First stab at porting mplex

Original commit message from CVS:
First stab at porting mplex

1 files changed, 71 insertions, 0 deletions

diff --git a/ext/mplex/vector.hh b/ext/mplex/vector.hh
new file mode 100644
index 00000000..9a4f0413
--- /dev/null
+++ b/ext/mplex/vector.hh
@@ -0,0 +1,71 @@
+#ifndef __AUSTREAM_H__
+#define __AUSTREAM_H__
+
+#include <config.h>
+#include <deque>
+#include "mjpeg_logging.h"
+#include "aunit.hh"
+
+class AUStream
+{
+public:
+  AUStream ();
+
+  void init (Aunit * rec);
+
+  void append (Aunit & rec)
+  {
+    if (size == BUF_SIZE)
+      mjpeg_error_exit1 ("INTERNAL ERROR: AU buffer overflow");
+    *buf[cur_wr] = rec;
+    ++size;
+    ++cur_wr;
+    cur_wr = cur_wr >= BUF_SIZE ? 0 : cur_wr;
+  }
+
+  inline Aunit *next ()
+  {
+    if (size == 0) {
+      return 0;
+    } else {
+      Aunit *ret;
+
+      ret = buf[cur_rd];
+      ++cur_rd;
+      ++totalctr;
+      --size;
+      cur_rd = cur_rd >= BUF_SIZE ? 0 : cur_rd;
+      return ret;
+    }
+  }
+
+  inline Aunit *lookahead ()
+  {
+    return size == 0 ? 0 : buf[cur_rd];
+  }
+
+  inline Aunit *last ()
+  {
+    int i = cur_wr - 1 < 0 ? BUF_SIZE - 1 : cur_wr - 1;
+
+    return buf[i];
+  }
+
+  static const unsigned int BUF_SIZE = 128;
+
+  inline unsigned int current ()
+  {
+    return totalctr;
+  }
+//private:
+  unsigned int cur_rd;
+  unsigned int cur_wr;
+  unsigned int totalctr;
+  unsigned int size;
+  Aunit **buf;
+};
+
+
+
+
+#endif // __AUSTREAM_H__