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am a54a8b63: am 93fcb823: Merge "Add a boardconfig to force HWC composition of virtual displays" into klp-dev 

* commit 'a54a8b63d191d2c1c4669f89b32c4b8a9c04cd31':
  Add a boardconfig to force HWC composition of virtual displays
This commit is contained in:
Jesse Hall 2013-10-23 15:20:43 -07:00 committed by Android Git Automerger
parent 014dd9f0f2 a54a8b63d1
commit 6fdaaf5c7c
2 changed files with 20 additions and 0 deletions
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6
services/surfaceflinger/Android.mk
View File

@ -51,6 +51,12 @@ ifeq ($(TARGET_DISABLE_TRIPLE_BUFFERING),true)
LOCAL_CFLAGS += -DTARGET_DISABLE_TRIPLE_BUFFERING
endif
ifneq ($(TARGET_FORCE_HWC_FOR_VIRTUAL_DISPLAYS),)
LOCAL_CFLAGS += -DFORCE_HWC_COPY_FOR_VIRTUAL_DISPLAYS=false
else
LOCAL_CFLAGS += -DFORCE_HWC_COPY_FOR_VIRTUAL_DISPLAYS=true
endif
ifneq ($(NUM_FRAMEBUFFER_SURFACE_BUFFERS),)
LOCAL_CFLAGS += -DNUM_FRAMEBUFFER_SURFACE_BUFFERS=$(NUM_FRAMEBUFFER_SURFACE_BUFFERS)
endif

14
services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
View File

@ -22,6 +22,8 @@
namespace android {
// ---------------------------------------------------------------------------
static bool sForceHwcCopy = FORCE_HWC_COPY_FOR_VIRTUAL_DISPLAYS;
#define VDS_LOGE(msg, ...) ALOGE("[%s] "msg, \
mDisplayName.string(), ##__VA_ARGS__)
#define VDS_LOGW_IF(cond, msg, ...) ALOGW_IF(cond, "[%s] "msg, \
@ -96,6 +98,18 @@ status_t VirtualDisplaySurface::prepareFrame(CompositionType compositionType) {
mDbgState = DBG_STATE_PREPARED;
mCompositionType = compositionType;
if (sForceHwcCopy && mCompositionType == COMPOSITION_GLES) {
// Some hardware can do RGB->YUV conversion more efficiently in hardware
// controlled by HWC than in hardware controlled by the video encoder.
// Forcing GLES-composed frames to go through an extra copy by the HWC
// allows the format conversion to happen there, rather than passing RGB
// directly to the consumer.
//
// On the other hand, when the consumer prefers RGB or can consume RGB
// inexpensively, this forces an unnecessary copy.
mCompositionType = COMPOSITION_MIXED;
}
if (mCompositionType != mDbgLastCompositionType) {
VDS_LOGV("prepareFrame: composition type changed to %s",
dbgCompositionTypeStr(mCompositionType));