VirtualDisplaySurface.cpp revision fa455354557f6283ff3a7d76979e52fd251c155f
1/* 2 * Copyright 2013 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 LOG_NDEBUG 0 18#include "VirtualDisplaySurface.h" 19#include "HWComposer.h" 20 21#include <gui/BufferItem.h> 22 23// --------------------------------------------------------------------------- 24namespace android { 25// --------------------------------------------------------------------------- 26 27#if defined(FORCE_HWC_COPY_FOR_VIRTUAL_DISPLAYS) 28static const bool sForceHwcCopy = true; 29#else 30static const bool sForceHwcCopy = false; 31#endif 32 33#define VDS_LOGE(msg, ...) ALOGE("[%s] " msg, \ 34 mDisplayName.string(), ##__VA_ARGS__) 35#define VDS_LOGW_IF(cond, msg, ...) ALOGW_IF(cond, "[%s] " msg, \ 36 mDisplayName.string(), ##__VA_ARGS__) 37#define VDS_LOGV(msg, ...) ALOGV("[%s] " msg, \ 38 mDisplayName.string(), ##__VA_ARGS__) 39 40static const char* dbgCompositionTypeStr(DisplaySurface::CompositionType type) { 41 switch (type) { 42 case DisplaySurface::COMPOSITION_UNKNOWN: return "UNKNOWN"; 43 case DisplaySurface::COMPOSITION_GLES: return "GLES"; 44 case DisplaySurface::COMPOSITION_HWC: return "HWC"; 45 case DisplaySurface::COMPOSITION_MIXED: return "MIXED"; 46 default: return "<INVALID>"; 47 } 48} 49 50VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int32_t dispId, 51 const sp<IGraphicBufferProducer>& sink, 52 const sp<IGraphicBufferProducer>& bqProducer, 53 const sp<IGraphicBufferConsumer>& bqConsumer, 54 const String8& name) 55: ConsumerBase(bqConsumer), 56 mHwc(hwc), 57 mDisplayId(dispId), 58 mDisplayName(name), 59 mOutputUsage(GRALLOC_USAGE_HW_COMPOSER), 60 mProducerSlotSource(0), 61 mDbgState(DBG_STATE_IDLE), 62 mDbgLastCompositionType(COMPOSITION_UNKNOWN), 63 mMustRecompose(false) 64{ 65 mSource[SOURCE_SINK] = sink; 66 mSource[SOURCE_SCRATCH] = bqProducer; 67 68 resetPerFrameState(); 69 70 int sinkWidth, sinkHeight; 71 sink->query(NATIVE_WINDOW_WIDTH, &sinkWidth); 72 sink->query(NATIVE_WINDOW_HEIGHT, &sinkHeight); 73 mSinkBufferWidth = sinkWidth; 74 mSinkBufferHeight = sinkHeight; 75 76 // Pick the buffer format to request from the sink when not rendering to it 77 // with GLES. If the consumer needs CPU access, use the default format 78 // set by the consumer. Otherwise allow gralloc to decide the format based 79 // on usage bits. 80 int sinkUsage; 81 sink->query(NATIVE_WINDOW_CONSUMER_USAGE_BITS, &sinkUsage); 82 if (sinkUsage & (GRALLOC_USAGE_SW_READ_MASK | GRALLOC_USAGE_SW_WRITE_MASK)) { 83 int sinkFormat; 84 sink->query(NATIVE_WINDOW_FORMAT, &sinkFormat); 85 mDefaultOutputFormat = sinkFormat; 86 } else { 87 mDefaultOutputFormat = HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED; 88 } 89 mOutputFormat = mDefaultOutputFormat; 90 91 ConsumerBase::mName = String8::format("VDS: %s", mDisplayName.string()); 92 mConsumer->setConsumerName(ConsumerBase::mName); 93 mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_COMPOSER); 94 mConsumer->setDefaultBufferSize(sinkWidth, sinkHeight); 95 mConsumer->setDefaultMaxBufferCount(2); 96} 97 98VirtualDisplaySurface::~VirtualDisplaySurface() { 99} 100 101status_t VirtualDisplaySurface::beginFrame(bool mustRecompose) { 102 if (mDisplayId < 0) 103 return NO_ERROR; 104 105 mMustRecompose = mustRecompose; 106 107 VDS_LOGW_IF(mDbgState != DBG_STATE_IDLE, 108 "Unexpected beginFrame() in %s state", dbgStateStr()); 109 mDbgState = DBG_STATE_BEGUN; 110 111 return refreshOutputBuffer(); 112} 113 114status_t VirtualDisplaySurface::prepareFrame(CompositionType compositionType) { 115 if (mDisplayId < 0) 116 return NO_ERROR; 117 118 VDS_LOGW_IF(mDbgState != DBG_STATE_BEGUN, 119 "Unexpected prepareFrame() in %s state", dbgStateStr()); 120 mDbgState = DBG_STATE_PREPARED; 121 122 mCompositionType = compositionType; 123 if (sForceHwcCopy && mCompositionType == COMPOSITION_GLES) { 124 // Some hardware can do RGB->YUV conversion more efficiently in hardware 125 // controlled by HWC than in hardware controlled by the video encoder. 126 // Forcing GLES-composed frames to go through an extra copy by the HWC 127 // allows the format conversion to happen there, rather than passing RGB 128 // directly to the consumer. 129 // 130 // On the other hand, when the consumer prefers RGB or can consume RGB 131 // inexpensively, this forces an unnecessary copy. 132 mCompositionType = COMPOSITION_MIXED; 133 } 134 135 if (mCompositionType != mDbgLastCompositionType) { 136 VDS_LOGV("prepareFrame: composition type changed to %s", 137 dbgCompositionTypeStr(mCompositionType)); 138 mDbgLastCompositionType = mCompositionType; 139 } 140 141 if (mCompositionType != COMPOSITION_GLES && 142 (mOutputFormat != mDefaultOutputFormat || 143 mOutputUsage != GRALLOC_USAGE_HW_COMPOSER)) { 144 // We must have just switched from GLES-only to MIXED or HWC 145 // composition. Stop using the format and usage requested by the GLES 146 // driver; they may be suboptimal when HWC is writing to the output 147 // buffer. For example, if the output is going to a video encoder, and 148 // HWC can write directly to YUV, some hardware can skip a 149 // memory-to-memory RGB-to-YUV conversion step. 150 // 151 // If we just switched *to* GLES-only mode, we'll change the 152 // format/usage and get a new buffer when the GLES driver calls 153 // dequeueBuffer(). 154 mOutputFormat = mDefaultOutputFormat; 155 mOutputUsage = GRALLOC_USAGE_HW_COMPOSER; 156 refreshOutputBuffer(); 157 } 158 159 return NO_ERROR; 160} 161 162status_t VirtualDisplaySurface::compositionComplete() { 163 return NO_ERROR; 164} 165 166status_t VirtualDisplaySurface::advanceFrame() { 167 if (mDisplayId < 0) 168 return NO_ERROR; 169 170 if (mCompositionType == COMPOSITION_HWC) { 171 VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED, 172 "Unexpected advanceFrame() in %s state on HWC frame", 173 dbgStateStr()); 174 } else { 175 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES_DONE, 176 "Unexpected advanceFrame() in %s state on GLES/MIXED frame", 177 dbgStateStr()); 178 } 179 mDbgState = DBG_STATE_HWC; 180 181 if (mOutputProducerSlot < 0 || 182 (mCompositionType != COMPOSITION_HWC && mFbProducerSlot < 0)) { 183 // Last chance bailout if something bad happened earlier. For example, 184 // in a GLES configuration, if the sink disappears then dequeueBuffer 185 // will fail, the GLES driver won't queue a buffer, but SurfaceFlinger 186 // will soldier on. So we end up here without a buffer. There should 187 // be lots of scary messages in the log just before this. 188 VDS_LOGE("advanceFrame: no buffer, bailing out"); 189 return NO_MEMORY; 190 } 191 192 sp<GraphicBuffer> fbBuffer = mFbProducerSlot >= 0 ? 193 mProducerBuffers[mFbProducerSlot] : sp<GraphicBuffer>(NULL); 194 sp<GraphicBuffer> outBuffer = mProducerBuffers[mOutputProducerSlot]; 195 VDS_LOGV("advanceFrame: fb=%d(%p) out=%d(%p)", 196 mFbProducerSlot, fbBuffer.get(), 197 mOutputProducerSlot, outBuffer.get()); 198 199 // At this point we know the output buffer acquire fence, 200 // so update HWC state with it. 201 mHwc.setOutputBuffer(mDisplayId, mOutputFence, outBuffer); 202 203 status_t result = NO_ERROR; 204 if (fbBuffer != NULL) { 205 result = mHwc.fbPost(mDisplayId, mFbFence, fbBuffer); 206 } 207 208 return result; 209} 210 211void VirtualDisplaySurface::onFrameCommitted() { 212 if (mDisplayId < 0) 213 return; 214 215 VDS_LOGW_IF(mDbgState != DBG_STATE_HWC, 216 "Unexpected onFrameCommitted() in %s state", dbgStateStr()); 217 mDbgState = DBG_STATE_IDLE; 218 219 sp<Fence> fbFence = mHwc.getAndResetReleaseFence(mDisplayId); 220 if (mCompositionType == COMPOSITION_MIXED && mFbProducerSlot >= 0) { 221 // release the scratch buffer back to the pool 222 Mutex::Autolock lock(mMutex); 223 int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, mFbProducerSlot); 224 VDS_LOGV("onFrameCommitted: release scratch sslot=%d", sslot); 225 addReleaseFenceLocked(sslot, mProducerBuffers[mFbProducerSlot], fbFence); 226 releaseBufferLocked(sslot, mProducerBuffers[mFbProducerSlot], 227 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR); 228 } 229 230 if (mOutputProducerSlot >= 0) { 231 int sslot = mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot); 232 QueueBufferOutput qbo; 233 sp<Fence> outFence = mHwc.getLastRetireFence(mDisplayId); 234 VDS_LOGV("onFrameCommitted: queue sink sslot=%d", sslot); 235 if (mMustRecompose) { 236 status_t result = mSource[SOURCE_SINK]->queueBuffer(sslot, 237 QueueBufferInput( 238 systemTime(), false /* isAutoTimestamp */, 239 HAL_DATASPACE_UNKNOWN, 240 Rect(mSinkBufferWidth, mSinkBufferHeight), 241 NATIVE_WINDOW_SCALING_MODE_FREEZE, 0 /* transform */, 242 true /* async*/, 243 outFence), 244 &qbo); 245 if (result == NO_ERROR) { 246 updateQueueBufferOutput(qbo); 247 } 248 } else { 249 // If the surface hadn't actually been updated, then we only went 250 // through the motions of updating the display to keep our state 251 // machine happy. We cancel the buffer to avoid triggering another 252 // re-composition and causing an infinite loop. 253 mSource[SOURCE_SINK]->cancelBuffer(sslot, outFence); 254 } 255 } 256 257 resetPerFrameState(); 258} 259 260void VirtualDisplaySurface::dumpAsString(String8& /* result */) const { 261} 262 263void VirtualDisplaySurface::resizeBuffers(const uint32_t w, const uint32_t h) { 264 uint32_t tmpW, tmpH, transformHint, numPendingBuffers; 265 mQueueBufferOutput.deflate(&tmpW, &tmpH, &transformHint, &numPendingBuffers); 266 mQueueBufferOutput.inflate(w, h, transformHint, numPendingBuffers); 267 268 mSinkBufferWidth = w; 269 mSinkBufferHeight = h; 270} 271 272status_t VirtualDisplaySurface::requestBuffer(int pslot, 273 sp<GraphicBuffer>* outBuf) { 274 if (mDisplayId < 0) 275 return mSource[SOURCE_SINK]->requestBuffer(pslot, outBuf); 276 277 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 278 "Unexpected requestBuffer pslot=%d in %s state", 279 pslot, dbgStateStr()); 280 281 *outBuf = mProducerBuffers[pslot]; 282 return NO_ERROR; 283} 284 285status_t VirtualDisplaySurface::setBufferCount(int bufferCount) { 286 return mSource[SOURCE_SINK]->setBufferCount(bufferCount); 287} 288 289status_t VirtualDisplaySurface::setMaxDequeuedBufferCount( 290 int maxDequeuedBuffers) { 291 return mSource[SOURCE_SINK]->setMaxDequeuedBufferCount(maxDequeuedBuffers); 292} 293 294status_t VirtualDisplaySurface::setAsyncMode(bool async) { 295 return mSource[SOURCE_SINK]->setAsyncMode(async); 296} 297 298status_t VirtualDisplaySurface::dequeueBuffer(Source source, 299 PixelFormat format, uint32_t usage, int* sslot, sp<Fence>* fence) { 300 LOG_FATAL_IF(mDisplayId < 0, "mDisplayId=%d but should not be < 0.", mDisplayId); 301 // Don't let a slow consumer block us 302 bool async = (source == SOURCE_SINK); 303 304 status_t result = mSource[source]->dequeueBuffer(sslot, fence, async, 305 mSinkBufferWidth, mSinkBufferHeight, format, usage); 306 if (result < 0) 307 return result; 308 int pslot = mapSource2ProducerSlot(source, *sslot); 309 VDS_LOGV("dequeueBuffer(%s): sslot=%d pslot=%d result=%d", 310 dbgSourceStr(source), *sslot, pslot, result); 311 uint64_t sourceBit = static_cast<uint64_t>(source) << pslot; 312 313 if ((mProducerSlotSource & (1ULL << pslot)) != sourceBit) { 314 // This slot was previously dequeued from the other source; must 315 // re-request the buffer. 316 result |= BUFFER_NEEDS_REALLOCATION; 317 mProducerSlotSource &= ~(1ULL << pslot); 318 mProducerSlotSource |= sourceBit; 319 } 320 321 if (result & RELEASE_ALL_BUFFERS) { 322 for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) { 323 if ((mProducerSlotSource & (1ULL << i)) == sourceBit) 324 mProducerBuffers[i].clear(); 325 } 326 } 327 if (result & BUFFER_NEEDS_REALLOCATION) { 328 result = mSource[source]->requestBuffer(*sslot, &mProducerBuffers[pslot]); 329 if (result < 0) { 330 mProducerBuffers[pslot].clear(); 331 mSource[source]->cancelBuffer(*sslot, *fence); 332 return result; 333 } 334 VDS_LOGV("dequeueBuffer(%s): buffers[%d]=%p fmt=%d usage=%#x", 335 dbgSourceStr(source), pslot, mProducerBuffers[pslot].get(), 336 mProducerBuffers[pslot]->getPixelFormat(), 337 mProducerBuffers[pslot]->getUsage()); 338 } 339 340 return result; 341} 342 343status_t VirtualDisplaySurface::dequeueBuffer(int* pslot, sp<Fence>* fence, bool async, 344 uint32_t w, uint32_t h, PixelFormat format, uint32_t usage) { 345 if (mDisplayId < 0) 346 return mSource[SOURCE_SINK]->dequeueBuffer(pslot, fence, async, w, h, format, usage); 347 348 VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED, 349 "Unexpected dequeueBuffer() in %s state", dbgStateStr()); 350 mDbgState = DBG_STATE_GLES; 351 352 VDS_LOGW_IF(!async, "EGL called dequeueBuffer with !async despite eglSwapInterval(0)"); 353 VDS_LOGV("dequeueBuffer %dx%d fmt=%d usage=%#x", w, h, format, usage); 354 355 status_t result = NO_ERROR; 356 Source source = fbSourceForCompositionType(mCompositionType); 357 358 if (source == SOURCE_SINK) { 359 360 if (mOutputProducerSlot < 0) { 361 // Last chance bailout if something bad happened earlier. For example, 362 // in a GLES configuration, if the sink disappears then dequeueBuffer 363 // will fail, the GLES driver won't queue a buffer, but SurfaceFlinger 364 // will soldier on. So we end up here without a buffer. There should 365 // be lots of scary messages in the log just before this. 366 VDS_LOGE("dequeueBuffer: no buffer, bailing out"); 367 return NO_MEMORY; 368 } 369 370 // We already dequeued the output buffer. If the GLES driver wants 371 // something incompatible, we have to cancel and get a new one. This 372 // will mean that HWC will see a different output buffer between 373 // prepare and set, but since we're in GLES-only mode already it 374 // shouldn't matter. 375 376 usage |= GRALLOC_USAGE_HW_COMPOSER; 377 const sp<GraphicBuffer>& buf = mProducerBuffers[mOutputProducerSlot]; 378 if ((usage & ~buf->getUsage()) != 0 || 379 (format != 0 && format != buf->getPixelFormat()) || 380 (w != 0 && w != mSinkBufferWidth) || 381 (h != 0 && h != mSinkBufferHeight)) { 382 VDS_LOGV("dequeueBuffer: dequeueing new output buffer: " 383 "want %dx%d fmt=%d use=%#x, " 384 "have %dx%d fmt=%d use=%#x", 385 w, h, format, usage, 386 mSinkBufferWidth, mSinkBufferHeight, 387 buf->getPixelFormat(), buf->getUsage()); 388 mOutputFormat = format; 389 mOutputUsage = usage; 390 result = refreshOutputBuffer(); 391 if (result < 0) 392 return result; 393 } 394 } 395 396 if (source == SOURCE_SINK) { 397 *pslot = mOutputProducerSlot; 398 *fence = mOutputFence; 399 } else { 400 int sslot; 401 result = dequeueBuffer(source, format, usage, &sslot, fence); 402 if (result >= 0) { 403 *pslot = mapSource2ProducerSlot(source, sslot); 404 } 405 } 406 return result; 407} 408 409status_t VirtualDisplaySurface::detachBuffer(int /* slot */) { 410 VDS_LOGE("detachBuffer is not available for VirtualDisplaySurface"); 411 return INVALID_OPERATION; 412} 413 414status_t VirtualDisplaySurface::detachNextBuffer( 415 sp<GraphicBuffer>* /* outBuffer */, sp<Fence>* /* outFence */) { 416 VDS_LOGE("detachNextBuffer is not available for VirtualDisplaySurface"); 417 return INVALID_OPERATION; 418} 419 420status_t VirtualDisplaySurface::attachBuffer(int* /* outSlot */, 421 const sp<GraphicBuffer>& /* buffer */) { 422 VDS_LOGE("attachBuffer is not available for VirtualDisplaySurface"); 423 return INVALID_OPERATION; 424} 425 426status_t VirtualDisplaySurface::queueBuffer(int pslot, 427 const QueueBufferInput& input, QueueBufferOutput* output) { 428 if (mDisplayId < 0) 429 return mSource[SOURCE_SINK]->queueBuffer(pslot, input, output); 430 431 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 432 "Unexpected queueBuffer(pslot=%d) in %s state", pslot, 433 dbgStateStr()); 434 mDbgState = DBG_STATE_GLES_DONE; 435 436 VDS_LOGV("queueBuffer pslot=%d", pslot); 437 438 status_t result; 439 if (mCompositionType == COMPOSITION_MIXED) { 440 // Queue the buffer back into the scratch pool 441 QueueBufferOutput scratchQBO; 442 int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, pslot); 443 result = mSource[SOURCE_SCRATCH]->queueBuffer(sslot, input, &scratchQBO); 444 if (result != NO_ERROR) 445 return result; 446 447 // Now acquire the buffer from the scratch pool -- should be the same 448 // slot and fence as we just queued. 449 Mutex::Autolock lock(mMutex); 450 BufferItem item; 451 result = acquireBufferLocked(&item, 0); 452 if (result != NO_ERROR) 453 return result; 454 VDS_LOGW_IF(item.mBuf != sslot, 455 "queueBuffer: acquired sslot %d from SCRATCH after queueing sslot %d", 456 item.mBuf, sslot); 457 mFbProducerSlot = mapSource2ProducerSlot(SOURCE_SCRATCH, item.mBuf); 458 mFbFence = mSlots[item.mBuf].mFence; 459 460 } else { 461 LOG_FATAL_IF(mCompositionType != COMPOSITION_GLES, 462 "Unexpected queueBuffer in state %s for compositionType %s", 463 dbgStateStr(), dbgCompositionTypeStr(mCompositionType)); 464 465 // Extract the GLES release fence for HWC to acquire 466 int64_t timestamp; 467 bool isAutoTimestamp; 468 android_dataspace dataSpace; 469 Rect crop; 470 int scalingMode; 471 uint32_t transform; 472 bool async; 473 input.deflate(×tamp, &isAutoTimestamp, &dataSpace, &crop, 474 &scalingMode, &transform, &async, &mFbFence); 475 476 mFbProducerSlot = pslot; 477 mOutputFence = mFbFence; 478 } 479 480 *output = mQueueBufferOutput; 481 return NO_ERROR; 482} 483 484void VirtualDisplaySurface::cancelBuffer(int pslot, const sp<Fence>& fence) { 485 if (mDisplayId < 0) 486 return mSource[SOURCE_SINK]->cancelBuffer(mapProducer2SourceSlot(SOURCE_SINK, pslot), fence); 487 488 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 489 "Unexpected cancelBuffer(pslot=%d) in %s state", pslot, 490 dbgStateStr()); 491 VDS_LOGV("cancelBuffer pslot=%d", pslot); 492 Source source = fbSourceForCompositionType(mCompositionType); 493 return mSource[source]->cancelBuffer( 494 mapProducer2SourceSlot(source, pslot), fence); 495} 496 497int VirtualDisplaySurface::query(int what, int* value) { 498 switch (what) { 499 case NATIVE_WINDOW_WIDTH: 500 *value = mSinkBufferWidth; 501 break; 502 case NATIVE_WINDOW_HEIGHT: 503 *value = mSinkBufferHeight; 504 break; 505 default: 506 return mSource[SOURCE_SINK]->query(what, value); 507 } 508 return NO_ERROR; 509} 510 511status_t VirtualDisplaySurface::connect(const sp<IProducerListener>& listener, 512 int api, bool producerControlledByApp, 513 QueueBufferOutput* output) { 514 QueueBufferOutput qbo; 515 status_t result = mSource[SOURCE_SINK]->connect(listener, api, 516 producerControlledByApp, &qbo); 517 if (result == NO_ERROR) { 518 updateQueueBufferOutput(qbo); 519 *output = mQueueBufferOutput; 520 } 521 return result; 522} 523 524status_t VirtualDisplaySurface::disconnect(int api) { 525 return mSource[SOURCE_SINK]->disconnect(api); 526} 527 528status_t VirtualDisplaySurface::setSidebandStream(const sp<NativeHandle>& /*stream*/) { 529 return INVALID_OPERATION; 530} 531 532void VirtualDisplaySurface::allocateBuffers(bool /* async */, 533 uint32_t /* width */, uint32_t /* height */, PixelFormat /* format */, 534 uint32_t /* usage */) { 535 // TODO: Should we actually allocate buffers for a virtual display? 536} 537 538status_t VirtualDisplaySurface::allowAllocation(bool /* allow */) { 539 return INVALID_OPERATION; 540} 541 542status_t VirtualDisplaySurface::setGenerationNumber(uint32_t /* generation */) { 543 ALOGE("setGenerationNumber not supported on VirtualDisplaySurface"); 544 return INVALID_OPERATION; 545} 546 547String8 VirtualDisplaySurface::getConsumerName() const { 548 return String8("VirtualDisplaySurface"); 549} 550 551void VirtualDisplaySurface::updateQueueBufferOutput( 552 const QueueBufferOutput& qbo) { 553 uint32_t w, h, transformHint, numPendingBuffers; 554 qbo.deflate(&w, &h, &transformHint, &numPendingBuffers); 555 mQueueBufferOutput.inflate(w, h, 0, numPendingBuffers); 556} 557 558void VirtualDisplaySurface::resetPerFrameState() { 559 mCompositionType = COMPOSITION_UNKNOWN; 560 mFbFence = Fence::NO_FENCE; 561 mOutputFence = Fence::NO_FENCE; 562 mOutputProducerSlot = -1; 563 mFbProducerSlot = -1; 564} 565 566status_t VirtualDisplaySurface::refreshOutputBuffer() { 567 if (mOutputProducerSlot >= 0) { 568 mSource[SOURCE_SINK]->cancelBuffer( 569 mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot), 570 mOutputFence); 571 } 572 573 int sslot; 574 status_t result = dequeueBuffer(SOURCE_SINK, mOutputFormat, mOutputUsage, 575 &sslot, &mOutputFence); 576 if (result < 0) 577 return result; 578 mOutputProducerSlot = mapSource2ProducerSlot(SOURCE_SINK, sslot); 579 580 // On GLES-only frames, we don't have the right output buffer acquire fence 581 // until after GLES calls queueBuffer(). So here we just set the buffer 582 // (for use in HWC prepare) but not the fence; we'll call this again with 583 // the proper fence once we have it. 584 result = mHwc.setOutputBuffer(mDisplayId, Fence::NO_FENCE, 585 mProducerBuffers[mOutputProducerSlot]); 586 587 return result; 588} 589 590// This slot mapping function is its own inverse, so two copies are unnecessary. 591// Both are kept to make the intent clear where the function is called, and for 592// the (unlikely) chance that we switch to a different mapping function. 593int VirtualDisplaySurface::mapSource2ProducerSlot(Source source, int sslot) { 594 if (source == SOURCE_SCRATCH) { 595 return BufferQueue::NUM_BUFFER_SLOTS - sslot - 1; 596 } else { 597 return sslot; 598 } 599} 600int VirtualDisplaySurface::mapProducer2SourceSlot(Source source, int pslot) { 601 return mapSource2ProducerSlot(source, pslot); 602} 603 604VirtualDisplaySurface::Source 605VirtualDisplaySurface::fbSourceForCompositionType(CompositionType type) { 606 return type == COMPOSITION_MIXED ? SOURCE_SCRATCH : SOURCE_SINK; 607} 608 609const char* VirtualDisplaySurface::dbgStateStr() const { 610 switch (mDbgState) { 611 case DBG_STATE_IDLE: return "IDLE"; 612 case DBG_STATE_PREPARED: return "PREPARED"; 613 case DBG_STATE_GLES: return "GLES"; 614 case DBG_STATE_GLES_DONE: return "GLES_DONE"; 615 case DBG_STATE_HWC: return "HWC"; 616 default: return "INVALID"; 617 } 618} 619 620const char* VirtualDisplaySurface::dbgSourceStr(Source s) { 621 switch (s) { 622 case SOURCE_SINK: return "SINK"; 623 case SOURCE_SCRATCH: return "SCRATCH"; 624 default: return "INVALID"; 625 } 626} 627 628// --------------------------------------------------------------------------- 629} // namespace android 630// --------------------------------------------------------------------------- 631