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Rework subchannel helper methods

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This commit is contained in:
Matt Nadareski
2021-11-29 16:50:19 -08:00
parent 34d985d481
commit 78ef6d8511
1 changed files with 59 additions and 17 deletions
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76
RedBookPlayer.Models/Hardware/Player.cs
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@@ -1333,36 +1333,78 @@ namespace RedBookPlayer.Models.Hardware
#region Helpers
/// <summary>
/// Reformat raw subchannel data for multiple sectors
/// Parse multiple subchannels into object data
/// </summary>
/// <param name="subchannelData">Raw subchannel data to format</param>
/// <returns>Dictionary mapping subchannel to formatted data</returns>
public Dictionary<char, byte[]> ConvertSubchannels(byte[] subchannelData)
/// <returns>List of subchannel object data</returns>
private List<SubchannelData> ParseSubchannels(byte[] subchannelData)
{
if(subchannelData == null || subchannelData.Length % 96 != 0)
return null;
// Prepare the output formatted data
int modValue = subchannelData.Length / 96;
Dictionary<char, byte[]> formattedData = new Dictionary<char, byte[]>
{
['P'] = new byte[8 * modValue],
['Q'] = new byte[8 * modValue],
['R'] = new byte[8 * modValue],
['S'] = new byte[8 * modValue],
['T'] = new byte[8 * modValue],
['U'] = new byte[8 * modValue],
['V'] = new byte[8 * modValue],
['W'] = new byte[8 * modValue],
};
// Create the list of objects to return
var parsedSubchannelData = new List<SubchannelData>();
// Read in 96-byte chunks
int modValue = subchannelData.Length / 96;
for(int i = 0; i < modValue; i++)
{
byte[] buffer = new byte[96];
Array.Copy(subchannelData, i * 96, buffer, 0, 96);
var singleSubchannel = new SubchannelData(buffer);
Dictionary<char, byte[]> singleData = singleSubchannel.ConvertData();
parsedSubchannelData.Add(singleSubchannel);
}
return parsedSubchannelData;
}
/// <summary>
/// Reformat raw subchannel data for multiple sectors
/// </summary>
/// <param name="subchannelData">Raw subchannel data to format</param>
/// <returns>Dictionary mapping subchannel to formatted data</returns>
private Dictionary<char, byte[]> ConvertSubchannels(byte[] subchannelData)
{
if(subchannelData == null || subchannelData.Length % 96 != 0)
return null;
// Parse the subchannel data, if possible
var parsedSubchannelData = ParseSubchannels(subchannelData);
return ConvertSubchannels(parsedSubchannelData);
}
/// <summary>
/// Reformat subchannel object data for multiple sectors
/// </summary>
/// <param name="subchannelData">Subchannel object data to format</param>
/// <returns>Dictionary mapping subchannel to formatted data</returns>
private Dictionary<char, byte[]> ConvertSubchannels(List<SubchannelData> subchannelData)
{
if(subchannelData == null)
return null;
// Prepare the output formatted data
Dictionary<char, byte[]> formattedData = new Dictionary<char, byte[]>
{
['P'] = new byte[8 * subchannelData.Count],
['Q'] = new byte[8 * subchannelData.Count],
['R'] = new byte[8 * subchannelData.Count],
['S'] = new byte[8 * subchannelData.Count],
['T'] = new byte[8 * subchannelData.Count],
['U'] = new byte[8 * subchannelData.Count],
['V'] = new byte[8 * subchannelData.Count],
['W'] = new byte[8 * subchannelData.Count],
};
// Read in each object
for(int i = 0; i < subchannelData.Count; i++)
{
if(subchannelData[i] == null)
continue;
Dictionary<char, byte[]> singleData = subchannelData[i].ConvertData();
if(singleData == null)
continue;
Array.Copy(singleData['P'], 0, formattedData['P'], 8 * i, 8);
Array.Copy(singleData['Q'], 0, formattedData['Q'], 8 * i, 8);