VirtualDisplaySurface.cpp revision 82c6bcc9705eabcaf5b9e45bc81867b0e2d61a02
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// --------------------------------------------------------------------------- 22namespace android { 23// --------------------------------------------------------------------------- 24 25#if defined(FORCE_HWC_COPY_FOR_VIRTUAL_DISPLAYS) 26static const bool sForceHwcCopy = true; 27#else 28static const bool sForceHwcCopy = false; 29#endif 30 31#define VDS_LOGE(msg, ...) ALOGE("[%s] " msg, \ 32 mDisplayName.string(), ##__VA_ARGS__) 33#define VDS_LOGW_IF(cond, msg, ...) ALOGW_IF(cond, "[%s] " msg, \ 34 mDisplayName.string(), ##__VA_ARGS__) 35#define VDS_LOGV(msg, ...) ALOGV("[%s] " msg, \ 36 mDisplayName.string(), ##__VA_ARGS__) 37 38static const char* dbgCompositionTypeStr(DisplaySurface::CompositionType type) { 39 switch (type) { 40 case DisplaySurface::COMPOSITION_UNKNOWN: return "UNKNOWN"; 41 case DisplaySurface::COMPOSITION_GLES: return "GLES"; 42 case DisplaySurface::COMPOSITION_HWC: return "HWC"; 43 case DisplaySurface::COMPOSITION_MIXED: return "MIXED"; 44 default: return "<INVALID>"; 45 } 46} 47 48VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int32_t dispId, 49 const sp<IGraphicBufferProducer>& sink, 50 const sp<IGraphicBufferProducer>& bqProducer, 51 const sp<IGraphicBufferConsumer>& bqConsumer, 52 const String8& name) 53: ConsumerBase(bqConsumer), 54 mHwc(hwc), 55 mDisplayId(dispId), 56 mDisplayName(name), 57 mOutputUsage(GRALLOC_USAGE_HW_COMPOSER), 58 mProducerSlotSource(0), 59 mDbgState(DBG_STATE_IDLE), 60 mDbgLastCompositionType(COMPOSITION_UNKNOWN), 61 mMustRecompose(false) 62{ 63 mSource[SOURCE_SINK] = sink; 64 mSource[SOURCE_SCRATCH] = bqProducer; 65 66 resetPerFrameState(); 67 68 int sinkWidth, sinkHeight; 69 sink->query(NATIVE_WINDOW_WIDTH, &sinkWidth); 70 sink->query(NATIVE_WINDOW_HEIGHT, &sinkHeight); 71 mSinkBufferWidth = sinkWidth; 72 mSinkBufferHeight = sinkHeight; 73 74 // Pick the buffer format to request from the sink when not rendering to it 75 // with GLES. If the consumer needs CPU access, use the default format 76 // set by the consumer. Otherwise allow gralloc to decide the format based 77 // on usage bits. 78 int sinkUsage; 79 sink->query(NATIVE_WINDOW_CONSUMER_USAGE_BITS, &sinkUsage); 80 if (sinkUsage & (GRALLOC_USAGE_SW_READ_MASK | GRALLOC_USAGE_SW_WRITE_MASK)) { 81 int sinkFormat; 82 sink->query(NATIVE_WINDOW_FORMAT, &sinkFormat); 83 mDefaultOutputFormat = sinkFormat; 84 } else { 85 mDefaultOutputFormat = HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED; 86 } 87 mOutputFormat = mDefaultOutputFormat; 88 89 ConsumerBase::mName = String8::format("VDS: %s", mDisplayName.string()); 90 mConsumer->setConsumerName(ConsumerBase::mName); 91 mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_COMPOSER); 92 mConsumer->setDefaultBufferSize(sinkWidth, sinkHeight); 93 mConsumer->setDefaultMaxBufferCount(2); 94} 95 96VirtualDisplaySurface::~VirtualDisplaySurface() { 97} 98 99status_t VirtualDisplaySurface::beginFrame(bool mustRecompose) { 100 if (mDisplayId < 0) 101 return NO_ERROR; 102 103 mMustRecompose = mustRecompose; 104 105 VDS_LOGW_IF(mDbgState != DBG_STATE_IDLE, 106 "Unexpected beginFrame() in %s state", dbgStateStr()); 107 mDbgState = DBG_STATE_BEGUN; 108 109 return refreshOutputBuffer(); 110} 111 112status_t VirtualDisplaySurface::prepareFrame(CompositionType compositionType) { 113 if (mDisplayId < 0) 114 return NO_ERROR; 115 116 VDS_LOGW_IF(mDbgState != DBG_STATE_BEGUN, 117 "Unexpected prepareFrame() in %s state", dbgStateStr()); 118 mDbgState = DBG_STATE_PREPARED; 119 120 mCompositionType = compositionType; 121 if (sForceHwcCopy && mCompositionType == COMPOSITION_GLES) { 122 // Some hardware can do RGB->YUV conversion more efficiently in hardware 123 // controlled by HWC than in hardware controlled by the video encoder. 124 // Forcing GLES-composed frames to go through an extra copy by the HWC 125 // allows the format conversion to happen there, rather than passing RGB 126 // directly to the consumer. 127 // 128 // On the other hand, when the consumer prefers RGB or can consume RGB 129 // inexpensively, this forces an unnecessary copy. 130 mCompositionType = COMPOSITION_MIXED; 131 } 132 133 if (mCompositionType != mDbgLastCompositionType) { 134 VDS_LOGV("prepareFrame: composition type changed to %s", 135 dbgCompositionTypeStr(mCompositionType)); 136 mDbgLastCompositionType = mCompositionType; 137 } 138 139 if (mCompositionType != COMPOSITION_GLES && 140 (mOutputFormat != mDefaultOutputFormat || 141 mOutputUsage != GRALLOC_USAGE_HW_COMPOSER)) { 142 // We must have just switched from GLES-only to MIXED or HWC 143 // composition. Stop using the format and usage requested by the GLES 144 // driver; they may be suboptimal when HWC is writing to the output 145 // buffer. For example, if the output is going to a video encoder, and 146 // HWC can write directly to YUV, some hardware can skip a 147 // memory-to-memory RGB-to-YUV conversion step. 148 // 149 // If we just switched *to* GLES-only mode, we'll change the 150 // format/usage and get a new buffer when the GLES driver calls 151 // dequeueBuffer(). 152 mOutputFormat = mDefaultOutputFormat; 153 mOutputUsage = GRALLOC_USAGE_HW_COMPOSER; 154 refreshOutputBuffer(); 155 } 156 157 return NO_ERROR; 158} 159 160status_t VirtualDisplaySurface::compositionComplete() { 161 return NO_ERROR; 162} 163 164status_t VirtualDisplaySurface::advanceFrame() { 165 if (mDisplayId < 0) 166 return NO_ERROR; 167 168 if (mCompositionType == COMPOSITION_HWC) { 169 VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED, 170 "Unexpected advanceFrame() in %s state on HWC frame", 171 dbgStateStr()); 172 } else { 173 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES_DONE, 174 "Unexpected advanceFrame() in %s state on GLES/MIXED frame", 175 dbgStateStr()); 176 } 177 mDbgState = DBG_STATE_HWC; 178 179 if (mOutputProducerSlot < 0 || 180 (mCompositionType != COMPOSITION_HWC && mFbProducerSlot < 0)) { 181 // Last chance bailout if something bad happened earlier. For example, 182 // in a GLES configuration, if the sink disappears then dequeueBuffer 183 // will fail, the GLES driver won't queue a buffer, but SurfaceFlinger 184 // will soldier on. So we end up here without a buffer. There should 185 // be lots of scary messages in the log just before this. 186 VDS_LOGE("advanceFrame: no buffer, bailing out"); 187 return NO_MEMORY; 188 } 189 190 sp<GraphicBuffer> fbBuffer = mFbProducerSlot >= 0 ? 191 mProducerBuffers[mFbProducerSlot] : sp<GraphicBuffer>(NULL); 192 sp<GraphicBuffer> outBuffer = mProducerBuffers[mOutputProducerSlot]; 193 VDS_LOGV("advanceFrame: fb=%d(%p) out=%d(%p)", 194 mFbProducerSlot, fbBuffer.get(), 195 mOutputProducerSlot, outBuffer.get()); 196 197 // At this point we know the output buffer acquire fence, 198 // so update HWC state with it. 199 mHwc.setOutputBuffer(mDisplayId, mOutputFence, outBuffer); 200 201 status_t result = NO_ERROR; 202 if (fbBuffer != NULL) { 203 result = mHwc.fbPost(mDisplayId, mFbFence, fbBuffer); 204 } 205 206 return result; 207} 208 209void VirtualDisplaySurface::onFrameCommitted() { 210 if (mDisplayId < 0) 211 return; 212 213 VDS_LOGW_IF(mDbgState != DBG_STATE_HWC, 214 "Unexpected onFrameCommitted() in %s state", dbgStateStr()); 215 mDbgState = DBG_STATE_IDLE; 216 217 sp<Fence> fbFence = mHwc.getAndResetReleaseFence(mDisplayId); 218 if (mCompositionType == COMPOSITION_MIXED && mFbProducerSlot >= 0) { 219 // release the scratch buffer back to the pool 220 Mutex::Autolock lock(mMutex); 221 int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, mFbProducerSlot); 222 VDS_LOGV("onFrameCommitted: release scratch sslot=%d", sslot); 223 addReleaseFenceLocked(sslot, mProducerBuffers[mFbProducerSlot], fbFence); 224 releaseBufferLocked(sslot, mProducerBuffers[mFbProducerSlot], 225 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR); 226 } 227 228 if (mOutputProducerSlot >= 0) { 229 int sslot = mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot); 230 QueueBufferOutput qbo; 231 sp<Fence> outFence = mHwc.getLastRetireFence(mDisplayId); 232 VDS_LOGV("onFrameCommitted: queue sink sslot=%d", sslot); 233 if (mMustRecompose) { 234 status_t result = mSource[SOURCE_SINK]->queueBuffer(sslot, 235 QueueBufferInput( 236 systemTime(), false /* isAutoTimestamp */, 237 HAL_DATASPACE_UNKNOWN, 238 Rect(mSinkBufferWidth, mSinkBufferHeight), 239 NATIVE_WINDOW_SCALING_MODE_FREEZE, 0 /* transform */, 240 true /* async*/, 241 outFence), 242 &qbo); 243 if (result == NO_ERROR) { 244 updateQueueBufferOutput(qbo); 245 } 246 } else { 247 // If the surface hadn't actually been updated, then we only went 248 // through the motions of updating the display to keep our state 249 // machine happy. We cancel the buffer to avoid triggering another 250 // re-composition and causing an infinite loop. 251 mSource[SOURCE_SINK]->cancelBuffer(sslot, outFence); 252 } 253 } 254 255 resetPerFrameState(); 256} 257 258void VirtualDisplaySurface::dumpAsString(String8& /* result */) const { 259} 260 261void VirtualDisplaySurface::resizeBuffers(const uint32_t w, const uint32_t h) { 262 uint32_t tmpW, tmpH, transformHint, numPendingBuffers; 263 mQueueBufferOutput.deflate(&tmpW, &tmpH, &transformHint, &numPendingBuffers); 264 mQueueBufferOutput.inflate(w, h, transformHint, numPendingBuffers); 265 266 mSinkBufferWidth = w; 267 mSinkBufferHeight = h; 268} 269 270status_t VirtualDisplaySurface::requestBuffer(int pslot, 271 sp<GraphicBuffer>* outBuf) { 272 if (mDisplayId < 0) 273 return mSource[SOURCE_SINK]->requestBuffer(pslot, outBuf); 274 275 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 276 "Unexpected requestBuffer pslot=%d in %s state", 277 pslot, dbgStateStr()); 278 279 *outBuf = mProducerBuffers[pslot]; 280 return NO_ERROR; 281} 282 283status_t VirtualDisplaySurface::setBufferCount(int bufferCount) { 284 return mSource[SOURCE_SINK]->setBufferCount(bufferCount); 285} 286 287status_t VirtualDisplaySurface::dequeueBuffer(Source source, 288 PixelFormat format, uint32_t usage, int* sslot, sp<Fence>* fence) { 289 LOG_FATAL_IF(mDisplayId < 0, "mDisplayId=%d but should not be < 0.", mDisplayId); 290 // Don't let a slow consumer block us 291 bool async = (source == SOURCE_SINK); 292 293 status_t result = mSource[source]->dequeueBuffer(sslot, fence, async, 294 mSinkBufferWidth, mSinkBufferHeight, format, usage); 295 if (result < 0) 296 return result; 297 int pslot = mapSource2ProducerSlot(source, *sslot); 298 VDS_LOGV("dequeueBuffer(%s): sslot=%d pslot=%d result=%d", 299 dbgSourceStr(source), *sslot, pslot, result); 300 uint64_t sourceBit = static_cast<uint64_t>(source) << pslot; 301 302 if ((mProducerSlotSource & (1ULL << pslot)) != sourceBit) { 303 // This slot was previously dequeued from the other source; must 304 // re-request the buffer. 305 result |= BUFFER_NEEDS_REALLOCATION; 306 mProducerSlotSource &= ~(1ULL << pslot); 307 mProducerSlotSource |= sourceBit; 308 } 309 310 if (result & RELEASE_ALL_BUFFERS) { 311 for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) { 312 if ((mProducerSlotSource & (1ULL << i)) == sourceBit) 313 mProducerBuffers[i].clear(); 314 } 315 } 316 if (result & BUFFER_NEEDS_REALLOCATION) { 317 result = mSource[source]->requestBuffer(*sslot, &mProducerBuffers[pslot]); 318 if (result < 0) { 319 mProducerBuffers[pslot].clear(); 320 mSource[source]->cancelBuffer(*sslot, *fence); 321 return result; 322 } 323 VDS_LOGV("dequeueBuffer(%s): buffers[%d]=%p fmt=%d usage=%#x", 324 dbgSourceStr(source), pslot, mProducerBuffers[pslot].get(), 325 mProducerBuffers[pslot]->getPixelFormat(), 326 mProducerBuffers[pslot]->getUsage()); 327 } 328 329 return result; 330} 331 332status_t VirtualDisplaySurface::dequeueBuffer(int* pslot, sp<Fence>* fence, bool async, 333 uint32_t w, uint32_t h, PixelFormat format, uint32_t usage) { 334 if (mDisplayId < 0) 335 return mSource[SOURCE_SINK]->dequeueBuffer(pslot, fence, async, w, h, format, usage); 336 337 VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED, 338 "Unexpected dequeueBuffer() in %s state", dbgStateStr()); 339 mDbgState = DBG_STATE_GLES; 340 341 VDS_LOGW_IF(!async, "EGL called dequeueBuffer with !async despite eglSwapInterval(0)"); 342 VDS_LOGV("dequeueBuffer %dx%d fmt=%d usage=%#x", w, h, format, usage); 343 344 status_t result = NO_ERROR; 345 Source source = fbSourceForCompositionType(mCompositionType); 346 347 if (source == SOURCE_SINK) { 348 349 if (mOutputProducerSlot < 0) { 350 // Last chance bailout if something bad happened earlier. For example, 351 // in a GLES configuration, if the sink disappears then dequeueBuffer 352 // will fail, the GLES driver won't queue a buffer, but SurfaceFlinger 353 // will soldier on. So we end up here without a buffer. There should 354 // be lots of scary messages in the log just before this. 355 VDS_LOGE("dequeueBuffer: no buffer, bailing out"); 356 return NO_MEMORY; 357 } 358 359 // We already dequeued the output buffer. If the GLES driver wants 360 // something incompatible, we have to cancel and get a new one. This 361 // will mean that HWC will see a different output buffer between 362 // prepare and set, but since we're in GLES-only mode already it 363 // shouldn't matter. 364 365 usage |= GRALLOC_USAGE_HW_COMPOSER; 366 const sp<GraphicBuffer>& buf = mProducerBuffers[mOutputProducerSlot]; 367 if ((usage & ~buf->getUsage()) != 0 || 368 (format != 0 && format != buf->getPixelFormat()) || 369 (w != 0 && w != mSinkBufferWidth) || 370 (h != 0 && h != mSinkBufferHeight)) { 371 VDS_LOGV("dequeueBuffer: dequeueing new output buffer: " 372 "want %dx%d fmt=%d use=%#x, " 373 "have %dx%d fmt=%d use=%#x", 374 w, h, format, usage, 375 mSinkBufferWidth, mSinkBufferHeight, 376 buf->getPixelFormat(), buf->getUsage()); 377 mOutputFormat = format; 378 mOutputUsage = usage; 379 result = refreshOutputBuffer(); 380 if (result < 0) 381 return result; 382 } 383 } 384 385 if (source == SOURCE_SINK) { 386 *pslot = mOutputProducerSlot; 387 *fence = mOutputFence; 388 } else { 389 int sslot; 390 result = dequeueBuffer(source, format, usage, &sslot, fence); 391 if (result >= 0) { 392 *pslot = mapSource2ProducerSlot(source, sslot); 393 } 394 } 395 return result; 396} 397 398status_t VirtualDisplaySurface::detachBuffer(int /* slot */) { 399 VDS_LOGE("detachBuffer is not available for VirtualDisplaySurface"); 400 return INVALID_OPERATION; 401} 402 403status_t VirtualDisplaySurface::detachNextBuffer( 404 sp<GraphicBuffer>* /* outBuffer */, sp<Fence>* /* outFence */) { 405 VDS_LOGE("detachNextBuffer is not available for VirtualDisplaySurface"); 406 return INVALID_OPERATION; 407} 408 409status_t VirtualDisplaySurface::attachBuffer(int* /* outSlot */, 410 const sp<GraphicBuffer>& /* buffer */) { 411 VDS_LOGE("attachBuffer is not available for VirtualDisplaySurface"); 412 return INVALID_OPERATION; 413} 414 415status_t VirtualDisplaySurface::queueBuffer(int pslot, 416 const QueueBufferInput& input, QueueBufferOutput* output) { 417 if (mDisplayId < 0) 418 return mSource[SOURCE_SINK]->queueBuffer(pslot, input, output); 419 420 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 421 "Unexpected queueBuffer(pslot=%d) in %s state", pslot, 422 dbgStateStr()); 423 mDbgState = DBG_STATE_GLES_DONE; 424 425 VDS_LOGV("queueBuffer pslot=%d", pslot); 426 427 status_t result; 428 if (mCompositionType == COMPOSITION_MIXED) { 429 // Queue the buffer back into the scratch pool 430 QueueBufferOutput scratchQBO; 431 int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, pslot); 432 result = mSource[SOURCE_SCRATCH]->queueBuffer(sslot, input, &scratchQBO); 433 if (result != NO_ERROR) 434 return result; 435 436 // Now acquire the buffer from the scratch pool -- should be the same 437 // slot and fence as we just queued. 438 Mutex::Autolock lock(mMutex); 439 BufferQueue::BufferItem item; 440 result = acquireBufferLocked(&item, 0); 441 if (result != NO_ERROR) 442 return result; 443 VDS_LOGW_IF(item.mBuf != sslot, 444 "queueBuffer: acquired sslot %d from SCRATCH after queueing sslot %d", 445 item.mBuf, sslot); 446 mFbProducerSlot = mapSource2ProducerSlot(SOURCE_SCRATCH, item.mBuf); 447 mFbFence = mSlots[item.mBuf].mFence; 448 449 } else { 450 LOG_FATAL_IF(mCompositionType != COMPOSITION_GLES, 451 "Unexpected queueBuffer in state %s for compositionType %s", 452 dbgStateStr(), dbgCompositionTypeStr(mCompositionType)); 453 454 // Extract the GLES release fence for HWC to acquire 455 int64_t timestamp; 456 bool isAutoTimestamp; 457 android_dataspace dataSpace; 458 Rect crop; 459 int scalingMode; 460 uint32_t transform; 461 bool async; 462 input.deflate(×tamp, &isAutoTimestamp, &dataSpace, &crop, 463 &scalingMode, &transform, &async, &mFbFence); 464 465 mFbProducerSlot = pslot; 466 mOutputFence = mFbFence; 467 } 468 469 *output = mQueueBufferOutput; 470 return NO_ERROR; 471} 472 473void VirtualDisplaySurface::cancelBuffer(int pslot, const sp<Fence>& fence) { 474 if (mDisplayId < 0) 475 return mSource[SOURCE_SINK]->cancelBuffer(mapProducer2SourceSlot(SOURCE_SINK, pslot), fence); 476 477 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 478 "Unexpected cancelBuffer(pslot=%d) in %s state", pslot, 479 dbgStateStr()); 480 VDS_LOGV("cancelBuffer pslot=%d", pslot); 481 Source source = fbSourceForCompositionType(mCompositionType); 482 return mSource[source]->cancelBuffer( 483 mapProducer2SourceSlot(source, pslot), fence); 484} 485 486int VirtualDisplaySurface::query(int what, int* value) { 487 switch (what) { 488 case NATIVE_WINDOW_WIDTH: 489 *value = mSinkBufferWidth; 490 break; 491 case NATIVE_WINDOW_HEIGHT: 492 *value = mSinkBufferHeight; 493 break; 494 default: 495 return mSource[SOURCE_SINK]->query(what, value); 496 } 497 return NO_ERROR; 498} 499 500status_t VirtualDisplaySurface::connect(const sp<IProducerListener>& listener, 501 int api, bool producerControlledByApp, 502 QueueBufferOutput* output) { 503 QueueBufferOutput qbo; 504 status_t result = mSource[SOURCE_SINK]->connect(listener, api, 505 producerControlledByApp, &qbo); 506 if (result == NO_ERROR) { 507 updateQueueBufferOutput(qbo); 508 *output = mQueueBufferOutput; 509 } 510 return result; 511} 512 513status_t VirtualDisplaySurface::disconnect(int api) { 514 return mSource[SOURCE_SINK]->disconnect(api); 515} 516 517status_t VirtualDisplaySurface::setSidebandStream(const sp<NativeHandle>& /*stream*/) { 518 return INVALID_OPERATION; 519} 520 521void VirtualDisplaySurface::allocateBuffers(bool /* async */, 522 uint32_t /* width */, uint32_t /* height */, PixelFormat /* format */, 523 uint32_t /* usage */) { 524 // TODO: Should we actually allocate buffers for a virtual display? 525} 526 527void VirtualDisplaySurface::updateQueueBufferOutput( 528 const QueueBufferOutput& qbo) { 529 uint32_t w, h, transformHint, numPendingBuffers; 530 qbo.deflate(&w, &h, &transformHint, &numPendingBuffers); 531 mQueueBufferOutput.inflate(w, h, 0, numPendingBuffers); 532} 533 534void VirtualDisplaySurface::resetPerFrameState() { 535 mCompositionType = COMPOSITION_UNKNOWN; 536 mFbFence = Fence::NO_FENCE; 537 mOutputFence = Fence::NO_FENCE; 538 mOutputProducerSlot = -1; 539 mFbProducerSlot = -1; 540} 541 542status_t VirtualDisplaySurface::refreshOutputBuffer() { 543 if (mOutputProducerSlot >= 0) { 544 mSource[SOURCE_SINK]->cancelBuffer( 545 mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot), 546 mOutputFence); 547 } 548 549 int sslot; 550 status_t result = dequeueBuffer(SOURCE_SINK, mOutputFormat, mOutputUsage, 551 &sslot, &mOutputFence); 552 if (result < 0) 553 return result; 554 mOutputProducerSlot = mapSource2ProducerSlot(SOURCE_SINK, sslot); 555 556 // On GLES-only frames, we don't have the right output buffer acquire fence 557 // until after GLES calls queueBuffer(). So here we just set the buffer 558 // (for use in HWC prepare) but not the fence; we'll call this again with 559 // the proper fence once we have it. 560 result = mHwc.setOutputBuffer(mDisplayId, Fence::NO_FENCE, 561 mProducerBuffers[mOutputProducerSlot]); 562 563 return result; 564} 565 566// This slot mapping function is its own inverse, so two copies are unnecessary. 567// Both are kept to make the intent clear where the function is called, and for 568// the (unlikely) chance that we switch to a different mapping function. 569int VirtualDisplaySurface::mapSource2ProducerSlot(Source source, int sslot) { 570 if (source == SOURCE_SCRATCH) { 571 return BufferQueue::NUM_BUFFER_SLOTS - sslot - 1; 572 } else { 573 return sslot; 574 } 575} 576int VirtualDisplaySurface::mapProducer2SourceSlot(Source source, int pslot) { 577 return mapSource2ProducerSlot(source, pslot); 578} 579 580VirtualDisplaySurface::Source 581VirtualDisplaySurface::fbSourceForCompositionType(CompositionType type) { 582 return type == COMPOSITION_MIXED ? SOURCE_SCRATCH : SOURCE_SINK; 583} 584 585const char* VirtualDisplaySurface::dbgStateStr() const { 586 switch (mDbgState) { 587 case DBG_STATE_IDLE: return "IDLE"; 588 case DBG_STATE_PREPARED: return "PREPARED"; 589 case DBG_STATE_GLES: return "GLES"; 590 case DBG_STATE_GLES_DONE: return "GLES_DONE"; 591 case DBG_STATE_HWC: return "HWC"; 592 default: return "INVALID"; 593 } 594} 595 596const char* VirtualDisplaySurface::dbgSourceStr(Source s) { 597 switch (s) { 598 case SOURCE_SINK: return "SINK"; 599 case SOURCE_SCRATCH: return "SCRATCH"; 600 default: return "INVALID"; 601 } 602} 603 604// --------------------------------------------------------------------------- 605} // namespace android 606// --------------------------------------------------------------------------- 607