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
getCblk() const45 virtual sp<IMemory> getCblk() const
46 {
47 Parcel data, reply;
48 sp<IMemory> cblk;
49 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
50 status_t status = remote()->transact(GET_CBLK, data, &reply);
51 if (status == NO_ERROR) {
52 cblk = interface_cast<IMemory>(reply.readStrongBinder());
53 }
54 return cblk;
55 }
56
start(int event,int triggerSession)57 virtual status_t start(int /*AudioSystem::sync_event_t*/ event, int triggerSession)
58 {
59 Parcel data, reply;
60 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
61 data.writeInt32(event);
62 data.writeInt32(triggerSession);
63 status_t status = remote()->transact(START, data, &reply);
64 if (status == NO_ERROR) {
65 status = reply.readInt32();
66 } else {
67 ALOGW("start() error: %s", strerror(-status));
68 }
69 return status;
70 }
71
stop()72 virtual void stop()
73 {
74 Parcel data, reply;
75 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
76 remote()->transact(STOP, data, &reply);
77 }
78
79 };
80
81 IMPLEMENT_META_INTERFACE(AudioRecord, "android.media.IAudioRecord");
82
83 // ----------------------------------------------------------------------
84
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)85 status_t BnAudioRecord::onTransact(
86 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
87 {
88 switch (code) {
89 case GET_CBLK: {
90 CHECK_INTERFACE(IAudioRecord, data, reply);
91 reply->writeStrongBinder(getCblk()->asBinder());
92 return NO_ERROR;
93 } break;
94 case START: {
95 CHECK_INTERFACE(IAudioRecord, data, reply);
96 int /*AudioSystem::sync_event_t*/ event = data.readInt32();
97 int triggerSession = data.readInt32();
98 reply->writeInt32(start(event, triggerSession));
99 return NO_ERROR;
100 } break;
101 case STOP: {
102 CHECK_INTERFACE(IAudioRecord, data, reply);
103 stop();
104 return NO_ERROR;
105 } break;
106 default:
107 return BBinder::onTransact(code, data, reply, flags);
108 }
109 }
110
111 }; // namespace android
112