1 /* 2 * Copyright (C) 2010 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 XING_SEEKER_H_ 18 19 #define XING_SEEKER_H_ 20 21 #include "MP3Seeker.h" 22 23 namespace android { 24 25 class DataSourceBase; 26 27 struct XINGSeeker : public MP3Seeker { 28 static XINGSeeker *CreateFromSource( 29 DataSourceBase *source, off64_t first_frame_pos); 30 31 virtual bool getDuration(int64_t *durationUs); 32 virtual bool getOffsetForTime(int64_t *timeUs, off64_t *pos); 33 34 virtual int32_t getEncoderDelay(); 35 virtual int32_t getEncoderPadding(); 36 37 private: 38 int64_t mFirstFramePos; 39 int64_t mDurationUs; 40 int32_t mSizeBytes; 41 int32_t mEncoderDelay; 42 int32_t mEncoderPadding; 43 44 // TOC entries in XING header. Skip the first one since it's always 0. 45 unsigned char mTOC[99]; 46 bool mTOCValid; 47 48 XINGSeeker(); 49 50 DISALLOW_EVIL_CONSTRUCTORS(XINGSeeker); 51 }; 52 53 } // namespace android 54 55 #endif // XING_SEEKER_H_ 56 57
