├── .gitignore
├── Cargo.lock
├── Cargo.toml
├── LICENSE
├── README.md
├── default_config.json
├── media
    └── demo.gif
└── src
    ├── backends
        ├── audio_to_grid.rs
        ├── crossterm
        │   └── mod.rs
        ├── mod.rs
        ├── termion
        │   ├── bars.rs
        │   ├── events.rs
        │   └── mod.rs
        └── wgpu
        │   ├── mesh.rs
        │   ├── mod.rs
        │   ├── shader.wgsl
        │   └── state.rs
    ├── config.rs
    └── main.rs


/.gitignore:
--------------------------------------------------------------------------------
1 | /target
2 | 


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2126 | checksum = "35600627b6c718ad0e23ed75fb6140bfe32cdf21c8f539ce3c9ab8180e2cb38e"
2127 | dependencies = [
2128 |  "arrayvec",
2129 |  "bitflags",
2130 |  "cfg_aliases",
2131 |  "copyless",
2132 |  "fxhash",
2133 |  "log",
2134 |  "naga",
2135 |  "parking_lot",
2136 |  "profiling",
2137 |  "raw-window-handle 0.3.4",
2138 |  "smallvec",
2139 |  "thiserror",
2140 |  "wgpu-hal",
2141 |  "wgpu-types",
2142 | ]
2143 | 
2144 | [[package]]
2145 | name = "wgpu-hal"
2146 | version = "0.11.5"
2147 | source = "registry+https://github.com/rust-lang/crates.io-index"
2148 | checksum = "af28b29ef0b44cd22dd9895d4349b9d5a687df42f58da234871198637eabe328"
2149 | dependencies = [
2150 |  "arrayvec",
2151 |  "ash",
2152 |  "bit-set",
2153 |  "bitflags",
2154 |  "block",
2155 |  "core-graphics-types",
2156 |  "d3d12",
2157 |  "foreign-types",
2158 |  "fxhash",
2159 |  "glow",
2160 |  "gpu-alloc",
2161 |  "gpu-descriptor",
2162 |  "inplace_it",
2163 |  "js-sys",
2164 |  "khronos-egl",
2165 |  "libloading 0.7.3",
2166 |  "log",
2167 |  "metal",
2168 |  "naga",
2169 |  "objc",
2170 |  "parking_lot",
2171 |  "profiling",
2172 |  "range-alloc",
2173 |  "raw-window-handle 0.3.4",
2174 |  "renderdoc-sys",
2175 |  "thiserror",
2176 |  "wasm-bindgen",
2177 |  "web-sys",
2178 |  "wgpu-types",
2179 |  "winapi",
2180 | ]
2181 | 
2182 | [[package]]
2183 | name = "wgpu-types"
2184 | version = "0.11.0"
2185 | source = "registry+https://github.com/rust-lang/crates.io-index"
2186 | checksum = "e15e44ba88ec415466e18e91881319e7c9e96cb905dc623305168aea65b85ccc"
2187 | dependencies = [
2188 |  "bitflags",
2189 | ]
2190 | 
2191 | [[package]]
2192 | name = "winapi"
2193 | version = "0.3.9"
2194 | source = "registry+https://github.com/rust-lang/crates.io-index"
2195 | checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
2196 | dependencies = [
2197 |  "winapi-i686-pc-windows-gnu",
2198 |  "winapi-x86_64-pc-windows-gnu",
2199 | ]
2200 | 
2201 | [[package]]
2202 | name = "winapi-i686-pc-windows-gnu"
2203 | version = "0.4.0"
2204 | source = "registry+https://github.com/rust-lang/crates.io-index"
2205 | checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
2206 | 
2207 | [[package]]
2208 | name = "winapi-util"
2209 | version = "0.1.5"
2210 | source = "registry+https://github.com/rust-lang/crates.io-index"
2211 | checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
2212 | dependencies = [
2213 |  "winapi",
2214 | ]
2215 | 
2216 | [[package]]
2217 | name = "winapi-x86_64-pc-windows-gnu"
2218 | version = "0.4.0"
2219 | source = "registry+https://github.com/rust-lang/crates.io-index"
2220 | checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
2221 | 
2222 | [[package]]
2223 | name = "winit"
2224 | version = "0.25.0"
2225 | source = "registry+https://github.com/rust-lang/crates.io-index"
2226 | checksum = "79610794594d5e86be473ef7763f604f2159cbac8c94debd00df8fb41e86c2f8"
2227 | dependencies = [
2228 |  "bitflags",
2229 |  "cocoa",
2230 |  "core-foundation 0.9.2",
2231 |  "core-graphics 0.22.3",
2232 |  "core-video-sys",
2233 |  "dispatch",
2234 |  "instant",
2235 |  "lazy_static",
2236 |  "libc",
2237 |  "log",
2238 |  "mio",
2239 |  "mio-misc",
2240 |  "ndk 0.3.0",
2241 |  "ndk-glue 0.3.0",
2242 |  "ndk-sys 0.2.2",
2243 |  "objc",
2244 |  "parking_lot",
2245 |  "percent-encoding",
2246 |  "raw-window-handle 0.3.4",
2247 |  "scopeguard",
2248 |  "smithay-client-toolkit",
2249 |  "wayland-client",
2250 |  "winapi",
2251 |  "x11-dl",
2252 | ]
2253 | 
2254 | [[package]]
2255 | name = "winit_input_helper"
2256 | version = "0.10.0"
2257 | source = "registry+https://github.com/rust-lang/crates.io-index"
2258 | checksum = "8d8af691f04e6d8a892e80a2176221b2c13d5832a8929d8c0fed1e3e3d4fe831"
2259 | dependencies = [
2260 |  "winit",
2261 | ]
2262 | 
2263 | [[package]]
2264 | name = "x11-dl"
2265 | version = "2.19.1"
2266 | source = "registry+https://github.com/rust-lang/crates.io-index"
2267 | checksum = "ea26926b4ce81a6f5d9d0f3a0bc401e5a37c6ae14a1bfaa8ff6099ca80038c59"
2268 | dependencies = [
2269 |  "lazy_static",
2270 |  "libc",
2271 |  "pkg-config",
2272 | ]
2273 | 
2274 | [[package]]
2275 | name = "xcursor"
2276 | version = "0.3.4"
2277 | source = "registry+https://github.com/rust-lang/crates.io-index"
2278 | checksum = "463705a63313cd4301184381c5e8042f0a7e9b4bb63653f216311d4ae74690b7"
2279 | dependencies = [
2280 |  "nom 7.1.0",
2281 | ]
2282 | 
2283 | [[package]]
2284 | name = "xdg"
2285 | version = "2.4.0"
2286 | source = "registry+https://github.com/rust-lang/crates.io-index"
2287 | checksum = "3a23fe958c70412687039c86f578938b4a0bb50ec788e96bce4d6ab00ddd5803"
2288 | dependencies = [
2289 |  "dirs",
2290 | ]
2291 | 
2292 | [[package]]
2293 | name = "xml-rs"
2294 | version = "0.8.4"
2295 | source = "registry+https://github.com/rust-lang/crates.io-index"
2296 | checksum = "d2d7d3948613f75c98fd9328cfdcc45acc4d360655289d0a7d4ec931392200a3"
2297 | 


--------------------------------------------------------------------------------
/Cargo.toml:
--------------------------------------------------------------------------------
 1 | [package]
 2 | name = "crav"
 3 | version = "0.1.0"
 4 | edition = "2021"
 5 | 
 6 | # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 7 | 
 8 | [dependencies]
 9 | audioviz = { version = "0.4.4", features = ["serde"] }
10 | # audioviz = { path = "../audioviz", features = ["serde"] }
11 | 
12 | cpal = "0.13.4"
13 | gag = "1.0.0"
14 | clap = "2.33.3"
15 | serde = { version = "1.0.130", features = ["derive"]}
16 | serde_json = "1.0.68"
17 | 
18 | # for interpolation in color gradients
19 | splines = "4.0.3"
20 | 
21 | # universal wgpu backend
22 | winit = "0.25"
23 | wgpu = "0.11"
24 | bytemuck = { version = "1.4", features = [ "derive" ] }
25 | pollster = "0.2"
26 | winit_input_helper = "0.10.0"
27 | 
28 | env_logger = "0.9"
29 | 
30 | # termion backend for unix targets
31 | [target.'cfg(target_family = "unix")'.dependencies]
32 | termion = "1.5.6"
33 | 
34 | # crossterm backend for windows targets
35 | [target.'cfg(target_family = "windows")'.dependencies]
36 | crossterm = "0.22.1"
37 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | MIT License
 2 | 
 3 | Copyright (c) 2021 BrunoWallner
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # crav
 2 | Console-based Rust Audio Visualizer
 3 | 
 4 | It can run in the terminal but also has a 3D accelerated backend implemented in wgpu.
 5 | 
 6 | ## demo
 7 | ![](/media/demo.gif)
 8 | 
 9 | ## compatibility
10 | The terminal backend is currently only working on unix systems, but the wgpu backend should work fine on Windows too.
11 | 
12 | ### tested Terminals
13 | | terminal emulator | state             |
14 | | ----------------- | ----------------- |
15 | | gnome-terminal    | working, but slow |
16 | | kitty             | perfectly working |
17 | | alacritty         | working, but weird font |
18 | | tty               | working, but limited color and bar height accuracy |
19 | | windows-terminals | not working, but WIP |
20 | 
21 | ## Keyboard shortcuts
22 | * `+` increases volume
23 | * `-` decreases volume
24 | * `m` toggles mirroring


--------------------------------------------------------------------------------
/default_config.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "audio": {
 3 |     "processor": {
 4 |       "sample_rate": 44100,
 5 |       "frequency_bounds": [
 6 |         50,
 7 |         20000
 8 |       ],
 9 |       "resolution": null,
10 |       "volume": 15.0,
11 |       "volume_normalisation": "Mixture",
12 |       "position_normalisation": "Harmonic",
13 |       "manual_position_distribution": null,
14 |       "interpolation": "Cubic"
15 |     },
16 |     "fft_resolution": 2048,
17 |     "refresh_rate": 90,
18 |     "gravity": 100
19 |   },
20 |   "mirror_x_achsis": false,
21 |   "fps": 60,
22 |   "color": {
23 |     "Rgb": [
24 |       200,
25 |       0,
26 |       0
27 |     ]
28 |   },
29 |   "width": 1,
30 |   "spacing": 0,
31 |   "mirror": true,
32 |   "visualisation": "Spectrum",
33 |   "wgpu": {
34 |     "transparent": false,
35 |     "fullscreen": false,
36 |     "decoration": true
37 |   }
38 | }
39 | 


--------------------------------------------------------------------------------
/media/demo.gif:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/BrunoWallner/crav/c1aac3f006063927d9fc5149365d04ca064b5399/media/demo.gif


--------------------------------------------------------------------------------
/src/backends/audio_to_grid.rs:
--------------------------------------------------------------------------------
  1 | use audioviz::audio_capture::capture::{Capture, CaptureReceiver};
  2 | use crate::config::Config;
  3 | use crate::backends::GridPixel;
  4 | use audioviz::spectrum::stream::{Stream, StreamController};
  5 | 
  6 | pub enum ConverterType {
  7 |     Stream(Stream),
  8 |     Capture(Capture),
  9 | }
 10 | 
 11 | pub struct Converter {
 12 |     conv_type: ConverterType,
 13 |     raw_buf: Vec<f32>,
 14 |     show_vec: Vec<f32>,
 15 |     pub raw_receiver: Option<CaptureReceiver>,
 16 |     pub stream_controller: Option<StreamController>,
 17 |     pub config: Config,
 18 |     pub resolution: usize,
 19 | }
 20 | impl Converter {
 21 |     pub fn from_capture(capture: Capture, config: Config) -> Self {
 22 |         let raw_receiver = capture.get_receiver().unwrap();
 23 |         Self {
 24 |             conv_type: ConverterType::Capture(capture),
 25 |             raw_buf: Vec::new(),
 26 |             show_vec: Vec::new(),
 27 |             raw_receiver: Some(raw_receiver),
 28 |             stream_controller: None,
 29 |             config,
 30 |             resolution: 0,
 31 |         }
 32 |     }
 33 | 
 34 |     pub fn from_stream(stream: Stream, config: Config) -> Self {
 35 |         let stream_controller = stream.get_controller();
 36 |         Self {
 37 |             conv_type: ConverterType::Stream(stream),
 38 |             raw_buf: Vec::new(),
 39 |             show_vec: Vec::new(),
 40 |             raw_receiver: None,
 41 |             stream_controller: Some(stream_controller),
 42 |             config,
 43 |             resolution: 0,
 44 |         }
 45 |     }
 46 | 
 47 |     fn get_data(&mut self) -> Option<Vec<f32>> {
 48 |         if let Some(raw) = &self.raw_receiver {
 49 |             let mut data: Vec<f32> = match raw.receive_data() {
 50 |                 Ok(d) => {
 51 |                     let mut b: Vec<f32> = Vec::new();
 52 | 
 53 |                     let bufs = d.chunks(1);
 54 |                     for buf in bufs {
 55 |                         let mut max: f32 = 0.0;
 56 |                         for value in buf {
 57 |                             let value = value * 30.0 * self.config.audio.processor.volume;
 58 |                             if value > max {
 59 |                                 max = value
 60 |                             }
 61 |                         }
 62 |                         b.push(max)
 63 |                     }
 64 |                     b
 65 |                 },
 66 |                 Err(_) => Vec::new()
 67 |             };
 68 |             self.raw_buf.append(&mut data);
 69 |             if self.raw_buf.len() >= self.resolution {
 70 |                 self.show_vec = self.raw_buf[0..self.resolution].to_vec();
 71 |                 self.raw_buf.drain(..);
 72 |             }
 73 |             return Some(self.show_vec.clone());
 74 |         }
 75 |         if let Some(stream) = &self.stream_controller {
 76 |             let freqs = stream.get_frequencies();
 77 |             let data: Vec<f32> = freqs
 78 |                 .into_iter()
 79 |                 .map(|x| x.volume)
 80 |                 .collect();
 81 |             return Some(data);
 82 |         }
 83 |         
 84 |         None
 85 |     }
 86 | 
 87 |     
 88 |     pub fn gen_grid(&mut self, x_size: u16, y_size: u16) -> Vec<Vec<GridPixel>> {
 89 |         let mut buffer: Vec<Vec<GridPixel>> = vec![vec![GridPixel::Bar(0); x_size as usize]; y_size as usize];
 90 | 
 91 |         let mut data = self.get_data().unwrap_or(Vec::new());
 92 | 
 93 |         if self.config.mirror {
 94 |             for i in 0..data.len() {
 95 |                 data.insert(0, data[i*2].clone());
 96 |             }
 97 |         }
 98 | 
 99 |         let mut screen_x: usize = 0;
100 |         //let mut x: usize = 0;
101 |         for x in 0..x_size as usize {
102 |             if data.len() > x {
103 |                 let height: usize = data[x].trunc() as usize;
104 | 
105 |                 // can range from 0 to 1, top of bar for 8 times more precision
106 |                 let precision_top: f32 = data[x] - height as f32;
107 |                 let precision_bar: u8 = (precision_top * 8.0) as u8 + 1;
108 |                 //let precision_bar: u8 = 8;
109 | 
110 |                 if self.config.mirror_x_achsis {
111 |                     for _ in 0..self.config.width {
112 |                         for y in 0..height {
113 |                             if buffer.len() > (y_size as usize / 2 + y + 1) && buffer.len() > (y_size as usize / 2 - y)
114 |                             && buffer[y].len() > screen_x {
115 |                                 // top mirror
116 |                                 buffer[y_size as usize / 2 + y + 1][screen_x] = GridPixel::Bar(8);
117 |         
118 |                                 // bottom mirror
119 |                                 buffer[y_size as usize/ 2 - y][screen_x] = GridPixel::Bar(8);
120 |                             }
121 |                         } 
122 | 
123 |                         // precision bars
124 |                         if buffer.len() > (y_size as usize / 2 + height + 1) && buffer.len() > (y_size as usize / 2 - height)
125 |                         && buffer[height].len() > screen_x {
126 |                             // top
127 |                             buffer[y_size as usize / 2 + height + 1][screen_x] = GridPixel::Bar(precision_bar);
128 | 
129 |                             // bottom
130 |                             buffer[y_size as usize / 2 - height][screen_x] = GridPixel::Bar(precision_bar + 8 );
131 |                         }
132 |                         screen_x += 1;
133 |                     }
134 |                 }
135 |                 else {
136 |                     for _ in 0..self.config.width {
137 |                         for y in 0..height {
138 |                             if buffer.len() > y && buffer[y].len() > screen_x {
139 |                                 buffer[y][screen_x] = GridPixel::Bar(8);
140 |                             }
141 |                         }
142 |         
143 |                         // precision top bar
144 |                         if buffer.len() > height && buffer[height].len() > screen_x {
145 |                             buffer[height][screen_x] = GridPixel::Bar(precision_bar);
146 |                         }
147 |                         screen_x += 1;
148 |                     }
149 |                 }
150 |                 screen_x += self.config.spacing as usize;
151 |             }
152 |         }
153 | 
154 |         buffer
155 |     }
156 | 
157 |     pub fn set_resolution(&mut self, resolution: usize) {
158 |         self.resolution = resolution;
159 |         if let Some(stream) = &self.stream_controller {
160 |             stream.set_resolution(resolution);
161 |         }
162 |     }
163 | }


--------------------------------------------------------------------------------
/src/backends/crossterm/mod.rs:
--------------------------------------------------------------------------------
1 | use crate::config::{Config, Color};
2 | use audioviz::spectrum::stream::StreamController;
3 | 
4 | pub fn run(mut _config: &mut Config, _audio_controller: StreamController) {
5 |     println!("The Windows terminal is currently not supported, as it does not support ANSI escape codes");
6 |     println!("please use the wgpu backend with the '--backend wgpu' parameter");
7 | }


--------------------------------------------------------------------------------
/src/backends/mod.rs:
--------------------------------------------------------------------------------
 1 | use crate::config::Config;
 2 | 
 3 | //use audioviz::spectrum::stream::StreamController;
 4 | use audioviz::spectrum::Frequency;
 5 | 
 6 | // IDK how to only use 1 #[cfg] per target_family but this should work at least fine
 7 | #[cfg(target_family = "unix")]
 8 | mod termion;
 9 | #[cfg(target_family = "unix")]
10 | use self::termion as terminal;
11 | 
12 | #[cfg(target_family = "windows")]
13 | mod crossterm;
14 | #[cfg(target_family = "windows")]
15 | use self::crossterm as terminal;
16 | 
17 | mod wgpu;
18 | pub mod audio_to_grid;
19 | 
20 | #[allow(dead_code)]
21 | #[derive(Clone, Copy, Debug)]
22 | pub enum GridPixel {
23 |     Bar(u8),
24 |     Char(char),
25 | }
26 | 
27 | pub enum Backend {
28 |     Terminal,
29 |     Wgpu,
30 | }
31 | impl Backend {
32 |     pub fn run(&self, config: &mut Config, converter: audio_to_grid::Converter) {
33 |         match self {
34 |             Backend::Terminal => {
35 |                 terminal::run(config, converter);
36 |             }
37 |             Backend::Wgpu => {
38 |                 wgpu::run(config, converter);
39 |             }
40 |         }
41 |     }
42 | }
43 | 
44 | pub fn get_bar_number(width: u8, spacing: u8, screen_width: u16) -> usize {
45 |     if width == 0 {return 1}
46 |     (screen_width / (width + spacing) as u16) as usize
47 | }
48 | 


--------------------------------------------------------------------------------
/src/backends/termion/bars.rs:
--------------------------------------------------------------------------------
 1 | use std::io::{StdoutLock, Write};
 2 | use std::error::Error;
 3 | use termion::color;
 4 | use crate::config::Color;
 5 | use std::io::BufWriter;
 6 | use crate::backends::GridPixel;
 7 | 
 8 | use audioviz::spectrum::Frequency;
 9 | 
10 | fn get_lines(width: u16, height: u16, grid: Vec<Vec<GridPixel>>, color: Color) -> Vec<String> {
11 |     let mut lines: Vec<String> = vec![String::new(); height as usize];
12 |     //let calculated_width: usize = get_bar_number(w, spacing, width) * 2;
13 | 
14 |     match color {
15 |         Color::Rgb(color) => {
16 |             lines[0].push_str( &format!("{}", color::Fg(color::Rgb(color[0], color[1], color[2]))) );
17 |             for y in 0..height as usize {
18 |                 for x in 0..width as usize {
19 |                     let str = u8_to_string(grid[y][x]);
20 | 
21 |                     lines[y].push_str(str.as_str());
22 |                 }
23 |             }
24 |         }
25 |         c => {
26 |             for y in 0..height as usize {
27 |                 let ry: f32 = y as f32 / height as f32;
28 |                 let color = c.to_rgb(ry);
29 |                 lines[y].push_str(&format!("{}", color::Fg(color::Rgb(color[0], color[1], color[2]))));
30 |                 for x in 0..width as usize {
31 |                     if grid[y].len() > x {
32 |                         let str = u8_to_string(grid[y][x]);
33 | 
34 |                         lines[y].push_str(str.as_str());
35 |                     }
36 |                 }
37 |             }        
38 |         }
39 |     }
40 |     lines
41 | }
42 | 
43 | fn u8_to_string(pixel: GridPixel) -> String {
44 |     let str = match pixel {
45 |         GridPixel::Bar(b) => {
46 |             let pixel= match b {
47 |                 // top
48 |                 0 => " ",
49 |                 8 => "█",
50 |                 7 => "▇",
51 |                 6 => "▆",
52 |                 5 => "▅",
53 |                 4 => "▄",
54 |                 3 => "▃",
55 |                 2 => "▂",
56 |                 1 => "▁", 
57 |                 // bottom, not the same precision as top
58 |                 16 => "█",
59 |                 15 => "█",
60 |                 14 => "▀",
61 |                 13 => "▀",
62 |                 12 => "▀",
63 |                 11 => "▔",
64 |                 10 => "▔",
65 |                 9 => "▔",
66 |                 _ => " ",   
67 |             };
68 |             pixel.to_string()
69 |         }
70 |         GridPixel::Char(f) => {
71 |             f.to_string()
72 |         }
73 |     };
74 | 
75 |     str.to_string()
76 | }
77 | 
78 | pub fn draw(
79 |     grid: Vec<Vec<GridPixel>>, 
80 |     screen: &mut BufWriter<StdoutLock>, 
81 |     size: [u16; 2], 
82 |     color: Color,
83 |     width: u8,
84 |     spacing: u8,
85 |     mirror_x_achsis: bool,
86 | ) -> Result<(), Box<dyn Error>> {
87 |     //let calculated_width: u16 = get_bar_number(width, spacing, size[0]) as u16;
88 | 
89 |     //let grid = gen_grid(size[0], size[1], &data, width, spacing, mirror_x_achsis);
90 |     let lines = get_lines(size[0], size[1], grid, color);
91 | 
92 |     for y in 0..size[1] as usize {
93 |         write!( screen, "{}", termion::cursor::Goto(0, size[1] - y as u16) )?;
94 |         let line: &str = &lines[y].clone()[..]; // prevents line overflow not implemented rn
95 |         write!( screen, "{}", line)?;
96 |     }
97 | 
98 |     Ok(())
99 | }


--------------------------------------------------------------------------------
/src/backends/termion/events.rs:
--------------------------------------------------------------------------------
 1 | use std::io;
 2 | use std::sync::mpsc;
 3 | use std::thread;
 4 | use std::time::Duration;
 5 | 
 6 | use termion::event::Key;
 7 | use termion::input::TermRead;
 8 | 
 9 | #[derive(Debug, Clone)]
10 | pub enum Event<I> {
11 |     Input(I),
12 |     Resize( (u16, u16) ),
13 |     Tick,
14 | }
15 | pub struct EventHandler {
16 |     rx: mpsc::Receiver<Event<Key>>,
17 |     pub tick_rate: Duration,
18 | }
19 | impl EventHandler {
20 |     pub fn new(tick_rate: Duration) -> Self {
21 |         let (tx, rx) = mpsc::channel();
22 | 
23 |         let tx_clone = tx.clone();
24 |         thread::spawn(move || {
25 |             let stdin = io::stdin();
26 |             for evt in stdin.keys() {
27 |                 match evt {
28 |                     Ok(key) => tx_clone.send(Event::Input(key)).unwrap(),
29 |                     Err(_) => (),
30 |                 }
31 |             }
32 |         });
33 | 
34 |         let tx_clone = tx.clone();
35 |         thread::spawn(move || {
36 |             let mut t_size_old = termion::terminal_size().unwrap();
37 |             loop {
38 |                 let t_size = termion::terminal_size().unwrap();
39 |                 if t_size_old != t_size {
40 |                     tx_clone.send(Event::Resize( (t_size.0, t_size.1) )).unwrap();
41 |                     t_size_old = t_size;
42 |                 }
43 |                 tx_clone.send(Event::Tick).unwrap();
44 |                 thread::sleep(tick_rate);
45 |             }
46 |         });
47 | 
48 |         EventHandler { rx, tick_rate }
49 |     }
50 | 
51 |     pub fn get(&self) -> Option<Event<Key>> {
52 |         match self.rx.recv() {
53 |             Ok(e) => Some(e),
54 |             Err(_) => None,
55 |         }
56 |     }
57 | }


--------------------------------------------------------------------------------
/src/backends/termion/mod.rs:
--------------------------------------------------------------------------------
 1 | mod bars;
 2 | mod events;
 3 | 
 4 | use crate::backends::get_bar_number;
 5 | use crate::config::Config;
 6 | 
 7 | use std::{io::BufWriter};
 8 | use std::time::Duration;
 9 | use termion::event::Key;
10 | 
11 | use termion::raw::IntoRawMode;
12 | use termion::screen::AlternateScreen;
13 | use std::io::{Write, stdout};
14 | 
15 | use audioviz::spectrum::stream::StreamController;
16 | 
17 | use crate::backends::audio_to_grid::Converter;
18 | 
19 | pub fn run(mut config: &mut Config, mut converter: Converter) {
20 |     let raw = stdout().into_raw_mode().unwrap();
21 |     let mut screen = AlternateScreen::from(raw);
22 |     write!(screen, "{}", termion::cursor::Hide).unwrap();
23 |     write!(screen, "{}", termion::clear::All).unwrap();
24 | 
25 |     let ev = events::EventHandler::new(Duration::from_millis(1000 / config.fps));
26 | 
27 | 
28 |     let (mut width, mut height) = termion::terminal_size().unwrap();
29 | 
30 |     let mut bar_number: usize = get_bar_number(config.width, config.spacing, width);
31 |     if config.mirror {bar_number /= 2}
32 |     converter.set_resolution(bar_number);
33 | 
34 |     'main: loop {
35 |         let mut screen = BufWriter::new(screen.lock());
36 | 
37 |         let grid = converter.gen_grid(width, height);
38 |         bars::draw(
39 |             grid, 
40 |             &mut screen, 
41 |             [width, height], 
42 |             config.color.clone(), 
43 |             config.width, 
44 |             config.spacing, 
45 |             config.mirror_x_achsis
46 |         ).unwrap();
47 | 
48 |         screen.flush().unwrap();
49 | 
50 |         match ev.get().unwrap() {
51 |             events::Event::Input(input) => match input {
52 |                 Key::Char('q') => break 'main,
53 |                 _ => (),
54 |             }
55 |             events::Event::Resize( (w, h)) => {
56 |                 width = w;
57 |                 height = h;
58 | 
59 |                 let mut bar_number: usize = get_bar_number(config.width, config.spacing, w);
60 |                 if config.mirror {bar_number /= 2}
61 |                 converter.set_resolution(bar_number);
62 |                 write!(screen, "{}", termion::clear::All).unwrap();
63 |             }
64 |             _ => (),
65 |         }
66 |     }
67 | }


--------------------------------------------------------------------------------
/src/backends/wgpu/mesh.rs:
--------------------------------------------------------------------------------
  1 | use crate::backends::wgpu::Vertex;
  2 | use crate::config::{Config, Color};
  3 | use crate::backends::GridPixel;
  4 | 
  5 | use crate::backends::wgpu::{PIXEL_WIDTH, PIXEL_HEIGHT};
  6 | 
  7 | use audioviz::spectrum::Frequency;
  8 | 
  9 | pub fn from_buffer(
 10 |     grid: Vec<Vec<GridPixel>>,
 11 |     config: &Config,
 12 |     window_size: (u32, u32),
 13 |     mirror_x_achsis: bool,
 14 | ) -> (Vec<Vertex>, Vec<u32>)  {
 15 |     let (w, h) = ( (window_size.0 / PIXEL_WIDTH as u32) as u16, (window_size.1 / PIXEL_HEIGHT as u32) as u16 );
 16 |     let width = 1.0 / w as f32 * 2.0; // * 2.0 because wgpu goes from -1 to 1
 17 | 
 18 |     //let w: u16 = get_bar_number(config.width, config.spacing, w) as u16; // calculates width further
 19 | 
 20 |     let mut vertices: Vec<Vertex> = Vec::new();
 21 |     let mut indices: Vec<u32> = Vec::new();
 22 | 
 23 |     if grid.is_empty() {
 24 |         return (Vec::new(), Vec::new());
 25 |     }
 26 | 
 27 |     /*
 28 |     let grid = gen_grid(
 29 |             w,
 30 |             h,
 31 |         &buffer, 
 32 |         config.width,
 33 |         config.spacing,
 34 |         mirror_x_achsis
 35 |     );
 36 |     */
 37 | 
 38 |     for y in 0..h as usize {
 39 |         let color_clone = config.color.clone();
 40 |         let color: [f32; 3] = match color_clone {
 41 |             Color::Rgb(c) => [ 
 42 |                     (c[0] as f32 / 255.0).powf(2.2),
 43 |                     (c[1] as f32 / 255.0).powf(2.2),
 44 |                     (c[2] as f32 / 255.0).powf(2.2),
 45 |                 ],
 46 |             c => {
 47 |                 let c = c.to_rgb(y as f32 / h as f32);
 48 |                 [ 
 49 |                     (c[0] as f32 / 255.0).powf(2.2),
 50 |                     (c[1] as f32 / 255.0).powf(2.2),
 51 |                     (c[2] as f32 / 255.0).powf(2.2),
 52 |                 ]
 53 |             }
 54 |         };
 55 | 
 56 |         for x in 0..w as usize {
 57 |             let precision_height: f32 = match grid[y][x] {
 58 |                 GridPixel::Bar(bar_height) => {
 59 |                     //bar_height as f32 * (1.0 / h as f32) / 8.0 * 2.0
 60 |                     let part = match bar_height {
 61 |                             // top
 62 |                             0 => 0,
 63 |                             8 => 8,
 64 |                             7 => 7,
 65 |                             6 => 6,
 66 |                             5 => 5,
 67 |                             4 => 4,
 68 |                             3 => 3,
 69 |                             2 => 2,
 70 |                             1 => 1, 
 71 |                             // bottom
 72 |                             16 => -8,
 73 |                             15 => -7,
 74 |                             14 => -6,
 75 |                             13 => -5,
 76 |                             12 => -4,
 77 |                             11 => -3,
 78 |                             10 => -2,
 79 |                             9 => -1,
 80 |                             _ => 0,   
 81 |                     };
 82 |                     part as f32 / h as f32 / 4.0
 83 |                 }
 84 |                 GridPixel::Char(_) => 0.0
 85 |             };
 86 | 
 87 |             //let x = ((x as f32 / w as f32) * (config.spacing + config.width) as f32)
 88 |             //    * 2.0 - 1.0; // because wgpu goes from -1 to 1
 89 | 
 90 |             let x = (x as f32 / w as f32) * 2.0 - 1.0;
 91 | 
 92 |             let y = y as f32 / h as f32 * 2.0 - 1.0;
 93 | 
 94 |             /*
 95 |             if precision_height < 0.0 {
 96 |                 vertices.push(Vertex { position: [x,  y + precision_height, 0.0],   color});
 97 |                 vertices.push(Vertex { position: [x + width,  y + precision_height, 0.0],   color});
 98 | 
 99 |                 vertices.push(Vertex { position: [x,  y + (2.0 / h as f32), 0.0],   color});
100 |                 vertices.push(Vertex { position: [x + width,  y+ (2.0 / h as f32), 0.0],   color});
101 |             } else {
102 |                 vertices.push(Vertex { position: [x,  y, 0.0],   color});
103 |                 vertices.push(Vertex { position: [x + width,  y, 0.0],   color});
104 |     
105 |                 vertices.push(Vertex { position: [x,  y + precision_height, 0.0],   color});
106 |                 vertices.push(Vertex { position: [x + width,  y + precision_height, 0.0],   color});
107 |             }
108 |             */
109 |             let (y1, y2) = if precision_height >= 0.0 {
110 |                 let h: f32 = 1.0 / h as f32 * 2.0;
111 |                 let y_start = y - h;
112 |                 (y_start, y_start + precision_height)
113 |             } else {
114 |                 (y + precision_height, y)
115 |             };
116 | 
117 |             vertices.push(Vertex { position: [x,  y1, 0.0],   color});
118 |             vertices.push(Vertex { position: [x + width,  y1, 0.0],   color});
119 | 
120 |             vertices.push(Vertex { position: [x,  y2, 0.0],   color});
121 |             vertices.push(Vertex { position: [x + width,  y2, 0.0],   color});
122 | 
123 |             let i = vertices.len() as u32 - 4;
124 |             indices.push(i+0);
125 |             indices.push(i+3);
126 |             indices.push(i+2);
127 |             indices.push(i+0);
128 |             indices.push(i+1);
129 |             indices.push(i+3);
130 |         }
131 |     }
132 |      
133 |     return (vertices, indices);
134 | }
135 | 


--------------------------------------------------------------------------------
/src/backends/wgpu/mod.rs:
--------------------------------------------------------------------------------
  1 | mod state;
  2 | mod mesh;
  3 | 
  4 | use state::Vertex;
  5 | use crate::backends::get_bar_number;
  6 | 
  7 | use crate::config::{Config};
  8 | 
  9 | use winit::{
 10 |     event::*,
 11 |     event_loop::{ControlFlow, EventLoop},
 12 |     window::WindowBuilder,
 13 |     window::Fullscreen,
 14 | };
 15 | //use winit_input_helper::WinitInputHelper;
 16 | 
 17 | //use audioviz::spectrum::stream::StreamController;
 18 | 
 19 | use crate::backends::audio_to_grid::Converter;
 20 | 
 21 | pub const PIXEL_WIDTH: u16 = 9;
 22 | pub const PIXEL_HEIGHT: u16 = 18;
 23 | 
 24 | pub fn run(config: &mut Config, converter: Converter) {
 25 |     let event_loop = EventLoop::new();
 26 |     let window = WindowBuilder::new()
 27 |         .with_transparent(config.wgpu.transparent)
 28 |         .with_decorations(config.wgpu.decoration)
 29 |         .with_title("crav")
 30 |         .build(&event_loop)
 31 |         .unwrap();
 32 | 
 33 |     if config.wgpu.fullscreen {
 34 |         window.set_fullscreen(Some(Fullscreen::Borderless(None)));
 35 |     }
 36 |     //let a_c = audio_controller.clone();
 37 | 
 38 |     let mut state = pollster::block_on(state::State::new(&window, converter, config.clone() ));
 39 | 
 40 |     // let mut input = WinitInputHelper::new();
 41 |     let config = config.clone();
 42 |     event_loop.run(move |event, _, control_flow| {
 43 |         /*
 44 |         if input.update(&event) {
 45 |             if input.key_pressed(VirtualKeyCode::Plus) || input.key_pressed(VirtualKeyCode::NumpadAdd) {
 46 |                 audio_controller.adjust_volume(1.1);
 47 |             }
 48 |             if input.key_pressed(VirtualKeyCode::Minus) || input.key_pressed(VirtualKeyCode::NumpadSubtract) {
 49 |                 audio_controller.adjust_volume(0.9);
 50 |             }
 51 |             if input.key_pressed(VirtualKeyCode::M) {
 52 |                 state.config.mirror = !state.config.mirror;
 53 | 
 54 |                 let screen_width = state.size.width as u16 / PIXEL_WIDTH;
 55 |                 let mut bar_number = get_bar_number(config.width, config.spacing, screen_width) as usize;
 56 |                 if state.config.mirror {bar_number /= 2}
 57 |                 audio_controller.set_resolution(bar_number);
 58 |             }
 59 |         }
 60 |         */
 61 | 
 62 | 
 63 |         match event {
 64 |             Event::WindowEvent {
 65 |                 ref event,
 66 |                 window_id,
 67 |             } if window_id == window.id() => if !state.input(event) { // UPDATED!
 68 |                 match event {
 69 |                     WindowEvent::CloseRequested
 70 |                     | WindowEvent::KeyboardInput {
 71 |                         input:
 72 |                             KeyboardInput {
 73 |                                 state: ElementState::Pressed,
 74 |                                 virtual_keycode: Some(VirtualKeyCode::Q),
 75 |                                 ..
 76 |                             },
 77 |                         ..
 78 |                     } => *control_flow = ControlFlow::Exit,
 79 |                     WindowEvent::Resized(physical_size) => {
 80 |                         state.resize(*physical_size);
 81 |                     }
 82 |                     WindowEvent::ScaleFactorChanged { new_inner_size, .. } => {
 83 |                         state.resize(**new_inner_size);
 84 |                     }
 85 |                     _ => {}
 86 |                 }
 87 |             }
 88 |             winit::event::Event::RedrawRequested(_) => {
 89 |                 state.update();
 90 |                 match state.render() {
 91 |                     Ok(_) => {}
 92 |                     // Reconfigure the surface if lost
 93 |                     Err(wgpu::SurfaceError::Lost) => state.resize(state.size),
 94 |                     // The system is out of memory, we should probably quit
 95 |                     Err(wgpu::SurfaceError::OutOfMemory) => *control_flow = ControlFlow::Exit,
 96 |                     // All other errors (Outdated, Timeout) should be resolved by the next frame
 97 |                     Err(e) => eprintln!("{:?}", e),
 98 |                 }
 99 |             }
100 |             winit::event::Event::MainEventsCleared => {
101 |                 // RedrawRequested will only trigger once, unless we manually
102 |                 // request it.
103 |                 window.request_redraw();
104 |             }
105 |             _ => {}
106 |         }
107 |     });
108 | }
109 | 


--------------------------------------------------------------------------------
/src/backends/wgpu/shader.wgsl:
--------------------------------------------------------------------------------
 1 | // Vertex shader
 2 | 
 3 | struct VertexInput {
 4 |     [[location(0)]] position: vec3<f32>;
 5 |     [[location(1)]] color: vec3<f32>;
 6 | };
 7 | 
 8 | struct VertexOutput {
 9 |     [[builtin(position)]] clip_position: vec4<f32>;
10 |     [[location(0)]] color: vec3<f32>;
11 | };
12 | 
13 | [[stage(vertex)]]
14 | fn main(
15 |     model: VertexInput,
16 | ) -> VertexOutput {
17 |     var out: VertexOutput;
18 |     out.color = model.color;
19 |     out.clip_position = vec4<f32>(model.position, 1.0);
20 |     return out;
21 | }
22 | 
23 | // Fragment shader
24 | 
25 | [[stage(fragment)]]
26 | fn main(in: VertexOutput) -> [[location(0)]] vec4<f32> {
27 |     return vec4<f32>(in.color, 1.0);
28 | }
29 | 


--------------------------------------------------------------------------------
/src/backends/wgpu/state.rs:
--------------------------------------------------------------------------------
  1 | use winit::window::Window;
  2 | use wgpu::util::DeviceExt;
  3 | 
  4 | use crate::config::Config;
  5 | 
  6 | use crate::backends::wgpu::{PIXEL_WIDTH, PIXEL_HEIGHT, mesh};
  7 | use crate::backends::{get_bar_number};
  8 | 
  9 | use audioviz::spectrum::stream::StreamController;
 10 | 
 11 | use crate::backends::audio_to_grid::Converter;
 12 | 
 13 | #[repr(C)]
 14 | #[derive(Copy, Clone, Debug, bytemuck::Pod, bytemuck::Zeroable)]
 15 | pub struct Vertex {
 16 |     pub position: [f32; 3],
 17 |     pub color: [f32; 3],
 18 | }
 19 | impl Vertex {
 20 |     fn desc<'a>() -> wgpu::VertexBufferLayout<'a> {
 21 |         wgpu::VertexBufferLayout {
 22 |             array_stride: std::mem::size_of::<Vertex>() as wgpu::BufferAddress,
 23 |             step_mode: wgpu::VertexStepMode::Vertex,
 24 |             attributes: &[
 25 |                 wgpu::VertexAttribute {
 26 |                     offset: 0,
 27 |                     shader_location: 0,
 28 |                     format: wgpu::VertexFormat::Float32x3,
 29 |                 },
 30 |                 wgpu::VertexAttribute {
 31 |                     offset: std::mem::size_of::<[f32; 3]>() as wgpu::BufferAddress,
 32 |                     shader_location: 1,
 33 |                     format: wgpu::VertexFormat::Float32x3,
 34 |                 }
 35 |             ]
 36 |         }
 37 |     }
 38 | }
 39 | 
 40 | pub struct State {
 41 |     surface: wgpu::Surface,
 42 |     device: wgpu::Device,
 43 |     queue: wgpu::Queue,
 44 |     surface_config: wgpu::SurfaceConfiguration,
 45 |     pub size: winit::dpi::PhysicalSize<u32>,
 46 |     render_pipeline: wgpu::RenderPipeline,
 47 |     vertex_buffer: wgpu::Buffer,
 48 |     num_indices: u32,
 49 |     index_buffer: wgpu::Buffer,
 50 |     pub converter: Converter,
 51 |     pub config: Config,
 52 | }
 53 | 
 54 | impl State {
 55 |     // Creating some of the wgpu types requires async code
 56 |     pub async fn new(window: &Window, mut converter: Converter, config: Config) -> Self {
 57 |         let size = window.inner_size();
 58 | 
 59 |         let screen_width = size.width as u16 / PIXEL_WIDTH;
 60 |         let mut bar_number = get_bar_number(config.width, config.spacing, screen_width) as usize;
 61 |         if config.mirror {bar_number /= 2}
 62 |         converter.set_resolution(bar_number);
 63 | 
 64 |         // The instance is a handle to our GPU
 65 |         // BackendBit::PRIMARY => Vulkan + Metal + DX12 + Browser WebGPU
 66 |         let instance = wgpu::Instance::new(wgpu::Backends::all());
 67 |         let surface = unsafe { instance.create_surface(window) };
 68 |         let adapter = instance.request_adapter(
 69 |             &wgpu::RequestAdapterOptions {
 70 |                 power_preference: wgpu::PowerPreference::default(),
 71 |                 compatible_surface: Some(&surface),
 72 |                 force_fallback_adapter: false,
 73 |             },
 74 |         ).await.unwrap();
 75 | 
 76 |         let (device, queue) = adapter.request_device(
 77 |             &wgpu::DeviceDescriptor {
 78 |                 features: wgpu::Features::empty(),
 79 |                 limits: wgpu::Limits::default(),
 80 |                 label: None,
 81 |             },
 82 |             None, // Trace path
 83 |         ).await.unwrap();
 84 | 
 85 |         let surface_config = wgpu::SurfaceConfiguration {
 86 |             usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
 87 |             format: surface.get_preferred_format(&adapter).unwrap(),
 88 |             width: size.width,
 89 |             height: size.height,
 90 |             present_mode: wgpu::PresentMode::Fifo,
 91 |         };
 92 |         surface.configure(&device, &surface_config);
 93 | 
 94 |         let shader = device.create_shader_module(&wgpu::ShaderModuleDescriptor {
 95 |             label: Some("Shader"),
 96 |             //flags: wgpu::ShaderFlags::all(), // very weird behavior, could be the fault of rust nightly but I am not sure
 97 |             source: wgpu::ShaderSource::Wgsl(include_str!("shader.wgsl").into()),
 98 |         });
 99 | 
100 |         let render_pipeline_layout =
101 |             device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
102 |                 label: Some("Render Pipeline Layout"),
103 |                 bind_group_layouts: &[],
104 |                 push_constant_ranges: &[],
105 |             });
106 | 
107 |         let render_pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
108 |             label: Some("Render Pipeline"),
109 |             layout: Some(&render_pipeline_layout),
110 |             vertex: wgpu::VertexState {
111 |                 module: &shader,
112 |                 entry_point: "main", // 1.
113 |                 buffers: &[
114 |                     Vertex::desc(),
115 |                 ],
116 |             },
117 |             fragment: Some(wgpu::FragmentState { // 3.
118 |                 module: &shader,
119 |                 entry_point: "main",
120 |                 targets: &[wgpu::ColorTargetState { // 4.
121 |                     format: surface_config.format,
122 |                     blend: Some(wgpu::BlendState::REPLACE),
123 |                     write_mask: wgpu::ColorWrites::ALL,
124 |                 }],
125 |             }),
126 |             primitive: wgpu::PrimitiveState {
127 |                 topology: wgpu::PrimitiveTopology::TriangleList, // 1.
128 |                 strip_index_format: None,
129 |                 front_face: wgpu::FrontFace::Ccw, // 2.
130 |                 cull_mode: Some(wgpu::Face::Back),
131 |                 // Setting this to anything other than Fill requires Features::NON_FILL_POLYGON_MODE
132 |                 polygon_mode: wgpu::PolygonMode::Fill,
133 |                 // Requires Features::DEPTH_CLAMPING
134 |                 clamp_depth: false,
135 |                 // Requires Features::CONSERVATIVE_RASTERIZATION
136 |                 conservative: false,
137 |             },
138 |             depth_stencil: None, // 1.
139 |             multisample: wgpu::MultisampleState {
140 |                 count: 1, // 2.
141 |                 mask: !0, // 3.
142 |                 alpha_to_coverage_enabled: false, // 4.
143 |             },
144 |         });
145 | 
146 |         let vertex_buffer = device.create_buffer_init(
147 |             &wgpu::util::BufferInitDescriptor {
148 |                 label: Some("Vertex Buffer"),
149 |                 //contents: bytemuck::cast_slice(&[]),
150 |                 contents: &[],
151 |                 usage: wgpu::BufferUsages::VERTEX,
152 |             }
153 |         );
154 | 
155 |         let index_buffer = device.create_buffer_init(
156 |             &wgpu::util::BufferInitDescriptor {
157 |                 label: Some("Index Buffer"),
158 |                 //contents: bytemuck::cast_slice(INDICES),
159 |                 contents: &[],
160 |                 usage: wgpu::BufferUsages::INDEX,
161 |             }
162 |         );
163 |         
164 | 
165 |         Self {
166 |             surface,
167 |             device,
168 |             queue,
169 |             surface_config,
170 |             size,
171 |             render_pipeline,
172 |             vertex_buffer,
173 |             num_indices: 0,
174 |             index_buffer,
175 |             converter,
176 |             config,
177 |         }
178 |     }
179 | 
180 |     pub fn resize(&mut self, new_size: winit::dpi::PhysicalSize<u32>) {
181 |         if new_size.width > 0 && new_size.height > 0 {
182 |             self.size = new_size;
183 |             self.surface_config.width = new_size.width;
184 |             self.surface_config.height = new_size.height;
185 |             self.surface.configure(&self.device, &self.surface_config);
186 | 
187 |             let screen_width = self.size.width as u16 / PIXEL_WIDTH;
188 |             let mut bar_number = get_bar_number(self.config.width, self.config.spacing, screen_width) as usize;
189 |             if self.config.mirror {bar_number /= 2}
190 |             self.converter.set_resolution(bar_number);
191 |         }
192 |     }
193 | 
194 |     pub fn input(&mut self, _event: &winit::event::WindowEvent) -> bool {
195 |         false
196 |     }
197 | 
198 |     pub fn update(&mut self) {
199 |         let (w, h) = ( (self.size.width / PIXEL_WIDTH as u32) as u16, (self.size.height / PIXEL_HEIGHT as u32) as u16 );
200 |         let (vertices, indices) = mesh::from_buffer(
201 |             self.converter.gen_grid(w, h),
202 |             &self.config,
203 |             (self.size.width, self.size.height),
204 |             self.config.mirror_x_achsis,
205 |         );
206 | 
207 |         self.num_indices = indices.len() as u32;
208 | 
209 |         let vertex_buffer = self.device.create_buffer_init(
210 |             &wgpu::util::BufferInitDescriptor {
211 |                 label: Some("Vertex Buffer"),
212 |                 contents: bytemuck::cast_slice(&vertices),
213 |                 usage: wgpu::BufferUsages::VERTEX,
214 |             }
215 |         );
216 |         let index_buffer = self.device.create_buffer_init(
217 |             &wgpu::util::BufferInitDescriptor {
218 |                 label: Some("Index Buffer"),
219 |                 contents: bytemuck::cast_slice(&indices),
220 |                 usage: wgpu::BufferUsages::INDEX,
221 |             }
222 |         );
223 | 
224 |         self.vertex_buffer = vertex_buffer;
225 |         self.index_buffer = index_buffer;
226 |     }
227 | 
228 |     pub fn render(&mut self) -> Result<(), wgpu::SurfaceError> {
229 |         let output = self.surface.get_current_texture()?;
230 |         let view = output.texture.create_view(&wgpu::TextureViewDescriptor::default());
231 |         let mut encoder = self.device.create_command_encoder(&wgpu::CommandEncoderDescriptor {
232 |             label: Some("Render Encoder"),
233 |         });
234 | 
235 |         {
236 |             // 1.
237 |             let mut render_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
238 |                 label: Some("Render Pass"),
239 |                 color_attachments: &[
240 |                     // This is what [[location(0)]] in the fragment shader targets
241 |                     wgpu::RenderPassColorAttachment {
242 |                         view: &view,
243 |                         resolve_target: None,
244 |                         ops: wgpu::Operations {
245 |                             load: wgpu::LoadOp::Clear(
246 |                                 if self.config.wgpu.transparent {    
247 |                                     wgpu::Color::TRANSPARENT
248 |                                 } else {
249 |                                     wgpu::Color::BLACK
250 |                                 }
251 |                             ),
252 |                             store: true,
253 |                         }
254 |                     }
255 |                 ],
256 |                 depth_stencil_attachment: None,
257 |             });
258 |         
259 |             // NEW!
260 |             render_pass.set_pipeline(&self.render_pipeline);
261 |             render_pass.set_vertex_buffer(0, self.vertex_buffer.slice(..));
262 |             render_pass.set_index_buffer(self.index_buffer.slice(..), wgpu::IndexFormat::Uint32); // 1.
263 |             render_pass.draw_indexed(0..self.num_indices, 0, 0..1); // 2.
264 |         }
265 | 
266 |         // submit will accept anything that implements IntoIter
267 |         self.queue.submit(std::iter::once(encoder.finish()));
268 |         output.present();
269 | 
270 |         Ok(())
271 |     }
272 | }


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/src/config.rs:
--------------------------------------------------------------------------------
  1 | use serde::{Deserialize, Serialize};
  2 | use splines::{Interpolation, Key, Spline}; // for interpolation in color gradients
  3 | 
  4 | #[derive(Serialize, Deserialize, Debug, Clone)]
  5 | pub enum Visualisation {
  6 |     Spectrum,
  7 |     Scope
  8 | }
  9 | 
 10 | #[derive(Serialize, Deserialize, Debug, Clone)]
 11 | pub struct Config {
 12 |     pub audio: audioviz::spectrum::config::StreamConfig,
 13 |     pub mirror_x_achsis: bool,
 14 |     pub fps: u64,
 15 |     pub color: Color,
 16 |     pub width: u8,
 17 |     pub spacing: u8,
 18 |     pub mirror: bool,
 19 |     pub visualisation: Visualisation,
 20 |     pub wgpu: WgpuConfig,
 21 | }
 22 | impl Default for Config {
 23 |     fn default() -> Self {
 24 |         Config {
 25 |             audio: audioviz::spectrum::config::StreamConfig {
 26 |                 gravity: Some(100.0),
 27 |                 ..Default::default()
 28 |             },
 29 |             mirror_x_achsis: true,
 30 |             fps: 60,
 31 |             color: Color::Gradient(vec![[155, 0, 255], [0, 30, 255], [0, 255, 60]]),
 32 |             width: 1,
 33 |             spacing: 0,
 34 |             mirror: true,
 35 |             visualisation: Visualisation::Spectrum,
 36 |             wgpu: WgpuConfig::default(),
 37 |         }
 38 |     }
 39 | }
 40 | 
 41 | #[derive(Serialize, Deserialize, Debug, Clone)]
 42 | pub enum Color {
 43 |     Gradient(Vec<[u8; 3]>),
 44 |     Rgb([u8; 3]),
 45 | }
 46 | impl Color {
 47 |     pub fn to_rgb(&self, relative_y: f32) -> [u8; 3] {
 48 |         match self {
 49 |             // It may be unclean to recreate the spline everytime, but I want to avoid to rewrite too much for
 50 |             // every backend, and the performance penalty is not too big. (0µs, 0% cpu usage difference)
 51 |             Color::Gradient(g) => {
 52 |                 let mut r_points: Vec<Key<f32, f32>> = Vec::new();
 53 |                 let mut g_points: Vec<Key<f32, f32>> = Vec::new();
 54 |                 let mut b_points: Vec<Key<f32, f32>> = Vec::new();
 55 | 
 56 |                 let step: f32 = 1.0_f32 / g.len() as f32;
 57 |                 for (i, color) in g.iter().enumerate() {
 58 |                     r_points.push(Key::new(
 59 |                         (i as f32 + (step * 1.5)) * step,
 60 |                         color[0] as f32,
 61 |                         Interpolation::Linear,
 62 |                     ));
 63 |                     g_points.push(Key::new(
 64 |                         (i as f32 + (step * 1.5)) * step,
 65 |                         color[1] as f32,
 66 |                         Interpolation::Linear,
 67 |                     ));
 68 |                     b_points.push(Key::new(
 69 |                         (i as f32 + (step * 1.5)) * step,
 70 |                         color[2] as f32,
 71 |                         Interpolation::Linear,
 72 |                     ));
 73 |                 }
 74 |                 let r_spline = Spline::from_vec(r_points);
 75 |                 let g_spline = Spline::from_vec(g_points);
 76 |                 let b_spline = Spline::from_vec(b_points);
 77 | 
 78 |                 [
 79 |                     r_spline.clamped_sample(relative_y).unwrap_or(0.0) as u8,
 80 |                     g_spline.clamped_sample(relative_y).unwrap_or(0.0) as u8,
 81 |                     b_spline.clamped_sample(relative_y).unwrap_or(0.0) as u8,
 82 |                 ]
 83 |             }
 84 |             Color::Rgb(c) => *c,
 85 |         }
 86 |     }
 87 | }
 88 | 
 89 | #[derive(Serialize, Deserialize, Debug, Clone)]
 90 | pub struct WgpuConfig {
 91 |     pub transparent: bool,
 92 |     pub fullscreen: bool,
 93 |     pub decoration: bool,
 94 | }
 95 | impl Default for WgpuConfig {
 96 |     fn default() -> Self {
 97 |         WgpuConfig {
 98 |             transparent: false,
 99 |             fullscreen: false,
100 |             decoration: true,
101 |         }
102 |     }
103 | }
104 | 


--------------------------------------------------------------------------------
/src/main.rs:
--------------------------------------------------------------------------------
  1 | use std::error::Error;
  2 | mod backends;
  3 | mod config;
  4 | 
  5 | use audioviz::audio_capture::{config::Config as CaptureConfig, capture::Capture};
  6 | use audioviz::spectrum::stream::{Stream, StreamController};
  7 | 
  8 | #[allow(unused_imports)]
  9 | use gag::Gag;
 10 | 
 11 | use clap::{Arg, App, AppSettings};
 12 | use std::fs;
 13 | 
 14 | use backends::audio_to_grid::Converter;
 15 | 
 16 | 
 17 | fn main() -> Result<(), Box<dyn Error>> {
 18 |     env_logger::init();
 19 |     
 20 |     let matches = App::new("audiovis")
 21 |     .version("0.1.0")
 22 |     .author("Luca Biendl <b.lucab1211@gmail.com>")
 23 |     .about("tool to visualize audio")
 24 |     .setting(AppSettings::ColorAlways)
 25 |     .setting(AppSettings::ColoredHelp)
 26 | 
 27 |                 
 28 |     .arg(Arg::with_name("backend")
 29 |                 .short("b")
 30 |                 .long("backend")
 31 |                 .takes_value(true)
 32 |                 .help("can be Termion or Wgpu"))
 33 | 
 34 |     .arg(Arg::with_name("config")
 35 |                 .short("c")
 36 |                 .long("config")
 37 |                 .takes_value(true)
 38 |                 .help("path of config"))
 39 | 
 40 |     .arg(Arg::with_name("print_config")
 41 |                 .short("p")
 42 |                 .long("print-config")
 43 |                 .takes_value(false)
 44 |                 .help("prints default config to './default_config.json'"))
 45 | 
 46 |     .get_matches();
 47 | 
 48 |     let backend: backends::Backend = match matches.value_of("backend") {
 49 |         Some(b) => match b.to_lowercase().as_str() {
 50 |             "terminal" | "t" | "term" => backends::Backend::Terminal,
 51 |             "wgpu" | "w" => backends::Backend::Wgpu,
 52 |             _ => panic!("invalid backend")
 53 |         }
 54 |         None => backends::Backend::Terminal,
 55 |     };
 56 | 
 57 |     if matches.is_present("print_config") {
 58 |         let config = config::Config::default();
 59 |         let c_str = serde_json::to_string_pretty(&config).unwrap();
 60 |         println!("{}", c_str);
 61 |         fs::write("./default_config.json", c_str.as_bytes()).unwrap();
 62 |         std::process::exit(0);
 63 |     }
 64 | 
 65 |     //let mut config = config::Config::default();
 66 | 
 67 |     let mut config: config::Config = match matches.value_of("config") {
 68 |         Some(p) => {
 69 |             let c_str = match fs::read(p) {
 70 |                 Ok(c) => c,
 71 |                 Err(e) => {
 72 |                     println!("{}", e);
 73 |                     std::process::exit(1);
 74 |                 }
 75 |             };
 76 |             match serde_json::from_slice(&c_str[..]) {
 77 |                 Ok(c) => c,
 78 |                 Err(e) => {
 79 |                     println!("invalid config: {}", e);
 80 |                     std::process::exit(1);
 81 |                 }
 82 |             }
 83 |         }
 84 |         None =>  {
 85 |             config::Config {
 86 |                 audio: audioviz::spectrum::config::StreamConfig {
 87 |                     processor: audioviz::spectrum::config::ProcessorConfig {
 88 |                         volume: 4.0,
 89 |                         ..Default::default()
 90 |                     },
 91 |                     gravity: Some(35.0),
 92 |                     ..Default::default()
 93 |                 },
 94 |                 ..Default::default()
 95 |             }
 96 |         }
 97 |     };
 98 | 
 99 |     /*
100 |     let audio_capture_config = CaptureConfig {
101 | 	latency: Some(1000),
102 |         ..Default::default()
103 |     };
104 |     let capture = Capture::init(audio_capture_config)
105 | 	.unwrap();
106 |     let audio = Stream::init_with_capture(&capture, config.audio.clone());
107 |     let audio_controller: StreamController = audio.get_controller();
108 |     */
109 |     let audio_capture_config = CaptureConfig::default();
110 |     let capture = Capture::init(audio_capture_config).unwrap();
111 |     let converter: Converter = match config.visualisation {
112 |         config::Visualisation::Spectrum => {
113 |             let stream = Stream::init_with_capture(&capture, config.audio.clone());
114 | 
115 |             Converter::from_stream(stream, config.clone())
116 |         },
117 |         config::Visualisation::Scope => {
118 |             Converter::from_capture(capture, config.clone())
119 |         }
120 |     };
121 | 
122 | 
123 |     backend.run(&mut config, converter);
124 |     Ok(())
125 | }
126 | 


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