static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt, enum HWAccelID selected_hwaccel_id) { int i; for (i = 0; hwaccels[i].name; i++) if (hwaccels[i].pix_fmt == pix_fmt && (!selected_hwaccel_id || selected_hwaccel_id == HWACCEL_AUTO || hwaccels[i].id == selected_hwaccel_id)) return &hwaccels[i]; return NULL; }