1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_HARDWARE_MEDIA_BUFFERPOOL_V1_0_BUFFERPOOLCLIENT_H 18 #define ANDROID_HARDWARE_MEDIA_BUFFERPOOL_V1_0_BUFFERPOOLCLIENT_H 19 20 #include <memory> 21 #include <android/hardware/media/bufferpool/1.0/IAccessor.h> 22 #include <android/hardware/media/bufferpool/1.0/IConnection.h> 23 #include <bufferpool/BufferPoolTypes.h> 24 #include <cutils/native_handle.h> 25 #include "Accessor.h" 26 27 namespace android { 28 namespace hardware { 29 namespace media { 30 namespace bufferpool { 31 namespace V1_0 { 32 namespace implementation { 33 34 using ::android::hardware::media::bufferpool::V1_0::IAccessor; 35 using ::android::hardware::media::bufferpool::V1_0::IConnection; 36 using ::android::hardware::media::bufferpool::V1_0::ResultStatus; 37 using ::android::sp; 38 39 /** 40 * A buffer pool client for a buffer pool. For a specific buffer pool, at most 41 * one buffer pool client exists per process. This class will not be exposed 42 * outside. A buffer pool client will be used via ClientManager. 43 */ 44 class BufferPoolClient { 45 public: 46 /** 47 * Creates a buffer pool client from a local buffer pool 48 * (via ClientManager#create). 49 */ 50 explicit BufferPoolClient(const sp<Accessor> &accessor); 51 52 /** 53 * Creates a buffer pool client from a remote buffer pool 54 * (via ClientManager#registerSender). 55 * Note: A buffer pool client created with remote buffer pool cannot 56 * allocate a buffer. 57 */ 58 explicit BufferPoolClient(const sp<IAccessor> &accessor); 59 60 /** Destructs a buffer pool client. */ 61 ~BufferPoolClient(); 62 63 private: 64 bool isValid(); 65 66 bool isLocal(); 67 68 bool isActive(int64_t *lastTransactionUs, bool clearCache); 69 70 ConnectionId getConnectionId(); 71 72 ResultStatus getAccessor(sp<IAccessor> *accessor); 73 74 ResultStatus allocate(const std::vector<uint8_t> ¶ms, 75 native_handle_t **handle, 76 std::shared_ptr<BufferPoolData> *buffer); 77 78 ResultStatus receive(TransactionId transactionId, 79 BufferId bufferId, 80 int64_t timestampUs, 81 native_handle_t **handle, 82 std::shared_ptr<BufferPoolData> *buffer); 83 84 ResultStatus postSend(ConnectionId receiver, 85 const std::shared_ptr<BufferPoolData> &buffer, 86 TransactionId *transactionId, 87 int64_t *timestampUs); 88 89 class Impl; 90 std::shared_ptr<Impl> mImpl; 91 92 friend struct ClientManager; 93 }; 94 95 } // namespace implementation 96 } // namespace V1_0 97 } // namespace bufferpool 98 } // namespace media 99 } // namespace hardware 100 } // namespace android 101 102 #endif // ANDROID_HARDWARE_MEDIA_BUFFERPOOL_V1_0_BUFFERPOOLCLIENT_H 103