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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 
31 namespace android {
32 
33 struct IMediaHTTPService;
34 class IMediaPlayerService;
35 class MemoryDealer;
36 
37 class MetadataRetrieverClient : public BnMediaMetadataRetriever
38 {
39 public:
40     MetadataRetrieverClient(const sp<IMediaPlayerService>& service, pid_t pid, int32_t connId);
41 
42     // Implements IMediaMetadataRetriever interface
43     // These methods are called in IMediaMetadataRetriever.cpp?
44     virtual void                    disconnect();
45 
46     virtual status_t                setDataSource(
47             const sp<IMediaHTTPService> &httpService,
48             const char *url,
49             const KeyedVector<String8, String8> *headers);
50 
51     virtual status_t                setDataSource(int fd, int64_t offset, int64_t length);
52     virtual sp<IMemory>             getFrameAtTime(int64_t timeUs, int option);
53     virtual sp<IMemory>             extractAlbumArt();
54     virtual const char*             extractMetadata(int keyCode);
55 
56     virtual status_t                dump(int fd, const Vector<String16>& args) const;
57 
58 private:
59     friend class MediaPlayerService;
60 
61     explicit MetadataRetrieverClient(pid_t pid);
62     virtual ~MetadataRetrieverClient();
63 
64     mutable Mutex                          mLock;
65     sp<MediaMetadataRetrieverBase>         mRetriever;
66     pid_t                                  mPid;
67 
68     // Keep the shared memory copy of album art and capture frame (for thumbnail)
69     sp<IMemory>                            mAlbumArt;
70     sp<IMemory>                            mThumbnail;
71 };
72 
73 }; // namespace android
74 
75 #endif // ANDROID_MEDIAMETADATARETRIEVERSERVICE_H
76 
77