mirror of https://github.com/JorjBauer/aiie.git
76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
#ifndef __FX80_H
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#define __FX80_H
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#include <stdint.h>
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/* maximum width, in dots, that we're supporting. The FX80 supported
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* up to 1920 ("quadruple density") -- which I'm not, b/c that's
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* overkill for what I'm doing at the moment. I'm supporting "double density"
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* (960 dots per 8-inch line).
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*
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* My general strategy here is to fill up a line with bits until the
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* printer thinks it needs to move to the next line; and then do
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* something with the bits (send them to a printer, a screen, a file,
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* whatever). This gets both graphics and text modes in one swell foop.
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*
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* There is the troublesome "9-pin graphics mode" where each column of
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* bits is > 1 byte of data; for that, we keep an extra "rowOfPin9"
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* bits, which is just a bit stream across the width. It would be
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* easier to make rowOfBits be uint16_t but it would consume more RAM,
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* and I'm trying to minimize that as I'm down to about 13k of free
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* space in the Teensy!
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*/
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#define FX80_MAXWIDTH 960
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#ifdef TEENSYDUINO
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class TeensyPrinter;
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#else
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class OpenCVPrinter;
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#endif
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class Fx80 {
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public:
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Fx80();
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~Fx80();
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void input(uint8_t c);
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void update();
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private:
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void lineFeed();
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void clearLine();
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void addCharacter(uint8_t c);
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void handleEscape(uint8_t c);
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void handleActiveEscapeMode(uint8_t c);
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void emitLine();
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protected:
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bool escapeMode;
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bool proportionalMode;
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uint16_t carriageDot; // what dot-column we are at
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// Line spacing. 1/216th of an inch is 1/3 of a dot, which is the minimum
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// supported by the FX-80. This is usually set in terms of 72nds, and
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// it's unlikely that I'll render anything at 1/216, but might as
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// well interpret it the way the printer understands it.
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// (That means 8/72, which is a setting of 24 here, is 8 dots tall.)
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uint16_t twoSixteenthsLineSpacing;
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uint16_t graphicsWidth;
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bool ninePinGraphics;
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uint8_t escapeModeActive;
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int32_t escapeModeExpectingBytes;
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uint8_t escapeModeLengthByteCount;
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uint16_t escapeModeLength;
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// 9 pixel-rows of (FX80_MAXWIDTH) bits (stuffed in 8-bit bytes)
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uint8_t rowOfBits[(FX80_MAXWIDTH/8)*9];
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};
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#endif
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