Home » Archimedes archive » Archimedes World » AW-1995-07-Disc2.adf » AW0795_2 » PD/!Spr2Jpeg/Documents/History
PD/!Spr2Jpeg/Documents/History
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Archimedes World » AW-1995-07-Disc2.adf » AW0795_2 |
| Filename: | PD/!Spr2Jpeg/Documents/History |
| Read OK: | ✔ |
| File size: | 0584 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
History of Sprite 2 Jpeg
========================
0.01 -- Had idea, and designed templates. 24-Jan-95
1.00 -- Finished the first working version, which will now
correctly convert sprites into Jpegs. Will now work
on code to reverse the process, and to handle Clear
files. All is well. 3-Feb-95
1.01 -- Will compress Clear files into Jpegs.3-Feb-95
1.02 -- Finished a PBM -> Clear conversion algorithm (CFSI
can do the other one :-)
1.03 -- Cleaned up the frontend, can now handle many input
types. In fact, ? -> Jpeg is now finished. Only the
decompressor to do now.
1.04 -- Template overhaul, so all is now niceness. Decompess
options are fully incorporated, inc. save/load of
options. Just a small amount of code to go. I'll save
it for later this morning when I've had some sleep.
Still 3-Feb-95.
1.05 -- It's all finished ! It all works ! Decompressor done,
works fine (though the buffering on the PBM -> Clear
could use a little extra RAM). 3:45, 3-Feb-95.
1.06 -- Minor edits to the user interface - no big changes.
19-Feb-95.
1.07 -- Err... occasionally crashed due to lack of memory.
Also, minor oversight in Clear converter (didn't remove
some development code). Teensy buglet fix. 28-Apr-95. 00000000 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000010 20 20 20 20 20 48 69 73 74 6f 72 79 20 6f 66 20 | History of | 00000020 53 70 72 69 74 65 20 32 20 4a 70 65 67 0a 20 20 |Sprite 2 Jpeg. | 00000030 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000040 20 20 20 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d | =============| 00000050 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 0a 0a 30 2e 30 |===========..0.0| 00000060 31 20 20 2d 2d 20 20 48 61 64 20 69 64 65 61 2c |1 -- Had idea,| 00000070 20 61 6e 64 20 64 65 73 69 67 6e 65 64 20 74 65 | and designed te| 00000080 6d 70 6c 61 74 65 73 2e 20 32 34 2d 4a 61 6e 2d |mplates. 24-Jan-| 00000090 39 35 0a 31 2e 30 30 20 20 2d 2d 20 20 46 69 6e |95.1.00 -- Fin| 000000a0 69 73 68 65 64 20 74 68 65 20 66 69 72 73 74 20 |ished the first | 000000b0 77 6f 72 6b 69 6e 67 20 76 65 72 73 69 6f 6e 2c |working version,| 000000c0 20 77 68 69 63 68 20 77 69 6c 6c 20 6e 6f 77 0a | which will now.| 000000d0 20 20 20 20 20 20 20 20 20 20 63 6f 72 72 65 63 | correc| 000000e0 74 6c 79 20 63 6f 6e 76 65 72 74 20 73 70 72 69 |tly convert spri| 000000f0 74 65 73 20 69 6e 74 6f 20 4a 70 65 67 73 2e 20 |tes into Jpegs. | 00000100 57 69 6c 6c 20 6e 6f 77 20 77 6f 72 6b 0a 20 20 |Will now work. | 00000110 20 20 20 20 20 20 20 20 6f 6e 20 63 6f 64 65 20 | on code | 00000120 74 6f 20 72 65 76 65 72 73 65 20 74 68 65 20 70 |to reverse the p| 00000130 72 6f 63 65 73 73 2c 20 61 6e 64 20 74 6f 20 68 |rocess, and to h| 00000140 61 6e 64 6c 65 20 43 6c 65 61 72 0a 20 20 20 20 |andle Clear. | 00000150 20 20 20 20 20 20 66 69 6c 65 73 2e 20 41 6c 6c | files. All| 00000160 20 69 73 20 77 65 6c 6c 2e 20 33 2d 46 65 62 2d | is well. 3-Feb-| 00000170 39 35 0a 31 2e 30 31 20 20 2d 2d 20 20 57 69 6c |95.1.01 -- Wil| 00000180 6c 20 63 6f 6d 70 72 65 73 73 20 43 6c 65 61 72 |l compress Clear| 00000190 20 66 69 6c 65 73 20 69 6e 74 6f 20 4a 70 65 67 | files into Jpeg| 000001a0 73 2e 33 2d 46 65 62 2d 39 35 0a 31 2e 30 32 20 |s.3-Feb-95.1.02 | 000001b0 20 2d 2d 20 20 46 69 6e 69 73 68 65 64 20 61 20 | -- Finished a | 000001c0 50 42 4d 20 2d 3e 20 43 6c 65 61 72 20 63 6f 6e |PBM -> Clear con| 000001d0 76 65 72 73 69 6f 6e 20 61 6c 67 6f 72 69 74 68 |version algorith| 000001e0 6d 20 28 43 46 53 49 0a 20 20 20 20 20 20 20 20 |m (CFSI. | 000001f0 20 20 63 61 6e 20 64 6f 20 74 68 65 20 6f 74 68 | can do the oth| 00000200 65 72 20 6f 6e 65 20 3a 2d 29 0a 31 2e 30 33 20 |er one :-).1.03 | 00000210 20 2d 2d 20 20 43 6c 65 61 6e 65 64 20 75 70 20 | -- Cleaned up | 00000220 74 68 65 20 66 72 6f 6e 74 65 6e 64 2c 20 63 61 |the frontend, ca| 00000230 6e 20 6e 6f 77 20 68 61 6e 64 6c 65 20 6d 61 6e |n now handle man| 00000240 79 20 69 6e 70 75 74 0a 20 20 20 20 20 20 20 20 |y input. | 00000250 20 20 74 79 70 65 73 2e 20 49 6e 20 66 61 63 74 | types. In fact| 00000260 2c 20 3f 20 2d 3e 20 4a 70 65 67 20 69 73 20 6e |, ? -> Jpeg is n| 00000270 6f 77 20 66 69 6e 69 73 68 65 64 2e 20 4f 6e 6c |ow finished. Onl| 00000280 79 20 74 68 65 0a 20 20 20 20 20 20 20 20 20 20 |y the. | 00000290 64 65 63 6f 6d 70 72 65 73 73 6f 72 20 74 6f 20 |decompressor to | 000002a0 64 6f 20 6e 6f 77 2e 0a 31 2e 30 34 20 20 2d 2d |do now..1.04 --| 000002b0 20 20 54 65 6d 70 6c 61 74 65 20 6f 76 65 72 68 | Template overh| 000002c0 61 75 6c 2c 20 73 6f 20 61 6c 6c 20 69 73 20 6e |aul, so all is n| 000002d0 6f 77 20 6e 69 63 65 6e 65 73 73 2e 20 44 65 63 |ow niceness. Dec| 000002e0 6f 6d 70 65 73 73 0a 20 20 20 20 20 20 20 20 20 |ompess. | 000002f0 20 6f 70 74 69 6f 6e 73 20 61 72 65 20 66 75 6c | options are ful| 00000300 6c 79 20 69 6e 63 6f 72 70 6f 72 61 74 65 64 2c |ly incorporated,| 00000310 20 69 6e 63 2e 20 73 61 76 65 2f 6c 6f 61 64 20 | inc. save/load | 00000320 6f 66 0a 20 20 20 20 20 20 20 20 20 20 6f 70 74 |of. opt| 00000330 69 6f 6e 73 2e 20 4a 75 73 74 20 61 20 73 6d 61 |ions. Just a sma| 00000340 6c 6c 20 61 6d 6f 75 6e 74 20 6f 66 20 63 6f 64 |ll amount of cod| 00000350 65 20 74 6f 20 67 6f 2e 20 49 27 6c 6c 20 73 61 |e to go. I'll sa| 00000360 76 65 0a 20 20 20 20 20 20 20 20 20 20 69 74 20 |ve. it | 00000370 66 6f 72 20 6c 61 74 65 72 20 74 68 69 73 20 6d |for later this m| 00000380 6f 72 6e 69 6e 67 20 77 68 65 6e 20 49 27 76 65 |orning when I've| 00000390 20 68 61 64 20 73 6f 6d 65 20 73 6c 65 65 70 2e | had some sleep.| 000003a0 0a 20 20 20 20 20 20 20 20 20 20 53 74 69 6c 6c |. Still| 000003b0 20 33 2d 46 65 62 2d 39 35 2e 0a 31 2e 30 35 20 | 3-Feb-95..1.05 | 000003c0 20 2d 2d 20 20 49 74 27 73 20 61 6c 6c 20 66 69 | -- It's all fi| 000003d0 6e 69 73 68 65 64 20 21 20 49 74 20 61 6c 6c 20 |nished ! It all | 000003e0 77 6f 72 6b 73 20 21 20 44 65 63 6f 6d 70 72 65 |works ! Decompre| 000003f0 73 73 6f 72 20 64 6f 6e 65 2c 0a 20 20 20 20 20 |ssor done,. | 00000400 20 20 20 20 20 77 6f 72 6b 73 20 66 69 6e 65 20 | works fine | 00000410 28 74 68 6f 75 67 68 20 74 68 65 20 62 75 66 66 |(though the buff| 00000420 65 72 69 6e 67 20 6f 6e 20 74 68 65 20 50 42 4d |ering on the PBM| 00000430 20 2d 3e 20 43 6c 65 61 72 0a 20 20 20 20 20 20 | -> Clear. | 00000440 20 20 20 20 63 6f 75 6c 64 20 75 73 65 20 61 20 | could use a | 00000450 6c 69 74 74 6c 65 20 65 78 74 72 61 20 52 41 4d |little extra RAM| 00000460 29 2e 20 33 3a 34 35 2c 20 33 2d 46 65 62 2d 39 |). 3:45, 3-Feb-9| 00000470 35 2e 0a 31 2e 30 36 20 20 2d 2d 20 20 4d 69 6e |5..1.06 -- Min| 00000480 6f 72 20 65 64 69 74 73 20 74 6f 20 74 68 65 20 |or edits to the | 00000490 75 73 65 72 20 69 6e 74 65 72 66 61 63 65 20 2d |user interface -| 000004a0 20 6e 6f 20 62 69 67 20 63 68 61 6e 67 65 73 2e | no big changes.| 000004b0 0a 20 20 20 20 20 20 20 20 20 20 31 39 2d 46 65 |. 19-Fe| 000004c0 62 2d 39 35 2e 0a 31 2e 30 37 20 20 2d 2d 20 20 |b-95..1.07 -- | 000004d0 45 72 72 2e 2e 2e 20 6f 63 63 61 73 69 6f 6e 61 |Err... occasiona| 000004e0 6c 6c 79 20 63 72 61 73 68 65 64 20 64 75 65 20 |lly crashed due | 000004f0 74 6f 20 6c 61 63 6b 20 6f 66 20 6d 65 6d 6f 72 |to lack of memor| 00000500 79 2e 0a 20 20 20 20 20 20 20 20 20 20 41 6c 73 |y.. Als| 00000510 6f 2c 20 6d 69 6e 6f 72 20 6f 76 65 72 73 69 67 |o, minor oversig| 00000520 68 74 20 69 6e 20 43 6c 65 61 72 20 63 6f 6e 76 |ht in Clear conv| 00000530 65 72 74 65 72 20 28 64 69 64 6e 27 74 20 72 65 |erter (didn't re| 00000540 6d 6f 76 65 0a 20 20 20 20 20 20 20 20 20 20 73 |move. s| 00000550 6f 6d 65 20 64 65 76 65 6c 6f 70 6d 65 6e 74 20 |ome development | 00000560 63 6f 64 65 29 2e 20 54 65 65 6e 73 79 20 62 75 |code). Teensy bu| 00000570 67 6c 65 74 20 66 69 78 2e 20 32 38 2d 41 70 72 |glet fix. 28-Apr| 00000580 2d 39 35 2e |-95.| 00000584
.