| 1 | /* GFX2mo5 - libraw2mo5.c
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| 2 | * CloudStrife - 20080921
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| 3 | * PulkoMandy - 20101221, 20130213
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| 4 | * Diffusé sous licence libre CeCILL v2
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| 5 | * Voir LICENCE
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| 6 | */
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| 7 |
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| 8 | #include <stdbool.h>
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| 9 | #include <stdint.h>
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| 10 | #include <stdio.h>
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| 11 | #include <stdlib.h>
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| 12 | #include <string.h>
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| 13 |
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| 14 | unsigned char *raw2mo5(unsigned char *input, int height, int fixup, bool to)
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| 15 | {
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| 16 | unsigned char *tmpBuffer;
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| 17 | int x,y;
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| 18 | int previous = 0;
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| 19 | bool lfo = false;
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| 20 | uint8_t val;
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| 21 |
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| 22 | tmpBuffer = (unsigned char*)calloc(0x4000,1);
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| 23 | if (tmpBuffer == NULL)
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| 24 | {
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| 25 | printf("Allocation tmpBuffer raté\n");
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| 26 | exit(4);
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| 27 | }
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| 28 | #define width 320
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| 29 |
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| 30 | for (y = 0; y < height; y++)
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| 31 | for (x = 0; x < 320; x+=8) {
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| 32 | int fore = 255;
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| 33 | int back = 255;
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| 34 | int pix;
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| 35 | bool oldlfo = lfo;
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| 36 |
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| 37 | for(pix = 0; pix < 8; pix++) {
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| 38 | int nc = input[y*width+x+pix];
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| 39 | if (nc > 15) printf("Color over limit!\n");
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| 40 | if (back == nc) {
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| 41 | // Pixel is in backcolor, set FORME to 0
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| 42 | lfo = false;
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| 43 | } else if (fore == nc) {
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| 44 | // Pixel is in forecolor, set FORME to 1
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| 45 | tmpBuffer[(y*320+x)/8] |= 0x80>>pix;
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| 46 | lfo = true;
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| 47 | } else if (back==255) {
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| 48 | // Pixel is in unknown color, back is free : allocate backcolor
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| 49 | back = nc;
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| 50 | lfo = false;
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| 51 | } else if (fore == 255) {
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| 52 | // Pixel is unknown color, back is allocated : allocate front and set FORME
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| 53 | fore = nc;
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| 54 | tmpBuffer[(y*320+x)/8] |= 0x80>>pix;
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| 55 | lfo = true;
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| 56 | } else {
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| 57 | printf("Color clash at %d %d : %d %d %d\n",x+pix,y,fore, back,
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| 58 | input[y*width+x+pix]);
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| 59 | }
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| 60 | }
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| 61 |
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| 62 | if (fore == 255) fore = fixup;
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| 63 | if (fore != 255) {
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| 64 | previous &= 0xF;
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| 65 | previous |= fore << 4;
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| 66 | }
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| 67 | if (back != 255) {
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| 68 | previous &= 0xF0;
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| 69 | previous |= back;
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| 70 | }
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| 71 |
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| 72 | // Make sure the last pixel of this GPL and the first of the next GPL
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| 73 | // are both FORME or both FOND, else we get an ugly glitch on the
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| 74 | // EFGJ033 Gate Array MO5!
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| 75 | val = tmpBuffer[(y*320+x)/8];
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| 76 | if(fixup > 0 && ((oldlfo == !(val & 0x80) && val != 0) || val == 0xFF))
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| 77 | {
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| 78 | previous = 7 | (previous << 4);
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| 79 | tmpBuffer[(y*320+x)/8] ^= 0xFF;
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| 80 |
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| 81 | lfo = !lfo;
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| 82 | }
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| 83 |
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| 84 | // TO8 mode
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| 85 | if(to)
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| 86 | {
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| 87 | previous = (previous & 0x7) | ((previous & 0xF0) >> 1) | ((previous & 0x8) << 4);
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| 88 | previous ^= 0xC0;
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| 89 | }
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| 90 |
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| 91 | tmpBuffer[0x2000+(y*320+x)/8] = previous;
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| 92 | }
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| 93 |
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| 94 | return tmpBuffer;
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| 95 | }
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