/** head of registered output format linked list */
static AVOutputFormat *first_oformat = NULL;
+static AVInputFormat **last_iformat = &first_iformat;
+static AVOutputFormat **last_oformat = &first_oformat;
+
AVInputFormat *av_iformat_next(AVInputFormat *f)
{
if (f)
void av_register_input_format(AVInputFormat *format)
{
- AVInputFormat **p = &first_iformat;
+ AVInputFormat **p = last_iformat;
format->next = NULL;
while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, format))
p = &(*p)->next;
+ last_iformat = &format->next;
}
void av_register_output_format(AVOutputFormat *format)
{
- AVOutputFormat **p = &first_oformat;
+ AVOutputFormat **p = last_oformat;
format->next = NULL;
while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, format))
p = &(*p)->next;
+ last_oformat = &format->next;
}
int av_match_ext(const char *filename, const char *extensions)