HWComposer.cpp revision 3e095b251503d71bea04d6b707e8188cd30034e2
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/misc.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 <cutils/log.h> 41#include <cutils/properties.h> 42 43#include "Layer.h" // needed only for debugging 44#include "LayerBase.h" 45#include "HWComposer.h" 46#include "SurfaceFlinger.h" 47#include <utils/CallStack.h> 48 49namespace android { 50 51#define MIN_HWC_HEADER_VERSION 0 52 53static uint32_t hwcApiVersion(const hwc_composer_device_1_t* hwc) { 54 uint32_t hwcVersion = hwc->common.version; 55 if (MIN_HWC_HEADER_VERSION == 0 && 56 (hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK) == 0) { 57 // legacy version encoding 58 hwcVersion <<= 16; 59 } 60 return hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK; 61} 62 63static uint32_t hwcHeaderVersion(const hwc_composer_device_1_t* hwc) { 64 uint32_t hwcVersion = hwc->common.version; 65 if (MIN_HWC_HEADER_VERSION == 0 && 66 (hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK) == 0) { 67 // legacy version encoding 68 hwcVersion <<= 16; 69 } 70 return hwcVersion & HARDWARE_API_VERSION_2_HEADER_MASK; 71} 72 73static bool hwcHasApiVersion(const hwc_composer_device_1_t* hwc, 74 uint32_t version) { 75 return hwcApiVersion(hwc) >= (version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK); 76} 77 78// --------------------------------------------------------------------------- 79 80struct HWComposer::cb_context { 81 struct callbacks : public hwc_procs_t { 82 // these are here to facilitate the transition when adding 83 // new callbacks (an implementation can check for NULL before 84 // calling a new callback). 85 void (*zero[4])(void); 86 }; 87 callbacks procs; 88 HWComposer* hwc; 89}; 90 91// --------------------------------------------------------------------------- 92 93HWComposer::HWComposer( 94 const sp<SurfaceFlinger>& flinger, 95 EventHandler& handler) 96 : mFlinger(flinger), 97 mFbDev(0), mHwc(0), mNumDisplays(1), 98 mCBContext(new cb_context), 99 mEventHandler(handler), 100 mVSyncCount(0), mDebugForceFakeVSync(false) 101{ 102 for (size_t i =0 ; i<MAX_DISPLAYS ; i++) { 103 mLists[i] = 0; 104 } 105 106 char value[PROPERTY_VALUE_MAX]; 107 property_get("debug.sf.no_hw_vsync", value, "0"); 108 mDebugForceFakeVSync = atoi(value); 109 110 bool needVSyncThread = true; 111 112 // Note: some devices may insist that the FB HAL be opened before HWC. 113 loadFbHalModule(); 114 loadHwcModule(); 115 116 if (mFbDev && mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 117 // close FB HAL if we don't needed it. 118 // FIXME: this is temporary until we're not forced to open FB HAL 119 // before HWC. 120 framebuffer_close(mFbDev); 121 mFbDev = NULL; 122 } 123 124 // If we have no HWC, or a pre-1.1 HWC, an FB dev is mandatory. 125 if ((!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 126 && !mFbDev) { 127 ALOGE("ERROR: failed to open framebuffer, aborting"); 128 abort(); 129 } 130 131 // these display IDs are always reserved 132 for (size_t i=0 ; i<HWC_NUM_DISPLAY_TYPES ; i++) { 133 mAllocatedDisplayIDs.markBit(i); 134 } 135 136 if (mHwc) { 137 ALOGI("Using %s version %u.%u", HWC_HARDWARE_COMPOSER, 138 (hwcApiVersion(mHwc) >> 24) & 0xff, 139 (hwcApiVersion(mHwc) >> 16) & 0xff); 140 if (mHwc->registerProcs) { 141 mCBContext->hwc = this; 142 mCBContext->procs.invalidate = &hook_invalidate; 143 mCBContext->procs.vsync = &hook_vsync; 144 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 145 mCBContext->procs.hotplug = &hook_hotplug; 146 else 147 mCBContext->procs.hotplug = NULL; 148 memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero)); 149 mHwc->registerProcs(mHwc, &mCBContext->procs); 150 } 151 152 // don't need a vsync thread if we have a hardware composer 153 needVSyncThread = false; 154 // always turn vsync off when we start 155 eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); 156 157 // the number of displays we actually have depends on the 158 // hw composer version 159 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) { 160 // 1.2 adds support for virtual displays 161 mNumDisplays = MAX_DISPLAYS; 162 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 163 // 1.1 adds support for multiple displays 164 mNumDisplays = HWC_NUM_DISPLAY_TYPES; 165 } else { 166 mNumDisplays = 1; 167 } 168 } 169 170 if (mFbDev) { 171 ALOG_ASSERT(!(mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)), 172 "should only have fbdev if no hwc or hwc is 1.0"); 173 174 DisplayData& disp(mDisplayData[HWC_DISPLAY_PRIMARY]); 175 disp.connected = true; 176 disp.width = mFbDev->width; 177 disp.height = mFbDev->height; 178 disp.format = mFbDev->format; 179 disp.xdpi = mFbDev->xdpi; 180 disp.ydpi = mFbDev->ydpi; 181 if (disp.refresh == 0) { 182 disp.refresh = nsecs_t(1e9 / mFbDev->fps); 183 ALOGW("getting VSYNC period from fb HAL: %lld", disp.refresh); 184 } 185 if (disp.refresh == 0) { 186 disp.refresh = nsecs_t(1e9 / 60.0); 187 ALOGW("getting VSYNC period from thin air: %lld", 188 mDisplayData[HWC_DISPLAY_PRIMARY].refresh); 189 } 190 } else if (mHwc) { 191 // here we're guaranteed to have at least HWC 1.1 192 for (size_t i =0 ; i<HWC_NUM_DISPLAY_TYPES ; i++) { 193 queryDisplayProperties(i); 194 } 195 } 196 197 if (needVSyncThread) { 198 // we don't have VSYNC support, we need to fake it 199 mVSyncThread = new VSyncThread(*this); 200 } 201} 202 203HWComposer::~HWComposer() { 204 if (mHwc) { 205 eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); 206 } 207 if (mVSyncThread != NULL) { 208 mVSyncThread->requestExitAndWait(); 209 } 210 if (mHwc) { 211 hwc_close_1(mHwc); 212 } 213 if (mFbDev) { 214 framebuffer_close(mFbDev); 215 } 216 delete mCBContext; 217} 218 219// Load and prepare the hardware composer module. Sets mHwc. 220void HWComposer::loadHwcModule() 221{ 222 hw_module_t const* module; 223 224 if (hw_get_module(HWC_HARDWARE_MODULE_ID, &module) != 0) { 225 ALOGE("%s module not found", HWC_HARDWARE_MODULE_ID); 226 return; 227 } 228 229 int err = hwc_open_1(module, &mHwc); 230 if (err) { 231 ALOGE("%s device failed to initialize (%s)", 232 HWC_HARDWARE_COMPOSER, strerror(-err)); 233 return; 234 } 235 236 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_0) || 237 hwcHeaderVersion(mHwc) < MIN_HWC_HEADER_VERSION || 238 hwcHeaderVersion(mHwc) > HWC_HEADER_VERSION) { 239 ALOGE("%s device version %#x unsupported, will not be used", 240 HWC_HARDWARE_COMPOSER, mHwc->common.version); 241 hwc_close_1(mHwc); 242 mHwc = NULL; 243 return; 244 } 245} 246 247// Load and prepare the FB HAL, which uses the gralloc module. Sets mFbDev. 248void HWComposer::loadFbHalModule() 249{ 250 hw_module_t const* module; 251 252 if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) != 0) { 253 ALOGE("%s module not found", GRALLOC_HARDWARE_MODULE_ID); 254 return; 255 } 256 257 int err = framebuffer_open(module, &mFbDev); 258 if (err) { 259 ALOGE("framebuffer_open failed (%s)", strerror(-err)); 260 return; 261 } 262} 263 264status_t HWComposer::initCheck() const { 265 return mHwc ? NO_ERROR : NO_INIT; 266} 267 268void HWComposer::hook_invalidate(const struct hwc_procs* procs) { 269 cb_context* ctx = reinterpret_cast<cb_context*>( 270 const_cast<hwc_procs_t*>(procs)); 271 ctx->hwc->invalidate(); 272} 273 274void HWComposer::hook_vsync(const struct hwc_procs* procs, int disp, 275 int64_t timestamp) { 276 cb_context* ctx = reinterpret_cast<cb_context*>( 277 const_cast<hwc_procs_t*>(procs)); 278 ctx->hwc->vsync(disp, timestamp); 279} 280 281void HWComposer::hook_hotplug(const struct hwc_procs* procs, int disp, 282 int connected) { 283 cb_context* ctx = reinterpret_cast<cb_context*>( 284 const_cast<hwc_procs_t*>(procs)); 285 ctx->hwc->hotplug(disp, connected); 286} 287 288void HWComposer::invalidate() { 289 mFlinger->repaintEverything(); 290} 291 292void HWComposer::vsync(int disp, int64_t timestamp) { 293 ATRACE_INT("VSYNC", ++mVSyncCount&1); 294 mEventHandler.onVSyncReceived(disp, timestamp); 295 Mutex::Autolock _l(mLock); 296 mLastHwVSync = timestamp; 297} 298 299void HWComposer::hotplug(int disp, int connected) { 300 if (disp == HWC_DISPLAY_PRIMARY || disp >= HWC_NUM_DISPLAY_TYPES) { 301 ALOGE("hotplug event received for invalid display: disp=%d connected=%d", 302 disp, connected); 303 return; 304 } 305 queryDisplayProperties(disp); 306 mEventHandler.onHotplugReceived(disp, bool(connected)); 307} 308 309static const uint32_t DISPLAY_ATTRIBUTES[] = { 310 HWC_DISPLAY_VSYNC_PERIOD, 311 HWC_DISPLAY_WIDTH, 312 HWC_DISPLAY_HEIGHT, 313 HWC_DISPLAY_DPI_X, 314 HWC_DISPLAY_DPI_Y, 315 HWC_DISPLAY_NO_ATTRIBUTE, 316}; 317#define NUM_DISPLAY_ATTRIBUTES (sizeof(DISPLAY_ATTRIBUTES) / sizeof(DISPLAY_ATTRIBUTES)[0]) 318 319// http://developer.android.com/reference/android/util/DisplayMetrics.html 320#define ANDROID_DENSITY_TV 213 321#define ANDROID_DENSITY_XHIGH 320 322 323status_t HWComposer::queryDisplayProperties(int disp) { 324 325 LOG_ALWAYS_FATAL_IF(!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); 326 327 // use zero as default value for unspecified attributes 328 int32_t values[NUM_DISPLAY_ATTRIBUTES - 1]; 329 memset(values, 0, sizeof(values)); 330 331 uint32_t config; 332 size_t numConfigs = 1; 333 status_t err = mHwc->getDisplayConfigs(mHwc, disp, &config, &numConfigs); 334 if (err != NO_ERROR) { 335 // this can happen if an unpluggable display is not connected 336 mDisplayData[disp].connected = false; 337 return err; 338 } 339 340 err = mHwc->getDisplayAttributes(mHwc, disp, config, DISPLAY_ATTRIBUTES, values); 341 if (err != NO_ERROR) { 342 // we can't get this display's info. turn it off. 343 mDisplayData[disp].connected = false; 344 return err; 345 } 346 347 int32_t w = 0, h = 0; 348 for (size_t i = 0; i < NUM_DISPLAY_ATTRIBUTES - 1; i++) { 349 switch (DISPLAY_ATTRIBUTES[i]) { 350 case HWC_DISPLAY_VSYNC_PERIOD: 351 mDisplayData[disp].refresh = nsecs_t(values[i]); 352 break; 353 case HWC_DISPLAY_WIDTH: 354 mDisplayData[disp].width = values[i]; 355 break; 356 case HWC_DISPLAY_HEIGHT: 357 mDisplayData[disp].height = values[i]; 358 break; 359 case HWC_DISPLAY_DPI_X: 360 mDisplayData[disp].xdpi = values[i] / 1000.0f; 361 break; 362 case HWC_DISPLAY_DPI_Y: 363 mDisplayData[disp].ydpi = values[i] / 1000.0f; 364 break; 365 default: 366 ALOG_ASSERT(false, "unknown display attribute[%d] %#x", 367 i, DISPLAY_ATTRIBUTES[i]); 368 break; 369 } 370 } 371 372 // FIXME: what should we set the format to? 373 mDisplayData[disp].format = HAL_PIXEL_FORMAT_RGBA_8888; 374 mDisplayData[disp].connected = true; 375 if (mDisplayData[disp].xdpi == 0.0f || mDisplayData[disp].ydpi == 0.0f) { 376 // is there anything smarter we can do? 377 if (h >= 1080) { 378 mDisplayData[disp].xdpi = ANDROID_DENSITY_XHIGH; 379 mDisplayData[disp].ydpi = ANDROID_DENSITY_XHIGH; 380 } else { 381 mDisplayData[disp].xdpi = ANDROID_DENSITY_TV; 382 mDisplayData[disp].ydpi = ANDROID_DENSITY_TV; 383 } 384 } 385 return NO_ERROR; 386} 387 388int32_t HWComposer::allocateDisplayId() { 389 if (mAllocatedDisplayIDs.count() >= mNumDisplays) { 390 return NO_MEMORY; 391 } 392 int32_t id = mAllocatedDisplayIDs.firstUnmarkedBit(); 393 mAllocatedDisplayIDs.markBit(id); 394 return id; 395} 396 397status_t HWComposer::freeDisplayId(int32_t id) { 398 if (id < HWC_NUM_DISPLAY_TYPES) { 399 // cannot free the reserved IDs 400 return BAD_VALUE; 401 } 402 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 403 return BAD_INDEX; 404 } 405 mAllocatedDisplayIDs.clearBit(id); 406 return NO_ERROR; 407} 408 409nsecs_t HWComposer::getRefreshPeriod(int disp) const { 410 return mDisplayData[disp].refresh; 411} 412 413nsecs_t HWComposer::getRefreshTimestamp(int disp) const { 414 // this returns the last refresh timestamp. 415 // if the last one is not available, we estimate it based on 416 // the refresh period and whatever closest timestamp we have. 417 Mutex::Autolock _l(mLock); 418 nsecs_t now = systemTime(CLOCK_MONOTONIC); 419 return now - ((now - mLastHwVSync) % mDisplayData[disp].refresh); 420} 421 422uint32_t HWComposer::getWidth(int disp) const { 423 return mDisplayData[disp].width; 424} 425 426uint32_t HWComposer::getHeight(int disp) const { 427 return mDisplayData[disp].height; 428} 429 430uint32_t HWComposer::getFormat(int disp) const { 431 return mDisplayData[disp].format; 432} 433 434float HWComposer::getDpiX(int disp) const { 435 return mDisplayData[disp].xdpi; 436} 437 438float HWComposer::getDpiY(int disp) const { 439 return mDisplayData[disp].ydpi; 440} 441 442bool HWComposer::isConnected(int disp) const { 443 return mDisplayData[disp].connected; 444} 445 446void HWComposer::eventControl(int disp, int event, int enabled) { 447 if (uint32_t(disp)>31 || !mAllocatedDisplayIDs.hasBit(disp)) { 448 ALOGD("eventControl ignoring event %d on unallocated disp %d (en=%d)", 449 event, disp, enabled); 450 return; 451 } 452 if (event != EVENT_VSYNC) { 453 ALOGW("eventControl got unexpected event %d (disp=%d en=%d)", 454 event, disp, enabled); 455 return; 456 } 457 status_t err = NO_ERROR; 458 if (mHwc && !mDebugForceFakeVSync) { 459 // NOTE: we use our own internal lock here because we have to call 460 // into the HWC with the lock held, and we want to make sure 461 // that even if HWC blocks (which it shouldn't), it won't 462 // affect other threads. 463 Mutex::Autolock _l(mEventControlLock); 464 const int32_t eventBit = 1UL << event; 465 const int32_t newValue = enabled ? eventBit : 0; 466 const int32_t oldValue = mDisplayData[disp].events & eventBit; 467 if (newValue != oldValue) { 468 ATRACE_CALL(); 469 err = mHwc->eventControl(mHwc, disp, event, enabled); 470 if (!err) { 471 int32_t& events(mDisplayData[disp].events); 472 events = (events & ~eventBit) | newValue; 473 } 474 } 475 // error here should not happen -- not sure what we should 476 // do if it does. 477 ALOGE_IF(err, "eventControl(%d, %d) failed %s", 478 event, enabled, strerror(-err)); 479 } 480 481 if (err == NO_ERROR && mVSyncThread != NULL) { 482 mVSyncThread->setEnabled(enabled); 483 } 484} 485 486status_t HWComposer::createWorkList(int32_t id, size_t numLayers) { 487 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 488 return BAD_INDEX; 489 } 490 491 if (mHwc) { 492 DisplayData& disp(mDisplayData[id]); 493 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 494 // we need space for the HWC_FRAMEBUFFER_TARGET 495 numLayers++; 496 } 497 if (disp.capacity < numLayers || disp.list == NULL) { 498 size_t size = sizeof(hwc_display_contents_1_t) 499 + numLayers * sizeof(hwc_layer_1_t); 500 free(disp.list); 501 disp.list = (hwc_display_contents_1_t*)malloc(size); 502 disp.capacity = numLayers; 503 } 504 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 505 disp.framebufferTarget = &disp.list->hwLayers[numLayers - 1]; 506 memset(disp.framebufferTarget, 0, sizeof(hwc_layer_1_t)); 507 const hwc_rect_t r = { 0, 0, disp.width, disp.height }; 508 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; 509 disp.framebufferTarget->hints = 0; 510 disp.framebufferTarget->flags = 0; 511 disp.framebufferTarget->handle = disp.fbTargetHandle; 512 disp.framebufferTarget->transform = 0; 513 disp.framebufferTarget->blending = HWC_BLENDING_PREMULT; 514 disp.framebufferTarget->sourceCrop = r; 515 disp.framebufferTarget->displayFrame = r; 516 disp.framebufferTarget->visibleRegionScreen.numRects = 1; 517 disp.framebufferTarget->visibleRegionScreen.rects = 518 &disp.framebufferTarget->displayFrame; 519 disp.framebufferTarget->acquireFenceFd = -1; 520 disp.framebufferTarget->releaseFenceFd = -1; 521 } 522 disp.list->retireFenceFd = -1; 523 disp.list->flags = HWC_GEOMETRY_CHANGED; 524 disp.list->numHwLayers = numLayers; 525 } 526 return NO_ERROR; 527} 528 529status_t HWComposer::setFramebufferTarget(int32_t id, 530 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buf) { 531 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 532 return BAD_INDEX; 533 } 534 DisplayData& disp(mDisplayData[id]); 535 if (!disp.framebufferTarget) { 536 // this should never happen, but apparently eglCreateWindowSurface() 537 // triggers a SurfaceTextureClient::queueBuffer() on some 538 // devices (!?) -- log and ignore. 539 ALOGE("HWComposer: framebufferTarget is null"); 540// CallStack stack; 541// stack.update(); 542// stack.dump(""); 543 return NO_ERROR; 544 } 545 546 int acquireFenceFd = -1; 547 if (acquireFence != NULL) { 548 acquireFenceFd = acquireFence->dup(); 549 } 550 551 // ALOGD("fbPost: handle=%p, fence=%d", buf->handle, acquireFenceFd); 552 disp.fbTargetHandle = buf->handle; 553 disp.framebufferTarget->handle = disp.fbTargetHandle; 554 disp.framebufferTarget->acquireFenceFd = acquireFenceFd; 555 return NO_ERROR; 556} 557 558status_t HWComposer::prepare() { 559 for (size_t i=0 ; i<mNumDisplays ; i++) { 560 DisplayData& disp(mDisplayData[i]); 561 if (disp.framebufferTarget) { 562 // make sure to reset the type to HWC_FRAMEBUFFER_TARGET 563 // DO NOT reset the handle field to NULL, because it's possible 564 // that we have nothing to redraw (eg: eglSwapBuffers() not called) 565 // in which case, we should continue to use the same buffer. 566 LOG_FATAL_IF(disp.list == NULL); 567 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; 568 } 569 if (!disp.connected && disp.list != NULL) { 570 ALOGW("WARNING: disp %d: connected, non-null list, layers=%d", 571 i, disp.list->numHwLayers); 572 } 573 mLists[i] = disp.list; 574 if (mLists[i]) { 575 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) { 576 mLists[i]->outbuf = NULL; 577 mLists[i]->outbufAcquireFenceFd = -1; 578 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 579 // garbage data to catch improper use 580 mLists[i]->dpy = (hwc_display_t)0xDEADBEEF; 581 mLists[i]->sur = (hwc_surface_t)0xDEADBEEF; 582 } else { 583 mLists[i]->dpy = EGL_NO_DISPLAY; 584 mLists[i]->sur = EGL_NO_SURFACE; 585 } 586 } 587 } 588 589 int err = mHwc->prepare(mHwc, mNumDisplays, mLists); 590 ALOGE_IF(err, "HWComposer: prepare failed (%s)", strerror(-err)); 591 592 if (err == NO_ERROR) { 593 // here we're just making sure that "skip" layers are set 594 // to HWC_FRAMEBUFFER and we're also counting how many layers 595 // we have of each type. 596 for (size_t i=0 ; i<mNumDisplays ; i++) { 597 DisplayData& disp(mDisplayData[i]); 598 disp.hasFbComp = false; 599 disp.hasOvComp = false; 600 if (disp.list) { 601 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 602 hwc_layer_1_t& l = disp.list->hwLayers[i]; 603 604 //ALOGD("prepare: %d, type=%d, handle=%p", 605 // i, l.compositionType, l.handle); 606 607 if (l.flags & HWC_SKIP_LAYER) { 608 l.compositionType = HWC_FRAMEBUFFER; 609 } 610 if (l.compositionType == HWC_FRAMEBUFFER) { 611 disp.hasFbComp = true; 612 } 613 if (l.compositionType == HWC_OVERLAY) { 614 disp.hasOvComp = true; 615 } 616 } 617 } 618 } 619 } 620 return (status_t)err; 621} 622 623bool HWComposer::hasHwcComposition(int32_t id) const { 624 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 625 return false; 626 return mDisplayData[id].hasOvComp; 627} 628 629bool HWComposer::hasGlesComposition(int32_t id) const { 630 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 631 return false; 632 return mDisplayData[id].hasFbComp; 633} 634 635int HWComposer::getAndResetReleaseFenceFd(int32_t id) { 636 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 637 return BAD_INDEX; 638 639 int fd = INVALID_OPERATION; 640 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 641 const DisplayData& disp(mDisplayData[id]); 642 if (disp.framebufferTarget) { 643 fd = disp.framebufferTarget->releaseFenceFd; 644 disp.framebufferTarget->acquireFenceFd = -1; 645 disp.framebufferTarget->releaseFenceFd = -1; 646 } 647 } 648 return fd; 649} 650 651status_t HWComposer::commit() { 652 int err = NO_ERROR; 653 if (mHwc) { 654 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 655 // On version 1.0, the OpenGL ES target surface is communicated 656 // by the (dpy, sur) fields and we are guaranteed to have only 657 // a single display. 658 mLists[0]->dpy = eglGetCurrentDisplay(); 659 mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW); 660 } 661 662 err = mHwc->set(mHwc, mNumDisplays, mLists); 663 664 for (size_t i=0 ; i<mNumDisplays ; i++) { 665 DisplayData& disp(mDisplayData[i]); 666 if (disp.list) { 667 if (disp.list->retireFenceFd != -1) { 668 close(disp.list->retireFenceFd); 669 disp.list->retireFenceFd = -1; 670 } 671 disp.list->flags &= ~HWC_GEOMETRY_CHANGED; 672 } 673 } 674 } 675 return (status_t)err; 676} 677 678status_t HWComposer::release(int disp) { 679 LOG_FATAL_IF(disp >= HWC_NUM_DISPLAY_TYPES); 680 if (mHwc) { 681 eventControl(disp, HWC_EVENT_VSYNC, 0); 682 return (status_t)mHwc->blank(mHwc, disp, 1); 683 } 684 return NO_ERROR; 685} 686 687status_t HWComposer::acquire(int disp) { 688 LOG_FATAL_IF(disp >= HWC_NUM_DISPLAY_TYPES); 689 if (mHwc) { 690 return (status_t)mHwc->blank(mHwc, disp, 0); 691 } 692 return NO_ERROR; 693} 694 695void HWComposer::disconnectDisplay(int disp) { 696 LOG_ALWAYS_FATAL_IF(disp < 0 || disp == HWC_DISPLAY_PRIMARY); 697 if (disp >= HWC_NUM_DISPLAY_TYPES) { 698 // nothing to do for these yet 699 return; 700 } 701 DisplayData& dd(mDisplayData[disp]); 702 if (dd.list != NULL) { 703 free(dd.list); 704 dd.list = NULL; 705 dd.framebufferTarget = NULL; // points into dd.list 706 dd.fbTargetHandle = NULL; 707 } 708} 709 710int HWComposer::getVisualID() const { 711 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 712 // FIXME: temporary hack until HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED 713 // is supported by the implementation. we can only be in this case 714 // if we have HWC 1.1 715 return HAL_PIXEL_FORMAT_RGBA_8888; 716 //return HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED; 717 } else { 718 return mFbDev->format; 719 } 720} 721 722bool HWComposer::supportsFramebufferTarget() const { 723 return (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); 724} 725 726int HWComposer::fbPost(int32_t id, 727 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buffer) { 728 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 729 return setFramebufferTarget(id, acquireFence, buffer); 730 } else { 731 if (acquireFence != NULL) { 732 acquireFence->waitForever(1000, "HWComposer::fbPost"); 733 } 734 return mFbDev->post(mFbDev, buffer->handle); 735 } 736} 737 738int HWComposer::fbCompositionComplete() { 739 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 740 return NO_ERROR; 741 742 if (mFbDev->compositionComplete) { 743 return mFbDev->compositionComplete(mFbDev); 744 } else { 745 return INVALID_OPERATION; 746 } 747} 748 749void HWComposer::fbDump(String8& result) { 750 if (mFbDev && mFbDev->common.version >= 1 && mFbDev->dump) { 751 const size_t SIZE = 4096; 752 char buffer[SIZE]; 753 mFbDev->dump(mFbDev, buffer, SIZE); 754 result.append(buffer); 755 } 756} 757 758/* 759 * Helper template to implement a concrete HWCLayer 760 * This holds the pointer to the concrete hwc layer type 761 * and implements the "iterable" side of HWCLayer. 762 */ 763template<typename CONCRETE, typename HWCTYPE> 764class Iterable : public HWComposer::HWCLayer { 765protected: 766 HWCTYPE* const mLayerList; 767 HWCTYPE* mCurrentLayer; 768 Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer) { } 769 inline HWCTYPE const * getLayer() const { return mCurrentLayer; } 770 inline HWCTYPE* getLayer() { return mCurrentLayer; } 771 virtual ~Iterable() { } 772private: 773 // returns a copy of ourselves 774 virtual HWComposer::HWCLayer* dup() { 775 return new CONCRETE( static_cast<const CONCRETE&>(*this) ); 776 } 777 virtual status_t setLayer(size_t index) { 778 mCurrentLayer = &mLayerList[index]; 779 return NO_ERROR; 780 } 781}; 782 783/* 784 * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0. 785 * This implements the HWCLayer side of HWCIterableLayer. 786 */ 787class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> { 788public: 789 HWCLayerVersion1(hwc_layer_1_t* layer) 790 : Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer) { } 791 792 virtual int32_t getCompositionType() const { 793 return getLayer()->compositionType; 794 } 795 virtual uint32_t getHints() const { 796 return getLayer()->hints; 797 } 798 virtual int getAndResetReleaseFenceFd() { 799 int fd = getLayer()->releaseFenceFd; 800 getLayer()->releaseFenceFd = -1; 801 return fd; 802 } 803 virtual void setAcquireFenceFd(int fenceFd) { 804 getLayer()->acquireFenceFd = fenceFd; 805 } 806 virtual void setPerFrameDefaultState() { 807 //getLayer()->compositionType = HWC_FRAMEBUFFER; 808 } 809 virtual void setDefaultState() { 810 getLayer()->compositionType = HWC_FRAMEBUFFER; 811 getLayer()->hints = 0; 812 getLayer()->flags = HWC_SKIP_LAYER; 813 getLayer()->handle = 0; 814 getLayer()->transform = 0; 815 getLayer()->blending = HWC_BLENDING_NONE; 816 getLayer()->visibleRegionScreen.numRects = 0; 817 getLayer()->visibleRegionScreen.rects = NULL; 818 getLayer()->acquireFenceFd = -1; 819 getLayer()->releaseFenceFd = -1; 820 } 821 virtual void setSkip(bool skip) { 822 if (skip) { 823 getLayer()->flags |= HWC_SKIP_LAYER; 824 } else { 825 getLayer()->flags &= ~HWC_SKIP_LAYER; 826 } 827 } 828 virtual void setBlending(uint32_t blending) { 829 getLayer()->blending = blending; 830 } 831 virtual void setTransform(uint32_t transform) { 832 getLayer()->transform = transform; 833 } 834 virtual void setFrame(const Rect& frame) { 835 reinterpret_cast<Rect&>(getLayer()->displayFrame) = frame; 836 } 837 virtual void setCrop(const Rect& crop) { 838 reinterpret_cast<Rect&>(getLayer()->sourceCrop) = crop; 839 } 840 virtual void setVisibleRegionScreen(const Region& reg) { 841 // Region::getSharedBuffer creates a reference to the underlying 842 // SharedBuffer of this Region, this reference is freed 843 // in onDisplayed() 844 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 845 SharedBuffer const* sb = reg.getSharedBuffer(&visibleRegion.numRects); 846 visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(sb->data()); 847 } 848 virtual void setBuffer(const sp<GraphicBuffer>& buffer) { 849 if (buffer == 0 || buffer->handle == 0) { 850 getLayer()->compositionType = HWC_FRAMEBUFFER; 851 getLayer()->flags |= HWC_SKIP_LAYER; 852 getLayer()->handle = 0; 853 } else { 854 getLayer()->handle = buffer->handle; 855 } 856 } 857 virtual void onDisplayed() { 858 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 859 SharedBuffer const* sb = SharedBuffer::bufferFromData(visibleRegion.rects); 860 if (sb) { 861 sb->release(); 862 // not technically needed but safer 863 visibleRegion.numRects = 0; 864 visibleRegion.rects = NULL; 865 } 866 867 getLayer()->acquireFenceFd = -1; 868 } 869}; 870 871/* 872 * returns an iterator initialized at a given index in the layer list 873 */ 874HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) { 875 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 876 return LayerListIterator(); 877 } 878 const DisplayData& disp(mDisplayData[id]); 879 if (!mHwc || !disp.list || index > disp.list->numHwLayers) { 880 return LayerListIterator(); 881 } 882 return LayerListIterator(new HWCLayerVersion1(disp.list->hwLayers), index); 883} 884 885/* 886 * returns an iterator on the beginning of the layer list 887 */ 888HWComposer::LayerListIterator HWComposer::begin(int32_t id) { 889 return getLayerIterator(id, 0); 890} 891 892/* 893 * returns an iterator on the end of the layer list 894 */ 895HWComposer::LayerListIterator HWComposer::end(int32_t id) { 896 size_t numLayers = 0; 897 if (uint32_t(id) <= 31 && mAllocatedDisplayIDs.hasBit(id)) { 898 const DisplayData& disp(mDisplayData[id]); 899 if (mHwc && disp.list) { 900 numLayers = disp.list->numHwLayers; 901 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 902 // with HWC 1.1, the last layer is always the HWC_FRAMEBUFFER_TARGET, 903 // which we ignore when iterating through the layer list. 904 ALOGE_IF(!numLayers, "mDisplayData[%d].list->numHwLayers is 0", id); 905 if (numLayers) { 906 numLayers--; 907 } 908 } 909 } 910 } 911 return getLayerIterator(id, numLayers); 912} 913 914void HWComposer::dump(String8& result, char* buffer, size_t SIZE) const { 915 if (mHwc) { 916 result.appendFormat("Hardware Composer state (version %8x):\n", hwcApiVersion(mHwc)); 917 result.appendFormat(" mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync); 918 for (size_t i=0 ; i<mNumDisplays ; i++) { 919 const DisplayData& disp(mDisplayData[i]); 920 921 const Vector< sp<LayerBase> >& visibleLayersSortedByZ = 922 mFlinger->getLayerSortedByZForHwcDisplay(i); 923 924 if (disp.connected) { 925 result.appendFormat( 926 " Display[%d] : %ux%u, xdpi=%f, ydpi=%f, refresh=%lld\n", 927 i, disp.width, disp.height, disp.xdpi, disp.ydpi, disp.refresh); 928 } 929 930 if (disp.list && disp.connected) { 931 result.appendFormat( 932 " numHwLayers=%u, flags=%08x\n", 933 disp.list->numHwLayers, disp.list->flags); 934 935 result.append( 936 " type | handle | hints | flags | tr | blend | format | source crop | frame name \n" 937 "------------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n"); 938 // " __________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____] 939 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 940 const hwc_layer_1_t&l = disp.list->hwLayers[i]; 941 int32_t format = -1; 942 String8 name("unknown"); 943 944 if (i < visibleLayersSortedByZ.size()) { 945 const sp<LayerBase>& layer(visibleLayersSortedByZ[i]); 946 if (layer->getLayer() != NULL) { 947 const sp<GraphicBuffer>& buffer( 948 layer->getLayer()->getActiveBuffer()); 949 if (buffer != NULL) { 950 format = buffer->getPixelFormat(); 951 } 952 } 953 name = layer->getName(); 954 } 955 956 int type = l.compositionType; 957 if (type == HWC_FRAMEBUFFER_TARGET) { 958 name = "HWC_FRAMEBUFFER_TARGET"; 959 format = disp.format; 960 } 961 962 static char const* compositionTypeName[] = { 963 "GLES", 964 "HWC", 965 "BACKGROUND", 966 "FB TARGET", 967 "UNKNOWN"}; 968 if (type >= NELEM(compositionTypeName)) 969 type = NELEM(compositionTypeName) - 1; 970 971 result.appendFormat( 972 " %10s | %08x | %08x | %08x | %02x | %05x | %08x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d] %s\n", 973 compositionTypeName[type], 974 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format, 975 l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom, 976 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, 977 name.string()); 978 } 979 } 980 } 981 } 982 983 if (mHwc && mHwc->dump) { 984 mHwc->dump(mHwc, buffer, SIZE); 985 result.append(buffer); 986 } 987} 988 989// --------------------------------------------------------------------------- 990 991HWComposer::VSyncThread::VSyncThread(HWComposer& hwc) 992 : mHwc(hwc), mEnabled(false), 993 mNextFakeVSync(0), 994 mRefreshPeriod(hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY)) 995{ 996} 997 998void HWComposer::VSyncThread::setEnabled(bool enabled) { 999 Mutex::Autolock _l(mLock); 1000 if (mEnabled != enabled) { 1001 mEnabled = enabled; 1002 mCondition.signal(); 1003 } 1004} 1005 1006void HWComposer::VSyncThread::onFirstRef() { 1007 run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE); 1008} 1009 1010bool HWComposer::VSyncThread::threadLoop() { 1011 { // scope for lock 1012 Mutex::Autolock _l(mLock); 1013 while (!mEnabled) { 1014 mCondition.wait(mLock); 1015 } 1016 } 1017 1018 const nsecs_t period = mRefreshPeriod; 1019 const nsecs_t now = systemTime(CLOCK_MONOTONIC); 1020 nsecs_t next_vsync = mNextFakeVSync; 1021 nsecs_t sleep = next_vsync - now; 1022 if (sleep < 0) { 1023 // we missed, find where the next vsync should be 1024 sleep = (period - ((now - next_vsync) % period)); 1025 next_vsync = now + sleep; 1026 } 1027 mNextFakeVSync = next_vsync + period; 1028 1029 struct timespec spec; 1030 spec.tv_sec = next_vsync / 1000000000; 1031 spec.tv_nsec = next_vsync % 1000000000; 1032 1033 int err; 1034 do { 1035 err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL); 1036 } while (err<0 && errno == EINTR); 1037 1038 if (err == 0) { 1039 mHwc.mEventHandler.onVSyncReceived(0, next_vsync); 1040 } 1041 1042 return true; 1043} 1044 1045// --------------------------------------------------------------------------- 1046}; // namespace android 1047