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/CallStack.h> 29 #include <utils/Errors.h> 30 #include <utils/misc.h> 31 #include <utils/String8.h> 32 #include <utils/Thread.h> 33 #include <utils/Trace.h> 34 #include <utils/Vector.h> 35 36 #include <ui/GraphicBuffer.h> 37 38 #include <hardware/hardware.h> 39 #include <hardware/hwcomposer.h> 40 41 #include <android/configuration.h> 42 43 #include <cutils/log.h> 44 #include <cutils/properties.h> 45 46 #include "HWComposer.h" 47 48 #include "../Layer.h" // needed only for debugging 49 #include "../SurfaceFlinger.h" 50 51 namespace android { 52 53 // This is not a real HWC version. It's used for in-development features that 54 // haven't been committed to a specific real HWC version. 55 #define HWC_DEVICE_API_VERSION_1_EXP HARDWARE_DEVICE_API_VERSION_2(1, 0xFF, HWC_HEADER_VERSION) 56 57 #define MIN_HWC_HEADER_VERSION HWC_HEADER_VERSION 58 59 #define NUM_PHYSICAL_DISPLAYS HWC_NUM_DISPLAY_TYPES 60 #define VIRTUAL_DISPLAY_ID_BASE HWC_NUM_DISPLAY_TYPES 61 62 static uint32_t hwcApiVersion(const hwc_composer_device_1_t* hwc) { 63 uint32_t hwcVersion = hwc->common.version; 64 return hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK; 65 } 66 67 static uint32_t hwcHeaderVersion(const hwc_composer_device_1_t* hwc) { 68 uint32_t hwcVersion = hwc->common.version; 69 return hwcVersion & HARDWARE_API_VERSION_2_HEADER_MASK; 70 } 71 72 static bool hwcHasApiVersion(const hwc_composer_device_1_t* hwc, 73 uint32_t version) { 74 return hwcApiVersion(hwc) >= (version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK); 75 } 76 77 // --------------------------------------------------------------------------- 78 79 struct HWComposer::cb_context { 80 struct callbacks : public hwc_procs_t { 81 // these are here to facilitate the transition when adding 82 // new callbacks (an implementation can check for NULL before 83 // calling a new callback). 84 void (*zero[4])(void); 85 }; 86 callbacks procs; 87 HWComposer* hwc; 88 }; 89 90 // --------------------------------------------------------------------------- 91 92 HWComposer::HWComposer( 93 const sp<SurfaceFlinger>& flinger, 94 EventHandler& handler) 95 : mFlinger(flinger), 96 mFbDev(0), mHwc(0), mNumDisplays(1), 97 mCBContext(new cb_context), 98 mEventHandler(handler), 99 mVSyncCount(0), mDebugForceFakeVSync(false) 100 { 101 for (size_t i =0 ; i<MAX_DISPLAYS ; i++) { 102 mLists[i] = 0; 103 } 104 105 char value[PROPERTY_VALUE_MAX]; 106 property_get("debug.sf.no_hw_vsync", value, "0"); 107 mDebugForceFakeVSync = atoi(value); 108 109 bool needVSyncThread = true; 110 111 // Note: some devices may insist that the FB HAL be opened before HWC. 112 int fberr = loadFbHalModule(); 113 loadHwcModule(); 114 115 if (mFbDev && mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 116 // close FB HAL if we don't needed it. 117 // FIXME: this is temporary until we're not forced to open FB HAL 118 // before HWC. 119 framebuffer_close(mFbDev); 120 mFbDev = NULL; 121 } 122 123 // If we have no HWC, or a pre-1.1 HWC, an FB dev is mandatory. 124 if ((!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 125 && !mFbDev) { 126 ALOGE("ERROR: failed to open framebuffer (%s), aborting", 127 strerror(-fberr)); 128 abort(); 129 } 130 131 // these display IDs are always reserved 132 for (size_t i=0 ; i<NUM_PHYSICAL_DISPLAYS ; 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_EXP)) { 160 // 1.?? 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 = NUM_PHYSICAL_DISPLAYS; 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<NUM_PHYSICAL_DISPLAYS ; 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 } 202 203 HWComposer::~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. 220 void 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. 248 int HWComposer::loadFbHalModule() 249 { 250 hw_module_t const* module; 251 252 int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module); 253 if (err != 0) { 254 ALOGE("%s module not found", GRALLOC_HARDWARE_MODULE_ID); 255 return err; 256 } 257 258 return framebuffer_open(module, &mFbDev); 259 } 260 261 status_t HWComposer::initCheck() const { 262 return mHwc ? NO_ERROR : NO_INIT; 263 } 264 265 void HWComposer::hook_invalidate(const struct hwc_procs* procs) { 266 cb_context* ctx = reinterpret_cast<cb_context*>( 267 const_cast<hwc_procs_t*>(procs)); 268 ctx->hwc->invalidate(); 269 } 270 271 void HWComposer::hook_vsync(const struct hwc_procs* procs, int disp, 272 int64_t timestamp) { 273 cb_context* ctx = reinterpret_cast<cb_context*>( 274 const_cast<hwc_procs_t*>(procs)); 275 ctx->hwc->vsync(disp, timestamp); 276 } 277 278 void HWComposer::hook_hotplug(const struct hwc_procs* procs, int disp, 279 int connected) { 280 cb_context* ctx = reinterpret_cast<cb_context*>( 281 const_cast<hwc_procs_t*>(procs)); 282 ctx->hwc->hotplug(disp, connected); 283 } 284 285 void HWComposer::invalidate() { 286 mFlinger->repaintEverything(); 287 } 288 289 void HWComposer::vsync(int disp, int64_t timestamp) { 290 ATRACE_INT("VSYNC", ++mVSyncCount&1); 291 mEventHandler.onVSyncReceived(disp, timestamp); 292 Mutex::Autolock _l(mLock); 293 mLastHwVSync = timestamp; 294 } 295 296 void 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 } 305 306 static float getDefaultDensity(uint32_t height) { 307 if (height >= 1080) return ACONFIGURATION_DENSITY_XHIGH; 308 else return ACONFIGURATION_DENSITY_TV; 309 } 310 311 static 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]) 320 321 status_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 } 380 381 status_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 } 393 394 int32_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 } 403 404 status_t HWComposer::freeDisplayId(int32_t id) { 405 if (id < NUM_PHYSICAL_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 } 416 417 nsecs_t HWComposer::getRefreshPeriod(int disp) const { 418 return mDisplayData[disp].refresh; 419 } 420 421 nsecs_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) % mDisplayData[disp].refresh); 428 } 429 430 sp<Fence> HWComposer::getDisplayFence(int disp) const { 431 return mDisplayData[disp].lastDisplayFence; 432 } 433 434 uint32_t HWComposer::getWidth(int disp) const { 435 return mDisplayData[disp].width; 436 } 437 438 uint32_t HWComposer::getHeight(int disp) const { 439 return mDisplayData[disp].height; 440 } 441 442 uint32_t HWComposer::getFormat(int disp) const { 443 return mDisplayData[disp].format; 444 } 445 446 float HWComposer::getDpiX(int disp) const { 447 return mDisplayData[disp].xdpi; 448 } 449 450 float HWComposer::getDpiY(int disp) const { 451 return mDisplayData[disp].ydpi; 452 } 453 454 bool HWComposer::isConnected(int disp) const { 455 return mDisplayData[disp].connected; 456 } 457 458 void 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 } 497 498 status_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 } 541 542 status_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 // CallStack stack; 554 // stack.update(); 555 // stack.dump(""); 556 return NO_ERROR; 557 } 558 559 int acquireFenceFd = -1; 560 if (acquireFence->isValid()) { 561 acquireFenceFd = acquireFence->dup(); 562 } 563 564 // ALOGD("fbPost: handle=%p, fence=%d", buf->handle, acquireFenceFd); 565 disp.fbTargetHandle = buf->handle; 566 disp.framebufferTarget->handle = disp.fbTargetHandle; 567 disp.framebufferTarget->acquireFenceFd = acquireFenceFd; 568 return NO_ERROR; 569 } 570 571 status_t HWComposer::prepare() { 572 for (size_t i=0 ; i<mNumDisplays ; i++) { 573 DisplayData& disp(mDisplayData[i]); 574 if (disp.framebufferTarget) { 575 // make sure to reset the type to HWC_FRAMEBUFFER_TARGET 576 // DO NOT reset the handle field to NULL, because it's possible 577 // that we have nothing to redraw (eg: eglSwapBuffers() not called) 578 // in which case, we should continue to use the same buffer. 579 LOG_FATAL_IF(disp.list == NULL); 580 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET; 581 } 582 if (!disp.connected && disp.list != NULL) { 583 ALOGW("WARNING: disp %d: connected, non-null list, layers=%d", 584 i, disp.list->numHwLayers); 585 } 586 mLists[i] = disp.list; 587 if (mLists[i]) { 588 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_EXP)) { 589 mLists[i]->outbuf = NULL; 590 mLists[i]->outbufAcquireFenceFd = -1; 591 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 592 // garbage data to catch improper use 593 mLists[i]->dpy = (hwc_display_t)0xDEADBEEF; 594 mLists[i]->sur = (hwc_surface_t)0xDEADBEEF; 595 } else { 596 mLists[i]->dpy = EGL_NO_DISPLAY; 597 mLists[i]->sur = EGL_NO_SURFACE; 598 } 599 } 600 } 601 602 int err = mHwc->prepare(mHwc, mNumDisplays, mLists); 603 ALOGE_IF(err, "HWComposer: prepare failed (%s)", strerror(-err)); 604 605 if (err == NO_ERROR) { 606 // here we're just making sure that "skip" layers are set 607 // to HWC_FRAMEBUFFER and we're also counting how many layers 608 // we have of each type. 609 for (size_t i=0 ; i<mNumDisplays ; i++) { 610 DisplayData& disp(mDisplayData[i]); 611 disp.hasFbComp = false; 612 disp.hasOvComp = false; 613 if (disp.list) { 614 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 615 hwc_layer_1_t& l = disp.list->hwLayers[i]; 616 617 //ALOGD("prepare: %d, type=%d, handle=%p", 618 // i, l.compositionType, l.handle); 619 620 if (l.flags & HWC_SKIP_LAYER) { 621 l.compositionType = HWC_FRAMEBUFFER; 622 } 623 if (l.compositionType == HWC_FRAMEBUFFER) { 624 disp.hasFbComp = true; 625 } 626 if (l.compositionType == HWC_OVERLAY) { 627 disp.hasOvComp = true; 628 } 629 } 630 } 631 } 632 } 633 return (status_t)err; 634 } 635 636 bool HWComposer::hasHwcComposition(int32_t id) const { 637 if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 638 return false; 639 return mDisplayData[id].hasOvComp; 640 } 641 642 bool HWComposer::hasGlesComposition(int32_t id) const { 643 if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 644 return true; 645 return mDisplayData[id].hasFbComp; 646 } 647 648 sp<Fence> HWComposer::getAndResetReleaseFence(int32_t id) { 649 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 650 return Fence::NO_FENCE; 651 652 int fd = INVALID_OPERATION; 653 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 654 const DisplayData& disp(mDisplayData[id]); 655 if (disp.framebufferTarget) { 656 fd = disp.framebufferTarget->releaseFenceFd; 657 disp.framebufferTarget->acquireFenceFd = -1; 658 disp.framebufferTarget->releaseFenceFd = -1; 659 } 660 } 661 return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE; 662 } 663 664 status_t HWComposer::commit() { 665 int err = NO_ERROR; 666 if (mHwc) { 667 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 668 // On version 1.0, the OpenGL ES target surface is communicated 669 // by the (dpy, sur) fields and we are guaranteed to have only 670 // a single display. 671 mLists[0]->dpy = eglGetCurrentDisplay(); 672 mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW); 673 } 674 675 for (size_t i=VIRTUAL_DISPLAY_ID_BASE; i<mNumDisplays; i++) { 676 DisplayData& disp(mDisplayData[i]); 677 if (disp.outbufHandle) { 678 mLists[i]->outbuf = disp.outbufHandle; 679 mLists[i]->outbufAcquireFenceFd = 680 disp.outbufAcquireFence->dup(); 681 } 682 } 683 684 err = mHwc->set(mHwc, mNumDisplays, mLists); 685 686 for (size_t i=0 ; i<mNumDisplays ; i++) { 687 DisplayData& disp(mDisplayData[i]); 688 disp.lastDisplayFence = disp.lastRetireFence; 689 disp.lastRetireFence = Fence::NO_FENCE; 690 if (disp.list) { 691 if (disp.list->retireFenceFd != -1) { 692 disp.lastRetireFence = new Fence(disp.list->retireFenceFd); 693 disp.list->retireFenceFd = -1; 694 } 695 disp.list->flags &= ~HWC_GEOMETRY_CHANGED; 696 } 697 } 698 } 699 return (status_t)err; 700 } 701 702 status_t HWComposer::release(int disp) { 703 LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE); 704 if (mHwc) { 705 eventControl(disp, HWC_EVENT_VSYNC, 0); 706 return (status_t)mHwc->blank(mHwc, disp, 1); 707 } 708 return NO_ERROR; 709 } 710 711 status_t HWComposer::acquire(int disp) { 712 LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE); 713 if (mHwc) { 714 return (status_t)mHwc->blank(mHwc, disp, 0); 715 } 716 return NO_ERROR; 717 } 718 719 void HWComposer::disconnectDisplay(int disp) { 720 LOG_ALWAYS_FATAL_IF(disp < 0 || disp == HWC_DISPLAY_PRIMARY); 721 DisplayData& dd(mDisplayData[disp]); 722 free(dd.list); 723 dd.list = NULL; 724 dd.framebufferTarget = NULL; // points into dd.list 725 dd.fbTargetHandle = NULL; 726 dd.outbufHandle = NULL; 727 dd.lastRetireFence = Fence::NO_FENCE; 728 dd.lastDisplayFence = Fence::NO_FENCE; 729 dd.outbufAcquireFence = Fence::NO_FENCE; 730 } 731 732 int HWComposer::getVisualID() const { 733 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 734 // FIXME: temporary hack until HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED 735 // is supported by the implementation. we can only be in this case 736 // if we have HWC 1.1 737 return HAL_PIXEL_FORMAT_RGBA_8888; 738 //return HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED; 739 } else { 740 return mFbDev->format; 741 } 742 } 743 744 bool HWComposer::supportsFramebufferTarget() const { 745 return (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)); 746 } 747 748 int HWComposer::fbPost(int32_t id, 749 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buffer) { 750 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 751 return setFramebufferTarget(id, acquireFence, buffer); 752 } else { 753 acquireFence->waitForever("HWComposer::fbPost"); 754 return mFbDev->post(mFbDev, buffer->handle); 755 } 756 } 757 758 int HWComposer::fbCompositionComplete() { 759 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) 760 return NO_ERROR; 761 762 if (mFbDev->compositionComplete) { 763 return mFbDev->compositionComplete(mFbDev); 764 } else { 765 return INVALID_OPERATION; 766 } 767 } 768 769 void HWComposer::fbDump(String8& result) { 770 if (mFbDev && mFbDev->common.version >= 1 && mFbDev->dump) { 771 const size_t SIZE = 4096; 772 char buffer[SIZE]; 773 mFbDev->dump(mFbDev, buffer, SIZE); 774 result.append(buffer); 775 } 776 } 777 778 status_t HWComposer::setOutputBuffer(int32_t id, const sp<Fence>& acquireFence, 779 const sp<GraphicBuffer>& buf) { 780 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 781 return BAD_INDEX; 782 if (id < VIRTUAL_DISPLAY_ID_BASE) 783 return INVALID_OPERATION; 784 785 DisplayData& disp(mDisplayData[id]); 786 disp.outbufHandle = buf->handle; 787 disp.outbufAcquireFence = acquireFence; 788 return NO_ERROR; 789 } 790 791 sp<Fence> HWComposer::getLastRetireFence(int32_t id) { 792 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) 793 return Fence::NO_FENCE; 794 return mDisplayData[id].lastRetireFence; 795 } 796 797 /* 798 * Helper template to implement a concrete HWCLayer 799 * This holds the pointer to the concrete hwc layer type 800 * and implements the "iterable" side of HWCLayer. 801 */ 802 template<typename CONCRETE, typename HWCTYPE> 803 class Iterable : public HWComposer::HWCLayer { 804 protected: 805 HWCTYPE* const mLayerList; 806 HWCTYPE* mCurrentLayer; 807 Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer) { } 808 inline HWCTYPE const * getLayer() const { return mCurrentLayer; } 809 inline HWCTYPE* getLayer() { return mCurrentLayer; } 810 virtual ~Iterable() { } 811 private: 812 // returns a copy of ourselves 813 virtual HWComposer::HWCLayer* dup() { 814 return new CONCRETE( static_cast<const CONCRETE&>(*this) ); 815 } 816 virtual status_t setLayer(size_t index) { 817 mCurrentLayer = &mLayerList[index]; 818 return NO_ERROR; 819 } 820 }; 821 822 /* 823 * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0. 824 * This implements the HWCLayer side of HWCIterableLayer. 825 */ 826 class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> { 827 struct hwc_composer_device_1* mHwc; 828 public: 829 HWCLayerVersion1(struct hwc_composer_device_1* hwc, hwc_layer_1_t* layer) 830 : Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer), mHwc(hwc) { } 831 832 virtual int32_t getCompositionType() const { 833 return getLayer()->compositionType; 834 } 835 virtual uint32_t getHints() const { 836 return getLayer()->hints; 837 } 838 virtual sp<Fence> getAndResetReleaseFence() { 839 int fd = getLayer()->releaseFenceFd; 840 getLayer()->releaseFenceFd = -1; 841 return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE; 842 } 843 virtual void setAcquireFenceFd(int fenceFd) { 844 getLayer()->acquireFenceFd = fenceFd; 845 } 846 virtual void setPerFrameDefaultState() { 847 //getLayer()->compositionType = HWC_FRAMEBUFFER; 848 } 849 virtual void setPlaneAlpha(uint8_t alpha) { 850 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) { 851 getLayer()->planeAlpha = alpha; 852 } else { 853 if (alpha < 0xFF) { 854 getLayer()->flags |= HWC_SKIP_LAYER; 855 } 856 } 857 } 858 virtual void setDefaultState() { 859 hwc_layer_1_t* const l = getLayer(); 860 l->compositionType = HWC_FRAMEBUFFER; 861 l->hints = 0; 862 l->flags = HWC_SKIP_LAYER; 863 l->handle = 0; 864 l->transform = 0; 865 l->blending = HWC_BLENDING_NONE; 866 l->visibleRegionScreen.numRects = 0; 867 l->visibleRegionScreen.rects = NULL; 868 l->acquireFenceFd = -1; 869 l->releaseFenceFd = -1; 870 l->planeAlpha = 0xFF; 871 } 872 virtual void setSkip(bool skip) { 873 if (skip) { 874 getLayer()->flags |= HWC_SKIP_LAYER; 875 } else { 876 getLayer()->flags &= ~HWC_SKIP_LAYER; 877 } 878 } 879 virtual void setBlending(uint32_t blending) { 880 getLayer()->blending = blending; 881 } 882 virtual void setTransform(uint32_t transform) { 883 getLayer()->transform = transform; 884 } 885 virtual void setFrame(const Rect& frame) { 886 reinterpret_cast<Rect&>(getLayer()->displayFrame) = frame; 887 } 888 virtual void setCrop(const Rect& crop) { 889 reinterpret_cast<Rect&>(getLayer()->sourceCrop) = crop; 890 } 891 virtual void setVisibleRegionScreen(const Region& reg) { 892 // Region::getSharedBuffer creates a reference to the underlying 893 // SharedBuffer of this Region, this reference is freed 894 // in onDisplayed() 895 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 896 SharedBuffer const* sb = reg.getSharedBuffer(&visibleRegion.numRects); 897 visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(sb->data()); 898 } 899 virtual void setBuffer(const sp<GraphicBuffer>& buffer) { 900 if (buffer == 0 || buffer->handle == 0) { 901 getLayer()->compositionType = HWC_FRAMEBUFFER; 902 getLayer()->flags |= HWC_SKIP_LAYER; 903 getLayer()->handle = 0; 904 } else { 905 getLayer()->handle = buffer->handle; 906 } 907 } 908 virtual void onDisplayed() { 909 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen; 910 SharedBuffer const* sb = SharedBuffer::bufferFromData(visibleRegion.rects); 911 if (sb) { 912 sb->release(); 913 // not technically needed but safer 914 visibleRegion.numRects = 0; 915 visibleRegion.rects = NULL; 916 } 917 918 getLayer()->acquireFenceFd = -1; 919 } 920 }; 921 922 /* 923 * returns an iterator initialized at a given index in the layer list 924 */ 925 HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) { 926 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) { 927 return LayerListIterator(); 928 } 929 const DisplayData& disp(mDisplayData[id]); 930 if (!mHwc || !disp.list || index > disp.list->numHwLayers) { 931 return LayerListIterator(); 932 } 933 return LayerListIterator(new HWCLayerVersion1(mHwc, disp.list->hwLayers), index); 934 } 935 936 /* 937 * returns an iterator on the beginning of the layer list 938 */ 939 HWComposer::LayerListIterator HWComposer::begin(int32_t id) { 940 return getLayerIterator(id, 0); 941 } 942 943 /* 944 * returns an iterator on the end of the layer list 945 */ 946 HWComposer::LayerListIterator HWComposer::end(int32_t id) { 947 size_t numLayers = 0; 948 if (uint32_t(id) <= 31 && mAllocatedDisplayIDs.hasBit(id)) { 949 const DisplayData& disp(mDisplayData[id]); 950 if (mHwc && disp.list) { 951 numLayers = disp.list->numHwLayers; 952 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) { 953 // with HWC 1.1, the last layer is always the HWC_FRAMEBUFFER_TARGET, 954 // which we ignore when iterating through the layer list. 955 ALOGE_IF(!numLayers, "mDisplayData[%d].list->numHwLayers is 0", id); 956 if (numLayers) { 957 numLayers--; 958 } 959 } 960 } 961 } 962 return getLayerIterator(id, numLayers); 963 } 964 965 void HWComposer::dump(String8& result, char* buffer, size_t SIZE) const { 966 if (mHwc) { 967 result.appendFormat("Hardware Composer state (version %8x):\n", hwcApiVersion(mHwc)); 968 result.appendFormat(" mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync); 969 for (size_t i=0 ; i<mNumDisplays ; i++) { 970 const DisplayData& disp(mDisplayData[i]); 971 if (!disp.connected) 972 continue; 973 974 const Vector< sp<Layer> >& visibleLayersSortedByZ = 975 mFlinger->getLayerSortedByZForHwcDisplay(i); 976 977 result.appendFormat( 978 " Display[%d] : %ux%u, xdpi=%f, ydpi=%f, refresh=%lld\n", 979 i, disp.width, disp.height, disp.xdpi, disp.ydpi, disp.refresh); 980 981 if (disp.list) { 982 result.appendFormat( 983 " numHwLayers=%u, flags=%08x\n", 984 disp.list->numHwLayers, disp.list->flags); 985 986 result.append( 987 " type | handle | hints | flags | tr | blend | format | source crop | frame name \n" 988 "------------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n"); 989 // " __________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____] 990 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) { 991 const hwc_layer_1_t&l = disp.list->hwLayers[i]; 992 int32_t format = -1; 993 String8 name("unknown"); 994 995 if (i < visibleLayersSortedByZ.size()) { 996 const sp<Layer>& layer(visibleLayersSortedByZ[i]); 997 const sp<GraphicBuffer>& buffer( 998 layer->getActiveBuffer()); 999 if (buffer != NULL) { 1000 format = buffer->getPixelFormat(); 1001 } 1002 name = layer->getName(); 1003 } 1004 1005 int type = l.compositionType; 1006 if (type == HWC_FRAMEBUFFER_TARGET) { 1007 name = "HWC_FRAMEBUFFER_TARGET"; 1008 format = disp.format; 1009 } 1010 1011 static char const* compositionTypeName[] = { 1012 "GLES", 1013 "HWC", 1014 "BACKGROUND", 1015 "FB TARGET", 1016 "UNKNOWN"}; 1017 if (type >= NELEM(compositionTypeName)) 1018 type = NELEM(compositionTypeName) - 1; 1019 1020 result.appendFormat( 1021 " %10s | %08x | %08x | %08x | %02x | %05x | %08x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d] %s\n", 1022 compositionTypeName[type], 1023 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format, 1024 l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom, 1025 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, 1026 name.string()); 1027 } 1028 } 1029 } 1030 } 1031 1032 if (mHwc && mHwc->dump) { 1033 mHwc->dump(mHwc, buffer, SIZE); 1034 result.append(buffer); 1035 } 1036 } 1037 1038 // --------------------------------------------------------------------------- 1039 1040 HWComposer::VSyncThread::VSyncThread(HWComposer& hwc) 1041 : mHwc(hwc), mEnabled(false), 1042 mNextFakeVSync(0), 1043 mRefreshPeriod(hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY)) 1044 { 1045 } 1046 1047 void HWComposer::VSyncThread::setEnabled(bool enabled) { 1048 Mutex::Autolock _l(mLock); 1049 if (mEnabled != enabled) { 1050 mEnabled = enabled; 1051 mCondition.signal(); 1052 } 1053 } 1054 1055 void HWComposer::VSyncThread::onFirstRef() { 1056 run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE); 1057 } 1058 1059 bool HWComposer::VSyncThread::threadLoop() { 1060 { // scope for lock 1061 Mutex::Autolock _l(mLock); 1062 while (!mEnabled) { 1063 mCondition.wait(mLock); 1064 } 1065 } 1066 1067 const nsecs_t period = mRefreshPeriod; 1068 const nsecs_t now = systemTime(CLOCK_MONOTONIC); 1069 nsecs_t next_vsync = mNextFakeVSync; 1070 nsecs_t sleep = next_vsync - now; 1071 if (sleep < 0) { 1072 // we missed, find where the next vsync should be 1073 sleep = (period - ((now - next_vsync) % period)); 1074 next_vsync = now + sleep; 1075 } 1076 mNextFakeVSync = next_vsync + period; 1077 1078 struct timespec spec; 1079 spec.tv_sec = next_vsync / 1000000000; 1080 spec.tv_nsec = next_vsync % 1000000000; 1081 1082 int err; 1083 do { 1084 err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL); 1085 } while (err<0 && errno == EINTR); 1086 1087 if (err == 0) { 1088 mHwc.mEventHandler.onVSyncReceived(0, next_vsync); 1089 } 1090 1091 return true; 1092 } 1093 1094 HWComposer::DisplayData::DisplayData() 1095 : width(0), height(0), format(0), 1096 xdpi(0.0f), ydpi(0.0f), 1097 refresh(0), 1098 connected(false), 1099 hasFbComp(false), hasOvComp(false), 1100 capacity(0), list(NULL), 1101 framebufferTarget(NULL), fbTargetHandle(0), 1102 lastRetireFence(Fence::NO_FENCE), lastDisplayFence(Fence::NO_FENCE), 1103 outbufHandle(NULL), outbufAcquireFence(Fence::NO_FENCE), 1104 events(0) 1105 {} 1106 1107 HWComposer::DisplayData::~DisplayData() { 1108 free(list); 1109 } 1110 1111 // --------------------------------------------------------------------------- 1112 }; // namespace android 1113
