Make ANativeWindow available over stable AIDL
Bug: 251850069
Test: m
Change-Id: Ia47a5c6a83a7c51b4034c901f6ffc9813d3a6eb3
diff --git a/libs/nativewindow/ANativeWindow.cpp b/libs/nativewindow/ANativeWindow.cpp
index b075080..c345385 100644
--- a/libs/nativewindow/ANativeWindow.cpp
+++ b/libs/nativewindow/ANativeWindow.cpp
@@ -20,10 +20,15 @@
// from nativewindow/includes/system/window.h
// (not to be confused with the compatibility-only window.h from system/core/includes)
#include <system/window.h>
+#include <android/native_window_aidl.h>
#include <private/android/AHardwareBufferHelpers.h>
+#include <log/log.h>
#include <ui/GraphicBuffer.h>
+#include <gui/Surface.h>
+#include <gui/view/Surface.h>
+#include <android/binder_libbinder.h>
using namespace android;
@@ -59,6 +64,13 @@
return false;
}
}
+static sp<IGraphicBufferProducer> IGraphicBufferProducer_from_ANativeWindow(ANativeWindow* window) {
+ return Surface::getIGraphicBufferProducer(window);
+}
+
+static sp<IBinder> SurfaceControlHandle_from_ANativeWindow(ANativeWindow* window) {
+ return Surface::getSurfaceControlHandle(window);
+}
/**************************************************************************************************
* NDK
@@ -350,6 +362,42 @@
return native_window_set_auto_prerotation(window, autoPrerotation);
}
+binder_status_t ANativeWindow_readFromParcel(
+ const AParcel* _Nonnull parcel, ANativeWindow* _Nullable* _Nonnull outWindow) {
+ const Parcel* nativeParcel = AParcel_viewPlatformParcel(parcel);
+
+ // Use a android::view::Surface to unparcel the window
+ std::shared_ptr<android::view::Surface> shimSurface = std::shared_ptr<android::view::Surface>();
+ status_t ret = shimSurface->readFromParcel(nativeParcel);
+ if (ret != OK) {
+ ALOGE("%s: Error: Failed to create android::view::Surface from AParcel", __FUNCTION__);
+ return STATUS_BAD_VALUE;
+ }
+ sp<Surface> surface = sp<Surface>::make(
+ shimSurface->graphicBufferProducer, false, shimSurface->surfaceControlHandle);
+ ANativeWindow* anw = surface.get();
+ ANativeWindow_acquire(anw);
+ *outWindow = anw;
+ return STATUS_OK;
+}
+
+binder_status_t ANativeWindow_writeToParcel(
+ ANativeWindow* _Nonnull window, AParcel* _Nonnull parcel) {
+ int value;
+ int err = (*window->query)(window, NATIVE_WINDOW_CONCRETE_TYPE, &value);
+ if (err != OK || value != NATIVE_WINDOW_SURFACE) {
+ ALOGE("Error: ANativeWindow is not backed by Surface");
+ return STATUS_BAD_VALUE;
+ }
+ // Use a android::view::Surface to parcelize the window
+ std::shared_ptr<android::view::Surface> shimSurface = std::shared_ptr<android::view::Surface>();
+ shimSurface->graphicBufferProducer = IGraphicBufferProducer_from_ANativeWindow(window);
+ shimSurface->surfaceControlHandle = SurfaceControlHandle_from_ANativeWindow(window);
+
+ Parcel* nativeParcel = AParcel_viewPlatformParcel(parcel);
+ return shimSurface->writeToParcel(nativeParcel);
+}
+
/**************************************************************************************************
* apex-stable
**************************************************************************************************/
diff --git a/libs/nativewindow/Android.bp b/libs/nativewindow/Android.bp
index 3b58265..bc0bfc5 100644
--- a/libs/nativewindow/Android.bp
+++ b/libs/nativewindow/Android.bp
@@ -110,9 +110,11 @@
static_libs: [
"libarect",
"libgrallocusage",
+ "libgui_aidl_static",
],
header_libs: [
+ "libgui_headers",
"libarect_headers",
"libnativebase_headers",
"libnativewindow_headers",
diff --git a/libs/nativewindow/include/android/native_window.h b/libs/nativewindow/include/android/native_window.h
index 281ec52..a27e3dd 100644
--- a/libs/nativewindow/include/android/native_window.h
+++ b/libs/nativewindow/include/android/native_window.h
@@ -376,7 +376,7 @@
__INTRODUCED_IN(__ANDROID_API_U__);
#ifdef __cplusplus
-};
+}
#endif
#endif // ANDROID_NATIVE_WINDOW_H
diff --git a/libs/nativewindow/include/android/native_window_aidl.h b/libs/nativewindow/include/android/native_window_aidl.h
new file mode 100644
index 0000000..a252245
--- /dev/null
+++ b/libs/nativewindow/include/android/native_window_aidl.h
@@ -0,0 +1,161 @@
+/*
+ * Copyright 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.
+ */
+
+/**
+ * @file native_window_aidl.h
+ * @brief NativeWindow NDK AIDL glue code
+ */
+
+/**
+ * @addtogroup ANativeWindow
+ *
+ * Parcelable support for ANativeWindow. Can be used with libbinder_ndk
+ *
+ * @{
+ */
+
+#ifndef ANDROID_NATIVE_WINDOW_AIDL_H
+#define ANDROID_NATIVE_WINDOW_AIDL_H
+
+#include <android/binder_parcel.h>
+#include <android/native_window.h>
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+/**
+ * Read an ANativeWindow from a AParcel. The output buffer will have an
+ * initial reference acquired and will need to be released with
+ * ANativeWindow_release.
+ *
+ * Available since API level 34.
+ *
+ * \return STATUS_OK on success
+ * STATUS_BAD_VALUE if the parcel or outBuffer is null, or if there's an
+ * issue deserializing (eg, corrupted parcel)
+ * STATUS_BAD_TYPE if the parcel's current data position is not that of
+ * an ANativeWindow type
+ * STATUS_NO_MEMORY if an allocation fails
+ */
+binder_status_t ANativeWindow_readFromParcel(const AParcel* _Nonnull parcel,
+ ANativeWindow* _Nullable* _Nonnull outWindow) __INTRODUCED_IN(__ANDROID_API_U__);
+
+/**
+ * Write an ANativeWindow to an AParcel.
+ *
+ * Available since API level 34.
+ *
+ * \return STATUS_OK on success.
+ * STATUS_BAD_VALUE if either buffer or parcel is null, or if the ANativeWindow*
+ * fails to serialize (eg, internally corrupted)
+ * STATUS_NO_MEMORY if the parcel runs out of space to store the buffer & is
+ * unable to allocate more
+ * STATUS_FDS_NOT_ALLOWED if the parcel does not allow storing FDs
+ */
+binder_status_t ANativeWindow_writeToParcel(ANativeWindow* _Nonnull window,
+ AParcel* _Nonnull parcel) __INTRODUCED_IN(__ANDROID_API_U__);
+
+__END_DECLS
+
+// Only enable the AIDL glue helper if this is C++
+#ifdef __cplusplus
+
+namespace aidl::android::hardware {
+
+/**
+ * Wrapper class that enables interop with AIDL NDK generation
+ * Takes ownership of the ANativeWindow* given to it in reset() and will automatically
+ * destroy it in the destructor, similar to a smart pointer container
+ */
+class NativeWindow {
+public:
+ NativeWindow() noexcept {}
+ explicit NativeWindow(ANativeWindow* _Nullable window) {
+ reset(window);
+ }
+
+ explicit NativeWindow(NativeWindow&& other) noexcept {
+ mWindow = other.release(); // steal ownership from r-value
+ }
+
+ ~NativeWindow() {
+ reset();
+ }
+
+ binder_status_t readFromParcel(const AParcel* _Nonnull parcel) {
+ reset();
+ return ANativeWindow_readFromParcel(parcel, &mWindow);
+ }
+
+ binder_status_t writeToParcel(AParcel* _Nonnull parcel) const {
+ if (!mWindow) {
+ return STATUS_BAD_VALUE;
+ }
+ return ANativeWindow_writeToParcel(mWindow, parcel);
+ }
+
+ /**
+ * Destroys any currently owned ANativeWindow* and takes ownership of the given
+ * ANativeWindow*
+ *
+ * @param buffer The buffer to take ownership of
+ */
+ void reset(ANativeWindow* _Nullable window = nullptr) noexcept {
+ if (mWindow) {
+ ANativeWindow_release(mWindow);
+ mWindow = nullptr;
+ }
+ if (window != nullptr) {
+ ANativeWindow_acquire(window);
+ }
+ mWindow = window;
+ }
+ inline ANativeWindow* _Nullable operator-> () const { return mWindow; }
+ inline ANativeWindow* _Nullable get() const { return mWindow; }
+ inline explicit operator bool () const { return mWindow != nullptr; }
+
+ NativeWindow& operator=(NativeWindow&& other) noexcept {
+ mWindow = other.release(); // steal ownership from r-value
+ return *this;
+ }
+
+ /**
+ * Stops managing any contained ANativeWindow*, returning it to the caller. Ownership
+ * is released.
+ * @return ANativeWindow* or null if this was empty
+ */
+ [[nodiscard]] ANativeWindow* _Nullable release() noexcept {
+ ANativeWindow* _Nullable ret = mWindow;
+ mWindow = nullptr;
+ return ret;
+ }
+private:
+ ANativeWindow* _Nullable mWindow = nullptr;
+ NativeWindow(const NativeWindow &other) = delete;
+ NativeWindow& operator=(const NativeWindow &other) = delete;
+};
+
+} // aidl::android::hardware
+ //
+namespace aidl::android::view {
+ using Surface = aidl::android::hardware::NativeWindow;
+}
+
+#endif // __cplusplus
+
+#endif // ANDROID_NATIVE_WINDOW_AIDL_H
+
+/** @} */
diff --git a/libs/nativewindow/libnativewindow.map.txt b/libs/nativewindow/libnativewindow.map.txt
index ce108b6..76d23fa 100644
--- a/libs/nativewindow/libnativewindow.map.txt
+++ b/libs/nativewindow/libnativewindow.map.txt
@@ -57,6 +57,8 @@
ANativeWindow_setUsage; # llndk
ANativeWindow_tryAllocateBuffers; # introduced=30
ANativeWindow_unlockAndPost;
+ ANativeWindow_readFromParcel; # introduced=UpsideDownCake
+ ANativeWindow_writeToParcel; # introduced=UpsideDownCake
local:
*;
};