Catch first frame corrupting unsigned count

User · Beirdo · commit c4ee599818c8 · 2011-11-29T11:41:30.000-08:00
Fixes #9801

Signed-off-by: Gavin Hurlbut &lt;ghurlbut@mythtv.org&gt;
diff --git a/mythtv/libs/libmythtv/nuppeldecoder.cpp b/mythtv/libs/libmythtv/nuppeldecoder.cpp
@@ -1124,7 +1124,8 @@ bool NuppelDecoder::GetFrame(DecodeType decodetype)
             else if (frameheader.comptype == 'V')
             {
                 lastKey = frameheader.timecode;
-                framesPlayed = frameheader.timecode - 1;
+                framesPlayed = (frameheader.timecode > 0 ?
+                                frameheader.timecode - 1 : 0);
 
                 if (!hasFullPositionMap)
                 {

Original file line number	Diff line number	Diff line change
`@@ -1124,7 +1124,8 @@ bool NuppelDecoder::GetFrame(DecodeType decodetype)`
`1124`	`1124`	`else if (frameheader.comptype == 'V')`
`1125`	`1125`	`{`
`1126`	`1126`	`lastKey = frameheader.timecode;`
`1127`		`- framesPlayed = frameheader.timecode - 1;`
	`1127`	`+ framesPlayed = (frameheader.timecode > 0 ?`
	`1128`	`+ frameheader.timecode - 1 : 0);`
`1128`	`1129`
`1129`	`1130`	`if (!hasFullPositionMap)`
`1130`	`1131`	`{`