DMF soundtrack module

Cargo.toml

@@ -10,3 +10,4 @@ edition = "2018"
 image = "^0.23"
 colour = "^0.5"
 clap = "^2.33"
+flate2 = "1.0.26"

src/main.rs

@@ -3,16 +3,17 @@ extern crate clap;
 #[macro_use]
 extern crate colour;
 
-use clap::{App, Arg, SubCommand};
-
 mod reskit;
+use std::error::Error;
+use clap::{App, Arg, SubCommand};
+use reskit::soundtrack::DmfModule;
 use reskit::utility;
 use reskit::tileset;
 
-fn main() {
+fn run() -> Result<(), Box<dyn Error>> {
     let matches = App::new( "reskit" )
-        .version( "0.0.1a" )
-        .author( "(c) 2021 Ashley N. <ne0ndrag0n@ne0ndrag0n.com>" )
+        .version( "0.0.2a" )
+        .author( "(c) 2021-2023 Ashley N. <ne0ndrag0n@ne0ndrag0n.com>" )
         .about( "Sega Megadrive resource kit and format converter" )
         .subcommand(
             SubCommand::with_name( "tileset" )
@@ -23,7 +24,7 @@ fn main() {
                     Arg::with_name( "FORMAT" )
                         .short( "f" )
                         .long( "format" )
-                        .help( "Specify output format for tileset (valid FORMAT options: bin, inc)")
+                        .help( "Specify output format for tileset (valid options: bin, inc)")
                         .default_value( "bin" )
                         .takes_value( true )
                 )
@@ -31,31 +32,63 @@ fn main() {
                     Arg::with_name( "TILEORDER" )
                         .short( "to" )
                         .long( "tile-order" )
-                        .help( "Specify tile order for tileset (valid TILEORDER options: tile, sprite" )
+                        .help( "Specify tile order for tileset (valid options: tile, sprite" )
                         .default_value( "tile" )
                         .takes_value( true )
                 )
         )
+        .subcommand(
+            SubCommand::with_name( "soundtrack" )
+                .about( "Generate an on-console soundtrack from a chiptune tracker module" )
+                .arg_from_usage( "-i, --input=<FILE> 'Specify input module'" )
+                .arg_from_usage( "-o, --output=<FILE> 'Specify output file'")
+                .arg(
+                    Arg::with_name( "TRACKER_FORMAT" )
+                        .short( "tf" )
+                        .long( "tracker-format" )
+                        .help( "Specify tracker module format (valid options: dmf (DefleMask Tracker))")
+                        .default_value( "dmf" )
+                        .takes_value( true )
+                )
+                .arg(
+                    Arg::with_name( "DRIVER_FORMAT" )
+                        .short( "df" )
+                        .long( "driver-format" )
+                        .help( "Specify console sound driver format (valid options: esf (Echo))")
+                        .default_value( "esf" )
+                        .takes_value( true )
+                )
+        )
         .get_matches();
 
-    // Get arguments for tileset
     if let Some( matches ) = matches.subcommand_matches( "tileset" ) {
-        // Get input and output filenames
-        if let Some( input_filename ) = matches.value_of( "input" ) {
-            if let Some( output_filename ) = matches.value_of( "output" ) {
-                return tileset::generate(
-                    input_filename,
-                    output_filename,
-                    matches.value_of( "FORMAT" ).unwrap(),
-                    matches.value_of( "TILEORDER" ).unwrap()
-                );
-            } else {
-                utility::print_error( "expected: output_filename (-o,--output)" );
-            }
-        } else {
-            utility::print_error( "expected: input filename (-i,--input)" );
-        }
-    }
+        let input_filename = matches.value_of( "input" ).ok_or( "expected: input filename (-i,--input)" )?;
+        let output_filename = matches.value_of( "output" ).ok_or( "expected: output_filename (-o,--output)" )?;
 
-    utility::print_error( "no plugin provided (try --help)" );
+        tileset::generate(
+            input_filename,
+            output_filename,
+            matches.value_of( "FORMAT" ).unwrap(),
+            matches.value_of( "TILEORDER" ).unwrap()
+        );
+
+        Ok( () )
+    } else if let Some( matches ) = matches.subcommand_matches( "soundtrack" ) {
+        let input_filename = matches.value_of( "input" ).ok_or( "expected: input filename (-i,--input)" )?;
+        let output_filename = matches.value_of( "output" ).ok_or( "expected: output_filename (-o,--output)" )?;
+
+        let result = DmfModule::from_file( &input_filename )?;
+
+        // TODO !!
+
+        Ok( () )
+    } else {
+        Err( "no tool provided (try --help)" )?
+    }
+}
+
+fn main() {
+    if let Err( error ) = run() {
+        utility::print_error( &format!( "{}", error ) );
+    }
 }

src/reskit/mod.rs

@@ -1,2 +1,3 @@
+pub mod soundtrack;
 pub mod tileset;
 pub mod utility;

src/reskit/soundtrack.rs

@@ -0,0 +1,144 @@
+use std::{error::Error, fs::File, io::Read, str::from_utf8, slice::Iter, convert::TryInto};
+use flate2::read::ZlibDecoder;
+
+const DMF_MAGIC_NUMBER: &'static str = ".DelekDefleMask.";
+const DMF_SUPPORTED_VERSION: u8 = 0x18;
+const DMF_MD: u8 = 0x02;
+const DMF_MD_ENHANCED_CH3: u8 = 0x42;
+
+#[derive(Debug)]
+pub enum FrameMode {
+    Ntsc,
+    Pal,
+    Custom( u8, u8, u8 )
+}
+
+pub struct DmfModule {
+    version: u8,
+    time_base: u8,
+    speed_a: u8,
+    speed_b: u8,
+    frame_mode: FrameMode,
+    rows_per_pattern: u32,
+    patterns: u8
+}
+
+fn get_string( bytes: &mut Iter<'_, u8>, take: usize ) -> Result<String, Box<dyn Error>> {
+    let took = bytes.take( take );
+    let took: Vec<u8> = took.cloned().collect();
+    let took = from_utf8( &took )?.to_string();
+
+    Ok( took )
+}
+
+fn get_u8( bytes: &mut Iter<'_, u8> ) -> Result<u8, Box<dyn Error>> {
+    let took = bytes.take( 1 ).cloned().next().ok_or( "invalid file: expected 1 byte" )?;
+
+    Ok( took )
+}
+
+fn get_u32( bytes: &mut Iter<'_, u8> ) -> Result<u32, Box<dyn Error>> {
+    let took = bytes.take( 4 );
+    let took: Vec<u8> = took.cloned().collect();
+    let took = u32::from_le_bytes( took[0..4].try_into()? );
+
+    Ok( took )
+}
+
+fn skip( bytes: &mut Iter<'_, u8>, by: usize ) {
+    for i in 0..by {
+        bytes.next();
+    }
+}
+
+impl DmfModule {
+
+    pub fn from_file( path: &str ) -> Result<DmfModule, Box<dyn Error>> {
+        let mut file = File::open( path )?;
+        let mut compressed: Vec<u8> = Vec::new();
+        file.read_to_end( &mut compressed )?;
+
+        let mut inflator = ZlibDecoder::new( &compressed[..] );
+        let mut bytes: Vec<u8> = Vec::new();
+        inflator.read_to_end( &mut bytes )?;
+
+        let mut bytes = bytes.iter();
+
+        if get_string( bytes.by_ref(), 16 )? != DMF_MAGIC_NUMBER {
+            return Err( format!( "invalid file: missing DMF header" ) )?
+        }
+
+        println!( ".DelekDefleMask. DMF file" );
+
+        let version = get_u8( bytes.by_ref() )?;
+        if version != DMF_SUPPORTED_VERSION {
+            return Err( format!( "invalid file: unsupported version: {}", version ) )?
+        }
+
+        let platform = get_u8( bytes.by_ref() )?;
+        match platform {
+            DMF_MD => println!( "Mode:\tSega Megadrive" ),
+            DMF_MD_ENHANCED_CH3 => println!( "Mode:\t\tSega Megadrive (Ext. Ch. 3 Mode)" ),
+            _ => return Err( "invalid file: invalid console format" )?
+        };
+
+        let song_name_len = get_u8( bytes.by_ref() )?;
+        println!( "Song name:\t{}", get_string( bytes.by_ref(), song_name_len.into() )? );
+
+        let song_author_len = get_u8( bytes.by_ref() )?;
+        println!( "Song author:\t{}", get_string( bytes.by_ref(), song_author_len.into() )? );
+
+        // Burn 2 bytes, don't care about the highlight patterns
+        skip( bytes.by_ref(), 2 );
+
+        // DMF format appears to subtract by 1 from the base time shown in the UI
+        // Base time is multiplied by speed_a and speed_b so setting it to 1 and
+        // getting 0 doesn't make any sense.
+        let time_base = get_u8( bytes.by_ref() )? + 1;
+        let speed_a = get_u8( bytes.by_ref() )?;
+        let speed_b = get_u8( bytes.by_ref() )?;
+
+        println!( "Time base:\t{}", time_base );
+        println!( "Speed A:\t{}", speed_a );
+        println!( "Speed B:\t{}", speed_b );
+
+        let frame_mode = match get_u8( bytes.by_ref() )? {
+            0 => FrameMode::Pal,
+            1 => FrameMode::Ntsc,
+            _ => return Err( "invalid file: invalid frame mode" )?
+        };
+
+        let custom_frame_mode = get_u8( bytes.by_ref() )? == 1;
+        let custom_frame_mode_hz_1 = get_u8( bytes.by_ref() )?;
+        let custom_frame_mode_hz_2 = get_u8( bytes.by_ref() )?;
+        let custom_frame_mode_hz_3 = get_u8( bytes.by_ref() )?;
+
+        let frame_mode = if custom_frame_mode {
+            FrameMode::Custom( custom_frame_mode_hz_1, custom_frame_mode_hz_2, custom_frame_mode_hz_3 )
+        } else {
+            frame_mode
+        };
+
+        println!( "Frame mode:\t{:?}", frame_mode );
+
+        let rows_per_pattern = get_u32( bytes.by_ref() )?;
+
+        println!( "Rows/pattern:\t{}", rows_per_pattern );
+
+        let patterns = get_u8( bytes.by_ref() )?;
+
+        println!( "Patterns:\t{}", patterns );
+
+        // TODO !!
+
+        Ok(
+            DmfModule { version, time_base, speed_a, speed_b, frame_mode, rows_per_pattern, patterns }
+         )
+    }
+
+    pub fn to_esf( self ) -> Result<Vec<u8>, Box<dyn Error>> {
+        // TODO !!
+        todo!()
+    }
+
+}