1 /* 2 * Copyright 2016 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_BINDING_AUDIO_ENDPOINT_PARCELABLE_H 18 #define ANDROID_BINDING_AUDIO_ENDPOINT_PARCELABLE_H 19 20 #include <stdint.h> 21 22 //#include <sys/mman.h> 23 #include <android-base/unique_fd.h> 24 #include <binder/Parcel.h> 25 #include <binder/Parcelable.h> 26 27 #include "binding/AAudioServiceDefinitions.h" 28 #include "binding/RingBufferParcelable.h" 29 30 using android::status_t; 31 using android::Parcel; 32 using android::Parcelable; 33 34 namespace aaudio { 35 36 /** 37 * Container for information about the message queues plus 38 * general stream information needed by AAudio clients. 39 * It contains no addresses, just sizes, offsets and file descriptors for 40 * shared memory that can be passed through Binder. 41 */ 42 class AudioEndpointParcelable : public Parcelable { 43 public: 44 AudioEndpointParcelable(); 45 virtual ~AudioEndpointParcelable(); 46 47 /** 48 * Add the file descriptor to the table. 49 * @return index in table or negative error 50 */ 51 int32_t addFileDescriptor(const android::base::unique_fd& fd, int32_t sizeInBytes); 52 53 virtual status_t writeToParcel(Parcel* parcel) const override; 54 55 virtual status_t readFromParcel(const Parcel* parcel) override; 56 57 aaudio_result_t resolve(EndpointDescriptor *descriptor); 58 59 aaudio_result_t close(); 60 61 void dump(); 62 63 public: // TODO add getters 64 // Set capacityInFrames to zero if Queue is unused. 65 RingBufferParcelable mUpMessageQueueParcelable; // server to client 66 RingBufferParcelable mDownMessageQueueParcelable; // to server 67 RingBufferParcelable mUpDataQueueParcelable; // eg. record, could share same queue 68 RingBufferParcelable mDownDataQueueParcelable; // eg. playback 69 70 private: 71 aaudio_result_t validate() const; 72 73 int32_t mNumSharedMemories = 0; 74 SharedMemoryParcelable mSharedMemories[MAX_SHARED_MEMORIES]; 75 }; 76 77 } /* namespace aaudio */ 78 79 #endif //ANDROID_BINDING_AUDIO_ENDPOINT_PARCELABLE_H 80
