1 /*
2 **
3 ** Copyright 2007, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 ** http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18 #define LOG_TAG "IAudioRecord"
19 //#define LOG_NDEBUG 0
20 #include <utils/Log.h>
21
22 #include <stdint.h>
23 #include <sys/types.h>
24
25 #include <binder/Parcel.h>
26
27 #include <media/IAudioRecord.h>
28
29 namespace android {
30
31 enum {
32 GET_CBLK = IBinder::FIRST_CALL_TRANSACTION,
33 START,
34 STOP
35 };
36
37 class BpAudioRecord : public BpInterface<IAudioRecord>
38 {
39 public:
BpAudioRecord(const sp<IBinder> & impl)40 BpAudioRecord(const sp<IBinder>& impl)
41 : BpInterface<IAudioRecord>(impl)
42 {
43 }
44
start(int event,int triggerSession)45 virtual status_t start(int event, int triggerSession)
46 {
47 Parcel data, reply;
48 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
49 data.writeInt32(event);
50 data.writeInt32(triggerSession);
51 status_t status = remote()->transact(START, data, &reply);
52 if (status == NO_ERROR) {
53 status = reply.readInt32();
54 } else {
55 ALOGW("start() error: %s", strerror(-status));
56 }
57 return status;
58 }
59
stop()60 virtual void stop()
61 {
62 Parcel data, reply;
63 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
64 remote()->transact(STOP, data, &reply);
65 }
66
getCblk() const67 virtual sp<IMemory> getCblk() const
68 {
69 Parcel data, reply;
70 sp<IMemory> cblk;
71 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
72 status_t status = remote()->transact(GET_CBLK, data, &reply);
73 if (status == NO_ERROR) {
74 cblk = interface_cast<IMemory>(reply.readStrongBinder());
75 }
76 return cblk;
77 }
78 };
79
80 IMPLEMENT_META_INTERFACE(AudioRecord, "android.media.IAudioRecord");
81
82 // ----------------------------------------------------------------------
83
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)84 status_t BnAudioRecord::onTransact(
85 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
86 {
87 switch (code) {
88 case GET_CBLK: {
89 CHECK_INTERFACE(IAudioRecord, data, reply);
90 reply->writeStrongBinder(getCblk()->asBinder());
91 return NO_ERROR;
92 } break;
93 case START: {
94 CHECK_INTERFACE(IAudioRecord, data, reply);
95 int event = data.readInt32();
96 int triggerSession = data.readInt32();
97 reply->writeInt32(start(event, triggerSession));
98 return NO_ERROR;
99 } break;
100 case STOP: {
101 CHECK_INTERFACE(IAudioRecord, data, reply);
102 stop();
103 return NO_ERROR;
104 } break;
105 default:
106 return BBinder::onTransact(code, data, reply, flags);
107 }
108 }
109
110 }; // namespace android
111