status_t VirtualDisplaySurface::queueBuffer(int pslot,
const QueueBufferInput& input, QueueBufferOutput* output) {
if (mDisplayId < 0)
return mSource[SOURCE_SINK]->queueBuffer(pslot, input, output);
VDS_LOGW_IF(mDbgState != DBG_STATE_GLES,
"Unexpected queueBuffer(pslot=%d) in %s state", pslot,
dbgStateStr());
mDbgState = DBG_STATE_GLES_DONE;
VDS_LOGV("queueBuffer pslot=%d", pslot);
status_t result;
if (mCompositionType == COMPOSITION_MIXED) {
// Queue the buffer back into the scratch pool
QueueBufferOutput scratchQBO;
int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, pslot);
result = mSource[SOURCE_SCRATCH]->queueBuffer(sslot, input, &scratchQBO);
if (result != NO_ERROR)
return result;
// Now acquire the buffer from the scratch pool -- should be the same
// slot and fence as we just queued.
Mutex::Autolock lock(mMutex);
BufferItem item;
result = acquireBufferLocked(&item, 0);
if (result != NO_ERROR)
return result;
VDS_LOGW_IF(item.mBuf != sslot,
"queueBuffer: acquired sslot %d from SCRATCH after queueing sslot %d",
item.mBuf, sslot);
mFbProducerSlot = mapSource2ProducerSlot(SOURCE_SCRATCH, item.mBuf);
mFbFence = mSlots[item.mBuf].mFence;
} else {
LOG_FATAL_IF(mCompositionType != COMPOSITION_GLES,
"Unexpected queueBuffer in state %s for compositionType %s",
dbgStateStr(), dbgCompositionTypeStr(mCompositionType));
// Extract the GLES release fence for HWC to acquire
int64_t timestamp;
bool isAutoTimestamp;
android_dataspace dataSpace;
Rect crop;
int scalingMode;
uint32_t transform;
bool async;
input.deflate(×tamp, &isAutoTimestamp, &dataSpace, &crop,
&scalingMode, &transform, &async, &mFbFence);
mFbProducerSlot = pslot;
mOutputFence = mFbFence;
}
*output = mQueueBufferOutput;
return NO_ERROR;
}
status_t VirtualDisplaySurface::dequeueBuffer(Source source,
uint32_t format, uint32_t usage, int* sslot, sp<Fence>* fence) {
LOG_FATAL_IF(mDisplayId < 0, "mDisplayId=%d but should not be < 0.", mDisplayId);
// Don't let a slow consumer block us
bool async = (source == SOURCE_SINK);
status_t result = mSource[source]->dequeueBuffer(sslot, fence, async,
mSinkBufferWidth, mSinkBufferHeight, format, usage);
if (result < 0)
return result;
int pslot = mapSource2ProducerSlot(source, *sslot);
VDS_LOGV("dequeueBuffer(%s): sslot=%d pslot=%d result=%d",
dbgSourceStr(source), *sslot, pslot, result);
uint64_t sourceBit = static_cast<uint64_t>(source) << pslot;
if ((mProducerSlotSource & (1ULL << pslot)) != sourceBit) {
// This slot was previously dequeued from the other source; must
// re-request the buffer.
result |= BUFFER_NEEDS_REALLOCATION;
mProducerSlotSource &= ~(1ULL << pslot);
mProducerSlotSource |= sourceBit;
}
if (result & RELEASE_ALL_BUFFERS) {
for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
if ((mProducerSlotSource & (1ULL << i)) == sourceBit)
mProducerBuffers[i].clear();
}
}
if (result & BUFFER_NEEDS_REALLOCATION) {
result = mSource[source]->requestBuffer(*sslot, &mProducerBuffers[pslot]);
if (result < 0) {
mProducerBuffers[pslot].clear();
mSource[source]->cancelBuffer(*sslot, *fence);
return result;
}
VDS_LOGV("dequeueBuffer(%s): buffers[%d]=%p fmt=%d usage=%#x",
dbgSourceStr(source), pslot, mProducerBuffers[pslot].get(),
mProducerBuffers[pslot]->getPixelFormat(),
mProducerBuffers[pslot]->getUsage());
}
return result;
}
status_t VirtualDisplaySurface::refreshOutputBuffer() {
if (mOutputProducerSlot >= 0) {
mSource[SOURCE_SINK]->cancelBuffer(
mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot),
mOutputFence);
}
int sslot;
status_t result = dequeueBuffer(SOURCE_SINK, mOutputFormat, mOutputUsage,
&sslot, &mOutputFence);
if (result < 0)
return result;
mOutputProducerSlot = mapSource2ProducerSlot(SOURCE_SINK, sslot);
// On GLES-only frames, we don't have the right output buffer acquire fence
// until after GLES calls queueBuffer(). So here we just set the buffer
// (for use in HWC prepare) but not the fence; we'll call this again with
// the proper fence once we have it.
result = mHwc.setOutputBuffer(mDisplayId, Fence::NO_FENCE,
mProducerBuffers[mOutputProducerSlot]);
return result;
}
int VirtualDisplaySurface::mapProducer2SourceSlot(Source source, int pslot) {
return mapSource2ProducerSlot(source, pslot);
}
status_t VirtualDisplaySurface::dequeueBuffer(int* pslot, sp<Fence>* fence, bool async,
uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED,
"Unexpected dequeueBuffer() in %s state", dbgStateStr());
mDbgState = DBG_STATE_GLES;
VDS_LOGW_IF(!async, "EGL called dequeueBuffer with !async despite eglSwapInterval(0)");
VDS_LOGV("dequeueBuffer %dx%d fmt=%d usage=%#x", w, h, format, usage);
status_t result = NO_ERROR;
Source source = fbSourceForCompositionType(mCompositionType);
if (source == SOURCE_SINK) {
if (mOutputProducerSlot < 0) {
// Last chance bailout if something bad happened earlier. For example,
// in a GLES configuration, if the sink disappears then dequeueBuffer
// will fail, the GLES driver won't queue a buffer, but SurfaceFlinger
// will soldier on. So we end up here without a buffer. There should
// be lots of scary messages in the log just before this.
VDS_LOGE("dequeueBuffer: no buffer, bailing out");
return NO_MEMORY;
}
// We already dequeued the output buffer. If the GLES driver wants
// something incompatible, we have to cancel and get a new one. This
// will mean that HWC will see a different output buffer between
// prepare and set, but since we're in GLES-only mode already it
// shouldn't matter.
usage |= GRALLOC_USAGE_HW_COMPOSER;
const sp<GraphicBuffer>& buf = mProducerBuffers[mOutputProducerSlot];
if ((usage & ~buf->getUsage()) != 0 ||
(format != 0 && format != (uint32_t)buf->getPixelFormat()) ||
(w != 0 && w != mSinkBufferWidth) ||
(h != 0 && h != mSinkBufferHeight)) {
VDS_LOGV("dequeueBuffer: dequeueing new output buffer: "
"want %dx%d fmt=%d use=%#x, "
"have %dx%d fmt=%d use=%#x",
w, h, format, usage,
mSinkBufferWidth, mSinkBufferHeight,
buf->getPixelFormat(), buf->getUsage());
mOutputFormat = format;
mOutputUsage = usage;
result = refreshOutputBuffer();
if (result < 0)
return result;
}
}
if (source == SOURCE_SINK) {
*pslot = mOutputProducerSlot;
*fence = mOutputFence;
} else {
int sslot;
result = dequeueBuffer(source, format, usage, &sslot, fence);
if (result >= 0) {
*pslot = mapSource2ProducerSlot(source, sslot);
}
}
return result;
}
