IStreamSource.h revision 32f3cefa373cd55e63deda36ca9d07c7fe22eaaf 
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#ifndef ANDROID_ISTREAMSOURCE_H_
18
19#define ANDROID_ISTREAMSOURCE_H_
20
21#include <binder/IInterface.h>
22
23namespace android {
24
25struct AMessage;
26struct IMemory;
27struct IStreamListener;
28
29struct IStreamSource : public IInterface {
30    DECLARE_META_INTERFACE(StreamSource);
31
32    virtual void setListener(const sp<IStreamListener> &listener) = 0;
33    virtual void setBuffers(const Vector<sp<IMemory> > &buffers) = 0;
34
35    virtual void onBufferAvailable(size_t index) = 0;
36};
37
38struct IStreamListener : public IInterface {
39    DECLARE_META_INTERFACE(StreamListener);
40
41    enum Command {
42        EOS,
43        DISCONTINUITY,
44    };
45
46    virtual void queueBuffer(size_t index, size_t size) = 0;
47
48    // When signalling a discontinuity you can optionally
49    // specify an int64_t PTS timestamp in "msg".
50    // If present, rendering of data following the discontinuity
51    // will be suppressed until media time reaches this timestamp.
52    static const char *const kKeyResumeAtPTS;
53
54    virtual void issueCommand(
55            Command cmd, bool synchronous, const sp<AMessage> &msg = NULL) = 0;
56};
57
58////////////////////////////////////////////////////////////////////////////////
59
60struct BnStreamSource : public BnInterface<IStreamSource> {
61    virtual status_t onTransact(
62            uint32_t code, const Parcel &data, Parcel *reply,
63            uint32_t flags = 0);
64};
65
66struct BnStreamListener : public BnInterface<IStreamListener> {
67    virtual status_t onTransact(
68            uint32_t code, const Parcel &data, Parcel *reply,
69            uint32_t flags = 0);
70};
71
72}  // namespace android
73
74#endif  // ANDROID_ISTREAMSOURCE_H_
75