HWComposer.cpp revision c39736088398a9b4367b30fc307ed7de96ac342e
1/* 2 * Copyright (C) 2010 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// Uncomment this to remove support for HWC_DEVICE_API_VERSION_0_3 and older 20#define HWC_REMOVE_DEPRECATED_VERSIONS 1 21 22#include <stdint.h> 23#include <stdio.h> 24#include <stdlib.h> 25#include <string.h> 26#include <sys/types.h> 27 28#include <utils/Errors.h> 29#include <utils/String8.h> 30#include <utils/Thread.h> 31#include <utils/Trace.h> 32#include <utils/Vector.h> 33 34#include <ui/GraphicBuffer.h> 35 36#include <hardware/hardware.h> 37#include <hardware/hwcomposer.h> 38 39#include <cutils/log.h> 40#include <cutils/properties.h> 41 42#include "Layer.h" // needed only for debugging 43#include "LayerBase.h" 44#include "HWComposer.h" 45#include "SurfaceFlinger.h" 46 47namespace android { 48 49#define MIN_HWC_HEADER_VERSION 0 50 51static uint32_t hwcApiVersion(const hwc_composer_device_1_t* hwc) { 52 uint32_t hwcVersion = hwc->common.version; 53 if (MIN_HWC_HEADER_VERSION == 0 && 54 (hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK) == 0) { 55 // legacy version encoding 56 hwcVersion <<= 16; 57 } 58 return hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK; 59} 60 61static uint32_t hwcHeaderVersion(const hwc_composer_device_1_t* hwc) { 62 uint32_t hwcVersion = hwc->common.version; 63 if (MIN_HWC_HEADER_VERSION == 0 && 64 (hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK) == 0) { 65 // legacy version encoding 66 hwcVersion <<= 16; 67 } 68 return hwcVersion & HARDWARE_API_VERSION_2_HEADER_MASK; 69} 70 71static bool hwcHasApiVersion(const hwc_composer_device_1_t* hwc, 72 uint32_t version) { 73 return hwcApiVersion(hwc) >= (version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK); 74} 75 76// --------------------------------------------------------------------------- 77 78struct HWComposer::cb_context { 79 struct callbacks : public hwc_procs_t { 80 // these are here to facilitate the transition when adding 81 // new callbacks (an implementation can check for NULL before 82 // calling a new callback). 83 void (*zero[4])(void); 84 }; 85 callbacks procs; 86 HWComposer* hwc; 87}; 88 89// --------------------------------------------------------------------------- 90 91HWComposer::HWComposer( 92 const sp<SurfaceFlinger>& flinger, 93 EventHandler& handler, 94 framebuffer_device_t const* fbDev) 95 : mFlinger(flinger), 96 mModule(0), mHwc(0), mNumDisplays(1), 97 mCBContext(new cb_context), 98 mEventHandler(handler), 99 mVSyncCount(0), mDebugForceFakeVSync(false) 100{ 101 for (size_t i =0 ; i<MAX_DISPLAYS ; i++) { 102 mLists[i] = 0; 103 } 104 105 char value[PROPERTY_VALUE_MAX]; 106 property_get("debug.sf.no_hw_vsync", value, "0"); 107 mDebugForceFakeVSync = atoi(value); 108 109 bool needVSyncThread = true; 110 int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule); 111 ALOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID); 112 if (err == 0) { 113 err = hwc_open_1(mModule, &mHwc); 114 ALOGE_IF(err, "%s device failed to initialize (%s)", 115 HWC_HARDWARE_COMPOSER, strerror(-err)); 116 if (err == 0) { 117 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_0) || 118 hwcHeaderVersion(mHwc) < MIN_HWC_HEADER_VERSION || 119 hwcHeaderVersion(mHwc) > HWC_HEADER_VERSION) { 120 ALOGE("%s device version %#x unsupported, will not be used", 121 HWC_HARDWARE_COMPOSER, mHwc->common.version); 122 hwc_close_1(mHwc); 123 mHwc = NULL; 124 } 125 } 126 127 if (mHwc) { 128 ALOGI("Using %s version %u.%u", HWC_HARDWARE_COMPOSER, 129 (hwcApiVersion(mHwc) >> 24) & 0xff, 130 (hwcApiVersion(mHwc) >> 16) & 0xff); 131 if (mHwc->registerProcs) { 132 mCBContext->hwc = this; 133 mCBContext->procs.invalidate = &hook_invalidate; 134 mCBContext->procs.vsync = &hook_vsync; 135 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 136 mCBContext->procs.hotplug = &hook_hotplug; 137 else 138 mCBContext->procs.hotplug = NULL; 139 memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero)); 140 mHwc->registerProcs(mHwc, &mCBContext->procs); 141 } 142 143 // always turn vsync off when we start 144 needVSyncThread = false; 145 mHwc->eventControl(mHwc, HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); 146 147 // these IDs are always reserved 148 for (size_t i=0 ; i<HWC_NUM_DISPLAY_TYPES ; i++) { 149 mAllocatedDisplayIDs.markBit(i); 150 } 151 152 // the number of displays we actually have depends on the 153 // hw composer version 154 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) { 155 // 1.2 adds support for virtual displays 156 mNumDisplays = MAX_DISPLAYS; 157 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 158 // 1.1 adds support for multiple displays 159 mNumDisplays = HWC_NUM_DISPLAY_TYPES; 160 } else { 161 mNumDisplays = 1; 162 } 163 } 164 } 165 166 if (fbDev) { 167 ALOG_ASSERT(!(mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)), 168 "should only have fbdev if no hwc or hwc is 1.0"); 169 170 DisplayData& disp(mDisplayData[HWC_DISPLAY_PRIMARY]); 171 disp.xdpi = fbDev->xdpi; 172 disp.ydpi = fbDev->ydpi; 173 if (disp.refresh == 0) { 174 disp.refresh = nsecs_t(1e9 / fbDev->fps); 175 ALOGW("getting VSYNC period from fb HAL: %lld", disp.refresh); 176 } 177 if (disp.refresh == 0) { 178 disp.refresh = nsecs_t(1e9 / 60.0); 179 ALOGW("getting VSYNC period from thin air: %lld", 180 mDisplayData[HWC_DISPLAY_PRIMARY].refresh); 181 } 182 } else if (mHwc) { 183 queryDisplayProperties(HWC_DISPLAY_PRIMARY); 184 } 185 186 if (needVSyncThread) { 187 // we don't have VSYNC support, we need to fake it 188 mVSyncThread = new VSyncThread(*this); 189 } 190} 191 192HWComposer::~HWComposer() { 193 mHwc->eventControl(mHwc, 0, EVENT_VSYNC, 0); 194 if (mVSyncThread != NULL) { 195 mVSyncThread->requestExitAndWait(); 196 } 197 if (mHwc) { 198 hwc_close_1(mHwc); 199 } 200 delete mCBContext; 201} 202 203status_t HWComposer::initCheck() const { 204 return mHwc ? NO_ERROR : NO_INIT; 205} 206 207void HWComposer::hook_invalidate(const struct hwc_procs* procs) { 208 cb_context* ctx = reinterpret_cast<cb_context*>( 209 const_cast<hwc_procs_t*>(procs)); 210 ctx->hwc->invalidate(); 211} 212 213void HWComposer::hook_vsync(const struct hwc_procs* procs, int disp, 214 int64_t timestamp) { 215 cb_context* ctx = reinterpret_cast<cb_context*>( 216 const_cast<hwc_procs_t*>(procs)); 217 ctx->hwc->vsync(disp, timestamp); 218} 219 220void HWComposer::hook_hotplug(const struct hwc_procs* procs, int disp, 221 int connected) { 222 cb_context* ctx = reinterpret_cast<cb_context*>( 223 const_cast<hwc_procs_t*>(procs)); 224 ctx->hwc->hotplug(disp, connected); 225} 226 227void HWComposer::invalidate() { 228 mFlinger->repaintEverything(); 229} 230 231void HWComposer::vsync(int disp, int64_t timestamp) { 232 ATRACE_INT("VSYNC", ++mVSyncCount&1); 233 mEventHandler.onVSyncReceived(disp, timestamp); 234 Mutex::Autolock _l(mLock); 235 mLastHwVSync = timestamp; 236} 237 238void HWComposer::hotplug(int disp, int connected) { 239 if (disp == HWC_DISPLAY_PRIMARY || disp >= HWC_NUM_DISPLAY_TYPES) { 240 ALOGE("hotplug event received for invalid display: disp=%d connected=%d", 241 disp, connected); 242 return; 243 } 244 245 if (connected) 246 queryDisplayProperties(disp); 247 248 // TODO: tell someone else about this 249} 250 251static const uint32_t DISPLAY_ATTRIBUTES[] = { 252 HWC_DISPLAY_VSYNC_PERIOD, 253 HWC_DISPLAY_RESOLUTION_X, 254 HWC_DISPLAY_RESOLUTION_Y, 255 HWC_DISPLAY_DPI_X, 256 HWC_DISPLAY_DPI_Y, 257 HWC_DISPLAY_NO_ATTRIBUTE, 258}; 259#define NUM_DISPLAY_ATTRIBUTES (sizeof(DISPLAY_ATTRIBUTES) / sizeof(DISPLAY_ATTRIBUTES)[0]) 260 261// http://developer.android.com/reference/android/util/DisplayMetrics.html 262#define ANDROID_DENSITY_TV 213 263#define ANDROID_DENSITY_XHIGH 320 264 265void HWComposer::queryDisplayProperties(int disp) { 266 ALOG_ASSERT(mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); 267 268 int32_t values[NUM_DISPLAY_ATTRIBUTES - 1]; 269 memset(values, 0, sizeof(values)); 270 271 uint32_t config; 272 size_t numConfigs = 1; 273 status_t err = mHwc->getDisplayConfigs(mHwc, disp, &config, &numConfigs); 274 if (err == NO_ERROR) { 275 mHwc->getDisplayAttributes(mHwc, disp, config, DISPLAY_ATTRIBUTES, 276 values); 277 } 278 279 int32_t w = 0, h = 0; 280 for (size_t i = 0; i < NUM_DISPLAY_ATTRIBUTES - 1; i++) { 281 switch (DISPLAY_ATTRIBUTES[i]) { 282 case HWC_DISPLAY_VSYNC_PERIOD: 283 mDisplayData[disp].refresh = nsecs_t(values[i]); 284 break; 285 case HWC_DISPLAY_RESOLUTION_X: 286 // TODO: we'll probably want to remember this eventually 287 w = values[i]; 288 break; 289 case HWC_DISPLAY_RESOLUTION_Y: 290 // TODO: we'll probably want to remember this eventually 291 h = values[i]; 292 break; 293 case HWC_DISPLAY_DPI_X: 294 mDisplayData[disp].xdpi = values[i] / 1000.0f; 295 break; 296 case HWC_DISPLAY_DPI_Y: 297 mDisplayData[disp].ydpi = values[i] / 1000.0f; 298 break; 299 default: 300 ALOG_ASSERT(false, "unknown display attribute %#x", 301 DISPLAY_ATTRIBUTES[i]); 302 break; 303 } 304 } 305 306 if (mDisplayData[disp].xdpi == 0.0f || mDisplayData[disp].ydpi == 0.0f) { 307 // is there anything smarter we can do? 308 if (h >= 1080) { 309 mDisplayData[disp].xdpi = ANDROID_DENSITY_XHIGH; 310 mDisplayData[disp].ydpi = ANDROID_DENSITY_XHIGH; 311 } else { 312 mDisplayData[disp].xdpi = ANDROID_DENSITY_TV; 313 mDisplayData[disp].ydpi = ANDROID_DENSITY_TV; 314 } 315 } 316} 317 318int32_t HWComposer::allocateDisplayId() { 319 if (mAllocatedDisplayIDs.count() >= mNumDisplays) { 320 return NO_MEMORY; 321 } 322 int32_t id = mAllocatedDisplayIDs.firstUnmarkedBit(); 323 mAllocatedDisplayIDs.markBit(id); 324 return id; 325} 326 327status_t HWComposer::freeDisplayId(int32_t id) { 328 if (id < HWC_NUM_DISPLAY_TYPES) { 329 // cannot free the reserved IDs 330 return BAD_VALUE; 331 } 332 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 333 return BAD_INDEX; 334 } 335 mAllocatedDisplayIDs.clearBit(id); 336 return NO_ERROR; 337} 338 339nsecs_t HWComposer::getRefreshPeriod() const { 340 return mDisplayData[HWC_DISPLAY_PRIMARY].refresh; 341} 342 343nsecs_t HWComposer::getRefreshTimestamp() const { 344 // this returns the last refresh timestamp. 345 // if the last one is not available, we estimate it based on 346 // the refresh period and whatever closest timestamp we have. 347 Mutex::Autolock _l(mLock); 348 nsecs_t now = systemTime(CLOCK_MONOTONIC); 349 return now - ((now - mLastHwVSync) % mDisplayData[HWC_DISPLAY_PRIMARY].refresh); 350} 351 352float HWComposer::getDpiX() const { 353 return mDisplayData[HWC_DISPLAY_PRIMARY].xdpi; 354} 355 356float HWComposer::getDpiY() const { 357 return mDisplayData[HWC_DISPLAY_PRIMARY].ydpi; 358} 359 360void HWComposer::eventControl(int event, int enabled) { 361 status_t err = NO_ERROR; 362 if (mHwc) { 363 if (!mDebugForceFakeVSync) { 364 err = mHwc->eventControl(mHwc, 0, event, enabled); 365 // error here should not happen -- not sure what we should 366 // do if it does. 367 ALOGE_IF(err, "eventControl(%d, %d) failed %s", 368 event, enabled, strerror(-err)); 369 } 370 } 371 372 if (err == NO_ERROR && mVSyncThread != NULL) { 373 mVSyncThread->setEnabled(enabled); 374 } 375} 376 377status_t HWComposer::createWorkList(int32_t id, size_t numLayers) { 378 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 379 return BAD_INDEX; 380 } 381 382 if (mHwc) { 383 DisplayData& disp(mDisplayData[id]); 384 if (disp.capacity < numLayers || disp.list == NULL) { 385 const size_t size = sizeof(hwc_display_contents_1_t) 386 + numLayers * sizeof(hwc_layer_1_t); 387 free(disp.list); 388 disp.list = (hwc_display_contents_1_t*)malloc(size); 389 disp.capacity = numLayers; 390 } 391 disp.list->flags = HWC_GEOMETRY_CHANGED; 392 disp.list->numHwLayers = numLayers; 393 disp.list->flipFenceFd = -1; 394 } 395 return NO_ERROR; 396} 397 398status_t HWComposer::prepare() { 399 for (size_t i=0 ; i<mNumDisplays ; i++) { 400 mLists[i] = mDisplayData[i].list; 401 if (mLists[i]) { 402 mLists[i]->dpy = EGL_NO_DISPLAY; 403 mLists[i]->sur = EGL_NO_SURFACE; 404 } 405 } 406 int err = mHwc->prepare(mHwc, mNumDisplays, mLists); 407 if (err == NO_ERROR) { 408 // here we're just making sure that "skip" layers are set 409 // to HWC_FRAMEBUFFER and we're also counting how many layers 410 // we have of each type. 411 for (size_t i=0 ; i<mNumDisplays ; i++) { 412 DisplayData& disp(mDisplayData[i]); 413 disp.hasFbComp = false; 414 disp.hasOvComp = false; 415 if (disp.list) { 416 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 417 hwc_layer_1_t& l = disp.list->hwLayers[i]; 418 if (l.flags & HWC_SKIP_LAYER) { 419 l.compositionType = HWC_FRAMEBUFFER; 420 } 421 if (l.compositionType == HWC_FRAMEBUFFER) { 422 disp.hasFbComp = true; 423 } 424 if (l.compositionType == HWC_OVERLAY) { 425 disp.hasOvComp = true; 426 } 427 } 428 } 429 } 430 } 431 return (status_t)err; 432} 433 434bool HWComposer::hasHwcComposition(int32_t id) const { 435 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 436 return false; 437 return mDisplayData[id].hasOvComp; 438} 439 440bool HWComposer::hasGlesComposition(int32_t id) const { 441 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 442 return false; 443 return mDisplayData[id].hasFbComp; 444} 445 446status_t HWComposer::commit() { 447 int err = NO_ERROR; 448 if (mHwc) { 449 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 450 // On version 1.0, the OpenGL ES target surface is communicated 451 // by the (dpy, sur) fields and we are guaranteed to have only 452 // a single display. 453 mLists[0]->dpy = eglGetCurrentDisplay(); 454 mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW); 455 } 456 457 err = mHwc->set(mHwc, mNumDisplays, mLists); 458 459 for (size_t i=0 ; i<mNumDisplays ; i++) { 460 DisplayData& disp(mDisplayData[i]); 461 if (disp.list) { 462 if (disp.list->flipFenceFd != -1) { 463 close(disp.list->flipFenceFd); 464 disp.list->flipFenceFd = -1; 465 } 466 disp.list->flags &= ~HWC_GEOMETRY_CHANGED; 467 } 468 } 469 } 470 return (status_t)err; 471} 472 473status_t HWComposer::release() const { 474 if (mHwc) { 475 mHwc->eventControl(mHwc, 0, HWC_EVENT_VSYNC, 0); 476 return (status_t)mHwc->blank(mHwc, 0, 1); 477 } 478 return NO_ERROR; 479} 480 481status_t HWComposer::acquire() const { 482 if (mHwc) { 483 return (status_t)mHwc->blank(mHwc, 0, 0); 484 } 485 return NO_ERROR; 486} 487 488size_t HWComposer::getNumLayers(int32_t id) const { 489 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 490 return 0; 491 } 492 return (mHwc && mDisplayData[id].list) ? 493 mDisplayData[id].list->numHwLayers : 0; 494} 495 496/* 497 * Helper template to implement a concrete HWCLayer 498 * This holds the pointer to the concrete hwc layer type 499 * and implements the "iterable" side of HWCLayer. 500 */ 501template<typename CONCRETE, typename HWCTYPE> 502class Iterable : public HWComposer::HWCLayer { 503protected: 504 HWCTYPE* const mLayerList; 505 HWCTYPE* mCurrentLayer; 506 Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer) { } 507 inline HWCTYPE const * getLayer() const { return mCurrentLayer; } 508 inline HWCTYPE* getLayer() { return mCurrentLayer; } 509 virtual ~Iterable() { } 510private: 511 // returns a copy of ourselves 512 virtual HWComposer::HWCLayer* dup() { 513 return new CONCRETE( static_cast<const CONCRETE&>(*this) ); 514 } 515 virtual status_t setLayer(size_t index) { 516 mCurrentLayer = &mLayerList[index]; 517 return NO_ERROR; 518 } 519}; 520 521/* 522 * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0. 523 * This implements the HWCLayer side of HWCIterableLayer. 524 */ 525class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> { 526public: 527 HWCLayerVersion1(hwc_layer_1_t* layer) 528 : Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer) { } 529 530 virtual int32_t getCompositionType() const { 531 return getLayer()->compositionType; 532 } 533 virtual uint32_t getHints() const { 534 return getLayer()->hints; 535 } 536 virtual int getAndResetReleaseFenceFd() { 537 int fd = getLayer()->releaseFenceFd; 538 getLayer()->releaseFenceFd = -1; 539 return fd; 540 } 541 virtual void setAcquireFenceFd(int fenceFd) { 542 getLayer()->acquireFenceFd = fenceFd; 543 } 544 545 virtual void setDefaultState() { 546 getLayer()->compositionType = HWC_FRAMEBUFFER; 547 getLayer()->hints = 0; 548 getLayer()->flags = HWC_SKIP_LAYER; 549 getLayer()->transform = 0; 550 getLayer()->blending = HWC_BLENDING_NONE; 551 getLayer()->visibleRegionScreen.numRects = 0; 552 getLayer()->visibleRegionScreen.rects = NULL; 553 getLayer()->acquireFenceFd = -1; 554 getLayer()->releaseFenceFd = -1; 555 } 556 virtual void setSkip(bool skip) { 557 if (skip) { 558 getLayer()->flags |= HWC_SKIP_LAYER; 559 } else { 560 getLayer()->flags &= ~HWC_SKIP_LAYER; 561 } 562 } 563 virtual void setBlending(uint32_t blending) { 564 getLayer()->blending = blending; 565 } 566 virtual void setTransform(uint32_t transform) { 567 getLayer()->transform = transform; 568 } 569 virtual void setFrame(const Rect& frame) { 570 reinterpret_cast<Rect&>(getLayer()->displayFrame) = frame; 571 } 572 virtual void setCrop(const Rect& crop) { 573 reinterpret_cast<Rect&>(getLayer()->sourceCrop) = crop; 574 } 575 virtual void setVisibleRegionScreen(const Region& reg) { 576 // Region::getSharedBuffer creates a reference to the underlying 577 // SharedBuffer of this Region, this reference is freed 578 // in onDisplayed() 579 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 580 SharedBuffer const* sb = reg.getSharedBuffer(&visibleRegion.numRects); 581 visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(sb->data()); 582 } 583 virtual void setBuffer(const sp<GraphicBuffer>& buffer) { 584 if (buffer == 0 || buffer->handle == 0) { 585 getLayer()->compositionType = HWC_FRAMEBUFFER; 586 getLayer()->flags |= HWC_SKIP_LAYER; 587 getLayer()->handle = 0; 588 } else { 589 getLayer()->handle = buffer->handle; 590 } 591 } 592 virtual void onDisplayed() { 593 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 594 SharedBuffer const* sb = SharedBuffer::bufferFromData(visibleRegion.rects); 595 if (sb) { 596 sb->release(); 597 // not technically needed but safer 598 visibleRegion.numRects = 0; 599 visibleRegion.rects = NULL; 600 } 601 } 602}; 603 604/* 605 * returns an iterator initialized at a given index in the layer list 606 */ 607HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) { 608 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 609 return LayerListIterator(); 610 } 611 const DisplayData& disp(mDisplayData[id]); 612 if (!mHwc || !disp.list || index > disp.list->numHwLayers) { 613 return LayerListIterator(); 614 } 615 return LayerListIterator(new HWCLayerVersion1(disp.list->hwLayers), index); 616} 617 618/* 619 * returns an iterator on the beginning of the layer list 620 */ 621HWComposer::LayerListIterator HWComposer::begin(int32_t id) { 622 return getLayerIterator(id, 0); 623} 624 625/* 626 * returns an iterator on the end of the layer list 627 */ 628HWComposer::LayerListIterator HWComposer::end(int32_t id) { 629 return getLayerIterator(id, getNumLayers(id)); 630} 631 632void HWComposer::dump(String8& result, char* buffer, size_t SIZE, 633 const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const { 634 if (mHwc) { 635 result.append("Hardware Composer state:\n"); 636 result.appendFormat(" mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync); 637 for (size_t i=0 ; i<mNumDisplays ; i++) { 638 const DisplayData& disp(mDisplayData[i]); 639 if (disp.list) { 640 result.appendFormat(" id=%d, numHwLayers=%u, flags=%08x\n", 641 i, disp.list->numHwLayers, disp.list->flags); 642 result.append( 643 " type | handle | hints | flags | tr | blend | format | source crop | frame name \n" 644 "----------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n"); 645 // " ________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____] 646 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 647 const hwc_layer_1_t&l = disp.list->hwLayers[i]; 648 const sp<LayerBase> layer(visibleLayersSortedByZ[i]); 649 int32_t format = -1; 650 if (layer->getLayer() != NULL) { 651 const sp<GraphicBuffer>& buffer( 652 layer->getLayer()->getActiveBuffer()); 653 if (buffer != NULL) { 654 format = buffer->getPixelFormat(); 655 } 656 } 657 result.appendFormat( 658 " %8s | %08x | %08x | %08x | %02x | %05x | %08x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d] %s\n", 659 l.compositionType ? "OVERLAY" : "FB", 660 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format, 661 l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom, 662 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, 663 layer->getName().string()); 664 } 665 } 666 } 667 } 668 669 if (mHwc && mHwc->dump) { 670 mHwc->dump(mHwc, buffer, SIZE); 671 result.append(buffer); 672 } 673} 674 675// --------------------------------------------------------------------------- 676 677HWComposer::VSyncThread::VSyncThread(HWComposer& hwc) 678 : mHwc(hwc), mEnabled(false), 679 mNextFakeVSync(0), 680 mRefreshPeriod(hwc.getRefreshPeriod()) 681{ 682} 683 684void HWComposer::VSyncThread::setEnabled(bool enabled) { 685 Mutex::Autolock _l(mLock); 686 mEnabled = enabled; 687 mCondition.signal(); 688} 689 690void HWComposer::VSyncThread::onFirstRef() { 691 run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE); 692} 693 694bool HWComposer::VSyncThread::threadLoop() { 695 { // scope for lock 696 Mutex::Autolock _l(mLock); 697 while (!mEnabled) { 698 mCondition.wait(mLock); 699 } 700 } 701 702 const nsecs_t period = mRefreshPeriod; 703 const nsecs_t now = systemTime(CLOCK_MONOTONIC); 704 nsecs_t next_vsync = mNextFakeVSync; 705 nsecs_t sleep = next_vsync - now; 706 if (sleep < 0) { 707 // we missed, find where the next vsync should be 708 sleep = (period - ((now - next_vsync) % period)); 709 next_vsync = now + sleep; 710 } 711 mNextFakeVSync = next_vsync + period; 712 713 struct timespec spec; 714 spec.tv_sec = next_vsync / 1000000000; 715 spec.tv_nsec = next_vsync % 1000000000; 716 717 int err; 718 do { 719 err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL); 720 } while (err<0 && errno == EINTR); 721 722 if (err == 0) { 723 mHwc.mEventHandler.onVSyncReceived(0, next_vsync); 724 } 725 726 return true; 727} 728 729// --------------------------------------------------------------------------- 730}; // namespace android 731