core/scale: optimise nearest-neighbour scaling

[nihav.git] / nihav-core / src / codecs / mod.rs

diff --git a/nihav-core/src/codecs/mod.rs b/nihav-core/src/codecs/mod.rs
index 311a45ee4165f6cb56567e8acef2b24e7cd57f12..7ce056db4143aa455420d6d39dd010a176b91897 100644 (file)
--- a/nihav-core/src/codecs/mod.rs
+++ b/nihav-core/src/codecs/mod.rs
@@ -255,6 +255,7 @@ impl Default for NADecoderSupport {
 pub trait NADecoder {
     fn init(&mut self, supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()>;
     fn decode(&mut self, supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef>;
+    fn flush(&mut self);
 }
 
 #[derive(Clone,Copy)]
@@ -263,7 +264,7 @@ pub struct DecoderInfo {
     pub get_decoder: fn () -> Box<dyn NADecoder>,
 }
 
-#[cfg(any(feature="h263"))]
+#[cfg(any(feature="blockdsp"))]
 pub mod blockdsp;
 
 #[cfg(feature="h263")]
@@ -293,3 +294,14 @@ impl RegisteredDecoders {
         self.decs.iter()
     }
 }
+
+pub const ZIGZAG: [usize; 64] = [
+     0,  1,  8, 16,  9,  2,  3, 10,
+    17, 24, 32, 25, 18, 11,  4,  5,
+    12, 19, 26, 33, 40, 48, 41, 34,
+    27, 20, 13,  6,  7, 14, 21, 28,
+    35, 42, 49, 56, 57, 50, 43, 36,
+    29, 22, 15, 23, 30, 37, 44, 51,
+    58, 59, 52, 45, 38, 31, 39, 46,
+    53, 60, 61, 54, 47, 55, 62, 63
+];