X-Git-Url: https://git.nihav.org/?a=blobdiff_plain;f=nihav-qt%2Fsrc%2Fcodecs%2Fsmc.rs;h=5364b08e680b3c7b0bbf2360d0bb7c5fb371e9d2;hb=3fae33bd60f5575e63cfb1beec82a56a036e47fb;hp=b78c46ba325dd0bcb8ab808e2fbe4646512d9dcf;hpb=78fb6560c73965d834b215fb0b49505ae5443288;p=nihav.git

diff --git a/nihav-qt/src/codecs/smc.rs b/nihav-qt/src/codecs/smc.rs
index b78c46b..5364b08 100644
--- a/nihav-qt/src/codecs/smc.rs
+++ b/nihav-qt/src/codecs/smc.rs
@@ -55,15 +55,14 @@ impl NADecoder for SmcDecoder {
             Err(DecoderError::InvalidData)
         }
     }
-    #[allow(clippy::cyclomatic_complexity)]
+    #[allow(clippy::cognitive_complexity)]
     fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
         let src = pkt.get_buffer();
         validate!(src.len() >= 2);
         let mut mr = MemoryReader::new_read(src.as_slice());
         let mut br = ByteReader::new(&mut mr);
 
-        let id                          = br.read_byte()?;
-        validate!(id == 0x80);
+        let _flags                      = br.read_byte()?;
         let length                      = br.read_u24be()? as usize;
         validate!(length == src.len());
 
@@ -120,7 +119,8 @@ impl NADecoder for SmcDecoder {
                     llblock = lblock;
                 },
                 2 => {
-                    for i in 0..len {
+                    validate!(blockpos + len * 2 <= nblocks);
+                    for i in 0..len*2 {
                         if (i & 1) == 0 {
                             Self::put_block(&mut frm.data[doff + x..], stride, &llblock);
                         } else {
@@ -132,6 +132,7 @@ impl NADecoder for SmcDecoder {
                             doff += stride * 4;
                         }
                     }
+                    blockpos += len;
                 },
                 3 => {
                     let clr             = br.read_byte()?;