Actually parse bdf directly, emit rom to be used for george-emu

Cargo.lock

@@ -3,56 +3,34 @@
 version = 3
 
 [[package]]
-name = "adler"
+name = "arrayvec"
-version = "1.0.2"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
+checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
 
 [[package]]
-name = "bdf"
+name = "bdf-parser"
-version = "0.6.0"
+version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f550a6818e6f42ccd5883f44e45fff4f68415a0d09abdc81e7d1d78e0780af14"
+checksum = "c904362ac94c74c5b55de49db4911ff01dbc220cf417bd08e75c4df56a443578"
 dependencies = [
- "bit-set",
+ "bstr",
+ "nom",
+ "strum",
  "thiserror",
 ]
 
-[[package]]
-name = "bit-set"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84527c7b0452f22545cc010e72d366a435561d2b28b978035550b3778c4d428d"
-dependencies = [
- "bit-vec",
-]
-
-[[package]]
-name = "bit-vec"
-version = "0.6.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349f9b6a179ed607305526ca489b34ad0a41aed5f7980fa90eb03160b69598fb"
-
 [[package]]
 name = "bitflags"
 version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
-[[package]]
-name = "bits"
-version = "0.1.0"
-dependencies = [
- "bdf",
- "bitvec",
- "png",
-]
-
 [[package]]
 name = "bitvec"
-version = "1.0.1"
+version = "0.19.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bc2832c24239b0141d5674bb9174f9d68a8b5b3f2753311927c172ca46f7e9c"
+checksum = "55f93d0ef3363c364d5976646a38f04cf67cfe1d4c8d160cdea02cab2c116b33"
 dependencies = [
  "funty",
  "radium",
@@ -60,104 +38,162 @@ dependencies = [
  "wyz",
 ]
 
+[[package]]
+name = "bstr"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba3569f383e8f1598449f1a423e72e99569137b47740b1da11ef19af3d5c3223"
+dependencies = [
+ "lazy_static",
+ "memchr",
+ "regex-automata",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
-[[package]]
-name = "crc32fast"
-version = "1.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
-dependencies = [
- "cfg-if",
-]
-
-[[package]]
-name = "fdeflate"
-version = "0.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4f9bfee30e4dedf0ab8b422f03af778d9612b63f502710fc500a334ebe2de645"
-dependencies = [
- "simd-adler32",
-]
-
-[[package]]
-name = "flate2"
-version = "1.0.28"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46303f565772937ffe1d394a4fac6f411c6013172fadde9dcdb1e147a086940e"
-dependencies = [
- "crc32fast",
- "miniz_oxide",
-]
-
 [[package]]
 name = "funty"
-version = "2.0.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6d5a32815ae3f33302d95fdcb2ce17862f8c65363dcfd29360480ba1001fc9c"
+checksum = "fed34cd105917e91daa4da6b3728c47b068749d6a62c59811f06ed2ac71d9da7"
 
 [[package]]
-name = "miniz_oxide"
+name = "george-font-converter"
-version = "0.7.2"
+version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d811f3e15f28568be3407c8e7fdb6514c1cda3cb30683f15b6a1a1dc4ea14a7"
 dependencies = [
- "adler",
+ "bdf-parser",
- "simd-adler32",
 ]
 
 [[package]]
-name = "png"
+name = "heck"
-version = "0.17.11"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f6c3c3e617595665b8ea2ff95a86066be38fb121ff920a9c0eb282abcd1da5a"
+checksum = "6d621efb26863f0e9924c6ac577e8275e5e6b77455db64ffa6c65c904e9e132c"
 dependencies = [
+ "unicode-segmentation",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "lexical-core"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6607c62aa161d23d17a9072cc5da0be67cdfc89d3afb1e8d9c842bebc2525ffe"
+dependencies = [
+ "arrayvec",
  "bitflags",
- "crc32fast",
+ "cfg-if",
- "fdeflate",
+ "ryu",
- "flate2",
+ "static_assertions",
- "miniz_oxide",
+]
+
+[[package]]
+name = "memchr"
+version = "2.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
+
+[[package]]
+name = "nom"
+version = "6.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7413f999671bd4745a7b624bd370a569fb6bc574b23c83a3c5ed2e453f3d5e2"
+dependencies = [
+ "bitvec",
+ "funty",
+ "lexical-core",
+ "memchr",
+ "version_check",
 ]
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.78"
+version = "1.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2422ad645d89c99f8f3e6b88a9fdeca7fabeac836b1002371c4367c8f984aae"
+checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.35"
+version = "1.0.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
+checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "radium"
-version = "0.7.0"
+version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
+checksum = "941ba9d78d8e2f7ce474c015eea4d9c6d25b6a3327f9832ee29a4de27f91bbb8"
 
 [[package]]
-name = "simd-adler32"
+name = "regex-automata"
-version = "0.3.7"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
+checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
+
+[[package]]
+name = "ryu"
+version = "1.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e86697c916019a8588c99b5fac3cead74ec0b4b819707a682fd4d23fa0ce1ba1"
+
+[[package]]
+name = "static_assertions"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
+
+[[package]]
+name = "strum"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7318c509b5ba57f18533982607f24070a55d353e90d4cae30c467cdb2ad5ac5c"
+dependencies = [
+ "strum_macros",
+]
+
+[[package]]
+name = "strum_macros"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee8bc6b87a5112aeeab1f4a9f7ab634fe6cbefc4850006df31267f4cfb9e3149"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
 
 [[package]]
 name = "syn"
-version = "2.0.48"
+version = "1.0.109"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f3531638e407dfc0814761abb7c00a5b54992b849452a0646b7f65c9f770f3f"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.58"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44cfb93f38070beee36b3fef7d4f5a16f27751d94b187b666a5cc5e9b0d30687"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -172,22 +208,22 @@ checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
 
 [[package]]
 name = "thiserror"
-version = "1.0.57"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e45bcbe8ed29775f228095caf2cd67af7a4ccf756ebff23a306bf3e8b47b24b"
+checksum = "03468839009160513471e86a034bb2c5c0e4baae3b43f79ffc55c4a5427b3297"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.57"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a953cb265bef375dae3de6663da4d3804eee9682ea80d8e2542529b73c531c81"
+checksum = "c61f3ba182994efc43764a46c018c347bc492c79f024e705f46567b418f6d4f7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.58",
 ]
 
 [[package]]
@@ -197,10 +233,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
 
 [[package]]
-name = "wyz"
+name = "unicode-segmentation"
-version = "0.5.1"
+version = "1.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05f360fc0b24296329c78fda852a1e9ae82de9cf7b27dae4b7f62f118f77b9ed"
+checksum = "d4c87d22b6e3f4a18d4d40ef354e97c90fcb14dd91d7dc0aa9d8a1172ebf7202"
-dependencies = [
+
- "tap",
+[[package]]
-]
+name = "version_check"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+
+[[package]]
+name = "wyz"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"

Cargo.toml

@@ -1,11 +1,9 @@
 [package]
-name = "bits"
+name = "george-font-converter"
 version = "0.1.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-bdf = "0.6.0"
+bdf-parser = "0.1.0"
-bitvec = "1.0.1"
-png = "0.17.11"

src/main.rs

@@ -1,58 +1,64 @@
 #![allow(clippy::println_empty_string)]
 use std::{
     fs::File,
-    io::{self, Write},
+    io::{Read, Write},
-    path::PathBuf,
+    ops::Neg,
     u8,
 };
 
-extern crate png;
+// takes all charaters in bdf and returns a vec of each character row byte in order, normalized to
+// width & height of the font (only works with 8 or fewer pixel wide fonts, should work for any height)
+fn bdf_to_vec(path: &str) -> Vec<u8> {
+    let mut bdf_vec = Vec::new();
+    let file = File::open(path).unwrap();
+    let mut bdf_font_bytes = Vec::new();
+    for byte in file.bytes() {
+        bdf_font_bytes.push(byte.unwrap());
+    }
+    let bdf_font = bdf_parser::BdfFont::parse(&bdf_font_bytes).unwrap();
+    for glyph in bdf_font.glyphs.iter() {
+        let glyph_offset_x = glyph.bounding_box.offset.x;
+        let glyph_offset_y = glyph.bounding_box.offset.y;
+        let glyph_height = glyph.bounding_box.size.y;
+        let font_height = bdf_font.metadata.bounding_box.size.y;
+        let font_offset_y = bdf_font.metadata.bounding_box.offset.y;
 
-const MAX_ROWS: usize = 13;
+        let top_space = font_height + font_offset_y - glyph_height - glyph_offset_y;
-const MAX_CHARS: u16 = 0x100; // Non inclusive, first char is 0x00
+        for _i in 0..top_space {
-
+            bdf_vec.push(0x00);
-fn to_bitmap(path: &str, max_chars: u16, max_rows: usize) -> Result<Vec<u8>, io::Error> {
-    let decoder = png::Decoder::new(File::open(path)?);
-    let mut reader = decoder.read_info()?;
-    let mut buf = vec![0; reader.output_buffer_size()];
-    let info = reader.next_frame(&mut buf)?;
-    let bytes = &buf[..info.buffer_size()];
-    let compressed: Vec<u8> = bytes.iter().step_by(4).cloned().collect(); // We're not using color, so we skip duplicate color components
-    let mut finalbuf = Vec::new();
-    for (i, _bit) in compressed.iter().step_by(8).enumerate() {
-        let mut byte = 0u8;
-        for j in (0..8).rev() {
-            if compressed[i * 8 + j] == 255 {
-                byte |= 0x80 >> j;
         }
-        }
+        for bitmap in glyph.bitmap.iter() {
-        finalbuf.push(byte);
+            bdf_vec.push(bitmap >> glyph_offset_x);
-    }
-    Ok(finalbuf)
         }
 
-fn reorder_bitmap(bitmap: &[u8]) -> Vec<u8> {
+        let bottom_space = font_offset_y.neg() + glyph_offset_y;
-    let mut reordered: Vec<u8> = Vec::new();
+        for _i in 0..bottom_space {
-    for row in 0..MAX_ROWS {
+            bdf_vec.push(0x00);
-        for character in 0x00..MAX_CHARS {
-            let mut byte = 0u8;
-            for i in 0..8 {
-                // character number + row offset & bitmask = pixel
-                if bitmap[character as usize + (row * 0xFF)] & 0x80 >> i > 0 {
-                    byte |= 0x80 >> i;
         }
     }
-            reordered.push(byte);
+    bdf_vec
-        }
-    }
-    reordered
 }
 
-fn main() -> std::io::Result<()> {
+// takes an vec of ordered characters and translates them for use with the character rom
-    let compressed = to_bitmap("./cozette.png", MAX_CHARS, MAX_ROWS)?;
+// TODO: make this work for any arbitrary char rom pin format using some kinda interface
-    let reordered = reorder_bitmap(&compressed);
+fn reorder_bitmap(bitmap: &[u8], font_height: usize) -> Vec<u8> {
-    let mut outfile = File::create("./cozette.bin")?;
+    let mut rom = vec![0; 0x8000]; // create vec the size of character rom
-    outfile.set_len(0xFFFF)?;
+
-    outfile.write_all(&reordered)?;
+    for row in 0..font_height {
-    Ok(())
+        for ascii_address in 0..u8::MAX {
+            // first 8 bits of address pick character
+            // next 5 bits pick row, and TODO: final 2 pick character set
+            let byte = bitmap[ascii_address as usize * font_height + row];
+            let rom_index: u16 = ((row as u16) << 8) + ascii_address as u16;
+            rom[rom_index as usize] = byte;
+        }
+    }
+    rom
+}
+
+fn main() {
+    let bits = bdf_to_vec("Cozette8-13.bdf");
+    let mut rom = File::create("./cozette.rom").unwrap();
+    let reordered = reorder_bitmap(&bits, 13);
+    rom.write_all(&reordered).unwrap();
 }