protected unsafe RomProjectInfo BuildProjectInfo(int[] songIds, string name, string author)
{
var projectInfo = new RomProjectInfo();
projectInfo.maxSong = (byte)(songIds.Length - 1);
Marshal.Copy(EncodeAndCenterString(name), 0, new IntPtr(projectInfo.name), 28);
Marshal.Copy(EncodeAndCenterString(author), 0, new IntPtr(projectInfo.author), 28);
return(projectInfo);
}
public unsafe static bool Save(Project originalProject, string filename, int[] songIds, string name, string author, bool pal)
{
try
{
if (songIds.Length == 0)
{
return(false);
}
Debug.Assert(!originalProject.UsesExpansionAudio || !pal);
if (songIds.Length > MaxSongs)
{
Array.Resize(ref songIds, MaxSongs);
}
var project = originalProject.DeepClone();
project.RemoveAllSongsBut(songIds);
project.SetExpansionAudio(Project.ExpansionNone);
var headerBytes = new byte[RomHeaderLength];
var codeBytes = new byte[RomCodeSize + RomTileSize];
// Load ROM header (16 bytes) + code/tiles (12KB).
Stream romBinStream = null;
string romName = "FamiStudio.Rom.rom";
romName += pal ? "_pal" : "_ntsc";
if (project.UsesFamiStudioTempo)
{
romName += "_tempo";
}
romName += ".nes";
romBinStream = typeof(RomFile).Assembly.GetManifestResourceStream(romName);
romBinStream.Read(headerBytes, 0, RomHeaderLength);
romBinStream.Seek(-RomCodeSize - RomTileSize, SeekOrigin.End);
romBinStream.Read(codeBytes, 0, RomCodeSize + RomTileSize);
// Build project info + song table of content.
var projectInfo = new RomProjectInfo();
projectInfo.maxSong = (byte)(songIds.Length - 1);
Marshal.Copy(EncodeAndCenterString(name), 0, new IntPtr(projectInfo.name), 28);
Marshal.Copy(EncodeAndCenterString(author), 0, new IntPtr(projectInfo.author), 28);
var songTable = new RomSongEntry[MaxSongs];
for (int i = 0; i < project.Songs.Count; i++)
{
fixed(RomSongEntry *songEntry = &songTable[i])
{
songEntry->page = 0;
songEntry->address = 0x8000;
Marshal.Copy(EncodeAndCenterString(project.Songs[i].Name), 0, new IntPtr(songEntry->name), 28);
}
}
// Gather DPCM + song data.
var songDataBytes = new List <byte>();
var dpcmBaseAddr = RomDpcmOffset;
// We will put samples right at the beginning.
if (project.UsesSamples)
{
// Since we keep the code/engine at f000 all the time, we are limited to 12KB of samples in ROM.
var totalSampleSize = project.GetTotalSampleSize();
var dpcmPageCount = Math.Min(MaxDpcmPages, (totalSampleSize + (RomPageSize - 1)) / RomPageSize);
// Otherwise we will allocate at least a full page for the samples and use the following mapping:
// 0KB - 4KB samples: starts at 0xe000
// 4KB - 8KB samples: starts at 0xd000
// 8KB - 12KB samples: starts at 0xc000
dpcmBaseAddr += (MaxDpcmPages - dpcmPageCount) * RomPageSize;
var dpcmBytes = project.GetPackedSampleData();
if (dpcmBytes.Length > (MaxDpcmPages * RomPageSize))
{
Array.Resize(ref dpcmBytes, MaxDpcmPages * RomPageSize);
}
songDataBytes.AddRange(dpcmBytes);
projectInfo.dpcmPageCount = (byte)dpcmPageCount;
projectInfo.dpcmPageStart = (byte)0;
}
// Export each song individually, build TOC at the same time.
for (int i = 0; i < project.Songs.Count; i++)
{
var song = project.Songs[i];
int page = songDataBytes.Count / RomPageSize;
int addr = RomMemoryStart + (songDataBytes.Count & (RomPageSize - 1));
var songBytes = new FamitoneMusicFile(FamitoneMusicFile.FamiToneKernel.FamiStudio).GetBytes(project, new int[] { song.Id }, addr, dpcmBaseAddr, MachineType.NTSC);
songTable[i].page = (byte)(page);
songTable[i].address = (ushort)(addr);
songTable[i].flags = (byte)(song.UsesDpcm ? 1 : 0);
songDataBytes.AddRange(songBytes);
}
//File.WriteAllBytes("D:\\debug.bin", songDataBytes.ToArray());
int numPrgBanks = RomMinSize / RomPrgBankSize;
if (songDataBytes.Count > (RomMinSize - RomCodeSize))
{
numPrgBanks = (songDataBytes.Count + (RomPrgBankSize - 1)) / RomPrgBankSize;
}
int padding = (numPrgBanks * RomPrgBankSize) - RomCodeSize - songDataBytes.Count;
songDataBytes.AddRange(new byte[padding]);
// Patch in code (project info and song table are at the beginning, 0xf000).
Marshal.Copy(new IntPtr(&projectInfo), codeBytes, 0, sizeof(RomProjectInfo));
for (int i = 0; i < MaxSongs; i++)
{
fixed(RomSongEntry *songEntry = &songTable[i])
Marshal.Copy(new IntPtr(songEntry), codeBytes, sizeof(RomProjectInfo) + i * sizeof(RomSongEntry), sizeof(RomSongEntry));
}
// Patch header.
headerBytes[RomHeaderPrgOffset] = (byte)numPrgBanks;
// Build final ROM and save.
var romBytes = new List <byte>();
romBytes.AddRange(headerBytes);
romBytes.AddRange(songDataBytes);
romBytes.AddRange(codeBytes);
File.WriteAllBytes(filename, romBytes.ToArray());
}
catch
{
return(false);
}
return(true);
}
