1 /*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 //#define LOG_NDEBUG 0
18 #define LOG_TAG "IStreamSource"
19 #include <utils/Log.h>
20
21 #include <media/IStreamSource.h>
22 #include <media/stagefright/foundation/AMessage.h>
23
24 #include <binder/IMemory.h>
25 #include <binder/Parcel.h>
26
27 namespace android {
28
29 // static
30 const char *const IStreamListener::kKeyResumeAtPTS = "resume-at-PTS";
31
32 // static
33 const char *const IStreamListener::kKeyFormatChange = "format-change";
34
35 enum {
36 // IStreamSource
37 SET_LISTENER = IBinder::FIRST_CALL_TRANSACTION,
38 SET_BUFFERS,
39 ON_BUFFER_AVAILABLE,
40
41 // IStreamListener
42 QUEUE_BUFFER,
43 ISSUE_COMMAND,
44 };
45
46 struct BpStreamSource : public BpInterface<IStreamSource> {
BpStreamSourceandroid::BpStreamSource47 BpStreamSource(const sp<IBinder> &impl)
48 : BpInterface<IStreamSource>(impl) {
49 }
50
setListenerandroid::BpStreamSource51 virtual void setListener(const sp<IStreamListener> &listener) {
52 Parcel data, reply;
53 data.writeInterfaceToken(IStreamSource::getInterfaceDescriptor());
54 data.writeStrongBinder(listener->asBinder());
55 remote()->transact(SET_LISTENER, data, &reply);
56 }
57
setBuffersandroid::BpStreamSource58 virtual void setBuffers(const Vector<sp<IMemory> > &buffers) {
59 Parcel data, reply;
60 data.writeInterfaceToken(IStreamSource::getInterfaceDescriptor());
61 data.writeInt32(static_cast<int32_t>(buffers.size()));
62 for (size_t i = 0; i < buffers.size(); ++i) {
63 data.writeStrongBinder(buffers.itemAt(i)->asBinder());
64 }
65 remote()->transact(SET_BUFFERS, data, &reply);
66 }
67
onBufferAvailableandroid::BpStreamSource68 virtual void onBufferAvailable(size_t index) {
69 Parcel data, reply;
70 data.writeInterfaceToken(IStreamSource::getInterfaceDescriptor());
71 data.writeInt32(static_cast<int32_t>(index));
72 remote()->transact(
73 ON_BUFFER_AVAILABLE, data, &reply, IBinder::FLAG_ONEWAY);
74 }
75 };
76
77 IMPLEMENT_META_INTERFACE(StreamSource, "android.hardware.IStreamSource");
78
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)79 status_t BnStreamSource::onTransact(
80 uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
81 switch (code) {
82 case SET_LISTENER:
83 {
84 CHECK_INTERFACE(IStreamSource, data, reply);
85 setListener(
86 interface_cast<IStreamListener>(data.readStrongBinder()));
87 break;
88 }
89
90 case SET_BUFFERS:
91 {
92 CHECK_INTERFACE(IStreamSource, data, reply);
93 size_t n = static_cast<size_t>(data.readInt32());
94 Vector<sp<IMemory> > buffers;
95 for (size_t i = 0; i < n; ++i) {
96 sp<IMemory> mem =
97 interface_cast<IMemory>(data.readStrongBinder());
98
99 buffers.push(mem);
100 }
101 setBuffers(buffers);
102 break;
103 }
104
105 case ON_BUFFER_AVAILABLE:
106 {
107 CHECK_INTERFACE(IStreamSource, data, reply);
108 onBufferAvailable(static_cast<size_t>(data.readInt32()));
109 break;
110 }
111
112 default:
113 return BBinder::onTransact(code, data, reply, flags);
114 }
115
116 return OK;
117 }
118
119 ////////////////////////////////////////////////////////////////////////////////
120
121 struct BpStreamListener : public BpInterface<IStreamListener> {
BpStreamListenerandroid::BpStreamListener122 BpStreamListener(const sp<IBinder> &impl)
123 : BpInterface<IStreamListener>(impl) {
124 }
125
queueBufferandroid::BpStreamListener126 virtual void queueBuffer(size_t index, size_t size) {
127 Parcel data, reply;
128 data.writeInterfaceToken(IStreamListener::getInterfaceDescriptor());
129 data.writeInt32(static_cast<int32_t>(index));
130 data.writeInt32(static_cast<int32_t>(size));
131
132 remote()->transact(QUEUE_BUFFER, data, &reply, IBinder::FLAG_ONEWAY);
133 }
134
issueCommandandroid::BpStreamListener135 virtual void issueCommand(
136 Command cmd, bool synchronous, const sp<AMessage> &msg) {
137 Parcel data, reply;
138 data.writeInterfaceToken(IStreamListener::getInterfaceDescriptor());
139 data.writeInt32(static_cast<int32_t>(cmd));
140 data.writeInt32(static_cast<int32_t>(synchronous));
141
142 if (msg != NULL) {
143 data.writeInt32(1);
144 msg->writeToParcel(&data);
145 } else {
146 data.writeInt32(0);
147 }
148
149 remote()->transact(ISSUE_COMMAND, data, &reply, IBinder::FLAG_ONEWAY);
150 }
151 };
152
153 IMPLEMENT_META_INTERFACE(StreamListener, "android.hardware.IStreamListener");
154
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)155 status_t BnStreamListener::onTransact(
156 uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
157 switch (code) {
158 case QUEUE_BUFFER:
159 {
160 CHECK_INTERFACE(IStreamListener, data, reply);
161 size_t index = static_cast<size_t>(data.readInt32());
162 size_t size = static_cast<size_t>(data.readInt32());
163
164 queueBuffer(index, size);
165 break;
166 }
167
168 case ISSUE_COMMAND:
169 {
170 CHECK_INTERFACE(IStreamListener, data, reply);
171 Command cmd = static_cast<Command>(data.readInt32());
172
173 bool synchronous = static_cast<bool>(data.readInt32());
174
175 sp<AMessage> msg;
176
177 if (data.readInt32()) {
178 msg = AMessage::FromParcel(data);
179 }
180
181 issueCommand(cmd, synchronous, msg);
182 break;
183 }
184
185 default:
186 return BBinder::onTransact(code, data, reply, flags);
187 }
188
189 return OK;
190 }
191
192 } // namespace android
193