78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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//生成RGB24格式的彩条测试
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int main()
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{
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int width = 640;
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int height = 480;
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int barWidth = width/9;
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unsigned char *data = (unsigned char *)malloc(width*height*3);
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memset(data, 0, width*height*3);
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FILE *fp = fopen("./out/rgb24_colorbar_640x480.rgb", "wb+");
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for (int i=0; i<height; i++) {
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for (int j=0; j<width; j++) {
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int barIndex = j / barWidth;
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switch(barIndex){
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case 0://红
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data[(i*width + j)*3+0] = 255;
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data[(i*width + j)*3+1] = 0;
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data[(i*width + j)*3+2] = 0;
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break;
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case 1://橙
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data[(i*width + j)*3+0] = 255;
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data[(i*width + j)*3+1] = 156;
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data[(i*width + j)*3+2] = 0;
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break;
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case 2://黄
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data[(i*width + j)*3+0] = 255;
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data[(i*width + j)*3+1] = 255;
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data[(i*width + j)*3+2] = 0;
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break;
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case 3://绿
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data[(i*width + j)*3+0] = 0;
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data[(i*width + j)*3+1] = 255;
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data[(i*width + j)*3+2] = 0;
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break;
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case 4:// 青
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data[(i*width + j)*3+0] = 0;
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data[(i*width + j)*3+1] = 255;
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data[(i*width + j)*3+2] = 255;
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break;
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case 5://蓝
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data[(i*width + j)*3+0] = 0;
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data[(i*width + j)*3+1] = 0;
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data[(i*width + j)*3+2] = 255;
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break;
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case 6://紫
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data[(i*width + j)*3+0] = 255;
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data[(i*width + j)*3+1] = 0;
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data[(i*width + j)*3+2] = 255;
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break;
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case 7://白
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data[(i*width + j)*3+0] = 255;
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data[(i*width + j)*3+1] = 255;
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data[(i*width + j)*3+2] = 255;
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break;
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case 8://黑
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data[(i*width + j)*3+0] = 0;
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data[(i*width + j)*3+1] = 0;
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data[(i*width + j)*3+2] = 0;
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break;
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default:
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break;
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}
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}
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}
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fwrite(data, width*height*3, 1, fp);
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free(data);
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fclose(fp);
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return 0;
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} |