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 <private/media/VideoFrame.h> 24 25 namespace android { 26 27 // Abstract base class 28 class MediaMetadataRetrieverBase : public RefBase 29 { 30 public: MediaMetadataRetrieverBase()31 MediaMetadataRetrieverBase() {} ~MediaMetadataRetrieverBase()32 virtual ~MediaMetadataRetrieverBase() {} 33 34 virtual status_t setDataSource( 35 const char *url, 36 const KeyedVector<String8, String8> *headers = NULL) = 0; 37 38 virtual status_t setDataSource(int fd, int64_t offset, int64_t length) = 0; 39 virtual VideoFrame* getFrameAtTime(int64_t timeUs, int option) = 0; 40 virtual MediaAlbumArt* extractAlbumArt() = 0; 41 virtual const char* extractMetadata(int keyCode) = 0; 42 }; 43 44 // MediaMetadataRetrieverInterface 45 class MediaMetadataRetrieverInterface : public MediaMetadataRetrieverBase 46 { 47 public: MediaMetadataRetrieverInterface()48 MediaMetadataRetrieverInterface() {} 49 ~MediaMetadataRetrieverInterface()50 virtual ~MediaMetadataRetrieverInterface() {} getFrameAtTime(int64_t timeUs,int option)51 virtual VideoFrame* getFrameAtTime(int64_t timeUs, int option) { return NULL; } extractAlbumArt()52 virtual MediaAlbumArt* extractAlbumArt() { return NULL; } extractMetadata(int keyCode)53 virtual const char* extractMetadata(int keyCode) { return NULL; } 54 }; 55 56 }; // namespace android 57 58 #endif // ANDROID_MEDIAMETADATARETRIEVERINTERFACE_H 59 60