VirtualDisplaySurface.cpp revision f133d003aaac80a0932a2d8f9efd8493e56f7814
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#include <gui/IProducerListener.h> 23 24// --------------------------------------------------------------------------- 25namespace android { 26// --------------------------------------------------------------------------- 27 28#if defined(FORCE_HWC_COPY_FOR_VIRTUAL_DISPLAYS) 29static const bool sForceHwcCopy = true; 30#else 31static const bool sForceHwcCopy = false; 32#endif 33 34#define VDS_LOGE(msg, ...) ALOGE("[%s] " msg, \ 35 mDisplayName.string(), ##__VA_ARGS__) 36#define VDS_LOGW_IF(cond, msg, ...) ALOGW_IF(cond, "[%s] " msg, \ 37 mDisplayName.string(), ##__VA_ARGS__) 38#define VDS_LOGV(msg, ...) ALOGV("[%s] " msg, \ 39 mDisplayName.string(), ##__VA_ARGS__) 40 41static const char* dbgCompositionTypeStr(DisplaySurface::CompositionType type) { 42 switch (type) { 43 case DisplaySurface::COMPOSITION_UNKNOWN: return "UNKNOWN"; 44 case DisplaySurface::COMPOSITION_GLES: return "GLES"; 45 case DisplaySurface::COMPOSITION_HWC: return "HWC"; 46 case DisplaySurface::COMPOSITION_MIXED: return "MIXED"; 47 default: return "<INVALID>"; 48 } 49} 50 51VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int32_t dispId, 52 const sp<IGraphicBufferProducer>& sink, 53 const sp<IGraphicBufferProducer>& bqProducer, 54 const sp<IGraphicBufferConsumer>& bqConsumer, 55 const String8& name) 56: ConsumerBase(bqConsumer), 57 mHwc(hwc), 58 mDisplayId(dispId), 59 mDisplayName(name), 60 mOutputUsage(GRALLOC_USAGE_HW_COMPOSER), 61 mProducerSlotSource(0), 62 mDbgState(DBG_STATE_IDLE), 63 mDbgLastCompositionType(COMPOSITION_UNKNOWN), 64 mMustRecompose(false) 65{ 66 mSource[SOURCE_SINK] = sink; 67 mSource[SOURCE_SCRATCH] = bqProducer; 68 69 resetPerFrameState(); 70 71 int sinkWidth, sinkHeight; 72 sink->query(NATIVE_WINDOW_WIDTH, &sinkWidth); 73 sink->query(NATIVE_WINDOW_HEIGHT, &sinkHeight); 74 mSinkBufferWidth = sinkWidth; 75 mSinkBufferHeight = sinkHeight; 76 77 // Pick the buffer format to request from the sink when not rendering to it 78 // with GLES. If the consumer needs CPU access, use the default format 79 // set by the consumer. Otherwise allow gralloc to decide the format based 80 // on usage bits. 81 int sinkUsage; 82 sink->query(NATIVE_WINDOW_CONSUMER_USAGE_BITS, &sinkUsage); 83 if (sinkUsage & (GRALLOC_USAGE_SW_READ_MASK | GRALLOC_USAGE_SW_WRITE_MASK)) { 84 int sinkFormat; 85 sink->query(NATIVE_WINDOW_FORMAT, &sinkFormat); 86 mDefaultOutputFormat = sinkFormat; 87 } else { 88 mDefaultOutputFormat = HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED; 89 } 90 mOutputFormat = mDefaultOutputFormat; 91 92 ConsumerBase::mName = String8::format("VDS: %s", mDisplayName.string()); 93 mConsumer->setConsumerName(ConsumerBase::mName); 94 mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_COMPOSER); 95 mConsumer->setDefaultBufferSize(sinkWidth, sinkHeight); 96 sink->setAsyncMode(true); 97 IGraphicBufferProducer::QueueBufferOutput output; 98 mSource[SOURCE_SCRATCH]->connect(NULL, NATIVE_WINDOW_API_EGL, false, &output); 99} 100 101VirtualDisplaySurface::~VirtualDisplaySurface() { 102 mSource[SOURCE_SCRATCH]->disconnect(NATIVE_WINDOW_API_EGL); 103} 104 105status_t VirtualDisplaySurface::beginFrame(bool mustRecompose) { 106 if (mDisplayId < 0) 107 return NO_ERROR; 108 109 mMustRecompose = mustRecompose; 110 111 VDS_LOGW_IF(mDbgState != DBG_STATE_IDLE, 112 "Unexpected beginFrame() in %s state", dbgStateStr()); 113 mDbgState = DBG_STATE_BEGUN; 114 115 return refreshOutputBuffer(); 116} 117 118status_t VirtualDisplaySurface::prepareFrame(CompositionType compositionType) { 119 if (mDisplayId < 0) 120 return NO_ERROR; 121 122 VDS_LOGW_IF(mDbgState != DBG_STATE_BEGUN, 123 "Unexpected prepareFrame() in %s state", dbgStateStr()); 124 mDbgState = DBG_STATE_PREPARED; 125 126 mCompositionType = compositionType; 127 if (sForceHwcCopy && mCompositionType == COMPOSITION_GLES) { 128 // Some hardware can do RGB->YUV conversion more efficiently in hardware 129 // controlled by HWC than in hardware controlled by the video encoder. 130 // Forcing GLES-composed frames to go through an extra copy by the HWC 131 // allows the format conversion to happen there, rather than passing RGB 132 // directly to the consumer. 133 // 134 // On the other hand, when the consumer prefers RGB or can consume RGB 135 // inexpensively, this forces an unnecessary copy. 136 mCompositionType = COMPOSITION_MIXED; 137 } 138 139 if (mCompositionType != mDbgLastCompositionType) { 140 VDS_LOGV("prepareFrame: composition type changed to %s", 141 dbgCompositionTypeStr(mCompositionType)); 142 mDbgLastCompositionType = mCompositionType; 143 } 144 145 if (mCompositionType != COMPOSITION_GLES && 146 (mOutputFormat != mDefaultOutputFormat || 147 mOutputUsage != GRALLOC_USAGE_HW_COMPOSER)) { 148 // We must have just switched from GLES-only to MIXED or HWC 149 // composition. Stop using the format and usage requested by the GLES 150 // driver; they may be suboptimal when HWC is writing to the output 151 // buffer. For example, if the output is going to a video encoder, and 152 // HWC can write directly to YUV, some hardware can skip a 153 // memory-to-memory RGB-to-YUV conversion step. 154 // 155 // If we just switched *to* GLES-only mode, we'll change the 156 // format/usage and get a new buffer when the GLES driver calls 157 // dequeueBuffer(). 158 mOutputFormat = mDefaultOutputFormat; 159 mOutputUsage = GRALLOC_USAGE_HW_COMPOSER; 160 refreshOutputBuffer(); 161 } 162 163 return NO_ERROR; 164} 165 166status_t VirtualDisplaySurface::compositionComplete() { 167 return NO_ERROR; 168} 169 170status_t VirtualDisplaySurface::advanceFrame() { 171 if (mDisplayId < 0) 172 return NO_ERROR; 173 174 if (mCompositionType == COMPOSITION_HWC) { 175 VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED, 176 "Unexpected advanceFrame() in %s state on HWC frame", 177 dbgStateStr()); 178 } else { 179 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES_DONE, 180 "Unexpected advanceFrame() in %s state on GLES/MIXED frame", 181 dbgStateStr()); 182 } 183 mDbgState = DBG_STATE_HWC; 184 185 if (mOutputProducerSlot < 0 || 186 (mCompositionType != COMPOSITION_HWC && mFbProducerSlot < 0)) { 187 // Last chance bailout if something bad happened earlier. For example, 188 // in a GLES configuration, if the sink disappears then dequeueBuffer 189 // will fail, the GLES driver won't queue a buffer, but SurfaceFlinger 190 // will soldier on. So we end up here without a buffer. There should 191 // be lots of scary messages in the log just before this. 192 VDS_LOGE("advanceFrame: no buffer, bailing out"); 193 return NO_MEMORY; 194 } 195 196 sp<GraphicBuffer> fbBuffer = mFbProducerSlot >= 0 ? 197 mProducerBuffers[mFbProducerSlot] : sp<GraphicBuffer>(NULL); 198 sp<GraphicBuffer> outBuffer = mProducerBuffers[mOutputProducerSlot]; 199 VDS_LOGV("advanceFrame: fb=%d(%p) out=%d(%p)", 200 mFbProducerSlot, fbBuffer.get(), 201 mOutputProducerSlot, outBuffer.get()); 202 203 // At this point we know the output buffer acquire fence, 204 // so update HWC state with it. 205 mHwc.setOutputBuffer(mDisplayId, mOutputFence, outBuffer); 206 207 status_t result = NO_ERROR; 208 if (fbBuffer != NULL) { 209 result = mHwc.fbPost(mDisplayId, mFbFence, fbBuffer); 210 } 211 212 return result; 213} 214 215void VirtualDisplaySurface::onFrameCommitted() { 216 if (mDisplayId < 0) 217 return; 218 219 VDS_LOGW_IF(mDbgState != DBG_STATE_HWC, 220 "Unexpected onFrameCommitted() in %s state", dbgStateStr()); 221 mDbgState = DBG_STATE_IDLE; 222 223 sp<Fence> fbFence = mHwc.getAndResetReleaseFence(mDisplayId); 224 if (mCompositionType == COMPOSITION_MIXED && mFbProducerSlot >= 0) { 225 // release the scratch buffer back to the pool 226 Mutex::Autolock lock(mMutex); 227 int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, mFbProducerSlot); 228 VDS_LOGV("onFrameCommitted: release scratch sslot=%d", sslot); 229 addReleaseFenceLocked(sslot, mProducerBuffers[mFbProducerSlot], fbFence); 230 releaseBufferLocked(sslot, mProducerBuffers[mFbProducerSlot], 231 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR); 232 } 233 234 if (mOutputProducerSlot >= 0) { 235 int sslot = mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot); 236 QueueBufferOutput qbo; 237 sp<Fence> outFence = mHwc.getLastRetireFence(mDisplayId); 238 VDS_LOGV("onFrameCommitted: queue sink sslot=%d", sslot); 239 if (mMustRecompose) { 240 status_t result = mSource[SOURCE_SINK]->queueBuffer(sslot, 241 QueueBufferInput( 242 systemTime(), false /* isAutoTimestamp */, 243 HAL_DATASPACE_UNKNOWN, 244 Rect(mSinkBufferWidth, mSinkBufferHeight), 245 NATIVE_WINDOW_SCALING_MODE_FREEZE, 0 /* transform */, 246 outFence), 247 &qbo); 248 if (result == NO_ERROR) { 249 updateQueueBufferOutput(qbo); 250 } 251 } else { 252 // If the surface hadn't actually been updated, then we only went 253 // through the motions of updating the display to keep our state 254 // machine happy. We cancel the buffer to avoid triggering another 255 // re-composition and causing an infinite loop. 256 mSource[SOURCE_SINK]->cancelBuffer(sslot, outFence); 257 } 258 } 259 260 resetPerFrameState(); 261} 262 263void VirtualDisplaySurface::dumpAsString(String8& /* result */) const { 264} 265 266void VirtualDisplaySurface::resizeBuffers(const uint32_t w, const uint32_t h) { 267 uint32_t tmpW, tmpH, transformHint, numPendingBuffers; 268 mQueueBufferOutput.deflate(&tmpW, &tmpH, &transformHint, &numPendingBuffers); 269 mQueueBufferOutput.inflate(w, h, transformHint, numPendingBuffers); 270 271 mSinkBufferWidth = w; 272 mSinkBufferHeight = h; 273} 274 275status_t VirtualDisplaySurface::requestBuffer(int pslot, 276 sp<GraphicBuffer>* outBuf) { 277 if (mDisplayId < 0) 278 return mSource[SOURCE_SINK]->requestBuffer(pslot, outBuf); 279 280 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 281 "Unexpected requestBuffer pslot=%d in %s state", 282 pslot, dbgStateStr()); 283 284 *outBuf = mProducerBuffers[pslot]; 285 return NO_ERROR; 286} 287 288status_t VirtualDisplaySurface::setMaxDequeuedBufferCount( 289 int maxDequeuedBuffers) { 290 return mSource[SOURCE_SINK]->setMaxDequeuedBufferCount(maxDequeuedBuffers); 291} 292 293status_t VirtualDisplaySurface::setAsyncMode(bool async) { 294 return mSource[SOURCE_SINK]->setAsyncMode(async); 295} 296 297status_t VirtualDisplaySurface::dequeueBuffer(Source source, 298 PixelFormat format, uint32_t usage, int* sslot, sp<Fence>* fence) { 299 LOG_FATAL_IF(mDisplayId < 0, "mDisplayId=%d but should not be < 0.", mDisplayId); 300 301 status_t result = mSource[source]->dequeueBuffer(sslot, fence, 302 mSinkBufferWidth, mSinkBufferHeight, format, usage); 303 if (result < 0) 304 return result; 305 int pslot = mapSource2ProducerSlot(source, *sslot); 306 VDS_LOGV("dequeueBuffer(%s): sslot=%d pslot=%d result=%d", 307 dbgSourceStr(source), *sslot, pslot, result); 308 uint64_t sourceBit = static_cast<uint64_t>(source) << pslot; 309 310 if ((mProducerSlotSource & (1ULL << pslot)) != sourceBit) { 311 // This slot was previously dequeued from the other source; must 312 // re-request the buffer. 313 result |= BUFFER_NEEDS_REALLOCATION; 314 mProducerSlotSource &= ~(1ULL << pslot); 315 mProducerSlotSource |= sourceBit; 316 } 317 318 if (result & RELEASE_ALL_BUFFERS) { 319 for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) { 320 if ((mProducerSlotSource & (1ULL << i)) == sourceBit) 321 mProducerBuffers[i].clear(); 322 } 323 } 324 if (result & BUFFER_NEEDS_REALLOCATION) { 325 result = mSource[source]->requestBuffer(*sslot, &mProducerBuffers[pslot]); 326 if (result < 0) { 327 mProducerBuffers[pslot].clear(); 328 mSource[source]->cancelBuffer(*sslot, *fence); 329 return result; 330 } 331 VDS_LOGV("dequeueBuffer(%s): buffers[%d]=%p fmt=%d usage=%#x", 332 dbgSourceStr(source), pslot, mProducerBuffers[pslot].get(), 333 mProducerBuffers[pslot]->getPixelFormat(), 334 mProducerBuffers[pslot]->getUsage()); 335 } 336 337 return result; 338} 339 340status_t VirtualDisplaySurface::dequeueBuffer(int* pslot, sp<Fence>* fence, 341 uint32_t w, uint32_t h, PixelFormat format, uint32_t usage) { 342 if (mDisplayId < 0) 343 return mSource[SOURCE_SINK]->dequeueBuffer(pslot, fence, w, h, format, usage); 344 345 VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED, 346 "Unexpected dequeueBuffer() in %s state", dbgStateStr()); 347 mDbgState = DBG_STATE_GLES; 348 349 VDS_LOGV("dequeueBuffer %dx%d fmt=%d usage=%#x", w, h, format, usage); 350 351 status_t result = NO_ERROR; 352 Source source = fbSourceForCompositionType(mCompositionType); 353 354 if (source == SOURCE_SINK) { 355 356 if (mOutputProducerSlot < 0) { 357 // Last chance bailout if something bad happened earlier. For example, 358 // in a GLES configuration, if the sink disappears then dequeueBuffer 359 // will fail, the GLES driver won't queue a buffer, but SurfaceFlinger 360 // will soldier on. So we end up here without a buffer. There should 361 // be lots of scary messages in the log just before this. 362 VDS_LOGE("dequeueBuffer: no buffer, bailing out"); 363 return NO_MEMORY; 364 } 365 366 // We already dequeued the output buffer. If the GLES driver wants 367 // something incompatible, we have to cancel and get a new one. This 368 // will mean that HWC will see a different output buffer between 369 // prepare and set, but since we're in GLES-only mode already it 370 // shouldn't matter. 371 372 usage |= GRALLOC_USAGE_HW_COMPOSER; 373 const sp<GraphicBuffer>& buf = mProducerBuffers[mOutputProducerSlot]; 374 if ((usage & ~buf->getUsage()) != 0 || 375 (format != 0 && format != buf->getPixelFormat()) || 376 (w != 0 && w != mSinkBufferWidth) || 377 (h != 0 && h != mSinkBufferHeight)) { 378 VDS_LOGV("dequeueBuffer: dequeueing new output buffer: " 379 "want %dx%d fmt=%d use=%#x, " 380 "have %dx%d fmt=%d use=%#x", 381 w, h, format, usage, 382 mSinkBufferWidth, mSinkBufferHeight, 383 buf->getPixelFormat(), buf->getUsage()); 384 mOutputFormat = format; 385 mOutputUsage = usage; 386 result = refreshOutputBuffer(); 387 if (result < 0) 388 return result; 389 } 390 } 391 392 if (source == SOURCE_SINK) { 393 *pslot = mOutputProducerSlot; 394 *fence = mOutputFence; 395 } else { 396 int sslot; 397 result = dequeueBuffer(source, format, usage, &sslot, fence); 398 if (result >= 0) { 399 *pslot = mapSource2ProducerSlot(source, sslot); 400 } 401 } 402 return result; 403} 404 405status_t VirtualDisplaySurface::detachBuffer(int /* slot */) { 406 VDS_LOGE("detachBuffer is not available for VirtualDisplaySurface"); 407 return INVALID_OPERATION; 408} 409 410status_t VirtualDisplaySurface::detachNextBuffer( 411 sp<GraphicBuffer>* /* outBuffer */, sp<Fence>* /* outFence */) { 412 VDS_LOGE("detachNextBuffer is not available for VirtualDisplaySurface"); 413 return INVALID_OPERATION; 414} 415 416status_t VirtualDisplaySurface::attachBuffer(int* /* outSlot */, 417 const sp<GraphicBuffer>& /* buffer */) { 418 VDS_LOGE("attachBuffer is not available for VirtualDisplaySurface"); 419 return INVALID_OPERATION; 420} 421 422status_t VirtualDisplaySurface::queueBuffer(int pslot, 423 const QueueBufferInput& input, QueueBufferOutput* output) { 424 if (mDisplayId < 0) 425 return mSource[SOURCE_SINK]->queueBuffer(pslot, input, output); 426 427 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 428 "Unexpected queueBuffer(pslot=%d) in %s state", pslot, 429 dbgStateStr()); 430 mDbgState = DBG_STATE_GLES_DONE; 431 432 VDS_LOGV("queueBuffer pslot=%d", pslot); 433 434 status_t result; 435 if (mCompositionType == COMPOSITION_MIXED) { 436 // Queue the buffer back into the scratch pool 437 QueueBufferOutput scratchQBO; 438 int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, pslot); 439 result = mSource[SOURCE_SCRATCH]->queueBuffer(sslot, input, &scratchQBO); 440 if (result != NO_ERROR) 441 return result; 442 443 // Now acquire the buffer from the scratch pool -- should be the same 444 // slot and fence as we just queued. 445 Mutex::Autolock lock(mMutex); 446 BufferItem item; 447 result = acquireBufferLocked(&item, 0); 448 if (result != NO_ERROR) 449 return result; 450 VDS_LOGW_IF(item.mSlot != sslot, 451 "queueBuffer: acquired sslot %d from SCRATCH after queueing sslot %d", 452 item.mSlot, sslot); 453 mFbProducerSlot = mapSource2ProducerSlot(SOURCE_SCRATCH, item.mSlot); 454 mFbFence = mSlots[item.mSlot].mFence; 455 456 } else { 457 LOG_FATAL_IF(mCompositionType != COMPOSITION_GLES, 458 "Unexpected queueBuffer in state %s for compositionType %s", 459 dbgStateStr(), dbgCompositionTypeStr(mCompositionType)); 460 461 // Extract the GLES release fence for HWC to acquire 462 int64_t timestamp; 463 bool isAutoTimestamp; 464 android_dataspace dataSpace; 465 Rect crop; 466 int scalingMode; 467 uint32_t transform; 468 input.deflate(×tamp, &isAutoTimestamp, &dataSpace, &crop, 469 &scalingMode, &transform, &mFbFence); 470 471 mFbProducerSlot = pslot; 472 mOutputFence = mFbFence; 473 } 474 475 *output = mQueueBufferOutput; 476 return NO_ERROR; 477} 478 479status_t VirtualDisplaySurface::cancelBuffer(int pslot, 480 const sp<Fence>& fence) { 481 if (mDisplayId < 0) 482 return mSource[SOURCE_SINK]->cancelBuffer(mapProducer2SourceSlot(SOURCE_SINK, pslot), fence); 483 484 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 485 "Unexpected cancelBuffer(pslot=%d) in %s state", pslot, 486 dbgStateStr()); 487 VDS_LOGV("cancelBuffer pslot=%d", pslot); 488 Source source = fbSourceForCompositionType(mCompositionType); 489 return mSource[source]->cancelBuffer( 490 mapProducer2SourceSlot(source, pslot), fence); 491} 492 493int VirtualDisplaySurface::query(int what, int* value) { 494 switch (what) { 495 case NATIVE_WINDOW_WIDTH: 496 *value = mSinkBufferWidth; 497 break; 498 case NATIVE_WINDOW_HEIGHT: 499 *value = mSinkBufferHeight; 500 break; 501 default: 502 return mSource[SOURCE_SINK]->query(what, value); 503 } 504 return NO_ERROR; 505} 506 507status_t VirtualDisplaySurface::connect(const sp<IProducerListener>& listener, 508 int api, bool producerControlledByApp, 509 QueueBufferOutput* output) { 510 QueueBufferOutput qbo; 511 status_t result = mSource[SOURCE_SINK]->connect(listener, api, 512 producerControlledByApp, &qbo); 513 if (result == NO_ERROR) { 514 updateQueueBufferOutput(qbo); 515 *output = mQueueBufferOutput; 516 } 517 return result; 518} 519 520status_t VirtualDisplaySurface::disconnect(int api) { 521 return mSource[SOURCE_SINK]->disconnect(api); 522} 523 524status_t VirtualDisplaySurface::setSidebandStream(const sp<NativeHandle>& /*stream*/) { 525 return INVALID_OPERATION; 526} 527 528void VirtualDisplaySurface::allocateBuffers(uint32_t /* width */, 529 uint32_t /* height */, PixelFormat /* format */, uint32_t /* usage */) { 530 // TODO: Should we actually allocate buffers for a virtual display? 531} 532 533status_t VirtualDisplaySurface::allowAllocation(bool /* allow */) { 534 return INVALID_OPERATION; 535} 536 537status_t VirtualDisplaySurface::setGenerationNumber(uint32_t /* generation */) { 538 ALOGE("setGenerationNumber not supported on VirtualDisplaySurface"); 539 return INVALID_OPERATION; 540} 541 542String8 VirtualDisplaySurface::getConsumerName() const { 543 return String8("VirtualDisplaySurface"); 544} 545 546void VirtualDisplaySurface::updateQueueBufferOutput( 547 const QueueBufferOutput& qbo) { 548 uint32_t w, h, transformHint, numPendingBuffers; 549 qbo.deflate(&w, &h, &transformHint, &numPendingBuffers); 550 mQueueBufferOutput.inflate(w, h, 0, numPendingBuffers); 551} 552 553void VirtualDisplaySurface::resetPerFrameState() { 554 mCompositionType = COMPOSITION_UNKNOWN; 555 mFbFence = Fence::NO_FENCE; 556 mOutputFence = Fence::NO_FENCE; 557 mOutputProducerSlot = -1; 558 mFbProducerSlot = -1; 559} 560 561status_t VirtualDisplaySurface::refreshOutputBuffer() { 562 if (mOutputProducerSlot >= 0) { 563 mSource[SOURCE_SINK]->cancelBuffer( 564 mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot), 565 mOutputFence); 566 } 567 568 int sslot; 569 status_t result = dequeueBuffer(SOURCE_SINK, mOutputFormat, mOutputUsage, 570 &sslot, &mOutputFence); 571 if (result < 0) 572 return result; 573 mOutputProducerSlot = mapSource2ProducerSlot(SOURCE_SINK, sslot); 574 575 // On GLES-only frames, we don't have the right output buffer acquire fence 576 // until after GLES calls queueBuffer(). So here we just set the buffer 577 // (for use in HWC prepare) but not the fence; we'll call this again with 578 // the proper fence once we have it. 579 result = mHwc.setOutputBuffer(mDisplayId, Fence::NO_FENCE, 580 mProducerBuffers[mOutputProducerSlot]); 581 582 return result; 583} 584 585// This slot mapping function is its own inverse, so two copies are unnecessary. 586// Both are kept to make the intent clear where the function is called, and for 587// the (unlikely) chance that we switch to a different mapping function. 588int VirtualDisplaySurface::mapSource2ProducerSlot(Source source, int sslot) { 589 if (source == SOURCE_SCRATCH) { 590 return BufferQueue::NUM_BUFFER_SLOTS - sslot - 1; 591 } else { 592 return sslot; 593 } 594} 595int VirtualDisplaySurface::mapProducer2SourceSlot(Source source, int pslot) { 596 return mapSource2ProducerSlot(source, pslot); 597} 598 599VirtualDisplaySurface::Source 600VirtualDisplaySurface::fbSourceForCompositionType(CompositionType type) { 601 return type == COMPOSITION_MIXED ? SOURCE_SCRATCH : SOURCE_SINK; 602} 603 604const char* VirtualDisplaySurface::dbgStateStr() const { 605 switch (mDbgState) { 606 case DBG_STATE_IDLE: return "IDLE"; 607 case DBG_STATE_PREPARED: return "PREPARED"; 608 case DBG_STATE_GLES: return "GLES"; 609 case DBG_STATE_GLES_DONE: return "GLES_DONE"; 610 case DBG_STATE_HWC: return "HWC"; 611 default: return "INVALID"; 612 } 613} 614 615const char* VirtualDisplaySurface::dbgSourceStr(Source s) { 616 switch (s) { 617 case SOURCE_SINK: return "SINK"; 618 case SOURCE_SCRATCH: return "SCRATCH"; 619 default: return "INVALID"; 620 } 621} 622 623// --------------------------------------------------------------------------- 624} // namespace android 625// --------------------------------------------------------------------------- 626