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 SAMPLE_TABLE_H_ 18 19 #define SAMPLE_TABLE_H_ 20 21 #include <sys/types.h> 22 #include <stdint.h> 23 24 #include <media/stagefright/MediaErrors.h> 25 #include <utils/RefBase.h> 26 #include <utils/threads.h> 27 28 namespace android { 29 30 class DataSource; 31 struct SampleIterator; 32 33 class SampleTable : public RefBase { 34 public: 35 SampleTable(const sp<DataSource> &source); 36 37 // type can be 'stco' or 'co64'. 38 status_t setChunkOffsetParams( 39 uint32_t type, off_t data_offset, size_t data_size); 40 41 status_t setSampleToChunkParams(off_t data_offset, size_t data_size); 42 43 // type can be 'stsz' or 'stz2'. 44 status_t setSampleSizeParams( 45 uint32_t type, off_t data_offset, size_t data_size); 46 47 status_t setTimeToSampleParams(off_t data_offset, size_t data_size); 48 49 status_t setSyncSampleParams(off_t data_offset, size_t data_size); 50 51 //////////////////////////////////////////////////////////////////////////// 52 53 uint32_t countChunkOffsets() const; 54 55 uint32_t countSamples() const; 56 57 status_t getMaxSampleSize(size_t *size); 58 59 status_t getMetaDataForSample( 60 uint32_t sampleIndex, 61 off_t *offset, 62 size_t *size, 63 uint32_t *decodingTime, 64 bool *isSyncSample = NULL); 65 66 enum { 67 kFlagBefore, 68 kFlagAfter, 69 kFlagClosest 70 }; 71 status_t findSampleAtTime( 72 uint32_t req_time, uint32_t *sample_index, uint32_t flags); 73 74 status_t findSyncSampleNear( 75 uint32_t start_sample_index, uint32_t *sample_index, 76 uint32_t flags); 77 78 status_t findThumbnailSample(uint32_t *sample_index); 79 80 protected: 81 ~SampleTable(); 82 83 private: 84 static const uint32_t kChunkOffsetType32; 85 static const uint32_t kChunkOffsetType64; 86 static const uint32_t kSampleSizeType32; 87 static const uint32_t kSampleSizeTypeCompact; 88 89 sp<DataSource> mDataSource; 90 Mutex mLock; 91 92 off_t mChunkOffsetOffset; 93 uint32_t mChunkOffsetType; 94 uint32_t mNumChunkOffsets; 95 96 off_t mSampleToChunkOffset; 97 uint32_t mNumSampleToChunkOffsets; 98 99 off_t mSampleSizeOffset; 100 uint32_t mSampleSizeFieldSize; 101 uint32_t mDefaultSampleSize; 102 uint32_t mNumSampleSizes; 103 104 uint32_t mTimeToSampleCount; 105 uint32_t *mTimeToSample; 106 107 off_t mSyncSampleOffset; 108 uint32_t mNumSyncSamples; 109 uint32_t *mSyncSamples; 110 size_t mLastSyncSampleIndex; 111 112 SampleIterator *mSampleIterator; 113 114 struct SampleToChunkEntry { 115 uint32_t startChunk; 116 uint32_t samplesPerChunk; 117 uint32_t chunkDesc; 118 }; 119 SampleToChunkEntry *mSampleToChunkEntries; 120 121 friend struct SampleIterator; 122 123 status_t getSampleSize_l(uint32_t sample_index, size_t *sample_size); 124 125 SampleTable(const SampleTable &); 126 SampleTable &operator=(const SampleTable &); 127 }; 128 129 } // namespace android 130 131 #endif // SAMPLE_TABLE_H_ 132
