From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Thu, 25 Jun 2020 09:35:49 +0000 (+0200)
Subject: nihav_core/deflate: recognize deflated stream header in uncompress()
X-Git-Url: https://git.nihav.org/?a=commitdiff_plain;h=1f50a8cf7cce96c3b2b67343dc57ca17854c0094;p=nihav.git

nihav_core/deflate: recognize deflated stream header in uncompress()
---

diff --git a/nihav-core/src/compr/deflate.rs b/nihav-core/src/compr/deflate.rs
index 89e8b68..fa318a4 100644
--- a/nihav-core/src/compr/deflate.rs
+++ b/nihav-core/src/compr/deflate.rs
@@ -716,7 +716,8 @@ impl Inflate {
     ///! Decompresses input data into output returning the uncompressed data length.
     pub fn uncompress(src: &[u8], dst: &mut [u8]) -> DecompressResult<usize> {
         let mut inflate = Self::new();
-        inflate.decompress_data(src, dst, false)
+        let off = if src.len() > 2 && src[0] == 0x78 && src[1] == 0x9C { 2 } else { 0 };
+        inflate.decompress_data(&src[off..], dst, false)
     }
 }