1 /*
2 **
3 ** Copyright 2010, 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_NDEBUG 0
19 #define LOG_TAG "IEffect"
20 #include <utils/Log.h>
21 #include <stdint.h>
22 #include <sys/types.h>
23 #include <binder/Parcel.h>
24 #include <media/IEffect.h>
25
26 namespace android {
27
28 enum {
29 ENABLE = IBinder::FIRST_CALL_TRANSACTION,
30 DISABLE,
31 COMMAND,
32 DISCONNECT,
33 GET_CBLK
34 };
35
36 class BpEffect: public BpInterface<IEffect>
37 {
38 public:
BpEffect(const sp<IBinder> & impl)39 BpEffect(const sp<IBinder>& impl)
40 : BpInterface<IEffect>(impl)
41 {
42 }
43
enable()44 status_t enable()
45 {
46 LOGV("enable");
47 Parcel data, reply;
48 data.writeInterfaceToken(IEffect::getInterfaceDescriptor());
49 remote()->transact(ENABLE, data, &reply);
50 return reply.readInt32();
51 }
52
disable()53 status_t disable()
54 {
55 LOGV("disable");
56 Parcel data, reply;
57 data.writeInterfaceToken(IEffect::getInterfaceDescriptor());
58 remote()->transact(DISABLE, data, &reply);
59 return reply.readInt32();
60 }
61
command(uint32_t cmdCode,uint32_t cmdSize,void * pCmdData,uint32_t * pReplySize,void * pReplyData)62 status_t command(uint32_t cmdCode,
63 uint32_t cmdSize,
64 void *pCmdData,
65 uint32_t *pReplySize,
66 void *pReplyData)
67 {
68 LOGV("command");
69 Parcel data, reply;
70 data.writeInterfaceToken(IEffect::getInterfaceDescriptor());
71 data.writeInt32(cmdCode);
72 int size = cmdSize;
73 if (pCmdData == NULL) {
74 size = 0;
75 }
76 data.writeInt32(size);
77 if (size) {
78 data.write(pCmdData, size);
79 }
80 if (pReplySize == NULL) {
81 size = 0;
82 } else {
83 size = *pReplySize;
84 }
85 data.writeInt32(size);
86 remote()->transact(COMMAND, data, &reply);
87 status_t status = reply.readInt32();
88 size = reply.readInt32();
89 if (size != 0 && pReplyData != NULL && pReplySize != NULL) {
90 reply.read(pReplyData, size);
91 *pReplySize = size;
92 }
93 return status;
94 }
95
disconnect()96 void disconnect()
97 {
98 LOGV("disconnect");
99 Parcel data, reply;
100 data.writeInterfaceToken(IEffect::getInterfaceDescriptor());
101 remote()->transact(DISCONNECT, data, &reply);
102 return;
103 }
104
getCblk() const105 virtual sp<IMemory> getCblk() const
106 {
107 Parcel data, reply;
108 sp<IMemory> cblk;
109 data.writeInterfaceToken(IEffect::getInterfaceDescriptor());
110 status_t status = remote()->transact(GET_CBLK, data, &reply);
111 if (status == NO_ERROR) {
112 cblk = interface_cast<IMemory>(reply.readStrongBinder());
113 }
114 return cblk;
115 }
116 };
117
118 IMPLEMENT_META_INTERFACE(Effect, "android.media.IEffect");
119
120 // ----------------------------------------------------------------------
121
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)122 status_t BnEffect::onTransact(
123 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
124 {
125 switch(code) {
126 case ENABLE: {
127 LOGV("ENABLE");
128 CHECK_INTERFACE(IEffect, data, reply);
129 reply->writeInt32(enable());
130 return NO_ERROR;
131 } break;
132
133 case DISABLE: {
134 LOGV("DISABLE");
135 CHECK_INTERFACE(IEffect, data, reply);
136 reply->writeInt32(disable());
137 return NO_ERROR;
138 } break;
139
140 case COMMAND: {
141 LOGV("COMMAND");
142 CHECK_INTERFACE(IEffect, data, reply);
143 uint32_t cmdCode = data.readInt32();
144 uint32_t cmdSize = data.readInt32();
145 char *cmd = NULL;
146 if (cmdSize) {
147 cmd = (char *)malloc(cmdSize);
148 data.read(cmd, cmdSize);
149 }
150 uint32_t replySize = data.readInt32();
151 uint32_t replySz = replySize;
152 char *resp = NULL;
153 if (replySize) {
154 resp = (char *)malloc(replySize);
155 }
156 status_t status = command(cmdCode, cmdSize, cmd, &replySz, resp);
157 reply->writeInt32(status);
158 if (replySz < replySize) {
159 replySize = replySz;
160 }
161 reply->writeInt32(replySize);
162 if (replySize) {
163 reply->write(resp, replySize);
164 }
165 if (cmd) {
166 free(cmd);
167 }
168 if (resp) {
169 free(resp);
170 }
171 return NO_ERROR;
172 } break;
173
174 case DISCONNECT: {
175 LOGV("DISCONNECT");
176 CHECK_INTERFACE(IEffect, data, reply);
177 disconnect();
178 return NO_ERROR;
179 } break;
180
181 case GET_CBLK: {
182 CHECK_INTERFACE(IEffect, data, reply);
183 reply->writeStrongBinder(getCblk()->asBinder());
184 return NO_ERROR;
185 } break;
186
187 default:
188 return BBinder::onTransact(code, data, reply, flags);
189 }
190 }
191
192 // ----------------------------------------------------------------------------
193
194 }; // namespace android
195
196