| /* |
| * Copyright (C) 2017 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_AAUDIO_AAUDIO_CLIENT_TRACKER_H |
| #define ANDROID_AAUDIO_AAUDIO_CLIENT_TRACKER_H |
| |
| #include <map> |
| #include <mutex> |
| #include <set> |
| |
| #include <utils/Singleton.h> |
| |
| #include <aaudio/AAudio.h> |
| #include "binding/IAAudioClient.h" |
| #include "AAudioService.h" |
| |
| namespace aaudio { |
| |
| class AAudioClientTracker : public android::Singleton<AAudioClientTracker>{ |
| public: |
| AAudioClientTracker(); |
| ~AAudioClientTracker() = default; |
| |
| /** |
| * Returns information about the state of the this class. |
| * |
| * Will attempt to get the object lock, but will proceed |
| * even if it cannot. |
| * |
| * Each line of information ends with a newline. |
| * |
| * @return a string with useful information |
| */ |
| std::string dump() const; |
| |
| aaudio_result_t registerClient(pid_t pid, const android::sp<android::IAAudioClient>& client); |
| |
| void unregisterClient(pid_t pid); |
| |
| int32_t getStreamCount(pid_t pid); |
| |
| aaudio_result_t registerClientStream(pid_t pid, |
| android::sp<AAudioServiceStreamBase> serviceStream); |
| |
| aaudio_result_t unregisterClientStream(pid_t pid, |
| android::sp<AAudioServiceStreamBase> serviceStream); |
| |
| /** |
| * Specify whether a process is allowed to create an EXCLUSIVE MMAP stream. |
| * @param pid |
| * @param enabled |
| */ |
| void setExclusiveEnabled(pid_t pid, bool enabled); |
| |
| bool isExclusiveEnabled(pid_t pid); |
| |
| android::AAudioService *getAAudioService() const { |
| return mAAudioService; |
| } |
| |
| void setAAudioService(android::AAudioService *aaudioService) { |
| mAAudioService = aaudioService; |
| } |
| |
| private: |
| |
| /** |
| * One per process. |
| */ |
| class NotificationClient : public IBinder::DeathRecipient { |
| public: |
| NotificationClient(pid_t pid, const android::sp<IBinder>& binder); |
| virtual ~NotificationClient(); |
| |
| int32_t getStreamCount(); |
| |
| std::string dump() const; |
| |
| aaudio_result_t registerClientStream(android::sp<AAudioServiceStreamBase> serviceStream); |
| |
| aaudio_result_t unregisterClientStream(android::sp<AAudioServiceStreamBase> serviceStream); |
| |
| void setExclusiveEnabled(bool enabled) { |
| mExclusiveEnabled = enabled; |
| } |
| |
| bool isExclusiveEnabled() { |
| return mExclusiveEnabled; |
| } |
| |
| // IBinder::DeathRecipient |
| virtual void binderDied(const android::wp<IBinder>& who); |
| |
| private: |
| mutable std::mutex mLock; |
| const pid_t mProcessId; |
| std::set<android::sp<AAudioServiceStreamBase>> mStreams; |
| // hold onto binder to receive death notifications |
| android::sp<IBinder> mBinder; |
| bool mExclusiveEnabled = true; |
| }; |
| |
| // This must be called under mLock |
| android::sp<NotificationClient> getNotificationClient_l(pid_t pid); |
| |
| mutable std::mutex mLock; |
| std::map<pid_t, android::sp<NotificationClient>> mNotificationClients; |
| android::AAudioService *mAAudioService = nullptr; |
| }; |
| |
| } /* namespace aaudio */ |
| |
| #endif //ANDROID_AAUDIO_AAUDIO_CLIENT_TRACKER_H |