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 ALOGV("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 ALOGV("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 ALOGV("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
87 status_t status = remote()->transact(COMMAND, data, &reply);
88 if (status != NO_ERROR) {
89 if (pReplySize != NULL)
90 *pReplySize = 0;
91 return status;
92 }
93
94 status = reply.readInt32();
95 size = reply.readInt32();
96 if (size != 0 && pReplyData != NULL && pReplySize != NULL) {
97 reply.read(pReplyData, size);
98 *pReplySize = size;
99 }
100 return status;
101 }
102
disconnect()103 void disconnect()
104 {
105 ALOGV("disconnect");
106 Parcel data, reply;
107 data.writeInterfaceToken(IEffect::getInterfaceDescriptor());
108 remote()->transact(DISCONNECT, data, &reply);
109 return;
110 }
111
getCblk() const112 virtual sp<IMemory> getCblk() const
113 {
114 Parcel data, reply;
115 sp<IMemory> cblk;
116 data.writeInterfaceToken(IEffect::getInterfaceDescriptor());
117 status_t status = remote()->transact(GET_CBLK, data, &reply);
118 if (status == NO_ERROR) {
119 cblk = interface_cast<IMemory>(reply.readStrongBinder());
120 }
121 return cblk;
122 }
123 };
124
125 IMPLEMENT_META_INTERFACE(Effect, "android.media.IEffect");
126
127 // ----------------------------------------------------------------------
128
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)129 status_t BnEffect::onTransact(
130 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
131 {
132 switch (code) {
133 case ENABLE: {
134 ALOGV("ENABLE");
135 CHECK_INTERFACE(IEffect, data, reply);
136 reply->writeInt32(enable());
137 return NO_ERROR;
138 } break;
139
140 case DISABLE: {
141 ALOGV("DISABLE");
142 CHECK_INTERFACE(IEffect, data, reply);
143 reply->writeInt32(disable());
144 return NO_ERROR;
145 } break;
146
147 case COMMAND: {
148 ALOGV("COMMAND");
149 CHECK_INTERFACE(IEffect, data, reply);
150 uint32_t cmdCode = data.readInt32();
151 uint32_t cmdSize = data.readInt32();
152 char *cmd = NULL;
153 if (cmdSize) {
154 cmd = (char *)malloc(cmdSize);
155 data.read(cmd, cmdSize);
156 }
157 uint32_t replySize = data.readInt32();
158 uint32_t replySz = replySize;
159 char *resp = NULL;
160 if (replySize) {
161 resp = (char *)malloc(replySize);
162 }
163 status_t status = command(cmdCode, cmdSize, cmd, &replySz, resp);
164 reply->writeInt32(status);
165 if (replySz < replySize) {
166 replySize = replySz;
167 }
168 reply->writeInt32(replySize);
169 if (replySize) {
170 reply->write(resp, replySize);
171 }
172 if (cmd) {
173 free(cmd);
174 }
175 if (resp) {
176 free(resp);
177 }
178 return NO_ERROR;
179 } break;
180
181 case DISCONNECT: {
182 ALOGV("DISCONNECT");
183 CHECK_INTERFACE(IEffect, data, reply);
184 disconnect();
185 return NO_ERROR;
186 } break;
187
188 case GET_CBLK: {
189 CHECK_INTERFACE(IEffect, data, reply);
190 reply->writeStrongBinder(getCblk()->asBinder());
191 return NO_ERROR;
192 } break;
193
194 default:
195 return BBinder::onTransact(code, data, reply, flags);
196 }
197 }
198
199 // ----------------------------------------------------------------------------
200
201 }; // namespace android
202