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author | Andreas Huber <andih@google.com> | 2011-03-24 14:18:02 -0700 |
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committer | Andreas Huber <andih@google.com> | 2011-03-30 13:13:25 -0700 |
commit | cabb7da7125a80c55233bd23959327424e9646cc (patch) | |
tree | adf7a349a8145ccfbb92006201129a2a0884e7a3 /media/libstagefright/include/AVIExtractor.h | |
parent | 4111bec3b68a200932817f4b8924fea08f4d5905 (diff) | |
download | frameworks_base-cabb7da7125a80c55233bd23959327424e9646cc.zip frameworks_base-cabb7da7125a80c55233bd23959327424e9646cc.tar.gz frameworks_base-cabb7da7125a80c55233bd23959327424e9646cc.tar.bz2 |
Support for divx files, i.e. mpeg 4 video + mpeg audio layer III in .avi files
Change-Id: I6e1e989c43300ddb0d341e3e9183cdccd69eeae6
related-to-bug: 4192562
Diffstat (limited to 'media/libstagefright/include/AVIExtractor.h')
-rw-r--r-- | media/libstagefright/include/AVIExtractor.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/media/libstagefright/include/AVIExtractor.h b/media/libstagefright/include/AVIExtractor.h new file mode 100644 index 0000000..375a94d --- /dev/null +++ b/media/libstagefright/include/AVIExtractor.h @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2011 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 AVI_EXTRACTOR_H_ + +#define AVI_EXTRACTOR_H_ + +#include <media/stagefright/foundation/ABase.h> +#include <media/stagefright/MediaExtractor.h> +#include <media/stagefright/MediaSource.h> +#include <utils/Vector.h> + +namespace android { + +struct AVIExtractor : public MediaExtractor { + AVIExtractor(const sp<DataSource> &dataSource); + + virtual size_t countTracks(); + + virtual sp<MediaSource> getTrack(size_t index); + + virtual sp<MetaData> getTrackMetaData( + size_t index, uint32_t flags); + + virtual sp<MetaData> getMetaData(); + +protected: + virtual ~AVIExtractor(); + +private: + struct AVISource; + + struct SampleInfo { + uint32_t mOffset; + bool mIsKey; + }; + + struct Track { + sp<MetaData> mMeta; + Vector<SampleInfo> mSamples; + uint32_t mRate; + uint32_t mScale; + + enum Kind { + AUDIO, + VIDEO, + OTHER + + } mKind; + + size_t mNumSyncSamples; + size_t mThumbnailSampleSize; + ssize_t mThumbnailSampleIndex; + size_t mMaxSampleSize; + }; + + sp<DataSource> mDataSource; + status_t mInitCheck; + Vector<Track> mTracks; + + off64_t mMovieOffset; + bool mFoundIndex; + bool mOffsetsAreAbsolute; + + ssize_t parseChunk(off64_t offset, off64_t size, int depth = 0); + status_t parseStreamHeader(off64_t offset, size_t size); + status_t parseStreamFormat(off64_t offset, size_t size); + status_t parseIndex(off64_t offset, size_t size); + + status_t parseHeaders(); + + status_t getSampleInfo( + size_t trackIndex, size_t sampleIndex, + off64_t *offset, size_t *size, bool *isKey); + + status_t getSampleIndexAtTime( + size_t trackIndex, + int64_t timeUs, MediaSource::ReadOptions::SeekMode mode, + size_t *sampleIndex) const; + + status_t addMPEG4CodecSpecificData(size_t trackIndex); + + static bool IsCorrectChunkType( + ssize_t trackIndex, Track::Kind kind, uint32_t chunkType); + + DISALLOW_EVIL_CONSTRUCTORS(AVIExtractor); +}; + +class String8; +struct AMessage; + +bool SniffAVI( + const sp<DataSource> &source, String8 *mimeType, float *confidence, + sp<AMessage> *); + +} // namespace android + +#endif // AVI_EXTRACTOR_H_ |