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| MacBinary | 1994-04-25 | 55.8 KB | [ONLN/HLX2] |
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This file was processed as: MacBinary
(archive/macBinary).
You can browse this item here: How to write a Data Handler
| Confidence | Program | Detection | Match Type | Support
|
|---|
| 10%
| dexvert
| MacBinary (archive/macBinary)
| fallback
| Supported |
| 100%
| file
| MacBinary II, inited, Mon Apr 25 12:48:24 1994, modified Mon Apr 25 13:51:06 1994, creator 'HLX2', type 'ONLN', 55047 bytes "How to write a Data Handler" , at 0xd787 1672 bytes resource
| default (weak)
| |
| 99%
| file
| data
| default
| |
| 100%
| TrID
| MacBinary 2
| default (weak)
| |
| 100%
| lsar
| MacBinary
| default
|
|
| id metadata |
|---|
| key | value |
|---|
| macFileType | [ONLN] |
| macFileCreator | [HLX2] |
hex view+--------+-------------------------+-------------------------+--------+--------+
|00000000| 00 1b 48 6f 77 20 74 6f | 20 77 72 69 74 65 20 61 |..How to| write a|
|00000010| 20 44 61 74 61 20 48 61 | 6e 64 6c 65 72 00 00 00 | Data Ha|ndler...|
|00000020| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000040| 00 4f 4e 4c 4e 48 4c 58 | 32 01 00 00 00 00 00 00 |.ONLNHLX|2.......|
|00000050| 00 00 00 00 00 d7 07 00 | 00 06 88 a9 e1 a4 d8 a9 |........|........|
|00000060| e1 b3 8a 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000070| 00 00 00 00 00 00 00 00 | 00 00 81 81 ca a1 00 00 |........|........|
|00000080| 48 6f 77 20 74 6f 20 57 | 72 69 74 65 20 61 20 44 |How to W|rite a D|
|00000090| 61 74 61 20 48 61 6e 64 | 6c 65 72 0d 51 75 69 63 |ata Hand|ler.Quic|
|000000a0| 6b 54 69 6d 65 20 76 65 | 72 73 69 6f 6e 3a 20 32 |kTime ve|rsion: 2|
|000000b0| 2e 30 0d 49 6e 74 72 6f | 64 75 63 74 69 6f 6e 0d |.0.Intro|duction.|
|000000c0| 47 6f 6f 64 20 6c 75 63 | 6b 2e 0d 44 61 74 61 20 |Good luc|k..Data |
|000000d0| 48 61 6e 64 6c 65 72 20 | 53 65 6c 65 63 74 69 6f |Handler |Selectio|
|000000e0| 6e 0d 49 6e 20 74 68 65 | 20 70 61 73 74 2c 20 51 |n.In the| past, Q|
|000000f0| 75 69 63 6b 54 69 6d 65 | 20 63 68 6f 73 65 20 77 |uickTime| chose w|
|00000100| 68 69 63 68 20 64 61 74 | 61 20 68 61 6e 64 6c 65 |hich dat|a handle|
|00000110| 72 20 74 6f 20 75 73 65 | 20 66 6f 72 20 61 20 67 |r to use| for a g|
|00000120| 69 76 65 6e 20 4d 6f 76 | 69 65 2f 6d 65 64 69 61 |iven Mov|ie/media|
|00000130| 20 6f 6e 6c 79 20 62 61 | 73 65 64 20 6f 6e 20 74 | only ba|sed on t|
|00000140| 68 65 20 74 79 70 65 20 | 6f 66 20 74 68 65 20 64 |he type |of the d|
|00000150| 61 74 61 20 72 65 66 65 | 72 65 6e 63 65 20 6f 66 |ata refe|rence of|
|00000160| 20 74 68 65 20 6d 65 64 | 69 61 2e 20 4d 65 64 69 | the med|ia. Medi|
|00000170| 61 20 77 68 69 63 68 20 | 75 73 65 64 20 66 69 6c |a which |used fil|
|00000180| 65 73 20 77 65 20 61 73 | 73 69 67 6e 65 64 20 61 |es we as|signed a|
|00000190| 6e 20 d4 61 6c 69 73 d5 | 20 64 61 74 61 20 72 65 |n .alis.| data re|
|000001a0| 66 65 72 65 6e 63 65 2c | 20 77 68 69 63 68 20 63 |ference,| which c|
|000001b0| 61 75 73 65 64 20 74 68 | 65 20 73 74 61 6e 64 61 |aused th|e standa|
|000001c0| 72 64 20 41 70 70 6c 65 | 20 44 61 74 61 20 48 61 |rd Apple| Data Ha|
|000001d0| 6e 64 6c 65 72 20 74 6f | 20 62 65 20 75 73 65 64 |ndler to| be used|
|000001e0| 20 74 6f 20 72 65 61 64 | 20 74 68 65 20 66 69 6c | to read| the fil|
|000001f0| 65 2e 20 49 66 20 61 6e | 6f 74 68 65 72 20 64 61 |e. If an|other da|
|00000200| 74 61 20 68 61 6e 64 6c | 65 72 20 77 61 73 20 74 |ta handl|er was t|
|00000210| 6f 20 62 65 20 75 73 65 | 64 2c 20 65 69 74 68 65 |o be use|d, eithe|
|00000220| 72 20 74 68 65 20 6d 6f | 76 69 65 20 68 61 64 20 |r the mo|vie had |
|00000230| 74 6f 20 62 65 20 63 68 | 61 6e 67 65 64 20 74 6f |to be ch|anged to|
|00000240| 20 63 6f 6e 74 61 69 6e | 20 61 20 64 61 74 61 20 | contain| a data |
|00000250| 72 65 66 65 72 65 6e 63 | 65 20 6f 66 20 61 20 64 |referenc|e of a d|
|00000260| 69 66 66 65 72 65 6e 74 | 20 74 79 70 65 20 6f 72 |ifferent| type or|
|00000270| 20 74 68 65 20 6f 74 68 | 65 72 20 64 61 74 61 20 | the oth|er data |
|00000280| 68 61 6e 64 6c 65 72 20 | 68 61 64 20 74 6f 20 6f |handler |had to o|
|00000290| 76 65 72 72 69 64 65 20 | 74 68 65 20 65 78 69 73 |verride |the exis|
|000002a0| 74 69 6e 67 20 41 70 70 | 6c 65 20 d4 61 6c 69 73 |ting App|le .alis|
|000002b0| d5 20 64 61 74 61 20 68 | 61 6e 64 6c 65 72 2c 20 |. data h|andler, |
|000002c0| 62 75 74 20 6f 6e 6c 79 | 20 66 6f 72 20 74 68 6f |but only| for tho|
|000002d0| 73 65 20 76 6f 6c 75 6d | 65 73 20 77 68 69 63 68 |se volum|es which|
|000002e0| 20 69 74 20 77 61 73 20 | 63 6f 6e 63 65 72 6e 65 | it was |concerne|
|000002f0| 64 20 77 69 74 68 2e 20 | 54 68 69 73 20 73 69 74 |d with. |This sit|
|00000300| 75 61 74 69 6f 6e 20 77 | 61 73 20 66 61 72 20 66 |uation w|as far f|
|00000310| 72 6f 6d 20 69 64 65 61 | 6c 2c 20 61 6e 64 20 70 |rom idea|l, and p|
|00000320| 61 72 74 69 63 75 6c 61 | 72 6c 79 20 6d 65 73 73 |articula|rly mess|
|00000330| 79 20 69 6e 20 61 6e 20 | 65 6e 76 69 72 6f 6e 6d |y in an |environm|
|00000340| 65 6e 74 20 77 68 65 72 | 65 20 6d 75 6c 74 69 70 |ent wher|e multip|
|00000350| 6c 65 20 64 61 74 61 20 | 68 61 6e 64 6c 65 72 73 |le data |handlers|
|00000360| 20 77 65 72 65 20 69 6e | 76 6f 6c 76 65 64 2e 0d | were in|volved..|
|00000370| 51 75 69 63 6b 54 69 6d | 65 20 6e 6f 77 20 61 6c |QuickTim|e now al|
|00000380| 6c 6f 77 73 20 61 20 64 | 61 74 61 20 68 61 6e 64 |lows a d|ata hand|
|00000390| 6c 65 72 20 74 6f 20 62 | 65 20 73 70 65 63 69 66 |ler to b|e specif|
|000003a0| 69 63 61 6c 6c 79 20 61 | 73 73 6f 63 69 61 74 65 |ically a|ssociate|
|000003b0| 64 20 77 69 74 68 20 61 | 20 70 61 72 74 69 63 75 |d with a| particu|
|000003c0| 6c 61 72 20 76 6f 6c 75 | 6d 65 20 28 65 76 65 6e |lar volu|me (even|
|000003d0| 20 61 20 70 61 72 74 69 | 63 75 6c 61 72 20 6b 69 | a parti|cular ki|
|000003e0| 6e 64 20 6f 66 20 66 69 | 6c 65 29 2e 20 54 68 69 |nd of fi|le). Thi|
|000003f0| 73 20 61 6c 6c 6f 77 73 | 20 6d 6f 76 69 65 73 20 |s allows| movies |
|00000400| 74 6f 20 62 65 20 6d 6f | 76 65 64 20 62 65 74 77 |to be mo|ved betw|
|00000410| 65 65 6e 20 76 61 72 69 | 6f 75 73 20 74 79 70 65 |een vari|ous type|
|00000420| 73 20 6f 66 20 64 65 76 | 69 63 65 73 20 77 69 74 |s of dev|ices wit|
|00000430| 68 6f 75 74 20 68 61 76 | 69 6e 67 20 74 6f 20 62 |hout hav|ing to b|
|00000440| 65 20 61 6c 74 65 72 65 | 64 20 69 6e 20 61 6e 79 |e altere|d in any|
|00000450| 77 61 79 2c 20 70 72 6f | 76 69 64 65 64 20 74 68 |way, pro|vided th|
|00000460| 61 74 20 74 68 65 20 64 | 65 76 69 63 65 73 20 61 |at the d|evices a|
|00000470| 6c 6c 20 61 70 70 65 61 | 72 20 61 73 20 61 20 76 |ll appea|r as a v|
|00000480| 6f 6c 75 6d 65 2e 20 46 | 75 72 74 68 65 72 6d 6f |olume. F|urthermo|
|00000490| 72 65 2c 20 69 74 20 69 | 73 20 6e 6f 74 20 6e 65 |re, it i|s not ne|
|000004a0| 63 65 73 73 61 72 79 20 | 74 6f 20 6f 76 65 72 72 |cessary |to overr|
|000004b0| 69 64 65 20 74 68 65 20 | 65 78 69 73 74 69 6e 67 |ide the |existing|
|000004c0| 20 d4 61 6c 69 73 d5 20 | 64 61 74 61 20 68 61 6e | .alis. |data han|
|000004d0| 64 6c 65 72 20 74 6f 20 | 61 63 68 69 65 76 65 20 |dler to |achieve |
|000004e0| 74 68 69 73 2e 0d 54 6f | 20 61 63 68 69 65 76 65 |this..To| achieve|
|000004f0| 20 74 68 69 73 2c 20 74 | 68 65 20 64 61 74 61 20 | this, t|he data |
|00000500| 68 61 6e 64 6c 65 72 20 | 6d 75 73 74 20 69 6d 70 |handler |must imp|
|00000510| 6c 65 6d 65 6e 74 20 74 | 77 6f 20 61 64 64 69 74 |lement t|wo addit|
|00000520| 69 6f 6e 61 6c 20 63 61 | 6c 6c 73 2e 20 54 68 65 |ional ca|lls. The|
|00000530| 20 66 69 72 73 74 20 63 | 61 6c 6c 20 6d 75 73 74 | first c|all must|
|00000540| 20 62 65 20 69 6d 70 6c | 65 6d 65 6e 74 65 64 20 | be impl|emented |
|00000550| 62 79 20 61 6c 6c 20 64 | 61 74 61 20 68 61 6e 64 |by all d|ata hand|
|00000560| 6c 65 72 73 2c 20 6e 6f | 74 20 6a 75 73 74 20 d4 |lers, no|t just .|
|00000570| 61 6c 69 73 d5 20 64 61 | 74 61 20 68 61 6e 64 6c |alis. da|ta handl|
|00000580| 65 72 73 2e 0d 70 61 73 | 63 61 6c 20 43 6f 6d 70 |ers..pas|cal Comp|
|00000590| 6f 6e 65 6e 74 52 65 73 | 75 6c 74 20 44 61 74 61 |onentRes|ult Data|
|000005a0| 48 43 61 6e 55 73 65 44 | 61 74 61 52 65 66 20 28 |HCanUseD|ataRef (|
|000005b0| 44 61 74 61 48 61 6e 64 | 6c 65 72 20 64 68 2c 20 |DataHand|ler dh, |
|000005c0| 48 61 6e 64 6c 65 20 64 | 61 74 61 52 65 66 2c 20 |Handle d|ataRef, |
|000005d0| 6c 6f 6e 67 20 2a 75 73 | 65 46 6c 61 67 73 29 0d |long *us|eFlags).|
|000005e0| 65 6e 75 6d 20 7b 0d 09 | 6b 44 61 74 61 48 43 61 |enum {..|kDataHCa|
|000005f0| 6e 52 65 61 64 20 3d 20 | 31 4c 3c 3c 30 2c 0d 09 |nRead = |1L<<0,..|
|00000600| 6b 44 61 74 61 48 53 70 | 65 63 69 61 6c 52 65 61 |kDataHSp|ecialRea|
|00000610| 64 20 3d 20 31 4c 3c 3c | 31 2c 0d 09 6b 44 61 74 |d = 1L<<|1,..kDat|
|00000620| 61 48 53 70 65 63 69 61 | 6c 52 65 61 64 46 69 6c |aHSpecia|lReadFil|
|00000630| 65 20 3d 20 31 4c 3c 3c | 32 2c 0d 09 6b 44 61 74 |e = 1L<<|2,..kDat|
|00000640| 61 48 43 61 6e 57 72 69 | 74 65 20 3d 20 31 4c 3c |aHCanWri|te = 1L<|
|00000650| 3c 33 2c 0d 09 6b 44 61 | 74 61 48 53 70 65 63 69 |<3,..kDa|taHSpeci|
|00000660| 61 6c 57 72 69 74 65 20 | 3d 20 31 3c 3c 34 2c 0d |alWrite |= 1<<4,.|
|00000670| 09 6b 44 61 74 61 48 53 | 70 65 63 69 61 6c 57 72 |.kDataHS|pecialWr|
|00000680| 69 74 65 46 69 6c 65 20 | 3d 20 31 3c 3c 35 2c 0d |iteFile |= 1<<5,.|
|00000690| 09 6b 44 61 74 61 48 43 | 61 6e 53 74 72 65 61 6d |.kDataHC|anStream|
|000006a0| 69 6e 67 57 72 69 74 65 | 20 3d 20 31 3c 3c 36 2c |ingWrite| = 1<<6,|
|000006b0| 0d 09 6b 44 61 74 61 48 | 4d 75 73 74 43 68 65 63 |..kDataH|MustChec|
|000006c0| 6b 44 61 74 61 52 65 66 | 20 3d 20 31 3c 3c 37 0d |kDataRef| = 1<<7.|
|000006d0| 7d 3b 0d 44 61 74 61 48 | 43 61 6e 55 73 65 44 61 |};.DataH|CanUseDa|
|000006e0| 74 61 52 65 66 20 20 69 | 73 20 70 61 73 73 65 64 |taRef i|s passed|
|000006f0| 20 61 20 64 61 74 61 20 | 72 65 66 65 72 65 6e 63 | a data |referenc|
|00000700| 65 20 61 6e 64 20 72 65 | 74 75 72 6e 73 20 66 6c |e and re|turns fl|
|00000710| 61 67 73 20 69 6e 64 69 | 63 61 74 69 6e 67 20 69 |ags indi|cating i|
|00000720| 74 73 20 61 62 69 6c 69 | 74 79 20 74 6f 20 61 63 |ts abili|ty to ac|
|00000730| 63 65 73 73 20 74 68 65 | 20 64 61 74 61 20 72 65 |cess the| data re|
|00000740| 66 65 72 65 6e 63 65 2e | 20 49 66 20 74 68 65 20 |ference.| If the |
|00000750| 64 61 74 61 20 72 65 66 | 65 72 65 6e 63 65 20 63 |data ref|erence c|
|00000760| 61 6e 6e 6f 74 20 62 65 | 20 72 65 61 64 20 74 6f |annot be| read to|
|00000770| 20 6f 72 20 77 72 69 74 | 74 65 6e 20 66 72 6f 6d | or writ|ten from|
|00000780| 2c 20 74 68 65 20 72 65 | 74 75 72 6e 65 64 20 66 |, the re|turned f|
|00000790| 6c 61 67 73 20 73 68 6f | 75 6c 64 20 62 65 20 73 |lags sho|uld be s|
|000007a0| 65 74 20 74 6f 20 30 2e | 0d 6b 44 61 74 61 48 43 |et to 0.|.kDataHC|
|000007b0| 61 6e 52 65 61 64 09 63 | 61 6e 20 72 65 61 64 20 |anRead.c|an read |
|000007c0| 66 72 6f 6d 20 74 68 69 | 73 20 64 61 74 61 20 72 |from thi|s data r|
|000007d0| 65 66 65 72 65 6e 63 65 | 09 0d 6b 44 61 74 61 48 |eference|..kDataH|
|000007e0| 53 70 65 63 69 61 6c 52 | 65 61 64 09 63 61 6e 20 |SpecialR|ead.can |
|000007f0| 72 65 61 64 20 66 72 6f | 6d 20 74 68 69 73 20 64 |read fro|m this d|
|00000800| 61 74 61 20 72 65 66 65 | 72 65 6e 63 65 20 75 73 |ata refe|rence us|
|00000810| 69 6e 67 20 61 20 73 70 | 65 63 69 61 6c 69 7a 65 |ing a sp|ecialize|
|00000820| 64 20 6d 65 74 68 6f 64 | 20 28 66 6f 72 20 65 78 |d method| (for ex|
|00000830| 61 6d 70 6c 65 2c 20 69 | 66 20 61 6e 20 48 46 53 |ample, i|f an HFS|
|00000840| 20 76 6f 6c 75 6d 65 2c | 20 74 68 69 73 20 77 6f | volume,| this wo|
|00000850| 75 6c 64 20 6d 65 61 6e | 20 72 65 61 64 69 6e 67 |uld mean| reading|
|00000860| 20 6f 74 68 65 72 20 74 | 68 61 6e 20 75 73 69 6e | other t|han usin|
|00000870| 67 20 46 69 6c 65 20 53 | 79 73 74 65 6d 20 63 61 |g File S|ystem ca|
|00000880| 6c 6c 73 29 09 0d 6b 44 | 61 74 61 48 53 70 65 63 |lls)..kD|ataHSpec|
|00000890| 69 61 6c 52 65 61 64 46 | 69 6c 65 09 63 61 6e 20 |ialReadF|ile.can |
|000008a0| 72 65 61 64 20 66 72 6f | 6d 20 74 68 69 73 20 64 |read fro|m this d|
|000008b0| 61 74 61 20 72 65 66 65 | 72 65 6e 63 65 20 75 73 |ata refe|rence us|
|000008c0| 69 6e 67 20 61 20 73 70 | 65 63 69 61 6c 69 7a 65 |ing a sp|ecialize|
|000008d0| 64 20 6d 65 74 68 6f 64 | 20 77 68 69 63 68 20 69 |d method| which i|
|000008e0| 73 20 73 70 65 63 69 66 | 69 63 20 74 6f 20 74 68 |s specif|ic to th|
|000008f0| 65 20 74 79 70 65 20 6f | 66 20 66 69 6c 65 20 62 |e type o|f file b|
|00000900| 65 69 6e 67 20 72 65 61 | 64 20 28 66 6f 72 20 65 |eing rea|d (for e|
|00000910| 78 61 6d 70 6c 65 20 61 | 20 48 79 70 65 72 43 61 |xample a| HyperCa|
|00000920| 72 64 20 73 74 61 63 6b | 20 6d 69 67 68 74 20 62 |rd stack| might b|
|00000930| 65 20 6d 6f 72 65 20 65 | 66 66 69 63 69 65 6e 74 |e more e|fficient|
|00000940| 6c 79 20 72 65 61 64 20 | 62 79 20 61 20 6d 65 74 |ly read |by a met|
|00000950| 68 6f 64 20 6f 74 68 65 | 72 20 74 68 61 6e 20 74 |hod othe|r than t|
|00000960| 68 61 74 20 75 73 65 64 | 20 62 79 20 74 68 65 20 |hat used| by the |
|00000970| 73 74 61 6e 64 61 72 64 | 20 44 61 74 61 20 48 61 |standard| Data Ha|
|00000980| 6e 64 6c 65 72 29 09 0d | 6b 44 61 74 61 48 43 61 |ndler)..|kDataHCa|
|00000990| 6e 57 72 69 74 65 09 63 | 61 6e 20 77 72 69 74 65 |nWrite.c|an write|
|000009a0| 20 74 6f 20 74 68 69 73 | 20 64 61 74 61 20 72 65 | to this| data re|
|000009b0| 66 65 72 65 6e 63 65 09 | 0d 6b 44 61 74 61 48 53 |ference.|.kDataHS|
|000009c0| 70 65 63 69 61 6c 57 72 | 69 74 65 09 63 61 6e 20 |pecialWr|ite.can |
|000009d0| 77 72 69 74 65 20 74 6f | 20 74 68 69 73 20 64 61 |write to| this da|
|000009e0| 74 61 20 72 65 66 65 72 | 65 6e 63 65 20 75 73 69 |ta refer|ence usi|
|000009f0| 6e 67 20 61 20 73 70 65 | 63 69 61 6c 69 7a 65 64 |ng a spe|cialized|
|00000a00| 20 6d 65 74 68 6f 64 20 | 28 66 6f 72 20 65 78 61 | method |(for exa|
|00000a10| 6d 70 6c 65 2c 20 61 20 | 73 70 65 63 69 61 6c 69 |mple, a |speciali|
|00000a20| 7a 65 64 20 6e 65 74 77 | 6f 72 6b 20 70 72 6f 74 |zed netw|ork prot|
|00000a30| 6f 63 6f 6c 29 09 0d 6b | 44 61 74 61 48 53 70 65 |ocol)..k|DataHSpe|
|00000a40| 63 69 61 6c 57 72 69 74 | 65 46 69 6c 65 20 09 28 |cialWrit|eFile .(|
|00000a50| 74 68 69 73 20 68 61 73 | 20 6e 6f 20 6d 65 61 6e |this has| no mean|
|00000a60| 69 6e 67 20 72 69 67 68 | 74 20 6e 6f 77 29 09 0d |ing righ|t now)..|
|00000a70| 6b 44 61 74 61 48 43 61 | 6e 53 74 72 65 61 6d 69 |kDataHCa|nStreami|
|00000a80| 6e 67 57 72 69 74 65 09 | 73 75 70 70 6f 72 74 73 |ngWrite.|supports|
|00000a90| 20 74 68 65 20 41 50 49 | 20 63 6f 6d 6d 61 6e 64 | the API| command|
|00000aa0| 73 20 66 6f 72 20 6d 6f | 76 69 65 20 63 61 70 74 |s for mo|vie capt|
|00000ab0| 75 72 65 09 0d 6b 44 61 | 74 61 48 4d 75 73 74 43 |ure..kDa|taHMustC|
|00000ac0| 68 65 63 6b 44 61 74 61 | 52 65 66 20 09 28 74 68 |heckData|Ref .(th|
|00000ad0| 69 73 20 66 6c 61 67 20 | 69 73 20 6f 6e 6c 79 20 |is flag |is only |
|00000ae0| 75 73 65 64 20 66 6f 72 | 20 74 68 65 20 44 61 74 |used for| the Dat|
|00000af0| 61 48 47 65 74 56 6f 6c | 75 6d 65 49 6e 66 6f 20 |aHGetVol|umeInfo |
|00000b00| 63 61 6c 6c 29 09 0d 0d | 54 68 65 20 73 74 61 6e |call)...|The stan|
|00000b10| 64 61 72 64 20 41 70 70 | 6c 65 20 d4 61 6c 69 73 |dard App|le .alis|
|00000b20| d5 20 44 61 74 61 20 48 | 61 6e 64 6c 65 72 20 72 |. Data H|andler r|
|00000b30| 65 74 75 72 6e 73 20 6b | 44 61 74 61 48 43 61 6e |eturns k|DataHCan|
|00000b40| 52 65 61 64 20 61 6e 64 | 20 6b 44 61 74 61 48 43 |Read and| kDataHC|
|00000b50| 61 6e 57 72 69 74 65 20 | 66 6f 72 20 61 6e 79 20 |anWrite |for any |
|00000b60| 64 61 74 61 20 72 65 66 | 65 72 65 6e 63 65 20 70 |data ref|erence p|
|00000b70| 61 73 73 65 64 20 74 6f | 20 69 74 2e 20 54 68 69 |assed to| it. Thi|
|00000b80| 73 20 69 6e 64 69 63 61 | 74 65 73 20 74 68 61 74 |s indica|tes that|
|00000b90| 20 69 74 20 69 73 20 61 | 62 6c 65 20 74 6f 20 73 | it is a|ble to s|
|00000ba0| 75 70 70 6f 72 74 20 72 | 65 61 64 69 6e 67 20 61 |upport r|eading a|
|00000bb0| 6e 64 20 77 72 69 74 69 | 6e 67 20 74 6f 20 61 6e |nd writi|ng to an|
|00000bc0| 79 20 76 6f 6c 75 6d 65 | 2e 20 41 20 64 61 74 61 |y volume|. A data|
|00000bd0| 20 68 61 6e 64 6c 65 72 | 20 77 68 69 63 68 20 70 | handler| which p|
|00000be0| 72 6f 76 69 64 65 64 20 | 73 70 65 63 69 61 6c 69 |rovided |speciali|
|00000bf0| 7a 65 64 20 61 63 63 65 | 73 73 20 74 6f 20 61 20 |zed acce|ss to a |
|00000c00| 70 61 72 74 69 63 75 6c | 61 72 20 76 6f 6c 75 6d |particul|ar volum|
|00000c10| 65 20 77 6f 75 6c 64 20 | 72 65 74 75 72 6e 20 30 |e would |return 0|
|00000c20| 20 66 6f 72 20 61 6e 79 | 20 64 61 74 61 20 72 65 | for any| data re|
|00000c30| 66 65 72 65 6e 63 65 20 | 72 65 66 65 72 65 6e 63 |ference |referenc|
|00000c40| 69 6e 67 20 61 20 76 6f | 6c 75 6d 65 20 77 68 69 |ing a vo|lume whi|
|00000c50| 63 68 20 64 69 64 20 6e | 6f 74 20 73 75 70 70 6f |ch did n|ot suppo|
|00000c60| 72 74 73 20 69 74 73 20 | 6e 65 74 77 6f 72 6b 69 |rts its |networki|
|00000c70| 6e 67 20 70 72 6f 74 6f | 63 6f 6c 2e 20 49 74 20 |ng proto|col. It |
|00000c80| 77 6f 75 6c 64 20 72 65 | 74 75 72 6e 20 6b 44 61 |would re|turn kDa|
|00000c90| 74 61 48 43 61 6e 52 65 | 61 64 20 61 6e 64 20 6b |taHCanRe|ad and k|
|00000ca0| 44 61 74 61 48 53 70 65 | 63 69 61 6c 52 65 61 64 |DataHSpe|cialRead|
|00000cb0| 20 66 6f 72 20 61 6e 79 | 20 76 6f 6c 75 6d 65 20 | for any| volume |
|00000cc0| 77 68 69 63 68 20 64 69 | 64 20 73 75 70 70 6f 72 |which di|d suppor|
|00000cd0| 74 20 69 74 73 20 6e 65 | 74 77 6f 72 6b 69 6e 67 |t its ne|tworking|
|00000ce0| 20 70 72 6f 74 6f 63 6f | 6c 20 28 69 66 20 69 74 | protoco|l (if it|
|00000cf0| 20 73 75 70 70 6f 72 74 | 65 64 20 77 72 69 74 69 | support|ed writi|
|00000d00| 6e 67 20 61 73 20 77 65 | 6c 6c 2c 20 69 74 20 77 |ng as we|ll, it w|
|00000d10| 6f 75 6c 64 20 73 65 74 | 20 6b 44 61 74 61 48 43 |ould set| kDataHC|
|00000d20| 61 6e 57 72 69 74 65 20 | 61 6e 64 20 6b 44 61 74 |anWrite |and kDat|
|00000d30| 61 48 53 70 65 63 69 61 | 6c 57 72 69 74 65 29 2e |aHSpecia|lWrite).|
|00000d40| 0d 54 68 65 20 41 70 70 | 6c 65 20 d4 61 6c 69 73 |.The App|le .alis|
|00000d50| d5 20 44 61 74 61 20 48 | 61 6e 64 6c 65 72 20 77 |. Data H|andler w|
|00000d60| 68 69 63 68 20 73 75 70 | 70 6f 72 74 73 20 6c 69 |hich sup|ports li|
|00000d70| 76 65 20 6d 6f 76 69 65 | 20 63 61 70 74 75 72 65 |ve movie| capture|
|00000d80| 2c 20 73 65 74 73 20 74 | 68 65 20 6b 44 61 74 61 |, sets t|he kData|
|00000d90| 48 43 61 6e 53 74 72 65 | 61 6d 69 6e 67 57 72 69 |HCanStre|amingWri|
|00000da0| 74 65 20 66 6c 61 67 20 | 74 6f 20 69 6e 64 69 63 |te flag |to indic|
|00000db0| 61 74 65 20 74 68 61 74 | 20 69 74 20 73 75 70 70 |ate that| it supp|
|00000dc0| 6f 72 74 73 20 74 68 65 | 20 41 50 49 20 6e 65 63 |orts the| API nec|
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|00006030| 4e 00 64 03 7d 01 47 00 | 9e 01 55 01 db 00 29 62 |N.d.}.G.|..U...)b|
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|000060d0| 20 41 20 64 61 74 61 20 | 68 61 6e 64 6c 65 72 20 | A data |handler |
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|000060f0| 64 04 05 01 63 00 3c 01 | 71 01 ec 00 2a 0e 4e 70 |d...c.<.|q...*.Np|
|00006100| 72 6f 76 69 64 65 64 20 | 73 70 65 63 69 61 6c 69 |rovided |speciali|
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|00006140| 20 66 6f 72 20 61 6e 79 | 20 64 61 74 61 00 a1 00 | for any| data...|
|00006150| 64 00 10 4f 4e 4c 4e 00 | 64 04 54 01 71 00 3c 01 |d..ONLN.|d.T.q.<.|
|00006160| 7f 01 c2 00 2a 0e 44 72 | 65 66 65 72 65 6e 63 65 |....*.Dr|eference|
|00006170| 20 72 65 66 65 72 65 6e | 63 69 6e 67 20 61 20 76 | referen|cing a v|
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|000061a0| 20 6e 65 74 77 6f 72 6b | 69 6e 67 00 a1 00 64 00 | network|ing...d.|
|000061b0| 10 4f 4e 4c 4e 00 64 04 | 99 01 7f 00 3c 01 8d 00 |.ONLN.d.|....<...|
|000061c0| c9 00 2a 0e 1a 70 72 6f | 74 6f 63 6f 6c 2e 20 49 |..*..pro|tocol. I|
|000061d0| 74 20 77 6f 75 6c 64 20 | 72 65 74 75 72 6e 20 00 |t would |return .|
|000061e0| 03 00 16 00 a1 00 64 00 | 10 4f 4e 4c 4e 00 64 04 |......d.|.ONLN.d.|
|000061f0| b3 01 7f 00 c9 01 8b 01 | 24 00 29 8d 0d 6b 44 61 |........|$.)..kDa|
|00006200| 74 61 48 43 61 6e 52 65 | 61 64 00 00 03 00 10 00 |taHCanRe|ad......|
|00006210| a1 00 64 00 10 4f 4e 4c | 4e 00 64 04 c0 01 7f 01 |..d..ONL|N.d.....|
|00006220| 24 01 8d 01 3f 00 29 5b | 05 20 61 6e 64 20 00 00 |$...?.)[|. and ..|
|00006230| 03 00 16 00 a1 00 64 00 | 10 4f 4e 4c 4e 00 64 04 |......d.|.ONLN.d.|
|00006240| c5 01 7f 01 3f 01 8b 01 | b6 00 29 1b 11 6b 44 61 |....?...|..)..kDa|
|00006250| 74 61 48 53 70 65 63 69 | 61 6c 52 65 61 64 00 00 |taHSpeci|alRead..|
|00006260| 03 00 10 00 a1 00 64 00 | 10 4f 4e 4c 4e 00 64 04 |......d.|.ONLN.d.|
|00006270| d6 01 7f 01 b6 01 8d 01 | e0 00 29 77 08 20 66 6f |........|..)w. fo|
|00006280| 72 20 61 6e 79 00 a1 00 | 64 00 10 4f 4e 4c 4e 00 |r any...|d..ONLN.|
|00006290| 64 04 df 01 8d 00 3c 01 | 9b 01 e6 00 28 01 b6 00 |d.....<.|....(...|
|000062a0| 5a 4c 76 6f 6c 75 6d 65 | 20 77 68 69 63 68 20 64 |ZLvolume| which d|
|000062b0| 69 64 20 73 75 70 70 6f | 72 74 20 69 74 73 20 6e |id suppo|rt its n|
|000062c0| 65 74 77 6f 72 6b 69 6e | 67 20 70 72 6f 74 6f 63 |etworkin|g protoc|
|000062d0| 6f 6c 20 28 69 66 20 69 | 74 20 73 75 70 70 6f 72 |ol (if i|t suppor|
|000062e0| 74 65 64 20 77 72 69 74 | 69 6e 67 20 61 73 00 00 |ted writ|ing as..|
|000062f0| a1 00 64 00 10 4f 4e 4c | 4e 00 64 05 2c 01 9b 00 |..d..ONL|N.d.,...|
|00006300| 3c 01 a9 00 9e 00 2a 0e | 13 77 65 6c 6c 2c 20 69 |<.....*.|.well, i|
|00006310| 74 20 77 6f 75 6c 64 20 | 73 65 74 20 00 00 03 00 |t would |set ....|
|00006320| 16 00 a1 00 64 00 10 4f | 4e 4c 4e 00 64 05 3f 01 |....d..O|NLN.d.?.|
|00006330| 9b 00 9e 01 a7 01 00 00 | 29 62 0e 6b 44 61 74 61 |........|)b.kData|
|00006340| 48 43 61 6e 57 72 69 74 | 65 00 03 00 10 00 a1 00 |HCanWrit|e.......|
|00006350| 64 00 10 4f 4e 4c 4e 00 | 64 05 4d 01 9b 01 00 01 |d..ONLN.|d.M.....|
|00006360| a9 01 1b 00 29 62 05 20 | 61 6e 64 20 00 00 03 00 |....)b. |and ....|
|00006370| 16 00 a1 00 64 00 10 4f | 4e 4c 4e 00 64 05 52 01 |....d..O|NLN.d.R.|
|00006380| 9b 01 1b 01 a7 01 99 00 | 29 1b 12 6b 44 61 74 61 |........|)..kData|
|00006390| 48 53 70 65 63 69 61 6c | 57 72 69 74 65 00 03 00 |HSpecial|Write...|
|000063a0| 10 00 a1 00 64 00 10 4f | 4e 4c 4e 00 64 05 64 01 |....d..O|NLN.d.d.|
|000063b0| 9b 01 99 01 a9 01 a0 00 | 29 7e 02 29 2e 00 a1 00 |........|)~.)....|
|000063c0| 64 00 10 4f 4e 4c 4e 00 | 64 05 67 01 b7 00 3c 01 |d..ONLN.|d.g...<.|
|000063d0| c5 00 7d 00 28 01 e0 00 | 5a 0b 54 68 65 20 41 70 |..}.(...|Z.The Ap|
|000063e0| 70 6c 65 20 d4 00 03 00 | 16 00 a1 00 64 00 10 4f |ple ....|....d..O|
|000063f0| 4e 4c 4e 00 64 05 72 01 | b7 00 7d 01 c3 00 99 00 |NLN.d.r.|..}.....|
+--------+-------------------------+-------------------------+--------+--------+
Only 25.0 KB of data is shown above.
