HWComposer.cpp revision d142f4b787abae7a5c392ded0dd2741574a0bce2
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/String8.h> 29#include <utils/Thread.h> 30#include <utils/Trace.h> 31#include <utils/Vector.h> 32 33#include <ui/GraphicBuffer.h> 34 35#include <hardware/hardware.h> 36#include <hardware/hwcomposer.h> 37 38#include <android/configuration.h> 39 40#include <cutils/log.h> 41#include <cutils/properties.h> 42 43#include "HWComposer.h" 44 45#include "../Layer.h" // needed only for debugging 46#include "../SurfaceFlinger.h" 47 48namespace android { 49 50#define MIN_HWC_HEADER_VERSION HWC_HEADER_VERSION 51 52static uint32_t hwcApiVersion(const hwc_composer_device_1_t* hwc) { 53 uint32_t hwcVersion = hwc->common.version; 54 return hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK; 55} 56 57static uint32_t hwcHeaderVersion(const hwc_composer_device_1_t* hwc) { 58 uint32_t hwcVersion = hwc->common.version; 59 return hwcVersion & HARDWARE_API_VERSION_2_HEADER_MASK; 60} 61 62static bool hwcHasApiVersion(const hwc_composer_device_1_t* hwc, 63 uint32_t version) { 64 return hwcApiVersion(hwc) >= (version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK); 65} 66 67// --------------------------------------------------------------------------- 68 69struct HWComposer::cb_context { 70 struct callbacks : public hwc_procs_t { 71 // these are here to facilitate the transition when adding 72 // new callbacks (an implementation can check for NULL before 73 // calling a new callback). 74 void (*zero[4])(void); 75 }; 76 callbacks procs; 77 HWComposer* hwc; 78}; 79 80// --------------------------------------------------------------------------- 81 82HWComposer::HWComposer( 83 const sp<SurfaceFlinger>& flinger, 84 EventHandler& handler) 85 : mFlinger(flinger), 86 mFbDev(0), mHwc(0), mNumDisplays(1), 87 mCBContext(new cb_context), 88 mEventHandler(handler), 89 mDebugForceFakeVSync(false) 90{ 91 for (size_t i =0 ; i<MAX_HWC_DISPLAYS ; i++) { 92 mLists[i] = 0; 93 } 94 95 for (size_t i=0 ; i<HWC_NUM_PHYSICAL_DISPLAY_TYPES ; i++) { 96 mLastHwVSync[i] = 0; 97 mVSyncCounts[i] = 0; 98 } 99 100 char value[PROPERTY_VALUE_MAX]; 101 property_get("debug.sf.no_hw_vsync", value, "0"); 102 mDebugForceFakeVSync = atoi(value); 103 104 bool needVSyncThread = true; 105 106 // Note: some devices may insist that the FB HAL be opened before HWC. 107 int fberr = loadFbHalModule(); 108 loadHwcModule(); 109 110 if (mFbDev && mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 111 // close FB HAL if we don't needed it. 112 // FIXME: this is temporary until we're not forced to open FB HAL 113 // before HWC. 114 framebuffer_close(mFbDev); 115 mFbDev = NULL; 116 } 117 118 // If we have no HWC, or a pre-1.1 HWC, an FB dev is mandatory. 119 if ((!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 120 && !mFbDev) { 121 ALOGE("ERROR: failed to open framebuffer (%s), aborting", 122 strerror(-fberr)); 123 abort(); 124 } 125 126 // these display IDs are always reserved 127 for (size_t i=0 ; i<NUM_BUILTIN_DISPLAYS ; i++) { 128 mAllocatedDisplayIDs.markBit(i); 129 } 130 131 if (mHwc) { 132 ALOGI("Using %s version %u.%u", HWC_HARDWARE_COMPOSER, 133 (hwcApiVersion(mHwc) >> 24) & 0xff, 134 (hwcApiVersion(mHwc) >> 16) & 0xff); 135 if (mHwc->registerProcs) { 136 mCBContext->hwc = this; 137 mCBContext->procs.invalidate = &hook_invalidate; 138 mCBContext->procs.vsync = &hook_vsync; 139 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 140 mCBContext->procs.hotplug = &hook_hotplug; 141 else 142 mCBContext->procs.hotplug = NULL; 143 memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero)); 144 mHwc->registerProcs(mHwc, &mCBContext->procs); 145 } 146 147 // don't need a vsync thread if we have a hardware composer 148 needVSyncThread = false; 149 // always turn vsync off when we start 150 eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); 151 152 // the number of displays we actually have depends on the 153 // hw composer version 154 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 155 // 1.3 adds support for virtual displays 156 mNumDisplays = MAX_HWC_DISPLAYS; 157 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 158 // 1.1 adds support for multiple displays 159 mNumDisplays = NUM_BUILTIN_DISPLAYS; 160 } else { 161 mNumDisplays = 1; 162 } 163 } 164 165 if (mFbDev) { 166 ALOG_ASSERT(!(mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)), 167 "should only have fbdev if no hwc or hwc is 1.0"); 168 169 DisplayData& disp(mDisplayData[HWC_DISPLAY_PRIMARY]); 170 disp.connected = true; 171 disp.width = mFbDev->width; 172 disp.height = mFbDev->height; 173 disp.format = mFbDev->format; 174 disp.xdpi = mFbDev->xdpi; 175 disp.ydpi = mFbDev->ydpi; 176 if (disp.refresh == 0) { 177 disp.refresh = nsecs_t(1e9 / mFbDev->fps); 178 ALOGW("getting VSYNC period from fb HAL: %lld", disp.refresh); 179 } 180 if (disp.refresh == 0) { 181 disp.refresh = nsecs_t(1e9 / 60.0); 182 ALOGW("getting VSYNC period from thin air: %lld", 183 mDisplayData[HWC_DISPLAY_PRIMARY].refresh); 184 } 185 } else if (mHwc) { 186 // here we're guaranteed to have at least HWC 1.1 187 for (size_t i =0 ; i<NUM_BUILTIN_DISPLAYS ; i++) { 188 queryDisplayProperties(i); 189 } 190 } 191 192 if (needVSyncThread) { 193 // we don't have VSYNC support, we need to fake it 194 mVSyncThread = new VSyncThread(*this); 195 } 196} 197 198HWComposer::~HWComposer() { 199 if (mHwc) { 200 eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0); 201 } 202 if (mVSyncThread != NULL) { 203 mVSyncThread->requestExitAndWait(); 204 } 205 if (mHwc) { 206 hwc_close_1(mHwc); 207 } 208 if (mFbDev) { 209 framebuffer_close(mFbDev); 210 } 211 delete mCBContext; 212} 213 214// Load and prepare the hardware composer module. Sets mHwc. 215void HWComposer::loadHwcModule() 216{ 217 hw_module_t const* module; 218 219 if (hw_get_module(HWC_HARDWARE_MODULE_ID, &module) != 0) { 220 ALOGE("%s module not found", HWC_HARDWARE_MODULE_ID); 221 return; 222 } 223 224 int err = hwc_open_1(module, &mHwc); 225 if (err) { 226 ALOGE("%s device failed to initialize (%s)", 227 HWC_HARDWARE_COMPOSER, strerror(-err)); 228 return; 229 } 230 231 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_0) || 232 hwcHeaderVersion(mHwc) < MIN_HWC_HEADER_VERSION || 233 hwcHeaderVersion(mHwc) > HWC_HEADER_VERSION) { 234 ALOGE("%s device version %#x unsupported, will not be used", 235 HWC_HARDWARE_COMPOSER, mHwc->common.version); 236 hwc_close_1(mHwc); 237 mHwc = NULL; 238 return; 239 } 240} 241 242// Load and prepare the FB HAL, which uses the gralloc module. Sets mFbDev. 243int HWComposer::loadFbHalModule() 244{ 245 hw_module_t const* module; 246 247 int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module); 248 if (err != 0) { 249 ALOGE("%s module not found", GRALLOC_HARDWARE_MODULE_ID); 250 return err; 251 } 252 253 return framebuffer_open(module, &mFbDev); 254} 255 256status_t HWComposer::initCheck() const { 257 return mHwc ? NO_ERROR : NO_INIT; 258} 259 260void HWComposer::hook_invalidate(const struct hwc_procs* procs) { 261 cb_context* ctx = reinterpret_cast<cb_context*>( 262 const_cast<hwc_procs_t*>(procs)); 263 ctx->hwc->invalidate(); 264} 265 266void HWComposer::hook_vsync(const struct hwc_procs* procs, int disp, 267 int64_t timestamp) { 268 cb_context* ctx = reinterpret_cast<cb_context*>( 269 const_cast<hwc_procs_t*>(procs)); 270 ctx->hwc->vsync(disp, timestamp); 271} 272 273void HWComposer::hook_hotplug(const struct hwc_procs* procs, int disp, 274 int connected) { 275 cb_context* ctx = reinterpret_cast<cb_context*>( 276 const_cast<hwc_procs_t*>(procs)); 277 ctx->hwc->hotplug(disp, connected); 278} 279 280void HWComposer::invalidate() { 281 mFlinger->repaintEverything(); 282} 283 284void HWComposer::vsync(int disp, int64_t timestamp) { 285 if (uint32_t(disp) < HWC_NUM_PHYSICAL_DISPLAY_TYPES) { 286 char tag[16]; 287 snprintf(tag, sizeof(tag), "VSYNC_%1u", disp); 288 ATRACE_INT(tag, ++mVSyncCounts[disp] & 1); 289 290 mEventHandler.onVSyncReceived(disp, timestamp); 291 Mutex::Autolock _l(mLock); 292 mLastHwVSync[disp] = timestamp; 293 } 294} 295 296void HWComposer::hotplug(int disp, int connected) { 297 if (disp == HWC_DISPLAY_PRIMARY || disp >= VIRTUAL_DISPLAY_ID_BASE) { 298 ALOGE("hotplug event received for invalid display: disp=%d connected=%d", 299 disp, connected); 300 return; 301 } 302 queryDisplayProperties(disp); 303 mEventHandler.onHotplugReceived(disp, bool(connected)); 304} 305 306static float getDefaultDensity(uint32_t height) { 307 if (height >= 1080) return ACONFIGURATION_DENSITY_XHIGH; 308 else return ACONFIGURATION_DENSITY_TV; 309} 310 311static const uint32_t DISPLAY_ATTRIBUTES[] = { 312 HWC_DISPLAY_VSYNC_PERIOD, 313 HWC_DISPLAY_WIDTH, 314 HWC_DISPLAY_HEIGHT, 315 HWC_DISPLAY_DPI_X, 316 HWC_DISPLAY_DPI_Y, 317 HWC_DISPLAY_NO_ATTRIBUTE, 318}; 319#define NUM_DISPLAY_ATTRIBUTES (sizeof(DISPLAY_ATTRIBUTES) / sizeof(DISPLAY_ATTRIBUTES)[0]) 320 321status_t HWComposer::queryDisplayProperties(int disp) { 322 323 LOG_ALWAYS_FATAL_IF(!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); 324 325 // use zero as default value for unspecified attributes 326 int32_t values[NUM_DISPLAY_ATTRIBUTES - 1]; 327 memset(values, 0, sizeof(values)); 328 329 uint32_t config; 330 size_t numConfigs = 1; 331 status_t err = mHwc->getDisplayConfigs(mHwc, disp, &config, &numConfigs); 332 if (err != NO_ERROR) { 333 // this can happen if an unpluggable display is not connected 334 mDisplayData[disp].connected = false; 335 return err; 336 } 337 338 err = mHwc->getDisplayAttributes(mHwc, disp, config, DISPLAY_ATTRIBUTES, values); 339 if (err != NO_ERROR) { 340 // we can't get this display's info. turn it off. 341 mDisplayData[disp].connected = false; 342 return err; 343 } 344 345 int32_t w = 0, h = 0; 346 for (size_t i = 0; i < NUM_DISPLAY_ATTRIBUTES - 1; i++) { 347 switch (DISPLAY_ATTRIBUTES[i]) { 348 case HWC_DISPLAY_VSYNC_PERIOD: 349 mDisplayData[disp].refresh = nsecs_t(values[i]); 350 break; 351 case HWC_DISPLAY_WIDTH: 352 mDisplayData[disp].width = values[i]; 353 break; 354 case HWC_DISPLAY_HEIGHT: 355 mDisplayData[disp].height = values[i]; 356 break; 357 case HWC_DISPLAY_DPI_X: 358 mDisplayData[disp].xdpi = values[i] / 1000.0f; 359 break; 360 case HWC_DISPLAY_DPI_Y: 361 mDisplayData[disp].ydpi = values[i] / 1000.0f; 362 break; 363 default: 364 ALOG_ASSERT(false, "unknown display attribute[%d] %#x", 365 i, DISPLAY_ATTRIBUTES[i]); 366 break; 367 } 368 } 369 370 // FIXME: what should we set the format to? 371 mDisplayData[disp].format = HAL_PIXEL_FORMAT_RGBA_8888; 372 mDisplayData[disp].connected = true; 373 if (mDisplayData[disp].xdpi == 0.0f || mDisplayData[disp].ydpi == 0.0f) { 374 float dpi = getDefaultDensity(h); 375 mDisplayData[disp].xdpi = dpi; 376 mDisplayData[disp].ydpi = dpi; 377 } 378 return NO_ERROR; 379} 380 381status_t HWComposer::setVirtualDisplayProperties(int32_t id, 382 uint32_t w, uint32_t h, uint32_t format) { 383 if (id < VIRTUAL_DISPLAY_ID_BASE || id >= int32_t(mNumDisplays) || 384 !mAllocatedDisplayIDs.hasBit(id)) { 385 return BAD_INDEX; 386 } 387 mDisplayData[id].width = w; 388 mDisplayData[id].height = h; 389 mDisplayData[id].format = format; 390 mDisplayData[id].xdpi = mDisplayData[id].ydpi = getDefaultDensity(h); 391 return NO_ERROR; 392} 393 394int32_t HWComposer::allocateDisplayId() { 395 if (mAllocatedDisplayIDs.count() >= mNumDisplays) { 396 return NO_MEMORY; 397 } 398 int32_t id = mAllocatedDisplayIDs.firstUnmarkedBit(); 399 mAllocatedDisplayIDs.markBit(id); 400 mDisplayData[id].connected = true; 401 return id; 402} 403 404status_t HWComposer::freeDisplayId(int32_t id) { 405 if (id < NUM_BUILTIN_DISPLAYS) { 406 // cannot free the reserved IDs 407 return BAD_VALUE; 408 } 409 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 410 return BAD_INDEX; 411 } 412 mAllocatedDisplayIDs.clearBit(id); 413 mDisplayData[id].connected = false; 414 return NO_ERROR; 415} 416 417nsecs_t HWComposer::getRefreshPeriod(int disp) const { 418 return mDisplayData[disp].refresh; 419} 420 421nsecs_t HWComposer::getRefreshTimestamp(int disp) const { 422 // this returns the last refresh timestamp. 423 // if the last one is not available, we estimate it based on 424 // the refresh period and whatever closest timestamp we have. 425 Mutex::Autolock _l(mLock); 426 nsecs_t now = systemTime(CLOCK_MONOTONIC); 427 return now - ((now - mLastHwVSync[disp]) % mDisplayData[disp].refresh); 428} 429 430sp<Fence> HWComposer::getDisplayFence(int disp) const { 431 return mDisplayData[disp].lastDisplayFence; 432} 433 434uint32_t HWComposer::getWidth(int disp) const { 435 return mDisplayData[disp].width; 436} 437 438uint32_t HWComposer::getHeight(int disp) const { 439 return mDisplayData[disp].height; 440} 441 442uint32_t HWComposer::getFormat(int disp) const { 443 return mDisplayData[disp].format; 444} 445 446float HWComposer::getDpiX(int disp) const { 447 return mDisplayData[disp].xdpi; 448} 449 450float HWComposer::getDpiY(int disp) const { 451 return mDisplayData[disp].ydpi; 452} 453 454bool HWComposer::isConnected(int disp) const { 455 return mDisplayData[disp].connected; 456} 457 458void HWComposer::eventControl(int disp, int event, int enabled) { 459 if (uint32_t(disp)>31 || !mAllocatedDisplayIDs.hasBit(disp)) { 460 ALOGD("eventControl ignoring event %d on unallocated disp %d (en=%d)", 461 event, disp, enabled); 462 return; 463 } 464 if (event != EVENT_VSYNC) { 465 ALOGW("eventControl got unexpected event %d (disp=%d en=%d)", 466 event, disp, enabled); 467 return; 468 } 469 status_t err = NO_ERROR; 470 if (mHwc && !mDebugForceFakeVSync) { 471 // NOTE: we use our own internal lock here because we have to call 472 // into the HWC with the lock held, and we want to make sure 473 // that even if HWC blocks (which it shouldn't), it won't 474 // affect other threads. 475 Mutex::Autolock _l(mEventControlLock); 476 const int32_t eventBit = 1UL << event; 477 const int32_t newValue = enabled ? eventBit : 0; 478 const int32_t oldValue = mDisplayData[disp].events & eventBit; 479 if (newValue != oldValue) { 480 ATRACE_CALL(); 481 err = mHwc->eventControl(mHwc, disp, event, enabled); 482 if (!err) { 483 int32_t& events(mDisplayData[disp].events); 484 events = (events & ~eventBit) | newValue; 485 } 486 } 487 // error here should not happen -- not sure what we should 488 // do if it does. 489 ALOGE_IF(err, "eventControl(%d, %d) failed %s", 490 event, enabled, strerror(-err)); 491 } 492 493 if (err == NO_ERROR && mVSyncThread != NULL) { 494 mVSyncThread->setEnabled(enabled); 495 } 496} 497 498status_t HWComposer::createWorkList(int32_t id, size_t numLayers) { 499 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 500 return BAD_INDEX; 501 } 502 503 if (mHwc) { 504 DisplayData& disp(mDisplayData[id]); 505 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 506 // we need space for the HWC_FRAMEBUFFER_TARGET 507 numLayers++; 508 } 509 if (disp.capacity < numLayers || disp.list == NULL) { 510 size_t size = sizeof(hwc_display_contents_1_t) 511 + numLayers * sizeof(hwc_layer_1_t); 512 free(disp.list); 513 disp.list = (hwc_display_contents_1_t*)malloc(size); 514 disp.capacity = numLayers; 515 } 516 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 517 disp.framebufferTarget = &disp.list->hwLayers[numLayers - 1]; 518 memset(disp.framebufferTarget, 0, sizeof(hwc_layer_1_t)); 519 const hwc_rect_t r = { 0, 0, (int) disp.width, (int) disp.height }; 520 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; 521 disp.framebufferTarget->hints = 0; 522 disp.framebufferTarget->flags = 0; 523 disp.framebufferTarget->handle = disp.fbTargetHandle; 524 disp.framebufferTarget->transform = 0; 525 disp.framebufferTarget->blending = HWC_BLENDING_PREMULT; 526 disp.framebufferTarget->sourceCrop = r; 527 disp.framebufferTarget->displayFrame = r; 528 disp.framebufferTarget->visibleRegionScreen.numRects = 1; 529 disp.framebufferTarget->visibleRegionScreen.rects = 530 &disp.framebufferTarget->displayFrame; 531 disp.framebufferTarget->acquireFenceFd = -1; 532 disp.framebufferTarget->releaseFenceFd = -1; 533 disp.framebufferTarget->planeAlpha = 0xFF; 534 } 535 disp.list->retireFenceFd = -1; 536 disp.list->flags = HWC_GEOMETRY_CHANGED; 537 disp.list->numHwLayers = numLayers; 538 } 539 return NO_ERROR; 540} 541 542status_t HWComposer::setFramebufferTarget(int32_t id, 543 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buf) { 544 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 545 return BAD_INDEX; 546 } 547 DisplayData& disp(mDisplayData[id]); 548 if (!disp.framebufferTarget) { 549 // this should never happen, but apparently eglCreateWindowSurface() 550 // triggers a Surface::queueBuffer() on some 551 // devices (!?) -- log and ignore. 552 ALOGE("HWComposer: framebufferTarget is null"); 553 return NO_ERROR; 554 } 555 556 int acquireFenceFd = -1; 557 if (acquireFence->isValid()) { 558 acquireFenceFd = acquireFence->dup(); 559 } 560 561 // ALOGD("fbPost: handle=%p, fence=%d", buf->handle, acquireFenceFd); 562 disp.fbTargetHandle = buf->handle; 563 disp.framebufferTarget->handle = disp.fbTargetHandle; 564 disp.framebufferTarget->acquireFenceFd = acquireFenceFd; 565 return NO_ERROR; 566} 567 568status_t HWComposer::prepare() { 569 for (size_t i=0 ; i<mNumDisplays ; i++) { 570 DisplayData& disp(mDisplayData[i]); 571 if (disp.framebufferTarget) { 572 // make sure to reset the type to HWC_FRAMEBUFFER_TARGET 573 // DO NOT reset the handle field to NULL, because it's possible 574 // that we have nothing to redraw (eg: eglSwapBuffers() not called) 575 // in which case, we should continue to use the same buffer. 576 LOG_FATAL_IF(disp.list == NULL); 577 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; 578 } 579 if (!disp.connected && disp.list != NULL) { 580 ALOGW("WARNING: disp %d: connected, non-null list, layers=%d", 581 i, disp.list->numHwLayers); 582 } 583 mLists[i] = disp.list; 584 if (mLists[i]) { 585 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 586 mLists[i]->outbuf = NULL; 587 mLists[i]->outbufAcquireFenceFd = -1; 588 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 589 // garbage data to catch improper use 590 mLists[i]->dpy = (hwc_display_t)0xDEADBEEF; 591 mLists[i]->sur = (hwc_surface_t)0xDEADBEEF; 592 } else { 593 mLists[i]->dpy = EGL_NO_DISPLAY; 594 mLists[i]->sur = EGL_NO_SURFACE; 595 } 596 } 597 } 598 599 int err = mHwc->prepare(mHwc, mNumDisplays, mLists); 600 ALOGE_IF(err, "HWComposer: prepare failed (%s)", strerror(-err)); 601 602 if (err == NO_ERROR) { 603 // here we're just making sure that "skip" layers are set 604 // to HWC_FRAMEBUFFER and we're also counting how many layers 605 // we have of each type. 606 for (size_t i=0 ; i<mNumDisplays ; i++) { 607 DisplayData& disp(mDisplayData[i]); 608 disp.hasFbComp = false; 609 disp.hasOvComp = false; 610 if (disp.list) { 611 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 612 hwc_layer_1_t& l = disp.list->hwLayers[i]; 613 614 //ALOGD("prepare: %d, type=%d, handle=%p", 615 // i, l.compositionType, l.handle); 616 617 if (l.flags & HWC_SKIP_LAYER) { 618 l.compositionType = HWC_FRAMEBUFFER; 619 } 620 if (l.compositionType == HWC_FRAMEBUFFER) { 621 disp.hasFbComp = true; 622 } 623 if (l.compositionType == HWC_OVERLAY) { 624 disp.hasOvComp = true; 625 } 626 } 627 } 628 } 629 } 630 return (status_t)err; 631} 632 633bool HWComposer::hasHwcComposition(int32_t id) const { 634 if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 635 return false; 636 return mDisplayData[id].hasOvComp; 637} 638 639bool HWComposer::hasGlesComposition(int32_t id) const { 640 if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 641 return true; 642 return mDisplayData[id].hasFbComp; 643} 644 645sp<Fence> HWComposer::getAndResetReleaseFence(int32_t id) { 646 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 647 return Fence::NO_FENCE; 648 649 int fd = INVALID_OPERATION; 650 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 651 const DisplayData& disp(mDisplayData[id]); 652 if (disp.framebufferTarget) { 653 fd = disp.framebufferTarget->releaseFenceFd; 654 disp.framebufferTarget->acquireFenceFd = -1; 655 disp.framebufferTarget->releaseFenceFd = -1; 656 } 657 } 658 return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE; 659} 660 661status_t HWComposer::commit() { 662 int err = NO_ERROR; 663 if (mHwc) { 664 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 665 // On version 1.0, the OpenGL ES target surface is communicated 666 // by the (dpy, sur) fields and we are guaranteed to have only 667 // a single display. 668 mLists[0]->dpy = eglGetCurrentDisplay(); 669 mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW); 670 } 671 672 for (size_t i=VIRTUAL_DISPLAY_ID_BASE; i<mNumDisplays; i++) { 673 DisplayData& disp(mDisplayData[i]); 674 if (disp.outbufHandle) { 675 mLists[i]->outbuf = disp.outbufHandle; 676 mLists[i]->outbufAcquireFenceFd = 677 disp.outbufAcquireFence->dup(); 678 } 679 } 680 681 err = mHwc->set(mHwc, mNumDisplays, mLists); 682 683 for (size_t i=0 ; i<mNumDisplays ; i++) { 684 DisplayData& disp(mDisplayData[i]); 685 disp.lastDisplayFence = disp.lastRetireFence; 686 disp.lastRetireFence = Fence::NO_FENCE; 687 if (disp.list) { 688 if (disp.list->retireFenceFd != -1) { 689 disp.lastRetireFence = new Fence(disp.list->retireFenceFd); 690 disp.list->retireFenceFd = -1; 691 } 692 disp.list->flags &= ~HWC_GEOMETRY_CHANGED; 693 } 694 } 695 } 696 return (status_t)err; 697} 698 699status_t HWComposer::release(int disp) { 700 LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE); 701 if (mHwc) { 702 eventControl(disp, HWC_EVENT_VSYNC, 0); 703 return (status_t)mHwc->blank(mHwc, disp, 1); 704 } 705 return NO_ERROR; 706} 707 708status_t HWComposer::acquire(int disp) { 709 LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE); 710 if (mHwc) { 711 return (status_t)mHwc->blank(mHwc, disp, 0); 712 } 713 return NO_ERROR; 714} 715 716void HWComposer::disconnectDisplay(int disp) { 717 LOG_ALWAYS_FATAL_IF(disp < 0 || disp == HWC_DISPLAY_PRIMARY); 718 DisplayData& dd(mDisplayData[disp]); 719 free(dd.list); 720 dd.list = NULL; 721 dd.framebufferTarget = NULL; // points into dd.list 722 dd.fbTargetHandle = NULL; 723 dd.outbufHandle = NULL; 724 dd.lastRetireFence = Fence::NO_FENCE; 725 dd.lastDisplayFence = Fence::NO_FENCE; 726 dd.outbufAcquireFence = Fence::NO_FENCE; 727} 728 729int HWComposer::getVisualID() const { 730 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 731 // FIXME: temporary hack until HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED 732 // is supported by the implementation. we can only be in this case 733 // if we have HWC 1.1 734 return HAL_PIXEL_FORMAT_RGBA_8888; 735 //return HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED; 736 } else { 737 return mFbDev->format; 738 } 739} 740 741bool HWComposer::supportsFramebufferTarget() const { 742 return (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); 743} 744 745int HWComposer::fbPost(int32_t id, 746 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buffer) { 747 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 748 return setFramebufferTarget(id, acquireFence, buffer); 749 } else { 750 acquireFence->waitForever("HWComposer::fbPost"); 751 return mFbDev->post(mFbDev, buffer->handle); 752 } 753} 754 755int HWComposer::fbCompositionComplete() { 756 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 757 return NO_ERROR; 758 759 if (mFbDev->compositionComplete) { 760 return mFbDev->compositionComplete(mFbDev); 761 } else { 762 return INVALID_OPERATION; 763 } 764} 765 766void HWComposer::fbDump(String8& result) { 767 if (mFbDev && mFbDev->common.version >= 1 && mFbDev->dump) { 768 const size_t SIZE = 4096; 769 char buffer[SIZE]; 770 mFbDev->dump(mFbDev, buffer, SIZE); 771 result.append(buffer); 772 } 773} 774 775status_t HWComposer::setOutputBuffer(int32_t id, const sp<Fence>& acquireFence, 776 const sp<GraphicBuffer>& buf) { 777 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 778 return BAD_INDEX; 779 if (id < VIRTUAL_DISPLAY_ID_BASE) 780 return INVALID_OPERATION; 781 782 DisplayData& disp(mDisplayData[id]); 783 disp.outbufHandle = buf->handle; 784 disp.outbufAcquireFence = acquireFence; 785 return NO_ERROR; 786} 787 788sp<Fence> HWComposer::getLastRetireFence(int32_t id) { 789 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 790 return Fence::NO_FENCE; 791 return mDisplayData[id].lastRetireFence; 792} 793 794/* 795 * Helper template to implement a concrete HWCLayer 796 * This holds the pointer to the concrete hwc layer type 797 * and implements the "iterable" side of HWCLayer. 798 */ 799template<typename CONCRETE, typename HWCTYPE> 800class Iterable : public HWComposer::HWCLayer { 801protected: 802 HWCTYPE* const mLayerList; 803 HWCTYPE* mCurrentLayer; 804 Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer) { } 805 inline HWCTYPE const * getLayer() const { return mCurrentLayer; } 806 inline HWCTYPE* getLayer() { return mCurrentLayer; } 807 virtual ~Iterable() { } 808private: 809 // returns a copy of ourselves 810 virtual HWComposer::HWCLayer* dup() { 811 return new CONCRETE( static_cast<const CONCRETE&>(*this) ); 812 } 813 virtual status_t setLayer(size_t index) { 814 mCurrentLayer = &mLayerList[index]; 815 return NO_ERROR; 816 } 817}; 818 819/* 820 * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0. 821 * This implements the HWCLayer side of HWCIterableLayer. 822 */ 823class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> { 824 struct hwc_composer_device_1* mHwc; 825public: 826 HWCLayerVersion1(struct hwc_composer_device_1* hwc, hwc_layer_1_t* layer) 827 : Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer), mHwc(hwc) { } 828 829 virtual int32_t getCompositionType() const { 830 return getLayer()->compositionType; 831 } 832 virtual uint32_t getHints() const { 833 return getLayer()->hints; 834 } 835 virtual sp<Fence> getAndResetReleaseFence() { 836 int fd = getLayer()->releaseFenceFd; 837 getLayer()->releaseFenceFd = -1; 838 return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE; 839 } 840 virtual void setAcquireFenceFd(int fenceFd) { 841 getLayer()->acquireFenceFd = fenceFd; 842 } 843 virtual void setPerFrameDefaultState() { 844 //getLayer()->compositionType = HWC_FRAMEBUFFER; 845 } 846 virtual void setPlaneAlpha(uint8_t alpha) { 847 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) { 848 getLayer()->planeAlpha = alpha; 849 } else { 850 if (alpha < 0xFF) { 851 getLayer()->flags |= HWC_SKIP_LAYER; 852 } 853 } 854 } 855 virtual void setDefaultState() { 856 hwc_layer_1_t* const l = getLayer(); 857 l->compositionType = HWC_FRAMEBUFFER; 858 l->hints = 0; 859 l->flags = HWC_SKIP_LAYER; 860 l->handle = 0; 861 l->transform = 0; 862 l->blending = HWC_BLENDING_NONE; 863 l->visibleRegionScreen.numRects = 0; 864 l->visibleRegionScreen.rects = NULL; 865 l->acquireFenceFd = -1; 866 l->releaseFenceFd = -1; 867 l->planeAlpha = 0xFF; 868 } 869 virtual void setSkip(bool skip) { 870 if (skip) { 871 getLayer()->flags |= HWC_SKIP_LAYER; 872 } else { 873 getLayer()->flags &= ~HWC_SKIP_LAYER; 874 } 875 } 876 virtual void setBlending(uint32_t blending) { 877 getLayer()->blending = blending; 878 } 879 virtual void setTransform(uint32_t transform) { 880 getLayer()->transform = transform; 881 } 882 virtual void setFrame(const Rect& frame) { 883 getLayer()->displayFrame = reinterpret_cast<hwc_rect_t const&>(frame); 884 } 885 virtual void setCrop(const FloatRect& crop) { 886 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 887 getLayer()->sourceCropf = reinterpret_cast<hwc_frect_t const&>(crop); 888 } else { 889 /* 890 * Since h/w composer didn't support a flot crop rect before version 1.3, 891 * using integer coordinates instead produces a different output from the GL code in 892 * Layer::drawWithOpenGL(). The difference can be large if the buffer crop to 893 * window size ratio is large and a window crop is defined 894 * (i.e.: if we scale the buffer a lot and we also crop it with a window crop). 895 */ 896 hwc_rect_t& r = getLayer()->sourceCrop; 897 r.left = int(ceilf(crop.left)); 898 r.top = int(ceilf(crop.top)); 899 r.right = int(floorf(crop.right)); 900 r.bottom= int(floorf(crop.bottom)); 901 } 902 } 903 virtual void setVisibleRegionScreen(const Region& reg) { 904 // Region::getSharedBuffer creates a reference to the underlying 905 // SharedBuffer of this Region, this reference is freed 906 // in onDisplayed() 907 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 908 SharedBuffer const* sb = reg.getSharedBuffer(&visibleRegion.numRects); 909 visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(sb->data()); 910 } 911 virtual void setBuffer(const sp<GraphicBuffer>& buffer) { 912 if (buffer == 0 || buffer->handle == 0) { 913 getLayer()->compositionType = HWC_FRAMEBUFFER; 914 getLayer()->flags |= HWC_SKIP_LAYER; 915 getLayer()->handle = 0; 916 } else { 917 getLayer()->handle = buffer->handle; 918 } 919 } 920 virtual void onDisplayed() { 921 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 922 SharedBuffer const* sb = SharedBuffer::bufferFromData(visibleRegion.rects); 923 if (sb) { 924 sb->release(); 925 // not technically needed but safer 926 visibleRegion.numRects = 0; 927 visibleRegion.rects = NULL; 928 } 929 930 getLayer()->acquireFenceFd = -1; 931 } 932}; 933 934/* 935 * returns an iterator initialized at a given index in the layer list 936 */ 937HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) { 938 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 939 return LayerListIterator(); 940 } 941 const DisplayData& disp(mDisplayData[id]); 942 if (!mHwc || !disp.list || index > disp.list->numHwLayers) { 943 return LayerListIterator(); 944 } 945 return LayerListIterator(new HWCLayerVersion1(mHwc, disp.list->hwLayers), index); 946} 947 948/* 949 * returns an iterator on the beginning of the layer list 950 */ 951HWComposer::LayerListIterator HWComposer::begin(int32_t id) { 952 return getLayerIterator(id, 0); 953} 954 955/* 956 * returns an iterator on the end of the layer list 957 */ 958HWComposer::LayerListIterator HWComposer::end(int32_t id) { 959 size_t numLayers = 0; 960 if (uint32_t(id) <= 31 && mAllocatedDisplayIDs.hasBit(id)) { 961 const DisplayData& disp(mDisplayData[id]); 962 if (mHwc && disp.list) { 963 numLayers = disp.list->numHwLayers; 964 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 965 // with HWC 1.1, the last layer is always the HWC_FRAMEBUFFER_TARGET, 966 // which we ignore when iterating through the layer list. 967 ALOGE_IF(!numLayers, "mDisplayData[%d].list->numHwLayers is 0", id); 968 if (numLayers) { 969 numLayers--; 970 } 971 } 972 } 973 } 974 return getLayerIterator(id, numLayers); 975} 976 977void HWComposer::dump(String8& result) const { 978 if (mHwc) { 979 result.appendFormat("Hardware Composer state (version %8x):\n", hwcApiVersion(mHwc)); 980 result.appendFormat(" mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync); 981 for (size_t i=0 ; i<mNumDisplays ; i++) { 982 const DisplayData& disp(mDisplayData[i]); 983 if (!disp.connected) 984 continue; 985 986 const Vector< sp<Layer> >& visibleLayersSortedByZ = 987 mFlinger->getLayerSortedByZForHwcDisplay(i); 988 989 result.appendFormat( 990 " Display[%d] : %ux%u, xdpi=%f, ydpi=%f, refresh=%lld\n", 991 i, disp.width, disp.height, disp.xdpi, disp.ydpi, disp.refresh); 992 993 if (disp.list) { 994 result.appendFormat( 995 " numHwLayers=%u, flags=%08x\n", 996 disp.list->numHwLayers, disp.list->flags); 997 998 result.append( 999 " type | handle | hints | flags | tr | blend | format | source crop | frame name \n" 1000 "------------+----------+----------+----------+----+-------+----------+---------------------------------+--------------------------------\n"); 1001 // " __________ | ________ | ________ | ________ | __ | _____ | ________ | [_____._,_____._,_____._,_____._] | [_____,_____,_____,_____] 1002 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 1003 const hwc_layer_1_t&l = disp.list->hwLayers[i]; 1004 int32_t format = -1; 1005 String8 name("unknown"); 1006 1007 if (i < visibleLayersSortedByZ.size()) { 1008 const sp<Layer>& layer(visibleLayersSortedByZ[i]); 1009 const sp<GraphicBuffer>& buffer( 1010 layer->getActiveBuffer()); 1011 if (buffer != NULL) { 1012 format = buffer->getPixelFormat(); 1013 } 1014 name = layer->getName(); 1015 } 1016 1017 int type = l.compositionType; 1018 if (type == HWC_FRAMEBUFFER_TARGET) { 1019 name = "HWC_FRAMEBUFFER_TARGET"; 1020 format = disp.format; 1021 } 1022 1023 static char const* compositionTypeName[] = { 1024 "GLES", 1025 "HWC", 1026 "BACKGROUND", 1027 "FB TARGET", 1028 "UNKNOWN"}; 1029 if (type >= NELEM(compositionTypeName)) 1030 type = NELEM(compositionTypeName) - 1; 1031 1032 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) { 1033 result.appendFormat( 1034 " %10s | %08x | %08x | %08x | %02x | %05x | %08x | [%7.1f,%7.1f,%7.1f,%7.1f] | [%5d,%5d,%5d,%5d] %s\n", 1035 compositionTypeName[type], 1036 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format, 1037 l.sourceCropf.left, l.sourceCropf.top, l.sourceCropf.right, l.sourceCropf.bottom, 1038 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, 1039 name.string()); 1040 } else { 1041 result.appendFormat( 1042 " %10s | %08x | %08x | %08x | %02x | %05x | %08x | [%7d,%7d,%7d,%7d] | [%5d,%5d,%5d,%5d] %s\n", 1043 compositionTypeName[type], 1044 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format, 1045 l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom, 1046 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, 1047 name.string()); 1048 } 1049 } 1050 } 1051 } 1052 } 1053 1054 if (mHwc && mHwc->dump) { 1055 const size_t SIZE = 4096; 1056 char buffer[SIZE]; 1057 mHwc->dump(mHwc, buffer, SIZE); 1058 result.append(buffer); 1059 } 1060} 1061 1062// --------------------------------------------------------------------------- 1063 1064HWComposer::VSyncThread::VSyncThread(HWComposer& hwc) 1065 : mHwc(hwc), mEnabled(false), 1066 mNextFakeVSync(0), 1067 mRefreshPeriod(hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY)) 1068{ 1069} 1070 1071void HWComposer::VSyncThread::setEnabled(bool enabled) { 1072 Mutex::Autolock _l(mLock); 1073 if (mEnabled != enabled) { 1074 mEnabled = enabled; 1075 mCondition.signal(); 1076 } 1077} 1078 1079void HWComposer::VSyncThread::onFirstRef() { 1080 run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE); 1081} 1082 1083bool HWComposer::VSyncThread::threadLoop() { 1084 { // scope for lock 1085 Mutex::Autolock _l(mLock); 1086 while (!mEnabled) { 1087 mCondition.wait(mLock); 1088 } 1089 } 1090 1091 const nsecs_t period = mRefreshPeriod; 1092 const nsecs_t now = systemTime(CLOCK_MONOTONIC); 1093 nsecs_t next_vsync = mNextFakeVSync; 1094 nsecs_t sleep = next_vsync - now; 1095 if (sleep < 0) { 1096 // we missed, find where the next vsync should be 1097 sleep = (period - ((now - next_vsync) % period)); 1098 next_vsync = now + sleep; 1099 } 1100 mNextFakeVSync = next_vsync + period; 1101 1102 struct timespec spec; 1103 spec.tv_sec = next_vsync / 1000000000; 1104 spec.tv_nsec = next_vsync % 1000000000; 1105 1106 int err; 1107 do { 1108 err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL); 1109 } while (err<0 && errno == EINTR); 1110 1111 if (err == 0) { 1112 mHwc.mEventHandler.onVSyncReceived(0, next_vsync); 1113 } 1114 1115 return true; 1116} 1117 1118HWComposer::DisplayData::DisplayData() 1119: width(0), height(0), format(0), 1120 xdpi(0.0f), ydpi(0.0f), 1121 refresh(0), 1122 connected(false), 1123 hasFbComp(false), hasOvComp(false), 1124 capacity(0), list(NULL), 1125 framebufferTarget(NULL), fbTargetHandle(0), 1126 lastRetireFence(Fence::NO_FENCE), lastDisplayFence(Fence::NO_FENCE), 1127 outbufHandle(NULL), outbufAcquireFence(Fence::NO_FENCE), 1128 events(0) 1129{} 1130 1131HWComposer::DisplayData::~DisplayData() { 1132 free(list); 1133} 1134 1135// --------------------------------------------------------------------------- 1136}; // namespace android 1137