State& editCurrentState(getCurrentState()); 747 editCurrentState.active = c.requested; 748 } 749 750 if (s.active != c.active) { 751 // invalidate and recompute the visible regions if needed 752 flags |= Layer::eVisibleRegion; 753 } 754 755 if (c.sequence != s.sequence) { 756 // invalidate and recompute the visible regions if needed 757 flags |= eVisibleRegion; 758 this->contentDirty = true; 759 760 // we may use linear filtering, if the matrix scales us 761 const uint8_t type = c.transform.getType(); 762 mNeedsFiltering = (!c.transform.preserveRects() || 763 (type >= Transform::SCALE)); 764 } 765 766 // Commit the transaction 767 commitTransaction(); 768 return flags; 769} 770 771void Layer::commitTransaction() { 772 mDrawingState = mCurrentState; 773} 774 775uint32_t Layer::getTransactionFlags(uint32_t flags) { 776 return android_atomic_and(~flags, &mTransactionFlags) & flags; 777} 778 779uint32_t Layer::setTransactionFlags(uint32_t flags) { 780 return android_atomic_or(flags, &mTransactionFlags); 781} 782 783bool Layer::setPosition(float x, float y) { 784 if (mCurrentState.transform.tx() == x && mCurrentState.transform.ty() == y) 785 return false; 786 mCurrentState.sequence++; 787 mCurrentState.transform.set(x, y); 788 setTransactionFlags(eTransactionNeeded); 789 return true; 790} 791bool Layer::setLayer(uint32_t z) { 792 if (mCurrentState.z == z) 793 return false; 794 mCurrentState.sequence++; 795 mCurrentState.z = z; 796 setTransactionFlags(eTransactionNeeded); 797 return true; 798} 799bool Layer::setSize(uint32_t w, uint32_t h) { 800 if (mCurrentState.requested.w == w && mCurrentState.requested.h == h) 801 return false; 802 mCurrentState.requested.w = w; 803 mCurrentState.requested.h = h; 804 setTransactionFlags(eTransactionNeeded); 805 return true; 806} 807bool Layer::setAlpha(uint8_t alpha) { 808 if (mCurrentState.alpha == alpha) 809 return false; 810 mCurrentState.sequence++; 811 mCurrentState.alpha = alpha; 812 setTransactionFlags(eTransactionNeeded); 813 return true; 814} 815bool Layer::setMatrix(const layer_state_t::matrix22_t& matrix) { 816 mCurrentState.sequence++; 817 mCurrentState.transform.set( 818 matrix.dsdx, matrix.dsdy, matrix.dtdx, matrix.dtdy); 819 setTransactionFlags(eTransactionNeeded); 820 return true; 821} 822bool Layer::setTransparentRegionHint(const Region& transparent) { 823 mCurrentState.requestedTransparentRegion = transparent; 824 setTransactionFlags(eTransactionNeeded); 825 return true; 826} 827bool Layer::setFlags(uint8_t flags, uint8_t mask) { 828 const uint32_t newFlags = (mCurrentState.flags & ~mask) | (flags & mask); 829 if (mCurrentState.flags == newFlags) 830 return false; 831 mCurrentState.sequence++; 832 mCurrentState.flags = newFlags; 833 setTransactionFlags(eTransactionNeeded); 834 return true; 835} 836bool Layer::setCrop(const Rect& crop) { 837 if (mCurrentState.requested.crop == crop) 838 return false; 839 mCurrentState.sequence++; 840 mCurrentState.requested.crop = crop; 841 setTransactionFlags(eTransactionNeeded); 842 return true; 843} 844 845bool Layer::setLayerStack(uint32_t layerStack) { 846 if (mCurrentState.layerStack == layerStack) 847 return false; 848 mCurrentState.sequence++; 849 mCurrentState.layerStack = layerStack; 850 setTransactionFlags(eTransactionNeeded); 851 return true; 852} 853 854// ---------------------------------------------------------------------------- 855// pageflip handling... 856// ---------------------------------------------------------------------------- 857 858bool Layer::onPreComposition() { 859 mRefreshPending = false; 860 return mQueuedFrames > 0; 861} 862 863void Layer::onPostComposition() { 864 if (mFrameLatencyNeeded) { 865 nsecs_t desiredPresentTime = mSurfaceFlingerConsumer->getTimestamp(); 866 mFrameTracker.setDesiredPresentTime(desiredPresentTime); 867 868 sp<Fence> frameReadyFence = mSurfaceFlingerConsumer->getCurrentFence(); 869 if (frameReadyFence->isValid()) { 870 mFrameTracker.setFrameReadyFence(frameReadyFence); 871 } else { 872 // There was no fence for this frame, so assume that it was ready 873 // to be presented at the desired present time. 874 mFrameTracker.setFrameReadyTime(desiredPresentTime); 875 } 876 877 const HWComposer& hwc = mFlinger->getHwComposer(); 878 sp<Fence> presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY); 879 if (presentFence->isValid()) { 880 mFrameTracker.setActualPresentFence(presentFence); 881 } else { 882 // The HWC doesn't support present fences, so use the refresh 883 // timestamp instead. 884 nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); 885 mFrameTracker.setActualPresentTime(presentTime); 886 } 887 888 mFrameTracker.advanceFrame(); 889 mFrameLatencyNeeded = false; 890 } 891} 892 893bool Layer::isVisible() const { 894 const Layer::State& s(mDrawingState); 895 return !(s.flags & layer_state_t::eLayerHidden) && s.alpha 896 && (mActiveBuffer != NULL); 897} 898 899Region Layer::latchBuffer(bool& recomputeVisibleRegions) 900{ 901 ATRACE_CALL(); 902 903 Region outDirtyRegion; 904 if (mQueuedFrames > 0) { 905 906 // if we've already called updateTexImage() without going through 907 // a composition step, we have to skip this layer at this point 908 // because we cannot call updateTeximage() without a corresponding 909 // compositionComplete() call. 910 // we'll trigger an update in onPreComposition(). 911 if (mRefreshPending) { 912 return outDirtyRegion; 913 } 914 915 // Capture the old state of the layer for comparisons later 916 const bool oldOpacity = isOpaque(); 917 sp<GraphicBuffer> oldActiveBuffer = mActiveBuffer; 918 919 struct Reject : public SurfaceFlingerConsumer::BufferRejecter { 920 Layer::State& front; 921 Layer::State& current; 922 bool& recomputeVisibleRegions; 923 Reject(Layer::State& front, Layer::State& current, 924 bool& recomputeVisibleRegions) 925 : front(front), current(current), 926 recomputeVisibleRegions(recomputeVisibleRegions) { 927 } 928 929 virtual bool reject(const sp<GraphicBuffer>& buf, 930 const IGraphicBufferConsumer::BufferItem& item) { 931 if (buf == NULL) { 932 return false; 933 } 934 935 uint32_t bufWidth = buf->getWidth(); 936 uint32_t bufHeight = buf->getHeight(); 937 938 // check that we received a buffer of the right size 939 // (Take the buffer's orientation into account) 940 if (item.mTransform & Transform::ROT_90) { 941 swap(bufWidth, bufHeight); 942 } 943 944 bool isFixedSize = item.mScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE; 945 if (front.active != front.requested) { 946 947 if (isFixedSize || 948 (bufWidth == front.requested.w && 949 bufHeight == front.requested.h)) 950 { 951 // Here we pretend the transaction happened by updating the 952 // current and drawing states. Drawing state is only accessed 953 // in this thread, no need to have it locked 954 front.active = front.requested; 955 956 // We also need to update the current state so that 957 // we don't end-up overwriting the drawing state with 958 // this stale current state during the next transaction 959 // 960 // NOTE: We don't need to hold the transaction lock here 961 // because State::active is only accessed from this thread. 962 current.active = front.active; 963 964 // recompute visible region 965 recomputeVisibleRegions = true; 966 } 967 968 ALOGD_IF(DEBUG_RESIZE, 969 "latchBuffer/reject: buffer (%ux%u, tr=%02x), scalingMode=%d\n" 970 " drawing={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" 971 " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n", 972 bufWidth, bufHeight, item.mTransform, item.mScalingMode, 973 front.active.w, front.active.h, 974 front.active.crop.left, 975 front.active.crop.top, 976 front.active.crop.right, 977 front.active.crop.bottom, 978 front.active.crop.getWidth(), 979 front.active.crop.getHeight(), 980 front.requested.w, front.requested.h, 981 front.requested.crop.left, 982 front.requested.crop.top, 983 front.requested.crop.right, 984 front.requested.crop.bottom, 985 front.requested.crop.getWidth(), 986 front.requested.crop.getHeight()); 987 } 988 989 if (!isFixedSize) { 990 if (front.active.w != bufWidth || 991 front.active.h != bufHeight) { 992 // reject this buffer 993 return true; 994 } 995 } 996 997 // if the transparent region has changed (this test is 998 // conservative, but that's fine, worst case we're doing 999 // a bit of extra work), we latch the new one and we 1000 // trigger a visible-region recompute. 1001 if (!front.activeTransparentRegion.isTriviallyEqual( 1002 front.requestedTransparentRegion)) { 1003 front.activeTransparentRegion = front.requestedTransparentRegion; 1004 1005 // We also need to update the current state so that 1006 // we don't end-up overwriting the drawing state with 1007 // this stale current state during the next transaction 1008 // 1009 // NOTE: We don't need to hold the transaction lock here 1010 // because State::active is only accessed from this thread. 1011 current.activeTransparentRegion = front.activeTransparentRegion; 1012 1013 // recompute visible region 1014 recomputeVisibleRegions = true; 1015 } 1016 1017 return false; 1018 } 1019 }; 1020 1021 1022 Reject r(mDrawingState, getCurrentState(), recomputeVisibleRegions); 1023 1024 status_t updateResult = mSurfaceFlingerConsumer->updateTexImage(&r); 1025 if (updateResult == BufferQueue::PRESENT_LATER) { 1026 // Producer doesn't want buffer to be displayed yet. Signal a 1027 // layer update so we check again at the next opportunity. 1028 mFlinger->signalLayerUpdate(); 1029 return outDirtyRegion; 1030 } 1031 1032 // Decrement the queued-frames count. Signal another event if we 1033 // have more frames pending. 1034 if (android_atomic_dec(&mQueuedFrames) > 1) { 1035 mFlinger->signalLayerUpdate(); 1036 } 1037 1038 if (updateResult != NO_ERROR) { 1039 // something happened! 1040 recomputeVisibleRegions = true; 1041 return outDirtyRegion; 1042 } 1043 1044 // update the active buffer 1045 mActiveBuffer = mSurfaceFlingerConsumer->getCurrentBuffer(); 1046 if (mActiveBuffer == NULL) { 1047 // this can only happen if the very first buffer was rejected. 1048 return outDirtyRegion; 1049 } 1050 1051 mRefreshPending = true; 1052 mFrameLatencyNeeded = true; 1053 if (oldActiveBuffer == NULL) { 1054 // the first time we receive a buffer, we need to trigger a 1055 // geometry invalidation. 1056 recomputeVisibleRegions = true; 1057 } 1058 1059 Rect crop(mSurfaceFlingerConsumer->getCurrentCrop()); 1060 const uint32_t transform(mSurfaceFlingerConsumer->getCurrentTransform()); 1061 const uint32_t scalingMode(mSurfaceFlingerConsumer->getCurrentScalingMode()); 1062 if ((crop != mCurrentCrop) || 1063 (transform != mCurrentTransform) || 1064 (scalingMode != mCurrentScalingMode)) 1065 { 1066 mCurrentCrop = crop; 1067 mCurrentTransform = transform; 1068 mCurrentScalingMode = scalingMode; 1069 recomputeVisibleRegions = true; 1070 } 1071 1072 if (oldActiveBuffer != NULL) { 1073 uint32_t bufWidth = mActiveBuffer->getWidth(); 1074 uint32_t bufHeight = mActiveBuffer->getHeight(); 1075 if (bufWidth != uint32_t(oldActiveBuffer->width) || 1076 bufHeight != uint32_t(oldActiveBuffer->height)) { 1077 recomputeVisibleRegions = true; 1078 } 1079 } 1080 1081 mCurrentOpacity = getOpacityForFormat(mActiveBuffer->format); 1082 if (oldOpacity != isOpaque()) { 1083 recomputeVisibleRegions = true; 1084 } 1085 1086 // FIXME: postedRegion should be dirty & bounds 1087 const Layer::State& s(getDrawingState()); 1088 Region dirtyRegion(Rect(s.active.w, s.active.h)); 1089 1090 // transform the dirty region to window-manager space 1091 outDirtyRegion = (s.transform.transform(dirtyRegion)); 1092 } 1093 return outDirtyRegion; 1094} 1095 1096uint32_t Layer::getEffectiveUsage(uint32_t usage) const 1097{ 1098 // TODO: should we do something special if mSecure is set? 1099 if (mProtectedByApp) { 1100 // need a hardware-protected path to external video sink 1101 usage |= GraphicBuffer::USAGE_PROTECTED; 1102 } 1103 usage |= GraphicBuffer::USAGE_HW_COMPOSER; 1104 return usage; 1105} 1106 1107void Layer::updateTransformHint(const sp<const DisplayDevice>& hw) const { 1108 uint32_t orientation = 0; 1109 if (!mFlinger->mDebugDisableTransformHint) { 1110 // The transform hint is used to improve performance, but we can 1111 // only have a single transform hint, it cannot 1112 // apply to all displays. 1113 const Transform& planeTransform(hw->getTransform()); 1114 orientation = planeTransform.getOrientation(); 1115 if (orientation & Transform::ROT_INVALID) { 1116 orientation = 0; 1117 } 1118 } 1119 mSurfaceFlingerConsumer->setTransformHint(orientation); 1120} 1121 1122// ---------------------------------------------------------------------------- 1123// debugging 1124// ---------------------------------------------------------------------------- 1125 1126void Layer::dump(String8& result, Colorizer& colorizer) const 1127{ 1128 const Layer::State& s(getDrawingState()); 1129 1130 colorizer.colorize(result, Colorizer::GREEN); 1131 result.appendFormat( 1132 "+ %s %p (%s)\n", 1133 getTypeId(), this, getName().string()); 1134 colorizer.reset(result); 1135 1136 s.activeTransparentRegion.dump(result, "transparentRegion"); 1137 visibleRegion.dump(result, "visibleRegion"); 1138 sp<Client> client(mClientRef.promote()); 1139 1140 result.appendFormat( " " 1141 "layerStack=%4d, z=%9d, pos=(%g,%g), size=(%4d,%4d), crop=(%4d,%4d,%4d,%4d), " 1142 "isOpaque=%1d, invalidate=%1d, " 1143 "alpha=0x%02x, flags=0x%08x, tr=[%.2f, %.2f][%.2f, %.2f]\n" 1144 " client=%p\n", 1145 s.layerStack, s.z, s.transform.tx(), s.transform.ty(), s.active.w, s.active.h, 1146 s.active.crop.left, s.active.crop.top, 1147 s.active.crop.right, s.active.crop.bottom, 1148 isOpaque(), contentDirty, 1149 s.alpha, s.flags, 1150 s.transform[0][0], s.transform[0][1], 1151 s.transform[1][0], s.transform[1][1], 1152 client.get()); 1153 1154 sp<const GraphicBuffer> buf0(mActiveBuffer); 1155 uint32_t w0=0, h0=0, s0=0, f0=0; 1156 if (buf0 != 0) { 1157 w0 = buf0->getWidth(); 1158 h0 = buf0->getHeight(); 1159 s0 = buf0->getStride(); 1160 f0 = buf0->format; 1161 } 1162 result.appendFormat( 1163 " " 1164 "format=%2d, activeBuffer=[%4ux%4u:%4u,%3X]," 1165 " queued-frames=%d, mRefreshPending=%d\n", 1166 mFormat, w0, h0, s0,f0, 1167 mQueuedFrames, mRefreshPending); 1168 1169 if (mSurfaceFlingerConsumer != 0) { 1170 mSurfaceFlingerConsumer->dump(result, " "); 1171 } 1172} 1173 1174void Layer::dumpStats(String8& result) const { 1175 mFrameTracker.dump(result); 1176} 1177 1178void Layer::clearStats() { 1179 mFrameTracker.clear(); 1180} 1181 1182void Layer::logFrameStats() { 1183 mFrameTracker.logAndResetStats(mName); 1184} 1185 1186// --------------------------------------------------------------------------- 1187 1188Layer::LayerCleaner::LayerCleaner(const sp<SurfaceFlinger>& flinger, 1189 const sp<Layer>& layer) 1190 : mFlinger(flinger), mLayer(layer) { 1191} 1192 1193Layer::LayerCleaner::~LayerCleaner() { 1194 // destroy client resources 1195 mFlinger->onLayerDestroyed(mLayer); 1196} 1197 1198// --------------------------------------------------------------------------- 1199 1200 1201}; // namespace android 1202