MediaMetadataRetrieverInterface.h revision f3e80dddd7376aa9deeb27de25e1d50030a2ad98 
1/*
2**
3** Copyright (C) 2008 The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18#ifndef ANDROID_MEDIAMETADATARETRIEVERINTERFACE_H
19#define ANDROID_MEDIAMETADATARETRIEVERINTERFACE_H
20
21#include <utils/RefBase.h>
22#include <media/mediametadataretriever.h>
23#include <media/mediascanner.h>
24#include <private/media/VideoFrame.h>
25
26namespace android {
27
28// Abstract base class
29class MediaMetadataRetrieverBase : public RefBase
30{
31public:
32                        MediaMetadataRetrieverBase() {}
33    virtual             ~MediaMetadataRetrieverBase() {}
34
35    virtual status_t    setDataSource(
36            const char *url,
37            const KeyedVector<String8, String8> *headers = NULL) = 0;
38
39    virtual status_t    setDataSource(int fd, int64_t offset, int64_t length) = 0;
40    virtual VideoFrame* getFrameAtTime(int64_t timeUs, int option) = 0;
41    virtual MediaAlbumArt* extractAlbumArt() = 0;
42    virtual const char* extractMetadata(int keyCode) = 0;
43};
44
45// MediaMetadataRetrieverInterface
46class MediaMetadataRetrieverInterface : public MediaMetadataRetrieverBase
47{
48public:
49    MediaMetadataRetrieverInterface() {}
50
51    virtual             ~MediaMetadataRetrieverInterface() {}
52    virtual VideoFrame* getFrameAtTime(int64_t timeUs, int option) { return NULL; }
53    virtual MediaAlbumArt* extractAlbumArt() { return NULL; }
54    virtual const char* extractMetadata(int keyCode) { return NULL; }
55};
56
57}; // namespace android
58
59#endif // ANDROID_MEDIAMETADATARETRIEVERINTERFACE_H
60