Initial community commit

Src/id3v2/id3_header.cpp

@@ -0,0 +1,98 @@
+// 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
+
+
+#include <string.h>
+#include <memory.h>
+#include "id3_header.h"
+#include "id3_error.h"
+
+
+static ID3_HeaderInfo ID3_VersionInfo[4][3] =
+{
+	// SIZEOF SIZEOF SIZEOF EXT EXT EXPERIM
+	// VER REV FRID FRSZ FRFL HEADER SIZE BIT
+	{
+		{ 2, 0, 3, 3, 0, false, 0, false },
+		{ 2, 1, 3, 3, 0, true, 8, true },
+		{0,},
+	},
+	{
+		{ 3, 0, 4, 4, 2, false, 10, false },
+		{0,},
+	},
+	{
+		{ 4, 0, 4, 4, 2, false, 10, false },
+		{0,},
+	},
+	{ 0 }
+};
+
+ID3_HeaderInfo *ID3_LookupHeaderInfo(uchar ver, uchar rev)
+{
+	ID3_HeaderInfo *info = NULL;
+	size_t v=0,r=0;
+
+	while (ID3_VersionInfo[v][0].version != 0)
+	{
+		r=0;
+		if (ID3_VersionInfo[v][0].version == ver)
+		{
+			while (ID3_VersionInfo[v][r].version != 0)
+			{
+				if (ID3_VersionInfo[v][r].revision == rev)
+				{
+					goto found;
+				}
+				else
+					r++;
+			}
+			// later revision.  still backwards compat so we'll stick with it.
+			r--;
+			goto found;
+		}
+		else
+			v++;
+	}
+found:
+
+	if (ID3_VersionInfo[v][r].version != 0)
+		info = &ID3_VersionInfo[v][r];
+
+	return info;
+}
+
+ID3_Header::ID3_Header(void)
+{
+	SetVersion(ID3_TAGVERSION, ID3_TAGREVISION);
+	dataSize = 0;
+	flags = 0;
+}
+
+void ID3_Header::SetVersion(uchar ver, uchar rev)
+{
+	version = ver;
+	revision = rev;
+	info = ID3_LookupHeaderInfo(version, revision);
+}
+
+void ID3_Header::SetDataSize(luint newSize)
+{
+	dataSize = newSize;
+}
+
+void ID3_Header::SetFlags(luint newFlags)
+{
+	flags = newFlags;
+}
+
+