1 files changed, 108 insertions, 0 deletions
diff --git a/Src/replicant/nsid3v2/extendedheader.cpp b/Src/replicant/nsid3v2/extendedheader.cpp
new file mode 100644
index 00000000..b0440ae7
--- /dev/null
+++ b/Src/replicant/nsid3v2/extendedheader.cpp
@@ -0,0 +1,108 @@
+#include "extendedheader.h"
+#include "util.h"
+#include <string.h>
+#include <stdlib.h>
+#include "foundation/error.h"
+
+ID3v2_21::ExtendedHeaderBase::ExtendedHeaderBase(const ID3v2::Header &_tagHeader) : tagHeader(_tagHeader)
+{
+	memset(&headerData, 0, sizeof(ExtendedHeaderData));
+	data = 0;
+	data_size = 0;
+}
+
+uint32_t ID3v2_21::ExtendedHeaderBase::Size() const
+{
+	return headerData.size;
+}
+
+int ID3v2_21::ExtendedHeaderBase::Parse(const void *_data, size_t len, size_t *bytes_read)
+{
+	if (len < SIZE)
+		return 1;
+
+	if (tagHeader.Unsynchronised())
+	{
+		*bytes_read = ID3v2::Util::UnsynchroniseTo(&headerData, _data, SIZE);
+	}
+	else
+	{
+		memcpy(&headerData, _data, SIZE);
+		*bytes_read = SIZE;
+	}
+
+	_data = (const uint8_t *)_data+SIZE;
+
+	/* read any data after the header */
+	data_size = Size();
+	if (data_size)
+	{
+		/* sanity check size */
+		if (tagHeader.Unsynchronised())
+		{
+			if (ID3v2::Util::UnsynchronisedInputSize(_data, data_size) > len)
+				return 1;
+		}
+		else if (data_size > len)
+			return 1;
+
+		/* allocate and read data */
+		data = malloc(data_size);
+		if (tagHeader.Unsynchronised())
+		{
+			*bytes_read += ID3v2::Util::UnsynchroniseTo(data, _data, data_size);
+		}
+		else
+		{
+			memcpy(data, _data, data_size);
+			*bytes_read += data_size;
+		}
+	}
+
+	return 0;
+}
+
+/* === ID3v2.3 === */
+ID3v2_3::ExtendedHeader::ExtendedHeader(const ID3v2::Header &_tagHeader) : ID3v2_21::ExtendedHeaderBase(_tagHeader)
+{
+}
+
+/* === ID3v2.4 === */
+ID3v2_4::ExtendedHeader::ExtendedHeader(const ID3v2::Header &_tagHeader) : ID3v2_21::ExtendedHeaderBase(_tagHeader)
+{
+}
+
+uint32_t ID3v2_4::ExtendedHeader::Size() const
+{
+	return ID3v2::Util::Int28To32(headerData.size);
+}
+
+int ID3v2_4::ExtendedHeader::Parse(const void *_data, size_t len, size_t *bytes_read)
+{
+	if (len < SIZE)
+		return 1;
+
+	memcpy(&headerData, _data, SIZE);
+	*bytes_read = SIZE;
+
+
+	_data = (const uint8_t *)_data+SIZE;
+
+	/* read any data after the header */
+	data_size = Size();
+	if (data_size)
+	{
+		/* sanity check size */
+		if (data_size > len)
+			return 1;
+
+		/* allocate and read data */
+		data = malloc(data_size);
+		if (!data)
+			return NErr_OutOfMemory;
+		memcpy(data, _data, data_size);
+		*bytes_read += data_size;
+	}
+
+	return 0;
+}