APacketSource.h revision 39ddf8e0f18766f7ba1e3246b774aa6ebd93eea8 
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 A_PACKET_SOURCE_H_
18
19#define A_PACKET_SOURCE_H_
20
21#include <media/stagefright/foundation/ABase.h>
22#include <media/stagefright/MediaSource.h>
23#include <utils/threads.h>
24#include <utils/List.h>
25
26namespace android {
27
28struct ABuffer;
29struct ASessionDescription;
30
31struct APacketSource : public MediaSource {
32    APacketSource(const sp<ASessionDescription> &sessionDesc, size_t index);
33
34    status_t initCheck() const;
35
36    virtual status_t start(MetaData *params = NULL);
37    virtual status_t stop();
38    virtual sp<MetaData> getFormat();
39
40    virtual status_t read(
41            MediaBuffer **buffer, const ReadOptions *options = NULL);
42
43    void queueAccessUnit(const sp<ABuffer> &buffer);
44    void signalEOS(status_t result);
45
46    int64_t getQueuedDuration(bool *eos);
47
48protected:
49    virtual ~APacketSource();
50
51private:
52    status_t mInitCheck;
53
54    Mutex mLock;
55    Condition mCondition;
56
57    sp<MetaData> mFormat;
58    List<sp<ABuffer> > mBuffers;
59    status_t mEOSResult;
60
61    bool mFirstAccessUnit;
62    uint64_t mFirstAccessUnitNTP;
63
64    DISALLOW_EVIL_CONSTRUCTORS(APacketSource);
65};
66
67
68}  // namespace android
69
70#endif  // A_PACKET_SOURCE_H_
71