X-Git-Url: https://git.nihav.org/?a=blobdiff_plain;f=nihav-qt%2Fsrc%2Fcodecs%2Fsmc.rs;h=b53ca5cff3ec638769299196096251e1f636c809;hb=886cde4847280b96e10d240c2f2d76abec121dc8;hp=401b3c49b6885461e341d12aaaca5d836aba57ba;hpb=6617c7576ec351996033c436c15f64ae2086ff1e;p=nihav.git

diff --git a/nihav-qt/src/codecs/smc.rs b/nihav-qt/src/codecs/smc.rs
index 401b3c4..b53ca5c 100644
--- a/nihav-qt/src/codecs/smc.rs
+++ b/nihav-qt/src/codecs/smc.rs
@@ -119,7 +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 {
@@ -131,6 +132,7 @@ impl NADecoder for SmcDecoder {
                             doff += stride * 4;
                         }
                     }
+                    blockpos += len;
                 },
                 3 => {
                     let clr             = br.read_byte()?;
@@ -291,6 +293,7 @@ mod test {
     use nihav_codec_support::test::dec_video::*;
     use crate::qt_register_all_decoders;
     use nihav_commonfmt::generic_register_all_demuxers;
+    // samples from https://samples.mplayerhq.hu/V-codecs/SMC
     #[test]
     fn test_smc() {
         let mut dmx_reg = RegisteredDemuxers::new();