mirror of
https://github.com/jtgans/g13gui.git
synced 2025-06-20 08:23:50 -04:00
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
#include <cstdio>
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#include <iostream>
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#include <string.h>
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#include <string>
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using namespace std;
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// convert a .pbm raw file to our custom .lpbm format
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int main(int argc, char *argv[]) {
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unsigned char c;
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const int LEN = 256;
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char s[LEN];
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cin.getline(s, LEN);
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if (strncmp(s, "P4", 2)) {
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cerr << "input file is not .pbm (P4)" << endl;
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return -1;
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}
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cin.getline(s, LEN);
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while (s[0] == '#' || s[0] == ' ')
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cin.getline(s, LEN);
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unsigned int w = 0, h = 0;
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if (std::sscanf(s, "%d %d", &w, &h) != 2) {
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cerr << "height and width not found" << endl;
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return -1;
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}
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if (w != 160 || h != 43) {
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cerr << "incorrect width / height, mandated: 160x43, found: " << w << "x"
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<< h << endl;
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return -1;
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}
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cin >> noskipws;
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int i = 0, row = -1;
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unsigned char buf[160 * 48];
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memset(buf, 0, 160 * 43);
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while (cin >> c) {
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if (i % 20 == 0)
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row++;
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if (row == 8)
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row = 0;
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buf[7 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 0) & 0x01) << row;
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buf[6 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 1) & 0x01) << row;
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buf[5 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 2) & 0x01) << row;
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buf[4 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 3) & 0x01) << row;
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buf[3 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 4) & 0x01) << row;
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buf[2 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 5) & 0x01) << row;
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buf[1 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 6) & 0x01) << row;
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buf[0 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 7) & 0x01) << row;
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i++;
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}
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if (i != 160 * 43 / 8) {
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cerr << "wrong number of bytes, expected " << 160 * 43 / 8 << ", got " << i
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<< endl;
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}
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for (int i = 0; i < 160 * 48 / 8; i++) {
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cout << hex << (char)buf[i];
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}
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}
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