MetadataRetrieverClient.h revision 7562408b2261d38415453378b6188f74fda99d88 
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_MEDIAMETADATARETRIEVERSERVICE_H
19#define ANDROID_MEDIAMETADATARETRIEVERSERVICE_H
20
21#include <utils.h>
22#include <utils/KeyedVector.h>
23#include <binder/IMemory.h>
24
25#include <media/MediaMetadataRetrieverInterface.h>
26
27
28namespace android {
29
30class IMediaPlayerService;
31class MemoryDealer;
32
33class MetadataRetrieverClient : public BnMediaMetadataRetriever
34{
35public:
36    MetadataRetrieverClient(const sp<IMediaPlayerService>& service, pid_t pid, int32_t connId);
37
38    // Implements IMediaMetadataRetriever interface
39    // These methods are called in IMediaMetadataRetriever.cpp?
40    virtual void                    disconnect();
41    virtual status_t                setDataSource(const char *url);
42    virtual status_t                setDataSource(int fd, int64_t offset, int64_t length);
43    virtual status_t                setMode(int mode);
44    virtual status_t                getMode(int* mode) const;
45    virtual sp<IMemory>             captureFrame();
46    virtual sp<IMemory>             extractAlbumArt();
47    virtual const char*             extractMetadata(int keyCode);
48
49    virtual status_t                dump(int fd, const Vector<String16>& args) const;
50
51private:
52    friend class MediaPlayerService;
53
54    explicit MetadataRetrieverClient(pid_t pid);
55    virtual ~MetadataRetrieverClient();
56
57    mutable Mutex                          mLock;
58    sp<MediaMetadataRetrieverBase>         mRetriever;
59    pid_t                                  mPid;
60
61    // Keep the shared memory copy of album art and capture frame (for thumbnail)
62    sp<MemoryDealer>                       mAlbumArtDealer;
63    sp<MemoryDealer>                       mThumbnailDealer;
64    sp<IMemory>                            mAlbumArt;
65    sp<IMemory>                            mThumbnail;
66};
67
68}; // namespace android
69
70#endif // ANDROID_MEDIAMETADATARETRIEVERSERVICE_H
71
72