Layer.cpp revision cbad735d8cc4ff360341bf12d8c388edcbc78ce3
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 "DisplayHardware/DisplayHardware.h" 40#include "DisplayHardware/HWComposer.h" 41#include "GLExtensions.h" 42#include "Layer.h" 43#include "SurfaceFlinger.h" 44#include "SurfaceTextureLayer.h" 45 46#define DEBUG_RESIZE 0 47 48namespace android { 49 50// --------------------------------------------------------------------------- 51 52Layer::Layer(SurfaceFlinger* flinger, 53 DisplayID display, const sp<Client>& client) 54 : LayerBaseClient(flinger, display, client), 55 mTextureName(-1U), 56 mQueuedFrames(0), 57 mCurrentTransform(0), 58 mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE), 59 mCurrentOpacity(true), 60 mRefreshPending(false), 61 mFrameLatencyNeeded(false), 62 mFrameLatencyOffset(0), 63 mFormat(PIXEL_FORMAT_NONE), 64 mGLExtensions(GLExtensions::getInstance()), 65 mOpaqueLayer(true), 66 mNeedsDithering(false), 67 mSecure(false), 68 mProtectedByApp(false) 69{ 70 mCurrentCrop.makeInvalid(); 71 glGenTextures(1, &mTextureName); 72} 73 74void Layer::onLayerDisplayed() { 75 if (mFrameLatencyNeeded) { 76 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 77 mFrameStats[mFrameLatencyOffset].timestamp = mSurfaceTexture->getTimestamp(); 78 mFrameStats[mFrameLatencyOffset].set = systemTime(); 79 mFrameStats[mFrameLatencyOffset].vsync = hw.getRefreshTimestamp(); 80 mFrameLatencyOffset = (mFrameLatencyOffset + 1) % 128; 81 mFrameLatencyNeeded = false; 82 } 83} 84 85void Layer::onFirstRef() 86{ 87 LayerBaseClient::onFirstRef(); 88 89 struct FrameQueuedListener : public SurfaceTexture::FrameAvailableListener { 90 FrameQueuedListener(Layer* layer) : mLayer(layer) { } 91 private: 92 wp<Layer> mLayer; 93 virtual void onFrameAvailable() { 94 sp<Layer> that(mLayer.promote()); 95 if (that != 0) { 96 that->onFrameQueued(); 97 } 98 } 99 }; 100 101 // Creates a custom BufferQueue for SurfaceTexture to use 102 sp<BufferQueue> bq = new SurfaceTextureLayer(); 103 mSurfaceTexture = new SurfaceTexture(mTextureName, true, 104 GL_TEXTURE_EXTERNAL_OES, false, bq); 105 106 mSurfaceTexture->setConsumerUsageBits(getEffectiveUsage(0)); 107 mSurfaceTexture->setFrameAvailableListener(new FrameQueuedListener(this)); 108 mSurfaceTexture->setSynchronousMode(true); 109 110#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 111#warning "disabling triple buffering" 112 mSurfaceTexture->setBufferCountServer(2); 113#else 114 mSurfaceTexture->setBufferCountServer(3); 115#endif 116} 117 118Layer::~Layer() 119{ 120 mFlinger->postMessageAsync( 121 new SurfaceFlinger::MessageDestroyGLTexture(mTextureName) ); 122} 123 124void Layer::onFrameQueued() { 125 android_atomic_inc(&mQueuedFrames); 126 mFlinger->signalLayerUpdate(); 127} 128 129// called with SurfaceFlinger::mStateLock as soon as the layer is entered 130// in the purgatory list 131void Layer::onRemoved() 132{ 133 mSurfaceTexture->abandon(); 134} 135 136void Layer::setName(const String8& name) { 137 LayerBase::setName(name); 138 mSurfaceTexture->setName(name); 139} 140 141void Layer::validateVisibility(const Transform& globalTransform) { 142 LayerBase::validateVisibility(globalTransform); 143 144 // This optimization allows the SurfaceTexture to bake in 145 // the rotation so hardware overlays can be used 146 mSurfaceTexture->setTransformHint(getTransformHint()); 147} 148 149sp<ISurface> Layer::createSurface() 150{ 151 class BSurface : public BnSurface, public LayerCleaner { 152 wp<const Layer> mOwner; 153 virtual sp<ISurfaceTexture> getSurfaceTexture() const { 154 sp<ISurfaceTexture> res; 155 sp<const Layer> that( mOwner.promote() ); 156 if (that != NULL) { 157 res = that->mSurfaceTexture->getBufferQueue(); 158 } 159 return res; 160 } 161 public: 162 BSurface(const sp<SurfaceFlinger>& flinger, 163 const sp<Layer>& layer) 164 : LayerCleaner(flinger, layer), mOwner(layer) { } 165 }; 166 sp<ISurface> sur(new BSurface(mFlinger, this)); 167 return sur; 168} 169 170wp<IBinder> Layer::getSurfaceTextureBinder() const 171{ 172 return mSurfaceTexture->getBufferQueue()->asBinder(); 173} 174 175status_t Layer::setBuffers( uint32_t w, uint32_t h, 176 PixelFormat format, uint32_t flags) 177{ 178 // this surfaces pixel format 179 PixelFormatInfo info; 180 status_t err = getPixelFormatInfo(format, &info); 181 if (err) { 182 ALOGE("unsupported pixelformat %d", format); 183 return err; 184 } 185 186 // the display's pixel format 187 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 188 uint32_t const maxSurfaceDims = min( 189 hw.getMaxTextureSize(), hw.getMaxViewportDims()); 190 191 // never allow a surface larger than what our underlying GL implementation 192 // can handle. 193 if ((uint32_t(w)>maxSurfaceDims) || (uint32_t(h)>maxSurfaceDims)) { 194 ALOGE("dimensions too large %u x %u", uint32_t(w), uint32_t(h)); 195 return BAD_VALUE; 196 } 197 198 PixelFormatInfo displayInfo; 199 getPixelFormatInfo(hw.getFormat(), &displayInfo); 200 const uint32_t hwFlags = hw.getFlags(); 201 202 mFormat = format; 203 204 mSecure = (flags & ISurfaceComposer::eSecure) ? true : false; 205 mProtectedByApp = (flags & ISurfaceComposer::eProtectedByApp) ? true : false; 206 mOpaqueLayer = (flags & ISurfaceComposer::eOpaque); 207 mCurrentOpacity = getOpacityForFormat(format); 208 209 mSurfaceTexture->setDefaultBufferSize(w, h); 210 mSurfaceTexture->setDefaultBufferFormat(format); 211 mSurfaceTexture->setConsumerUsageBits(getEffectiveUsage(0)); 212 213 // we use the red index 214 int displayRedSize = displayInfo.getSize(PixelFormatInfo::INDEX_RED); 215 int layerRedsize = info.getSize(PixelFormatInfo::INDEX_RED); 216 mNeedsDithering = layerRedsize > displayRedSize; 217 218 return NO_ERROR; 219} 220 221Rect Layer::computeBufferCrop() const { 222 // Start with the SurfaceTexture's buffer crop... 223 Rect crop; 224 if (!mCurrentCrop.isEmpty()) { 225 crop = mCurrentCrop; 226 } else if (mActiveBuffer != NULL){ 227 crop = Rect(mActiveBuffer->getWidth(), mActiveBuffer->getHeight()); 228 } else { 229 crop = Rect(mTransformedBounds.width(), mTransformedBounds.height()); 230 } 231 232 // ... then reduce that in the same proportions as the window crop reduces 233 // the window size. 234 const State& s(drawingState()); 235 if (!s.crop.isEmpty()) { 236 // Transform the window crop to match the buffer coordinate system, 237 // which means using the inverse of the current transform set on the 238 // SurfaceTexture. 239 uint32_t invTransform = mCurrentTransform; 240 int winWidth = s.w; 241 int winHeight = s.h; 242 if (invTransform & NATIVE_WINDOW_TRANSFORM_ROT_90) { 243 invTransform ^= NATIVE_WINDOW_TRANSFORM_FLIP_V | 244 NATIVE_WINDOW_TRANSFORM_FLIP_H; 245 winWidth = s.h; 246 winHeight = s.w; 247 } 248 Rect winCrop = s.crop.transform(invTransform, s.w, s.h); 249 250 float xScale = float(crop.width()) / float(winWidth); 251 float yScale = float(crop.height()) / float(winHeight); 252 crop.left += int(ceil(float(winCrop.left) * xScale)); 253 crop.top += int(ceil(float(winCrop.top) * yScale)); 254 crop.right -= int(ceil(float(winWidth - winCrop.right) * xScale)); 255 crop.bottom -= int(ceil(float(winHeight - winCrop.bottom) * yScale)); 256 } 257 258 return crop; 259} 260 261void Layer::setGeometry(hwc_layer_t* hwcl) 262{ 263 LayerBaseClient::setGeometry(hwcl); 264 265 hwcl->flags &= ~HWC_SKIP_LAYER; 266 267 // we can't do alpha-fade with the hwc HAL 268 const State& s(drawingState()); 269 if (s.alpha < 0xFF) { 270 hwcl->flags = HWC_SKIP_LAYER; 271 } 272 273 /* 274 * Transformations are applied in this order: 275 * 1) buffer orientation/flip/mirror 276 * 2) state transformation (window manager) 277 * 3) layer orientation (screen orientation) 278 * mTransform is already the composition of (2) and (3) 279 * (NOTE: the matrices are multiplied in reverse order) 280 */ 281 282 const Transform bufferOrientation(mCurrentTransform); 283 const Transform tr(mTransform * bufferOrientation); 284 285 // this gives us only the "orientation" component of the transform 286 const uint32_t finalTransform = tr.getOrientation(); 287 288 // we can only handle simple transformation 289 if (finalTransform & Transform::ROT_INVALID) { 290 hwcl->flags = HWC_SKIP_LAYER; 291 } else { 292 hwcl->transform = finalTransform; 293 } 294 295 Rect crop = computeBufferCrop(); 296 hwcl->sourceCrop.left = crop.left; 297 hwcl->sourceCrop.top = crop.top; 298 hwcl->sourceCrop.right = crop.right; 299 hwcl->sourceCrop.bottom = crop.bottom; 300} 301 302void Layer::setPerFrameData(hwc_layer_t* hwcl) { 303 const sp<GraphicBuffer>& buffer(mActiveBuffer); 304 if (buffer == NULL) { 305 // this can happen if the client never drew into this layer yet, 306 // or if we ran out of memory. In that case, don't let 307 // HWC handle it. 308 hwcl->flags |= HWC_SKIP_LAYER; 309 hwcl->handle = NULL; 310 } else { 311 hwcl->handle = buffer->handle; 312 } 313} 314 315void Layer::onDraw(const Region& clip) const 316{ 317 ATRACE_CALL(); 318 319 if (CC_UNLIKELY(mActiveBuffer == 0)) { 320 // the texture has not been created yet, this Layer has 321 // in fact never been drawn into. This happens frequently with 322 // SurfaceView because the WindowManager can't know when the client 323 // has drawn the first time. 324 325 // If there is nothing under us, we paint the screen in black, otherwise 326 // we just skip this update. 327 328 // figure out if there is something below us 329 Region under; 330 const SurfaceFlinger::LayerVector& drawingLayers( 331 mFlinger->mDrawingState.layersSortedByZ); 332 const size_t count = drawingLayers.size(); 333 for (size_t i=0 ; i<count ; ++i) { 334 const sp<LayerBase>& layer(drawingLayers[i]); 335 if (layer.get() == static_cast<LayerBase const*>(this)) 336 break; 337 under.orSelf(layer->visibleRegionScreen); 338 } 339 // if not everything below us is covered, we plug the holes! 340 Region holes(clip.subtract(under)); 341 if (!holes.isEmpty()) { 342 clearWithOpenGL(holes, 0, 0, 0, 1); 343 } 344 return; 345 } 346 347 if (!isProtected()) { 348 // TODO: we could be more subtle with isFixedSize() 349 const bool useFiltering = getFiltering() || needsFiltering() || isFixedSize(); 350 351 // Query the texture matrix given our current filtering mode. 352 float textureMatrix[16]; 353 mSurfaceTexture->setFilteringEnabled(useFiltering); 354 mSurfaceTexture->getTransformMatrix(textureMatrix); 355 356 // Set things up for texturing. 357 glBindTexture(GL_TEXTURE_EXTERNAL_OES, mTextureName); 358 GLenum filter = GL_NEAREST; 359 if (useFiltering) { 360 filter = GL_LINEAR; 361 } 362 glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, filter); 363 glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, filter); 364 glMatrixMode(GL_TEXTURE); 365 glLoadMatrixf(textureMatrix); 366 glMatrixMode(GL_MODELVIEW); 367 glDisable(GL_TEXTURE_2D); 368 glEnable(GL_TEXTURE_EXTERNAL_OES); 369 } else { 370 glBindTexture(GL_TEXTURE_2D, mFlinger->getProtectedTexName()); 371 glMatrixMode(GL_TEXTURE); 372 glLoadIdentity(); 373 glMatrixMode(GL_MODELVIEW); 374 glDisable(GL_TEXTURE_EXTERNAL_OES); 375 glEnable(GL_TEXTURE_2D); 376 } 377 378 drawWithOpenGL(clip); 379 380 glDisable(GL_TEXTURE_EXTERNAL_OES); 381 glDisable(GL_TEXTURE_2D); 382} 383 384// As documented in libhardware header, formats in the range 385// 0x100 - 0x1FF are specific to the HAL implementation, and 386// are known to have no alpha channel 387// TODO: move definition for device-specific range into 388// hardware.h, instead of using hard-coded values here. 389#define HARDWARE_IS_DEVICE_FORMAT(f) ((f) >= 0x100 && (f) <= 0x1FF) 390 391bool Layer::getOpacityForFormat(uint32_t format) 392{ 393 if (HARDWARE_IS_DEVICE_FORMAT(format)) { 394 return true; 395 } 396 PixelFormatInfo info; 397 status_t err = getPixelFormatInfo(PixelFormat(format), &info); 398 // in case of error (unknown format), we assume no blending 399 return (err || info.h_alpha <= info.l_alpha); 400} 401 402 403bool Layer::isOpaque() const 404{ 405 // if we don't have a buffer yet, we're translucent regardless of the 406 // layer's opaque flag. 407 if (mActiveBuffer == 0) { 408 return false; 409 } 410 411 // if the layer has the opaque flag, then we're always opaque, 412 // otherwise we use the current buffer's format. 413 return mOpaqueLayer || mCurrentOpacity; 414} 415 416bool Layer::isProtected() const 417{ 418 const sp<GraphicBuffer>& activeBuffer(mActiveBuffer); 419 return (activeBuffer != 0) && 420 (activeBuffer->getUsage() & GRALLOC_USAGE_PROTECTED); 421} 422 423uint32_t Layer::doTransaction(uint32_t flags) 424{ 425 ATRACE_CALL(); 426 427 const Layer::State& front(drawingState()); 428 const Layer::State& temp(currentState()); 429 430 const bool sizeChanged = (front.requested_w != temp.requested_w) || 431 (front.requested_h != temp.requested_h); 432 433 if (sizeChanged) { 434 // the size changed, we need to ask our client to request a new buffer 435 ALOGD_IF(DEBUG_RESIZE, 436 "doTransaction: " 437 "resize (layer=%p), requested (%dx%d), drawing (%d,%d), " 438 "scalingMode=%d", 439 this, 440 int(temp.requested_w), int(temp.requested_h), 441 int(front.requested_w), int(front.requested_h), 442 mCurrentScalingMode); 443 444 if (!isFixedSize()) { 445 // this will make sure LayerBase::doTransaction doesn't update 446 // the drawing state's size 447 Layer::State& editDraw(mDrawingState); 448 editDraw.requested_w = temp.requested_w; 449 editDraw.requested_h = temp.requested_h; 450 } 451 452 // record the new size, form this point on, when the client request 453 // a buffer, it'll get the new size. 454 mSurfaceTexture->setDefaultBufferSize(temp.requested_w, 455 temp.requested_h); 456 } 457 458 return LayerBase::doTransaction(flags); 459} 460 461bool Layer::isFixedSize() const { 462 return mCurrentScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE; 463} 464 465bool Layer::isCropped() const { 466 return !mCurrentCrop.isEmpty(); 467} 468 469// ---------------------------------------------------------------------------- 470// pageflip handling... 471// ---------------------------------------------------------------------------- 472 473bool Layer::onPreComposition() { 474 mRefreshPending = false; 475 return mQueuedFrames > 0; 476} 477 478void Layer::lockPageFlip(bool& recomputeVisibleRegions) 479{ 480 ATRACE_CALL(); 481 482 if (mQueuedFrames > 0) { 483 484 // if we've already called updateTexImage() without going through 485 // a composition step, we have to skip this layer at this point 486 // because we cannot call updateTeximage() without a corresponding 487 // compositionComplete() call. 488 // we'll trigger an update in onPreComposition(). 489 if (mRefreshPending) { 490 mPostedDirtyRegion.clear(); 491 return; 492 } 493 mRefreshPending = true; 494 495 // Capture the old state of the layer for comparisons later 496 const bool oldOpacity = isOpaque(); 497 sp<GraphicBuffer> oldActiveBuffer = mActiveBuffer; 498 499 // signal another event if we have more frames pending 500 if (android_atomic_dec(&mQueuedFrames) > 1) { 501 mFlinger->signalLayerUpdate(); 502 } 503 504 if (mSurfaceTexture->updateTexImage() < NO_ERROR) { 505 // something happened! 506 recomputeVisibleRegions = true; 507 return; 508 } 509 510 // update the active buffer 511 mActiveBuffer = mSurfaceTexture->getCurrentBuffer(); 512 mFrameLatencyNeeded = true; 513 514 if (oldActiveBuffer == NULL && mActiveBuffer != NULL) { 515 // the first time we receive a buffer, we need to trigger a 516 // geometry invalidation. 517 mFlinger->invalidateHwcGeometry(); 518 } 519 520 Rect crop(mSurfaceTexture->getCurrentCrop()); 521 const uint32_t transform(mSurfaceTexture->getCurrentTransform()); 522 const uint32_t scalingMode(mSurfaceTexture->getCurrentScalingMode()); 523 if ((crop != mCurrentCrop) || 524 (transform != mCurrentTransform) || 525 (scalingMode != mCurrentScalingMode)) 526 { 527 mCurrentCrop = crop; 528 mCurrentTransform = transform; 529 mCurrentScalingMode = scalingMode; 530 mFlinger->invalidateHwcGeometry(); 531 } 532 533 uint32_t bufWidth = mActiveBuffer->getWidth(); 534 uint32_t bufHeight = mActiveBuffer->getHeight(); 535 if (oldActiveBuffer != NULL) { 536 if (bufWidth != uint32_t(oldActiveBuffer->width) || 537 bufHeight != uint32_t(oldActiveBuffer->height)) { 538 mFlinger->invalidateHwcGeometry(); 539 } 540 } 541 542 mCurrentOpacity = getOpacityForFormat(mActiveBuffer->format); 543 if (oldOpacity != isOpaque()) { 544 recomputeVisibleRegions = true; 545 } 546 547 glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 548 glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 549 550 // update the layer size if needed 551 const Layer::State& front(drawingState()); 552 553 // FIXME: mPostedDirtyRegion = dirty & bounds 554 mPostedDirtyRegion.set(front.w, front.h); 555 556 if ((front.w != front.requested_w) || 557 (front.h != front.requested_h)) 558 { 559 // check that we received a buffer of the right size 560 // (Take the buffer's orientation into account) 561 if (mCurrentTransform & Transform::ROT_90) { 562 swap(bufWidth, bufHeight); 563 } 564 565 if (isFixedSize() || 566 (bufWidth == front.requested_w && 567 bufHeight == front.requested_h)) 568 { 569 // Here we pretend the transaction happened by updating the 570 // current and drawing states. Drawing state is only accessed 571 // in this thread, no need to have it locked 572 Layer::State& editDraw(mDrawingState); 573 editDraw.w = editDraw.requested_w; 574 editDraw.h = editDraw.requested_h; 575 576 // We also need to update the current state so that we don't 577 // end-up doing too much work during the next transaction. 578 // NOTE: We actually don't need hold the transaction lock here 579 // because State::w and State::h are only accessed from 580 // this thread 581 Layer::State& editTemp(currentState()); 582 editTemp.w = editDraw.w; 583 editTemp.h = editDraw.h; 584 585 // recompute visible region 586 recomputeVisibleRegions = true; 587 } 588 589 ALOGD_IF(DEBUG_RESIZE, 590 "lockPageFlip : " 591 " (layer=%p), buffer (%ux%u, tr=%02x), " 592 "requested (%dx%d)", 593 this, 594 bufWidth, bufHeight, mCurrentTransform, 595 front.requested_w, front.requested_h); 596 } 597 } 598} 599 600void Layer::unlockPageFlip( 601 const Transform& planeTransform, Region& outDirtyRegion) 602{ 603 ATRACE_CALL(); 604 605 Region postedRegion(mPostedDirtyRegion); 606 if (!postedRegion.isEmpty()) { 607 mPostedDirtyRegion.clear(); 608 if (!visibleRegionScreen.isEmpty()) { 609 // The dirty region is given in the layer's coordinate space 610 // transform the dirty region by the surface's transformation 611 // and the global transformation. 612 const Layer::State& s(drawingState()); 613 const Transform tr(planeTransform * s.transform); 614 postedRegion = tr.transform(postedRegion); 615 616 // At this point, the dirty region is in screen space. 617 // Make sure it's constrained by the visible region (which 618 // is in screen space as well). 619 postedRegion.andSelf(visibleRegionScreen); 620 outDirtyRegion.orSelf(postedRegion); 621 } 622 } 623} 624 625void Layer::dump(String8& result, char* buffer, size_t SIZE) const 626{ 627 LayerBaseClient::dump(result, buffer, SIZE); 628 629 sp<const GraphicBuffer> buf0(mActiveBuffer); 630 uint32_t w0=0, h0=0, s0=0, f0=0; 631 if (buf0 != 0) { 632 w0 = buf0->getWidth(); 633 h0 = buf0->getHeight(); 634 s0 = buf0->getStride(); 635 f0 = buf0->format; 636 } 637 snprintf(buffer, SIZE, 638 " " 639 "format=%2d, activeBuffer=[%4ux%4u:%4u,%3X]," 640 " transform-hint=0x%02x, queued-frames=%d, mRefreshPending=%d\n", 641 mFormat, w0, h0, s0,f0, 642 getTransformHint(), mQueuedFrames, mRefreshPending); 643 644 result.append(buffer); 645 646 if (mSurfaceTexture != 0) { 647 mSurfaceTexture->dump(result, " ", buffer, SIZE); 648 } 649} 650 651void Layer::dumpStats(String8& result, char* buffer, size_t SIZE) const 652{ 653 LayerBaseClient::dumpStats(result, buffer, SIZE); 654 const size_t o = mFrameLatencyOffset; 655 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 656 const nsecs_t period = hw.getRefreshPeriod(); 657 result.appendFormat("%lld\n", period); 658 for (size_t i=0 ; i<128 ; i++) { 659 const size_t index = (o+i) % 128; 660 const nsecs_t time_app = mFrameStats[index].timestamp; 661 const nsecs_t time_set = mFrameStats[index].set; 662 const nsecs_t time_vsync = mFrameStats[index].vsync; 663 result.appendFormat("%lld\t%lld\t%lld\n", 664 time_app, 665 time_vsync, 666 time_set); 667 } 668 result.append("\n"); 669} 670 671void Layer::clearStats() 672{ 673 LayerBaseClient::clearStats(); 674 memset(mFrameStats, 0, sizeof(mFrameStats)); 675} 676 677uint32_t Layer::getEffectiveUsage(uint32_t usage) const 678{ 679 // TODO: should we do something special if mSecure is set? 680 if (mProtectedByApp) { 681 // need a hardware-protected path to external video sink 682 usage |= GraphicBuffer::USAGE_PROTECTED; 683 } 684 usage |= GraphicBuffer::USAGE_HW_COMPOSER; 685 return usage; 686} 687 688uint32_t Layer::getTransformHint() const { 689 uint32_t orientation = 0; 690 if (!mFlinger->mDebugDisableTransformHint) { 691 orientation = getPlaneOrientation(); 692 if (orientation & Transform::ROT_INVALID) { 693 orientation = 0; 694 } 695 } 696 return orientation; 697} 698 699// --------------------------------------------------------------------------- 700 701 702}; // namespace android 703