IAAudioClient.cpp revision 11e8d335b1da528ee771b19b63df23ae6fd52f41 
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
28namespace android {
29
30using 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 */
37class BpAAudioClient : public BpInterface<IAAudioClient>
38{
39public:
40    explicit BpAAudioClient(const sp<IBinder>& impl)
41        : BpInterface<IAAudioClient>(impl)
42    {
43    }
44
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.
57IMPLEMENT_META_INTERFACE(AAudioClient, "IAAudioClient");
58
59// The order of parameters in the Parcels must match with code in BpAAudioClient
60
61status_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