patterns: Improvements to NES & IPS, add SNES, NSF, NSFe (#455)

* Add credit to ne.hexpat * Add many changes to nes.hexpat * Fixing dependance on variables declared in if statement * Added mappers and inline to NES 2.0 header, removed needless parenthesises * Add files via upload * Add files via upload * Create nsf.hexpat * Used full name of the SNES on description * Add SNES, NSF & NSFe, new description for NES * Removing erroneous condition in ips.hexpat's truncatedSize * Removing unnecessary std.string import in ips.hexpat * Added both locations for sections in PE, clearer variable names, reorganized DOS stub * Delete patterns/nsfe.hexpat * Delete patterns/nsfmetadata.hexpat * Added chunks from NSFe to NSF * Added NSFe * Fix size of truncatedSize in ips.hexpat --------- Co-authored-by: Nik <werwolv98@gmail.com>
2026-03-27 23:37:04 -05:00 · 2025-12-05 17:15:50 -03:00
parent a525160243
commit 0d8bd76c2c
7 changed files with 1357 additions and 942 deletions
--- a/patterns/nsf.hexpat
+++ b/patterns/nsf.hexpat
@@ -0,0 +1,109 @@
+#pragma author gmestanley
+#pragma description NES Sound Format file
+
+import std.string;
+
+struct ChunkMetadata {
+	u32 length;
+	char ID[4];
+} [[inline]];
+
+struct TimeChunkData {
+	u32 trackLengths[while($<addressof(parent.metadata)+6+parent.metadata.length)];
+} [[inline]];
+
+fn formatMetadataName(str string) {
+    return "\"" + std::string::substr(string, 0, sizeof(string)-1) + "\"";
+};
+
+struct Name {
+	char trackName[] [[format("formatMetadataName")]];
+};
+
+struct TlblChunkData {
+	Name trackNames[while($<addressof(parent.metadata)+6+parent.metadata.length)];
+} [[inline]];
+
+struct AuthChunkData {
+	char gameTitle[] [[format("formatMetadataName")]];
+	char songwriting[] [[format("formatMetadataName")]];
+	char copyright[] [[format("formatMetadataName")]];
+	char ripper[] [[format("formatMetadataName")]];
+} [[inline]];
+
+struct TextChunkData {
+	char text[parent.metadata.length];
+} [[inline]];
+
+struct Chunk {
+	ChunkMetadata metadata;
+	if (metadata.ID == "time") TimeChunkData timeChunkData;
+	else if (metadata.ID == "text") TextChunkData textChunkData;
+	else if (metadata.ID == "tlbl") TlblChunkData tlblChunkData;
+	else if (metadata.ID == "auth") AuthChunkData authChunkData;
+	else u8 data[metadata.length];
+};
+
+bitfield NSF2Flags {
+    padding : 4;
+    irq : 1;
+    nonReturningInitNotUsed : 1;
+    playSubroutineNotUsed : 1;
+    playbackNSFeChunk : 1;
+};
+
+bitfield Region {
+    isPAL : 1;
+    palNTSCDual : 1;
+};
+
+enum ExtraSoundChipSupport : u8 {
+    None,
+    VRC6,
+    VRC7,
+    FDS = 4,
+    MMC5 = 8,
+    Namco163 = 16,
+    Sunsoft5B = 32,
+    VTxx = 64
+};
+
+fn formatName(str string) {
+    for (u8 nameIndex = 0, nameIndex < 32, nameIndex += 1) {
+        if (!$[$+nameIndex] || nameIndex == 31)
+            return "\"" + std::string::substr(string, 0, nameIndex) + "\"";
+    }
+};
+
+fn renderEOF(str value) {
+    return "\"NESM<EOF>\"";
+};
+
+struct Header {
+    char signature[5] [[format("renderEOF")]];
+    u8 version;
+    u8 songAmount;
+    u8 startingSong;
+    u16 dataLoadAddress;
+    u16 dataInitAddress;
+    u16 dataPlayAddress;
+    char gameName[32] [[format("formatName")]];
+    char songwriting[32] [[format("formatName")]];
+    char copyrightHolder[32] [[format("formatName")]];
+    u16 ntscPlaySpeed;
+    u8 bankswitchInitValues[8];
+    u16 palPlaySpeed;
+    Region region;
+    ExtraSoundChipSupport extraSoundChipSupport;
+    NSF2Flags nsf2flags;
+    u24 dataLength;
+};
+
+Header header @ 0x00;
+
+struct Chunks {
+    if (header.dataLength)
+    NSFEChunk chunks[while($<std::mem::size())];
+};
+
+Chunks metadata @ 0x80+header.dataLength;