HWComposer.cpp revision 41d67d7ab4da1c393497a620a116a854b3c618e7
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 <inttypes.h> 20#include <math.h> 21#include <stdint.h> 22#include <stdio.h> 23#include <stdlib.h> 24#include <string.h> 25#include <sys/types.h> 26 27#include <utils/Errors.h> 28#include <utils/misc.h> 29#include <utils/NativeHandle.h> 30#include <utils/String8.h> 31#include <utils/Thread.h> 32#include <utils/Trace.h> 33#include <utils/Vector.h> 34 35#include <ui/GraphicBuffer.h> 36 37#include <hardware/hardware.h> 38#include <hardware/hwcomposer.h> 39 40#include <android/configuration.h> 41 42#include <cutils/log.h> 43#include <cutils/properties.h> 44 45#include "HWComposer.h" 46 47#include "../Layer.h" // needed only for debugging 48#include "../SurfaceFlinger.h" 49 50namespace android { 51 52#define MIN_HWC_HEADER_VERSION HWC_HEADER_VERSION 53 54static uint32_t hwcApiVersion(const hwc_composer_device_1_t* hwc) { 55 uint32_t hwcVersion = hwc->common.version; 56 return hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK; 57} 58 59static uint32_t hwcHeaderVersion(const hwc_composer_device_1_t* hwc) { 60 uint32_t hwcVersion = hwc->common.version; 61 return hwcVersion & HARDWARE_API_VERSION_2_HEADER_MASK; 62} 63 64static bool hwcHasApiVersion(const hwc_composer_device_1_t* hwc, 65 uint32_t version) { 66 return hwcApiVersion(hwc) >= (version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK); 67} 68 69// --------------------------------------------------------------------------- 70 71struct HWComposer::cb_context { 72 struct callbacks : public hwc_procs_t { 73 // these are here to facilitate the transition when adding 74 // new callbacks (an implementation can check for NULL before 75 // calling a new callback). 76 void (*zero[4])(void); 77 }; 78 callbacks procs; 79 HWComposer* hwc; 80}; 81 82// --------------------------------------------------------------------------- 83 84HWComposer::HWComposer( 85 const sp<SurfaceFlinger>& flinger, 86 EventHandler& handler) 87 : mFlinger(flinger), 88 mFbDev(0), mHwc(0), mNumDisplays(1), 89 mCBContext(new cb_context), 90 mEventHandler(handler), 91 mDebugForceFakeVSync(false) 92{ 93 for (size_t i =0 ; i<MAX_HWC_DISPLAYS ; i++) { 94 mLists[i] = 0; 95 } 96 97 for (size_t i=0 ; i<HWC_NUM_PHYSICAL_DISPLAY_TYPES ; i++) { 98 mLastHwVSync[i] = 0; 99 mVSyncCounts[i] = 0; 100 } 101 102 char value[PROPERTY_VALUE_MAX]; 103 property_get("debug.sf.no_hw_vsync", value, "0"); 104 mDebugForceFakeVSync = atoi(value); 105 106 bool needVSyncThread = true; 107 108 // Note: some devices may insist that the FB HAL be opened before HWC. 109 int fberr = loadFbHalModule(); 110 loadHwcModule(); 111 112 if (mFbDev && mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 113 // close FB HAL if we don't needed it. 114 // FIXME: this is temporary until we're not forced to open FB HAL 115 // before HWC. 116 framebuffer_close(mFbDev); 117 mFbDev = NULL; 118 } 119 120 // If we have no HWC, or a pre-1.1 HWC, an FB dev is mandatory. 121 if ((!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 122 && !mFbDev) { 123 ALOGE("ERROR: failed to open framebuffer (%s), aborting", 124 strerror(-fberr)); 125 abort(); 126 } 127 128 // these display IDs are always reserved 129 for (size_t i=0 ; i<NUM_BUILTIN_DISPLAYS ; i++) { 130 mAllocatedDisplayIDs.markBit(i); 131 } 132 133 if (mHwc) { 134 ALOGI("Using %s version %u.%u", HWC_HARDWARE_COMPOSER, 135 (hwcApiVersion(mHwc) >> 24) & 0xff, 136 (hwcApiVersion(mHwc) >> 16) & 0xff); 137 if (mHwc->registerProcs) { 138 mCBContext->hwc = this; 139 mCBContext->procs.invalidate = &hook_invalidate; 140 mCBContext->procs.vsync = &hook_vsync; 141 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 142 mCBContext->procs.hotplug = &hook_hotplug; 143 else 144 mCBContext->procs.hotplug = NULL; 145 memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero)); 146 mHwc->registerProcs(mHwc, &mCBContext->procs); 147 } 148 149 // don't need a vsync thread if we have a hardware composer 150 needVSyncThread = false; 151 // always turn vsync off when we start 152 eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); 153 154 // the number of displays we actually have depends on the 155 // hw composer version 156 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 157 // 1.3 adds support for virtual displays 158 mNumDisplays = MAX_HWC_DISPLAYS; 159 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 160 // 1.1 adds support for multiple displays 161 mNumDisplays = NUM_BUILTIN_DISPLAYS; 162 } else { 163 mNumDisplays = 1; 164 } 165 } 166 167 if (mFbDev) { 168 ALOG_ASSERT(!(mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)), 169 "should only have fbdev if no hwc or hwc is 1.0"); 170 171 DisplayData& disp(mDisplayData[HWC_DISPLAY_PRIMARY]); 172 disp.connected = true; 173 disp.width = mFbDev->width; 174 disp.height = mFbDev->height; 175 disp.format = mFbDev->format; 176 disp.xdpi = mFbDev->xdpi; 177 disp.ydpi = mFbDev->ydpi; 178 if (disp.refresh == 0) { 179 disp.refresh = nsecs_t(1e9 / mFbDev->fps); 180 ALOGW("getting VSYNC period from fb HAL: %lld", disp.refresh); 181 } 182 if (disp.refresh == 0) { 183 disp.refresh = nsecs_t(1e9 / 60.0); 184 ALOGW("getting VSYNC period from thin air: %lld", 185 mDisplayData[HWC_DISPLAY_PRIMARY].refresh); 186 } 187 } else if (mHwc) { 188 // here we're guaranteed to have at least HWC 1.1 189 for (size_t i =0 ; i<NUM_BUILTIN_DISPLAYS ; i++) { 190 queryDisplayProperties(i); 191 } 192 } 193 194 if (needVSyncThread) { 195 // we don't have VSYNC support, we need to fake it 196 mVSyncThread = new VSyncThread(*this); 197 } 198} 199 200HWComposer::~HWComposer() { 201 if (mHwc) { 202 eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); 203 } 204 if (mVSyncThread != NULL) { 205 mVSyncThread->requestExitAndWait(); 206 } 207 if (mHwc) { 208 hwc_close_1(mHwc); 209 } 210 if (mFbDev) { 211 framebuffer_close(mFbDev); 212 } 213 delete mCBContext; 214} 215 216// Load and prepare the hardware composer module. Sets mHwc. 217void HWComposer::loadHwcModule() 218{ 219 hw_module_t const* module; 220 221 if (hw_get_module(HWC_HARDWARE_MODULE_ID, &module) != 0) { 222 ALOGE("%s module not found", HWC_HARDWARE_MODULE_ID); 223 return; 224 } 225 226 int err = hwc_open_1(module, &mHwc); 227 if (err) { 228 ALOGE("%s device failed to initialize (%s)", 229 HWC_HARDWARE_COMPOSER, strerror(-err)); 230 return; 231 } 232 233 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_0) || 234 hwcHeaderVersion(mHwc) < MIN_HWC_HEADER_VERSION || 235 hwcHeaderVersion(mHwc) > HWC_HEADER_VERSION) { 236 ALOGE("%s device version %#x unsupported, will not be used", 237 HWC_HARDWARE_COMPOSER, mHwc->common.version); 238 hwc_close_1(mHwc); 239 mHwc = NULL; 240 return; 241 } 242} 243 244// Load and prepare the FB HAL, which uses the gralloc module. Sets mFbDev. 245int HWComposer::loadFbHalModule() 246{ 247 hw_module_t const* module; 248 249 int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module); 250 if (err != 0) { 251 ALOGE("%s module not found", GRALLOC_HARDWARE_MODULE_ID); 252 return err; 253 } 254 255 return framebuffer_open(module, &mFbDev); 256} 257 258status_t HWComposer::initCheck() const { 259 return mHwc ? NO_ERROR : NO_INIT; 260} 261 262void HWComposer::hook_invalidate(const struct hwc_procs* procs) { 263 cb_context* ctx = reinterpret_cast<cb_context*>( 264 const_cast<hwc_procs_t*>(procs)); 265 ctx->hwc->invalidate(); 266} 267 268void HWComposer::hook_vsync(const struct hwc_procs* procs, int disp, 269 int64_t timestamp) { 270 cb_context* ctx = reinterpret_cast<cb_context*>( 271 const_cast<hwc_procs_t*>(procs)); 272 ctx->hwc->vsync(disp, timestamp); 273} 274 275void HWComposer::hook_hotplug(const struct hwc_procs* procs, int disp, 276 int connected) { 277 cb_context* ctx = reinterpret_cast<cb_context*>( 278 const_cast<hwc_procs_t*>(procs)); 279 ctx->hwc->hotplug(disp, connected); 280} 281 282void HWComposer::invalidate() { 283 mFlinger->repaintEverything(); 284} 285 286void HWComposer::vsync(int disp, int64_t timestamp) { 287 if (uint32_t(disp) < HWC_NUM_PHYSICAL_DISPLAY_TYPES) { 288 { 289 Mutex::Autolock _l(mLock); 290 291 // There have been reports of HWCs that signal several vsync events 292 // with the same timestamp when turning the display off and on. This 293 // is a bug in the HWC implementation, but filter the extra events 294 // out here so they don't cause havoc downstream. 295 if (timestamp == mLastHwVSync[disp]) { 296 ALOGW("Ignoring duplicate VSYNC event from HWC (t=%lld)", 297 timestamp); 298 return; 299 } 300 301 mLastHwVSync[disp] = timestamp; 302 } 303 304 char tag[16]; 305 snprintf(tag, sizeof(tag), "HW_VSYNC_%1u", disp); 306 ATRACE_INT(tag, ++mVSyncCounts[disp] & 1); 307 308 mEventHandler.onVSyncReceived(disp, timestamp); 309 } 310} 311 312void HWComposer::hotplug(int disp, int connected) { 313 if (disp == HWC_DISPLAY_PRIMARY || disp >= VIRTUAL_DISPLAY_ID_BASE) { 314 ALOGE("hotplug event received for invalid display: disp=%d connected=%d", 315 disp, connected); 316 return; 317 } 318 queryDisplayProperties(disp); 319 mEventHandler.onHotplugReceived(disp, bool(connected)); 320} 321 322static float getDefaultDensity(uint32_t height) { 323 if (height >= 1080) return ACONFIGURATION_DENSITY_XHIGH; 324 else return ACONFIGURATION_DENSITY_TV; 325} 326 327static const uint32_t DISPLAY_ATTRIBUTES[] = { 328 HWC_DISPLAY_VSYNC_PERIOD, 329 HWC_DISPLAY_WIDTH, 330 HWC_DISPLAY_HEIGHT, 331 HWC_DISPLAY_DPI_X, 332 HWC_DISPLAY_DPI_Y, 333 HWC_DISPLAY_NO_ATTRIBUTE, 334}; 335#define NUM_DISPLAY_ATTRIBUTES (sizeof(DISPLAY_ATTRIBUTES) / sizeof(DISPLAY_ATTRIBUTES)[0]) 336 337status_t HWComposer::queryDisplayProperties(int disp) { 338 339 LOG_ALWAYS_FATAL_IF(!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); 340 341 // use zero as default value for unspecified attributes 342 int32_t values[NUM_DISPLAY_ATTRIBUTES - 1]; 343 memset(values, 0, sizeof(values)); 344 345 uint32_t config; 346 size_t numConfigs = 1; 347 status_t err = mHwc->getDisplayConfigs(mHwc, disp, &config, &numConfigs); 348 if (err != NO_ERROR) { 349 // this can happen if an unpluggable display is not connected 350 mDisplayData[disp].connected = false; 351 return err; 352 } 353 354 err = mHwc->getDisplayAttributes(mHwc, disp, config, DISPLAY_ATTRIBUTES, values); 355 if (err != NO_ERROR) { 356 // we can't get this display's info. turn it off. 357 mDisplayData[disp].connected = false; 358 return err; 359 } 360 361 int32_t w = 0, h = 0; 362 for (size_t i = 0; i < NUM_DISPLAY_ATTRIBUTES - 1; i++) { 363 switch (DISPLAY_ATTRIBUTES[i]) { 364 case HWC_DISPLAY_VSYNC_PERIOD: 365 mDisplayData[disp].refresh = nsecs_t(values[i]); 366 break; 367 case HWC_DISPLAY_WIDTH: 368 mDisplayData[disp].width = values[i]; 369 break; 370 case HWC_DISPLAY_HEIGHT: 371 mDisplayData[disp].height = values[i]; 372 break; 373 case HWC_DISPLAY_DPI_X: 374 mDisplayData[disp].xdpi = values[i] / 1000.0f; 375 break; 376 case HWC_DISPLAY_DPI_Y: 377 mDisplayData[disp].ydpi = values[i] / 1000.0f; 378 break; 379 default: 380 ALOG_ASSERT(false, "unknown display attribute[%d] %#x", 381 i, DISPLAY_ATTRIBUTES[i]); 382 break; 383 } 384 } 385 386 // FIXME: what should we set the format to? 387 mDisplayData[disp].format = HAL_PIXEL_FORMAT_RGBA_8888; 388 mDisplayData[disp].connected = true; 389 if (mDisplayData[disp].xdpi == 0.0f || mDisplayData[disp].ydpi == 0.0f) { 390 float dpi = getDefaultDensity(h); 391 mDisplayData[disp].xdpi = dpi; 392 mDisplayData[disp].ydpi = dpi; 393 } 394 return NO_ERROR; 395} 396 397status_t HWComposer::setVirtualDisplayProperties(int32_t id, 398 uint32_t w, uint32_t h, uint32_t format) { 399 if (id < VIRTUAL_DISPLAY_ID_BASE || id >= int32_t(mNumDisplays) || 400 !mAllocatedDisplayIDs.hasBit(id)) { 401 return BAD_INDEX; 402 } 403 mDisplayData[id].width = w; 404 mDisplayData[id].height = h; 405 mDisplayData[id].format = format; 406 mDisplayData[id].xdpi = mDisplayData[id].ydpi = getDefaultDensity(h); 407 return NO_ERROR; 408} 409 410int32_t HWComposer::allocateDisplayId() { 411 if (mAllocatedDisplayIDs.count() >= mNumDisplays) { 412 return NO_MEMORY; 413 } 414 int32_t id = mAllocatedDisplayIDs.firstUnmarkedBit(); 415 mAllocatedDisplayIDs.markBit(id); 416 mDisplayData[id].connected = true; 417 return id; 418} 419 420status_t HWComposer::freeDisplayId(int32_t id) { 421 if (id < NUM_BUILTIN_DISPLAYS) { 422 // cannot free the reserved IDs 423 return BAD_VALUE; 424 } 425 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 426 return BAD_INDEX; 427 } 428 mAllocatedDisplayIDs.clearBit(id); 429 mDisplayData[id].connected = false; 430 return NO_ERROR; 431} 432 433nsecs_t HWComposer::getRefreshPeriod(int disp) const { 434 return mDisplayData[disp].refresh; 435} 436 437nsecs_t HWComposer::getRefreshTimestamp(int disp) const { 438 // this returns the last refresh timestamp. 439 // if the last one is not available, we estimate it based on 440 // the refresh period and whatever closest timestamp we have. 441 Mutex::Autolock _l(mLock); 442 nsecs_t now = systemTime(CLOCK_MONOTONIC); 443 return now - ((now - mLastHwVSync[disp]) % mDisplayData[disp].refresh); 444} 445 446sp<Fence> HWComposer::getDisplayFence(int disp) const { 447 return mDisplayData[disp].lastDisplayFence; 448} 449 450uint32_t HWComposer::getWidth(int disp) const { 451 return mDisplayData[disp].width; 452} 453 454uint32_t HWComposer::getHeight(int disp) const { 455 return mDisplayData[disp].height; 456} 457 458uint32_t HWComposer::getFormat(int disp) const { 459 if (uint32_t(disp)>31 || !mAllocatedDisplayIDs.hasBit(disp)) { 460 return HAL_PIXEL_FORMAT_RGBA_8888; 461 } else { 462 return mDisplayData[disp].format; 463 } 464} 465 466float HWComposer::getDpiX(int disp) const { 467 return mDisplayData[disp].xdpi; 468} 469 470float HWComposer::getDpiY(int disp) const { 471 return mDisplayData[disp].ydpi; 472} 473 474bool HWComposer::isConnected(int disp) const { 475 return mDisplayData[disp].connected; 476} 477 478void HWComposer::eventControl(int disp, int event, int enabled) { 479 if (uint32_t(disp)>31 || !mAllocatedDisplayIDs.hasBit(disp)) { 480 ALOGD("eventControl ignoring event %d on unallocated disp %d (en=%d)", 481 event, disp, enabled); 482 return; 483 } 484 if (event != EVENT_VSYNC) { 485 ALOGW("eventControl got unexpected event %d (disp=%d en=%d)", 486 event, disp, enabled); 487 return; 488 } 489 status_t err = NO_ERROR; 490 if (mHwc && !mDebugForceFakeVSync) { 491 // NOTE: we use our own internal lock here because we have to call 492 // into the HWC with the lock held, and we want to make sure 493 // that even if HWC blocks (which it shouldn't), it won't 494 // affect other threads. 495 Mutex::Autolock _l(mEventControlLock); 496 const int32_t eventBit = 1UL << event; 497 const int32_t newValue = enabled ? eventBit : 0; 498 const int32_t oldValue = mDisplayData[disp].events & eventBit; 499 if (newValue != oldValue) { 500 ATRACE_CALL(); 501 err = mHwc->eventControl(mHwc, disp, event, enabled); 502 if (!err) { 503 int32_t& events(mDisplayData[disp].events); 504 events = (events & ~eventBit) | newValue; 505 } 506 } 507 // error here should not happen -- not sure what we should 508 // do if it does. 509 ALOGE_IF(err, "eventControl(%d, %d) failed %s", 510 event, enabled, strerror(-err)); 511 } 512 513 if (err == NO_ERROR && mVSyncThread != NULL) { 514 mVSyncThread->setEnabled(enabled); 515 } 516} 517 518status_t HWComposer::createWorkList(int32_t id, size_t numLayers) { 519 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 520 return BAD_INDEX; 521 } 522 523 if (mHwc) { 524 DisplayData& disp(mDisplayData[id]); 525 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 526 // we need space for the HWC_FRAMEBUFFER_TARGET 527 numLayers++; 528 } 529 if (disp.capacity < numLayers || disp.list == NULL) { 530 size_t size = sizeof(hwc_display_contents_1_t) 531 + numLayers * sizeof(hwc_layer_1_t); 532 free(disp.list); 533 disp.list = (hwc_display_contents_1_t*)malloc(size); 534 disp.capacity = numLayers; 535 } 536 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 537 disp.framebufferTarget = &disp.list->hwLayers[numLayers - 1]; 538 memset(disp.framebufferTarget, 0, sizeof(hwc_layer_1_t)); 539 const hwc_rect_t r = { 0, 0, (int) disp.width, (int) disp.height }; 540 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; 541 disp.framebufferTarget->hints = 0; 542 disp.framebufferTarget->flags = 0; 543 disp.framebufferTarget->handle = disp.fbTargetHandle; 544 disp.framebufferTarget->transform = 0; 545 disp.framebufferTarget->blending = HWC_BLENDING_PREMULT; 546 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 547 disp.framebufferTarget->sourceCropf.left = 0; 548 disp.framebufferTarget->sourceCropf.top = 0; 549 disp.framebufferTarget->sourceCropf.right = disp.width; 550 disp.framebufferTarget->sourceCropf.bottom = disp.height; 551 } else { 552 disp.framebufferTarget->sourceCrop = r; 553 } 554 disp.framebufferTarget->displayFrame = r; 555 disp.framebufferTarget->visibleRegionScreen.numRects = 1; 556 disp.framebufferTarget->visibleRegionScreen.rects = 557 &disp.framebufferTarget->displayFrame; 558 disp.framebufferTarget->acquireFenceFd = -1; 559 disp.framebufferTarget->releaseFenceFd = -1; 560 disp.framebufferTarget->planeAlpha = 0xFF; 561 } 562 disp.list->retireFenceFd = -1; 563 disp.list->flags = HWC_GEOMETRY_CHANGED; 564 disp.list->numHwLayers = numLayers; 565 } 566 return NO_ERROR; 567} 568 569status_t HWComposer::setFramebufferTarget(int32_t id, 570 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buf) { 571 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 572 return BAD_INDEX; 573 } 574 DisplayData& disp(mDisplayData[id]); 575 if (!disp.framebufferTarget) { 576 // this should never happen, but apparently eglCreateWindowSurface() 577 // triggers a Surface::queueBuffer() on some 578 // devices (!?) -- log and ignore. 579 ALOGE("HWComposer: framebufferTarget is null"); 580 return NO_ERROR; 581 } 582 583 int acquireFenceFd = -1; 584 if (acquireFence->isValid()) { 585 acquireFenceFd = acquireFence->dup(); 586 } 587 588 // ALOGD("fbPost: handle=%p, fence=%d", buf->handle, acquireFenceFd); 589 disp.fbTargetHandle = buf->handle; 590 disp.framebufferTarget->handle = disp.fbTargetHandle; 591 disp.framebufferTarget->acquireFenceFd = acquireFenceFd; 592 return NO_ERROR; 593} 594 595status_t HWComposer::prepare() { 596 for (size_t i=0 ; i<mNumDisplays ; i++) { 597 DisplayData& disp(mDisplayData[i]); 598 if (disp.framebufferTarget) { 599 // make sure to reset the type to HWC_FRAMEBUFFER_TARGET 600 // DO NOT reset the handle field to NULL, because it's possible 601 // that we have nothing to redraw (eg: eglSwapBuffers() not called) 602 // in which case, we should continue to use the same buffer. 603 LOG_FATAL_IF(disp.list == NULL); 604 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; 605 } 606 if (!disp.connected && disp.list != NULL) { 607 ALOGW("WARNING: disp %d: connected, non-null list, layers=%d", 608 i, disp.list->numHwLayers); 609 } 610 mLists[i] = disp.list; 611 if (mLists[i]) { 612 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 613 mLists[i]->outbuf = disp.outbufHandle; 614 mLists[i]->outbufAcquireFenceFd = -1; 615 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 616 // garbage data to catch improper use 617 mLists[i]->dpy = (hwc_display_t)0xDEADBEEF; 618 mLists[i]->sur = (hwc_surface_t)0xDEADBEEF; 619 } else { 620 mLists[i]->dpy = EGL_NO_DISPLAY; 621 mLists[i]->sur = EGL_NO_SURFACE; 622 } 623 } 624 } 625 626 int err = mHwc->prepare(mHwc, mNumDisplays, mLists); 627 ALOGE_IF(err, "HWComposer: prepare failed (%s)", strerror(-err)); 628 629 if (err == NO_ERROR) { 630 // here we're just making sure that "skip" layers are set 631 // to HWC_FRAMEBUFFER and we're also counting how many layers 632 // we have of each type. 633 // 634 // If there are no window layers, we treat the display has having FB 635 // composition, because SurfaceFlinger will use GLES to draw the 636 // wormhole region. 637 for (size_t i=0 ; i<mNumDisplays ; i++) { 638 DisplayData& disp(mDisplayData[i]); 639 disp.hasFbComp = false; 640 disp.hasOvComp = false; 641 if (disp.list) { 642 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 643 hwc_layer_1_t& l = disp.list->hwLayers[i]; 644 645 //ALOGD("prepare: %d, type=%d, handle=%p", 646 // i, l.compositionType, l.handle); 647 648 if (l.flags & HWC_SKIP_LAYER) { 649 l.compositionType = HWC_FRAMEBUFFER; 650 } 651 if (l.compositionType == HWC_FRAMEBUFFER) { 652 disp.hasFbComp = true; 653 } 654 if (l.compositionType == HWC_OVERLAY) { 655 disp.hasOvComp = true; 656 } 657 } 658 if (disp.list->numHwLayers == (disp.framebufferTarget ? 1 : 0)) { 659 disp.hasFbComp = true; 660 } 661 } else { 662 disp.hasFbComp = true; 663 } 664 } 665 } 666 return (status_t)err; 667} 668 669bool HWComposer::hasHwcComposition(int32_t id) const { 670 if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 671 return false; 672 return mDisplayData[id].hasOvComp; 673} 674 675bool HWComposer::hasGlesComposition(int32_t id) const { 676 if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 677 return true; 678 return mDisplayData[id].hasFbComp; 679} 680 681sp<Fence> HWComposer::getAndResetReleaseFence(int32_t id) { 682 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 683 return Fence::NO_FENCE; 684 685 int fd = INVALID_OPERATION; 686 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 687 const DisplayData& disp(mDisplayData[id]); 688 if (disp.framebufferTarget) { 689 fd = disp.framebufferTarget->releaseFenceFd; 690 disp.framebufferTarget->acquireFenceFd = -1; 691 disp.framebufferTarget->releaseFenceFd = -1; 692 } 693 } 694 return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE; 695} 696 697status_t HWComposer::commit() { 698 int err = NO_ERROR; 699 if (mHwc) { 700 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 701 // On version 1.0, the OpenGL ES target surface is communicated 702 // by the (dpy, sur) fields and we are guaranteed to have only 703 // a single display. 704 mLists[0]->dpy = eglGetCurrentDisplay(); 705 mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW); 706 } 707 708 for (size_t i=VIRTUAL_DISPLAY_ID_BASE; i<mNumDisplays; i++) { 709 DisplayData& disp(mDisplayData[i]); 710 if (disp.outbufHandle) { 711 mLists[i]->outbuf = disp.outbufHandle; 712 mLists[i]->outbufAcquireFenceFd = 713 disp.outbufAcquireFence->dup(); 714 } 715 } 716 717 err = mHwc->set(mHwc, mNumDisplays, mLists); 718 719 for (size_t i=0 ; i<mNumDisplays ; i++) { 720 DisplayData& disp(mDisplayData[i]); 721 disp.lastDisplayFence = disp.lastRetireFence; 722 disp.lastRetireFence = Fence::NO_FENCE; 723 if (disp.list) { 724 if (disp.list->retireFenceFd != -1) { 725 disp.lastRetireFence = new Fence(disp.list->retireFenceFd); 726 disp.list->retireFenceFd = -1; 727 } 728 disp.list->flags &= ~HWC_GEOMETRY_CHANGED; 729 } 730 } 731 } 732 return (status_t)err; 733} 734 735status_t HWComposer::release(int disp) { 736 LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE); 737 if (mHwc) { 738 eventControl(disp, HWC_EVENT_VSYNC, 0); 739 return (status_t)mHwc->blank(mHwc, disp, 1); 740 } 741 return NO_ERROR; 742} 743 744status_t HWComposer::acquire(int disp) { 745 LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE); 746 if (mHwc) { 747 return (status_t)mHwc->blank(mHwc, disp, 0); 748 } 749 return NO_ERROR; 750} 751 752void HWComposer::disconnectDisplay(int disp) { 753 LOG_ALWAYS_FATAL_IF(disp < 0 || disp == HWC_DISPLAY_PRIMARY); 754 DisplayData& dd(mDisplayData[disp]); 755 free(dd.list); 756 dd.list = NULL; 757 dd.framebufferTarget = NULL; // points into dd.list 758 dd.fbTargetHandle = NULL; 759 dd.outbufHandle = NULL; 760 dd.lastRetireFence = Fence::NO_FENCE; 761 dd.lastDisplayFence = Fence::NO_FENCE; 762 dd.outbufAcquireFence = Fence::NO_FENCE; 763} 764 765int HWComposer::getVisualID() const { 766 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 767 // FIXME: temporary hack until HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED 768 // is supported by the implementation. we can only be in this case 769 // if we have HWC 1.1 770 return HAL_PIXEL_FORMAT_RGBA_8888; 771 //return HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED; 772 } else { 773 return mFbDev->format; 774 } 775} 776 777bool HWComposer::supportsFramebufferTarget() const { 778 return (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); 779} 780 781int HWComposer::fbPost(int32_t id, 782 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buffer) { 783 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 784 return setFramebufferTarget(id, acquireFence, buffer); 785 } else { 786 acquireFence->waitForever("HWComposer::fbPost"); 787 return mFbDev->post(mFbDev, buffer->handle); 788 } 789} 790 791int HWComposer::fbCompositionComplete() { 792 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 793 return NO_ERROR; 794 795 if (mFbDev->compositionComplete) { 796 return mFbDev->compositionComplete(mFbDev); 797 } else { 798 return INVALID_OPERATION; 799 } 800} 801 802void HWComposer::fbDump(String8& result) { 803 if (mFbDev && mFbDev->common.version >= 1 && mFbDev->dump) { 804 const size_t SIZE = 4096; 805 char buffer[SIZE]; 806 mFbDev->dump(mFbDev, buffer, SIZE); 807 result.append(buffer); 808 } 809} 810 811status_t HWComposer::setOutputBuffer(int32_t id, const sp<Fence>& acquireFence, 812 const sp<GraphicBuffer>& buf) { 813 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 814 return BAD_INDEX; 815 if (id < VIRTUAL_DISPLAY_ID_BASE) 816 return INVALID_OPERATION; 817 818 DisplayData& disp(mDisplayData[id]); 819 disp.outbufHandle = buf->handle; 820 disp.outbufAcquireFence = acquireFence; 821 return NO_ERROR; 822} 823 824sp<Fence> HWComposer::getLastRetireFence(int32_t id) const { 825 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 826 return Fence::NO_FENCE; 827 return mDisplayData[id].lastRetireFence; 828} 829 830/* 831 * Helper template to implement a concrete HWCLayer 832 * This holds the pointer to the concrete hwc layer type 833 * and implements the "iterable" side of HWCLayer. 834 */ 835template<typename CONCRETE, typename HWCTYPE> 836class Iterable : public HWComposer::HWCLayer { 837protected: 838 HWCTYPE* const mLayerList; 839 HWCTYPE* mCurrentLayer; 840 Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer) { } 841 inline HWCTYPE const * getLayer() const { return mCurrentLayer; } 842 inline HWCTYPE* getLayer() { return mCurrentLayer; } 843 virtual ~Iterable() { } 844private: 845 // returns a copy of ourselves 846 virtual HWComposer::HWCLayer* dup() { 847 return new CONCRETE( static_cast<const CONCRETE&>(*this) ); 848 } 849 virtual status_t setLayer(size_t index) { 850 mCurrentLayer = &mLayerList[index]; 851 return NO_ERROR; 852 } 853}; 854 855/* 856 * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0. 857 * This implements the HWCLayer side of HWCIterableLayer. 858 */ 859class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> { 860 struct hwc_composer_device_1* mHwc; 861public: 862 HWCLayerVersion1(struct hwc_composer_device_1* hwc, hwc_layer_1_t* layer) 863 : Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer), mHwc(hwc) { } 864 865 virtual int32_t getCompositionType() const { 866 return getLayer()->compositionType; 867 } 868 virtual uint32_t getHints() const { 869 return getLayer()->hints; 870 } 871 virtual sp<Fence> getAndResetReleaseFence() { 872 int fd = getLayer()->releaseFenceFd; 873 getLayer()->releaseFenceFd = -1; 874 return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE; 875 } 876 virtual void setAcquireFenceFd(int fenceFd) { 877 getLayer()->acquireFenceFd = fenceFd; 878 } 879 virtual void setPerFrameDefaultState() { 880 //getLayer()->compositionType = HWC_FRAMEBUFFER; 881 } 882 virtual void setPlaneAlpha(uint8_t alpha) { 883 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) { 884 getLayer()->planeAlpha = alpha; 885 } else { 886 if (alpha < 0xFF) { 887 getLayer()->flags |= HWC_SKIP_LAYER; 888 } 889 } 890 } 891 virtual void setDefaultState() { 892 hwc_layer_1_t* const l = getLayer(); 893 l->compositionType = HWC_FRAMEBUFFER; 894 l->hints = 0; 895 l->flags = HWC_SKIP_LAYER; 896 l->handle = 0; 897 l->transform = 0; 898 l->blending = HWC_BLENDING_NONE; 899 l->visibleRegionScreen.numRects = 0; 900 l->visibleRegionScreen.rects = NULL; 901 l->acquireFenceFd = -1; 902 l->releaseFenceFd = -1; 903 l->planeAlpha = 0xFF; 904 } 905 virtual void setSkip(bool skip) { 906 if (skip) { 907 getLayer()->flags |= HWC_SKIP_LAYER; 908 } else { 909 getLayer()->flags &= ~HWC_SKIP_LAYER; 910 } 911 } 912 virtual void setBlending(uint32_t blending) { 913 getLayer()->blending = blending; 914 } 915 virtual void setTransform(uint32_t transform) { 916 getLayer()->transform = transform; 917 } 918 virtual void setFrame(const Rect& frame) { 919 getLayer()->displayFrame = reinterpret_cast<hwc_rect_t const&>(frame); 920 } 921 virtual void setCrop(const FloatRect& crop) { 922 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 923 getLayer()->sourceCropf = reinterpret_cast<hwc_frect_t const&>(crop); 924 } else { 925 /* 926 * Since h/w composer didn't support a flot crop rect before version 1.3, 927 * using integer coordinates instead produces a different output from the GL code in 928 * Layer::drawWithOpenGL(). The difference can be large if the buffer crop to 929 * window size ratio is large and a window crop is defined 930 * (i.e.: if we scale the buffer a lot and we also crop it with a window crop). 931 */ 932 hwc_rect_t& r = getLayer()->sourceCrop; 933 r.left = int(ceilf(crop.left)); 934 r.top = int(ceilf(crop.top)); 935 r.right = int(floorf(crop.right)); 936 r.bottom= int(floorf(crop.bottom)); 937 } 938 } 939 virtual void setVisibleRegionScreen(const Region& reg) { 940 // Region::getSharedBuffer creates a reference to the underlying 941 // SharedBuffer of this Region, this reference is freed 942 // in onDisplayed() 943 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 944 SharedBuffer const* sb = reg.getSharedBuffer(&visibleRegion.numRects); 945 visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(sb->data()); 946 } 947 virtual void setSidebandStream(const sp<NativeHandle>& stream) { 948 ALOG_ASSERT(stream->handle() != NULL); 949 getLayer()->compositionType = HWC_SIDEBAND; 950 getLayer()->sidebandStream = stream->handle(); 951 } 952 virtual void setBuffer(const sp<GraphicBuffer>& buffer) { 953 if (buffer == 0 || buffer->handle == 0) { 954 getLayer()->compositionType = HWC_FRAMEBUFFER; 955 getLayer()->flags |= HWC_SKIP_LAYER; 956 getLayer()->handle = 0; 957 } else { 958 if (getLayer()->compositionType == HWC_SIDEBAND) { 959 // If this was a sideband layer but the stream was removed, reset 960 // it to FRAMEBUFFER. The HWC can change it to OVERLAY in prepare. 961 getLayer()->compositionType = HWC_FRAMEBUFFER; 962 } 963 getLayer()->handle = buffer->handle; 964 } 965 } 966 virtual void onDisplayed() { 967 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 968 SharedBuffer const* sb = SharedBuffer::bufferFromData(visibleRegion.rects); 969 if (sb) { 970 sb->release(); 971 // not technically needed but safer 972 visibleRegion.numRects = 0; 973 visibleRegion.rects = NULL; 974 } 975 976 getLayer()->acquireFenceFd = -1; 977 } 978}; 979 980/* 981 * returns an iterator initialized at a given index in the layer list 982 */ 983HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) { 984 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 985 return LayerListIterator(); 986 } 987 const DisplayData& disp(mDisplayData[id]); 988 if (!mHwc || !disp.list || index > disp.list->numHwLayers) { 989 return LayerListIterator(); 990 } 991 return LayerListIterator(new HWCLayerVersion1(mHwc, disp.list->hwLayers), index); 992} 993 994/* 995 * returns an iterator on the beginning of the layer list 996 */ 997HWComposer::LayerListIterator HWComposer::begin(int32_t id) { 998 return getLayerIterator(id, 0); 999} 1000 1001/* 1002 * returns an iterator on the end of the layer list 1003 */ 1004HWComposer::LayerListIterator HWComposer::end(int32_t id) { 1005 size_t numLayers = 0; 1006 if (uint32_t(id) <= 31 && mAllocatedDisplayIDs.hasBit(id)) { 1007 const DisplayData& disp(mDisplayData[id]); 1008 if (mHwc && disp.list) { 1009 numLayers = disp.list->numHwLayers; 1010 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 1011 // with HWC 1.1, the last layer is always the HWC_FRAMEBUFFER_TARGET, 1012 // which we ignore when iterating through the layer list. 1013 ALOGE_IF(!numLayers, "mDisplayData[%d].list->numHwLayers is 0", id); 1014 if (numLayers) { 1015 numLayers--; 1016 } 1017 } 1018 } 1019 } 1020 return getLayerIterator(id, numLayers); 1021} 1022 1023// Converts a PixelFormat to a human-readable string. Max 11 chars. 1024// (Could use a table of prefab String8 objects.) 1025static String8 getFormatStr(PixelFormat format) { 1026 switch (format) { 1027 case PIXEL_FORMAT_RGBA_8888: return String8("RGBA_8888"); 1028 case PIXEL_FORMAT_RGBX_8888: return String8("RGBx_8888"); 1029 case PIXEL_FORMAT_RGB_888: return String8("RGB_888"); 1030 case PIXEL_FORMAT_RGB_565: return String8("RGB_565"); 1031 case PIXEL_FORMAT_BGRA_8888: return String8("BGRA_8888"); 1032 case PIXEL_FORMAT_sRGB_A_8888: return String8("sRGB_A_8888"); 1033 case PIXEL_FORMAT_sRGB_X_8888: return String8("sRGB_x_8888"); 1034 default: 1035 String8 result; 1036 result.appendFormat("? %08x", format); 1037 return result; 1038 } 1039} 1040 1041void HWComposer::dump(String8& result) const { 1042 if (mHwc) { 1043 result.appendFormat("Hardware Composer state (version %08x):\n", hwcApiVersion(mHwc)); 1044 result.appendFormat(" mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync); 1045 for (size_t i=0 ; i<mNumDisplays ; i++) { 1046 const DisplayData& disp(mDisplayData[i]); 1047 if (!disp.connected) 1048 continue; 1049 1050 const Vector< sp<Layer> >& visibleLayersSortedByZ = 1051 mFlinger->getLayerSortedByZForHwcDisplay(i); 1052 1053 result.appendFormat( 1054 " Display[%zd] : %ux%u, xdpi=%f, ydpi=%f, refresh=%" PRId64 "\n", 1055 i, disp.width, disp.height, disp.xdpi, disp.ydpi, disp.refresh); 1056 1057 if (disp.list) { 1058 result.appendFormat( 1059 " numHwLayers=%zu, flags=%08x\n", 1060 disp.list->numHwLayers, disp.list->flags); 1061 1062 result.append( 1063 " type | handle | hint | flag | tr | blnd | format | source crop (l,t,r,b) | frame | name \n" 1064 "-----------+----------+------+------+----+------+-------------+--------------------------------+------------------------+------\n"); 1065 // " _________ | ________ | ____ | ____ | __ | ____ | ___________ |_____._,_____._,_____._,_____._ |_____,_____,_____,_____ | ___... 1066 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 1067 const hwc_layer_1_t&l = disp.list->hwLayers[i]; 1068 int32_t format = -1; 1069 String8 name("unknown"); 1070 1071 if (i < visibleLayersSortedByZ.size()) { 1072 const sp<Layer>& layer(visibleLayersSortedByZ[i]); 1073 const sp<GraphicBuffer>& buffer( 1074 layer->getActiveBuffer()); 1075 if (buffer != NULL) { 1076 format = buffer->getPixelFormat(); 1077 } 1078 name = layer->getName(); 1079 } 1080 1081 int type = l.compositionType; 1082 if (type == HWC_FRAMEBUFFER_TARGET) { 1083 name = "HWC_FRAMEBUFFER_TARGET"; 1084 format = disp.format; 1085 } 1086 1087 static char const* compositionTypeName[] = { 1088 "GLES", 1089 "HWC", 1090 "BKGND", 1091 "FB TARGET", 1092 "UNKNOWN"}; 1093 if (type >= NELEM(compositionTypeName)) 1094 type = NELEM(compositionTypeName) - 1; 1095 1096 String8 formatStr = getFormatStr(format); 1097 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 1098 result.appendFormat( 1099 " %9s | %08" PRIxPTR " | %04x | %04x | %02x | %04x | %-11s |%7.1f,%7.1f,%7.1f,%7.1f |%5d,%5d,%5d,%5d | %s\n", 1100 compositionTypeName[type], 1101 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, formatStr.string(), 1102 l.sourceCropf.left, l.sourceCropf.top, l.sourceCropf.right, l.sourceCropf.bottom, 1103 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, 1104 name.string()); 1105 } else { 1106 result.appendFormat( 1107 " %9s | %08" PRIxPTR " | %04x | %04x | %02x | %04x | %-11s |%7d,%7d,%7d,%7d |%5d,%5d,%5d,%5d | %s\n", 1108 compositionTypeName[type], 1109 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, formatStr.string(), 1110 l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom, 1111 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, 1112 name.string()); 1113 } 1114 } 1115 } 1116 } 1117 } 1118 1119 if (mHwc && mHwc->dump) { 1120 const size_t SIZE = 4096; 1121 char buffer[SIZE]; 1122 mHwc->dump(mHwc, buffer, SIZE); 1123 result.append(buffer); 1124 } 1125} 1126 1127// --------------------------------------------------------------------------- 1128 1129HWComposer::VSyncThread::VSyncThread(HWComposer& hwc) 1130 : mHwc(hwc), mEnabled(false), 1131 mNextFakeVSync(0), 1132 mRefreshPeriod(hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY)) 1133{ 1134} 1135 1136void HWComposer::VSyncThread::setEnabled(bool enabled) { 1137 Mutex::Autolock _l(mLock); 1138 if (mEnabled != enabled) { 1139 mEnabled = enabled; 1140 mCondition.signal(); 1141 } 1142} 1143 1144void HWComposer::VSyncThread::onFirstRef() { 1145 run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE); 1146} 1147 1148bool HWComposer::VSyncThread::threadLoop() { 1149 { // scope for lock 1150 Mutex::Autolock _l(mLock); 1151 while (!mEnabled) { 1152 mCondition.wait(mLock); 1153 } 1154 } 1155 1156 const nsecs_t period = mRefreshPeriod; 1157 const nsecs_t now = systemTime(CLOCK_MONOTONIC); 1158 nsecs_t next_vsync = mNextFakeVSync; 1159 nsecs_t sleep = next_vsync - now; 1160 if (sleep < 0) { 1161 // we missed, find where the next vsync should be 1162 sleep = (period - ((now - next_vsync) % period)); 1163 next_vsync = now + sleep; 1164 } 1165 mNextFakeVSync = next_vsync + period; 1166 1167 struct timespec spec; 1168 spec.tv_sec = next_vsync / 1000000000; 1169 spec.tv_nsec = next_vsync % 1000000000; 1170 1171 int err; 1172 do { 1173 err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL); 1174 } while (err<0 && errno == EINTR); 1175 1176 if (err == 0) { 1177 mHwc.mEventHandler.onVSyncReceived(0, next_vsync); 1178 } 1179 1180 return true; 1181} 1182 1183HWComposer::DisplayData::DisplayData() 1184: width(0), height(0), format(HAL_PIXEL_FORMAT_RGBA_8888), 1185 xdpi(0.0f), ydpi(0.0f), 1186 refresh(0), 1187 connected(false), 1188 hasFbComp(false), hasOvComp(false), 1189 capacity(0), list(NULL), 1190 framebufferTarget(NULL), fbTargetHandle(0), 1191 lastRetireFence(Fence::NO_FENCE), lastDisplayFence(Fence::NO_FENCE), 1192 outbufHandle(NULL), outbufAcquireFence(Fence::NO_FENCE), 1193 events(0) 1194{} 1195 1196HWComposer::DisplayData::~DisplayData() { 1197 free(list); 1198} 1199 1200// --------------------------------------------------------------------------- 1201}; // namespace android 1202