Initial community commit

Src/id3v2/id3_field_integer.cpp

@@ -0,0 +1,81 @@
+// The authors have released ID3Lib as Public Domain (PD) and claim no copyright,
+// patent or other intellectual property protection in this work. This means that
+// it may be modified, redistributed and used in commercial and non-commercial
+// software and hardware without restrictions. ID3Lib is distributed on an "AS IS"
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
+// 
+// The ID3Lib authors encourage improvements and optimisations to be sent to the
+// ID3Lib coordinator, currently Dirk Mahoney (dirk@id3.org). Approved
+// submissions may be altered, and will be included and released under these terms.
+// 
+// Mon Nov 23 18:34:01 1998
+// improved/optimized/whatever 10/30/00 JF
+// improved/optimized/whatEVER jan-08-2006 benski
+
+#include "id3_field.h"
+
+#if 0 // taking out operators
+ID3_Field& ID3_Field::operator=(luint newData)
+{
+  Set(newData);
+
+  return *this;
+}
+#endif
+
+
+void ID3_Field::Set(luint newData)
+{
+  Clear();
+
+  data = reinterpret_cast<uchar *>(newData);
+  size = sizeof(luint);
+  type = ID3FTY_INTEGER;
+  hasChanged = true;
+}
+
+
+luint ID3_Field::Get(void)
+{
+  return (luint) data;
+}
+
+
+luint ID3_Field::ParseInteger(uchar *buffer, luint posn, luint buffSize)
+{
+  luint bytesUsed = 0;
+
+  if(buffer && buffSize)
+  {
+    luint i;
+    luint temp = 0;
+
+    bytesUsed = 4;
+
+    if(fixedLength != -1)
+      bytesUsed = MIN(fixedLength, bytesUsed);
+
+    for(i = 0; i < bytesUsed; i++)
+      temp |=(buffer[ posn + i ] <<(((bytesUsed - i) - 1) * 8));
+
+    Set(temp);
+    hasChanged = false;
+  }
+
+  return bytesUsed;
+}
+
+
+luint ID3_Field::RenderInteger(uchar *buffer)
+{
+  luint bytesUsed = 0;
+  luint length = BinSize();
+
+  for(luint i = 0; i < length; i++)
+    buffer[ i ] = (uchar)((((luint) data) >>(((length - i) - 1) * 8)) & 0xFF);
+
+  bytesUsed = length;
+  hasChanged = false;
+
+  return bytesUsed;
+}