44 lines
798 B
C
44 lines
798 B
C
#ifndef __SCREEN_H__
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#define __SCREEN_H__
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#include "types.h"
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#define SCREEN_WIDTH (320)
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#define SCREEN_HEIGHT (256)
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struct ScreenSetup {
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// human entered
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uint16_t width;
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uint16_t height;
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short int bitplanes;
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// calculated
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unsigned char *memoryStart;
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uint16_t byteWidth;
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uint16_t nextBitplaneAdvance;
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uint16_t nextBufferAdvance;
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};
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struct CurrentScreen {
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uint16_t currentBuffer;
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uint16_t pixelWidth;
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uint16_t byteWidth;
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uint16_t pixelHeight;
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unsigned char *planes[8];
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};
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void setupScreen(
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struct ScreenSetup *screenSetup,
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uint16_t width,
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uint16_t height,
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uint8_t bitplanes
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);
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void teardownScreen(struct ScreenSetup *screenSetup);
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void setCurrentScreen(
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struct ScreenSetup *screenSetup,
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struct CurrentScreen *currentScreen,
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short int buffer
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);
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#endif
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