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 SAMPLE_ITERATOR_H_ 18 19 #define SAMPLE_ITERATOR_H_ 20 21 #include <utils/Vector.h> 22 23 namespace android { 24 25 class SampleTable; 26 27 struct SampleIterator { 28 SampleIterator(SampleTable *table); 29 30 status_t seekTo(uint32_t sampleIndex); 31 32 uint32_t getChunkIndex() const { return mCurrentChunkIndex; } 33 uint32_t getDescIndex() const { return mChunkDesc; } 34 off64_t getSampleOffset() const { return mCurrentSampleOffset; } 35 size_t getSampleSize() const { return mCurrentSampleSize; } 36 uint32_t getSampleTime() const { return mCurrentSampleTime; } 37 uint32_t getSampleDuration() const { return mCurrentSampleDuration; } 38 39 status_t getSampleSizeDirect( 40 uint32_t sampleIndex, size_t *size); 41 42 private: 43 SampleTable *mTable; 44 45 bool mInitialized; 46 47 uint32_t mSampleToChunkIndex; 48 uint32_t mFirstChunk; 49 uint32_t mFirstChunkSampleIndex; 50 uint32_t mStopChunk; 51 uint32_t mStopChunkSampleIndex; 52 uint32_t mSamplesPerChunk; 53 uint32_t mChunkDesc; 54 55 uint32_t mCurrentChunkIndex; 56 off64_t mCurrentChunkOffset; 57 Vector<size_t> mCurrentChunkSampleSizes; 58 59 uint32_t mTimeToSampleIndex; 60 uint32_t mTTSSampleIndex; 61 uint32_t mTTSSampleTime; 62 uint32_t mTTSCount; 63 uint32_t mTTSDuration; 64 65 uint32_t mCurrentSampleIndex; 66 off64_t mCurrentSampleOffset; 67 size_t mCurrentSampleSize; 68 uint32_t mCurrentSampleTime; 69 uint32_t mCurrentSampleDuration; 70 71 void reset(); 72 status_t findChunkRange(uint32_t sampleIndex); 73 status_t getChunkOffset(uint32_t chunk, off64_t *offset); 74 status_t findSampleTimeAndDuration(uint32_t sampleIndex, uint32_t *time, uint32_t *duration); 75 76 SampleIterator(const SampleIterator &); 77 SampleIterator &operator=(const SampleIterator &); 78 }; 79 80 } // namespace android 81 82 #endif // SAMPLE_ITERATOR_H_ 83
