Layer.cpp revision 19733a32799f792125913e746e8644d16f8dc223
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 RenderEngine& engine(mFlinger->getRenderEngine()); 510 computeGeometry(hw, mMesh); 511 engine.setupFillWithColor(red, green, blue, alpha); 512 engine.drawMesh(mMesh); 513} 514 515void Layer::clearWithOpenGL( 516 const sp<const DisplayDevice>& hw, const Region& clip) const { 517 clearWithOpenGL(hw, clip, 0,0,0,0); 518} 519 520void Layer::drawWithOpenGL( 521 const sp<const DisplayDevice>& hw, const Region& clip) const { 522 const uint32_t fbHeight = hw->getHeight(); 523 const State& s(getDrawingState()); 524 525 computeGeometry(hw, mMesh); 526 527 /* 528 * NOTE: the way we compute the texture coordinates here produces 529 * different results than when we take the HWC path -- in the later case 530 * the "source crop" is rounded to texel boundaries. 531 * This can produce significantly different results when the texture 532 * is scaled by a large amount. 533 * 534 * The GL code below is more logical (imho), and the difference with 535 * HWC is due to a limitation of the HWC API to integers -- a question 536 * is suspend is wether we should ignore this problem or revert to 537 * GL composition when a buffer scaling is applied (maybe with some 538 * minimal value)? Or, we could make GL behave like HWC -- but this feel 539 * like more of a hack. 540 */ 541 const Rect win(computeBounds()); 542 543 float left = float(win.left) / float(s.active.w); 544 float top = float(win.top) / float(s.active.h); 545 float right = float(win.right) / float(s.active.w); 546 float bottom = float(win.bottom) / float(s.active.h); 547 548 // TODO: we probably want to generate the texture coords with the mesh 549 // here we assume that we only have 4 vertices 550 Mesh::VertexArray texCoords(mMesh.getTexCoordArray()); 551 texCoords[0].s = left; 552 texCoords[0].t = 1.0f - top; 553 texCoords[1].s = left; 554 texCoords[1].t = 1.0f - bottom; 555 texCoords[2].s = right; 556 texCoords[2].t = 1.0f - bottom; 557 texCoords[3].s = right; 558 texCoords[3].t = 1.0f - top; 559 560 RenderEngine& engine(mFlinger->getRenderEngine()); 561 engine.setupLayerBlending(mPremultipliedAlpha, isOpaque(), s.alpha); 562 engine.drawMesh(mMesh); 563 engine.disableBlending(); 564} 565 566void Layer::setFiltering(bool filtering) { 567 mFiltering = filtering; 568} 569 570bool Layer::getFiltering() const { 571 return mFiltering; 572} 573 574// As documented in libhardware header, formats in the range 575// 0x100 - 0x1FF are specific to the HAL implementation, and 576// are known to have no alpha channel 577// TODO: move definition for device-specific range into 578// hardware.h, instead of using hard-coded values here. 579#define HARDWARE_IS_DEVICE_FORMAT(f) ((f) >= 0x100 && (f) <= 0x1FF) 580 581bool Layer::getOpacityForFormat(uint32_t format) { 582 if (HARDWARE_IS_DEVICE_FORMAT(format)) { 583 return true; 584 } 585 switch (format) { 586 case HAL_PIXEL_FORMAT_RGBA_8888: 587 case HAL_PIXEL_FORMAT_BGRA_8888: 588 case HAL_PIXEL_FORMAT_sRGB_A_8888: 589 return false; 590 } 591 // in all other case, we have no blending (also for unknown formats) 592 return true; 593} 594 595// ---------------------------------------------------------------------------- 596// local state 597// ---------------------------------------------------------------------------- 598 599void Layer::computeGeometry(const sp<const DisplayDevice>& hw, Mesh& mesh) const 600{ 601 const Layer::State& s(getDrawingState()); 602 const Transform tr(hw->getTransform() * s.transform); 603 const uint32_t hw_h = hw->getHeight(); 604 Rect win(s.active.w, s.active.h); 605 if (!s.active.crop.isEmpty()) { 606 win.intersect(s.active.crop, &win); 607 } 608 // subtract the transparent region and snap to the bounds 609 win = reduce(win, s.activeTransparentRegion); 610 611 Mesh::VertexArray position(mesh.getPositionArray()); 612 tr.transform(position[0], win.left, win.top); 613 tr.transform(position[1], win.left, win.bottom); 614 tr.transform(position[2], win.right, win.bottom); 615 tr.transform(position[3], win.right, win.top); 616 for (size_t i=0 ; i<4 ; i++) { 617 position[i].y = hw_h - position[i].y; 618 } 619} 620 621bool Layer::isOpaque() const 622{ 623 // if we don't have a buffer yet, we're translucent regardless of the 624 // layer's opaque flag. 625 if (mActiveBuffer == 0) { 626 return false; 627 } 628 629 // if the layer has the opaque flag, then we're always opaque, 630 // otherwise we use the current buffer's format. 631 return mOpaqueLayer || mCurrentOpacity; 632} 633 634bool Layer::isProtected() const 635{ 636 const sp<GraphicBuffer>& activeBuffer(mActiveBuffer); 637 return (activeBuffer != 0) && 638 (activeBuffer->getUsage() & GRALLOC_USAGE_PROTECTED); 639} 640 641bool Layer::isFixedSize() const { 642 return mCurrentScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE; 643} 644 645bool Layer::isCropped() const { 646 return !mCurrentCrop.isEmpty(); 647} 648 649bool Layer::needsFiltering(const sp<const DisplayDevice>& hw) const { 650 return mNeedsFiltering || hw->needsFiltering(); 651} 652 653void Layer::setVisibleRegion(const Region& visibleRegion) { 654 // always called from main thread 655 this->visibleRegion = visibleRegion; 656} 657 658void Layer::setCoveredRegion(const Region& coveredRegion) { 659 // always called from main thread 660 this->coveredRegion = coveredRegion; 661} 662 663void Layer::setVisibleNonTransparentRegion(const Region& 664 setVisibleNonTransparentRegion) { 665 // always called from main thread 666 this->visibleNonTransparentRegion = setVisibleNonTransparentRegion; 667} 668 669// ---------------------------------------------------------------------------- 670// transaction 671// ---------------------------------------------------------------------------- 672 673uint32_t Layer::doTransaction(uint32_t flags) { 674 ATRACE_CALL(); 675 676 const Layer::State& s(getDrawingState()); 677 const Layer::State& c(getCurrentState()); 678 679 const bool sizeChanged = (c.requested.w != s.requested.w) || 680 (c.requested.h != s.requested.h); 681 682 if (sizeChanged) { 683 // the size changed, we need to ask our client to request a new buffer 684 ALOGD_IF(DEBUG_RESIZE, 685 "doTransaction: geometry (layer=%p '%s'), tr=%02x, scalingMode=%d\n" 686 " current={ 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 " drawing={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" 689 " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n", 690 this, getName().string(), mCurrentTransform, mCurrentScalingMode, 691 c.active.w, c.active.h, 692 c.active.crop.left, 693 c.active.crop.top, 694 c.active.crop.right, 695 c.active.crop.bottom, 696 c.active.crop.getWidth(), 697 c.active.crop.getHeight(), 698 c.requested.w, c.requested.h, 699 c.requested.crop.left, 700 c.requested.crop.top, 701 c.requested.crop.right, 702 c.requested.crop.bottom, 703 c.requested.crop.getWidth(), 704 c.requested.crop.getHeight(), 705 s.active.w, s.active.h, 706 s.active.crop.left, 707 s.active.crop.top, 708 s.active.crop.right, 709 s.active.crop.bottom, 710 s.active.crop.getWidth(), 711 s.active.crop.getHeight(), 712 s.requested.w, s.requested.h, 713 s.requested.crop.left, 714 s.requested.crop.top, 715 s.requested.crop.right, 716 s.requested.crop.bottom, 717 s.requested.crop.getWidth(), 718 s.requested.crop.getHeight()); 719 720 // record the new size, form this point on, when the client request 721 // a buffer, it'll get the new size. 722 mSurfaceFlingerConsumer->setDefaultBufferSize( 723 c.requested.w, c.requested.h); 724 } 725 726 if (!isFixedSize()) { 727 728 const bool resizePending = (c.requested.w != c.active.w) || 729 (c.requested.h != c.active.h); 730 731 if (resizePending) { 732 // don't let Layer::doTransaction update the drawing state 733 // if we have a pending resize, unless we are in fixed-size mode. 734 // the drawing state will be updated only once we receive a buffer 735 // with the correct size. 736 // 737 // in particular, we want to make sure the clip (which is part 738 // of the geometry state) is latched together with the size but is 739 // latched immediately when no resizing is involved. 740 741 flags |= eDontUpdateGeometryState; 742 } 743 } 744 745 // always set active to requested, unless we're asked not to 746 // this is used by Layer, which special cases resizes. 747 if (flags & eDontUpdateGeometryState) { 748 } else { 749 Layer::State& editCurrentState(getCurrentState()); 750 editCurrentState.active = c.requested; 751 } 752 753 if (s.active != c.active) { 754 // invalidate and recompute the visible regions if needed 755 flags |= Layer::eVisibleRegion; 756 } 757 758 if (c.sequence != s.sequence) { 759 // invalidate and recompute the visible regions if needed 760 flags |= eVisibleRegion; 761 this->contentDirty = true; 762 763 // we may use linear filtering, if the matrix scales us 764 const uint8_t type = c.transform.getType(); 765 mNeedsFiltering = (!c.transform.preserveRects() || 766 (type >= Transform::SCALE)); 767 } 768 769 // Commit the transaction 770 commitTransaction(); 771 return flags; 772} 773 774void Layer::commitTransaction() { 775 mDrawingState = mCurrentState; 776} 777 778uint32_t Layer::getTransactionFlags(uint32_t flags) { 779 return android_atomic_and(~flags, &mTransactionFlags) & flags; 780} 781 782uint32_t Layer::setTransactionFlags(uint32_t flags) { 783 return android_atomic_or(flags, &mTransactionFlags); 784} 785 786bool Layer::setPosition(float x, float y) { 787 if (mCurrentState.transform.tx() == x && mCurrentState.transform.ty() == y) 788 return false; 789 mCurrentState.sequence++; 790 mCurrentState.transform.set(x, y); 791 setTransactionFlags(eTransactionNeeded); 792 return true; 793} 794bool Layer::setLayer(uint32_t z) { 795 if (mCurrentState.z == z) 796 return false; 797 mCurrentState.sequence++; 798 mCurrentState.z = z; 799 setTransactionFlags(eTransactionNeeded); 800 return true; 801} 802bool Layer::setSize(uint32_t w, uint32_t h) { 803 if (mCurrentState.requested.w == w && mCurrentState.requested.h == h) 804 return false; 805 mCurrentState.requested.w = w; 806 mCurrentState.requested.h = h; 807 setTransactionFlags(eTransactionNeeded); 808 return true; 809} 810bool Layer::setAlpha(uint8_t alpha) { 811 if (mCurrentState.alpha == alpha) 812 return false; 813 mCurrentState.sequence++; 814 mCurrentState.alpha = alpha; 815 setTransactionFlags(eTransactionNeeded); 816 return true; 817} 818bool Layer::setMatrix(const layer_state_t::matrix22_t& matrix) { 819 mCurrentState.sequence++; 820 mCurrentState.transform.set( 821 matrix.dsdx, matrix.dsdy, matrix.dtdx, matrix.dtdy); 822 setTransactionFlags(eTransactionNeeded); 823 return true; 824} 825bool Layer::setTransparentRegionHint(const Region& transparent) { 826 mCurrentState.requestedTransparentRegion = transparent; 827 setTransactionFlags(eTransactionNeeded); 828 return true; 829} 830bool Layer::setFlags(uint8_t flags, uint8_t mask) { 831 const uint32_t newFlags = (mCurrentState.flags & ~mask) | (flags & mask); 832 if (mCurrentState.flags == newFlags) 833 return false; 834 mCurrentState.sequence++; 835 mCurrentState.flags = newFlags; 836 setTransactionFlags(eTransactionNeeded); 837 return true; 838} 839bool Layer::setCrop(const Rect& crop) { 840 if (mCurrentState.requested.crop == crop) 841 return false; 842 mCurrentState.sequence++; 843 mCurrentState.requested.crop = crop; 844 setTransactionFlags(eTransactionNeeded); 845 return true; 846} 847 848bool Layer::setLayerStack(uint32_t layerStack) { 849 if (mCurrentState.layerStack == layerStack) 850 return false; 851 mCurrentState.sequence++; 852 mCurrentState.layerStack = layerStack; 853 setTransactionFlags(eTransactionNeeded); 854 return true; 855} 856 857// ---------------------------------------------------------------------------- 858// pageflip handling... 859// ---------------------------------------------------------------------------- 860 861bool Layer::onPreComposition() { 862 mRefreshPending = false; 863 return mQueuedFrames > 0; 864} 865 866void Layer::onPostComposition() { 867 if (mFrameLatencyNeeded) { 868 nsecs_t desiredPresentTime = mSurfaceFlingerConsumer->getTimestamp(); 869 mFrameTracker.setDesiredPresentTime(desiredPresentTime); 870 871 sp<Fence> frameReadyFence = mSurfaceFlingerConsumer->getCurrentFence(); 872 if (frameReadyFence->isValid()) { 873 mFrameTracker.setFrameReadyFence(frameReadyFence); 874 } else { 875 // There was no fence for this frame, so assume that it was ready 876 // to be presented at the desired present time. 877 mFrameTracker.setFrameReadyTime(desiredPresentTime); 878 } 879 880 const HWComposer& hwc = mFlinger->getHwComposer(); 881 sp<Fence> presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY); 882 if (presentFence->isValid()) { 883 mFrameTracker.setActualPresentFence(presentFence); 884 } else { 885 // The HWC doesn't support present fences, so use the refresh 886 // timestamp instead. 887 nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); 888 mFrameTracker.setActualPresentTime(presentTime); 889 } 890 891 mFrameTracker.advanceFrame(); 892 mFrameLatencyNeeded = false; 893 } 894} 895 896bool Layer::isVisible() const { 897 const Layer::State& s(mDrawingState); 898 return !(s.flags & layer_state_t::eLayerHidden) && s.alpha 899 && (mActiveBuffer != NULL); 900} 901 902Region Layer::latchBuffer(bool& recomputeVisibleRegions) 903{ 904 ATRACE_CALL(); 905 906 Region outDirtyRegion; 907 if (mQueuedFrames > 0) { 908 909 // if we've already called updateTexImage() without going through 910 // a composition step, we have to skip this layer at this point 911 // because we cannot call updateTeximage() without a corresponding 912 // compositionComplete() call. 913 // we'll trigger an update in onPreComposition(). 914 if (mRefreshPending) { 915 return outDirtyRegion; 916 } 917 918 // Capture the old state of the layer for comparisons later 919 const bool oldOpacity = isOpaque(); 920 sp<GraphicBuffer> oldActiveBuffer = mActiveBuffer; 921 922 struct Reject : public SurfaceFlingerConsumer::BufferRejecter { 923 Layer::State& front; 924 Layer::State& current; 925 bool& recomputeVisibleRegions; 926 Reject(Layer::State& front, Layer::State& current, 927 bool& recomputeVisibleRegions) 928 : front(front), current(current), 929 recomputeVisibleRegions(recomputeVisibleRegions) { 930 } 931 932 virtual bool reject(const sp<GraphicBuffer>& buf, 933 const IGraphicBufferConsumer::BufferItem& item) { 934 if (buf == NULL) { 935 return false; 936 } 937 938 uint32_t bufWidth = buf->getWidth(); 939 uint32_t bufHeight = buf->getHeight(); 940 941 // check that we received a buffer of the right size 942 // (Take the buffer's orientation into account) 943 if (item.mTransform & Transform::ROT_90) { 944 swap(bufWidth, bufHeight); 945 } 946 947 bool isFixedSize = item.mScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE; 948 if (front.active != front.requested) { 949 950 if (isFixedSize || 951 (bufWidth == front.requested.w && 952 bufHeight == front.requested.h)) 953 { 954 // Here we pretend the transaction happened by updating the 955 // current and drawing states. Drawing state is only accessed 956 // in this thread, no need to have it locked 957 front.active = front.requested; 958 959 // We also need to update the current state so that 960 // we don't end-up overwriting the drawing state with 961 // this stale current state during the next transaction 962 // 963 // NOTE: We don't need to hold the transaction lock here 964 // because State::active is only accessed from this thread. 965 current.active = front.active; 966 967 // recompute visible region 968 recomputeVisibleRegions = true; 969 } 970 971 ALOGD_IF(DEBUG_RESIZE, 972 "latchBuffer/reject: buffer (%ux%u, tr=%02x), scalingMode=%d\n" 973 " drawing={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" 974 " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n", 975 bufWidth, bufHeight, item.mTransform, item.mScalingMode, 976 front.active.w, front.active.h, 977 front.active.crop.left, 978 front.active.crop.top, 979 front.active.crop.right, 980 front.active.crop.bottom, 981 front.active.crop.getWidth(), 982 front.active.crop.getHeight(), 983 front.requested.w, front.requested.h, 984 front.requested.crop.left, 985 front.requested.crop.top, 986 front.requested.crop.right, 987 front.requested.crop.bottom, 988 front.requested.crop.getWidth(), 989 front.requested.crop.getHeight()); 990 } 991 992 if (!isFixedSize) { 993 if (front.active.w != bufWidth || 994 front.active.h != bufHeight) { 995 // reject this buffer 996 //ALOGD("rejecting buffer: bufWidth=%d, bufHeight=%d, front.active.{w=%d, h=%d}", 997 // bufWidth, bufHeight, front.active.w, front.active.h); 998 return true; 999 } 1000 } 1001 1002 // if the transparent region has changed (this test is 1003 // conservative, but that's fine, worst case we're doing 1004 // a bit of extra work), we latch the new one and we 1005 // trigger a visible-region recompute. 1006 if (!front.activeTransparentRegion.isTriviallyEqual( 1007 front.requestedTransparentRegion)) { 1008 front.activeTransparentRegion = front.requestedTransparentRegion; 1009 1010 // We also need to update the current state so that 1011 // we don't end-up overwriting the drawing state with 1012 // this stale current state during the next transaction 1013 // 1014 // NOTE: We don't need to hold the transaction lock here 1015 // because State::active is only accessed from this thread. 1016 current.activeTransparentRegion = front.activeTransparentRegion; 1017 1018 // recompute visible region 1019 recomputeVisibleRegions = true; 1020 } 1021 1022 return false; 1023 } 1024 }; 1025 1026 1027 Reject r(mDrawingState, getCurrentState(), recomputeVisibleRegions); 1028 1029 status_t updateResult = mSurfaceFlingerConsumer->updateTexImage(&r); 1030 if (updateResult == BufferQueue::PRESENT_LATER) { 1031 // Producer doesn't want buffer to be displayed yet. Signal a 1032 // layer update so we check again at the next opportunity. 1033 mFlinger->signalLayerUpdate(); 1034 return outDirtyRegion; 1035 } 1036 1037 // Decrement the queued-frames count. Signal another event if we 1038 // have more frames pending. 1039 if (android_atomic_dec(&mQueuedFrames) > 1) { 1040 mFlinger->signalLayerUpdate(); 1041 } 1042 1043 if (updateResult != NO_ERROR) { 1044 // something happened! 1045 recomputeVisibleRegions = true; 1046 return outDirtyRegion; 1047 } 1048 1049 // update the active buffer 1050 mActiveBuffer = mSurfaceFlingerConsumer->getCurrentBuffer(); 1051 if (mActiveBuffer == NULL) { 1052 // this can only happen if the very first buffer was rejected. 1053 return outDirtyRegion; 1054 } 1055 1056 mRefreshPending = true; 1057 mFrameLatencyNeeded = true; 1058 if (oldActiveBuffer == NULL) { 1059 // the first time we receive a buffer, we need to trigger a 1060 // geometry invalidation. 1061 recomputeVisibleRegions = true; 1062 } 1063 1064 Rect crop(mSurfaceFlingerConsumer->getCurrentCrop()); 1065 const uint32_t transform(mSurfaceFlingerConsumer->getCurrentTransform()); 1066 const uint32_t scalingMode(mSurfaceFlingerConsumer->getCurrentScalingMode()); 1067 if ((crop != mCurrentCrop) || 1068 (transform != mCurrentTransform) || 1069 (scalingMode != mCurrentScalingMode)) 1070 { 1071 mCurrentCrop = crop; 1072 mCurrentTransform = transform; 1073 mCurrentScalingMode = scalingMode; 1074 recomputeVisibleRegions = true; 1075 } 1076 1077 if (oldActiveBuffer != NULL) { 1078 uint32_t bufWidth = mActiveBuffer->getWidth(); 1079 uint32_t bufHeight = mActiveBuffer->getHeight(); 1080 if (bufWidth != uint32_t(oldActiveBuffer->width) || 1081 bufHeight != uint32_t(oldActiveBuffer->height)) { 1082 recomputeVisibleRegions = true; 1083 } 1084 } 1085 1086 mCurrentOpacity = getOpacityForFormat(mActiveBuffer->format); 1087 if (oldOpacity != isOpaque()) { 1088 recomputeVisibleRegions = true; 1089 } 1090 1091 // FIXME: postedRegion should be dirty & bounds 1092 const Layer::State& s(getDrawingState()); 1093 Region dirtyRegion(Rect(s.active.w, s.active.h)); 1094 1095 // transform the dirty region to window-manager space 1096 outDirtyRegion = (s.transform.transform(dirtyRegion)); 1097 } 1098 return outDirtyRegion; 1099} 1100 1101uint32_t Layer::getEffectiveUsage(uint32_t usage) const 1102{ 1103 // TODO: should we do something special if mSecure is set? 1104 if (mProtectedByApp) { 1105 // need a hardware-protected path to external video sink 1106 usage |= GraphicBuffer::USAGE_PROTECTED; 1107 } 1108 usage |= GraphicBuffer::USAGE_HW_COMPOSER; 1109 return usage; 1110} 1111 1112void Layer::updateTransformHint(const sp<const DisplayDevice>& hw) const { 1113 uint32_t orientation = 0; 1114 if (!mFlinger->mDebugDisableTransformHint) { 1115 // The transform hint is used to improve performance, but we can 1116 // only have a single transform hint, it cannot 1117 // apply to all displays. 1118 const Transform& planeTransform(hw->getTransform()); 1119 orientation = planeTransform.getOrientation(); 1120 if (orientation & Transform::ROT_INVALID) { 1121 orientation = 0; 1122 } 1123 } 1124 mSurfaceFlingerConsumer->setTransformHint(orientation); 1125} 1126 1127// ---------------------------------------------------------------------------- 1128// debugging 1129// ---------------------------------------------------------------------------- 1130 1131void Layer::dump(String8& result, Colorizer& colorizer) const 1132{ 1133 const Layer::State& s(getDrawingState()); 1134 1135 colorizer.colorize(result, Colorizer::GREEN); 1136 result.appendFormat( 1137 "+ %s %p (%s)\n", 1138 getTypeId(), this, getName().string()); 1139 colorizer.reset(result); 1140 1141 s.activeTransparentRegion.dump(result, "transparentRegion"); 1142 visibleRegion.dump(result, "visibleRegion"); 1143 sp<Client> client(mClientRef.promote()); 1144 1145 result.appendFormat( " " 1146 "layerStack=%4d, z=%9d, pos=(%g,%g), size=(%4d,%4d), crop=(%4d,%4d,%4d,%4d), " 1147 "isOpaque=%1d, invalidate=%1d, " 1148 "alpha=0x%02x, flags=0x%08x, tr=[%.2f, %.2f][%.2f, %.2f]\n" 1149 " client=%p\n", 1150 s.layerStack, s.z, s.transform.tx(), s.transform.ty(), s.active.w, s.active.h, 1151 s.active.crop.left, s.active.crop.top, 1152 s.active.crop.right, s.active.crop.bottom, 1153 isOpaque(), contentDirty, 1154 s.alpha, s.flags, 1155 s.transform[0][0], s.transform[0][1], 1156 s.transform[1][0], s.transform[1][1], 1157 client.get()); 1158 1159 sp<const GraphicBuffer> buf0(mActiveBuffer); 1160 uint32_t w0=0, h0=0, s0=0, f0=0; 1161 if (buf0 != 0) { 1162 w0 = buf0->getWidth(); 1163 h0 = buf0->getHeight(); 1164 s0 = buf0->getStride(); 1165 f0 = buf0->format; 1166 } 1167 result.appendFormat( 1168 " " 1169 "format=%2d, activeBuffer=[%4ux%4u:%4u,%3X]," 1170 " queued-frames=%d, mRefreshPending=%d\n", 1171 mFormat, w0, h0, s0,f0, 1172 mQueuedFrames, mRefreshPending); 1173 1174 if (mSurfaceFlingerConsumer != 0) { 1175 mSurfaceFlingerConsumer->dump(result, " "); 1176 } 1177} 1178 1179void Layer::dumpStats(String8& result) const { 1180 mFrameTracker.dump(result); 1181} 1182 1183void Layer::clearStats() { 1184 mFrameTracker.clear(); 1185} 1186 1187void Layer::logFrameStats() { 1188 mFrameTracker.logAndResetStats(mName); 1189} 1190 1191// --------------------------------------------------------------------------- 1192 1193Layer::LayerCleaner::LayerCleaner(const sp<SurfaceFlinger>& flinger, 1194 const sp<Layer>& layer) 1195 : mFlinger(flinger), mLayer(layer) { 1196} 1197 1198Layer::LayerCleaner::~LayerCleaner() { 1199 // destroy client resources 1200 mFlinger->onLayerDestroyed(mLayer); 1201} 1202 1203// --------------------------------------------------------------------------- 1204}; // namespace android 1205 1206#if defined(__gl_h_) 1207#error "don't include gl/gl.h in this file" 1208#endif 1209 1210#if defined(__gl2_h_) 1211#error "don't include gl2/gl2.h in this file" 1212#endif 1213