Merge "SurfaceFlinger: dispatch only one vsync callback on composer 2.4" (8914b952) · Commits · e / os / platform_frameworks_native

services/surfaceflinger/DisplayHardware/HWC2.cpp

+20 −7

Original line number	Diff line number	Diff line
		@@ -62,8 +62,11 @@ inline bool hasMetadataKey(const std::set<Hwc2::PerFrameMetadataKey>& keys,

		class ComposerCallbackBridge : public Hwc2::IComposerCallback {
		public:
		ComposerCallbackBridge(ComposerCallback* callback, int32_t sequenceId)
		: mCallback(callback), mSequenceId(sequenceId) {}
		ComposerCallbackBridge(ComposerCallback* callback, int32_t sequenceId,
		bool vsyncSwitchingSupported)
		: mCallback(callback),
		mSequenceId(sequenceId),
		mVsyncSwitchingSupported(vsyncSwitchingSupported) {}

		Return<void> onHotplug(Hwc2::Display display,
		IComposerCallback::Connection conn) override
		@@ -81,15 +84,23 @@ public:

		Return<void> onVsync(Hwc2::Display display, int64_t timestamp) override
		{
		if (!mVsyncSwitchingSupported) {
		mCallback->onVsyncReceived(mSequenceId, display, timestamp, std::nullopt);
		} else {
		ALOGW("Unexpected onVsync callback on composer >= 2.4, ignoring.");
		}
		return Void();
		}

		Return<void> onVsync_2_4(Hwc2::Display display, int64_t timestamp,
		Hwc2::VsyncPeriodNanos vsyncPeriodNanos) override {
		if (mVsyncSwitchingSupported) {
		// TODO(b/140201379): use vsyncPeriodNanos in the new DispSync
		mCallback->onVsyncReceived(mSequenceId, display, timestamp,
		std::make_optional(vsyncPeriodNanos));
		} else {
		ALOGW("Unexpected onVsync_2_4 callback on composer <= 2.3, ignoring.");
		}
		return Void();
		}

		@@ -107,6 +118,7 @@ public:
		private:
		ComposerCallback* mCallback;
		int32_t mSequenceId;
		const bool mVsyncSwitchingSupported;
		};

		} // namespace anonymous
		@@ -126,7 +138,8 @@ void Device::registerCallback(ComposerCallback* callback, int32_t sequenceId) {
		}
		mRegisteredCallback = true;
		sp<ComposerCallbackBridge> callbackBridge(
		new ComposerCallbackBridge(callback, sequenceId));
		new ComposerCallbackBridge(callback, sequenceId,
		mComposer->isVsyncPeriodSwitchSupported()));
		mComposer->registerCallback(callbackBridge);
		}