1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef AMR_EXTRACTOR_H_ 18 19 #define AMR_EXTRACTOR_H_ 20 21 #include <utils/Errors.h> 22 #include <media/MediaExtractorPluginApi.h> 23 #include <media/MediaExtractorPluginHelper.h> 24 #include <media/NdkMediaFormat.h> 25 26 namespace android { 27 28 struct AMessage; 29 class String8; 30 #define OFFSET_TABLE_LEN 300 31 32 class AMRExtractor : public MediaExtractorPluginHelper { 33 public: 34 explicit AMRExtractor(DataSourceHelper *source); 35 36 virtual size_t countTracks(); 37 virtual MediaTrackHelper *getTrack(size_t index); 38 virtual media_status_t getTrackMetaData(AMediaFormat *meta, size_t index, uint32_t flags); 39 40 virtual media_status_t getMetaData(AMediaFormat *meta); 41 virtual const char * name() { return "AMRExtractor"; } 42 43 protected: 44 virtual ~AMRExtractor(); 45 46 private: 47 DataSourceHelper *mDataSource; 48 AMediaFormat *mMeta; 49 status_t mInitCheck; 50 bool mIsWide; 51 52 off64_t mOffsetTable[OFFSET_TABLE_LEN]; //5 min 53 size_t mOffsetTableLength; 54 55 AMRExtractor(const AMRExtractor &); 56 AMRExtractor &operator=(const AMRExtractor &); 57 }; 58 59 } // namespace android 60 61 #endif // AMR_EXTRACTOR_H_ 62
