This is a complete rewrite of the buffering portion of ThreadedFileWr…

…iter.

The implementation is simpler and will on average use less memory while  being able to expand the write buffer when necessary.

This could be more CPU efficient and could probably use a bit of tweaking.

mythtv/libs/libmythtv/NuppelVideoRecorder.cpp

@@ -2962,16 +2962,6 @@ void NuppelVideoRecorder::WriteVideo(VideoFrame *frame, bool skipsync,
         if (freecount < 5)
             raw = 1; // speed up the encode process
 
-        if (raw == 1 || compressthis == 0)
-        {
-            if (ringBuffer->IsIOBound())
-            {
-                /* need to compress, the disk can't handle any more bandwidth*/
-                raw=0;
-                compressthis=1;
-            }
-        }
-
         if (transcoding)
         {
             raw = 0;