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 28class DataSource; 29struct IMediaHTTPService; 30 31// Abstract base class 32class MediaMetadataRetrieverBase : public RefBase 33{ 34public: 35 MediaMetadataRetrieverBase() {} 36 virtual ~MediaMetadataRetrieverBase() {} 37 38 virtual status_t setDataSource( 39 const sp<IMediaHTTPService> &httpService, 40 const char *url, 41 const KeyedVector<String8, String8> *headers = NULL) = 0; 42 43 virtual status_t setDataSource(int fd, int64_t offset, int64_t length) = 0; 44 virtual status_t setDataSource(const sp<DataSource>& source) = 0; 45 virtual VideoFrame* getFrameAtTime(int64_t timeUs, int option) = 0; 46 virtual MediaAlbumArt* extractAlbumArt() = 0; 47 virtual const char* extractMetadata(int keyCode) = 0; 48}; 49 50// MediaMetadataRetrieverInterface 51class MediaMetadataRetrieverInterface : public MediaMetadataRetrieverBase 52{ 53public: 54 MediaMetadataRetrieverInterface() {} 55 56 virtual ~MediaMetadataRetrieverInterface() {} 57 virtual VideoFrame* getFrameAtTime(int64_t timeUs, int option) { return NULL; } 58 virtual MediaAlbumArt* extractAlbumArt() { return NULL; } 59 virtual const char* extractMetadata(int keyCode) { return NULL; } 60}; 61 62}; // namespace android 63 64#endif // ANDROID_MEDIAMETADATARETRIEVERINTERFACE_H 65