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annotate miscprog/fbdump2ppm.c @ 273:f233f0a012c9

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miscprog: fbdump2ppm program written, compiles
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 20 Jan 2018 20:46:08 +0000
parents
children 81641d82ccc6
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273
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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2 * This program converts a dump of TI's R2D framebuffer (176x220 pix, 16-bit)
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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3 * captured via fc-memdump into PPM format for viewing.
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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4 */
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5
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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6 #include <sys/types.h>
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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7 #include <stdio.h>
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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8 #include <stdlib.h>
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9
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Mychaela Falconia <falcon@freecalypso.org>
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10 #define NPIX (176*220)
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11
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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12 FILE *inf, *outf;
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13
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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14 convert_pixel()
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15 {
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16 int i, c;
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17 u_char inb[2];
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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18 unsigned pix16, r, g, b;
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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19
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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20 for (i = 0; i < 2; i++) {
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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21 c = getc(inf);
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22 if (c < 0) {
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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23 fprintf(stderr, "error: input is too short\n");
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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24 exit(1);
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25 }
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26 inb[i] = c;
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27 }
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28 pix16 = (inb[0] | (inb[1] << 8)) ^ 0xFFFF;
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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29 r = pix16 >> 11;
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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30 g = (pix16 >> 5) & 0x3F;
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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31 b = pix16 & 0x1F;
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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32 putc(r << 3, outf);
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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33 putc(g << 2, outf);
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34 putc(b << 3, outf);
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35 }
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36
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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37 main(argc, argv)
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38 char **argv;
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39 {
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40 unsigned n;
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41
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42 if (argc != 3) {
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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43 fprintf(stderr, "usage: %s infile outfile\n", argv[0]);
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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44 exit(1);
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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45 }
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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46 inf = fopen(argv[1], "r");
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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47 if (!inf) {
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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48 perror(argv[1]);
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
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49 exit(1);
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50 }
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Mychaela Falconia <falcon@freecalypso.org>
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51 outf = fopen(argv[2], "w");
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52 if (!outf) {
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53 perror(argv[2]);
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54 exit(1);
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55 }
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56 fprintf(outf, "P6\n176 220\n255\n");
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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57 for (n = 0; n < NPIX; n++)
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Mychaela Falconia <falcon@freecalypso.org>
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58 convert_pixel();
f233f0a012c9 miscprog: fbdump2ppm program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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59 exit(0);
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60 }