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