| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef MPEG4_EXTRACTOR_H_ |
| |
| #define MPEG4_EXTRACTOR_H_ |
| |
| #include <arpa/inet.h> |
| |
| #include <media/stagefright/DataSource.h> |
| #include <media/stagefright/MediaExtractor.h> |
| #include <media/stagefright/Utils.h> |
| #include <utils/List.h> |
| #include <utils/Vector.h> |
| #include <utils/String8.h> |
| |
| namespace android { |
| |
| struct AMessage; |
| class DataSource; |
| class SampleTable; |
| class String8; |
| |
| struct SidxEntry { |
| size_t mSize; |
| uint32_t mDurationUs; |
| }; |
| |
| struct Trex { |
| uint32_t track_ID; |
| uint32_t default_sample_description_index; |
| uint32_t default_sample_duration; |
| uint32_t default_sample_size; |
| uint32_t default_sample_flags; |
| }; |
| |
| class MPEG4Extractor : public MediaExtractor { |
| public: |
| // Extractor assumes ownership of "source". |
| MPEG4Extractor(const sp<DataSource> &source); |
| |
| virtual size_t countTracks(); |
| virtual sp<IMediaSource> getTrack(size_t index); |
| virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); |
| |
| virtual sp<MetaData> getMetaData(); |
| virtual uint32_t flags() const; |
| virtual const char * name() { return "MPEG4Extractor"; } |
| |
| // for DRM |
| virtual char* getDrmTrackInfo(size_t trackID, int *len); |
| |
| protected: |
| virtual ~MPEG4Extractor(); |
| |
| private: |
| |
| struct PsshInfo { |
| uint8_t uuid[16]; |
| uint32_t datalen; |
| uint8_t *data; |
| }; |
| struct Track { |
| Track *next; |
| sp<MetaData> meta; |
| uint32_t timescale; |
| sp<SampleTable> sampleTable; |
| bool includes_expensive_metadata; |
| bool skipTrack; |
| }; |
| |
| Vector<SidxEntry> mSidxEntries; |
| off64_t mMoofOffset; |
| bool mMoofFound; |
| bool mMdatFound; |
| |
| Vector<PsshInfo> mPssh; |
| |
| Vector<Trex> mTrex; |
| |
| sp<DataSource> mDataSource; |
| status_t mInitCheck; |
| uint32_t mHeaderTimescale; |
| bool mIsQT; |
| |
| Track *mFirstTrack, *mLastTrack; |
| |
| sp<MetaData> mFileMetaData; |
| |
| Vector<uint32_t> mPath; |
| String8 mLastCommentMean; |
| String8 mLastCommentName; |
| String8 mLastCommentData; |
| |
| KeyedVector<uint32_t, AString> mMetaKeyMap; |
| |
| status_t readMetaData(); |
| status_t parseChunk(off64_t *offset, int depth); |
| status_t parseITunesMetaData(off64_t offset, size_t size); |
| status_t parseColorInfo(off64_t offset, size_t size); |
| status_t parse3GPPMetaData(off64_t offset, size_t size, int depth); |
| void parseID3v2MetaData(off64_t offset); |
| status_t parseQTMetaKey(off64_t data_offset, size_t data_size); |
| status_t parseQTMetaVal(int32_t keyId, off64_t data_offset, size_t data_size); |
| |
| status_t updateAudioTrackInfoFromESDS_MPEG4Audio( |
| const void *esds_data, size_t esds_size); |
| |
| static status_t verifyTrack(Track *track); |
| |
| struct SINF { |
| SINF *next; |
| uint16_t trackID; |
| uint8_t IPMPDescriptorID; |
| ssize_t len; |
| char *IPMPData; |
| }; |
| |
| SINF *mFirstSINF; |
| |
| bool mIsDrm; |
| status_t parseDrmSINF(off64_t *offset, off64_t data_offset); |
| |
| status_t parseTrackHeader(off64_t data_offset, off64_t data_size); |
| |
| status_t parseSegmentIndex(off64_t data_offset, size_t data_size); |
| |
| Track *findTrackByMimePrefix(const char *mimePrefix); |
| |
| MPEG4Extractor(const MPEG4Extractor &); |
| MPEG4Extractor &operator=(const MPEG4Extractor &); |
| }; |
| |
| bool SniffMPEG4( |
| const sp<DataSource> &source, String8 *mimeType, float *confidence, |
| sp<AMessage> *); |
| |
| } // namespace android |
| |
| #endif // MPEG4_EXTRACTOR_H_ |