1 #ifndef _MEDIA_FILE_H 2 #define _MEDIA_FILE_H 3 4 #include <kernel/image.h> 5 #include <SupportDefs.h> 6 #include <StorageDefs.h> 7 #include <List.h> 8 #include <MediaDefs.h> 9 #include <MediaFormats.h> 10 11 12 namespace BPrivate { 13 class MediaExtractor; 14 class _IMPEXP_MEDIA MediaWriter; 15 class _AddonManager; 16 } 17 18 19 // forward declarations 20 class BMediaTrack; 21 class BParameterWeb; 22 class BView; 23 24 25 // flags for the BMediaFile constructor 26 enum { 27 B_MEDIA_FILE_REPLACE_MODE = 0x00000001, 28 B_MEDIA_FILE_NO_READ_AHEAD = 0x00000002, 29 B_MEDIA_FILE_UNBUFFERED = 0x00000006, 30 B_MEDIA_FILE_BIG_BUFFERS = 0x00000008 31 }; 32 33 // BMediaFile represents a media file (AVI, Quicktime, MPEG, AIFF, WAV, etc) 34 // 35 // To read a file you construct a BMediaFile with an entry_ref, get the 36 // BMediaTracks out of it and use those to read the data. 37 // 38 // To write a file you construct a BMediaFile with an entry ref and an id as 39 // returned by get_next_file_format(). You then CreateTrack() to create 40 // various audio & video tracks. Once you're done creating tracks, call 41 // CommitHeader(), then write data to each track and call CloseFile() when 42 // you're done. 43 // 44 45 class BMediaFile { 46 47 public: 48 // these four constructors are used for read-only access 49 BMediaFile( const entry_ref *ref); 50 BMediaFile( BDataIO * source); // BFile is a BDataIO 51 BMediaFile( const entry_ref * ref, 52 int32 flags); 53 BMediaFile( BDataIO * source, 54 int32 flags); // BFile is a BDataIO 55 56 // these two constructors are for read-write access 57 BMediaFile(const entry_ref *ref, // these two are write-only 58 const media_file_format * mfi, 59 int32 flags=0); 60 BMediaFile(BDataIO *destination, // BFile is a BDataIO 61 const media_file_format * mfi, 62 int32 flags=0); 63 64 /* modified by Marcus Overhagen */ 65 BMediaFile(const media_file_format * mfi, 66 int32 flags); 67 /* modified by Marcus Overhagen */ 68 69 70 virtual ~BMediaFile(); 71 72 status_t InitCheck() const; 73 74 // Get info about the underlying file format. 75 status_t GetFileFormatInfo(media_file_format *mfi) const; 76 77 // 78 // These functions are for read-only access to a media file. 79 // The data is read using the BMediaTrack object. 80 // 81 const char *Copyright(void) const; 82 int32 CountTracks() const; 83 84 // Can be called multiple times with the same index. You must call 85 // ReleaseTrack() when you're done with a track. 86 BMediaTrack *TrackAt(int32 index); 87 88 // Release the resource used by a given BMediaTrack object, to reduce 89 // the memory usage of your application. The specific 'track' object 90 // can no longer be used, but you can create another one by calling 91 // TrackAt() with the same track index. 92 status_t ReleaseTrack(BMediaTrack *track); 93 94 // A convenience. 95 status_t ReleaseAllTracks(void); 96 97 98 // Create and add a track to the media file 99 BMediaTrack *CreateTrack(media_format *mf, const media_codec_info *mci); 100 // Create and add a raw track to the media file (it has no encoder) 101 BMediaTrack *CreateTrack(media_format *mf); 102 103 // Lets you set the copyright info for the entire file 104 status_t AddCopyright(const char *data); 105 106 // Call this to add user-defined chunks to a file (if they're supported) 107 status_t AddChunk(int32 type, const void *data, size_t size); 108 109 // After you have added all the tracks you want, call this 110 status_t CommitHeader(void); 111 112 // After you have written all the data to the track objects, call this 113 status_t CloseFile(void); 114 115 // This is for controlling file format parameters 116 BParameterWeb *Web(); 117 status_t GetParameterValue(int32 id, void *valu, size_t *size); 118 status_t SetParameterValue(int32 id, const void *valu, size_t size); 119 BView *GetParameterView(); 120 121 122 // For the future... 123 virtual status_t Perform(int32 selector, void * data); 124 125 private: 126 BPrivate::MediaExtractor *fExtractor; 127 int32 _reserved_BMediaFile_was_fExtractorID; 128 int32 fTrackNum; 129 status_t fErr; 130 131 BPrivate::_AddonManager *fEncoderMgr; 132 BPrivate::_AddonManager *fWriterMgr; 133 BPrivate::MediaWriter *fWriter; 134 int32 fWriterID; 135 media_file_format fMFI; 136 137 bool fFileClosed; 138 bool _reserved_was_fUnused[3]; 139 BList *fTrackList; 140 141 void Init(); 142 void InitReader(BDataIO *source, int32 flags = 0); 143 void InitWriter(BDataIO *source, const media_file_format * mfi, 144 int32 flags); 145 146 BMediaFile(); 147 BMediaFile(const BMediaFile&); 148 BMediaFile& operator=(const BMediaFile&); 149 150 BFile *fFile; 151 152 153 /* fbc data and virtuals */ 154 155 uint32 _reserved_BMediaFile_[32]; 156 157 virtual status_t _Reserved_BMediaFile_0(int32 arg, ...); 158 virtual status_t _Reserved_BMediaFile_1(int32 arg, ...); 159 virtual status_t _Reserved_BMediaFile_2(int32 arg, ...); 160 virtual status_t _Reserved_BMediaFile_3(int32 arg, ...); 161 virtual status_t _Reserved_BMediaFile_4(int32 arg, ...); 162 virtual status_t _Reserved_BMediaFile_5(int32 arg, ...); 163 virtual status_t _Reserved_BMediaFile_6(int32 arg, ...); 164 virtual status_t _Reserved_BMediaFile_7(int32 arg, ...); 165 virtual status_t _Reserved_BMediaFile_8(int32 arg, ...); 166 virtual status_t _Reserved_BMediaFile_9(int32 arg, ...); 167 virtual status_t _Reserved_BMediaFile_10(int32 arg, ...); 168 virtual status_t _Reserved_BMediaFile_11(int32 arg, ...); 169 virtual status_t _Reserved_BMediaFile_12(int32 arg, ...); 170 virtual status_t _Reserved_BMediaFile_13(int32 arg, ...); 171 virtual status_t _Reserved_BMediaFile_14(int32 arg, ...); 172 virtual status_t _Reserved_BMediaFile_15(int32 arg, ...); 173 virtual status_t _Reserved_BMediaFile_16(int32 arg, ...); 174 virtual status_t _Reserved_BMediaFile_17(int32 arg, ...); 175 virtual status_t _Reserved_BMediaFile_18(int32 arg, ...); 176 virtual status_t _Reserved_BMediaFile_19(int32 arg, ...); 177 virtual status_t _Reserved_BMediaFile_20(int32 arg, ...); 178 virtual status_t _Reserved_BMediaFile_21(int32 arg, ...); 179 virtual status_t _Reserved_BMediaFile_22(int32 arg, ...); 180 virtual status_t _Reserved_BMediaFile_23(int32 arg, ...); 181 virtual status_t _Reserved_BMediaFile_24(int32 arg, ...); 182 virtual status_t _Reserved_BMediaFile_25(int32 arg, ...); 183 virtual status_t _Reserved_BMediaFile_26(int32 arg, ...); 184 virtual status_t _Reserved_BMediaFile_27(int32 arg, ...); 185 virtual status_t _Reserved_BMediaFile_28(int32 arg, ...); 186 virtual status_t _Reserved_BMediaFile_29(int32 arg, ...); 187 virtual status_t _Reserved_BMediaFile_30(int32 arg, ...); 188 virtual status_t _Reserved_BMediaFile_31(int32 arg, ...); 189 virtual status_t _Reserved_BMediaFile_32(int32 arg, ...); 190 virtual status_t _Reserved_BMediaFile_33(int32 arg, ...); 191 virtual status_t _Reserved_BMediaFile_34(int32 arg, ...); 192 virtual status_t _Reserved_BMediaFile_35(int32 arg, ...); 193 virtual status_t _Reserved_BMediaFile_36(int32 arg, ...); 194 virtual status_t _Reserved_BMediaFile_37(int32 arg, ...); 195 virtual status_t _Reserved_BMediaFile_38(int32 arg, ...); 196 virtual status_t _Reserved_BMediaFile_39(int32 arg, ...); 197 virtual status_t _Reserved_BMediaFile_40(int32 arg, ...); 198 virtual status_t _Reserved_BMediaFile_41(int32 arg, ...); 199 virtual status_t _Reserved_BMediaFile_42(int32 arg, ...); 200 virtual status_t _Reserved_BMediaFile_43(int32 arg, ...); 201 virtual status_t _Reserved_BMediaFile_44(int32 arg, ...); 202 virtual status_t _Reserved_BMediaFile_45(int32 arg, ...); 203 virtual status_t _Reserved_BMediaFile_46(int32 arg, ...); 204 virtual status_t _Reserved_BMediaFile_47(int32 arg, ...); 205 }; 206 207 #endif 208