Function cli_warn_think_max_downgraded

ds4_cli.c:218–226

static ds4_backend parse_backend(const char *s) {
    if (!strcmp(s, "metal")) return DS4_BACKEND_METAL;
#ifdef DS4_ROCM_BUILD
    if (!strcmp(s, "rocm")) return DS4_BACKEND_CUDA;
#else
    if (!strcmp(s, "cuda")) return DS4_BACKEND_CUDA;
#endif
    if (!strcmp(s, "cpu")) return DS4_BACKEND_CPU;
    fprintf(stderr, "ds4: invalid backend: %s\n", s);
#ifdef DS4_ROCM_BUILD
    fprintf(stderr, "ds4: valid backends are: metal, rocm, cpu\n");
#else
    fprintf(stderr, "ds4: valid backends are: metal, cuda, cpu\n");