2 * Copyright 2013 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 // #define LOG_NDEBUG 0
18 #include "VirtualDisplaySurface.h"
19 #include "HWComposer.h"
21 // ---------------------------------------------------------------------------
23 // ---------------------------------------------------------------------------
25 #define VDS_LOGE(msg, ...) ALOGE("[%s] "msg, \
26 mDisplayName.string(), ##__VA_ARGS__)
27 #define VDS_LOGW_IF(cond, msg, ...) ALOGW_IF(cond, "[%s] "msg, \
28 mDisplayName.string(), ##__VA_ARGS__)
29 #define VDS_LOGV(msg, ...) ALOGV("[%s] "msg, \
30 mDisplayName.string(), ##__VA_ARGS__)
32 static const char* dbgCompositionTypeStr(DisplaySurface::CompositionType type) {
34 case DisplaySurface::COMPOSITION_UNKNOWN: return "UNKNOWN";
35 case DisplaySurface::COMPOSITION_GLES: return "GLES";
36 case DisplaySurface::COMPOSITION_HWC: return "HWC";
37 case DisplaySurface::COMPOSITION_MIXED: return "MIXED";
38 default: return "<INVALID>";
42 VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int32_t dispId,
43 const sp<IGraphicBufferProducer>& sink,
44 const sp<BufferQueue>& bq,
50 mProducerUsage(GRALLOC_USAGE_HW_COMPOSER),
51 mProducerSlotSource(0),
52 mDbgState(DBG_STATE_IDLE),
53 mDbgLastCompositionType(COMPOSITION_UNKNOWN)
55 mSource[SOURCE_SINK] = sink;
56 mSource[SOURCE_SCRATCH] = bq;
60 int sinkWidth, sinkHeight;
61 mSource[SOURCE_SINK]->query(NATIVE_WINDOW_WIDTH, &sinkWidth);
62 mSource[SOURCE_SINK]->query(NATIVE_WINDOW_HEIGHT, &sinkHeight);
64 ConsumerBase::mName = String8::format("VDS: %s", mDisplayName.string());
65 mConsumer->setConsumerName(ConsumerBase::mName);
66 mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_COMPOSER);
67 mConsumer->setDefaultBufferSize(sinkWidth, sinkHeight);
68 mConsumer->setDefaultMaxBufferCount(2);
71 VirtualDisplaySurface::~VirtualDisplaySurface() {
74 status_t VirtualDisplaySurface::beginFrame() {
78 VDS_LOGW_IF(mDbgState != DBG_STATE_IDLE,
79 "Unexpected beginFrame() in %s state", dbgStateStr());
80 mDbgState = DBG_STATE_BEGUN;
82 uint32_t transformHint, numPendingBuffers;
83 mQueueBufferOutput.deflate(&mSinkBufferWidth, &mSinkBufferHeight,
84 &transformHint, &numPendingBuffers);
86 return refreshOutputBuffer();
89 status_t VirtualDisplaySurface::prepareFrame(CompositionType compositionType) {
93 VDS_LOGW_IF(mDbgState != DBG_STATE_BEGUN,
94 "Unexpected prepareFrame() in %s state", dbgStateStr());
95 mDbgState = DBG_STATE_PREPARED;
97 mCompositionType = compositionType;
99 if (mCompositionType != mDbgLastCompositionType) {
100 VDS_LOGV("prepareFrame: composition type changed to %s",
101 dbgCompositionTypeStr(mCompositionType));
102 mDbgLastCompositionType = mCompositionType;
108 status_t VirtualDisplaySurface::compositionComplete() {
112 status_t VirtualDisplaySurface::advanceFrame() {
116 if (mCompositionType == COMPOSITION_HWC) {
117 VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED,
118 "Unexpected advanceFrame() in %s state on HWC frame",
121 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES_DONE,
122 "Unexpected advanceFrame() in %s state on GLES/MIXED frame",
125 mDbgState = DBG_STATE_HWC;
127 if (mCompositionType == COMPOSITION_HWC) {
128 // Use the output buffer for the FB as well, though conceptually the
129 // FB is unused on this frame.
130 mFbProducerSlot = mOutputProducerSlot;
131 mFbFence = mOutputFence;
134 if (mFbProducerSlot < 0 || mOutputProducerSlot < 0) {
135 // Last chance bailout if something bad happened earlier. For example,
136 // in a GLES configuration, if the sink disappears then dequeueBuffer
137 // will fail, the GLES driver won't queue a buffer, but SurfaceFlinger
138 // will soldier on. So we end up here without a buffer. There should
139 // be lots of scary messages in the log just before this.
140 VDS_LOGE("advanceFrame: no buffer, bailing out");
144 sp<GraphicBuffer> fbBuffer = mProducerBuffers[mFbProducerSlot];
145 sp<GraphicBuffer> outBuffer = mProducerBuffers[mOutputProducerSlot];
146 VDS_LOGV("advanceFrame: fb=%d(%p) out=%d(%p)",
147 mFbProducerSlot, fbBuffer.get(),
148 mOutputProducerSlot, outBuffer.get());
150 return mHwc.fbPost(mDisplayId, mFbFence, fbBuffer);
153 void VirtualDisplaySurface::onFrameCommitted() {
157 VDS_LOGW_IF(mDbgState != DBG_STATE_HWC,
158 "Unexpected onFrameCommitted() in %s state", dbgStateStr());
159 mDbgState = DBG_STATE_IDLE;
161 sp<Fence> fbFence = mHwc.getAndResetReleaseFence(mDisplayId);
162 if (mCompositionType == COMPOSITION_MIXED && mFbProducerSlot >= 0) {
163 // release the scratch buffer back to the pool
164 Mutex::Autolock lock(mMutex);
165 int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, mFbProducerSlot);
166 VDS_LOGV("onFrameCommitted: release scratch sslot=%d", sslot);
167 addReleaseFenceLocked(sslot, mProducerBuffers[mFbProducerSlot], fbFence);
168 releaseBufferLocked(sslot, mProducerBuffers[mFbProducerSlot],
169 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
172 if (mOutputProducerSlot >= 0) {
173 int sslot = mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot);
174 QueueBufferOutput qbo;
175 sp<Fence> outFence = mHwc.getLastRetireFence(mDisplayId);
176 VDS_LOGV("onFrameCommitted: queue sink sslot=%d", sslot);
177 status_t result = mSource[SOURCE_SINK]->queueBuffer(sslot,
179 systemTime(), false /* isAutoTimestamp */,
180 Rect(mSinkBufferWidth, mSinkBufferHeight),
181 NATIVE_WINDOW_SCALING_MODE_FREEZE, 0 /* transform */,
185 if (result == NO_ERROR) {
186 updateQueueBufferOutput(qbo);
190 resetPerFrameState();
193 void VirtualDisplaySurface::dump(String8& result) const {
196 status_t VirtualDisplaySurface::requestBuffer(int pslot,
197 sp<GraphicBuffer>* outBuf) {
198 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES,
199 "Unexpected requestBuffer pslot=%d in %s state",
200 pslot, dbgStateStr());
202 *outBuf = mProducerBuffers[pslot];
206 status_t VirtualDisplaySurface::setBufferCount(int bufferCount) {
207 return mSource[SOURCE_SINK]->setBufferCount(bufferCount);
210 status_t VirtualDisplaySurface::dequeueBuffer(Source source,
211 uint32_t format, int* sslot, sp<Fence>* fence) {
212 // Don't let a slow consumer block us
213 bool async = (source == SOURCE_SINK);
215 status_t result = mSource[source]->dequeueBuffer(sslot, fence, async,
216 mSinkBufferWidth, mSinkBufferHeight, format, mProducerUsage);
219 int pslot = mapSource2ProducerSlot(source, *sslot);
220 VDS_LOGV("dequeueBuffer(%s): sslot=%d pslot=%d result=%d",
221 dbgSourceStr(source), *sslot, pslot, result);
222 uint32_t sourceBit = static_cast<uint32_t>(source) << pslot;
224 if ((mProducerSlotSource & (1u << pslot)) != sourceBit) {
225 // This slot was previously dequeued from the other source; must
226 // re-request the buffer.
227 result |= BUFFER_NEEDS_REALLOCATION;
228 mProducerSlotSource &= ~(1u << pslot);
229 mProducerSlotSource |= sourceBit;
232 if (result & RELEASE_ALL_BUFFERS) {
233 for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
234 if ((mProducerSlotSource & (1u << i)) == sourceBit)
235 mProducerBuffers[i].clear();
238 if (result & BUFFER_NEEDS_REALLOCATION) {
239 mSource[source]->requestBuffer(*sslot, &mProducerBuffers[pslot]);
240 VDS_LOGV("dequeueBuffer(%s): buffers[%d]=%p",
241 dbgSourceStr(source), pslot, mProducerBuffers[pslot].get());
247 status_t VirtualDisplaySurface::dequeueBuffer(int* pslot, sp<Fence>* fence, bool async,
248 uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
249 VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED,
250 "Unexpected dequeueBuffer() in %s state", dbgStateStr());
251 mDbgState = DBG_STATE_GLES;
253 VDS_LOGW_IF(!async, "EGL called dequeueBuffer with !async despite eglSwapInterval(0)");
254 VDS_LOGV("dequeueBuffer %dx%d fmt=%d usage=%#x", w, h, format, usage);
256 status_t result = NO_ERROR;
257 mProducerUsage = usage | GRALLOC_USAGE_HW_COMPOSER;
258 Source source = fbSourceForCompositionType(mCompositionType);
260 if (source == SOURCE_SINK) {
262 if (mOutputProducerSlot < 0) {
263 // Last chance bailout if something bad happened earlier. For example,
264 // in a GLES configuration, if the sink disappears then dequeueBuffer
265 // will fail, the GLES driver won't queue a buffer, but SurfaceFlinger
266 // will soldier on. So we end up here without a buffer. There should
267 // be lots of scary messages in the log just before this.
268 VDS_LOGE("dequeueBuffer: no buffer, bailing out");
272 // We already dequeued the output buffer. If the GLES driver wants
273 // something incompatible, we have to cancel and get a new one. This
274 // will mean that HWC will see a different output buffer between
275 // prepare and set, but since we're in GLES-only mode already it
278 const sp<GraphicBuffer>& buf = mProducerBuffers[mOutputProducerSlot];
279 if ((mProducerUsage & ~buf->getUsage()) != 0 ||
280 (format != 0 && format != (uint32_t)buf->getPixelFormat()) ||
281 (w != 0 && w != mSinkBufferWidth) ||
282 (h != 0 && h != mSinkBufferHeight)) {
283 VDS_LOGV("dequeueBuffer: output buffer doesn't satisfy GLES "
284 "request, getting a new buffer");
285 result = refreshOutputBuffer();
291 if (source == SOURCE_SINK) {
292 *pslot = mOutputProducerSlot;
293 *fence = mOutputFence;
296 result = dequeueBuffer(source, format, &sslot, fence);
298 *pslot = mapSource2ProducerSlot(source, sslot);
304 status_t VirtualDisplaySurface::queueBuffer(int pslot,
305 const QueueBufferInput& input, QueueBufferOutput* output) {
306 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES,
307 "Unexpected queueBuffer(pslot=%d) in %s state", pslot,
309 mDbgState = DBG_STATE_GLES_DONE;
311 VDS_LOGV("queueBuffer pslot=%d", pslot);
314 if (mCompositionType == COMPOSITION_MIXED) {
315 // Queue the buffer back into the scratch pool
316 QueueBufferOutput scratchQBO;
317 int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, pslot);
318 result = mSource[SOURCE_SCRATCH]->queueBuffer(sslot, input, &scratchQBO);
319 if (result != NO_ERROR)
322 // Now acquire the buffer from the scratch pool -- should be the same
323 // slot and fence as we just queued.
324 Mutex::Autolock lock(mMutex);
325 BufferQueue::BufferItem item;
326 result = acquireBufferLocked(&item, 0);
327 if (result != NO_ERROR)
329 VDS_LOGW_IF(item.mBuf != sslot,
330 "queueBuffer: acquired sslot %d from SCRATCH after queueing sslot %d",
332 mFbProducerSlot = mapSource2ProducerSlot(SOURCE_SCRATCH, item.mBuf);
333 mFbFence = mSlots[item.mBuf].mFence;
336 LOG_FATAL_IF(mCompositionType != COMPOSITION_GLES,
337 "Unexpected queueBuffer in state %s for compositionType %s",
338 dbgStateStr(), dbgCompositionTypeStr(mCompositionType));
340 // Extract the GLES release fence for HWC to acquire
342 bool isAutoTimestamp;
347 input.deflate(×tamp, &isAutoTimestamp, &crop, &scalingMode,
348 &transform, &async, &mFbFence);
350 mFbProducerSlot = pslot;
351 mOutputFence = mFbFence;
354 *output = mQueueBufferOutput;
358 void VirtualDisplaySurface::cancelBuffer(int pslot, const sp<Fence>& fence) {
359 VDS_LOGW_IF(mDbgState != DBG_STATE_GLES,
360 "Unexpected cancelBuffer(pslot=%d) in %s state", pslot,
362 VDS_LOGV("cancelBuffer pslot=%d", pslot);
363 Source source = fbSourceForCompositionType(mCompositionType);
364 return mSource[source]->cancelBuffer(
365 mapProducer2SourceSlot(source, pslot), fence);
368 int VirtualDisplaySurface::query(int what, int* value) {
369 return mSource[SOURCE_SINK]->query(what, value);
372 status_t VirtualDisplaySurface::connect(const sp<IBinder>& token,
373 int api, bool producerControlledByApp,
374 QueueBufferOutput* output) {
375 QueueBufferOutput qbo;
376 status_t result = mSource[SOURCE_SINK]->connect(token, api, producerControlledByApp, &qbo);
377 if (result == NO_ERROR) {
378 updateQueueBufferOutput(qbo);
379 *output = mQueueBufferOutput;
384 status_t VirtualDisplaySurface::disconnect(int api) {
385 return mSource[SOURCE_SINK]->disconnect(api);
388 void VirtualDisplaySurface::updateQueueBufferOutput(
389 const QueueBufferOutput& qbo) {
390 uint32_t w, h, transformHint, numPendingBuffers;
391 qbo.deflate(&w, &h, &transformHint, &numPendingBuffers);
392 mQueueBufferOutput.inflate(w, h, 0, numPendingBuffers);
395 void VirtualDisplaySurface::resetPerFrameState() {
396 mCompositionType = COMPOSITION_UNKNOWN;
397 mSinkBufferWidth = 0;
398 mSinkBufferHeight = 0;
399 mFbFence = Fence::NO_FENCE;
400 mOutputFence = Fence::NO_FENCE;
401 mFbProducerSlot = -1;
402 mOutputProducerSlot = -1;
405 status_t VirtualDisplaySurface::refreshOutputBuffer() {
406 if (mOutputProducerSlot >= 0) {
407 mSource[SOURCE_SINK]->cancelBuffer(
408 mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot),
413 status_t result = dequeueBuffer(SOURCE_SINK, 0, &sslot, &mOutputFence);
416 mOutputProducerSlot = mapSource2ProducerSlot(SOURCE_SINK, sslot);
418 result = mHwc.setOutputBuffer(mDisplayId, mOutputFence,
419 mProducerBuffers[mOutputProducerSlot]);
424 // This slot mapping function is its own inverse, so two copies are unnecessary.
425 // Both are kept to make the intent clear where the function is called, and for
426 // the (unlikely) chance that we switch to a different mapping function.
427 int VirtualDisplaySurface::mapSource2ProducerSlot(Source source, int sslot) {
428 if (source == SOURCE_SCRATCH) {
429 return BufferQueue::NUM_BUFFER_SLOTS - sslot - 1;
434 int VirtualDisplaySurface::mapProducer2SourceSlot(Source source, int pslot) {
435 return mapSource2ProducerSlot(source, pslot);
438 VirtualDisplaySurface::Source
439 VirtualDisplaySurface::fbSourceForCompositionType(CompositionType type) {
440 return type == COMPOSITION_MIXED ? SOURCE_SCRATCH : SOURCE_SINK;
443 const char* VirtualDisplaySurface::dbgStateStr() const {
445 case DBG_STATE_IDLE: return "IDLE";
446 case DBG_STATE_PREPARED: return "PREPARED";
447 case DBG_STATE_GLES: return "GLES";
448 case DBG_STATE_GLES_DONE: return "GLES_DONE";
449 case DBG_STATE_HWC: return "HWC";
450 default: return "INVALID";
454 const char* VirtualDisplaySurface::dbgSourceStr(Source s) {
456 case SOURCE_SINK: return "SINK";
457 case SOURCE_SCRATCH: return "SCRATCH";
458 default: return "INVALID";
462 // ---------------------------------------------------------------------------
463 } // namespace android
464 // ---------------------------------------------------------------------------