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 #include <utils/Vector.h> 18 19 namespace android { 20 21 class SampleTable; 22 23 struct SampleIterator { 24 SampleIterator(SampleTable *table); 25 26 status_t seekTo(uint32_t sampleIndex); 27 getChunkIndexSampleIterator28 uint32_t getChunkIndex() const { return mCurrentChunkIndex; } getDescIndexSampleIterator29 uint32_t getDescIndex() const { return mChunkDesc; } getSampleOffsetSampleIterator30 off64_t getSampleOffset() const { return mCurrentSampleOffset; } getSampleSizeSampleIterator31 size_t getSampleSize() const { return mCurrentSampleSize; } getSampleTimeSampleIterator32 uint32_t getSampleTime() const { return mCurrentSampleTime; } getSampleDurationSampleIterator33 uint32_t getSampleDuration() const { return mCurrentSampleDuration; } 34 35 status_t getSampleSizeDirect( 36 uint32_t sampleIndex, size_t *size); 37 38 private: 39 SampleTable *mTable; 40 41 bool mInitialized; 42 43 uint32_t mSampleToChunkIndex; 44 uint32_t mFirstChunk; 45 uint32_t mFirstChunkSampleIndex; 46 uint32_t mStopChunk; 47 uint32_t mStopChunkSampleIndex; 48 uint32_t mSamplesPerChunk; 49 uint32_t mChunkDesc; 50 51 uint32_t mCurrentChunkIndex; 52 off64_t mCurrentChunkOffset; 53 Vector<size_t> mCurrentChunkSampleSizes; 54 55 uint32_t mTimeToSampleIndex; 56 uint32_t mTTSSampleIndex; 57 uint32_t mTTSSampleTime; 58 uint32_t mTTSCount; 59 uint32_t mTTSDuration; 60 61 uint32_t mCurrentSampleIndex; 62 off64_t mCurrentSampleOffset; 63 size_t mCurrentSampleSize; 64 uint32_t mCurrentSampleTime; 65 uint32_t mCurrentSampleDuration; 66 67 void reset(); 68 status_t findChunkRange(uint32_t sampleIndex); 69 status_t getChunkOffset(uint32_t chunk, off64_t *offset); 70 status_t findSampleTimeAndDuration(uint32_t sampleIndex, uint32_t *time, uint32_t *duration); 71 72 SampleIterator(const SampleIterator &); 73 SampleIterator &operator=(const SampleIterator &); 74 }; 75 76 } // namespace android 77 78