1 /* 2 * Copyright 2009-2010, Stephan Aßmus <supertippi@gmx.de>. All rights reserved. 3 * Copyright 2009, Axel Dörfler, axeld@pinc-software.de. 4 * Copyright 2008, Maurice Kalinowski. All rights reserved. 5 * Copyright 2004-2007, Marcus Overhagen. All rights reserved. 6 * 7 * Distributed under the terms of the MIT License. 8 */ 9 #ifndef _MEDIA_EXTRACTOR_H 10 #define _MEDIA_EXTRACTOR_H 11 12 13 #include "ReaderPlugin.h" 14 #include "DecoderPlugin.h" 15 16 17 namespace BPrivate { 18 namespace media { 19 20 21 class ChunkCache; 22 struct chunk_buffer; 23 24 25 struct stream_info { 26 status_t status; 27 void* cookie; 28 bool hasCookie; 29 const void* infoBuffer; 30 size_t infoBufferSize; 31 ChunkCache* chunkCache; 32 chunk_buffer* lastChunk; 33 media_format encodedFormat; 34 }; 35 36 37 class MediaExtractor { 38 public: 39 MediaExtractor(BDataIO* source, int32 flags); 40 ~MediaExtractor(); 41 42 status_t InitCheck(); 43 44 void GetFileFormatInfo( 45 media_file_format* fileFormat) const; 46 status_t GetMetaData(BMessage* _data) const; 47 48 int32 StreamCount(); 49 50 const char* Copyright(); 51 52 const media_format* EncodedFormat(int32 stream); 53 int64 CountFrames(int32 stream) const; 54 bigtime_t Duration(int32 stream) const; 55 56 status_t Seek(int32 stream, uint32 seekTo, 57 int64* _frame, bigtime_t* _time); 58 status_t FindKeyFrame(int32 stream, uint32 seekTo, 59 int64* _frame, bigtime_t* _time) const; 60 61 status_t GetNextChunk(int32 stream, 62 const void** _chunkBuffer, 63 size_t* _chunkSize, 64 media_header* mediaHeader); 65 66 status_t CreateDecoder(int32 stream, Decoder** _decoder, 67 media_codec_info* codecInfo); 68 69 status_t GetStreamMetaData(int32 stream, 70 BMessage* _data) const; 71 72 private: 73 void _RecycleLastChunk(stream_info& info); 74 static int32 _ExtractorEntry(void* arg); 75 void _ExtractorThread(); 76 77 private: 78 status_t fInitStatus; 79 80 sem_id fExtractorWaitSem; 81 thread_id fExtractorThread; 82 83 BDataIO* fSource; 84 Reader* fReader; 85 86 stream_info* fStreamInfo; 87 int32 fStreamCount; 88 89 media_file_format fFileFormat; 90 }; 91 92 } // namespace media 93 } // namespace BPrivate 94 95 using namespace BPrivate::media; 96 97 #endif // _MEDIA_EXTRACTOR_H 98