Search found 2107 matches

by RWAP
Tue May 23, 2017 9:38 am
Forum: Software & Programming
Topic: QDT Freeware version
Replies: 38
Views: 2442

Re: QDT Freeware version

Is it worth asking Jim whether he will release the source code to QDT or maybe ask if he can perform some more work? I asked a year or so ago - he was loathe to release the source code because it was 'in a bit of a mess'. I am no longer involved in contacting software authors / copyright holders be...
by RWAP
Mon May 22, 2017 8:54 pm
Forum: Software & Programming
Topic: QDT Freeware version
Replies: 38
Views: 2442

Re: QDT Freeware version

We really do need the source code for QDT :( I have just found a bug, in trying to get Q-Route to run from a QDT folder. Q-Route is installed to win1_PRG_QROUTE_ If I set the parameter to win1_MAPS_BIG_BRITAIN.MAP, then press ESC and then click on the icon, the program automatically loads the Big Br...
by RWAP
Thu May 18, 2017 6:41 am
Forum: Software & Programming
Topic: Converting ESC/P2 output for modern printing
Replies: 58
Views: 4021

Re: Converting ESC/P2 output for modern printing

There are a couple of old projects which provide code for ESC/P emulation out there already but they tend to just be black and white printing. The code I have created sticks to the full ESC/P2 control set, so it can emulate any ESC/P2 printer - it is up to the machine generating the output as to how...
by RWAP
Wed May 17, 2017 9:06 pm
Forum: Software & Programming
Topic: Converting ESC/P2 output for modern printing
Replies: 58
Views: 4021

Re: Converting ESC/P2 output for modern printing

ESC/P2 was aimed at inkjets. Although there are only CMY and K colours to choose from, the set colour control code allows a value anyway of 0 (black), 1 (magenta), 2 (cyan), 3 (violet), 4 (yellow), 5 (red) and 6 (green). These can also be overprinted to give a wide range of colours in the output. As...
by RWAP
Wed May 17, 2017 7:56 pm
Forum: Software & Programming
Topic: Converting ESC/P2 output for modern printing
Replies: 58
Views: 4021

Re: Converting ESC/P2 output for modern printing

What are the sizes of the PNG and PDF being created? Are they being stored in RAM or written to a file on the SD card? If you're sending bytes to a file on an SD card, that can be very slow. When you copy a file, the size is known and the OS and SD card do a single write operation per block. If you...
by RWAP
Wed May 17, 2017 11:27 am
Forum: Software & Programming
Topic: Converting ESC/P2 output for modern printing
Replies: 58
Views: 4021

Re: Converting ESC/P2 output for modern printing

How long does generating the uncompressed bitmap take, without PNG and PDF creation? There should be a more direct way to get from uncompressed bitmap to PDF. Roughly 4 seconds to get so far as the write_png() function (so that is one page all converted). The write_png() function then takes 23 seco...
by RWAP
Wed May 17, 2017 7:17 am
Forum: Software & Programming
Topic: Converting ESC/P2 output for modern printing
Replies: 58
Views: 4021

Re: Converting ESC/P2 output for modern printing

If it is slow, it may be running as a single thread. Even then, if it is taking 90 seconds something is off. As I say - I am open to suggestions. The main delay occurs around: a) Writing the PNG image using libPNG b) The ImageMagick routine to convert the PNG to PDF which is incredibly slow for som...
by RWAP
Tue May 16, 2017 8:11 pm
Forum: Software & Programming
Topic: Identifying floppy disk images
Replies: 4
Views: 296

Re: Identifying floppy disk images

So far as I know all floppy disks use 512 sectors except for the ED floppies, as you say. However, the number of tracks cannot be assumed - there have been several utilities to change this either to squeeze extra data onto a DD disk, or to reduce the number of tracks and make disk copying quicker (T...
by RWAP
Tue May 16, 2017 2:33 pm
Forum: Software & Programming
Topic: Converting ESC/P2 output for modern printing
Replies: 58
Views: 4021

Re: Converting ESC/P2 output for modern printing

It would also have to hang in the middle and jam the print head to the side chewing up the paper...
by RWAP
Tue May 16, 2017 1:16 pm
Forum: Software & Programming
Topic: Converting ESC/P2 output for modern printing
Replies: 58
Views: 4021

Re: Raspberry Pi - A commercial use?

The Rasberry Pi takes about 1 1/2 minutes to convert a page at the moment which seems slow when testing, but is faster than a dot matrix printer :)

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