cameraserver: Implement AIDL wrapper class for HIDL ICameraServiceListener.
Bug: 110364143
Test: (build) mm -j64
Change-Id: Ibf1da18d0fac5ddaab5da8df52c4183b3aaadbfc
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>
diff --git a/services/camera/libcameraservice/hidl/CameraHybridInterface.h b/services/camera/libcameraservice/hidl/CameraHybridInterface.h
new file mode 100644
index 0000000..baf0112
--- /dev/null
+++ b/services/camera/libcameraservice/hidl/CameraHybridInterface.h
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2018 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_CAMERA_HYBRIDINTERFACE_H
+#define ANDROID_CAMERA_HYBRIDINTERFACE_H
+
+#include <vector>
+#include <mutex>
+
+#include <binder/Parcel.h>
+#include <hidl/HidlSupport.h>
+
+namespace android {
+namespace camerahybrid {
+typedef ::android::hidl::base::V1_0::IBase HInterface;
+
+template <
+ typename HINTERFACE,
+ typename INTERFACE,
+ typename BNINTERFACE >
+class H2BConverter : public BNINTERFACE {
+public:
+ typedef H2BConverter<HINTERFACE, INTERFACE, BNINTERFACE> CBase; // Converter Base
+ typedef INTERFACE BaseInterface;
+ typedef HINTERFACE HalInterface;
+
+ H2BConverter(const sp<HalInterface>& base) : mBase(base) {}
+ virtual sp<HalInterface> getHalInterface() { return mBase; }
+ virtual status_t linkToDeath(
+ const sp<IBinder::DeathRecipient>& recipient,
+ void* cookie = nullptr,
+ uint32_t flags = 0);
+ virtual status_t unlinkToDeath(
+ const wp<IBinder::DeathRecipient>& recipient,
+ void* cookie = nullptr,
+ uint32_t flags = 0,
+ wp<IBinder::DeathRecipient>* outRecipient = nullptr);
+
+protected:
+ sp<HalInterface> mBase;
+ struct Obituary : public hardware::hidl_death_recipient {
+ wp<IBinder::DeathRecipient> recipient;
+ void* cookie;
+ uint32_t flags;
+ wp<IBinder> who;
+ Obituary(
+ const wp<IBinder::DeathRecipient>& r,
+ void* c, uint32_t f,
+ const wp<IBinder>& w) :
+ recipient(r), cookie(c), flags(f), who(w) {
+ }
+ Obituary(const Obituary& o) :
+ recipient(o.recipient),
+ cookie(o.cookie),
+ flags(o.flags),
+ who(o.who) {
+ }
+ Obituary& operator=(const Obituary& o) {
+ recipient = o.recipient;
+ cookie = o.cookie;
+ flags = o.flags;
+ who = o.who;
+ return *this;
+ }
+ void serviceDied(uint64_t, const wp<HInterface>&) override {
+ sp<IBinder::DeathRecipient> dr = recipient.promote();
+ if (dr != nullptr) {
+ dr->binderDied(who);
+ }
+ }
+ };
+ std::mutex mObituariesLock;
+ std::vector<sp<Obituary> > mObituaries;
+};
+
+template <
+ typename HINTERFACE,
+ typename INTERFACE,
+ typename BNINTERFACE>
+status_t H2BConverter<HINTERFACE, INTERFACE, BNINTERFACE>::
+ linkToDeath(
+ const sp<IBinder::DeathRecipient>& recipient,
+ void* cookie, uint32_t flags) {
+ LOG_ALWAYS_FATAL_IF(recipient == nullptr,
+ "linkToDeath(): recipient must be non-nullptr");
+ {
+ std::lock_guard<std::mutex> lock(mObituariesLock);
+ mObituaries.push_back(new Obituary(recipient, cookie, flags, this));
+ if (!mBase->linkToDeath(mObituaries.back(), 0)) {
+ return DEAD_OBJECT;
+ }
+ }
+ return NO_ERROR;
+}
+
+template <
+ typename HINTERFACE,
+ typename INTERFACE,
+ typename BNINTERFACE>
+status_t H2BConverter<HINTERFACE, INTERFACE, BNINTERFACE>::
+ unlinkToDeath(
+ const wp<IBinder::DeathRecipient>& recipient,
+ void* cookie, uint32_t flags,
+ wp<IBinder::DeathRecipient>* outRecipient) {
+ std::lock_guard<std::mutex> lock(mObituariesLock);
+ for (auto i = mObituaries.begin(); i != mObituaries.end(); ++i) {
+ if ((flags = (*i)->flags) && (
+ (recipient == (*i)->recipient) ||
+ ((recipient == nullptr) && (cookie == (*i)->cookie)))) {
+ if (outRecipient != nullptr) {
+ *outRecipient = (*i)->recipient;
+ }
+ bool success = mBase->unlinkToDeath(*i);
+ mObituaries.erase(i);
+ return success ? NO_ERROR : DEAD_OBJECT;
+ }
+ }
+ return NAME_NOT_FOUND;
+}
+
+} // namespace camerahybrid
+} // namespace android
+
+#endif // ANDROID_CAMERA_HYBRIDINTERFACE_H
+