Add BufferQueueConverter library
This library provides APIs to get ANativeWindow from
IGraphicBufferProducer.
Bug: 146567078
Bug: 147553536
Test: VtsHalEvsV1_1TargetTest
Change-Id: Ibc6e3a137642db9d4e7120bfff1c6e3e2c80380e
Signed-off-by: Changyeon Jo <changyeon@google.com>
diff --git a/libs/bufferqueueconverter/Android.bp b/libs/bufferqueueconverter/Android.bp
new file mode 100644
index 0000000..bab2674
--- /dev/null
+++ b/libs/bufferqueueconverter/Android.bp
@@ -0,0 +1,28 @@
+cc_library_headers {
+ name: "libbufferqueueconverter_headers",
+ vendor_available: true,
+ export_include_dirs: ["include"],
+}
+
+cc_library_shared {
+ name: "libbufferqueueconverter",
+ vendor_available: true,
+ vndk: {
+ enabled: true,
+ },
+ double_loadable: true,
+
+ srcs: [
+ "BufferQueueConverter.cpp",
+ ],
+
+ shared_libs: [
+ "libgui",
+ "libui",
+ "libutils",
+ "libbinder",
+ "libbase",
+ "liblog",
+ ],
+ export_include_dirs: ["include"],
+}
diff --git a/libs/bufferqueueconverter/BufferQueueConverter.cpp b/libs/bufferqueueconverter/BufferQueueConverter.cpp
new file mode 100644
index 0000000..b1896fa
--- /dev/null
+++ b/libs/bufferqueueconverter/BufferQueueConverter.cpp
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2020 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.
+ */
+
+#include <gui/Surface.h>
+#include <gui/bufferqueue/2.0/H2BGraphicBufferProducer.h>
+
+#include "include/bufferqueueconverter/BufferQueueConverter.h"
+
+
+using ::android::Surface;
+using ::android::IGraphicBufferProducer;
+using ::android::hardware::graphics::bufferqueue::V2_0::utils::H2BGraphicBufferProducer;
+
+
+namespace android {
+
+struct SurfaceHolder {
+ sp<Surface> surface;
+ SurfaceHolder(const sp<Surface>& s) : surface(s) {}
+};
+
+/**
+ * Custom deleter for SurfaceHolder unique pointer
+ */
+void destroySurfaceHolder(SurfaceHolder* surfaceHolder) {
+ delete surfaceHolder;
+}
+
+
+SurfaceHolderUniquePtr getSurfaceFromHGBP(const sp<HGraphicBufferProducer>& token) {
+ if (token == nullptr) {
+ ALOGE("Passed IGraphicBufferProducer handle is invalid.");
+ return SurfaceHolderUniquePtr(nullptr, nullptr);
+ }
+
+ sp<IGraphicBufferProducer> bufferProducer = new H2BGraphicBufferProducer(token);
+ if (bufferProducer == nullptr) {
+ ALOGE("Failed to get IGraphicBufferProducer.");
+ return SurfaceHolderUniquePtr(nullptr, nullptr);
+ }
+
+ sp<Surface> newSurface(new Surface(bufferProducer, true));
+ if (newSurface == nullptr) {
+ ALOGE("Failed to create Surface from HGBP.");
+ return SurfaceHolderUniquePtr(nullptr, nullptr);
+ }
+
+ return SurfaceHolderUniquePtr(new SurfaceHolder(newSurface), destroySurfaceHolder);
+}
+
+
+ANativeWindow* getNativeWindow(SurfaceHolder* handle) {
+ if (handle == nullptr) {
+ ALOGE("SurfaceHolder is invalid.");
+ return nullptr;
+ }
+
+ return static_cast<ANativeWindow*>(handle->surface.get());
+}
+
+} // namespace android
diff --git a/libs/bufferqueueconverter/include/bufferqueueconverter/BufferQueueConverter.h b/libs/bufferqueueconverter/include/bufferqueueconverter/BufferQueueConverter.h
new file mode 100644
index 0000000..84bceba
--- /dev/null
+++ b/libs/bufferqueueconverter/include/bufferqueueconverter/BufferQueueConverter.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2020 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.
+ */
+
+#ifndef ANDROID_BUFFER_QUEUE_CONVERTER_H
+#define ANDROID_BUFFER_QUEUE_CONVERTER_H
+
+#include <gui/IGraphicBufferProducer.h>
+#include <android/native_window.h>
+
+using ::android::sp;
+using HGraphicBufferProducer =
+ ::android::hardware::graphics::bufferqueue::V2_0::IGraphicBufferProducer;
+
+namespace android {
+ /**
+ * Opaque handle for a data structure holding Surface.
+ */
+ typedef struct SurfaceHolder SurfaceHolder;
+
+ /**
+ * SurfaceHolder unique pointer type
+ */
+ using SurfaceHolderUniquePtr = std::unique_ptr<SurfaceHolder, void(*)(SurfaceHolder*)>;
+
+ /**
+ * Returns a SurfaceHolder that wraps a Surface generated from a given HGBP.
+ *
+ * @param token Hardware IGraphicBufferProducer to create a
+ * Surface.
+ * @return SurfaceHolder Unique pointer to created SurfaceHolder object.
+ */
+ SurfaceHolderUniquePtr getSurfaceFromHGBP(const sp<HGraphicBufferProducer>& token);
+
+ /**
+ * Returns ANativeWindow pointer from a given SurfaceHolder. Returned
+ * pointer is valid only while the containing SurfaceHolder is alive.
+ *
+ * @param surfaceHolder SurfaceHolder to generate a native window.
+ * @return ANativeWindow* a pointer to a generated native window.
+ */
+ ANativeWindow* getNativeWindow(SurfaceHolder* surfaceHolder);
+
+} // namespace android
+
+#endif // ANDROID_BUFFER_QUEUE_CONVERTER_H