| 1 | #include <stdlib.h> |
| 2 | #include <stdio.h> |
| 3 | #include <stdint.h> |
| 4 | |
| 5 | #define RGB15(r, g, b) (((r) << (5+6)) | ((g) << 6) | (b)) |
| 6 | |
| 7 | void video_init(uint32_t width,uint32_t height, uint32_t f); |
| 8 | void video_close(); |
| 9 | void video_draw(uint16_t *pixels); |
| 10 | |
| 11 | |
| 12 | |
| 13 | void showbitmap( uint32_t wd, uint32_t ht, uint32_t f) { |
| 14 | int index; |
| 15 | uint16_t j,k; |
| 16 | uint8_t r,g,b; |
| 17 | uint16_t * bitmap; |
| 18 | |
| 19 | bitmap=malloc(wd*ht*sizeof(uint16_t)); |
| 20 | |
| 21 | b=16; |
| 22 | index=0; |
| 23 | for (j=0;j<ht;j++) { |
| 24 | r=(j*31)/(ht-1); |
| 25 | for (k=0; k<wd ; k++) { |
| 26 | g=(k*31)/(wd-1); |
| 27 | bitmap[index++]=RGB15(r,g,b); |
| 28 | } |
| 29 | } |
| 30 | bitmap[0]=0; |
| 31 | |
| 32 | video_init(wd,ht,f); |
| 33 | video_draw(bitmap); |
| 34 | sleep(5); |
| 35 | video_close(); |
| 36 | free(bitmap); |
| 37 | } |
| 38 | |
| 39 | int main(void) { |
| 40 | |
| 41 | showbitmap( 320, 240,0); |
| 42 | showbitmap( 320, 240,1); |
| 43 | showbitmap( 320, 240,2); |
| 44 | showbitmap( 240, 160,0); |
| 45 | showbitmap( 400, 272,0); |
| 46 | |
| 47 | return 0; |
| 48 | } |