Starts synchronous block interface

oxydsp-flowgraph/src/block.rs

@@ -1,4 +1,7 @@
-use crate::edge::{AnonymousStreamConsumer, AnonymousStreamProducer, BlockIOIndex};
+use crate::{
+    edge::BlockIOIndex,
+    io::{AnonymousStreamConsumer, AnonymousStreamProducer},
+};
 
 pub enum BlockResult
 {
@@ -46,13 +49,18 @@ pub trait Block
     fn work(&mut self) -> BlockResult;
 }
 
-pub trait SyncBlock
+// Represents the input, output, state types
+// that a SyncBlock will have to interacti with
+pub trait SyncBlockIO
 {
+    type StateView;
     type Input;
     type Output;
-    type State;
+}
 
-    fn sync_work(state: &mut Self::State, input: Self::Input) -> Option<Self::Output>;
+pub trait SyncBlock: SyncBlockIO
+{
+    fn sync_work(state: Self::StateView, input: Self::Input) -> Option<Self::Output>;
 }
 
 pub trait GraphableBlock: Block + BlockIO {}