MPEG4Extractor.h revision 49ce671c4efa4c5d038351ca441e34c5afa5241f
151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Copyright (C) 2009 The Android Open Source Project 351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Licensed under the Apache License, Version 2.0 (the "License"); 551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * you may not use this file except in compliance with the License. 651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * You may obtain a copy of the License at 751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * http://www.apache.org/licenses/LICENSE-2.0 951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Unless required by applicable law or agreed to in writing, software 1151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * distributed under the License is distributed on an "AS IS" BASIS, 1251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * See the License for the specific language governing permissions and 1451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * limitations under the License. 1551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 1651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 1751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#ifndef MPEG4_EXTRACTOR_H_ 1851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 1951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#define MPEG4_EXTRACTOR_H_ 2051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#include <arpa/inet.h> 2251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#include <media/DataSource.h> 2451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#include <media/MediaExtractor.h> 2551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#include <media/stagefright/foundation/AString.h> 2651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#include <utils/List.h> 2751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#include <utils/Vector.h> 2851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#include <utils/String8.h> 2951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskinamespace android { 3151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskistruct AMessage; 3251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiclass DataSource; 3351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiclass SampleTable; 3451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiclass String8; 3551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskinamespace heif { 3651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiclass ItemTable; 3751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski} 3851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiusing heif::ItemTable; 3951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskistruct SidxEntry { 4151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski size_t mSize; 4251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski uint32_t mDurationUs; 4351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski}; 4451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskistruct Trex { 4651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski uint32_t track_ID; 4751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski uint32_t default_sample_description_index; 4851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski uint32_t default_sample_duration; 4951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski uint32_t default_sample_size; 5051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski uint32_t default_sample_flags; 5151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski}; 5251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiclass MPEG4Extractor : public MediaExtractor { 5451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipublic: 5551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // Extractor assumes ownership of "source". 5651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski explicit MPEG4Extractor(const sp<DataSource> &source, const char *mime = NULL); 5751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski virtual size_t countTracks(); 5951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski virtual sp<MediaSource> getTrack(size_t index); 6051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); 6151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 62 virtual sp<MetaData> getMetaData(); 63 virtual uint32_t flags() const; 64 virtual const char * name() { return "MPEG4Extractor"; } 65 virtual void release(); 66 67 // for DRM 68 virtual char* getDrmTrackInfo(size_t trackID, int *len); 69 70protected: 71 virtual ~MPEG4Extractor(); 72 73private: 74 75 struct PsshInfo { 76 uint8_t uuid[16]; 77 uint32_t datalen; 78 uint8_t *data; 79 }; 80 struct Track { 81 Track *next; 82 sp<MetaData> meta; 83 uint32_t timescale; 84 sp<SampleTable> sampleTable; 85 bool includes_expensive_metadata; 86 bool skipTrack; 87 bool has_elst; 88 int64_t elst_media_time; 89 uint64_t elst_segment_duration; 90 }; 91 92 Vector<SidxEntry> mSidxEntries; 93 off64_t mMoofOffset; 94 bool mMoofFound; 95 bool mMdatFound; 96 97 Vector<PsshInfo> mPssh; 98 99 Vector<Trex> mTrex; 100 101 sp<DataSource> mDataSource; 102 status_t mInitCheck; 103 uint32_t mHeaderTimescale; 104 bool mIsQT; 105 bool mIsHeif; 106 bool mHasMoovBox; 107 bool mPreferHeif; 108 109 Track *mFirstTrack, *mLastTrack; 110 111 sp<MetaData> mFileMetaData; 112 113 Vector<uint32_t> mPath; 114 String8 mLastCommentMean; 115 String8 mLastCommentName; 116 String8 mLastCommentData; 117 118 KeyedVector<uint32_t, AString> mMetaKeyMap; 119 120 status_t readMetaData(); 121 status_t parseChunk(off64_t *offset, int depth); 122 status_t parseITunesMetaData(off64_t offset, size_t size); 123 status_t parseColorInfo(off64_t offset, size_t size); 124 status_t parse3GPPMetaData(off64_t offset, size_t size, int depth); 125 void parseID3v2MetaData(off64_t offset); 126 status_t parseQTMetaKey(off64_t data_offset, size_t data_size); 127 status_t parseQTMetaVal(int32_t keyId, off64_t data_offset, size_t data_size); 128 129 status_t updateAudioTrackInfoFromESDS_MPEG4Audio( 130 const void *esds_data, size_t esds_size); 131 132 static status_t verifyTrack(Track *track); 133 134 struct SINF { 135 SINF *next; 136 uint16_t trackID; 137 uint8_t IPMPDescriptorID; 138 ssize_t len; 139 char *IPMPData; 140 }; 141 142 SINF *mFirstSINF; 143 144 bool mIsDrm; 145 sp<ItemTable> mItemTable; 146 147 status_t parseDrmSINF(off64_t *offset, off64_t data_offset); 148 149 status_t parseTrackHeader(off64_t data_offset, off64_t data_size); 150 151 status_t parseSegmentIndex(off64_t data_offset, size_t data_size); 152 153 Track *findTrackByMimePrefix(const char *mimePrefix); 154 155 status_t parseAC3SampleEntry(off64_t offset); 156 status_t parseAC3SpecificBox(off64_t offset, uint16_t sampleRate); 157 158 MPEG4Extractor(const MPEG4Extractor &); 159 MPEG4Extractor &operator=(const MPEG4Extractor &); 160}; 161 162bool SniffMPEG4( 163 const sp<DataSource> &source, String8 *mimeType, float *confidence, 164 sp<AMessage> *); 165 166} // namespace android 167 168#endif // MPEG4_EXTRACTOR_H_ 169