Originally committed as revision 6030 to svn://svn.ffmpeg.org/ffmpeg/trunk
* @param color color of the arrow
*/
static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){
- int t, x, y, fr, f;
+ int x, y, fr, f;
sx= clip(sx, 0, w-1);
sy= clip(sy, 0, h-1);
if(ABS(ex - sx) > ABS(ey - sy)){
if(sx > ex){
- t=sx; sx=ex; ex=t;
- t=sy; sy=ey; ey=t;
+ SWAP(int, sx, ex);
+ SWAP(int, sy, ey);
}
buf+= sx + sy*stride;
ex-= sx;
}
}else{
if(sy > ey){
- t=sx; sx=ex; ex=t;
- t=sy; sy=ey; ey=t;
+ SWAP(int, sx, ex);
+ SWAP(int, sy, ey);
}
buf+= sx + sy*stride;
ey-= sy;
#define FFMAX(a,b) ((a) > (b) ? (a) : (b))
#define FFMIN(a,b) ((a) > (b) ? (b) : (a))
+#define SWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
+
/* misc math functions */
extern FF_IMPORT_ATTR const uint8_t ff_log2_tab[256];