return AVERROR(ENOMEM);
*s = avio_alloc_context(buffer, buffer_size, h->flags & AVIO_FLAG_WRITE, h,
- (void*)ffurl_read, (void*)ffurl_write, (void*)ffurl_seek);
+ (int (*)(void *, uint8_t *, int)) ffurl_read,
+ (int (*)(void *, uint8_t *, int)) ffurl_write,
+ (int64_t (*)(void *, int64_t, int)) ffurl_seek);
if (!*s) {
av_free(buffer);
return AVERROR(ENOMEM);