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comparison ppm.c @ 1263:5f65a16c23ff

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Implement raw screenshot functionality requested in ticket:10
author Michael Pavone <pavone@retrodev.com>
date Sat, 04 Mar 2017 11:50:14 -0800
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1262:462d9770d467 1263:5f65a16c23ff
1 #include <stdint.h>
2 #include <stdio.h>
3
4 void save_ppm(FILE *f, uint32_t *buffer, uint32_t width, uint32_t height, uint32_t pitch)
5 {
6 fprintf(f, "P6\n%d %d\n255\n", width, height);
7 for(uint32_t y = 0; y < height; y++)
8 {
9 uint32_t *line = buffer;
10 for (uint32_t x = 0; x < width; x++, line++)
11 {
12 uint8_t buf[3] = {
13 *line >> 16, //red
14 *line >> 8, //green
15 *line //blue
16 };
17 fwrite(buf, 1, sizeof(buf), f);
18 }
19 buffer = buffer + pitch / sizeof(uint32_t);
20 }
21 }