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139 lines
4.4 KiB
139 lines
4.4 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_CAMERA_HYBRIDINTERFACE_H
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#define ANDROID_CAMERA_HYBRIDINTERFACE_H
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#include <vector>
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#include <mutex>
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#include <binder/Parcel.h>
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#include <hidl/HidlSupport.h>
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namespace android {
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namespace camerahybrid {
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typedef ::android::hidl::base::V1_0::IBase HInterface;
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template <
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typename HINTERFACE,
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typename INTERFACE,
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typename BNINTERFACE >
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class H2BConverter : public BNINTERFACE {
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public:
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typedef H2BConverter<HINTERFACE, INTERFACE, BNINTERFACE> CBase; // Converter Base
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typedef INTERFACE BaseInterface;
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typedef HINTERFACE HalInterface;
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H2BConverter(const sp<HalInterface>& base) : mBase(base) {}
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virtual sp<HalInterface> getHalInterface() { return mBase; }
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virtual status_t linkToDeath(
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const sp<IBinder::DeathRecipient>& recipient,
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void* cookie = nullptr,
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uint32_t flags = 0);
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virtual status_t unlinkToDeath(
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const wp<IBinder::DeathRecipient>& recipient,
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void* cookie = nullptr,
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uint32_t flags = 0,
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wp<IBinder::DeathRecipient>* outRecipient = nullptr);
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protected:
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sp<HalInterface> mBase;
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struct Obituary : public hardware::hidl_death_recipient {
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wp<IBinder::DeathRecipient> recipient;
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void* cookie;
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uint32_t flags;
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wp<IBinder> who;
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Obituary(
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const wp<IBinder::DeathRecipient>& r,
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void* c, uint32_t f,
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const wp<IBinder>& w) :
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recipient(r), cookie(c), flags(f), who(w) {
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}
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Obituary(const Obituary& o) :
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recipient(o.recipient),
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cookie(o.cookie),
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flags(o.flags),
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who(o.who) {
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}
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Obituary& operator=(const Obituary& o) {
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recipient = o.recipient;
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cookie = o.cookie;
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flags = o.flags;
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who = o.who;
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return *this;
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}
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void serviceDied(uint64_t, const wp<HInterface>&) override {
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sp<IBinder::DeathRecipient> dr = recipient.promote();
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if (dr != nullptr) {
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dr->binderDied(who);
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}
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}
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};
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std::mutex mObituariesLock;
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std::vector<sp<Obituary> > mObituaries;
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};
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template <
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typename HINTERFACE,
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typename INTERFACE,
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typename BNINTERFACE>
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status_t H2BConverter<HINTERFACE, INTERFACE, BNINTERFACE>::
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linkToDeath(
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const sp<IBinder::DeathRecipient>& recipient,
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void* cookie, uint32_t flags) {
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LOG_ALWAYS_FATAL_IF(recipient == nullptr,
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"linkToDeath(): recipient must be non-nullptr");
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{
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std::lock_guard<std::mutex> lock(mObituariesLock);
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mObituaries.push_back(new Obituary(recipient, cookie, flags, this));
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if (!mBase->linkToDeath(mObituaries.back(), 0)) {
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return DEAD_OBJECT;
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}
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}
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return NO_ERROR;
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}
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template <
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typename HINTERFACE,
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typename INTERFACE,
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typename BNINTERFACE>
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status_t H2BConverter<HINTERFACE, INTERFACE, BNINTERFACE>::
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unlinkToDeath(
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const wp<IBinder::DeathRecipient>& recipient,
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void* cookie, uint32_t flags,
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wp<IBinder::DeathRecipient>* outRecipient) {
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std::lock_guard<std::mutex> lock(mObituariesLock);
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for (auto i = mObituaries.begin(); i != mObituaries.end(); ++i) {
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if ((flags = (*i)->flags) && (
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(recipient == (*i)->recipient) ||
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((recipient == nullptr) && (cookie == (*i)->cookie)))) {
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if (outRecipient != nullptr) {
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*outRecipient = (*i)->recipient;
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}
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bool success = mBase->unlinkToDeath(*i);
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mObituaries.erase(i);
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return success ? NO_ERROR : DEAD_OBJECT;
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}
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}
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return NAME_NOT_FOUND;
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}
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} // namespace camerahybrid
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} // namespace android
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#endif // ANDROID_CAMERA_HYBRIDINTERFACE_H
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