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()45 virtual status_t start()
46 {
47 Parcel data, reply;
48 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
49 status_t status = remote()->transact(START, data, &reply);
50 if (status == NO_ERROR) {
51 status = reply.readInt32();
52 } else {
53 LOGW("start() error: %s", strerror(-status));
54 }
55 return status;
56 }
57
stop()58 virtual void stop()
59 {
60 Parcel data, reply;
61 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
62 remote()->transact(STOP, data, &reply);
63 }
64
getCblk() const65 virtual sp<IMemory> getCblk() const
66 {
67 Parcel data, reply;
68 sp<IMemory> cblk;
69 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
70 status_t status = remote()->transact(GET_CBLK, data, &reply);
71 if (status == NO_ERROR) {
72 cblk = interface_cast<IMemory>(reply.readStrongBinder());
73 }
74 return cblk;
75 }
76 };
77
78 IMPLEMENT_META_INTERFACE(AudioRecord, "android.media.IAudioRecord");
79
80 // ----------------------------------------------------------------------
81
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)82 status_t BnAudioRecord::onTransact(
83 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
84 {
85 switch(code) {
86 case GET_CBLK: {
87 CHECK_INTERFACE(IAudioRecord, data, reply);
88 reply->writeStrongBinder(getCblk()->asBinder());
89 return NO_ERROR;
90 } break;
91 case START: {
92 CHECK_INTERFACE(IAudioRecord, data, reply);
93 reply->writeInt32(start());
94 return NO_ERROR;
95 } break;
96 case STOP: {
97 CHECK_INTERFACE(IAudioRecord, data, reply);
98 stop();
99 return NO_ERROR;
100 } break;
101 default:
102 return BBinder::onTransact(code, data, reply, flags);
103 }
104 }
105
106 }; // namespace android
107
108