/// <summary>
/// Parse the section.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the section.</param>
/// <param name="index">The index of the first byte of the data portion.</param>
/// <returns>True if the section is an MHW2 category section; false otherwise.</returns>
internal bool Process(byte[] byteData, int index)
{
lastIndex = index;
if (byteData[lastIndex] != 0x01)
{
return(false);
}
lastIndex++;
categoryCount = (int)byteData[lastIndex];
lastIndex++;
try
{
int p1 = 0;
int p2 = 0;
string themeName = null;
for (int themeIndex = 0; themeIndex < categoryCount; themeIndex++)
{
p1 = ((byteData[lastIndex + (themeIndex * 2)] << 8) | byteData[lastIndex + 1 + (themeIndex * 2)]) + 3;
for (int descriptionIndex = 0; descriptionIndex <= (byteData[p1] & 0x3f); descriptionIndex++)
{
p2 = ((byteData[p1 + 1 + (descriptionIndex * 2)] << 8) | byteData[p1 + 2 + (descriptionIndex * 2)] + 3);
MediaHighwayCategoryEntry categoryEntry = new MediaHighwayCategoryEntry();
categoryEntry.Number = ((themeIndex & 0x3f) << 6) | (descriptionIndex & 0x3f);
if (descriptionIndex == 0)
{
themeName = Utils.GetString(byteData, p2 + 1, byteData[p2] & 0x1f, true).Trim();
categoryEntry.Description = themeName;
}
else
{
categoryEntry.Description = themeName + " " + Utils.GetString(byteData, p2 + 1, byteData[p2] & 0x1f, true).Trim();
}
Categories.Add(categoryEntry);
}
}
}
catch (IndexOutOfRangeException)
{
throw (new ArgumentOutOfRangeException("The MediaHighway2 Category Section message is short"));
}
Validate();
return(true);
}
/// <summary>
/// Parse the section.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the section.</param>
/// <param name="index">The index of the first byte of the data portion.</param>
internal void Process(byte[] byteData, int index)
{
int descriptionIndex = index + 16;
int categoryNumber = 0;
int categoryIndex = 0;
int categoryID = 0;
try
{
while (descriptionIndex < byteData.Length)
{
MediaHighwayCategoryEntry categoryEntry = new MediaHighwayCategoryEntry();
if (byteData[categoryID + 3] == categoryIndex)
{
categoryNumber = categoryID * 16;
categoryID++;
}
categoryEntry.Number = categoryNumber;
categoryEntry.Description = Utils.GetString(byteData, descriptionIndex, 15, true).Trim();
Categories.Add(categoryEntry);
descriptionIndex += 15;
categoryNumber++;
categoryIndex++;
}
}
catch (IndexOutOfRangeException)
{
throw (new ArgumentOutOfRangeException("The MediaHighway1 Category Section message is short"));
}
Validate();
}
/// <summary>
/// Parse the section.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the section.</param>
/// <param name="index">The index of the first byte of the data portion.</param>
internal void Process(byte[] byteData, int index)
{
int descriptionIndex = index + 16;
int categoryNumber = 0;
int categoryIndex = 0;
int categoryID = 0;
try
{
while (descriptionIndex < byteData.Length)
{
MediaHighwayCategoryEntry categoryEntry = new MediaHighwayCategoryEntry();
if (byteData[categoryID + 3] == categoryIndex)
{
categoryNumber = categoryID * 16;
categoryID++;
}
categoryEntry.Number = categoryNumber;
categoryEntry.Description = Utils.GetString(byteData, descriptionIndex, 15, true).Trim();
Categories.Add(categoryEntry);
descriptionIndex += 15;
categoryNumber++;
categoryIndex++;
}
}
catch (IndexOutOfRangeException)
{
throw (new ArgumentOutOfRangeException("The MediaHighway1 Category Section message is short"));
}
Validate();
}
/// <summary>
/// Parse the section.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the section.</param>
/// <param name="index">The index of the first byte of the data portion.</param>
/// <returns>True if the section is an MHW2 category section; false otherwise.</returns>
internal bool Process(byte[] byteData, int index)
{
lastIndex = index;
if (byteData[lastIndex] != 0x01)
return (false);
lastIndex++;
categoryCount = (int)byteData[lastIndex];
lastIndex++;
try
{
int p1 = 0;
int p2 = 0;
string themeName = null;
for (int themeIndex = 0; themeIndex < categoryCount; themeIndex++)
{
p1 = ((byteData[lastIndex + (themeIndex * 2)] << 8) | byteData[lastIndex + 1 + (themeIndex * 2)]) + 3;
for (int descriptionIndex = 0; descriptionIndex <= (byteData[p1] & 0x3f); descriptionIndex++)
{
p2 = ((byteData[p1 + 1 + (descriptionIndex * 2)] << 8) | byteData[p1 + 2 + (descriptionIndex * 2)] + 3);
MediaHighwayCategoryEntry categoryEntry = new MediaHighwayCategoryEntry();
categoryEntry.Number = ((themeIndex & 0x3f) << 6) | (descriptionIndex & 0x3f);
if (descriptionIndex == 0)
{
themeName = Utils.GetString(byteData, p2 + 1, byteData[p2] & 0x1f, true).Trim();
categoryEntry.Description = themeName;
}
else
categoryEntry.Description = themeName + " " + Utils.GetString(byteData, p2 + 1, byteData[p2] & 0x1f, true).Trim();
Categories.Add(categoryEntry);
}
}
}
catch (IndexOutOfRangeException)
{
throw (new ArgumentOutOfRangeException("The MediaHighway2 Category Section message is short"));
}
Validate();
return (true);
}
