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REFACTOR: Final cleanup of DiscImageChef.DiscImages.

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This commit is contained in:
Natalia Portillo
2017-12-24 00:12:31 +00:00
parent 536888507f
commit 736552f6d8
52 changed files with 5203 additions and 5359 deletions
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154
DiscImageChef.DiscImages/QED.cs
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@@ -42,107 +42,52 @@ namespace DiscImageChef.DiscImages
{
public class Qed : ImagePlugin
{
#region Internal constants
/// <summary>
/// Magic number: 'Q', 'E', 'D', 0x00
/// Magic number: 'Q', 'E', 'D', 0x00
/// </summary>
const uint QED_MAGIC = 0x00444551;
/// <summary>
/// Mask of unsupported incompatible features
/// Mask of unsupported incompatible features
/// </summary>
const ulong QED_FEATURE_MASK = 0xFFFFFFFFFFFFFFF8;
/// <summary>
/// File is differential (has a backing file)
/// File is differential (has a backing file)
/// </summary>
const ulong QED_FEATURE_BACKING_FILE = 0x01;
/// <summary>
/// Image needs a consistency check before writing
/// Image needs a consistency check before writing
/// </summary>
const ulong QED_FEATURE_NEEDS_CHECK = 0x02;
/// <summary>s
/// Backing file is a raw disk image
/// <summary>
/// s
/// Backing file is a raw disk image
/// </summary>
const ulong QED_FEATURE_RAW_BACKING = 0x04;
const int MAX_CACHE_SIZE = 16777216;
#endregion
#region Internal Structures
/// <summary>
/// QED header, big-endian
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct QedHeader
{
/// <summary>
/// <see cref="Qed.QED_MAGIC"/>
/// </summary>
public uint magic;
/// <summary>
/// Cluster size in bytes
/// </summary>
public uint cluster_size;
/// <summary>
/// L1 and L2 table size in cluster
/// </summary>
public uint table_size;
/// <summary>
/// Header size in clusters
/// </summary>
public uint header_size;
/// <summary>
/// Incompatible features
/// </summary>
public ulong features;
/// <summary>
/// Compatible features
/// </summary>
public ulong compat_features;
/// <summary>
/// Self-resetting features
/// </summary>
public ulong autoclear_features;
/// <summary>
/// Offset to L1 table
/// </summary>
public ulong l1_table_offset;
/// <summary>
/// Image size
/// </summary>
public ulong image_size;
/// <summary>
/// Offset inside file to string containing backing file
/// </summary>
public ulong backing_file_offset;
/// <summary>
/// Size of <see cref="backing_file_offset"/>
/// </summary>
public uint backing_file_size;
}
#endregion
QedHeader qHdr;
const uint MAX_CACHED_SECTORS = MAX_CACHE_SIZE / 512;
int clusterBits;
Dictionary<ulong, byte[]> clusterCache;
uint clusterSectors;
uint tableSize;
ulong[] l1Table;
Stream imageStream;
ulong l1Mask;
int l1Shift;
ulong[] l1Table;
ulong l2Mask;
ulong sectorMask;
int clusterBits;
Dictionary<ulong, ulong[]> l2TableCache;
uint maxClusterCache;
uint maxL2TableCache;
QedHeader qHdr;
Dictionary<ulong, byte[]> sectorCache;
Dictionary<ulong, byte[]> clusterCache;
Dictionary<ulong, ulong[]> l2TableCache;
const uint MAX_CACHED_SECTORS = MAX_CACHE_SIZE / 512;
uint maxL2TableCache;
uint maxClusterCache;
Stream imageStream;
ulong sectorMask;
uint tableSize;
public Qed()
{
@@ -330,8 +275,7 @@ namespace DiscImageChef.DiscImages
byte[] l2TableB = new byte[tableSize * 8];
imageStream.Read(l2TableB, 0, (int)tableSize * 8);
DicConsole.DebugWriteLine("QED plugin", "Reading L2 table #{0}", l1Off);
for(long i = 0; i < l2Table.LongLength; i++)
l2Table[i] = BitConverter.ToUInt64(l2TableB, (int)(i * 8));
for(long i = 0; i < l2Table.LongLength; i++) l2Table[i] = BitConverter.ToUInt64(l2TableB, (int)(i * 8));
if(l2TableCache.Count >= maxL2TableCache) l2TableCache.Clear();
@@ -457,7 +401,7 @@ namespace DiscImageChef.DiscImages
return ImageInfo.MediaType;
}
bool IsPowerOfTwo(uint x)
static bool IsPowerOfTwo(uint x)
{
while((x & 1) == 0 && x > 1) x >>= 1;
@@ -497,7 +441,6 @@ namespace DiscImageChef.DiscImages
return cnt;
}
#region Unsupported features
public override byte[] ReadSectorTag(ulong sectorAddress, SectorTagType tag)
{
throw new FeatureUnsupportedImageException("Feature not supported by image format");
@@ -658,6 +601,57 @@ namespace DiscImageChef.DiscImages
{
return null;
}
#endregion
/// <summary>
/// QED header, big-endian
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct QedHeader
{
/// <summary>
/// <see cref="Qed.QED_MAGIC" />
/// </summary>
public uint magic;
/// <summary>
/// Cluster size in bytes
/// </summary>
public uint cluster_size;
/// <summary>
/// L1 and L2 table size in cluster
/// </summary>
public uint table_size;
/// <summary>
/// Header size in clusters
/// </summary>
public uint header_size;
/// <summary>
/// Incompatible features
/// </summary>
public ulong features;
/// <summary>
/// Compatible features
/// </summary>
public ulong compat_features;
/// <summary>
/// Self-resetting features
/// </summary>
public ulong autoclear_features;
/// <summary>
/// Offset to L1 table
/// </summary>
public ulong l1_table_offset;
/// <summary>
/// Image size
/// </summary>
public ulong image_size;
/// <summary>
/// Offset inside file to string containing backing file
/// </summary>
public ulong backing_file_offset;
/// <summary>
/// Size of <see cref="backing_file_offset" />
/// </summary>
public uint backing_file_size;
}
}
}