Layer.cpp revision 0e8f1443b87f9009159cef6394de48894f98f826
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 mMesh(Mesh::TRIANGLE_FAN, 4, 2, 2), 78 mSecure(false), 79 mProtectedByApp(false), 80 mHasSurface(false), 81 mClientRef(client) 82{ 83 mCurrentCrop.makeInvalid(); 84 mFlinger->getRenderEngine().genTextures(1, &mTextureName); 85 mTexture.init(Texture::TEXTURE_EXTERNAL, mTextureName); 86 87 uint32_t layerFlags = 0; 88 if (flags & ISurfaceComposerClient::eHidden) 89 layerFlags = layer_state_t::eLayerHidden; 90 91 if (flags & ISurfaceComposerClient::eNonPremultiplied) 92 mPremultipliedAlpha = false; 93 94 mName = name; 95 96 mCurrentState.active.w = w; 97 mCurrentState.active.h = h; 98 mCurrentState.active.crop.makeInvalid(); 99 mCurrentState.z = 0; 100 mCurrentState.alpha = 0xFF; 101 mCurrentState.layerStack = 0; 102 mCurrentState.flags = layerFlags; 103 mCurrentState.sequence = 0; 104 mCurrentState.transform.set(0, 0); 105 mCurrentState.requested = mCurrentState.active; 106 107 // drawing state & current state are identical 108 mDrawingState = mCurrentState; 109 110 nsecs_t displayPeriod = 111 flinger->getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 112 mFrameTracker.setDisplayRefreshPeriod(displayPeriod); 113} 114 115void Layer::onFirstRef() { 116 // Creates a custom BufferQueue for SurfaceFlingerConsumer to use 117 mBufferQueue = new SurfaceTextureLayer(mFlinger); 118 mSurfaceFlingerConsumer = new SurfaceFlingerConsumer(mBufferQueue, mTextureName); 119 mSurfaceFlingerConsumer->setConsumerUsageBits(getEffectiveUsage(0)); 120 mSurfaceFlingerConsumer->setFrameAvailableListener(this); 121 mSurfaceFlingerConsumer->setName(mName); 122 123#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 124#warning "disabling triple buffering" 125 mSurfaceFlingerConsumer->setDefaultMaxBufferCount(2); 126#else 127 mSurfaceFlingerConsumer->setDefaultMaxBufferCount(3); 128#endif 129 130 const sp<const DisplayDevice> hw(mFlinger->getDefaultDisplayDevice()); 131 updateTransformHint(hw); 132} 133 134Layer::~Layer() { 135 sp<Client> c(mClientRef.promote()); 136 if (c != 0) { 137 c->detachLayer(this); 138 } 139 mFlinger->deleteTextureAsync(mTextureName); 140 mFrameTracker.logAndResetStats(mName); 141} 142 143// --------------------------------------------------------------------------- 144// callbacks 145// --------------------------------------------------------------------------- 146 147void Layer::onLayerDisplayed(const sp<const DisplayDevice>& hw, 148 HWComposer::HWCLayerInterface* layer) { 149 if (layer) { 150 layer->onDisplayed(); 151 mSurfaceFlingerConsumer->setReleaseFence(layer->getAndResetReleaseFence()); 152 } 153} 154 155void Layer::onFrameAvailable() { 156 android_atomic_inc(&mQueuedFrames); 157 mFlinger->signalLayerUpdate(); 158} 159 160// called with SurfaceFlinger::mStateLock from the drawing thread after 161// the layer has been remove from the current state list (and just before 162// it's removed from the drawing state list) 163void Layer::onRemoved() { 164 mSurfaceFlingerConsumer->abandon(); 165} 166 167// --------------------------------------------------------------------------- 168// set-up 169// --------------------------------------------------------------------------- 170 171const String8& Layer::getName() const { 172 return mName; 173} 174 175status_t Layer::setBuffers( uint32_t w, uint32_t h, 176 PixelFormat format, uint32_t flags) 177{ 178 uint32_t const maxSurfaceDims = min( 179 mFlinger->getMaxTextureSize(), mFlinger->getMaxViewportDims()); 180 181 // never allow a surface larger than what our underlying GL implementation 182 // can handle. 183 if ((uint32_t(w)>maxSurfaceDims) || (uint32_t(h)>maxSurfaceDims)) { 184 ALOGE("dimensions too large %u x %u", uint32_t(w), uint32_t(h)); 185 return BAD_VALUE; 186 } 187 188 mFormat = format; 189 190 mSecure = (flags & ISurfaceComposerClient::eSecure) ? true : false; 191 mProtectedByApp = (flags & ISurfaceComposerClient::eProtectedByApp) ? true : false; 192 mOpaqueLayer = (flags & ISurfaceComposerClient::eOpaque); 193 mCurrentOpacity = getOpacityForFormat(format); 194 195 mSurfaceFlingerConsumer->setDefaultBufferSize(w, h); 196 mSurfaceFlingerConsumer->setDefaultBufferFormat(format); 197 mSurfaceFlingerConsumer->setConsumerUsageBits(getEffectiveUsage(0)); 198 199 return NO_ERROR; 200} 201 202sp<IBinder> Layer::getHandle() { 203 Mutex::Autolock _l(mLock); 204 205 LOG_ALWAYS_FATAL_IF(mHasSurface, 206 "Layer::getHandle() has already been called"); 207 208 mHasSurface = true; 209 210 /* 211 * The layer handle is just a BBinder object passed to the client 212 * (remote process) -- we don't keep any reference on our side such that 213 * the dtor is called when the remote side let go of its reference. 214 * 215 * LayerCleaner ensures that mFlinger->onLayerDestroyed() is called for 216 * this layer when the handle is destroyed. 217 */ 218 219 class Handle : public BBinder, public LayerCleaner { 220 wp<const Layer> mOwner; 221 public: 222 Handle(const sp<SurfaceFlinger>& flinger, const sp<Layer>& layer) 223 : LayerCleaner(flinger, layer), mOwner(layer) { 224 } 225 }; 226 227 return new Handle(mFlinger, this); 228} 229 230sp<IGraphicBufferProducer> Layer::getBufferQueue() const { 231 return mBufferQueue; 232} 233 234// --------------------------------------------------------------------------- 235// h/w composer set-up 236// --------------------------------------------------------------------------- 237 238Rect Layer::getContentCrop() const { 239 // this is the crop rectangle that applies to the buffer 240 // itself (as opposed to the window) 241 Rect crop; 242 if (!mCurrentCrop.isEmpty()) { 243 // if the buffer crop is defined, we use that 244 crop = mCurrentCrop; 245 } else if (mActiveBuffer != NULL) { 246 // otherwise we use the whole buffer 247 crop = mActiveBuffer->getBounds(); 248 } else { 249 // if we don't have a buffer yet, we use an empty/invalid crop 250 crop.makeInvalid(); 251 } 252 return crop; 253} 254 255static Rect reduce(const Rect& win, const Region& exclude) { 256 if (CC_LIKELY(exclude.isEmpty())) { 257 return win; 258 } 259 if (exclude.isRect()) { 260 return win.reduce(exclude.getBounds()); 261 } 262 return Region(win).subtract(exclude).getBounds(); 263} 264 265Rect Layer::computeBounds() const { 266 const Layer::State& s(getDrawingState()); 267 Rect win(s.active.w, s.active.h); 268 if (!s.active.crop.isEmpty()) { 269 win.intersect(s.active.crop, &win); 270 } 271 // subtract the transparent region and snap to the bounds 272 return reduce(win, s.activeTransparentRegion); 273} 274 275FloatRect Layer::computeCrop(const sp<const DisplayDevice>& hw) const { 276 // the content crop is the area of the content that gets scaled to the 277 // layer's size. 278 FloatRect crop(getContentCrop()); 279 280 // the active.crop is the area of the window that gets cropped, but not 281 // scaled in any ways. 282 const State& s(getDrawingState()); 283 284 // apply the projection's clipping to the window crop in 285 // layerstack space, and convert-back to layer space. 286 // if there are no window scaling involved, this operation will map to full 287 // pixels in the buffer. 288 // FIXME: the 3 lines below can produce slightly incorrect clipping when we have 289 // a viewport clipping and a window transform. we should use floating point to fix this. 290 291 Rect activeCrop(s.active.w, s.active.h); 292 if (!s.active.crop.isEmpty()) { 293 activeCrop = s.active.crop; 294 } 295 296 activeCrop = s.transform.transform(activeCrop); 297 activeCrop.intersect(hw->getViewport(), &activeCrop); 298 activeCrop = s.transform.inverse().transform(activeCrop); 299 300 // paranoia: make sure the window-crop is constrained in the 301 // window's bounds 302 activeCrop.intersect(Rect(s.active.w, s.active.h), &activeCrop); 303 304 // subtract the transparent region and snap to the bounds 305 activeCrop = reduce(activeCrop, s.activeTransparentRegion); 306 307 if (!activeCrop.isEmpty()) { 308 // Transform the window crop to match the buffer coordinate system, 309 // which means using the inverse of the current transform set on the 310 // SurfaceFlingerConsumer. 311 uint32_t invTransform = mCurrentTransform; 312 int winWidth = s.active.w; 313 int winHeight = s.active.h; 314 if (invTransform & NATIVE_WINDOW_TRANSFORM_ROT_90) { 315 invTransform ^= NATIVE_WINDOW_TRANSFORM_FLIP_V | 316 NATIVE_WINDOW_TRANSFORM_FLIP_H; 317 winWidth = s.active.h; 318 winHeight = s.active.w; 319 } 320 const Rect winCrop = activeCrop.transform( 321 invTransform, s.active.w, s.active.h); 322 323 // below, crop is intersected with winCrop expressed in crop's coordinate space 324 float xScale = crop.getWidth() / float(winWidth); 325 float yScale = crop.getHeight() / float(winHeight); 326 327 float insetL = winCrop.left * xScale; 328 float insetT = winCrop.top * yScale; 329 float insetR = (winWidth - winCrop.right ) * xScale; 330 float insetB = (winHeight - winCrop.bottom) * yScale; 331 332 crop.left += insetL; 333 crop.top += insetT; 334 crop.right -= insetR; 335 crop.bottom -= insetB; 336 } 337 return crop; 338} 339 340void Layer::setGeometry( 341 const sp<const DisplayDevice>& hw, 342 HWComposer::HWCLayerInterface& layer) 343{ 344 layer.setDefaultState(); 345 346 // enable this layer 347 layer.setSkip(false); 348 349 if (isSecure() && !hw->isSecure()) { 350 layer.setSkip(true); 351 } 352 353 // this gives us only the "orientation" component of the transform 354 const State& s(getDrawingState()); 355 if (!isOpaque() || s.alpha != 0xFF) { 356 layer.setBlending(mPremultipliedAlpha ? 357 HWC_BLENDING_PREMULT : 358 HWC_BLENDING_COVERAGE); 359 } 360 361 // apply the layer's transform, followed by the display's global transform 362 // here we're guaranteed that the layer's transform preserves rects 363 Rect frame(s.transform.transform(computeBounds())); 364 frame.intersect(hw->getViewport(), &frame); 365 const Transform& tr(hw->getTransform()); 366 layer.setFrame(tr.transform(frame)); 367 layer.setCrop(computeCrop(hw)); 368 layer.setPlaneAlpha(s.alpha); 369 370 /* 371 * Transformations are applied in this order: 372 * 1) buffer orientation/flip/mirror 373 * 2) state transformation (window manager) 374 * 3) layer orientation (screen orientation) 375 * (NOTE: the matrices are multiplied in reverse order) 376 */ 377 378 const Transform bufferOrientation(mCurrentTransform); 379 const Transform transform(tr * s.transform * bufferOrientation); 380 381 // this gives us only the "orientation" component of the transform 382 const uint32_t orientation = transform.getOrientation(); 383 if (orientation & Transform::ROT_INVALID) { 384 // we can only handle simple transformation 385 layer.setSkip(true); 386 } else { 387 layer.setTransform(orientation); 388 } 389} 390 391void Layer::setPerFrameData(const sp<const DisplayDevice>& hw, 392 HWComposer::HWCLayerInterface& layer) { 393 // we have to set the visible region on every frame because 394 // we currently free it during onLayerDisplayed(), which is called 395 // after HWComposer::commit() -- every frame. 396 // Apply this display's projection's viewport to the visible region 397 // before giving it to the HWC HAL. 398 const Transform& tr = hw->getTransform(); 399 Region visible = tr.transform(visibleRegion.intersect(hw->getViewport())); 400 layer.setVisibleRegionScreen(visible); 401 402 // NOTE: buffer can be NULL if the client never drew into this 403 // layer yet, or if we ran out of memory 404 layer.setBuffer(mActiveBuffer); 405} 406 407void Layer::setAcquireFence(const sp<const DisplayDevice>& hw, 408 HWComposer::HWCLayerInterface& layer) { 409 int fenceFd = -1; 410 411 // TODO: there is a possible optimization here: we only need to set the 412 // acquire fence the first time a new buffer is acquired on EACH display. 413 414 if (layer.getCompositionType() == HWC_OVERLAY) { 415 sp<Fence> fence = mSurfaceFlingerConsumer->getCurrentFence(); 416 if (fence->isValid()) { 417 fenceFd = fence->dup(); 418 if (fenceFd == -1) { 419 ALOGW("failed to dup layer fence, skipping sync: %d", errno); 420 } 421 } 422 } 423 layer.setAcquireFenceFd(fenceFd); 424} 425 426// --------------------------------------------------------------------------- 427// drawing... 428// --------------------------------------------------------------------------- 429 430void Layer::draw(const sp<const DisplayDevice>& hw, const Region& clip) const { 431 onDraw(hw, clip); 432} 433 434void Layer::draw(const sp<const DisplayDevice>& hw) { 435 onDraw( hw, Region(hw->bounds()) ); 436} 437 438void Layer::onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const 439{ 440 ATRACE_CALL(); 441 442 if (CC_UNLIKELY(mActiveBuffer == 0)) { 443 // the texture has not been created yet, this Layer has 444 // in fact never been drawn into. This happens frequently with 445 // SurfaceView because the WindowManager can't know when the client 446 // has drawn the first time. 447 448 // If there is nothing under us, we paint the screen in black, otherwise 449 // we just skip this update. 450 451 // figure out if there is something below us 452 Region under; 453 const SurfaceFlinger::LayerVector& drawingLayers( 454 mFlinger->mDrawingState.layersSortedByZ); 455 const size_t count = drawingLayers.size(); 456 for (size_t i=0 ; i<count ; ++i) { 457 const sp<Layer>& layer(drawingLayers[i]); 458 if (layer.get() == static_cast<Layer const*>(this)) 459 break; 460 under.orSelf( hw->getTransform().transform(layer->visibleRegion) ); 461 } 462 // if not everything below us is covered, we plug the holes! 463 Region holes(clip.subtract(under)); 464 if (!holes.isEmpty()) { 465 clearWithOpenGL(hw, holes, 0, 0, 0, 1); 466 } 467 return; 468 } 469 470 // Bind the current buffer to the GL texture, and wait for it to be 471 // ready for us to draw into. 472 status_t err = mSurfaceFlingerConsumer->bindTextureImage(); 473 if (err != NO_ERROR) { 474 ALOGW("onDraw: bindTextureImage failed (err=%d)", err); 475 // Go ahead and draw the buffer anyway; no matter what we do the screen 476 // is probably going to have something visibly wrong. 477 } 478 479 bool blackOutLayer = isProtected() || (isSecure() && !hw->isSecure()); 480 481 RenderEngine& engine(mFlinger->getRenderEngine()); 482 483 if (!blackOutLayer) { 484 // TODO: we could be more subtle with isFixedSize() 485 const bool useFiltering = getFiltering() || needsFiltering(hw) || isFixedSize(); 486 487 // Query the texture matrix given our current filtering mode. 488 float textureMatrix[16]; 489 mSurfaceFlingerConsumer->setFilteringEnabled(useFiltering); 490 mSurfaceFlingerConsumer->getTransformMatrix(textureMatrix); 491 492 // Set things up for texturing. 493 mTexture.setDimensions(mActiveBuffer->getWidth(), mActiveBuffer->getHeight()); 494 mTexture.setFiltering(useFiltering); 495 mTexture.setMatrix(textureMatrix); 496 497 engine.setupLayerTexturing(mTexture); 498 } else { 499 engine.setupLayerBlackedOut(); 500 } 501 drawWithOpenGL(hw, clip); 502 engine.disableTexturing(); 503} 504 505 506void Layer::clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip, 507 float red, float green, float blue, float alpha) const 508{ 509 computeGeometry(hw, mMesh); 510 mFlinger->getRenderEngine().fillWithColor(mMesh, red, green, blue, alpha); 511} 512 513void Layer::clearWithOpenGL( 514 const sp<const DisplayDevice>& hw, const Region& clip) const { 515 clearWithOpenGL(hw, clip, 0,0,0,0); 516} 517 518void Layer::drawWithOpenGL( 519 const sp<const DisplayDevice>& hw, const Region& clip) const { 520 const uint32_t fbHeight = hw->getHeight(); 521 const State& s(getDrawingState()); 522 523 computeGeometry(hw, mMesh); 524 525 /* 526 * NOTE: the way we compute the texture coordinates here produces 527 * different results than when we take the HWC path -- in the later case 528 * the "source crop" is rounded to texel boundaries. 529 * This can produce significantly different results when the texture 530 * is scaled by a large amount. 531 * 532 * The GL code below is more logical (imho), and the difference with 533 * HWC is due to a limitation of the HWC API to integers -- a question 534 * is suspend is wether we should ignore this problem or revert to 535 * GL composition when a buffer scaling is applied (maybe with some 536 * minimal value)? Or, we could make GL behave like HWC -- but this feel 537 * like more of a hack. 538 */ 539 const Rect win(computeBounds()); 540 541 float left = float(win.left) / float(s.active.w); 542 float top = float(win.top) / float(s.active.h); 543 float right = float(win.right) / float(s.active.w); 544 float bottom = float(win.bottom) / float(s.active.h); 545 546 // TODO: we probably want to generate the texture coords with the mesh 547 // here we assume that we only have 4 vertices 548 Mesh::VertexArray texCoords(mMesh.getTexCoordArray()); 549 texCoords[0].s = left; 550 texCoords[0].t = 1.0f - top; 551 texCoords[1].s = left; 552 texCoords[1].t = 1.0f - bottom; 553 texCoords[2].s = right; 554 texCoords[2].t = 1.0f - bottom; 555 texCoords[3].s = right; 556 texCoords[3].t = 1.0f - top; 557 558 RenderEngine& engine(mFlinger->getRenderEngine()); 559 engine.setupLayerBlending(mPremultipliedAlpha, isOpaque(), s.alpha); 560 engine.drawMesh(mMesh); 561 engine.disableBlending(); 562} 563 564void Layer::setFiltering(bool filtering) { 565 mFiltering = filtering; 566} 567 568bool Layer::getFiltering() const { 569 return mFiltering; 570} 571 572// As documented in libhardware header, formats in the range 573// 0x100 - 0x1FF are specific to the HAL implementation, and 574// are known to have no alpha channel 575// TODO: move definition for device-specific range into 576// hardware.h, instead of using hard-coded values here. 577#define HARDWARE_IS_DEVICE_FORMAT(f) ((f) >= 0x100 && (f) <= 0x1FF) 578 579bool Layer::getOpacityForFormat(uint32_t format) { 580 if (HARDWARE_IS_DEVICE_FORMAT(format)) { 581 return true; 582 } 583 switch (format) { 584 case HAL_PIXEL_FORMAT_RGBA_8888: 585 case HAL_PIXEL_FORMAT_BGRA_8888: 586 case HAL_PIXEL_FORMAT_sRGB_A_8888: 587 return false; 588 } 589 // in all other case, we have no blending (also for unknown formats) 590 return true; 591} 592 593// ---------------------------------------------------------------------------- 594// local state 595// ---------------------------------------------------------------------------- 596 597void Layer::computeGeometry(const sp<const DisplayDevice>& hw, Mesh& mesh) const 598{ 599 const Layer::State& s(getDrawingState()); 600 const Transform tr(hw->getTransform() * s.transform); 601 const uint32_t hw_h = hw->getHeight(); 602 Rect win(s.active.w, s.active.h); 603 if (!s.active.crop.isEmpty()) { 604 win.intersect(s.active.crop, &win); 605 } 606 // subtract the transparent region and snap to the bounds 607 win = reduce(win, s.activeTransparentRegion); 608 609 Mesh::VertexArray position(mesh.getPositionArray()); 610 tr.transform(position[0], win.left, win.top); 611 tr.transform(position[1], win.left, win.bottom); 612 tr.transform(position[2], win.right, win.bottom); 613 tr.transform(position[3], win.right, win.top); 614 for (size_t i=0 ; i<4 ; i++) { 615 position[i].y = hw_h - position[i].y; 616 } 617} 618 619bool Layer::isOpaque() const 620{ 621 // if we don't have a buffer yet, we're translucent regardless of the 622 // layer's opaque flag. 623 if (mActiveBuffer == 0) { 624 return false; 625 } 626 627 // if the layer has the opaque flag, then we're always opaque, 628 // otherwise we use the current buffer's format. 629 return mOpaqueLayer || mCurrentOpacity; 630} 631 632bool Layer::isProtected() const 633{ 634 const sp<GraphicBuffer>& activeBuffer(mActiveBuffer); 635 return (activeBuffer != 0) && 636 (activeBuffer->getUsage() & GRALLOC_USAGE_PROTECTED); 637} 638 639bool Layer::isFixedSize() const { 640 return mCurrentScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE; 641} 642 643bool Layer::isCropped() const { 644 return !mCurrentCrop.isEmpty(); 645} 646 647bool Layer::needsFiltering(const sp<const DisplayDevice>& hw) const { 648 return mNeedsFiltering || hw->needsFiltering(); 649} 650 651void Layer::setVisibleRegion(const Region& visibleRegion) { 652 // always called from main thread 653 this->visibleRegion = visibleRegion; 654} 655 656void Layer::setCoveredRegion(const Region& coveredRegion) { 657 // always called from main thread 658 this->coveredRegion = coveredRegion; 659} 660 661void Layer::setVisibleNonTransparentRegion(const Region& 662 setVisibleNonTransparentRegion) { 663 // always called from main thread 664 this->visibleNonTransparentRegion = setVisibleNonTransparentRegion; 665} 666 667// ---------------------------------------------------------------------------- 668// transaction 669// ---------------------------------------------------------------------------- 670 671uint32_t Layer::doTransaction(uint32_t flags) { 672 ATRACE_CALL(); 673 674 const Layer::State& s(getDrawingState()); 675 const Layer::State& c(getCurrentState()); 676 677 const bool sizeChanged = (c.requested.w != s.requested.w) || 678 (c.requested.h != s.requested.h); 679 680 if (sizeChanged) { 681 // the size changed, we need to ask our client to request a new buffer 682 ALOGD_IF(DEBUG_RESIZE, 683 "doTransaction: geometry (layer=%p '%s'), tr=%02x, scalingMode=%d\n" 684 " current={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" 685 " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n" 686 " drawing={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" 687 " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n", 688 this, getName().string(), mCurrentTransform, mCurrentScalingMode, 689 c.active.w, c.active.h, 690 c.active.crop.left, 691 c.active.crop.top, 692 c.active.crop.right, 693 c.active.crop.bottom, 694 c.active.crop.getWidth(), 695 c.active.crop.getHeight(), 696 c.requested.w, c.requested.h, 697 c.requested.crop.left, 698 c.requested.crop.top, 699 c.requested.crop.right, 700 c.requested.crop.bottom, 701 c.requested.crop.getWidth(), 702 c.requested.crop.getHeight(), 703 s.active.w, s.active.h, 704 s.active.crop.left, 705 s.active.crop.top, 706 s.active.crop.right, 707 s.active.crop.bottom, 708 s.active.crop.getWidth(), 709 s.active.crop.getHeight(), 710 s.requested.w, s.requested.h, 711 s.requested.crop.left, 712 s.requested.crop.top, 713 s.requested.crop.right, 714 s.requested.crop.bottom, 715 s.requested.crop.getWidth(), 716 s.requested.crop.getHeight()); 717 718 // record the new size, form this point on, when the client request 719 // a buffer, it'll get the new size. 720 mSurfaceFlingerConsumer->setDefaultBufferSize( 721 c.requested.w, c.requested.h); 722 } 723 724 if (!isFixedSize()) { 725 726 const bool resizePending = (c.requested.w != c.active.w) || 727 (c.requested.h != c.active.h); 728 729 if (resizePending) { 730 // don't let Layer::doTransaction update the drawing state 731 // if we have a pending resize, unless we are in fixed-size mode. 732 // the drawing state will be updated only once we receive a buffer 733 // with the correct size. 734 // 735 // in particular, we want to make sure the clip (which is part 736 // of the geometry state) is latched together with the size but is 737 // latched immediately when no resizing is involved. 738 739 flags |= eDontUpdateGeometryState; 740 } 741 } 742 743 // always set active to requested, unless we're asked not to 744 // this is used by Layer, which special cases resizes. 745 if (flags & eDontUpdateGeometryState) { 746 } else { 747 Layer::State& editCurrentState(getCurrentState()); 748 editCurrentState.active = c.requested; 749 } 750 751 if (s.active != c.active) { 752 // invalidate and recompute the visible regions if needed 753 flags |= Layer::eVisibleRegion; 754 } 755 756 if (c.sequence != s.sequence) { 757 // invalidate and recompute the visible regions if needed 758 flags |= eVisibleRegion; 759 this->contentDirty = true; 760 761 // we may use linear filtering, if the matrix scales us 762 const uint8_t type = c.transform.getType(); 763 mNeedsFiltering = (!c.transform.preserveRects() || 764 (type >= Transform::SCALE)); 765 } 766 767 // Commit the transaction 768 commitTransaction(); 769 return flags; 770} 771 772void Layer::commitTransaction() { 773 mDrawingState = mCurrentState; 774} 775 776uint32_t Layer::getTransactionFlags(uint32_t flags) { 777 return android_atomic_and(~flags, &mTransactionFlags) & flags; 778} 779 780uint32_t Layer::setTransactionFlags(uint32_t flags) { 781 return android_atomic_or(flags, &mTransactionFlags); 782} 783 784bool Layer::setPosition(float x, float y) { 785 if (mCurrentState.transform.tx() == x && mCurrentState.transform.ty() == y) 786 return false; 787 mCurrentState.sequence++; 788 mCurrentState.transform.set(x, y); 789 setTransactionFlags(eTransactionNeeded); 790 return true; 791} 792bool Layer::setLayer(uint32_t z) { 793 if (mCurrentState.z == z) 794 return false; 795 mCurrentState.sequence++; 796 mCurrentState.z = z; 797 setTransactionFlags(eTransactionNeeded); 798 return true; 799} 800bool Layer::setSize(uint32_t w, uint32_t h) { 801 if (mCurrentState.requested.w == w && mCurrentState.requested.h == h) 802 return false; 803 mCurrentState.requested.w = w; 804 mCurrentState.requested.h = h; 805 setTransactionFlags(eTransactionNeeded); 806 return true; 807} 808bool Layer::setAlpha(uint8_t alpha) { 809 if (mCurrentState.alpha == alpha) 810 return false; 811 mCurrentState.sequence++; 812 mCurrentState.alpha = alpha; 813 setTransactionFlags(eTransactionNeeded); 814 return true; 815} 816bool Layer::setMatrix(const layer_state_t::matrix22_t& matrix) { 817 mCurrentState.sequence++; 818 mCurrentState.transform.set( 819 matrix.dsdx, matrix.dsdy, matrix.dtdx, matrix.dtdy); 820 setTransactionFlags(eTransactionNeeded); 821 return true; 822} 823bool Layer::setTransparentRegionHint(const Region& transparent) { 824 mCurrentState.requestedTransparentRegion = transparent; 825 setTransactionFlags(eTransactionNeeded); 826 return true; 827} 828bool Layer::setFlags(uint8_t flags, uint8_t mask) { 829 const uint32_t newFlags = (mCurrentState.flags & ~mask) | (flags & mask); 830 if (mCurrentState.flags == newFlags) 831 return false; 832 mCurrentState.sequence++; 833 mCurrentState.flags = newFlags; 834 setTransactionFlags(eTransactionNeeded); 835 return true; 836} 837bool Layer::setCrop(const Rect& crop) { 838 if (mCurrentState.requested.crop == crop) 839 return false; 840 mCurrentState.sequence++; 841 mCurrentState.requested.crop = crop; 842 setTransactionFlags(eTransactionNeeded); 843 return true; 844} 845 846bool Layer::setLayerStack(uint32_t layerStack) { 847 if (mCurrentState.layerStack == layerStack) 848 return false; 849 mCurrentState.sequence++; 850 mCurrentState.layerStack = layerStack; 851 setTransactionFlags(eTransactionNeeded); 852 return true; 853} 854 855// ---------------------------------------------------------------------------- 856// pageflip handling... 857// ---------------------------------------------------------------------------- 858 859bool Layer::onPreComposition() { 860 mRefreshPending = false; 861 return mQueuedFrames > 0; 862} 863 864void Layer::onPostComposition() { 865 if (mFrameLatencyNeeded) { 866 nsecs_t desiredPresentTime = mSurfaceFlingerConsumer->getTimestamp(); 867 mFrameTracker.setDesiredPresentTime(desiredPresentTime); 868 869 sp<Fence> frameReadyFence = mSurfaceFlingerConsumer->getCurrentFence(); 870 if (frameReadyFence->isValid()) { 871 mFrameTracker.setFrameReadyFence(frameReadyFence); 872 } else { 873 // There was no fence for this frame, so assume that it was ready 874 // to be presented at the desired present time. 875 mFrameTracker.setFrameReadyTime(desiredPresentTime); 876 } 877 878 const HWComposer& hwc = mFlinger->getHwComposer(); 879 sp<Fence> presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY); 880 if (presentFence->isValid()) { 881 mFrameTracker.setActualPresentFence(presentFence); 882 } else { 883 // The HWC doesn't support present fences, so use the refresh 884 // timestamp instead. 885 nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); 886 mFrameTracker.setActualPresentTime(presentTime); 887 } 888 889 mFrameTracker.advanceFrame(); 890 mFrameLatencyNeeded = false; 891 } 892} 893 894bool Layer::isVisible() const { 895 const Layer::State& s(mDrawingState); 896 return !(s.flags & layer_state_t::eLayerHidden) && s.alpha 897 && (mActiveBuffer != NULL); 898} 899 900Region Layer::latchBuffer(bool& recomputeVisibleRegions) 901{ 902 ATRACE_CALL(); 903 904 Region outDirtyRegion; 905 if (mQueuedFrames > 0) { 906 907 // if we've already called updateTexImage() without going through 908 // a composition step, we have to skip this layer at this point 909 // because we cannot call updateTeximage() without a corresponding 910 // compositionComplete() call. 911 // we'll trigger an update in onPreComposition(). 912 if (mRefreshPending) { 913 return outDirtyRegion; 914 } 915 916 // Capture the old state of the layer for comparisons later 917 const bool oldOpacity = isOpaque(); 918 sp<GraphicBuffer> oldActiveBuffer = mActiveBuffer; 919 920 struct Reject : public SurfaceFlingerConsumer::BufferRejecter { 921 Layer::State& front; 922 Layer::State& current; 923 bool& recomputeVisibleRegions; 924 Reject(Layer::State& front, Layer::State& current, 925 bool& recomputeVisibleRegions) 926 : front(front), current(current), 927 recomputeVisibleRegions(recomputeVisibleRegions) { 928 } 929 930 virtual bool reject(const sp<GraphicBuffer>& buf, 931 const IGraphicBufferConsumer::BufferItem& item) { 932 if (buf == NULL) { 933 return false; 934 } 935 936 uint32_t bufWidth = buf->getWidth(); 937 uint32_t bufHeight = buf->getHeight(); 938 939 // check that we received a buffer of the right size 940 // (Take the buffer's orientation into account) 941 if (item.mTransform & Transform::ROT_90) { 942 swap(bufWidth, bufHeight); 943 } 944 945 bool isFixedSize = item.mScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE; 946 if (front.active != front.requested) { 947 948 if (isFixedSize || 949 (bufWidth == front.requested.w && 950 bufHeight == front.requested.h)) 951 { 952 // Here we pretend the transaction happened by updating the 953 // current and drawing states. Drawing state is only accessed 954 // in this thread, no need to have it locked 955 front.active = front.requested; 956 957 // We also need to update the current state so that 958 // we don't end-up overwriting the drawing state with 959 // this stale current state during the next transaction 960 // 961 // NOTE: We don't need to hold the transaction lock here 962 // because State::active is only accessed from this thread. 963 current.active = front.active; 964 965 // recompute visible region 966 recomputeVisibleRegions = true; 967 } 968 969 ALOGD_IF(DEBUG_RESIZE, 970 "latchBuffer/reject: buffer (%ux%u, tr=%02x), scalingMode=%d\n" 971 " drawing={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" 972 " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n", 973 bufWidth, bufHeight, item.mTransform, item.mScalingMode, 974 front.active.w, front.active.h, 975 front.active.crop.left, 976 front.active.crop.top, 977 front.active.crop.right, 978 front.active.crop.bottom, 979 front.active.crop.getWidth(), 980 front.active.crop.getHeight(), 981 front.requested.w, front.requested.h, 982 front.requested.crop.left, 983 front.requested.crop.top, 984 front.requested.crop.right, 985 front.requested.crop.bottom, 986 front.requested.crop.getWidth(), 987 front.requested.crop.getHeight()); 988 } 989 990 if (!isFixedSize) { 991 if (front.active.w != bufWidth || 992 front.active.h != bufHeight) { 993 // reject this buffer 994 return true; 995 } 996 } 997 998 // if the transparent region has changed (this test is 999 // conservative, but that's fine, worst case we're doing 1000 // a bit of extra work), we latch the new one and we 1001 // trigger a visible-region recompute. 1002 if (!front.activeTransparentRegion.isTriviallyEqual( 1003 front.requestedTransparentRegion)) { 1004 front.activeTransparentRegion = front.requestedTransparentRegion; 1005 1006 // We also need to update the current state so that 1007 // we don't end-up overwriting the drawing state with 1008 // this stale current state during the next transaction 1009 // 1010 // NOTE: We don't need to hold the transaction lock here 1011 // because State::active is only accessed from this thread. 1012 current.activeTransparentRegion = front.activeTransparentRegion; 1013 1014 // recompute visible region 1015 recomputeVisibleRegions = true; 1016 } 1017 1018 return false; 1019 } 1020 }; 1021 1022 1023 Reject r(mDrawingState, getCurrentState(), recomputeVisibleRegions); 1024 1025 status_t updateResult = mSurfaceFlingerConsumer->updateTexImage(&r); 1026 if (updateResult == BufferQueue::PRESENT_LATER) { 1027 // Producer doesn't want buffer to be displayed yet. Signal a 1028 // layer update so we check again at the next opportunity. 1029 mFlinger->signalLayerUpdate(); 1030 return outDirtyRegion; 1031 } 1032 1033 // Decrement the queued-frames count. Signal another event if we 1034 // have more frames pending. 1035 if (android_atomic_dec(&mQueuedFrames) > 1) { 1036 mFlinger->signalLayerUpdate(); 1037 } 1038 1039 if (updateResult != NO_ERROR) { 1040 // something happened! 1041 recomputeVisibleRegions = true; 1042 return outDirtyRegion; 1043 } 1044 1045 // update the active buffer 1046 mActiveBuffer = mSurfaceFlingerConsumer->getCurrentBuffer(); 1047 if (mActiveBuffer == NULL) { 1048 // this can only happen if the very first buffer was rejected. 1049 return outDirtyRegion; 1050 } 1051 1052 mRefreshPending = true; 1053 mFrameLatencyNeeded = true; 1054 if (oldActiveBuffer == NULL) { 1055 // the first time we receive a buffer, we need to trigger a 1056 // geometry invalidation. 1057 recomputeVisibleRegions = true; 1058 } 1059 1060 Rect crop(mSurfaceFlingerConsumer->getCurrentCrop()); 1061 const uint32_t transform(mSurfaceFlingerConsumer->getCurrentTransform()); 1062 const uint32_t scalingMode(mSurfaceFlingerConsumer->getCurrentScalingMode()); 1063 if ((crop != mCurrentCrop) || 1064 (transform != mCurrentTransform) || 1065 (scalingMode != mCurrentScalingMode)) 1066 { 1067 mCurrentCrop = crop; 1068 mCurrentTransform = transform; 1069 mCurrentScalingMode = scalingMode; 1070 recomputeVisibleRegions = true; 1071 } 1072 1073 if (oldActiveBuffer != NULL) { 1074 uint32_t bufWidth = mActiveBuffer->getWidth(); 1075 uint32_t bufHeight = mActiveBuffer->getHeight(); 1076 if (bufWidth != uint32_t(oldActiveBuffer->width) || 1077 bufHeight != uint32_t(oldActiveBuffer->height)) { 1078 recomputeVisibleRegions = true; 1079 } 1080 } 1081 1082 mCurrentOpacity = getOpacityForFormat(mActiveBuffer->format); 1083 if (oldOpacity != isOpaque()) { 1084 recomputeVisibleRegions = true; 1085 } 1086 1087 // FIXME: postedRegion should be dirty & bounds 1088 const Layer::State& s(getDrawingState()); 1089 Region dirtyRegion(Rect(s.active.w, s.active.h)); 1090 1091 // transform the dirty region to window-manager space 1092 outDirtyRegion = (s.transform.transform(dirtyRegion)); 1093 } 1094 return outDirtyRegion; 1095} 1096 1097uint32_t Layer::getEffectiveUsage(uint32_t usage) const 1098{ 1099 // TODO: should we do something special if mSecure is set? 1100 if (mProtectedByApp) { 1101 // need a hardware-protected path to external video sink 1102 usage |= GraphicBuffer::USAGE_PROTECTED; 1103 } 1104 usage |= GraphicBuffer::USAGE_HW_COMPOSER; 1105 return usage; 1106} 1107 1108void Layer::updateTransformHint(const sp<const DisplayDevice>& hw) const { 1109 uint32_t orientation = 0; 1110 if (!mFlinger->mDebugDisableTransformHint) { 1111 // The transform hint is used to improve performance, but we can 1112 // only have a single transform hint, it cannot 1113 // apply to all displays. 1114 const Transform& planeTransform(hw->getTransform()); 1115 orientation = planeTransform.getOrientation(); 1116 if (orientation & Transform::ROT_INVALID) { 1117 orientation = 0; 1118 } 1119 } 1120 mSurfaceFlingerConsumer->setTransformHint(orientation); 1121} 1122 1123// ---------------------------------------------------------------------------- 1124// debugging 1125// ---------------------------------------------------------------------------- 1126 1127void Layer::dump(String8& result, Colorizer& colorizer) const 1128{ 1129 const Layer::State& s(getDrawingState()); 1130 1131 colorizer.colorize(result, Colorizer::GREEN); 1132 result.appendFormat( 1133 "+ %s %p (%s)\n", 1134 getTypeId(), this, getName().string()); 1135 colorizer.reset(result); 1136 1137 s.activeTransparentRegion.dump(result, "transparentRegion"); 1138 visibleRegion.dump(result, "visibleRegion"); 1139 sp<Client> client(mClientRef.promote()); 1140 1141 result.appendFormat( " " 1142 "layerStack=%4d, z=%9d, pos=(%g,%g), size=(%4d,%4d), crop=(%4d,%4d,%4d,%4d), " 1143 "isOpaque=%1d, invalidate=%1d, " 1144 "alpha=0x%02x, flags=0x%08x, tr=[%.2f, %.2f][%.2f, %.2f]\n" 1145 " client=%p\n", 1146 s.layerStack, s.z, s.transform.tx(), s.transform.ty(), s.active.w, s.active.h, 1147 s.active.crop.left, s.active.crop.top, 1148 s.active.crop.right, s.active.crop.bottom, 1149 isOpaque(), contentDirty, 1150 s.alpha, s.flags, 1151 s.transform[0][0], s.transform[0][1], 1152 s.transform[1][0], s.transform[1][1], 1153 client.get()); 1154 1155 sp<const GraphicBuffer> buf0(mActiveBuffer); 1156 uint32_t w0=0, h0=0, s0=0, f0=0; 1157 if (buf0 != 0) { 1158 w0 = buf0->getWidth(); 1159 h0 = buf0->getHeight(); 1160 s0 = buf0->getStride(); 1161 f0 = buf0->format; 1162 } 1163 result.appendFormat( 1164 " " 1165 "format=%2d, activeBuffer=[%4ux%4u:%4u,%3X]," 1166 " queued-frames=%d, mRefreshPending=%d\n", 1167 mFormat, w0, h0, s0,f0, 1168 mQueuedFrames, mRefreshPending); 1169 1170 if (mSurfaceFlingerConsumer != 0) { 1171 mSurfaceFlingerConsumer->dump(result, " "); 1172 } 1173} 1174 1175void Layer::dumpStats(String8& result) const { 1176 mFrameTracker.dump(result); 1177} 1178 1179void Layer::clearStats() { 1180 mFrameTracker.clear(); 1181} 1182 1183void Layer::logFrameStats() { 1184 mFrameTracker.logAndResetStats(mName); 1185} 1186 1187// --------------------------------------------------------------------------- 1188 1189Layer::LayerCleaner::LayerCleaner(const sp<SurfaceFlinger>& flinger, 1190 const sp<Layer>& layer) 1191 : mFlinger(flinger), mLayer(layer) { 1192} 1193 1194Layer::LayerCleaner::~LayerCleaner() { 1195 // destroy client resources 1196 mFlinger->onLayerDestroyed(mLayer); 1197} 1198 1199// --------------------------------------------------------------------------- 1200}; // namespace android 1201 1202#if defined(__gl_h_) 1203#error "don't include gl/gl.h in this file" 1204#endif 1205 1206#if defined(__gl2_h_) 1207#error "don't include gl2/gl2.h in this file" 1208#endif 1209