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sf: vds: Avoid HWC for certain scenarios

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Reserve HWC for VDS for WFD use case. During WFD usecase, sink usage
will contain GRALLOC_USAGE_PRIVATE_WFD flag.

When HWC is avoided, all virtual displays are composed using GLES.
This means that GLES composes directly into the sink buffer and
signals the consumer. Furthermore, it is expected that any color
conversion will be handled on the consumer side.

CRs-Fixed: 908380
Change-Id: I93ff54c79ece788b6caf3f4172835d8ac1362f62
This commit is contained in:
Manoj Kumar AVM 2015-10-02 14:53:50 -07:00 committed by Gerrit - the friendly Code Review server
parent 81c57b3149
commit f8ea9b5796
3 changed files with 28 additions and 3 deletions
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15
services/surfaceflinger/DisplayUtils.cpp
View File

@ -44,6 +44,9 @@
#include <DisplayHardware/ExHWComposer.h>
#include <DisplayHardware/ExVirtualDisplaySurface.h>
#include <dlfcn.h>
#if QTI_BSP
#include <gralloc_priv.h>
#endif
namespace android {
@ -157,5 +160,17 @@ bool DisplayUtils::createV4L2BasedVirtualDisplay(HWComposer* hwc, int32_t &hwcDi
return false;
}
bool DisplayUtils::canAllocateHwcDisplayIdForVDS(int usage) {
// on AOSP builds with QTI_BSP disabled, we should allocate hwc display id for virtual display
int flag_mask = 0xffffffff;
#if QTI_BSP
// Reserve hardware acceleration for WFD use-case
flag_mask = GRALLOC_USAGE_PRIVATE_WFD;
#endif
return (usage & flag_mask);
}
}; // namespace android

1
services/surfaceflinger/DisplayUtils.h
View File

@ -61,6 +61,7 @@ class DisplayUtils {
sp<IGraphicBufferProducer> &producer, sp<IGraphicBufferProducer> bqProducer,
sp<IGraphicBufferConsumer> bqConsumer, String8 currentStateDisplayName,
bool currentStateIsSecure, int currentStateType);
bool canAllocateHwcDisplayIdForVDS(int usage);
DisplayUtils();
private:
static DisplayUtils* sDisplayUtils;

15
services/surfaceflinger/SurfaceFlinger.cpp
View File

@ -1430,6 +1430,7 @@ void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags)
if (state.surface != NULL) {
int width = 0;
DisplayUtils* displayUtils = DisplayUtils::getInstance();
int status = state.surface->query(
NATIVE_WINDOW_WIDTH, &width);
ALOGE_IF(status != NO_ERROR,
@ -1442,11 +1443,19 @@ void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags)
if (MAX_VIRTUAL_DISPLAY_DIMENSION == 0 ||
(width <= MAX_VIRTUAL_DISPLAY_DIMENSION &&
height <= MAX_VIRTUAL_DISPLAY_DIMENSION)) {
hwcDisplayId = allocateHwcDisplayId(state.type);
int usage = 0;
status = state.surface->query(
NATIVE_WINDOW_CONSUMER_USAGE_BITS, &usage);
ALOGW_IF(status != NO_ERROR,
"Unable to query usage (%d)", status);
if ( (status == NO_ERROR) &&
displayUtils->canAllocateHwcDisplayIdForVDS(usage)) {
hwcDisplayId = allocateHwcDisplayId(state.type);
}
}
DisplayUtils::getInstance()->initVDSInstance(mHwc, hwcDisplayId,
state.surface, dispSurface, producer, bqProducer, bqConsumer,
displayUtils->initVDSInstance(mHwc, hwcDisplayId, state.surface,
dispSurface, producer, bqProducer, bqConsumer,
state.displayName, state.isSecure, state.type);
}