NuPlayerSource.h revision fab5ad9331de20b82b02aac4bc73cccf7054fd38 
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 NUPLAYER_SOURCE_H_
18
19#define NUPLAYER_SOURCE_H_
20
21#include "NuPlayer.h"
22
23#include <media/stagefright/foundation/AMessage.h>
24#include <media/stagefright/MetaData.h>
25#include <media/mediaplayer.h>
26#include <utils/Vector.h>
27
28namespace android {
29
30struct ABuffer;
31struct MediaBuffer;
32
33struct NuPlayer::Source : public AHandler {
34    enum Flags {
35        FLAG_CAN_PAUSE          = 1,
36        FLAG_CAN_SEEK_BACKWARD  = 2,  // the "10 sec back button"
37        FLAG_CAN_SEEK_FORWARD   = 4,  // the "10 sec forward button"
38        FLAG_CAN_SEEK           = 8,  // the "seek bar"
39        FLAG_DYNAMIC_DURATION   = 16,
40        FLAG_SECURE             = 32,
41    };
42
43    enum {
44        kWhatPrepared,
45        kWhatFlagsChanged,
46        kWhatVideoSizeChanged,
47        kWhatBufferingUpdate,
48        kWhatBufferingStart,
49        kWhatBufferingEnd,
50        kWhatSubtitleData,
51        kWhatTimedTextData,
52        kWhatQueueDecoderShutdown,
53        kWhatDrmNoLicense,
54    };
55
56    // The provides message is used to notify the player about various
57    // events.
58    Source(const sp<AMessage> &notify)
59        : mNotify(notify) {
60    }
61
62    virtual void prepareAsync() = 0;
63
64    virtual void start() = 0;
65    virtual void stop() {}
66    virtual void pause() {}
67    virtual void resume() {}
68
69    // Explicitly disconnect the underling data source
70    virtual void disconnect() {}
71
72    // Returns OK iff more data was available,
73    // an error or ERROR_END_OF_STREAM if not.
74    virtual status_t feedMoreTSData() = 0;
75
76    virtual sp<AMessage> getFormat(bool audio);
77    virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
78    virtual sp<MetaData> getFileFormatMeta() const { return NULL; }
79
80    virtual status_t dequeueAccessUnit(
81            bool audio, sp<ABuffer> *accessUnit) = 0;
82
83    virtual status_t getDuration(int64_t * /* durationUs */) {
84        return INVALID_OPERATION;
85    }
86
87    virtual size_t getTrackCount() const {
88        return 0;
89    }
90
91    virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const {
92        return NULL;
93    }
94
95    virtual ssize_t getSelectedTrack(media_track_type /* type */) const {
96        return INVALID_OPERATION;
97    }
98
99    virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */, int64_t /* timeUs*/) {
100        return INVALID_OPERATION;
101    }
102
103    virtual status_t seekTo(int64_t /* seekTimeUs */) {
104        return INVALID_OPERATION;
105    }
106
107    virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) {
108        return INVALID_OPERATION;
109    }
110
111    virtual bool isRealTime() const {
112        return false;
113    }
114
115protected:
116    virtual ~Source() {}
117
118    virtual void onMessageReceived(const sp<AMessage> &msg);
119
120    sp<AMessage> dupNotify() const { return mNotify->dup(); }
121
122    void notifyFlagsChanged(uint32_t flags);
123    void notifyVideoSizeChanged(const sp<AMessage> &format = NULL);
124    void notifyPrepared(status_t err = OK);
125
126private:
127    sp<AMessage> mNotify;
128
129    DISALLOW_EVIL_CONSTRUCTORS(Source);
130};
131
132}  // namespace android
133
134#endif  // NUPLAYER_SOURCE_H_
135
136