1 /*
2 * Copyright (C) 2017 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 #define LOG_TAG "AAudio"
18 //#define LOG_NDEBUG 0
19 #include <utils/Log.h>
20
21 #include <aaudio/AAudio.h>
22
23 #include "binding/AAudioBinderClient.h"
24 #include "binding/AAudioServiceDefinitions.h"
25 #include "binding/IAAudioClient.h"
26 #include "utility/AAudioUtilities.h"
27
28 namespace android {
29
30 using aaudio::aaudio_handle_t;
31
32 /**
33 * This is used by the AAudio Service to talk to an AAudio Client.
34 *
35 * The order of parameters in the Parcels must match with code in AAudioClient.cpp.
36 */
37 class BpAAudioClient : public BpInterface<IAAudioClient>
38 {
39 public:
BpAAudioClient(const sp<IBinder> & impl)40 explicit BpAAudioClient(const sp<IBinder>& impl)
41 : BpInterface<IAAudioClient>(impl)
42 {
43 }
44
onStreamChange(aaudio_handle_t handle,int32_t opcode,int32_t value)45 void onStreamChange(aaudio_handle_t handle, int32_t opcode, int32_t value) override {
46 Parcel data, reply;
47 data.writeInterfaceToken(IAAudioClient::getInterfaceDescriptor());
48 data.writeInt32(handle);
49 data.writeInt32(opcode);
50 data.writeInt32(value);
51 remote()->transact(ON_STREAM_CHANGE, data, &reply, IBinder::FLAG_ONEWAY);
52 }
53
54 };
55
56 // Implement an interface to the service.
57 IMPLEMENT_META_INTERFACE(AAudioClient, "IAAudioClient");
58
59 // The order of parameters in the Parcels must match with code in BpAAudioClient
60
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)61 status_t BnAAudioClient::onTransact(uint32_t code, const Parcel& data,
62 Parcel* reply, uint32_t flags) {
63 aaudio_handle_t streamHandle;
64 int32_t opcode = 0;
65 int32_t value = 0;
66 ALOGV("BnAAudioClient::onTransact(%u) %u", code, flags);
67
68 switch(code) {
69 case ON_STREAM_CHANGE: {
70 CHECK_INTERFACE(IAAudioClient, data, reply);
71 data.readInt32(&streamHandle);
72 data.readInt32(&opcode);
73 data.readInt32(&value);
74 onStreamChange(streamHandle, opcode, value);
75 ALOGD("BnAAudioClient onStreamChange(%x, %d, %d)", streamHandle, opcode, value);
76 return NO_ERROR;
77 } break;
78
79 default:
80 // ALOGW("BnAAudioClient::onTransact not handled %u", code);
81 return BBinder::onTransact(code, data, reply, flags);
82 }
83 }
84
85 } /* namespace android */
86