FIND              193 libavfilter/vf_cropdetect.c         FIND(s->y1,                 0,               y < s->y1, +1, frame->linesize[0], bpp, frame->width);
FIND              194 libavfilter/vf_cropdetect.c         FIND(s->y2, frame->height - 1, y > FFMAX(s->y2, s->y1), -1, frame->linesize[0], bpp, frame->width);
FIND              195 libavfilter/vf_cropdetect.c         FIND(s->x1,                 0,               y < s->x1, +1, bpp, frame->linesize[0], frame->height);
FIND              196 libavfilter/vf_cropdetect.c         FIND(s->x2,  frame->width - 1, y > FFMAX(s->x2, s->x1), -1, bpp, frame->linesize[0], frame->height);