Add ability to make SyncFence from EGL (1ce46f75) · Commits · e / os / android_frameworks_base

core/api/current.txt

+12 −2

Original line number	Diff line number	Diff line
		@@ -17108,12 +17108,17 @@ package android.hardware {
		field public static final int MICROPHONE = 1; // 0x1
		}

		public final class SyncFence implements java.io.Closeable android.os.Parcelable {
		method public void close() throws java.io.IOException;
		public final class SyncFence implements java.lang.AutoCloseable android.os.Parcelable {
		method public boolean await(@NonNull java.time.Duration);
		method public boolean awaitForever();
		method public void close();
		method public int describeContents();
		method public long getSignalTime();
		method public boolean isValid();
		method public void writeToParcel(@NonNull android.os.Parcel, int);
		field @NonNull public static final android.os.Parcelable.Creator<android.hardware.SyncFence> CREATOR;
		field public static final long SIGNAL_TIME_INVALID = -1L; // 0xffffffffffffffffL
		field public static final long SIGNAL_TIME_PENDING = 9223372036854775807L; // 0x7fffffffffffffffL
		}

		public final class TriggerEvent {
		@@ -27843,12 +27848,17 @@ package android.opengl {

		public class EGLExt {
		ctor public EGLExt();
		method @NonNull public static android.hardware.SyncFence eglDupNativeFenceFDANDROID(@NonNull android.opengl.EGLDisplay, @NonNull android.opengl.EGLSync);
		method public static boolean eglPresentationTimeANDROID(android.opengl.EGLDisplay, android.opengl.EGLSurface, long);
		field public static final int EGL_CONTEXT_FLAGS_KHR = 12540; // 0x30fc
		field public static final int EGL_CONTEXT_MAJOR_VERSION_KHR = 12440; // 0x3098
		field public static final int EGL_CONTEXT_MINOR_VERSION_KHR = 12539; // 0x30fb
		field public static final int EGL_NO_NATIVE_FENCE_FD_ANDROID = -1; // 0xffffffff
		field public static final int EGL_OPENGL_ES3_BIT_KHR = 64; // 0x40
		field public static final int EGL_RECORDABLE_ANDROID = 12610; // 0x3142
		field public static final int EGL_SYNC_NATIVE_FENCE_ANDROID = 12612; // 0x3144
		field public static final int EGL_SYNC_NATIVE_FENCE_FD_ANDROID = 12613; // 0x3145
		field public static final int EGL_SYNC_NATIVE_FENCE_SIGNALED_ANDROID = 12614; // 0x3146
		}

		public class EGLImage extends android.opengl.EGLObjectHandle {

core/java/android/hardware/SyncFence.java

+150 −33

Original line number	Diff line number	Diff line
		@@ -17,12 +17,17 @@
		package android.hardware;

		import android.annotation.NonNull;
		import android.opengl.EGLDisplay;
		import android.opengl.EGLSync;
		import android.os.Parcel;
		import android.os.ParcelFileDescriptor;
		import android.os.Parcelable;

		import java.io.Closeable;
		import libcore.util.NativeAllocationRegistry;

		import java.io.FileDescriptor;
		import java.io.IOException;
		import java.time.Duration;

		/**
		* A SyncFence represents a synchronization primitive which signals when hardware buffers have
		@@ -34,19 +39,57 @@ import java.io.IOException;
		* Once the fence signals, then the backing storage for the framebuffer may be safely read from,
		* such as for display or for media encoding.</p>
		*
		* @see <a href="https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCreateFence.html">
		* VkFence</a>
		* @see android.opengl.EGLExt#eglDupNativeFenceFDANDROID(EGLDisplay, EGLSync)
		* @see android.media.Image#getFence()
		*/
		public final class SyncFence implements AutoCloseable, Parcelable {

		/**
		* An invalid signal time. Represents either the signal time for a SyncFence that isn't valid
		* (that is, {@link #isValid()} is false), or if an error occurred while attempting to retrieve
		* the signal time.
		*/
		public final class SyncFence implements Closeable, Parcelable {
		private static final String TAG = "SyncFence";
		public static final long SIGNAL_TIME_INVALID = -1;

		/**
		* Wrapped {@link android.os.ParcelFileDescriptor}.
		* A pending signal time. This is equivalent to the max value of a long, representing an
		* infinitely far point in the future.
		*/
		private ParcelFileDescriptor mWrapped;
		public static final long SIGNAL_TIME_PENDING = Long.MAX_VALUE;

		private static final NativeAllocationRegistry sRegistry =
		NativeAllocationRegistry.createNonmalloced(SyncFence.class.getClassLoader(),
		nGetDestructor(), 4);

		private long mNativePtr;

		// The destructor for this object
		// This is also used as our internal lock object. Although SyncFence doesn't claim to be
		// thread-safe, the cost of doing so to avoid issues around double-close or similar issues
		// is well worth making.
		private final Runnable mCloser;

		private SyncFence(@NonNull ParcelFileDescriptor wrapped) {
		mWrapped = wrapped;
		mNativePtr = nCreate(wrapped.detachFd());
		mCloser = sRegistry.registerNativeAllocation(this, mNativePtr);
		}

		private SyncFence(@NonNull Parcel parcel) {
		boolean valid = parcel.readBoolean();
		FileDescriptor fileDescriptor = null;
		if (valid) {
		fileDescriptor = parcel.readRawFileDescriptor();
		}
		if (fileDescriptor != null) {
		mNativePtr = nCreate(fileDescriptor.getInt$());
		mCloser = sRegistry.registerNativeAllocation(this, mNativePtr);
		} else {
		mCloser = () -> {};
		}
		}

		private SyncFence() {
		mCloser = () -> {};
		}

		/***
		@@ -56,7 +99,7 @@ public final class SyncFence implements Closeable, Parcelable {
		* @hide
		*/
		public static @NonNull SyncFence createEmpty() {
		return new SyncFence(ParcelFileDescriptor.adoptFd(-1));
		return new SyncFence();
		}

		/**
		@@ -75,7 +118,13 @@ public final class SyncFence implements Closeable, Parcelable {
		* @hide
		*/
		public @NonNull ParcelFileDescriptor getFdDup() throws IOException {
		return mWrapped.dup();
		synchronized (mCloser) {
		final int fd = mNativePtr != 0 ? nGetFd(mNativePtr) : -1;
		if (fd == -1) {
		throw new IllegalStateException("Cannot dup the FD of an invalid SyncFence");
		}
		return ParcelFileDescriptor.fromFd(fd);
		}
		}

		/**
		@@ -85,29 +134,84 @@ public final class SyncFence implements Closeable, Parcelable {
		* {@code false} otherwise.
		*/
		public boolean isValid() {
		return mWrapped.getFileDescriptor().valid();
		synchronized (mCloser) {
		return mNativePtr != 0 && nIsValid(mNativePtr);
		}
		}

		/**
		* Waits for a SyncFence to signal for up to the timeout duration.
		*
		* An invalid SyncFence, that is if {@link #isValid()} is false, is treated equivalently
		* to a SyncFence that has already signaled. That is, wait() will immediately return true.
		*
		* @param timeout The timeout duration. If the duration is negative, then this waits forever.
		* @return true if the fence signaled or isn't valid, false otherwise.
		*/
		public boolean await(@NonNull Duration timeout) {
		final long timeoutNanos;
		if (timeout.isNegative()) {
		timeoutNanos = -1;
		} else {
		timeoutNanos = timeout.toNanos();
		}
		return await(timeoutNanos);
		}

		/**
		* Waits forever for a SyncFence to signal.
		*
		* An invalid SyncFence, that is if {@link #isValid()} is false, is treated equivalently
		* to a SyncFence that has already signaled. That is, wait() will immediately return true.
		*
		* @return true if the fence signaled or isn't valid, false otherwise.
		*/
		public boolean awaitForever() {
		return await(-1);
		}

		private boolean await(long timeoutNanos) {
		synchronized (mCloser) {
		return mNativePtr != 0 && nWait(mNativePtr, timeoutNanos);
		}
		}

		/**
		* Returns the time that the fence signaled in the CLOCK_MONOTONIC time domain.
		*
		* If the fence isn't valid, that is if {@link #isValid()} is false, then this returns
		* {@link #SIGNAL_TIME_INVALID}. Similarly, if an error occurs while trying to access the
		* signal time, then {@link #SIGNAL_TIME_INVALID} is also returned.
		*
		* If the fence hasn't yet signaled, then {@link #SIGNAL_TIME_PENDING} is returned.
		*
		* @return The time the fence signaled, {@link #SIGNAL_TIME_INVALID} if there's an error,
		* or {@link #SIGNAL_TIME_PENDING} if the fence hasn't signaled yet.
		*/
		public long getSignalTime() {
		synchronized (mCloser) {
		return mNativePtr != 0 ? nGetSignalTime(mNativePtr) : SIGNAL_TIME_INVALID;
		}
		}

		/**
		* Close the SyncFence. This implementation closes the underlying OS resources allocated
		* this stream.
		*
		* @throws IOException If an error occurs attempting to close this SyncFence.
		*/
		@Override
		public void close() throws IOException {
		if (mWrapped != null) {
		try {
		mWrapped.close();
		} finally {
		// success
		public void close() {
		synchronized (mCloser) {
		if (mNativePtr == 0) {
		return;
		}
		mNativePtr = 0;
		mCloser.run();
		}
		}

		@Override
		public int describeContents() {
		return mWrapped.describeContents();
		return CONTENTS_FILE_DESCRIPTOR;
		}

		/**
		@@ -119,10 +223,16 @@ public final class SyncFence implements Closeable, Parcelable {
		*/
		@Override
		public void writeToParcel(@NonNull Parcel out, int flags) {
		try {
		mWrapped.writeToParcel(out, flags);
		} finally {
		// success
		synchronized (mCloser) {
		final int fd = mNativePtr != 0 ? nGetFd(mNativePtr) : -1;
		if (fd == -1) {
		out.writeBoolean(false);
		} else {
		out.writeBoolean(true);
		FileDescriptor temp = new FileDescriptor();
		temp.setInt$(fd);
		out.writeFileDescriptor(temp);
		}
		}
		}

		@@ -130,7 +240,7 @@ public final class SyncFence implements Closeable, Parcelable {
		new Parcelable.Creator<SyncFence>() {
		@Override
		public SyncFence createFromParcel(Parcel in) {
		return new SyncFence(ParcelFileDescriptor.CREATOR.createFromParcel(in));
		return new SyncFence(in);
		}

		@Override
		@@ -138,4 +248,11 @@ public final class SyncFence implements Closeable, Parcelable {
		return new SyncFence[size];
		}
		};

		private static native long nGetDestructor();
		private static native long nCreate(int fd);
		private static native boolean nIsValid(long nPtr);
		private static native int nGetFd(long nPtr);
		private static native boolean nWait(long nPtr, long timeout);
		private static native long nGetSignalTime(long nPtr);
		}

core/jni/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -188,6 +188,7 @@ cc_library_shared {
		"android_hardware_HardwareBuffer.cpp",
		"android_hardware_SensorManager.cpp",
		"android_hardware_SerialPort.cpp",
		"android_hardware_SyncFence.cpp",
		"android_hardware_UsbDevice.cpp",
		"android_hardware_UsbDeviceConnection.cpp",
		"android_hardware_UsbRequest.cpp",

core/jni/AndroidRuntime.cpp

+2 −0

Original line number	Diff line number	Diff line
		@@ -82,6 +82,7 @@ extern int register_android_hardware_display_DisplayManagerGlobal(JNIEnv* env);
		extern int register_android_hardware_HardwareBuffer(JNIEnv *env);
		extern int register_android_hardware_SensorManager(JNIEnv *env);
		extern int register_android_hardware_SerialPort(JNIEnv *env);
		extern int register_android_hardware_SyncFence(JNIEnv* env);
		extern int register_android_hardware_UsbDevice(JNIEnv *env);
		extern int register_android_hardware_UsbDeviceConnection(JNIEnv *env);
		extern int register_android_hardware_UsbRequest(JNIEnv *env);
		@@ -1601,6 +1602,7 @@ static const RegJNIRec gRegJNI[] = {
		REG_JNI(register_android_hardware_HardwareBuffer),
		REG_JNI(register_android_hardware_SensorManager),
		REG_JNI(register_android_hardware_SerialPort),
		REG_JNI(register_android_hardware_SyncFence),
		REG_JNI(register_android_hardware_UsbDevice),
		REG_JNI(register_android_hardware_UsbDeviceConnection),
		REG_JNI(register_android_hardware_UsbRequest),

core/jni/android_hardware_SyncFence.cpp

0 → 100644

+89 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2022 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		#define LOG_TAG "SyncFence"

		#include <nativehelper/JNIHelp.h>
		#include <ui/Fence.h>

		#include "core_jni_helpers.h"
		#include "jni.h"

		using namespace android;

		template <typename T>
		jlong toJlong(T* ptr) {
		return static_cast<jlong>(reinterpret_cast<uintptr_t>(ptr));
		}

		template <typename T>
		T* fromJlong(jlong jPtr) {
		return reinterpret_cast<T*>(static_cast<uintptr_t>(jPtr));
		}

		static void destroyFence(Fence* fence) {
		fence->decStrong(0);
		}

		static jlong SyncFence_getDestructor(JNIEnv*, jobject) {
		return toJlong(&destroyFence);
		}

		static jlong SyncFence_create(JNIEnv*, jobject, int fd) {
		Fence* fence = new Fence(fd);
		fence->incStrong(0);
		return toJlong(fence);
		}

		static jboolean SyncFence_isValid(JNIEnv*, jobject, jlong jPtr) {
		return fromJlong<Fence>(jPtr)->isValid();
		}

		static jint SyncFence_getFd(JNIEnv*, jobject, jlong jPtr) {
		return fromJlong<Fence>(jPtr)->get();
		}

		static jboolean SyncFence_wait(JNIEnv* env, jobject, jlong jPtr, jlong timeoutNanos) {
		Fence* fence = fromJlong<Fence>(jPtr);
		int err = fence->wait(timeoutNanos);
		return err == OK;
		}

		static jlong SyncFence_getSignalTime(JNIEnv* env, jobject, jlong jPtr) {
		return fromJlong<Fence>(jPtr)->getSignalTime();
		}

		// ----------------------------------------------------------------------------
		// JNI Glue
		// ----------------------------------------------------------------------------

		const char* const kClassPathName = "android/hardware/SyncFence";

		// clang-format off
		static const JNINativeMethod gMethods[] = {
		{ "nGetDestructor", "()J", (void*) SyncFence_getDestructor },
		{ "nCreate", "(I)J", (void*) SyncFence_create },
		{ "nIsValid", "(J)Z", (void*) SyncFence_isValid },
		{ "nGetFd", "(J)I", (void*) SyncFence_getFd },
		{ "nWait", "(JJ)Z", (void*) SyncFence_wait },
		{ "nGetSignalTime", "(J)J", (void*) SyncFence_getSignalTime },
		};
		// clang-format on

		int register_android_hardware_SyncFence(JNIEnv* env) {
		int err = RegisterMethodsOrDie(env, kClassPathName, gMethods, NELEM(gMethods));
		return err;
		}
		No newline at end of file