diff options
Diffstat (limited to 'services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp')
| -rw-r--r-- | services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp | 35 |
1 files changed, 23 insertions, 12 deletions
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp index d7fef8c..a1820ab 100644 --- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp +++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp @@ -56,7 +56,8 @@ VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int32_t dispId, mOutputUsage(GRALLOC_USAGE_HW_COMPOSER), mProducerSlotSource(0), mDbgState(DBG_STATE_IDLE), - mDbgLastCompositionType(COMPOSITION_UNKNOWN) + mDbgLastCompositionType(COMPOSITION_UNKNOWN), + mMustRecompose(false) { mSource[SOURCE_SINK] = sink; mSource[SOURCE_SCRATCH] = bq; @@ -92,10 +93,12 @@ VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int32_t dispId, VirtualDisplaySurface::~VirtualDisplaySurface() { } -status_t VirtualDisplaySurface::beginFrame() { +status_t VirtualDisplaySurface::beginFrame(bool mustRecompose) { if (mDisplayId < 0) return NO_ERROR; + mMustRecompose = mustRecompose; + VDS_LOGW_IF(mDbgState != DBG_STATE_IDLE, "Unexpected beginFrame() in %s state", dbgStateStr()); mDbgState = DBG_STATE_BEGUN; @@ -228,16 +231,24 @@ void VirtualDisplaySurface::onFrameCommitted() { 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); + if (mMustRecompose) { + 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); + } + } else { + // If the surface hadn't actually been updated, then we only went + // through the motions of updating the display to keep our state + // machine happy. We cancel the buffer to avoid triggering another + // re-composition and causing an infinite loop. + mSource[SOURCE_SINK]->cancelBuffer(sslot, outFence); } } |