MetadataRetrieverClient.h revision 7f7d52ac18dfc3c6d8f6267dad29306613e9bd0e 
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/Log.h>
22#include <utils/threads.h>
23#include <utils/List.h>
24#include <utils/Errors.h>
25#include <utils/KeyedVector.h>
26#include <binder/IMemory.h>
27
28#include <media/MediaMetadataRetrieverInterface.h>
29
30
31namespace android {
32
33class IMediaPlayerService;
34class MemoryDealer;
35
36class MetadataRetrieverClient : public BnMediaMetadataRetriever
37{
38public:
39    MetadataRetrieverClient(const sp<IMediaPlayerService>& service, pid_t pid, int32_t connId);
40
41    // Implements IMediaMetadataRetriever interface
42    // These methods are called in IMediaMetadataRetriever.cpp?
43    virtual void                    disconnect();
44    virtual status_t                setDataSource(const char *url);
45    virtual status_t                setDataSource(int fd, int64_t offset, int64_t length);
46    virtual sp<IMemory>             getFrameAtTime(int64_t timeUs, int option);
47    virtual sp<IMemory>             extractAlbumArt();
48    virtual const char*             extractMetadata(int keyCode);
49
50    virtual status_t                dump(int fd, const Vector<String16>& args) const;
51
52private:
53    friend class MediaPlayerService;
54
55    explicit MetadataRetrieverClient(pid_t pid);
56    virtual ~MetadataRetrieverClient();
57
58    mutable Mutex                          mLock;
59    sp<MediaMetadataRetrieverBase>         mRetriever;
60    pid_t                                  mPid;
61
62    // Keep the shared memory copy of album art and capture frame (for thumbnail)
63    sp<IMemory>                            mAlbumArt;
64    sp<IMemory>                            mThumbnail;
65};
66
67}; // namespace android
68
69#endif // ANDROID_MEDIAMETADATARETRIEVERSERVICE_H
70
71