ref: af3ee88f832efb3a4e88101fa3e623108c575ff8
dir: /frame.h/
typedef struct Frame Frame;
struct Frame {
uvlong dt;
int w, h;
struct {
int left, top, right, bottom;
}crop;
u8int *yuv[3];
int ystride;
int uvstride;
u8int data[1];
};
Frame *newframe(int w, int h, u8int *yuv[3], int ystride, int vstride);