* limitations under the License.
*/
+// #define LOG_NDEBUG 0
#include "VirtualDisplaySurface.h"
#include "HWComposer.h"
namespace android {
// ---------------------------------------------------------------------------
-VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int disp,
- const sp<IGraphicBufferProducer>& sink, const String8& name)
-: mHwc(hwc),
- mDisplayId(disp),
- mSource(new BufferQueueInterposer(sink, name)),
- mName(name)
-{}
+#define VDS_LOGE(msg, ...) ALOGE("[%s] "msg, \
+ mDisplayName.string(), ##__VA_ARGS__)
+#define VDS_LOGW_IF(cond, msg, ...) ALOGW_IF(cond, "[%s] "msg, \
+ mDisplayName.string(), ##__VA_ARGS__)
+#define VDS_LOGV(msg, ...) ALOGV("[%s] "msg, \
+ mDisplayName.string(), ##__VA_ARGS__)
-VirtualDisplaySurface::~VirtualDisplaySurface() {
- if (mAcquiredBuffer != NULL) {
- status_t result = mSource->releaseBuffer(Fence::NO_FENCE);
- ALOGE_IF(result != NO_ERROR, "VirtualDisplaySurface \"%s\": "
- "failed to release buffer: %d", mName.string(), result);
+static const char* dbgCompositionTypeStr(DisplaySurface::CompositionType type) {
+ switch (type) {
+ case DisplaySurface::COMPOSITION_UNKNOWN: return "UNKNOWN";
+ case DisplaySurface::COMPOSITION_GLES: return "GLES";
+ case DisplaySurface::COMPOSITION_HWC: return "HWC";
+ case DisplaySurface::COMPOSITION_MIXED: return "MIXED";
+ default: return "<INVALID>";
}
}
-sp<IGraphicBufferProducer> VirtualDisplaySurface::getIGraphicBufferProducer() const {
- return mSource;
+VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int32_t dispId,
+ const sp<IGraphicBufferProducer>& sink,
+ const sp<BufferQueue>& bq,
+ const String8& name)
+: ConsumerBase(bq),
+ mHwc(hwc),
+ mDisplayId(dispId),
+ mDisplayName(name),
+ mProducerUsage(GRALLOC_USAGE_HW_COMPOSER),
+ mProducerSlotSource(0),
+ mDbgState(DBG_STATE_IDLE),
+ mDbgLastCompositionType(COMPOSITION_UNKNOWN)
+{
+ mSource[SOURCE_SINK] = sink;
+ mSource[SOURCE_SCRATCH] = bq;
+
+ resetPerFrameState();
+
+ int sinkWidth, sinkHeight;
+ mSource[SOURCE_SINK]->query(NATIVE_WINDOW_WIDTH, &sinkWidth);
+ mSource[SOURCE_SINK]->query(NATIVE_WINDOW_HEIGHT, &sinkHeight);
+
+ ConsumerBase::mName = String8::format("VDS: %s", mDisplayName.string());
+ mConsumer->setConsumerName(ConsumerBase::mName);
+ mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_COMPOSER);
+ mConsumer->setDefaultBufferSize(sinkWidth, sinkHeight);
+ mConsumer->setDefaultMaxBufferCount(2);
+}
+
+VirtualDisplaySurface::~VirtualDisplaySurface() {
+}
+
+status_t VirtualDisplaySurface::beginFrame() {
+ if (mDisplayId < 0)
+ return NO_ERROR;
+
+ VDS_LOGW_IF(mDbgState != DBG_STATE_IDLE,
+ "Unexpected beginFrame() in %s state", dbgStateStr());
+ mDbgState = DBG_STATE_BEGUN;
+
+ uint32_t transformHint, numPendingBuffers;
+ mQueueBufferOutput.deflate(&mSinkBufferWidth, &mSinkBufferHeight,
+ &transformHint, &numPendingBuffers);
+
+ return refreshOutputBuffer();
+}
+
+status_t VirtualDisplaySurface::prepareFrame(CompositionType compositionType) {
+ if (mDisplayId < 0)
+ return NO_ERROR;
+
+ VDS_LOGW_IF(mDbgState != DBG_STATE_BEGUN,
+ "Unexpected prepareFrame() in %s state", dbgStateStr());
+ mDbgState = DBG_STATE_PREPARED;
+
+ mCompositionType = compositionType;
+
+ if (mCompositionType != mDbgLastCompositionType) {
+ VDS_LOGV("prepareFrame: composition type changed to %s",
+ dbgCompositionTypeStr(mCompositionType));
+ mDbgLastCompositionType = mCompositionType;
+ }
+
+ return NO_ERROR;
}
status_t VirtualDisplaySurface::compositionComplete() {
}
status_t VirtualDisplaySurface::advanceFrame() {
- Mutex::Autolock lock(mMutex);
+ if (mDisplayId < 0)
+ return NO_ERROR;
+
+ if (mCompositionType == COMPOSITION_HWC) {
+ VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED,
+ "Unexpected advanceFrame() in %s state on HWC frame",
+ dbgStateStr());
+ } else {
+ VDS_LOGW_IF(mDbgState != DBG_STATE_GLES_DONE,
+ "Unexpected advanceFrame() in %s state on GLES/MIXED frame",
+ dbgStateStr());
+ }
+ mDbgState = DBG_STATE_HWC;
+
+ if (mCompositionType == COMPOSITION_HWC) {
+ // Use the output buffer for the FB as well, though conceptually the
+ // FB is unused on this frame.
+ mFbProducerSlot = mOutputProducerSlot;
+ mFbFence = mOutputFence;
+ }
+
+ if (mFbProducerSlot < 0 || 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("advanceFrame: no buffer, bailing out");
+ return NO_MEMORY;
+ }
+
+ sp<GraphicBuffer> fbBuffer = mProducerBuffers[mFbProducerSlot];
+ sp<GraphicBuffer> outBuffer = mProducerBuffers[mOutputProducerSlot];
+ VDS_LOGV("advanceFrame: fb=%d(%p) out=%d(%p)",
+ mFbProducerSlot, fbBuffer.get(),
+ mOutputProducerSlot, outBuffer.get());
+
+ return mHwc.fbPost(mDisplayId, mFbFence, fbBuffer);
+}
+
+void VirtualDisplaySurface::onFrameCommitted() {
+ if (mDisplayId < 0)
+ return;
+
+ VDS_LOGW_IF(mDbgState != DBG_STATE_HWC,
+ "Unexpected onFrameCommitted() in %s state", dbgStateStr());
+ mDbgState = DBG_STATE_IDLE;
+
+ sp<Fence> fbFence = mHwc.getAndResetReleaseFence(mDisplayId);
+ if (mCompositionType == COMPOSITION_MIXED && mFbProducerSlot >= 0) {
+ // release the scratch buffer back to the pool
+ Mutex::Autolock lock(mMutex);
+ int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, mFbProducerSlot);
+ VDS_LOGV("onFrameCommitted: release scratch sslot=%d", sslot);
+ addReleaseFenceLocked(sslot, mProducerBuffers[mFbProducerSlot], fbFence);
+ releaseBufferLocked(sslot, mProducerBuffers[mFbProducerSlot],
+ EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
+ }
+
+ if (mOutputProducerSlot >= 0) {
+ int sslot = mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot);
+ QueueBufferOutput qbo;
+ sp<Fence> outFence = mHwc.getLastRetireFence(mDisplayId);
+ VDS_LOGV("onFrameCommitted: queue sink sslot=%d", sslot);
+ status_t result = mSource[SOURCE_SINK]->queueBuffer(sslot,
+ QueueBufferInput(
+ systemTime(), false /* isAutoTimestamp */,
+ Rect(mSinkBufferWidth, mSinkBufferHeight),
+ NATIVE_WINDOW_SCALING_MODE_FREEZE, 0 /* transform */,
+ true /* async*/,
+ outFence),
+ &qbo);
+ if (result == NO_ERROR) {
+ updateQueueBufferOutput(qbo);
+ }
+ }
+
+ resetPerFrameState();
+}
+
+void VirtualDisplaySurface::dump(String8& result) const {
+}
+
+status_t VirtualDisplaySurface::requestBuffer(int pslot,
+ sp<GraphicBuffer>* outBuf) {
+ VDS_LOGW_IF(mDbgState != DBG_STATE_GLES,
+ "Unexpected requestBuffer pslot=%d in %s state",
+ pslot, dbgStateStr());
+
+ *outBuf = mProducerBuffers[pslot];
+ return NO_ERROR;
+}
+
+status_t VirtualDisplaySurface::setBufferCount(int bufferCount) {
+ return mSource[SOURCE_SINK]->setBufferCount(bufferCount);
+}
+
+status_t VirtualDisplaySurface::dequeueBuffer(Source source,
+ uint32_t format, int* sslot, sp<Fence>* fence) {
+ // 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, mProducerUsage);
+ 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);
+ uint32_t sourceBit = static_cast<uint32_t>(source) << pslot;
+
+ if ((mProducerSlotSource & (1u << pslot)) != sourceBit) {
+ // This slot was previously dequeued from the other source; must
+ // re-request the buffer.
+ result |= BUFFER_NEEDS_REALLOCATION;
+ mProducerSlotSource &= ~(1u << pslot);
+ mProducerSlotSource |= sourceBit;
+ }
+
+ if (result & RELEASE_ALL_BUFFERS) {
+ for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
+ if ((mProducerSlotSource & (1u << i)) == sourceBit)
+ mProducerBuffers[i].clear();
+ }
+ }
+ if (result & BUFFER_NEEDS_REALLOCATION) {
+ mSource[source]->requestBuffer(*sslot, &mProducerBuffers[pslot]);
+ VDS_LOGV("dequeueBuffer(%s): buffers[%d]=%p",
+ dbgSourceStr(source), pslot, mProducerBuffers[pslot].get());
+ }
+
+ return result;
+}
+
+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;
+ mProducerUsage = usage | GRALLOC_USAGE_HW_COMPOSER;
+ Source source = fbSourceForCompositionType(mCompositionType);
+
+ if (source == SOURCE_SINK) {
+ // 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.
- if (mAcquiredBuffer != NULL) {
- ALOGE("VirtualDisplaySurface \"%s\": "
- "advanceFrame called twice without onFrameCommitted",
- mName.string());
- return INVALID_OPERATION;
+ const sp<GraphicBuffer>& buf = mProducerBuffers[mOutputProducerSlot];
+ if ((mProducerUsage & ~buf->getUsage()) != 0 ||
+ (format != 0 && format != (uint32_t)buf->getPixelFormat()) ||
+ (w != 0 && w != mSinkBufferWidth) ||
+ (h != 0 && h != mSinkBufferHeight)) {
+ VDS_LOGV("dequeueBuffer: output buffer doesn't satisfy GLES "
+ "request, getting a new buffer");
+ result = refreshOutputBuffer();
+ if (result < 0)
+ return result;
+ }
}
- sp<Fence> fence;
- result = mSource->acquireBuffer(&mAcquiredBuffer, &fence);
- if (result == BufferQueueInterposer::NO_BUFFER_AVAILABLE) {
- result = mSource->pullEmptyBuffer();
+ if (source == SOURCE_SINK) {
+ *pslot = mOutputProducerSlot;
+ *fence = mOutputFence;
+ } else {
+ int sslot;
+ result = dequeueBuffer(source, format, &sslot, fence);
+ if (result >= 0) {
+ *pslot = mapSource2ProducerSlot(source, sslot);
+ }
+ }
+ return result;
+}
+
+status_t VirtualDisplaySurface::queueBuffer(int pslot,
+ const QueueBufferInput& input, QueueBufferOutput* 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);
+ BufferQueue::BufferItem item;
+ result = acquireBufferLocked(&item, 0);
if (result != NO_ERROR)
return result;
- result = mSource->acquireBuffer(&mAcquiredBuffer, &fence);
+ 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;
+ Rect crop;
+ int scalingMode;
+ uint32_t transform;
+ bool async;
+ input.deflate(×tamp, &isAutoTimestamp, &crop, &scalingMode,
+ &transform, &async, &mFbFence);
+
+ mFbProducerSlot = pslot;
+ mOutputFence = mFbFence;
}
- if (result != NO_ERROR)
+
+ *output = mQueueBufferOutput;
+ return NO_ERROR;
+}
+
+void VirtualDisplaySurface::cancelBuffer(int pslot, const sp<Fence>& fence) {
+ VDS_LOGW_IF(mDbgState != DBG_STATE_GLES,
+ "Unexpected cancelBuffer(pslot=%d) in %s state", pslot,
+ dbgStateStr());
+ VDS_LOGV("cancelBuffer pslot=%d", pslot);
+ Source source = fbSourceForCompositionType(mCompositionType);
+ return mSource[source]->cancelBuffer(
+ mapProducer2SourceSlot(source, pslot), fence);
+}
+
+int VirtualDisplaySurface::query(int what, int* value) {
+ return mSource[SOURCE_SINK]->query(what, value);
+}
+
+status_t VirtualDisplaySurface::connect(const sp<IBinder>& token,
+ int api, bool producerControlledByApp,
+ QueueBufferOutput* output) {
+ QueueBufferOutput qbo;
+ status_t result = mSource[SOURCE_SINK]->connect(token, api, producerControlledByApp, &qbo);
+ if (result == NO_ERROR) {
+ updateQueueBufferOutput(qbo);
+ *output = mQueueBufferOutput;
+ }
+ return result;
+}
+
+status_t VirtualDisplaySurface::disconnect(int api) {
+ return mSource[SOURCE_SINK]->disconnect(api);
+}
+
+void VirtualDisplaySurface::updateQueueBufferOutput(
+ const QueueBufferOutput& qbo) {
+ uint32_t w, h, transformHint, numPendingBuffers;
+ qbo.deflate(&w, &h, &transformHint, &numPendingBuffers);
+ mQueueBufferOutput.inflate(w, h, 0, numPendingBuffers);
+}
+
+void VirtualDisplaySurface::resetPerFrameState() {
+ mCompositionType = COMPOSITION_UNKNOWN;
+ mSinkBufferWidth = 0;
+ mSinkBufferHeight = 0;
+ mFbFence = Fence::NO_FENCE;
+ mOutputFence = Fence::NO_FENCE;
+ mFbProducerSlot = -1;
+ mOutputProducerSlot = -1;
+}
+
+status_t VirtualDisplaySurface::refreshOutputBuffer() {
+ if (mOutputProducerSlot >= 0) {
+ mSource[SOURCE_SINK]->cancelBuffer(
+ mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot),
+ mOutputFence);
+ }
+
+ int sslot;
+ status_t result = dequeueBuffer(SOURCE_SINK, 0, &sslot, &mOutputFence);
+ if (result < 0)
return result;
+ mOutputProducerSlot = mapSource2ProducerSlot(SOURCE_SINK, sslot);
- return mHwc.fbPost(mDisplayId, fence, mAcquiredBuffer);
+ result = mHwc.setOutputBuffer(mDisplayId, mOutputFence,
+ mProducerBuffers[mOutputProducerSlot]);
+
+ return result;
}
-void VirtualDisplaySurface::onFrameCommitted(const sp<Fence>& fence) {
- Mutex::Autolock lock(mMutex);
- if (mAcquiredBuffer != NULL) {
- status_t result = mSource->releaseBuffer(fence);
- ALOGE_IF(result != NO_ERROR, "VirtualDisplaySurface \"%s\": "
- "failed to release buffer: %d", mName.string(), result);
- mAcquiredBuffer.clear();
+// This slot mapping function is its own inverse, so two copies are unnecessary.
+// Both are kept to make the intent clear where the function is called, and for
+// the (unlikely) chance that we switch to a different mapping function.
+int VirtualDisplaySurface::mapSource2ProducerSlot(Source source, int sslot) {
+ if (source == SOURCE_SCRATCH) {
+ return BufferQueue::NUM_BUFFER_SLOTS - sslot - 1;
+ } else {
+ return sslot;
}
}
+int VirtualDisplaySurface::mapProducer2SourceSlot(Source source, int pslot) {
+ return mapSource2ProducerSlot(source, pslot);
+}
-void VirtualDisplaySurface::dump(String8& result) const {
+VirtualDisplaySurface::Source
+VirtualDisplaySurface::fbSourceForCompositionType(CompositionType type) {
+ return type == COMPOSITION_MIXED ? SOURCE_SCRATCH : SOURCE_SINK;
+}
+
+const char* VirtualDisplaySurface::dbgStateStr() const {
+ switch (mDbgState) {
+ case DBG_STATE_IDLE: return "IDLE";
+ case DBG_STATE_PREPARED: return "PREPARED";
+ case DBG_STATE_GLES: return "GLES";
+ case DBG_STATE_GLES_DONE: return "GLES_DONE";
+ case DBG_STATE_HWC: return "HWC";
+ default: return "INVALID";
+ }
+}
+
+const char* VirtualDisplaySurface::dbgSourceStr(Source s) {
+ switch (s) {
+ case SOURCE_SINK: return "SINK";
+ case SOURCE_SCRATCH: return "SCRATCH";
+ default: return "INVALID";
+ }
}
// ---------------------------------------------------------------------------
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