HWComposer.cpp revision 399184a4cd728ea1421fb0bc1722274a29e38f4a
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#include <stdint.h> 20#include <stdio.h> 21#include <stdlib.h> 22#include <string.h> 23#include <sys/types.h> 24#include <math.h> 25 26#include <utils/Errors.h> 27#include <utils/misc.h> 28#include <utils/NativeHandle.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 <android/configuration.h> 40 41#include <cutils/log.h> 42#include <cutils/properties.h> 43 44#include "HWComposer.h" 45 46#include "../Layer.h" // needed only for debugging 47#include "../SurfaceFlinger.h" 48 49namespace android { 50 51#define MIN_HWC_HEADER_VERSION HWC_HEADER_VERSION 52 53static uint32_t hwcApiVersion(const hwc_composer_device_1_t* hwc) { 54 uint32_t hwcVersion = hwc->common.version; 55 return hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK; 56} 57 58static uint32_t hwcHeaderVersion(const hwc_composer_device_1_t* hwc) { 59 uint32_t hwcVersion = hwc->common.version; 60 return hwcVersion & HARDWARE_API_VERSION_2_HEADER_MASK; 61} 62 63static bool hwcHasApiVersion(const hwc_composer_device_1_t* hwc, 64 uint32_t version) { 65 return hwcApiVersion(hwc) >= (version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK); 66} 67 68// --------------------------------------------------------------------------- 69 70struct HWComposer::cb_context { 71 struct callbacks : public hwc_procs_t { 72 // these are here to facilitate the transition when adding 73 // new callbacks (an implementation can check for NULL before 74 // calling a new callback). 75 void (*zero[4])(void); 76 }; 77 callbacks procs; 78 HWComposer* hwc; 79}; 80 81// --------------------------------------------------------------------------- 82 83HWComposer::HWComposer( 84 const sp<SurfaceFlinger>& flinger, 85 EventHandler& handler) 86 : mFlinger(flinger), 87 mFbDev(0), mHwc(0), mNumDisplays(1), 88 mCBContext(new cb_context), 89 mEventHandler(handler), 90 mDebugForceFakeVSync(false) 91{ 92 for (size_t i =0 ; i<MAX_HWC_DISPLAYS ; i++) { 93 mLists[i] = 0; 94 } 95 96 for (size_t i=0 ; i<HWC_NUM_PHYSICAL_DISPLAY_TYPES ; i++) { 97 mLastHwVSync[i] = 0; 98 mVSyncCounts[i] = 0; 99 } 100 101 char value[PROPERTY_VALUE_MAX]; 102 property_get("debug.sf.no_hw_vsync", value, "0"); 103 mDebugForceFakeVSync = atoi(value); 104 105 bool needVSyncThread = true; 106 107 // Note: some devices may insist that the FB HAL be opened before HWC. 108 int fberr = loadFbHalModule(); 109 loadHwcModule(); 110 111 if (mFbDev && mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 112 // close FB HAL if we don't needed it. 113 // FIXME: this is temporary until we're not forced to open FB HAL 114 // before HWC. 115 framebuffer_close(mFbDev); 116 mFbDev = NULL; 117 } 118 119 // If we have no HWC, or a pre-1.1 HWC, an FB dev is mandatory. 120 if ((!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 121 && !mFbDev) { 122 ALOGE("ERROR: failed to open framebuffer (%s), aborting", 123 strerror(-fberr)); 124 abort(); 125 } 126 127 // these display IDs are always reserved 128 for (size_t i=0 ; i<NUM_BUILTIN_DISPLAYS ; i++) { 129 mAllocatedDisplayIDs.markBit(i); 130 } 131 132 if (mHwc) { 133 ALOGI("Using %s version %u.%u", HWC_HARDWARE_COMPOSER, 134 (hwcApiVersion(mHwc) >> 24) & 0xff, 135 (hwcApiVersion(mHwc) >> 16) & 0xff); 136 if (mHwc->registerProcs) { 137 mCBContext->hwc = this; 138 mCBContext->procs.invalidate = &hook_invalidate; 139 mCBContext->procs.vsync = &hook_vsync; 140 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 141 mCBContext->procs.hotplug = &hook_hotplug; 142 else 143 mCBContext->procs.hotplug = NULL; 144 memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero)); 145 mHwc->registerProcs(mHwc, &mCBContext->procs); 146 } 147 148 // don't need a vsync thread if we have a hardware composer 149 needVSyncThread = false; 150 // always turn vsync off when we start 151 eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); 152 153 // the number of displays we actually have depends on the 154 // hw composer version 155 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 156 // 1.3 adds support for virtual displays 157 mNumDisplays = MAX_HWC_DISPLAYS; 158 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 159 // 1.1 adds support for multiple displays 160 mNumDisplays = NUM_BUILTIN_DISPLAYS; 161 } else { 162 mNumDisplays = 1; 163 } 164 } 165 166 if (mFbDev) { 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.connected = true; 172 disp.width = mFbDev->width; 173 disp.height = mFbDev->height; 174 disp.format = mFbDev->format; 175 disp.xdpi = mFbDev->xdpi; 176 disp.ydpi = mFbDev->ydpi; 177 if (disp.refresh == 0) { 178 disp.refresh = nsecs_t(1e9 / mFbDev->fps); 179 ALOGW("getting VSYNC period from fb HAL: %lld", disp.refresh); 180 } 181 if (disp.refresh == 0) { 182 disp.refresh = nsecs_t(1e9 / 60.0); 183 ALOGW("getting VSYNC period from thin air: %lld", 184 mDisplayData[HWC_DISPLAY_PRIMARY].refresh); 185 } 186 } else if (mHwc) { 187 // here we're guaranteed to have at least HWC 1.1 188 for (size_t i =0 ; i<NUM_BUILTIN_DISPLAYS ; i++) { 189 queryDisplayProperties(i); 190 } 191 } 192 193 if (needVSyncThread) { 194 // we don't have VSYNC support, we need to fake it 195 mVSyncThread = new VSyncThread(*this); 196 } 197} 198 199HWComposer::~HWComposer() { 200 if (mHwc) { 201 eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); 202 } 203 if (mVSyncThread != NULL) { 204 mVSyncThread->requestExitAndWait(); 205 } 206 if (mHwc) { 207 hwc_close_1(mHwc); 208 } 209 if (mFbDev) { 210 framebuffer_close(mFbDev); 211 } 212 delete mCBContext; 213} 214 215// Load and prepare the hardware composer module. Sets mHwc. 216void HWComposer::loadHwcModule() 217{ 218 hw_module_t const* module; 219 220 if (hw_get_module(HWC_HARDWARE_MODULE_ID, &module) != 0) { 221 ALOGE("%s module not found", HWC_HARDWARE_MODULE_ID); 222 return; 223 } 224 225 int err = hwc_open_1(module, &mHwc); 226 if (err) { 227 ALOGE("%s device failed to initialize (%s)", 228 HWC_HARDWARE_COMPOSER, strerror(-err)); 229 return; 230 } 231 232 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_0) || 233 hwcHeaderVersion(mHwc) < MIN_HWC_HEADER_VERSION || 234 hwcHeaderVersion(mHwc) > HWC_HEADER_VERSION) { 235 ALOGE("%s device version %#x unsupported, will not be used", 236 HWC_HARDWARE_COMPOSER, mHwc->common.version); 237 hwc_close_1(mHwc); 238 mHwc = NULL; 239 return; 240 } 241} 242 243// Load and prepare the FB HAL, which uses the gralloc module. Sets mFbDev. 244int HWComposer::loadFbHalModule() 245{ 246 hw_module_t const* module; 247 248 int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module); 249 if (err != 0) { 250 ALOGE("%s module not found", GRALLOC_HARDWARE_MODULE_ID); 251 return err; 252 } 253 254 return framebuffer_open(module, &mFbDev); 255} 256 257status_t HWComposer::initCheck() const { 258 return mHwc ? NO_ERROR : NO_INIT; 259} 260 261void HWComposer::hook_invalidate(const struct hwc_procs* procs) { 262 cb_context* ctx = reinterpret_cast<cb_context*>( 263 const_cast<hwc_procs_t*>(procs)); 264 ctx->hwc->invalidate(); 265} 266 267void HWComposer::hook_vsync(const struct hwc_procs* procs, int disp, 268 int64_t timestamp) { 269 cb_context* ctx = reinterpret_cast<cb_context*>( 270 const_cast<hwc_procs_t*>(procs)); 271 ctx->hwc->vsync(disp, timestamp); 272} 273 274void HWComposer::hook_hotplug(const struct hwc_procs* procs, int disp, 275 int connected) { 276 cb_context* ctx = reinterpret_cast<cb_context*>( 277 const_cast<hwc_procs_t*>(procs)); 278 ctx->hwc->hotplug(disp, connected); 279} 280 281void HWComposer::invalidate() { 282 mFlinger->repaintEverything(); 283} 284 285void HWComposer::vsync(int disp, int64_t timestamp) { 286 if (uint32_t(disp) < HWC_NUM_PHYSICAL_DISPLAY_TYPES) { 287 { 288 Mutex::Autolock _l(mLock); 289 290 // There have been reports of HWCs that signal several vsync events 291 // with the same timestamp when turning the display off and on. This 292 // is a bug in the HWC implementation, but filter the extra events 293 // out here so they don't cause havoc downstream. 294 if (timestamp == mLastHwVSync[disp]) { 295 ALOGW("Ignoring duplicate VSYNC event from HWC (t=%lld)", 296 timestamp); 297 return; 298 } 299 300 mLastHwVSync[disp] = timestamp; 301 } 302 303 char tag[16]; 304 snprintf(tag, sizeof(tag), "HW_VSYNC_%1u", disp); 305 ATRACE_INT(tag, ++mVSyncCounts[disp] & 1); 306 307 mEventHandler.onVSyncReceived(disp, timestamp); 308 } 309} 310 311void HWComposer::hotplug(int disp, int connected) { 312 if (disp == HWC_DISPLAY_PRIMARY || disp >= VIRTUAL_DISPLAY_ID_BASE) { 313 ALOGE("hotplug event received for invalid display: disp=%d connected=%d", 314 disp, connected); 315 return; 316 } 317 queryDisplayProperties(disp); 318 mEventHandler.onHotplugReceived(disp, bool(connected)); 319} 320 321static float getDefaultDensity(uint32_t height) { 322 if (height >= 1080) return ACONFIGURATION_DENSITY_XHIGH; 323 else return ACONFIGURATION_DENSITY_TV; 324} 325 326static const uint32_t DISPLAY_ATTRIBUTES[] = { 327 HWC_DISPLAY_VSYNC_PERIOD, 328 HWC_DISPLAY_WIDTH, 329 HWC_DISPLAY_HEIGHT, 330 HWC_DISPLAY_DPI_X, 331 HWC_DISPLAY_DPI_Y, 332 HWC_DISPLAY_NO_ATTRIBUTE, 333}; 334#define NUM_DISPLAY_ATTRIBUTES (sizeof(DISPLAY_ATTRIBUTES) / sizeof(DISPLAY_ATTRIBUTES)[0]) 335 336status_t HWComposer::queryDisplayProperties(int disp) { 337 338 LOG_ALWAYS_FATAL_IF(!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); 339 340 // use zero as default value for unspecified attributes 341 int32_t values[NUM_DISPLAY_ATTRIBUTES - 1]; 342 memset(values, 0, sizeof(values)); 343 344 uint32_t config; 345 size_t numConfigs = 1; 346 status_t err = mHwc->getDisplayConfigs(mHwc, disp, &config, &numConfigs); 347 if (err != NO_ERROR) { 348 // this can happen if an unpluggable display is not connected 349 mDisplayData[disp].connected = false; 350 return err; 351 } 352 353 err = mHwc->getDisplayAttributes(mHwc, disp, config, DISPLAY_ATTRIBUTES, values); 354 if (err != NO_ERROR) { 355 // we can't get this display's info. turn it off. 356 mDisplayData[disp].connected = false; 357 return err; 358 } 359 360 int32_t w = 0, h = 0; 361 for (size_t i = 0; i < NUM_DISPLAY_ATTRIBUTES - 1; i++) { 362 switch (DISPLAY_ATTRIBUTES[i]) { 363 case HWC_DISPLAY_VSYNC_PERIOD: 364 mDisplayData[disp].refresh = nsecs_t(values[i]); 365 break; 366 case HWC_DISPLAY_WIDTH: 367 mDisplayData[disp].width = values[i]; 368 break; 369 case HWC_DISPLAY_HEIGHT: 370 mDisplayData[disp].height = values[i]; 371 break; 372 case HWC_DISPLAY_DPI_X: 373 mDisplayData[disp].xdpi = values[i] / 1000.0f; 374 break; 375 case HWC_DISPLAY_DPI_Y: 376 mDisplayData[disp].ydpi = values[i] / 1000.0f; 377 break; 378 default: 379 ALOG_ASSERT(false, "unknown display attribute[%d] %#x", 380 i, DISPLAY_ATTRIBUTES[i]); 381 break; 382 } 383 } 384 385 // FIXME: what should we set the format to? 386 mDisplayData[disp].format = HAL_PIXEL_FORMAT_RGBA_8888; 387 mDisplayData[disp].connected = true; 388 if (mDisplayData[disp].xdpi == 0.0f || mDisplayData[disp].ydpi == 0.0f) { 389 float dpi = getDefaultDensity(h); 390 mDisplayData[disp].xdpi = dpi; 391 mDisplayData[disp].ydpi = dpi; 392 } 393 return NO_ERROR; 394} 395 396status_t HWComposer::setVirtualDisplayProperties(int32_t id, 397 uint32_t w, uint32_t h, uint32_t format) { 398 if (id < VIRTUAL_DISPLAY_ID_BASE || id >= int32_t(mNumDisplays) || 399 !mAllocatedDisplayIDs.hasBit(id)) { 400 return BAD_INDEX; 401 } 402 mDisplayData[id].width = w; 403 mDisplayData[id].height = h; 404 mDisplayData[id].format = format; 405 mDisplayData[id].xdpi = mDisplayData[id].ydpi = getDefaultDensity(h); 406 return NO_ERROR; 407} 408 409int32_t HWComposer::allocateDisplayId() { 410 if (mAllocatedDisplayIDs.count() >= mNumDisplays) { 411 return NO_MEMORY; 412 } 413 int32_t id = mAllocatedDisplayIDs.firstUnmarkedBit(); 414 mAllocatedDisplayIDs.markBit(id); 415 mDisplayData[id].connected = true; 416 return id; 417} 418 419status_t HWComposer::freeDisplayId(int32_t id) { 420 if (id < NUM_BUILTIN_DISPLAYS) { 421 // cannot free the reserved IDs 422 return BAD_VALUE; 423 } 424 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 425 return BAD_INDEX; 426 } 427 mAllocatedDisplayIDs.clearBit(id); 428 mDisplayData[id].connected = false; 429 return NO_ERROR; 430} 431 432nsecs_t HWComposer::getRefreshPeriod(int disp) const { 433 return mDisplayData[disp].refresh; 434} 435 436nsecs_t HWComposer::getRefreshTimestamp(int disp) const { 437 // this returns the last refresh timestamp. 438 // if the last one is not available, we estimate it based on 439 // the refresh period and whatever closest timestamp we have. 440 Mutex::Autolock _l(mLock); 441 nsecs_t now = systemTime(CLOCK_MONOTONIC); 442 return now - ((now - mLastHwVSync[disp]) % mDisplayData[disp].refresh); 443} 444 445sp<Fence> HWComposer::getDisplayFence(int disp) const { 446 return mDisplayData[disp].lastDisplayFence; 447} 448 449uint32_t HWComposer::getWidth(int disp) const { 450 return mDisplayData[disp].width; 451} 452 453uint32_t HWComposer::getHeight(int disp) const { 454 return mDisplayData[disp].height; 455} 456 457uint32_t HWComposer::getFormat(int disp) const { 458 if (uint32_t(disp)>31 || !mAllocatedDisplayIDs.hasBit(disp)) { 459 return HAL_PIXEL_FORMAT_RGBA_8888; 460 } else { 461 return mDisplayData[disp].format; 462 } 463} 464 465float HWComposer::getDpiX(int disp) const { 466 return mDisplayData[disp].xdpi; 467} 468 469float HWComposer::getDpiY(int disp) const { 470 return mDisplayData[disp].ydpi; 471} 472 473bool HWComposer::isConnected(int disp) const { 474 return mDisplayData[disp].connected; 475} 476 477void HWComposer::eventControl(int disp, int event, int enabled) { 478 if (uint32_t(disp)>31 || !mAllocatedDisplayIDs.hasBit(disp)) { 479 ALOGD("eventControl ignoring event %d on unallocated disp %d (en=%d)", 480 event, disp, enabled); 481 return; 482 } 483 if (event != EVENT_VSYNC) { 484 ALOGW("eventControl got unexpected event %d (disp=%d en=%d)", 485 event, disp, enabled); 486 return; 487 } 488 status_t err = NO_ERROR; 489 if (mHwc && !mDebugForceFakeVSync) { 490 // NOTE: we use our own internal lock here because we have to call 491 // into the HWC with the lock held, and we want to make sure 492 // that even if HWC blocks (which it shouldn't), it won't 493 // affect other threads. 494 Mutex::Autolock _l(mEventControlLock); 495 const int32_t eventBit = 1UL << event; 496 const int32_t newValue = enabled ? eventBit : 0; 497 const int32_t oldValue = mDisplayData[disp].events & eventBit; 498 if (newValue != oldValue) { 499 ATRACE_CALL(); 500 err = mHwc->eventControl(mHwc, disp, event, enabled); 501 if (!err) { 502 int32_t& events(mDisplayData[disp].events); 503 events = (events & ~eventBit) | newValue; 504 } 505 } 506 // error here should not happen -- not sure what we should 507 // do if it does. 508 ALOGE_IF(err, "eventControl(%d, %d) failed %s", 509 event, enabled, strerror(-err)); 510 } 511 512 if (err == NO_ERROR && mVSyncThread != NULL) { 513 mVSyncThread->setEnabled(enabled); 514 } 515} 516 517status_t HWComposer::createWorkList(int32_t id, size_t numLayers) { 518 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 519 return BAD_INDEX; 520 } 521 522 if (mHwc) { 523 DisplayData& disp(mDisplayData[id]); 524 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 525 // we need space for the HWC_FRAMEBUFFER_TARGET 526 numLayers++; 527 } 528 if (disp.capacity < numLayers || disp.list == NULL) { 529 size_t size = sizeof(hwc_display_contents_1_t) 530 + numLayers * sizeof(hwc_layer_1_t); 531 free(disp.list); 532 disp.list = (hwc_display_contents_1_t*)malloc(size); 533 disp.capacity = numLayers; 534 } 535 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 536 disp.framebufferTarget = &disp.list->hwLayers[numLayers - 1]; 537 memset(disp.framebufferTarget, 0, sizeof(hwc_layer_1_t)); 538 const hwc_rect_t r = { 0, 0, (int) disp.width, (int) disp.height }; 539 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; 540 disp.framebufferTarget->hints = 0; 541 disp.framebufferTarget->flags = 0; 542 disp.framebufferTarget->handle = disp.fbTargetHandle; 543 disp.framebufferTarget->transform = 0; 544 disp.framebufferTarget->blending = HWC_BLENDING_PREMULT; 545 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 546 disp.framebufferTarget->sourceCropf.left = 0; 547 disp.framebufferTarget->sourceCropf.top = 0; 548 disp.framebufferTarget->sourceCropf.right = disp.width; 549 disp.framebufferTarget->sourceCropf.bottom = disp.height; 550 } else { 551 disp.framebufferTarget->sourceCrop = r; 552 } 553 disp.framebufferTarget->displayFrame = r; 554 disp.framebufferTarget->visibleRegionScreen.numRects = 1; 555 disp.framebufferTarget->visibleRegionScreen.rects = 556 &disp.framebufferTarget->displayFrame; 557 disp.framebufferTarget->acquireFenceFd = -1; 558 disp.framebufferTarget->releaseFenceFd = -1; 559 disp.framebufferTarget->planeAlpha = 0xFF; 560 } 561 disp.list->retireFenceFd = -1; 562 disp.list->flags = HWC_GEOMETRY_CHANGED; 563 disp.list->numHwLayers = numLayers; 564 } 565 return NO_ERROR; 566} 567 568status_t HWComposer::setFramebufferTarget(int32_t id, 569 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buf) { 570 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 571 return BAD_INDEX; 572 } 573 DisplayData& disp(mDisplayData[id]); 574 if (!disp.framebufferTarget) { 575 // this should never happen, but apparently eglCreateWindowSurface() 576 // triggers a Surface::queueBuffer() on some 577 // devices (!?) -- log and ignore. 578 ALOGE("HWComposer: framebufferTarget is null"); 579 return NO_ERROR; 580 } 581 582 int acquireFenceFd = -1; 583 if (acquireFence->isValid()) { 584 acquireFenceFd = acquireFence->dup(); 585 } 586 587 // ALOGD("fbPost: handle=%p, fence=%d", buf->handle, acquireFenceFd); 588 disp.fbTargetHandle = buf->handle; 589 disp.framebufferTarget->handle = disp.fbTargetHandle; 590 disp.framebufferTarget->acquireFenceFd = acquireFenceFd; 591 return NO_ERROR; 592} 593 594status_t HWComposer::prepare() { 595 for (size_t i=0 ; i<mNumDisplays ; i++) { 596 DisplayData& disp(mDisplayData[i]); 597 if (disp.framebufferTarget) { 598 // make sure to reset the type to HWC_FRAMEBUFFER_TARGET 599 // DO NOT reset the handle field to NULL, because it's possible 600 // that we have nothing to redraw (eg: eglSwapBuffers() not called) 601 // in which case, we should continue to use the same buffer. 602 LOG_FATAL_IF(disp.list == NULL); 603 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; 604 } 605 if (!disp.connected && disp.list != NULL) { 606 ALOGW("WARNING: disp %d: connected, non-null list, layers=%d", 607 i, disp.list->numHwLayers); 608 } 609 mLists[i] = disp.list; 610 if (mLists[i]) { 611 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 612 mLists[i]->outbuf = disp.outbufHandle; 613 mLists[i]->outbufAcquireFenceFd = -1; 614 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 615 // garbage data to catch improper use 616 mLists[i]->dpy = (hwc_display_t)0xDEADBEEF; 617 mLists[i]->sur = (hwc_surface_t)0xDEADBEEF; 618 } else { 619 mLists[i]->dpy = EGL_NO_DISPLAY; 620 mLists[i]->sur = EGL_NO_SURFACE; 621 } 622 } 623 } 624 625 int err = mHwc->prepare(mHwc, mNumDisplays, mLists); 626 ALOGE_IF(err, "HWComposer: prepare failed (%s)", strerror(-err)); 627 628 if (err == NO_ERROR) { 629 // here we're just making sure that "skip" layers are set 630 // to HWC_FRAMEBUFFER and we're also counting how many layers 631 // we have of each type. 632 // 633 // If there are no window layers, we treat the display has having FB 634 // composition, because SurfaceFlinger will use GLES to draw the 635 // wormhole region. 636 for (size_t i=0 ; i<mNumDisplays ; i++) { 637 DisplayData& disp(mDisplayData[i]); 638 disp.hasFbComp = false; 639 disp.hasOvComp = false; 640 if (disp.list) { 641 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 642 hwc_layer_1_t& l = disp.list->hwLayers[i]; 643 644 //ALOGD("prepare: %d, type=%d, handle=%p", 645 // i, l.compositionType, l.handle); 646 647 if (l.flags & HWC_SKIP_LAYER) { 648 l.compositionType = HWC_FRAMEBUFFER; 649 } 650 if (l.compositionType == HWC_FRAMEBUFFER) { 651 disp.hasFbComp = true; 652 } 653 if (l.compositionType == HWC_OVERLAY) { 654 disp.hasOvComp = true; 655 } 656 } 657 if (disp.list->numHwLayers == (disp.framebufferTarget ? 1 : 0)) { 658 disp.hasFbComp = true; 659 } 660 } else { 661 disp.hasFbComp = true; 662 } 663 } 664 } 665 return (status_t)err; 666} 667 668bool HWComposer::hasHwcComposition(int32_t id) const { 669 if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 670 return false; 671 return mDisplayData[id].hasOvComp; 672} 673 674bool HWComposer::hasGlesComposition(int32_t id) const { 675 if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 676 return true; 677 return mDisplayData[id].hasFbComp; 678} 679 680sp<Fence> HWComposer::getAndResetReleaseFence(int32_t id) { 681 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 682 return Fence::NO_FENCE; 683 684 int fd = INVALID_OPERATION; 685 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 686 const DisplayData& disp(mDisplayData[id]); 687 if (disp.framebufferTarget) { 688 fd = disp.framebufferTarget->releaseFenceFd; 689 disp.framebufferTarget->acquireFenceFd = -1; 690 disp.framebufferTarget->releaseFenceFd = -1; 691 } 692 } 693 return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE; 694} 695 696status_t HWComposer::commit() { 697 int err = NO_ERROR; 698 if (mHwc) { 699 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 700 // On version 1.0, the OpenGL ES target surface is communicated 701 // by the (dpy, sur) fields and we are guaranteed to have only 702 // a single display. 703 mLists[0]->dpy = eglGetCurrentDisplay(); 704 mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW); 705 } 706 707 for (size_t i=VIRTUAL_DISPLAY_ID_BASE; i<mNumDisplays; i++) { 708 DisplayData& disp(mDisplayData[i]); 709 if (disp.outbufHandle) { 710 mLists[i]->outbuf = disp.outbufHandle; 711 mLists[i]->outbufAcquireFenceFd = 712 disp.outbufAcquireFence->dup(); 713 } 714 } 715 716 err = mHwc->set(mHwc, mNumDisplays, mLists); 717 718 for (size_t i=0 ; i<mNumDisplays ; i++) { 719 DisplayData& disp(mDisplayData[i]); 720 disp.lastDisplayFence = disp.lastRetireFence; 721 disp.lastRetireFence = Fence::NO_FENCE; 722 if (disp.list) { 723 if (disp.list->retireFenceFd != -1) { 724 disp.lastRetireFence = new Fence(disp.list->retireFenceFd); 725 disp.list->retireFenceFd = -1; 726 } 727 disp.list->flags &= ~HWC_GEOMETRY_CHANGED; 728 } 729 } 730 } 731 return (status_t)err; 732} 733 734status_t HWComposer::release(int disp) { 735 LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE); 736 if (mHwc) { 737 eventControl(disp, HWC_EVENT_VSYNC, 0); 738 return (status_t)mHwc->blank(mHwc, disp, 1); 739 } 740 return NO_ERROR; 741} 742 743status_t HWComposer::acquire(int disp) { 744 LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE); 745 if (mHwc) { 746 return (status_t)mHwc->blank(mHwc, disp, 0); 747 } 748 return NO_ERROR; 749} 750 751void HWComposer::disconnectDisplay(int disp) { 752 LOG_ALWAYS_FATAL_IF(disp < 0 || disp == HWC_DISPLAY_PRIMARY); 753 DisplayData& dd(mDisplayData[disp]); 754 free(dd.list); 755 dd.list = NULL; 756 dd.framebufferTarget = NULL; // points into dd.list 757 dd.fbTargetHandle = NULL; 758 dd.outbufHandle = NULL; 759 dd.lastRetireFence = Fence::NO_FENCE; 760 dd.lastDisplayFence = Fence::NO_FENCE; 761 dd.outbufAcquireFence = Fence::NO_FENCE; 762} 763 764int HWComposer::getVisualID() const { 765 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 766 // FIXME: temporary hack until HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED 767 // is supported by the implementation. we can only be in this case 768 // if we have HWC 1.1 769 return HAL_PIXEL_FORMAT_RGBA_8888; 770 //return HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED; 771 } else { 772 return mFbDev->format; 773 } 774} 775 776bool HWComposer::supportsFramebufferTarget() const { 777 return (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); 778} 779 780int HWComposer::fbPost(int32_t id, 781 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buffer) { 782 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 783 return setFramebufferTarget(id, acquireFence, buffer); 784 } else { 785 acquireFence->waitForever("HWComposer::fbPost"); 786 return mFbDev->post(mFbDev, buffer->handle); 787 } 788} 789 790int HWComposer::fbCompositionComplete() { 791 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 792 return NO_ERROR; 793 794 if (mFbDev->compositionComplete) { 795 return mFbDev->compositionComplete(mFbDev); 796 } else { 797 return INVALID_OPERATION; 798 } 799} 800 801void HWComposer::fbDump(String8& result) { 802 if (mFbDev && mFbDev->common.version >= 1 && mFbDev->dump) { 803 const size_t SIZE = 4096; 804 char buffer[SIZE]; 805 mFbDev->dump(mFbDev, buffer, SIZE); 806 result.append(buffer); 807 } 808} 809 810status_t HWComposer::setOutputBuffer(int32_t id, const sp<Fence>& acquireFence, 811 const sp<GraphicBuffer>& buf) { 812 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 813 return BAD_INDEX; 814 if (id < VIRTUAL_DISPLAY_ID_BASE) 815 return INVALID_OPERATION; 816 817 DisplayData& disp(mDisplayData[id]); 818 disp.outbufHandle = buf->handle; 819 disp.outbufAcquireFence = acquireFence; 820 return NO_ERROR; 821} 822 823sp<Fence> HWComposer::getLastRetireFence(int32_t id) { 824 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 825 return Fence::NO_FENCE; 826 return mDisplayData[id].lastRetireFence; 827} 828 829/* 830 * Helper template to implement a concrete HWCLayer 831 * This holds the pointer to the concrete hwc layer type 832 * and implements the "iterable" side of HWCLayer. 833 */ 834template<typename CONCRETE, typename HWCTYPE> 835class Iterable : public HWComposer::HWCLayer { 836protected: 837 HWCTYPE* const mLayerList; 838 HWCTYPE* mCurrentLayer; 839 Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer) { } 840 inline HWCTYPE const * getLayer() const { return mCurrentLayer; } 841 inline HWCTYPE* getLayer() { return mCurrentLayer; } 842 virtual ~Iterable() { } 843private: 844 // returns a copy of ourselves 845 virtual HWComposer::HWCLayer* dup() { 846 return new CONCRETE( static_cast<const CONCRETE&>(*this) ); 847 } 848 virtual status_t setLayer(size_t index) { 849 mCurrentLayer = &mLayerList[index]; 850 return NO_ERROR; 851 } 852}; 853 854/* 855 * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0. 856 * This implements the HWCLayer side of HWCIterableLayer. 857 */ 858class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> { 859 struct hwc_composer_device_1* mHwc; 860public: 861 HWCLayerVersion1(struct hwc_composer_device_1* hwc, hwc_layer_1_t* layer) 862 : Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer), mHwc(hwc) { } 863 864 virtual int32_t getCompositionType() const { 865 return getLayer()->compositionType; 866 } 867 virtual uint32_t getHints() const { 868 return getLayer()->hints; 869 } 870 virtual sp<Fence> getAndResetReleaseFence() { 871 int fd = getLayer()->releaseFenceFd; 872 getLayer()->releaseFenceFd = -1; 873 return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE; 874 } 875 virtual void setAcquireFenceFd(int fenceFd) { 876 getLayer()->acquireFenceFd = fenceFd; 877 } 878 virtual void setPerFrameDefaultState() { 879 //getLayer()->compositionType = HWC_FRAMEBUFFER; 880 } 881 virtual void setPlaneAlpha(uint8_t alpha) { 882 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) { 883 getLayer()->planeAlpha = alpha; 884 } else { 885 if (alpha < 0xFF) { 886 getLayer()->flags |= HWC_SKIP_LAYER; 887 } 888 } 889 } 890 virtual void setDefaultState() { 891 hwc_layer_1_t* const l = getLayer(); 892 l->compositionType = HWC_FRAMEBUFFER; 893 l->hints = 0; 894 l->flags = HWC_SKIP_LAYER; 895 l->handle = 0; 896 l->transform = 0; 897 l->blending = HWC_BLENDING_NONE; 898 l->visibleRegionScreen.numRects = 0; 899 l->visibleRegionScreen.rects = NULL; 900 l->acquireFenceFd = -1; 901 l->releaseFenceFd = -1; 902 l->planeAlpha = 0xFF; 903 } 904 virtual void setSkip(bool skip) { 905 if (skip) { 906 getLayer()->flags |= HWC_SKIP_LAYER; 907 } else { 908 getLayer()->flags &= ~HWC_SKIP_LAYER; 909 } 910 } 911 virtual void setBlending(uint32_t blending) { 912 getLayer()->blending = blending; 913 } 914 virtual void setTransform(uint32_t transform) { 915 getLayer()->transform = transform; 916 } 917 virtual void setFrame(const Rect& frame) { 918 getLayer()->displayFrame = reinterpret_cast<hwc_rect_t const&>(frame); 919 } 920 virtual void setCrop(const FloatRect& crop) { 921 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 922 getLayer()->sourceCropf = reinterpret_cast<hwc_frect_t const&>(crop); 923 } else { 924 /* 925 * Since h/w composer didn't support a flot crop rect before version 1.3, 926 * using integer coordinates instead produces a different output from the GL code in 927 * Layer::drawWithOpenGL(). The difference can be large if the buffer crop to 928 * window size ratio is large and a window crop is defined 929 * (i.e.: if we scale the buffer a lot and we also crop it with a window crop). 930 */ 931 hwc_rect_t& r = getLayer()->sourceCrop; 932 r.left = int(ceilf(crop.left)); 933 r.top = int(ceilf(crop.top)); 934 r.right = int(floorf(crop.right)); 935 r.bottom= int(floorf(crop.bottom)); 936 } 937 } 938 virtual void setVisibleRegionScreen(const Region& reg) { 939 // Region::getSharedBuffer creates a reference to the underlying 940 // SharedBuffer of this Region, this reference is freed 941 // in onDisplayed() 942 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 943 SharedBuffer const* sb = reg.getSharedBuffer(&visibleRegion.numRects); 944 visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(sb->data()); 945 } 946 virtual void setSidebandStream(const sp<NativeHandle>& stream) { 947 ALOG_ASSERT(stream->handle() != NULL); 948 getLayer()->compositionType = HWC_SIDEBAND; 949 getLayer()->sidebandStream = stream->handle(); 950 } 951 virtual void setBuffer(const sp<GraphicBuffer>& buffer) { 952 if (buffer == 0 || buffer->handle == 0) { 953 getLayer()->compositionType = HWC_FRAMEBUFFER; 954 getLayer()->flags |= HWC_SKIP_LAYER; 955 getLayer()->handle = 0; 956 } else { 957 if (getLayer()->compositionType == HWC_SIDEBAND) { 958 // If this was a sideband layer but the stream was removed, reset 959 // it to FRAMEBUFFER. The HWC can change it to OVERLAY in prepare. 960 getLayer()->compositionType = HWC_FRAMEBUFFER; 961 } 962 getLayer()->handle = buffer->handle; 963 } 964 } 965 virtual void onDisplayed() { 966 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 967 SharedBuffer const* sb = SharedBuffer::bufferFromData(visibleRegion.rects); 968 if (sb) { 969 sb->release(); 970 // not technically needed but safer 971 visibleRegion.numRects = 0; 972 visibleRegion.rects = NULL; 973 } 974 975 getLayer()->acquireFenceFd = -1; 976 } 977}; 978 979/* 980 * returns an iterator initialized at a given index in the layer list 981 */ 982HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) { 983 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 984 return LayerListIterator(); 985 } 986 const DisplayData& disp(mDisplayData[id]); 987 if (!mHwc || !disp.list || index > disp.list->numHwLayers) { 988 return LayerListIterator(); 989 } 990 return LayerListIterator(new HWCLayerVersion1(mHwc, disp.list->hwLayers), index); 991} 992 993/* 994 * returns an iterator on the beginning of the layer list 995 */ 996HWComposer::LayerListIterator HWComposer::begin(int32_t id) { 997 return getLayerIterator(id, 0); 998} 999 1000/* 1001 * returns an iterator on the end of the layer list 1002 */ 1003HWComposer::LayerListIterator HWComposer::end(int32_t id) { 1004 size_t numLayers = 0; 1005 if (uint32_t(id) <= 31 && mAllocatedDisplayIDs.hasBit(id)) { 1006 const DisplayData& disp(mDisplayData[id]); 1007 if (mHwc && disp.list) { 1008 numLayers = disp.list->numHwLayers; 1009 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 1010 // with HWC 1.1, the last layer is always the HWC_FRAMEBUFFER_TARGET, 1011 // which we ignore when iterating through the layer list. 1012 ALOGE_IF(!numLayers, "mDisplayData[%d].list->numHwLayers is 0", id); 1013 if (numLayers) { 1014 numLayers--; 1015 } 1016 } 1017 } 1018 } 1019 return getLayerIterator(id, numLayers); 1020} 1021 1022void HWComposer::dump(String8& result) const { 1023 if (mHwc) { 1024 result.appendFormat("Hardware Composer state (version %8x):\n", hwcApiVersion(mHwc)); 1025 result.appendFormat(" mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync); 1026 for (size_t i=0 ; i<mNumDisplays ; i++) { 1027 const DisplayData& disp(mDisplayData[i]); 1028 if (!disp.connected) 1029 continue; 1030 1031 const Vector< sp<Layer> >& visibleLayersSortedByZ = 1032 mFlinger->getLayerSortedByZForHwcDisplay(i); 1033 1034 result.appendFormat( 1035 " Display[%d] : %ux%u, xdpi=%f, ydpi=%f, refresh=%lld\n", 1036 i, disp.width, disp.height, disp.xdpi, disp.ydpi, disp.refresh); 1037 1038 if (disp.list) { 1039 result.appendFormat( 1040 " numHwLayers=%u, flags=%08x\n", 1041 disp.list->numHwLayers, disp.list->flags); 1042 1043 result.append( 1044 " type | handle | hints | flags | tr | blend | format | source crop | frame name \n" 1045 "------------+----------+----------+----------+----+-------+----------+---------------------------------+--------------------------------\n"); 1046 // " __________ | ________ | ________ | ________ | __ | _____ | ________ | [_____._,_____._,_____._,_____._] | [_____,_____,_____,_____] 1047 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 1048 const hwc_layer_1_t&l = disp.list->hwLayers[i]; 1049 int32_t format = -1; 1050 String8 name("unknown"); 1051 1052 if (i < visibleLayersSortedByZ.size()) { 1053 const sp<Layer>& layer(visibleLayersSortedByZ[i]); 1054 const sp<GraphicBuffer>& buffer( 1055 layer->getActiveBuffer()); 1056 if (buffer != NULL) { 1057 format = buffer->getPixelFormat(); 1058 } 1059 name = layer->getName(); 1060 } 1061 1062 int type = l.compositionType; 1063 if (type == HWC_FRAMEBUFFER_TARGET) { 1064 name = "HWC_FRAMEBUFFER_TARGET"; 1065 format = disp.format; 1066 } 1067 1068 static char const* compositionTypeName[] = { 1069 "GLES", 1070 "HWC", 1071 "BACKGROUND", 1072 "FB TARGET", 1073 "UNKNOWN"}; 1074 if (type >= NELEM(compositionTypeName)) 1075 type = NELEM(compositionTypeName) - 1; 1076 1077 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 1078 result.appendFormat( 1079 " %10s | %08x | %08x | %08x | %02x | %05x | %08x | [%7.1f,%7.1f,%7.1f,%7.1f] | [%5d,%5d,%5d,%5d] %s\n", 1080 compositionTypeName[type], 1081 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format, 1082 l.sourceCropf.left, l.sourceCropf.top, l.sourceCropf.right, l.sourceCropf.bottom, 1083 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, 1084 name.string()); 1085 } else { 1086 result.appendFormat( 1087 " %10s | %08x | %08x | %08x | %02x | %05x | %08x | [%7d,%7d,%7d,%7d] | [%5d,%5d,%5d,%5d] %s\n", 1088 compositionTypeName[type], 1089 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format, 1090 l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom, 1091 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, 1092 name.string()); 1093 } 1094 } 1095 } 1096 } 1097 } 1098 1099 if (mHwc && mHwc->dump) { 1100 const size_t SIZE = 4096; 1101 char buffer[SIZE]; 1102 mHwc->dump(mHwc, buffer, SIZE); 1103 result.append(buffer); 1104 } 1105} 1106 1107// --------------------------------------------------------------------------- 1108 1109HWComposer::VSyncThread::VSyncThread(HWComposer& hwc) 1110 : mHwc(hwc), mEnabled(false), 1111 mNextFakeVSync(0), 1112 mRefreshPeriod(hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY)) 1113{ 1114} 1115 1116void HWComposer::VSyncThread::setEnabled(bool enabled) { 1117 Mutex::Autolock _l(mLock); 1118 if (mEnabled != enabled) { 1119 mEnabled = enabled; 1120 mCondition.signal(); 1121 } 1122} 1123 1124void HWComposer::VSyncThread::onFirstRef() { 1125 run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE); 1126} 1127 1128bool HWComposer::VSyncThread::threadLoop() { 1129 { // scope for lock 1130 Mutex::Autolock _l(mLock); 1131 while (!mEnabled) { 1132 mCondition.wait(mLock); 1133 } 1134 } 1135 1136 const nsecs_t period = mRefreshPeriod; 1137 const nsecs_t now = systemTime(CLOCK_MONOTONIC); 1138 nsecs_t next_vsync = mNextFakeVSync; 1139 nsecs_t sleep = next_vsync - now; 1140 if (sleep < 0) { 1141 // we missed, find where the next vsync should be 1142 sleep = (period - ((now - next_vsync) % period)); 1143 next_vsync = now + sleep; 1144 } 1145 mNextFakeVSync = next_vsync + period; 1146 1147 struct timespec spec; 1148 spec.tv_sec = next_vsync / 1000000000; 1149 spec.tv_nsec = next_vsync % 1000000000; 1150 1151 int err; 1152 do { 1153 err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL); 1154 } while (err<0 && errno == EINTR); 1155 1156 if (err == 0) { 1157 mHwc.mEventHandler.onVSyncReceived(0, next_vsync); 1158 } 1159 1160 return true; 1161} 1162 1163HWComposer::DisplayData::DisplayData() 1164: width(0), height(0), format(HAL_PIXEL_FORMAT_RGBA_8888), 1165 xdpi(0.0f), ydpi(0.0f), 1166 refresh(0), 1167 connected(false), 1168 hasFbComp(false), hasOvComp(false), 1169 capacity(0), list(NULL), 1170 framebufferTarget(NULL), fbTargetHandle(0), 1171 lastRetireFence(Fence::NO_FENCE), lastDisplayFence(Fence::NO_FENCE), 1172 outbufHandle(NULL), outbufAcquireFence(Fence::NO_FENCE), 1173 events(0) 1174{} 1175 1176HWComposer::DisplayData::~DisplayData() { 1177 free(list); 1178} 1179 1180// --------------------------------------------------------------------------- 1181}; // namespace android 1182