1 /* 2 * Copyright (C) 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 BINDING_AAUDIOSERVICEDEFINITIONS_H 18 #define BINDING_AAUDIOSERVICEDEFINITIONS_H 19 20 #include <stdint.h> 21 #include <utils/RefBase.h> 22 #include <binder/TextOutput.h> 23 #include <binder/IInterface.h> 24 25 #include <aaudio/AAudio.h> 26 27 using android::NO_ERROR; 28 using android::IBinder; 29 30 namespace android { 31 32 enum aaudio_commands_t { 33 OPEN_STREAM = IBinder::FIRST_CALL_TRANSACTION, 34 CLOSE_STREAM, 35 GET_STREAM_DESCRIPTION, 36 START_STREAM, 37 PAUSE_STREAM, 38 STOP_STREAM, 39 FLUSH_STREAM, 40 REGISTER_AUDIO_THREAD, 41 UNREGISTER_AUDIO_THREAD 42 }; 43 44 } // namespace android 45 46 namespace aaudio { 47 48 typedef int32_t aaudio_handle_t; 49 50 #define AAUDIO_HANDLE_INVALID ((aaudio_handle_t) -1) 51 52 // This must be a fixed width so it can be in shared memory. 53 enum RingbufferFlags : uint32_t { 54 NONE = 0, 55 RATE_ISOCHRONOUS = 0x0001, 56 RATE_ASYNCHRONOUS = 0x0002, 57 COHERENCY_DMA = 0x0004, 58 COHERENCY_ACQUIRE_RELEASE = 0x0008, 59 COHERENCY_AUTO = 0x0010, 60 }; 61 62 // This is not passed through Binder. 63 // Client side code will convert Binder data and fill this descriptor. 64 typedef struct RingBufferDescriptor_s { 65 uint8_t* dataAddress; // offset from read or write block 66 int64_t* writeCounterAddress; 67 int64_t* readCounterAddress; 68 int32_t bytesPerFrame; // index is in frames 69 int32_t framesPerBurst; // for ISOCHRONOUS queues 70 int32_t capacityInFrames; // zero if unused 71 RingbufferFlags flags; 72 } RingBufferDescriptor; 73 74 // This is not passed through Binder. 75 // Client side code will convert Binder data and fill this descriptor. 76 typedef struct EndpointDescriptor_s { 77 // Set capacityInFrames to zero if Queue is unused. 78 RingBufferDescriptor upMessageQueueDescriptor; // server to client 79 RingBufferDescriptor downMessageQueueDescriptor; // client to server 80 RingBufferDescriptor dataQueueDescriptor; // playback or capture 81 } EndpointDescriptor; 82 83 } // namespace aaudio 84 85 #endif //BINDING_AAUDIOSERVICEDEFINITIONS_H 86
