VirtualDisplaySurface.cpp revision 567dbbb6dd42be5013fcde0dadb3316d85f2fa0d
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 sink->setAsyncMode(true); 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 outFence), 243 &qbo); 244 if (result == NO_ERROR) { 245 updateQueueBufferOutput(qbo); 246 } 247 } else { 248 // If the surface hadn't actually been updated, then we only went 249 // through the motions of updating the display to keep our state 250 // machine happy. We cancel the buffer to avoid triggering another 251 // re-composition and causing an infinite loop. 252 mSource[SOURCE_SINK]->cancelBuffer(sslot, outFence); 253 } 254 } 255 256 resetPerFrameState(); 257} 258 259void VirtualDisplaySurface::dumpAsString(String8& /* result */) const { 260} 261 262void VirtualDisplaySurface::resizeBuffers(const uint32_t w, const uint32_t h) { 263 uint32_t tmpW, tmpH, transformHint, numPendingBuffers; 264 mQueueBufferOutput.deflate(&tmpW, &tmpH, &transformHint, &numPendingBuffers); 265 mQueueBufferOutput.inflate(w, h, transformHint, numPendingBuffers); 266 267 mSinkBufferWidth = w; 268 mSinkBufferHeight = h; 269} 270 271status_t VirtualDisplaySurface::requestBuffer(int pslot, 272 sp<GraphicBuffer>* outBuf) { 273 if (mDisplayId < 0) 274 return mSource[SOURCE_SINK]->requestBuffer(pslot, outBuf); 275 276 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 277 "Unexpected requestBuffer pslot=%d in %s state", 278 pslot, dbgStateStr()); 279 280 *outBuf = mProducerBuffers[pslot]; 281 return NO_ERROR; 282} 283 284status_t VirtualDisplaySurface::setMaxDequeuedBufferCount( 285 int maxDequeuedBuffers) { 286 return mSource[SOURCE_SINK]->setMaxDequeuedBufferCount(maxDequeuedBuffers); 287} 288 289status_t VirtualDisplaySurface::setAsyncMode(bool async) { 290 return mSource[SOURCE_SINK]->setAsyncMode(async); 291} 292 293status_t VirtualDisplaySurface::dequeueBuffer(Source source, 294 PixelFormat format, uint32_t usage, int* sslot, sp<Fence>* fence) { 295 LOG_FATAL_IF(mDisplayId < 0, "mDisplayId=%d but should not be < 0.", mDisplayId); 296 297 status_t result = mSource[source]->dequeueBuffer(sslot, fence, 298 mSinkBufferWidth, mSinkBufferHeight, format, usage); 299 if (result < 0) 300 return result; 301 int pslot = mapSource2ProducerSlot(source, *sslot); 302 VDS_LOGV("dequeueBuffer(%s): sslot=%d pslot=%d result=%d", 303 dbgSourceStr(source), *sslot, pslot, result); 304 uint64_t sourceBit = static_cast<uint64_t>(source) << pslot; 305 306 if ((mProducerSlotSource & (1ULL << pslot)) != sourceBit) { 307 // This slot was previously dequeued from the other source; must 308 // re-request the buffer. 309 result |= BUFFER_NEEDS_REALLOCATION; 310 mProducerSlotSource &= ~(1ULL << pslot); 311 mProducerSlotSource |= sourceBit; 312 } 313 314 if (result & RELEASE_ALL_BUFFERS) { 315 for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) { 316 if ((mProducerSlotSource & (1ULL << i)) == sourceBit) 317 mProducerBuffers[i].clear(); 318 } 319 } 320 if (result & BUFFER_NEEDS_REALLOCATION) { 321 result = mSource[source]->requestBuffer(*sslot, &mProducerBuffers[pslot]); 322 if (result < 0) { 323 mProducerBuffers[pslot].clear(); 324 mSource[source]->cancelBuffer(*sslot, *fence); 325 return result; 326 } 327 VDS_LOGV("dequeueBuffer(%s): buffers[%d]=%p fmt=%d usage=%#x", 328 dbgSourceStr(source), pslot, mProducerBuffers[pslot].get(), 329 mProducerBuffers[pslot]->getPixelFormat(), 330 mProducerBuffers[pslot]->getUsage()); 331 } 332 333 return result; 334} 335 336status_t VirtualDisplaySurface::dequeueBuffer(int* pslot, sp<Fence>* fence, 337 uint32_t w, uint32_t h, PixelFormat format, uint32_t usage) { 338 if (mDisplayId < 0) 339 return mSource[SOURCE_SINK]->dequeueBuffer(pslot, fence, w, h, format, usage); 340 341 VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED, 342 "Unexpected dequeueBuffer() in %s state", dbgStateStr()); 343 mDbgState = DBG_STATE_GLES; 344 345 VDS_LOGV("dequeueBuffer %dx%d fmt=%d usage=%#x", w, h, format, usage); 346 347 status_t result = NO_ERROR; 348 Source source = fbSourceForCompositionType(mCompositionType); 349 350 if (source == SOURCE_SINK) { 351 352 if (mOutputProducerSlot < 0) { 353 // Last chance bailout if something bad happened earlier. For example, 354 // in a GLES configuration, if the sink disappears then dequeueBuffer 355 // will fail, the GLES driver won't queue a buffer, but SurfaceFlinger 356 // will soldier on. So we end up here without a buffer. There should 357 // be lots of scary messages in the log just before this. 358 VDS_LOGE("dequeueBuffer: no buffer, bailing out"); 359 return NO_MEMORY; 360 } 361 362 // We already dequeued the output buffer. If the GLES driver wants 363 // something incompatible, we have to cancel and get a new one. This 364 // will mean that HWC will see a different output buffer between 365 // prepare and set, but since we're in GLES-only mode already it 366 // shouldn't matter. 367 368 usage |= GRALLOC_USAGE_HW_COMPOSER; 369 const sp<GraphicBuffer>& buf = mProducerBuffers[mOutputProducerSlot]; 370 if ((usage & ~buf->getUsage()) != 0 || 371 (format != 0 && format != buf->getPixelFormat()) || 372 (w != 0 && w != mSinkBufferWidth) || 373 (h != 0 && h != mSinkBufferHeight)) { 374 VDS_LOGV("dequeueBuffer: dequeueing new output buffer: " 375 "want %dx%d fmt=%d use=%#x, " 376 "have %dx%d fmt=%d use=%#x", 377 w, h, format, usage, 378 mSinkBufferWidth, mSinkBufferHeight, 379 buf->getPixelFormat(), buf->getUsage()); 380 mOutputFormat = format; 381 mOutputUsage = usage; 382 result = refreshOutputBuffer(); 383 if (result < 0) 384 return result; 385 } 386 } 387 388 if (source == SOURCE_SINK) { 389 *pslot = mOutputProducerSlot; 390 *fence = mOutputFence; 391 } else { 392 int sslot; 393 result = dequeueBuffer(source, format, usage, &sslot, fence); 394 if (result >= 0) { 395 *pslot = mapSource2ProducerSlot(source, sslot); 396 } 397 } 398 return result; 399} 400 401status_t VirtualDisplaySurface::detachBuffer(int /* slot */) { 402 VDS_LOGE("detachBuffer is not available for VirtualDisplaySurface"); 403 return INVALID_OPERATION; 404} 405 406status_t VirtualDisplaySurface::detachNextBuffer( 407 sp<GraphicBuffer>* /* outBuffer */, sp<Fence>* /* outFence */) { 408 VDS_LOGE("detachNextBuffer is not available for VirtualDisplaySurface"); 409 return INVALID_OPERATION; 410} 411 412status_t VirtualDisplaySurface::attachBuffer(int* /* outSlot */, 413 const sp<GraphicBuffer>& /* buffer */) { 414 VDS_LOGE("attachBuffer is not available for VirtualDisplaySurface"); 415 return INVALID_OPERATION; 416} 417 418status_t VirtualDisplaySurface::queueBuffer(int pslot, 419 const QueueBufferInput& input, QueueBufferOutput* output) { 420 if (mDisplayId < 0) 421 return mSource[SOURCE_SINK]->queueBuffer(pslot, input, output); 422 423 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 424 "Unexpected queueBuffer(pslot=%d) in %s state", pslot, 425 dbgStateStr()); 426 mDbgState = DBG_STATE_GLES_DONE; 427 428 VDS_LOGV("queueBuffer pslot=%d", pslot); 429 430 status_t result; 431 if (mCompositionType == COMPOSITION_MIXED) { 432 // Queue the buffer back into the scratch pool 433 QueueBufferOutput scratchQBO; 434 int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, pslot); 435 result = mSource[SOURCE_SCRATCH]->queueBuffer(sslot, input, &scratchQBO); 436 if (result != NO_ERROR) 437 return result; 438 439 // Now acquire the buffer from the scratch pool -- should be the same 440 // slot and fence as we just queued. 441 Mutex::Autolock lock(mMutex); 442 BufferItem item; 443 result = acquireBufferLocked(&item, 0); 444 if (result != NO_ERROR) 445 return result; 446 VDS_LOGW_IF(item.mSlot != sslot, 447 "queueBuffer: acquired sslot %d from SCRATCH after queueing sslot %d", 448 item.mSlot, sslot); 449 mFbProducerSlot = mapSource2ProducerSlot(SOURCE_SCRATCH, item.mSlot); 450 mFbFence = mSlots[item.mSlot].mFence; 451 452 } else { 453 LOG_FATAL_IF(mCompositionType != COMPOSITION_GLES, 454 "Unexpected queueBuffer in state %s for compositionType %s", 455 dbgStateStr(), dbgCompositionTypeStr(mCompositionType)); 456 457 // Extract the GLES release fence for HWC to acquire 458 int64_t timestamp; 459 bool isAutoTimestamp; 460 android_dataspace dataSpace; 461 Rect crop; 462 int scalingMode; 463 uint32_t transform; 464 input.deflate(×tamp, &isAutoTimestamp, &dataSpace, &crop, 465 &scalingMode, &transform, &mFbFence); 466 467 mFbProducerSlot = pslot; 468 mOutputFence = mFbFence; 469 } 470 471 *output = mQueueBufferOutput; 472 return NO_ERROR; 473} 474 475status_t VirtualDisplaySurface::cancelBuffer(int pslot, 476 const sp<Fence>& fence) { 477 if (mDisplayId < 0) 478 return mSource[SOURCE_SINK]->cancelBuffer(mapProducer2SourceSlot(SOURCE_SINK, pslot), fence); 479 480 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES, 481 "Unexpected cancelBuffer(pslot=%d) in %s state", pslot, 482 dbgStateStr()); 483 VDS_LOGV("cancelBuffer pslot=%d", pslot); 484 Source source = fbSourceForCompositionType(mCompositionType); 485 return mSource[source]->cancelBuffer( 486 mapProducer2SourceSlot(source, pslot), fence); 487} 488 489int VirtualDisplaySurface::query(int what, int* value) { 490 switch (what) { 491 case NATIVE_WINDOW_WIDTH: 492 *value = mSinkBufferWidth; 493 break; 494 case NATIVE_WINDOW_HEIGHT: 495 *value = mSinkBufferHeight; 496 break; 497 default: 498 return mSource[SOURCE_SINK]->query(what, value); 499 } 500 return NO_ERROR; 501} 502 503status_t VirtualDisplaySurface::connect(const sp<IProducerListener>& listener, 504 int api, bool producerControlledByApp, 505 QueueBufferOutput* output) { 506 QueueBufferOutput qbo; 507 status_t result = mSource[SOURCE_SINK]->connect(listener, api, 508 producerControlledByApp, &qbo); 509 if (result == NO_ERROR) { 510 updateQueueBufferOutput(qbo); 511 *output = mQueueBufferOutput; 512 } 513 return result; 514} 515 516status_t VirtualDisplaySurface::disconnect(int api) { 517 return mSource[SOURCE_SINK]->disconnect(api); 518} 519 520status_t VirtualDisplaySurface::setSidebandStream(const sp<NativeHandle>& /*stream*/) { 521 return INVALID_OPERATION; 522} 523 524void VirtualDisplaySurface::allocateBuffers(uint32_t /* width */, 525 uint32_t /* height */, PixelFormat /* format */, uint32_t /* usage */) { 526 // TODO: Should we actually allocate buffers for a virtual display? 527} 528 529status_t VirtualDisplaySurface::allowAllocation(bool /* allow */) { 530 return INVALID_OPERATION; 531} 532 533status_t VirtualDisplaySurface::setGenerationNumber(uint32_t /* generation */) { 534 ALOGE("setGenerationNumber not supported on VirtualDisplaySurface"); 535 return INVALID_OPERATION; 536} 537 538String8 VirtualDisplaySurface::getConsumerName() const { 539 return String8("VirtualDisplaySurface"); 540} 541 542void VirtualDisplaySurface::updateQueueBufferOutput( 543 const QueueBufferOutput& qbo) { 544 uint32_t w, h, transformHint, numPendingBuffers; 545 qbo.deflate(&w, &h, &transformHint, &numPendingBuffers); 546 mQueueBufferOutput.inflate(w, h, 0, numPendingBuffers); 547} 548 549void VirtualDisplaySurface::resetPerFrameState() { 550 mCompositionType = COMPOSITION_UNKNOWN; 551 mFbFence = Fence::NO_FENCE; 552 mOutputFence = Fence::NO_FENCE; 553 mOutputProducerSlot = -1; 554 mFbProducerSlot = -1; 555} 556 557status_t VirtualDisplaySurface::refreshOutputBuffer() { 558 if (mOutputProducerSlot >= 0) { 559 mSource[SOURCE_SINK]->cancelBuffer( 560 mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot), 561 mOutputFence); 562 } 563 564 int sslot; 565 status_t result = dequeueBuffer(SOURCE_SINK, mOutputFormat, mOutputUsage, 566 &sslot, &mOutputFence); 567 if (result < 0) 568 return result; 569 mOutputProducerSlot = mapSource2ProducerSlot(SOURCE_SINK, sslot); 570 571 // On GLES-only frames, we don't have the right output buffer acquire fence 572 // until after GLES calls queueBuffer(). So here we just set the buffer 573 // (for use in HWC prepare) but not the fence; we'll call this again with 574 // the proper fence once we have it. 575 result = mHwc.setOutputBuffer(mDisplayId, Fence::NO_FENCE, 576 mProducerBuffers[mOutputProducerSlot]); 577 578 return result; 579} 580 581// This slot mapping function is its own inverse, so two copies are unnecessary. 582// Both are kept to make the intent clear where the function is called, and for 583// the (unlikely) chance that we switch to a different mapping function. 584int VirtualDisplaySurface::mapSource2ProducerSlot(Source source, int sslot) { 585 if (source == SOURCE_SCRATCH) { 586 return BufferQueue::NUM_BUFFER_SLOTS - sslot - 1; 587 } else { 588 return sslot; 589 } 590} 591int VirtualDisplaySurface::mapProducer2SourceSlot(Source source, int pslot) { 592 return mapSource2ProducerSlot(source, pslot); 593} 594 595VirtualDisplaySurface::Source 596VirtualDisplaySurface::fbSourceForCompositionType(CompositionType type) { 597 return type == COMPOSITION_MIXED ? SOURCE_SCRATCH : SOURCE_SINK; 598} 599 600const char* VirtualDisplaySurface::dbgStateStr() const { 601 switch (mDbgState) { 602 case DBG_STATE_IDLE: return "IDLE"; 603 case DBG_STATE_PREPARED: return "PREPARED"; 604 case DBG_STATE_GLES: return "GLES"; 605 case DBG_STATE_GLES_DONE: return "GLES_DONE"; 606 case DBG_STATE_HWC: return "HWC"; 607 default: return "INVALID"; 608 } 609} 610 611const char* VirtualDisplaySurface::dbgSourceStr(Source s) { 612 switch (s) { 613 case SOURCE_SINK: return "SINK"; 614 case SOURCE_SCRATCH: return "SCRATCH"; 615 default: return "INVALID"; 616 } 617} 618 619// --------------------------------------------------------------------------- 620} // namespace android 621// --------------------------------------------------------------------------- 622