From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Thu, 26 Mar 2020 14:11:58 +0000 (+0100)
Subject: vmd: ignore empty frames
X-Git-Url: https://git.nihav.org/?p=nihav.git;a=commitdiff_plain;h=5961ae1d4cd4b34cab545ef5b769005b854a1768

vmd: ignore empty frames
---

diff --git a/nihav-game/src/codecs/vmd.rs b/nihav-game/src/codecs/vmd.rs
index 3e002ea..21be388 100644
--- a/nihav-game/src/codecs/vmd.rs
+++ b/nihav-game/src/codecs/vmd.rs
@@ -180,6 +180,9 @@ impl VMDVideoDecoder {
                                                   br.read_skip(1)?;
         let flags                               = br.read_byte()?;
         let has_pal = (flags & 0x02) != 0;
+        if (frame_x == 0xFFFF) && (frame_y == 0xFFFF) && (frame_l == 0xFFFF) && (frame_d == 0xFFFF) {
+            return Ok(false);
+        }
         validate!(frame_l >= frame_x && frame_d >= frame_y);
         validate!(frame_l < self.width && frame_d < self.height);