diff options
Diffstat (limited to 'NesFile.cs')
| -rw-r--r-- | NesFile.cs | 44 |
1 files changed, 28 insertions, 16 deletions
@@ -582,7 +582,7 @@ namespace com.clusterrr.Famicom.Containers }
/// <summary>
- /// Create NesFile object from raw .nes file data
+ /// Create NesFile object from raw .nes file contents
/// </summary>
/// <param name="data">Raw .nes file data</param>
public NesFile(byte[] data)
@@ -698,15 +698,20 @@ namespace com.clusterrr.Famicom.Containers /// Create NesFile object from raw .nes file contents
/// </summary>
/// <param name="data">Raw ROM data</param>
- public static NesFile FromBytes(byte[] data)
- {
- return new NesFile(data);
- }
+ /// <returns>NesFile object</returns>
+ public static NesFile FromBytes(byte[] data) => new NesFile(data);
/// <summary>
- /// Return iNES file contents (header + PRG + CHR)
+ /// Create NesFile object from the specified .nes file
/// </summary>
- /// <returns>iNES file contents</returns>
+ /// <param name="filename">Path to the .nes file</param>
+ /// <returns>NesFile object</returns>
+ public static NesFile FromFile(string filename) => new NesFile(filename);
+
+ /// <summary>
+ /// Returns .nes file contents (header + PRG + CHR)
+ /// </summary>
+ /// <returns>.nes file contents</returns>
public byte[] ToBytes()
{
var data = new List<byte>();
@@ -735,6 +740,16 @@ namespace com.clusterrr.Famicom.Containers if (length8k > 0xFF) throw new ArgumentOutOfRangeException("CHR size is too big for iNES, use NES 2.0 instead");
header[5] = (byte)Math.Ceiling((double)chr.Length / 0x2000);
chrSizePadded = header[5] * 0x2000UL;
+ switch (Mirroring)
+ {
+ case MirroringType.Unknown:
+ case MirroringType.Horizontal:
+ case MirroringType.Vertical:
+ case MirroringType.FourScreenVram:
+ break;
+ default:
+ throw new InvalidDataException($"{Mirroring} mirroring is not supported by iNES");
+ }
// Hard-wired nametable mirroring type
if (Mirroring == MirroringType.Vertical)
header[6] |= 1;
@@ -867,6 +882,12 @@ namespace com.clusterrr.Famicom.Containers return data.ToArray();
}
+ /// <summary>
+ /// Save as .nes file
+ /// </summary>
+ /// <param name="filename">Target filename</param>
+ public void Save(string filename) => File.WriteAllBytes(filename, ToBytes());
+
private static ulong ExponentToSize(byte exponent, byte multiplier)
=> (1UL << exponent) * (ulong)(multiplier * 2 + 1);
@@ -921,15 +942,6 @@ namespace com.clusterrr.Famicom.Containers }
/// <summary>
- /// Save iNES file
- /// </summary>
- /// <param name="fileName">Target filename</param>
- public void Save(string fileName)
- {
- File.WriteAllBytes(fileName, ToBytes());
- }
-
- /// <summary>
/// Calculate MD5 checksum of ROM (CHR+PRG without header)
/// </summary>
public byte[] CalculateMD5()
|