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 struct 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; } 33 34 status_t getSampleSizeDirect( 35 uint32_t sampleIndex, size_t *size); 36 37 private: 38 SampleTable *mTable; 39 40 bool mInitialized; 41 42 uint32_t mSampleToChunkIndex; 43 uint32_t mFirstChunk; 44 uint32_t mFirstChunkSampleIndex; 45 uint32_t mStopChunk; 46 uint32_t mStopChunkSampleIndex; 47 uint32_t mSamplesPerChunk; 48 uint32_t mChunkDesc; 49 50 uint32_t mCurrentChunkIndex; 51 off64_t mCurrentChunkOffset; 52 Vector<size_t> mCurrentChunkSampleSizes; 53 54 uint32_t mTimeToSampleIndex; 55 uint32_t mTTSSampleIndex; 56 uint32_t mTTSSampleTime; 57 uint32_t mTTSCount; 58 uint32_t mTTSDuration; 59 60 uint32_t mCurrentSampleIndex; 61 off64_t mCurrentSampleOffset; 62 size_t mCurrentSampleSize; 63 uint32_t mCurrentSampleTime; 64 65 void reset(); 66 status_t findChunkRange(uint32_t sampleIndex); 67 status_t getChunkOffset(uint32_t chunk, off64_t *offset); 68 status_t findSampleTime(uint32_t sampleIndex, uint32_t *time); 69 70 SampleIterator(const SampleIterator &); 71 SampleIterator &operator=(const SampleIterator &); 72 }; 73 74 } // namespace android 75 76