Add support for sending VSYNC events to the framework (461afeb9) · Commits · e / os / android_frameworks_native

include/surfaceflinger/ISurfaceComposer.h

+9 −1

Original line number	Diff line number	Diff line
		@@ -33,8 +33,9 @@
		namespace android {
		// ----------------------------------------------------------------------------

		class IMemoryHeap;
		class ComposerState;
		class IDisplayEventConnection;
		class IMemoryHeap;

		class ISurfaceComposer : public IInterface
		{
		@@ -124,13 +125,19 @@ public:
		uint32_t reqWidth, uint32_t reqHeight,
		uint32_t minLayerZ, uint32_t maxLayerZ) = 0;

		/* triggers screen off animation */
		virtual status_t turnElectronBeamOff(int32_t mode) = 0;

		/* triggers screen on animation */
		virtual status_t turnElectronBeamOn(int32_t mode) = 0;

		/* verify that an ISurfaceTexture was created by SurfaceFlinger.
		*/
		virtual bool authenticateSurfaceTexture(
		const sp<ISurfaceTexture>& surface) const = 0;

		/* return an IDisplayEventConnection */
		virtual sp<IDisplayEventConnection> createDisplayEventConnection() = 0;
		};

		// ----------------------------------------------------------------------------
		@@ -151,6 +158,7 @@ public:
		TURN_ELECTRON_BEAM_OFF,
		TURN_ELECTRON_BEAM_ON,
		AUTHENTICATE_SURFACE,
		CREATE_DISPLAY_EVENT_CONNECTION,
		};

		virtual status_t onTransact( uint32_t code,

libs/gui/Android.mk

+2 −0

Original line number	Diff line number	Diff line
		@@ -3,6 +3,8 @@ include $(CLEAR_VARS)

		LOCAL_SRC_FILES:= \
		BitTube.cpp \
		DisplayEventReceiver.cpp \
		IDisplayEventConnection.cpp \
		ISensorEventConnection.cpp \
		ISensorServer.cpp \
		ISurfaceTexture.cpp \

libs/gui/ISurfaceComposer.cpp

+32 −0

Original line number	Diff line number	Diff line
		@@ -29,6 +29,9 @@

		#include <surfaceflinger/ISurfaceComposer.h>

		#include <gui/BitTube.h>
		#include <gui/IDisplayEventConnection.h>

		#include <ui/DisplayInfo.h>

		#include <gui/ISurfaceTexture.h>
		@@ -44,6 +47,8 @@

		namespace android {

		class IDisplayEventConnection;

		class BpSurfaceComposer : public BpInterface<ISurfaceComposer>
		{
		public:
		@@ -174,6 +179,27 @@ public:
		}
		return result != 0;
		}

		virtual sp<IDisplayEventConnection> createDisplayEventConnection()
		{
		Parcel data, reply;
		sp<IDisplayEventConnection> result;
		int err = data.writeInterfaceToken(
		ISurfaceComposer::getInterfaceDescriptor());
		if (err != NO_ERROR) {
		return result;
		}
		err = remote()->transact(
		BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION,
		data, &reply);
		if (err != NO_ERROR) {
		LOGE("ISurfaceComposer::createDisplayEventConnection: error performing "
		"transaction: %s (%d)", strerror(-err), -err);
		return result;
		}
		result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder());
		return result;
		}
		};

		IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer");
		@@ -254,6 +280,12 @@ status_t BnSurfaceComposer::onTransact(
		int32_t result = authenticateSurfaceTexture(surfaceTexture) ? 1 : 0;
		reply->writeInt32(result);
		} break;
		case CREATE_DISPLAY_EVENT_CONNECTION: {
		CHECK_INTERFACE(ISurfaceComposer, data, reply);
		sp<IDisplayEventConnection> connection(createDisplayEventConnection());
		reply->writeStrongBinder(connection->asBinder());
		return NO_ERROR;
		} break;
		default:
		return BBinder::onTransact(code, data, reply, flags);
		}

services/surfaceflinger/Android.mk

+15 −12

Original line number	Diff line number	Diff line
		@@ -2,6 +2,7 @@ LOCAL_PATH:= $(call my-dir)
		include $(CLEAR_VARS)

		LOCAL_SRC_FILES:= \
		EventThread.cpp \
		Layer.cpp \
		LayerBase.cpp \
		LayerDim.cpp \
		@@ -10,6 +11,8 @@ LOCAL_SRC_FILES:= \
		DisplayHardware/DisplayHardware.cpp \
		DisplayHardware/DisplayHardwareBase.cpp \
		DisplayHardware/HWComposer.cpp \
		DisplayHardware/VSyncBarrier.cpp \
		DisplayEventConnection.cpp \
		GLExtensions.cpp \
		MessageQueue.cpp \
		SurfaceFlinger.cpp \

services/surfaceflinger/DisplayHardware/DisplayHardware.cpp

+34 −0

Original line number	Diff line number	Diff line
		@@ -140,6 +140,7 @@ void DisplayHardware::init(uint32_t dpy)
		mDpiX = mNativeWindow->xdpi;
		mDpiY = mNativeWindow->ydpi;
		mRefreshRate = fbDev->fps;
		mNextFakeVSync = 0;


		/* FIXME: this is a temporary HACK until we are able to report the refresh rate
		@@ -152,6 +153,8 @@ void DisplayHardware::init(uint32_t dpy)
		#warning "refresh rate set via makefile to REFRESH_RATE"
		#endif

		mRefreshPeriod = nsecs_t(1e9 / mRefreshRate);

		EGLint w, h, dummy;
		EGLint numConfigs=0;
		EGLSurface surface;
		@@ -346,6 +349,37 @@ uint32_t DisplayHardware::getPageFlipCount() const {
		return mPageFlipCount;
		}

		// this needs to be thread safe
		nsecs_t DisplayHardware::waitForVSync() const {
		nsecs_t timestamp;
		if (mVSync.wait(&timestamp) < 0) {
		// vsync not supported!
		usleep( getDelayToNextVSyncUs(&timestamp) );
		}
		return timestamp;
		}

		int32_t DisplayHardware::getDelayToNextVSyncUs(nsecs_t* timestamp) const {
		Mutex::Autolock _l(mFakeVSyncMutex);
		const nsecs_t period = mRefreshPeriod;
		const nsecs_t now = systemTime(CLOCK_MONOTONIC);
		nsecs_t next_vsync = mNextFakeVSync;
		nsecs_t sleep = next_vsync - now;
		if (sleep < 0) {
		// we missed, find where the next vsync should be
		sleep = (period - ((now - next_vsync) % period));
		next_vsync = now + sleep;
		}
		mNextFakeVSync = next_vsync + period;
		timestamp[0] = next_vsync;

		// round to next microsecond
		int32_t sleep_us = (sleep + 999LL) / 1000LL;

		// guaranteed to be > 0
		return sleep_us;
		}

		status_t DisplayHardware::compositionComplete() const {
		return mNativeWindow->compositionComplete();
		}