ThreadContext *c;
uint32_t threadid;
- if(!(s->thread_type & FF_THREAD_SLICE)){
- av_log(s, AV_LOG_WARNING, "The requested thread algorithm is not supported with this thread library.\n");
+ if (s->thread_type && !(s->thread_type & FF_THREAD_SLICE)) {
+ av_log(s, AV_LOG_WARNING,
+ "This thread library only supports FF_THREAD_SLICE"
+ " threading algorithm.\n");
return 0;
}