ref: fcf4838dbaf44d5cb8b00e417172208dc3ee5382
dir: /misc.h/
int str2fmt(char *s); uvlong nanosec(void); void yuv420_rgb24( int width, int height, u8int *y, u8int *u, u8int *v, u32int ystride, u32int uvstride, u8int *rgb, u32int rgbstride); extern int nproc; extern int debug;