IStreamSource.cpp revision d47dfcb5a2e5901c96fc92662cec7aa30f7f8843 
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
27namespace android {
28
29// static
30const char *const IStreamListener::kKeyResumeAtPTS = "resume-at-PTS";
31
32// static
33const char *const IStreamListener::kKeyDiscontinuityMask = "discontinuity-mask";
34
35// static
36const char *const IStreamListener::kKeyMediaTimeUs = "media-time-us";
37
38// static
39const char *const IStreamListener::kKeyRecentMediaTimeUs = "recent-media-time-us";
40
41enum {
42    // IStreamSource
43    SET_LISTENER = IBinder::FIRST_CALL_TRANSACTION,
44    SET_BUFFERS,
45    ON_BUFFER_AVAILABLE,
46    FLAGS,
47
48    // IStreamListener
49    QUEUE_BUFFER,
50    ISSUE_COMMAND,
51};
52
53struct BpStreamSource : public BpInterface<IStreamSource> {
54    BpStreamSource(const sp<IBinder> &impl)
55        : BpInterface<IStreamSource>(impl) {
56    }
57
58    virtual void setListener(const sp<IStreamListener> &listener) {
59        Parcel data, reply;
60        data.writeInterfaceToken(IStreamSource::getInterfaceDescriptor());
61        data.writeStrongBinder(IInterface::asBinder(listener));
62        remote()->transact(SET_LISTENER, data, &reply);
63    }
64
65    virtual void setBuffers(const Vector<sp<IMemory> > &buffers) {
66        Parcel data, reply;
67        data.writeInterfaceToken(IStreamSource::getInterfaceDescriptor());
68        data.writeInt64(static_cast<int64_t>(buffers.size()));
69        for (size_t i = 0; i < buffers.size(); ++i) {
70            data.writeStrongBinder(IInterface::asBinder(buffers.itemAt(i)));
71        }
72        remote()->transact(SET_BUFFERS, data, &reply);
73    }
74
75    virtual void onBufferAvailable(size_t index) {
76        Parcel data, reply;
77        data.writeInterfaceToken(IStreamSource::getInterfaceDescriptor());
78        data.writeInt64(static_cast<int64_t>(index));
79        remote()->transact(
80                ON_BUFFER_AVAILABLE, data, &reply, IBinder::FLAG_ONEWAY);
81    }
82
83    virtual uint32_t flags() const {
84        Parcel data, reply;
85        data.writeInterfaceToken(IStreamSource::getInterfaceDescriptor());
86        remote()->transact(FLAGS, data, &reply);
87
88        return reply.readInt32();
89    }
90};
91
92IMPLEMENT_META_INTERFACE(StreamSource, "android.hardware.IStreamSource");
93
94status_t BnStreamSource::onTransact(
95        uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
96    switch (code) {
97        case SET_LISTENER:
98        {
99            CHECK_INTERFACE(IStreamSource, data, reply);
100            setListener(
101                    interface_cast<IStreamListener>(data.readStrongBinder()));
102            break;
103        }
104
105        case SET_BUFFERS:
106        {
107            CHECK_INTERFACE(IStreamSource, data, reply);
108            size_t n = static_cast<size_t>(data.readInt64());
109            Vector<sp<IMemory> > buffers;
110            for (size_t i = 0; i < n; ++i) {
111                sp<IMemory> mem =
112                    interface_cast<IMemory>(data.readStrongBinder());
113
114                buffers.push(mem);
115            }
116            setBuffers(buffers);
117            break;
118        }
119
120        case ON_BUFFER_AVAILABLE:
121        {
122            CHECK_INTERFACE(IStreamSource, data, reply);
123            onBufferAvailable(static_cast<size_t>(data.readInt64()));
124            break;
125        }
126
127        case FLAGS:
128        {
129            CHECK_INTERFACE(IStreamSource, data, reply);
130            reply->writeInt32(this->flags());
131            break;
132        }
133
134        default:
135            return BBinder::onTransact(code, data, reply, flags);
136    }
137
138    return OK;
139}
140
141////////////////////////////////////////////////////////////////////////////////
142
143struct BpStreamListener : public BpInterface<IStreamListener> {
144    BpStreamListener(const sp<IBinder> &impl)
145        : BpInterface<IStreamListener>(impl) {
146    }
147
148    virtual void queueBuffer(size_t index, size_t size) {
149        Parcel data, reply;
150        data.writeInterfaceToken(IStreamListener::getInterfaceDescriptor());
151        data.writeInt64(static_cast<int64_t>(index));
152        data.writeInt64(static_cast<int64_t>(size));
153
154        remote()->transact(QUEUE_BUFFER, data, &reply, IBinder::FLAG_ONEWAY);
155    }
156
157    virtual void issueCommand(
158            Command cmd, bool synchronous, const sp<AMessage> &msg) {
159        Parcel data, reply;
160        data.writeInterfaceToken(IStreamListener::getInterfaceDescriptor());
161        data.writeInt32(static_cast<int32_t>(cmd));
162        data.writeInt32(static_cast<int32_t>(synchronous));
163
164        if (msg != NULL) {
165            data.writeInt32(1);
166            msg->writeToParcel(&data);
167        } else {
168            data.writeInt32(0);
169        }
170
171        remote()->transact(ISSUE_COMMAND, data, &reply, IBinder::FLAG_ONEWAY);
172    }
173};
174
175IMPLEMENT_META_INTERFACE(StreamListener, "android.hardware.IStreamListener");
176
177status_t BnStreamListener::onTransact(
178        uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
179    switch (code) {
180        case QUEUE_BUFFER:
181        {
182            CHECK_INTERFACE(IStreamListener, data, reply);
183            size_t index = static_cast<size_t>(data.readInt64());
184            size_t size = static_cast<size_t>(data.readInt64());
185
186            queueBuffer(index, size);
187            break;
188        }
189
190        case ISSUE_COMMAND:
191        {
192            CHECK_INTERFACE(IStreamListener, data, reply);
193            Command cmd = static_cast<Command>(data.readInt32());
194
195            bool synchronous = static_cast<bool>(data.readInt32());
196
197            sp<AMessage> msg;
198
199            if (data.readInt32()) {
200                msg = AMessage::FromParcel(data);
201            }
202
203            issueCommand(cmd, synchronous, msg);
204            break;
205        }
206
207        default:
208            return BBinder::onTransact(code, data, reply, flags);
209    }
210
211    return OK;
212}
213
214}  // namespace android
215