From 0a173d12ef7f8768fcdce04b7aecc81cc9349a93 Mon Sep 17 00:00:00 2001
From: lifning <>
Date: Wed, 24 Nov 2021 00:36:35 -0800
Subject: [PATCH] initial commit

---
 .gitignore  |    2 +
 Cargo.lock  | 1319 +++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |   32 ++
 src/main.rs |  141 ++++++
 4 files changed, 1494 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3a8cabc
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
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diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..55b50e0
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+ "cast",
+ "error-chain",
+ "image 0.13.0",
+ "lazy_static 0.2.11",
+ "log 0.3.9",
+ "nom",
+ "regex",
+ "safemem",
+]
+
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+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
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+ "zstd-safe",
+]
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+dependencies = [
+ "libc",
+ "zstd-sys",
+]
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+[[package]]
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+ "cc",
+ "libc",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..9ce4e72
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,32 @@
+[package]
+name = "emuladoor"
+version = "0.1.0"
+authors = ["lifning"]
+edition = "2021"
+
+[patch.'https://cybre.tech/lifning/ferretro.git']
+ferretro_base = { path = "../ferretro/ferretro_base" }
+ferretro_components = { path = "../ferretro/ferretro_components" }
+
+[dependencies.ferretro_components]
+git = "https://cybre.tech/lifning/ferretro.git"
+branch = "liffy/sdl2surf"
+
+[dependencies.anime_telnet]
+git = "https://github.com/alisww/anime-over-ansi"
+
+[dependencies.tokio]
+version = "1"
+features = ["sync"]
+
+[dependencies]
+structopt = "0.3"
+terminal_size = "0.1"
+sdl2 = "0.35"
+
+# must match the versions in anime_telnet:
+image = "0.23"
+fast_image_resize = "0.4.0"
+
+[features]
+static = ["ferretro_components/static"]
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..5613ec5
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,141 @@
+use std::path::PathBuf;
+
+use structopt::StructOpt;
+
+use ferretro_components::prelude::*;
+use ferretro_components::provided::stdlib::*;
+
+use anime_telnet::encoding::Encoder as AnsiArtEncoder;
+use anime_telnet::encoding::ProcessorPipeline;
+use anime_telnet::metadata::ColorMode;
+use fast_image_resize::FilterType;
+
+use image::RgbaImage;
+use sdl2::pixels::PixelFormatEnum;
+use sdl2::surface::Surface;
+use ferretro_components::base::ControlFlow;
+
+#[derive(StructOpt)]
+struct Opt {
+    /// Emulator core to use.
+    #[structopt(short, long, parse(from_os_str))]
+    core: PathBuf,
+    /// Path to ROM.
+    #[structopt(parse(from_os_str))]
+    rom: PathBuf,
+    /// Directory containing BIOS files
+    #[structopt(short, long, parse(from_os_str))]
+    system: Option<PathBuf>,
+}
+
+struct RetroFrameEncoder {
+    terminal_width: u32,
+    terminal_height: u32,
+    color_mode: ColorMode,
+}
+
+impl Default for RetroFrameEncoder {
+    fn default() -> Self {
+        use terminal_size::*;
+        let (Width(w), Height(h)) = terminal_size()
+            .unwrap_or((Width(80), Height(24)));
+        RetroFrameEncoder {
+            terminal_width: w as u32,
+            terminal_height: h as u32,
+            color_mode: ColorMode::EightBit,
+        }
+    }
+}
+
+impl AnsiArtEncoder for RetroFrameEncoder {
+    fn needs_width(&self) -> u32 {
+        self.terminal_width
+    }
+
+    fn needs_height(&self) -> u32 {
+        self.terminal_height * 2 // half-blocks?
+    }
+
+    fn needs_color(&self) -> ColorMode {
+        self.color_mode
+    }
+}
+
+struct AnsiVideoComponent {
+    processor: ProcessorPipeline,
+    encoder: RetroFrameEncoder,
+}
+
+impl Default for AnsiVideoComponent {
+    fn default() -> Self {
+        let encoder = RetroFrameEncoder::default();
+        let processor = ProcessorPipeline {
+            filter: FilterType::Hamming,
+            width: encoder.needs_width(),
+            height: encoder.needs_height(),
+            color_modes: Some(encoder.needs_color()).into_iter().collect(),
+        };
+        AnsiVideoComponent {
+            processor,
+            encoder,
+        }
+    }
+}
+
+impl RetroCallbacks for AnsiVideoComponent {
+    fn video_refresh(&mut self, frame: &VideoFrame) {
+        match frame {
+            VideoFrame::XRGB1555 { width, height, .. }
+            | VideoFrame::RGB565 { width, height, .. }
+            | VideoFrame::XRGB8888 { width, height, .. } => {
+                // dirty, but must be &mut for SDL API.
+                // safe as long as we don't leak the Surface we construct here.
+                let (bytes, pitch) = frame.data_pitch_as_bytes().unwrap();
+                let pitch = pitch as u32;
+                let format = match frame.pixel_format().unwrap() {
+                    PixelFormat::ARGB1555 => sdl2::pixels::PixelFormatEnum::RGB555,
+                    PixelFormat::ARGB8888 => sdl2::pixels::PixelFormatEnum::ARGB8888,
+                    PixelFormat::RGB565 => sdl2::pixels::PixelFormatEnum::RGB565,
+                };
+                let data = unsafe {
+                    core::slice::from_raw_parts_mut(bytes.as_ptr() as *mut u8, bytes.len())
+                };
+                if let Ok(surf) = Surface::from_data(data, *width, *height, pitch, format) {
+                    let rgba_raw = surf.into_canvas().unwrap().read_pixels(None, PixelFormatEnum::ABGR8888).unwrap();
+                    let rgba_img = RgbaImage::from_raw(*width, *height, rgba_raw).unwrap();
+                    let processed = self.processor.process(&rgba_img).into_iter().next().unwrap().1;
+                    println!("\x1B[0m\x1B[0J{}", self.encoder.encode_frame(&processed));
+                }
+            }
+            _ => {}
+        }
+    }
+}
+
+impl RetroComponent for AnsiVideoComponent {}
+
+fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+    let opt: Opt = Opt::from_args();
+    let mut emu = RetroComponentBase::new(&opt.core);
+    emu.register_component(AnsiVideoComponent::default())?;
+    emu.register_component(StatefulInputComponent::default())?;
+    emu.register_component(PathBufComponent {
+        sys_path: opt.system.clone(),
+        libretro_path: Some(opt.core.to_path_buf()),
+        core_assets_path: None,
+        save_path: Some(std::env::temp_dir()),
+    })?;
+    let mut vars_comp = VariableStoreComponent::default();
+    vars_comp.insert("mgba_skip_bios", "ON");
+    vars_comp.insert("mgba_sgb_borders", "OFF");
+    emu.register_component(vars_comp)?;
+    emu.register_component(SleepFramerateLimitComponent::default())?;
+
+    emu.init()?;
+    emu.load_game(&opt.rom)?;
+
+    while let ControlFlow::Continue = emu.run() {
+    }
+
+    Ok(())
+}