├── .github
    └── workflows
    │   └── rust.yml
├── .gitignore
├── CHANGELOG.md
├── Cargo.lock
├── Cargo.toml
├── LICENSE
├── README.md
└── src
    ├── main.rs
    └── video.rs


/.github/workflows/rust.yml:
--------------------------------------------------------------------------------
 1 | name: Rust
 2 | 
 3 | on:
 4 |   push:
 5 |     paths-ignore:
 6 |       - "*.yml"
 7 |       - .gitignore
 8 |       - "*.md"
 9 |   pull_request:
10 |     paths-ignore:
11 |       - "*.yml"
12 |       - .gitignore
13 |       - "*.md"
14 | 
15 | env:
16 |   CARGO_INCREMENTAL: 0
17 |   RUSTFLAGS: "-Dwarnings"
18 |   CARGO_TERM_COLOR: always
19 | 
20 | jobs:
21 |   msrv:
22 |     runs-on: ubuntu-22.04
23 |     container: shssoichiro/av1an-ci:latest
24 |     steps:
25 |       - uses: actions/checkout@v4
26 |       - name: Install Rust 1.74.1
27 |         uses: dtolnay/rust-toolchain@1.74.1
28 |       - name: Build
29 |         run: cargo check --locked
30 | 
31 |   build:
32 |     runs-on: ubuntu-latest
33 |     container: shssoichiro/av1an-ci:latest
34 |     steps:
35 |       - uses: actions/checkout@v4
36 |       - name: Build
37 |         run: cargo clippy
38 |       - name: Run tests
39 |         run: cargo test
40 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # Generated by Cargo
 2 | # will have compiled files and executables
 3 | debug/
 4 | target/
 5 | 
 6 | # These are backup files generated by rustfmt
 7 | **/*.rs.bk
 8 | 
 9 | # MSVC Windows builds of rustc generate these, which store debugging information
10 | *.pdb
11 | 
12 | # Manually added
13 | /.devcontainer/
14 | /.vscode
15 | /.idea
16 | 


--------------------------------------------------------------------------------
/CHANGELOG.md:
--------------------------------------------------------------------------------
 1 | ## Version 0.5.2
 2 | 
 3 | - Re-remove harmonic mean. Unfortunately it cannot be used on sets that have negative numbers, which includes
 4 |   ssimulacra2 scores. Geometric mean was also tested, and in _theory_ it may be computed on sets with negative values,
 5 |   in practice it cannot be due to computer algorithms using logarithms for the computation.
 6 | 
 7 | ## Version 0.5.1
 8 | 
 9 | - Add harmonic mean output
10 | - Add ttf feature to `plotters` library
11 | - Bump all dependencies
12 | 
13 | ## Version 0.5.0
14 | 
15 | - Bump minimum MSRV to 1.74.1
16 | - Add rolling average to progress bar
17 | - Add increment parameter for skipping video frames
18 | - Bump all dependencies
19 | 
20 | ## Version 0.4.1
21 | 
22 | - Add support for piping y4m input from stdin as one of the sources
23 | 
24 | ## Version 0.4.0
25 | 
26 | - Update to [version 2.1 of the metric](https://github.com/cloudinary/ssimulacra2/compare/v2.0...v2.1)
27 | 
28 | ## Version 0.3.5
29 | 
30 | - Minor performance improvements
31 | 
32 | ## Version 0.3.4
33 | 
34 | - Add `--frame-threads` argument to support frame parallel multithreading
35 |     - This is set to 1 by default because it does linearly increase memory usage
36 | - Various performance improvements
37 | 
38 | ## Version 0.3.3
39 | 
40 | - Fix graphing
41 | 
42 | ## Version 0.3.2
43 | 
44 | - Use crossterm instead of termion for Windows compatibility
45 | 
46 | ## Version 0.3.1
47 | 
48 | - Add a progress bar
49 | - Bump dependencies for a pretty healthy speed increase of about 20%
50 | 
51 | ## Version 0.3.0
52 | 
53 | - Implement upstream changes from https://github.com/libjxl/libjxl/pull/1848
54 | 
55 | ## Version 0.2.2
56 | 
57 | - Fix decoding of AV1 files with overlays when using `ffmpeg_build` feature
58 |     - Or at least attempt to. There still seems to be some flakiness with linking libdav1d.
59 | - Add support for YUVJ files
60 | 
61 | ## Version 0.2.1
62 | 
63 | - Fix compilation with no default features
64 | 
65 | ## Version 0.2.0
66 | 
67 | - Add support for video comparison
68 | - This change splits ssimulacra2_rs into two subcommands:
69 |     - `ssimulacra2_rs image input.png output.png` for comparing still images. All popular input formats are supported.
70 |     - `ssimulacra2_rs video input.y4m output.y4m` for comparing videos. All popular input formats are supported. This
71 |       feature requires the `ffmpeg` feature be enabled, which is on by default.
72 | 


--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/Cargo.toml:
--------------------------------------------------------------------------------
 1 | [package]
 2 | name = "ssimulacra2_rs"
 3 | version = "0.5.2"
 4 | edition = "2021"
 5 | description = "Binary exposing the ssimulacra2 rust implementation"
 6 | repository = "https://github.com/rust-av/ssimulacra2_bin"
 7 | homepage = "https://github.com/rust-av/ssimulacra2_bin"
 8 | license = "BSD-2-Clause"
 9 | 
10 | # When changing MSRV: Also update .github/workflows/rust.yml
11 | rust-version = "1.74"
12 | 
13 | [dependencies]
14 | anyhow = "1.0.55"
15 | av-metrics-decoders = { version = "0.3.1", features = [
16 |     "vapoursynth",
17 |     "y4m",
18 | ], optional = true }
19 | clap = { version = "4.0.18", features = ["derive"] }
20 | crossterm = "0.27.0"
21 | indicatif = "0.17.1"
22 | num-traits = { version = "0.2.15", optional = true }
23 | ssimulacra2 = { version = "0.5.0", default-features = false }
24 | statrs = { version = "0.17.0", optional = true }
25 | 
26 | [dependencies.image]
27 | version = "0.25.6"
28 | default-features = false
29 | features = ["png", "jpeg", "webp", "hdr", "exr"]
30 | 
31 | [dependencies.plotters]
32 | version = "0.3.4"
33 | default-features = false
34 | features = ["bitmap_backend", "area_series", "ttf"]
35 | optional = true
36 | 
37 | [profile.release]
38 | lto = "thin"
39 | codegen-units = 1
40 | 
41 | [features]
42 | default = ["video", "avif"]
43 | video = ["av-metrics-decoders", "plotters", "statrs", "num-traits"]
44 | avif = ["image/avif-native"]
45 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | BSD 2-Clause License
 2 | 
 3 | Copyright (c) 2022-2022, the rav1e contributors
 4 | All rights reserved.
 5 | 
 6 | Redistribution and use in source and binary forms, with or without
 7 | modification, are permitted provided that the following conditions are met:
 8 | 
 9 | - Redistributions of source code must retain the above copyright notice, this
10 |   list of conditions and the following disclaimer.
11 | 
12 | - Redistributions in binary form must reproduce the above copyright notice,
13 |   this list of conditions and the following disclaimer in the documentation
14 |   and/or other materials provided with the distribution.
15 | 
16 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
20 | FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 | DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 | SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 | CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 | OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # ssimulacra2_rs
 2 | 
 3 | [![Crates.io](https://img.shields.io/crates/v/ssimulacra2_rs?style=for-the-badge)](https://crates.io/crates/ssimulacra2_rs)
 4 | [![LICENSE](https://img.shields.io/crates/l/ssimulacra2_rs?style=for-the-badge)](https://github.com/rust-av/ssimulacra2_bin/blob/main/LICENSE)
 5 | 
 6 | Binary interface to the Rust implementation of the SSIMULACRA2 metric: https://github.com/rust-av/ssimulacra2
 7 | 
 8 | ## Quality Guidelines
 9 | 
10 | The following is a rough estimate of how ssimulacra2 scores correspond to visual quality.
11 | 
12 | - 30 = low quality. This corresponds to the p10 worst output of mozjpeg -quality 30.
13 | - 50 = medium quality. This corresponds to the average output of cjxl -q 40 or mozjpeg -quality 40, or the p10 output of cjxl -q 50 or mozjpeg -quality 60.
14 | - 70 = high quality. This corresponds to the average output of cjxl -q 65 or mozjpeg -quality 70, p10 output of cjxl -q 75 or mozjpeg -quality 80.
15 | - 90 = very high quality. Likely impossible to distinguish from the original when viewed at 1:1 from a normal viewing distance. This corresponds to the average output of mozjpeg -quality 95 or the p10 output of cjxl -q 
16 | 
17 | ## Required packages for video support:
18 | 
19 | ### Arch
20 | 
21 | ```bash
22 | sudo pacman -S vapoursynth vapoursynth-plugin-lsmashsource gcc make cmake pkg-config ttf-bitstream-vera # Keep install dependencies
23 | ```
24 | 
25 | ### Other Linux
26 | 
27 | See http://www.vapoursynth.com/doc/installation.html#linux-installation
28 | 
29 | Install l-smash from https://github.com/l-smash/l-smash
30 | Install LSMASHSource VapourSynth plugin from https://github.com/AkarinVS/L-SMASH-Works
31 | 
32 | ### Windows
33 | 
34 | Do not install or download any pre-release.
35 | 1) Follow Vapoursynth's installation step http://www.vapoursynth.com/doc/installation.html#windows-installation (Not the portable installation)
36 |    - If you intend to install Vapoursynth system-wide instead of local, Python will also need to be system-wide. 
37 | 3) Get latest version of `VapourSynth-x64-R##.exe`
38 | 4) Run the .exe file to install VapourSynth, don't modify or change any setting if you are not familar with it
39 | 5) After Vapoursynth is installed, find its path
40 |    1. Local - `C:\Users\<username>\AppData\Local\Programs\VapourSynth\`
41 |    2. System-wide - `C:\VapourSynth\` or `C:\Program Files\VapourSynth`
42 | 7) Then download the latest release-x86_64-cachedir-cwd.zip from https://github.com/AkarinVS/L-SMASH-Works/releases/tag/latest
43 | 8) Decompress the release-x86_64-cachedir-cwd.zip, copy and paste the libvslsmashsource.dll to `C:\Path\to\VapourSynth\plugins\`
44 | 9) Install Rust from https://www.rust-lang.org/tools/install
45 | 10) Open Powershell and run `rustc --version` to check if it has been installed
46 | 11) Copy the full path `C:\Path\to\VapourSynth\sdk\lib64`
47 | 12) Enter the command on Powershell with the copied path: `$env:LIB="C:\Path\to\VapourSynth\sdk\lib64;$env:LIB"`
48 | 13) Then enter `cargo install ssimulacra2_rs`
49 | 14) If it fails because it requires Visual Studio or Visual Studio Tools, you can download either of them.
50 |     1. Download from https://visualstudio.microsoft.com/downloads/
51 |     2. Find the "Tools for Visual Studio" bar and download the "Remote Tools for Visual Studio 2022".
52 |     3. Make sure Desktop Development with C++ is checked, leave the optional check installation alone and download it.
53 |     4. Retry step 10 again after you reboot your PC.
54 | 15) Run `ssimulacra2_rs -h` to check if it's running.
55 | 16) You're done!
56 | 


--------------------------------------------------------------------------------
/src/main.rs:
--------------------------------------------------------------------------------
  1 | #[cfg(feature = "video")]
  2 | mod video;
  3 | 
  4 | #[cfg(feature = "video")]
  5 | use self::video::*;
  6 | use clap::{Parser, Subcommand};
  7 | #[cfg(feature = "video")]
  8 | use ssimulacra2::MatrixCoefficients;
  9 | use ssimulacra2::{compute_frame_ssimulacra2, ColorPrimaries, Rgb, TransferCharacteristic};
 10 | use std::path::{Path, PathBuf};
 11 | 
 12 | #[derive(Parser, Debug)]
 13 | #[command(author, version, about, long_about = None)]
 14 | #[command(propagate_version = true)]
 15 | struct Cli {
 16 |     #[command(subcommand)]
 17 |     pub command: Commands,
 18 | }
 19 | 
 20 | #[derive(Subcommand, Debug)]
 21 | #[allow(clippy::large_enum_variant)]
 22 | enum Commands {
 23 |     /// Compare two still images. Resolutions must be identical.
 24 |     Image {
 25 |         /// Source image
 26 |         #[arg(help = "Original unmodified image", value_hint = clap::ValueHint::FilePath)]
 27 |         source: PathBuf,
 28 | 
 29 |         /// Distorted image
 30 |         #[arg(help = "Distorted image", value_hint = clap::ValueHint::FilePath)]
 31 |         distorted: PathBuf,
 32 |     },
 33 |     /// Compare two videos. Resolutions and frame counts must be identical.
 34 |     #[cfg(feature = "video")]
 35 |     Video {
 36 |         /// Source video
 37 |         #[arg(help = "Original unmodified video", value_hint = clap::ValueHint::FilePath)]
 38 |         source: String,
 39 | 
 40 |         /// Distorted video
 41 |         #[arg(help = "Distorted video", value_hint = clap::ValueHint::FilePath)]
 42 |         distorted: String,
 43 | 
 44 |         /// How many worker threads to use for decoding & calculating scores.
 45 |         /// Note: Memory usage increases linearly with the number of workers.
 46 |         #[arg(long, short, verbatim_doc_comment)]
 47 |         frame_threads: Option<usize>,
 48 | 
 49 |         /// The amount of frames to skip.
 50 |         #[arg(long, default_value_t = 0)]
 51 |         skip_frames: usize,
 52 | 
 53 |         /// Limit the amount of frames to compare.
 54 |         #[arg(long)]
 55 |         frames: Option<usize>,
 56 | 
 57 |         /// How to increment current frame count; e.g. 10 will read every 10th frame.
 58 |         #[arg(long, short)]
 59 |         increment: Option<usize>,
 60 | 
 61 |         /// Whether to output a frame-by-frame graph of scores.
 62 |         #[arg(long, short)]
 63 |         graph: bool,
 64 | 
 65 |         /// Will output scores for every frame followed by the average at the end.
 66 |         #[arg(long, short)]
 67 |         verbose: bool,
 68 | 
 69 |         /// Source color matrix
 70 |         #[arg(long)]
 71 |         src_matrix: Option<String>,
 72 | 
 73 |         /// Source transfer characteristics
 74 |         #[arg(long)]
 75 |         src_transfer: Option<String>,
 76 | 
 77 |         /// Source color primaries
 78 |         #[arg(long)]
 79 |         src_primaries: Option<String>,
 80 | 
 81 |         /// The source is using full-range data
 82 |         #[arg(long)]
 83 |         src_full_range: bool,
 84 | 
 85 |         /// Distorted color matrix
 86 |         #[arg(long)]
 87 |         dst_matrix: Option<String>,
 88 | 
 89 |         /// Distorted transfer characteristics
 90 |         #[arg(long)]
 91 |         dst_transfer: Option<String>,
 92 | 
 93 |         /// Distorted color primaries
 94 |         #[arg(long)]
 95 |         dst_primaries: Option<String>,
 96 | 
 97 |         /// The distorted video is using full-range data
 98 |         #[arg(long)]
 99 |         dst_full_range: bool,
100 |     },
101 | }
102 | 
103 | fn main() {
104 |     match Cli::parse().command {
105 |         Commands::Image { source, distorted } => compare_images(&source, &distorted),
106 |         #[cfg(feature = "video")]
107 |         Commands::Video {
108 |             source,
109 |             distorted,
110 |             frame_threads,
111 |             skip_frames,
112 |             frames,
113 |             increment,
114 |             graph,
115 |             verbose,
116 |             src_matrix,
117 |             src_transfer,
118 |             src_primaries,
119 |             src_full_range,
120 |             dst_matrix,
121 |             dst_transfer,
122 |             dst_primaries,
123 |             dst_full_range,
124 |         } => {
125 |             let frame_threads = frame_threads.unwrap_or(1).max(1);
126 |             let inc = increment.unwrap_or(1).max(1);
127 |             let src_matrix = src_matrix
128 |                 .map(|i| parse_matrix(&i))
129 |                 .unwrap_or(MatrixCoefficients::Unspecified);
130 |             let src_transfer = src_transfer
131 |                 .map(|i| parse_transfer(&i))
132 |                 .unwrap_or(TransferCharacteristic::Unspecified);
133 |             let src_primaries = src_primaries
134 |                 .map(|i| parse_primaries(&i))
135 |                 .unwrap_or(ColorPrimaries::Unspecified);
136 |             let dst_matrix = dst_matrix
137 |                 .map(|i| parse_matrix(&i))
138 |                 .unwrap_or(MatrixCoefficients::Unspecified);
139 |             let dst_transfer = dst_transfer
140 |                 .map(|i| parse_transfer(&i))
141 |                 .unwrap_or(TransferCharacteristic::Unspecified);
142 |             let dst_primaries = dst_primaries
143 |                 .map(|i| parse_primaries(&i))
144 |                 .unwrap_or(ColorPrimaries::Unspecified);
145 |             compare_videos(
146 |                 &source,
147 |                 &distorted,
148 |                 frame_threads,
149 |                 skip_frames,
150 |                 frames,
151 |                 inc,
152 |                 graph,
153 |                 verbose,
154 |                 src_matrix,
155 |                 src_transfer,
156 |                 src_primaries,
157 |                 src_full_range,
158 |                 dst_matrix,
159 |                 dst_transfer,
160 |                 dst_primaries,
161 |                 dst_full_range,
162 |             )
163 |         }
164 |     }
165 | }
166 | 
167 | fn compare_images(source: &Path, distorted: &Path) {
168 |     // For now just assumes the input is sRGB. Trying to keep this as simple as possible for now.
169 |     let source = image::open(source).expect("Failed to open source file");
170 |     let distorted = image::open(distorted).expect("Failed to open distorted file");
171 | 
172 |     let source_data = source
173 |         .to_rgb32f()
174 |         .chunks_exact(3)
175 |         .map(|chunk| [chunk[0], chunk[1], chunk[2]])
176 |         .collect::<Vec<_>>();
177 | 
178 |     let source_data = Rgb::new(
179 |         source_data,
180 |         source.width() as usize,
181 |         source.height() as usize,
182 |         TransferCharacteristic::SRGB,
183 |         ColorPrimaries::BT709,
184 |     )
185 |     .expect("Failed to process source_data into RGB");
186 | 
187 |     let distorted_data = distorted
188 |         .to_rgb32f()
189 |         .chunks_exact(3)
190 |         .map(|chunk| [chunk[0], chunk[1], chunk[2]])
191 |         .collect::<Vec<_>>();
192 | 
193 |     let distorted_data = Rgb::new(
194 |         distorted_data,
195 |         distorted.width() as usize,
196 |         distorted.height() as usize,
197 |         TransferCharacteristic::SRGB,
198 |         ColorPrimaries::BT709,
199 |     )
200 |     .expect("Failed to process distorted_data into RGB");
201 | 
202 |     let result = compute_frame_ssimulacra2(source_data, distorted_data)
203 |         .expect("Failed to calculate ssimulacra2");
204 | 
205 |     println!("Score: {result:.8}");
206 | }
207 | 


--------------------------------------------------------------------------------
/src/video.rs:
--------------------------------------------------------------------------------
  1 | use std::collections::BTreeMap;
  2 | use std::io::stderr;
  3 | use std::sync::{mpsc, Arc, Mutex};
  4 | use std::time::Duration;
  5 | use std::{
  6 |     path::{Path, PathBuf},
  7 |     time::{SystemTime, UNIX_EPOCH},
  8 | };
  9 | 
 10 | use av_metrics_decoders::{y4m::new_decoder_from_stdin, Decoder, VapoursynthDecoder};
 11 | use crossterm::tty::IsTty;
 12 | use image::ColorType;
 13 | use indicatif::{HumanDuration, ProgressBar, ProgressDrawTarget, ProgressState, ProgressStyle};
 14 | use num_traits::FromPrimitive;
 15 | use ssimulacra2::{
 16 |     compute_frame_ssimulacra2, ColorPrimaries, MatrixCoefficients, Pixel, TransferCharacteristic,
 17 |     Yuv, YuvConfig,
 18 | };
 19 | use statrs::statistics::{Data, Distribution, Median, OrderStatistics};
 20 | 
 21 | const PROGRESS_CHARS: &str = "█▉▊▋▌▍▎▏  ";
 22 | const INDICATIF_PROGRESS_TEMPLATE: &str = if cfg!(windows) {
 23 |     // Do not use a spinner on Windows since the default console cannot display
 24 |     // the characters used for the spinner
 25 |     "{elapsed_precise:.bold} ▕{wide_bar:.blue/white.dim}▏ {percent:.bold}  {pos} ({fps:.bold}, eta {fixed_eta}{msg})"
 26 | } else {
 27 |     "{spinner:.green.bold} {elapsed_precise:.bold} ▕{wide_bar:.blue/white.dim}▏ {percent:.bold}  {pos} ({fps:.bold}, eta {fixed_eta}{msg})"
 28 | };
 29 | 
 30 | const INDICATIF_SPINNER_TEMPLATE: &str = if cfg!(windows) {
 31 |     // Do not use a spinner on Windows since the default console cannot display
 32 |     // the characters used for the spinner
 33 |     "{elapsed_precise:.bold} {pos} ({fps:.bold}{msg})"
 34 | } else {
 35 |     "{spinner:.green.bold} {elapsed_precise:.bold} {pos} ({fps:.bold}{msg})"
 36 | };
 37 | 
 38 | fn pretty_progress_style() -> ProgressStyle {
 39 |     ProgressStyle::default_bar()
 40 |         .template(INDICATIF_PROGRESS_TEMPLATE)
 41 |         .unwrap()
 42 |         .with_key(
 43 |             "fps",
 44 |             |state: &ProgressState, w: &mut dyn std::fmt::Write| {
 45 |                 if state.pos() == 0 || state.elapsed().as_secs_f32() < f32::EPSILON {
 46 |                     write!(w, "0 fps").unwrap();
 47 |                 } else {
 48 |                     let fps = state.pos() as f32 / state.elapsed().as_secs_f32();
 49 |                     if fps < 1.0 {
 50 |                         write!(w, "{:.2} s/fr", 1.0 / fps).unwrap();
 51 |                     } else {
 52 |                         write!(w, "{:.2} fps", fps).unwrap();
 53 |                     }
 54 |                 }
 55 |             },
 56 |         )
 57 |         .with_key(
 58 |             "fixed_eta",
 59 |             |state: &ProgressState, w: &mut dyn std::fmt::Write| {
 60 |                 if state.pos() == 0 || state.elapsed().as_secs_f32() < f32::EPSILON {
 61 |                     write!(w, "unknown").unwrap();
 62 |                 } else {
 63 |                     let spf = state.elapsed().as_secs_f32() / state.pos() as f32;
 64 |                     let remaining = state.len().unwrap_or(0) - state.pos();
 65 |                     write!(
 66 |                         w,
 67 |                         "{:#}",
 68 |                         HumanDuration(Duration::from_secs_f32(spf * remaining as f32))
 69 |                     )
 70 |                     .unwrap();
 71 |                 }
 72 |             },
 73 |         )
 74 |         .with_key(
 75 |             "pos",
 76 |             |state: &ProgressState, w: &mut dyn std::fmt::Write| {
 77 |                 write!(w, "{}/{}", state.pos(), state.len().unwrap_or(0)).unwrap();
 78 |             },
 79 |         )
 80 |         .with_key(
 81 |             "percent",
 82 |             |state: &ProgressState, w: &mut dyn std::fmt::Write| {
 83 |                 write!(w, "{:>3.0}%", state.fraction() * 100_f32).unwrap();
 84 |             },
 85 |         )
 86 |         .progress_chars(PROGRESS_CHARS)
 87 | }
 88 | 
 89 | fn pretty_spinner_style() -> ProgressStyle {
 90 |     ProgressStyle::default_bar()
 91 |         .template(INDICATIF_SPINNER_TEMPLATE)
 92 |         .unwrap()
 93 |         .with_key(
 94 |             "fps",
 95 |             |state: &ProgressState, w: &mut dyn std::fmt::Write| {
 96 |                 if state.pos() == 0 || state.elapsed().as_secs_f32() < f32::EPSILON {
 97 |                     write!(w, "0 fps").unwrap();
 98 |                 } else {
 99 |                     let fps = state.pos() as f32 / state.elapsed().as_secs_f32();
100 |                     if fps < 1.0 {
101 |                         write!(w, "{:.2} s/fr", 1.0 / fps).unwrap();
102 |                     } else {
103 |                         write!(w, "{:.2} fps", fps).unwrap();
104 |                     }
105 |                 }
106 |             },
107 |         )
108 |         .with_key(
109 |             "pos",
110 |             |state: &ProgressState, w: &mut dyn std::fmt::Write| {
111 |                 write!(w, "{}", state.pos()).unwrap();
112 |             },
113 |         )
114 |         .progress_chars(PROGRESS_CHARS)
115 | }
116 | 
117 | type VideoCompareMutex<E, F> = Arc<Mutex<VideoCompare<E, F>>>;
118 | 
119 | struct VideoCompare<E: Decoder, F: Decoder> {
120 |     current_frame: usize,
121 |     next_frame: usize,
122 |     source: E,
123 |     distorted: F,
124 | }
125 | 
126 | fn calc_score<S: Pixel, D: Pixel, E: Decoder, F: Decoder>(
127 |     mtx: &VideoCompareMutex<E, F>,
128 |     src_yuvcfg: &YuvConfig,
129 |     dst_yuvcfg: &YuvConfig,
130 |     inc: usize,
131 |     end_frame: Option<usize>,
132 |     verbose: bool,
133 | ) -> Option<(usize, f64)> {
134 |     let (frame_idx, (src_frame, dst_frame)) = {
135 |         let mut guard = mtx.lock().unwrap();
136 | 
137 |         let distance_to_next = guard.next_frame - guard.current_frame;
138 | 
139 |         if let Some(end_frame) = end_frame {
140 |             if guard.next_frame >= end_frame {
141 |                 return None;
142 |             }
143 |         }
144 | 
145 |         for ii in 1..distance_to_next {
146 |             let _src_frame = guard.source.read_video_frame::<S>();
147 |             let _dst_frame = guard.distorted.read_video_frame::<D>();
148 |             if _src_frame.is_none() || _dst_frame.is_none() {
149 |                 break;
150 |             }
151 |             if verbose {
152 |                 println!("Frame {}: skip", guard.current_frame + ii);
153 |             }
154 |         }
155 | 
156 |         let src_frame = guard.source.read_video_frame::<S>();
157 |         let dst_frame = guard.distorted.read_video_frame::<D>();
158 | 
159 |         let curr_frame = guard.next_frame;
160 |         guard.current_frame = guard.next_frame;
161 |         guard.next_frame += inc;
162 | 
163 |         if let (Some(sf), Some(df)) = (src_frame, dst_frame) {
164 |             (curr_frame, (sf, df))
165 |         } else {
166 |             return None;
167 |         }
168 |     };
169 | 
170 |     let src_yuv = Yuv::new(src_frame, *src_yuvcfg).unwrap();
171 |     let dst_yuv = Yuv::new(dst_frame, *dst_yuvcfg).unwrap();
172 | 
173 |     Some((
174 |         frame_idx,
175 |         compute_frame_ssimulacra2(src_yuv, dst_yuv).expect("Failed to calculate ssimulacra2"),
176 |     ))
177 | }
178 | 
179 | #[allow(clippy::too_many_arguments)]
180 | pub fn compare_videos(
181 |     source: &str,
182 |     distorted: &str,
183 |     frame_threads: usize,
184 |     skip_frames: usize,
185 |     frames_to_compare: Option<usize>,
186 |     inc: usize,
187 |     graph: bool,
188 |     verbose: bool,
189 |     src_matrix: MatrixCoefficients,
190 |     src_transfer: TransferCharacteristic,
191 |     src_primaries: ColorPrimaries,
192 |     src_full_range: bool,
193 |     dst_matrix: MatrixCoefficients,
194 |     dst_transfer: TransferCharacteristic,
195 |     dst_primaries: ColorPrimaries,
196 |     dst_full_range: bool,
197 | ) {
198 |     if source == "-" || source == "/dev/stdin" {
199 |         assert!(
200 |             !(distorted == "-" || distorted == "/dev/stdin"),
201 |             "Source and distorted inputs cannot both be from piped input"
202 |         );
203 |         let distorted = if Path::new(distorted)
204 |             .extension()
205 |             .map(|ext| ext.to_ascii_lowercase().to_string_lossy() == "vpy")
206 |             .unwrap_or(false)
207 |         {
208 |             VapoursynthDecoder::new_from_script(Path::new(distorted)).unwrap()
209 |         } else {
210 |             VapoursynthDecoder::new_from_video(Path::new(distorted)).unwrap()
211 |         };
212 |         let distorted_frame_count = distorted.get_frame_count().ok();
213 |         return compare_videos_inner(
214 |             new_decoder_from_stdin().unwrap(),
215 |             distorted,
216 |             None,
217 |             distorted_frame_count,
218 |             frame_threads,
219 |             skip_frames,
220 |             frames_to_compare,
221 |             inc,
222 |             graph,
223 |             verbose,
224 |             src_matrix,
225 |             src_transfer,
226 |             src_primaries,
227 |             src_full_range,
228 |             dst_matrix,
229 |             dst_transfer,
230 |             dst_primaries,
231 |             dst_full_range,
232 |         );
233 |     }
234 | 
235 |     if distorted == "-" || distorted == "/dev/stdin" {
236 |         let source = if Path::new(source)
237 |             .extension()
238 |             .map(|ext| ext.to_ascii_lowercase().to_string_lossy() == "vpy")
239 |             .unwrap_or(false)
240 |         {
241 |             VapoursynthDecoder::new_from_script(Path::new(source)).unwrap()
242 |         } else {
243 |             VapoursynthDecoder::new_from_video(Path::new(source)).unwrap()
244 |         };
245 |         let source_frame_count = source.get_frame_count().ok();
246 |         return compare_videos_inner(
247 |             source,
248 |             new_decoder_from_stdin().unwrap(),
249 |             source_frame_count,
250 |             None,
251 |             frame_threads,
252 |             skip_frames,
253 |             frames_to_compare,
254 |             inc,
255 |             graph,
256 |             verbose,
257 |             src_matrix,
258 |             src_transfer,
259 |             src_primaries,
260 |             src_full_range,
261 |             dst_matrix,
262 |             dst_transfer,
263 |             dst_primaries,
264 |             dst_full_range,
265 |         );
266 |     }
267 | 
268 |     let source = if Path::new(source)
269 |         .extension()
270 |         .map(|ext| ext.to_ascii_lowercase().to_string_lossy() == "vpy")
271 |         .unwrap_or(false)
272 |     {
273 |         VapoursynthDecoder::new_from_script(Path::new(source)).unwrap()
274 |     } else {
275 |         VapoursynthDecoder::new_from_video(Path::new(source)).unwrap()
276 |     };
277 |     let distorted = if Path::new(distorted)
278 |         .extension()
279 |         .map(|ext| ext.to_ascii_lowercase().to_string_lossy() == "vpy")
280 |         .unwrap_or(false)
281 |     {
282 |         VapoursynthDecoder::new_from_script(Path::new(distorted)).unwrap()
283 |     } else {
284 |         VapoursynthDecoder::new_from_video(Path::new(distorted)).unwrap()
285 |     };
286 |     let source_frame_count = source.get_frame_count().ok();
287 |     let distorted_frame_count = distorted.get_frame_count().ok();
288 |     compare_videos_inner(
289 |         source,
290 |         distorted,
291 |         source_frame_count,
292 |         distorted_frame_count,
293 |         frame_threads,
294 |         skip_frames,
295 |         frames_to_compare,
296 |         inc,
297 |         graph,
298 |         verbose,
299 |         src_matrix,
300 |         src_transfer,
301 |         src_primaries,
302 |         src_full_range,
303 |         dst_matrix,
304 |         dst_transfer,
305 |         dst_primaries,
306 |         dst_full_range,
307 |     )
308 | }
309 | 
310 | #[allow(clippy::too_many_arguments)]
311 | fn compare_videos_inner<D: Decoder + 'static, E: Decoder + 'static>(
312 |     source: D,
313 |     distorted: E,
314 |     source_frame_count: Option<usize>,
315 |     distorted_frame_count: Option<usize>,
316 |     frame_threads: usize,
317 |     skip_frames: usize,
318 |     frames_to_compare: Option<usize>,
319 |     inc: usize,
320 |     graph: bool,
321 |     verbose: bool,
322 |     mut src_matrix: MatrixCoefficients,
323 |     mut src_transfer: TransferCharacteristic,
324 |     mut src_primaries: ColorPrimaries,
325 |     src_full_range: bool,
326 |     mut dst_matrix: MatrixCoefficients,
327 |     mut dst_transfer: TransferCharacteristic,
328 |     mut dst_primaries: ColorPrimaries,
329 |     dst_full_range: bool,
330 | ) {
331 |     if let Some(source_frame_count) = source_frame_count {
332 |         if let Some(distorted_frame_count) = distorted_frame_count {
333 |             if source_frame_count != distorted_frame_count {
334 |                 eprintln!("WARNING: Frame count mismatch detected, scores may be inaccurate");
335 |             }
336 |         }
337 |     }
338 | 
339 |     let source_info = source.get_video_details();
340 |     let distorted_info = distorted.get_video_details();
341 |     if src_matrix == MatrixCoefficients::Unspecified {
342 |         src_matrix = guess_matrix_coefficients(source_info.width, source_info.height);
343 |     }
344 |     if dst_matrix == MatrixCoefficients::Unspecified {
345 |         dst_matrix = guess_matrix_coefficients(distorted_info.width, distorted_info.height);
346 |     }
347 |     if src_transfer == TransferCharacteristic::Unspecified {
348 |         src_transfer = TransferCharacteristic::BT1886;
349 |     }
350 |     if dst_transfer == TransferCharacteristic::Unspecified {
351 |         dst_transfer = TransferCharacteristic::BT1886;
352 |     }
353 |     if src_primaries == ColorPrimaries::Unspecified {
354 |         src_primaries = guess_color_primaries(src_matrix, source_info.width, source_info.height);
355 |     }
356 |     if dst_primaries == ColorPrimaries::Unspecified {
357 |         dst_primaries =
358 |             guess_color_primaries(dst_matrix, distorted_info.width, distorted_info.height);
359 |     }
360 | 
361 |     let src_ss = source_info
362 |         .chroma_sampling
363 |         .get_decimation()
364 |         .unwrap_or((0, 0));
365 |     let dist_ss = distorted_info
366 |         .chroma_sampling
367 |         .get_decimation()
368 |         .unwrap_or((0, 0));
369 |     let src_config = YuvConfig {
370 |         bit_depth: source_info.bit_depth as u8,
371 |         subsampling_x: src_ss.0 as u8,
372 |         subsampling_y: src_ss.1 as u8,
373 |         full_range: src_full_range,
374 |         matrix_coefficients: src_matrix,
375 |         transfer_characteristics: src_transfer,
376 |         color_primaries: src_primaries,
377 |     };
378 |     let dst_config = YuvConfig {
379 |         bit_depth: distorted_info.bit_depth as u8,
380 |         subsampling_x: dist_ss.0 as u8,
381 |         subsampling_y: dist_ss.1 as u8,
382 |         full_range: dst_full_range,
383 |         matrix_coefficients: dst_matrix,
384 |         transfer_characteristics: dst_transfer,
385 |         color_primaries: dst_primaries,
386 |     };
387 | 
388 |     let (result_tx, result_rx) = mpsc::channel();
389 |     let src_bd = src_config.bit_depth;
390 |     let dst_bd = dst_config.bit_depth;
391 | 
392 |     let current_frame = 0usize;
393 |     let end_frame = frames_to_compare
394 |         .map(|frames_to_compare| skip_frames + (frames_to_compare * inc));
395 | 
396 |     let video_compare = Arc::new(
397 |         Mutex::new(
398 |             VideoCompare {
399 |                 current_frame,
400 |                 next_frame: skip_frames,
401 |                 source,
402 |                 distorted,
403 |             }
404 |         )
405 |     );
406 | 
407 |     for _ in 0..frame_threads {
408 |         let video_compare = Arc::clone(&video_compare);
409 |         let result_tx = result_tx.clone();
410 | 
411 |         std::thread::spawn(move || {
412 |             loop {
413 |                 let score = match (src_bd, dst_bd) {
414 |                     (8, 8) => calc_score::<u8, u8, _, _>(
415 |                         &video_compare,
416 |                         &src_config,
417 |                         &dst_config,
418 |                         inc,
419 |                         end_frame,
420 |                         verbose,
421 |                     ),
422 |                     (8, _) => calc_score::<u8, u16, _, _>(
423 |                         &video_compare,
424 |                         &src_config,
425 |                         &dst_config,
426 |                         inc,
427 |                         end_frame,
428 |                         verbose,
429 |                     ),
430 |                     (_, 8) => calc_score::<u16, u8, _, _>(
431 |                         &video_compare,
432 |                         &src_config,
433 |                         &dst_config,
434 |                         inc,
435 |                         end_frame,
436 |                         verbose,
437 |                     ),
438 |                     (_, _) => calc_score::<u16, u16, _, _>(
439 |                         &video_compare,
440 |                         &src_config,
441 |                         &dst_config,
442 |                         inc,
443 |                         end_frame,
444 |                         verbose,
445 |                     ),
446 |                 };
447 | 
448 |                 if let Some(result) = score {
449 |                     result_tx.send(result).unwrap();
450 |                 } else {
451 |                     // no score = no more frames to read
452 |                     break;
453 |                 }
454 |             }
455 |         });
456 |     }
457 | 
458 |     // Needs to be dropped or the main thread never stops waiting for scores
459 |     drop(result_tx);
460 | 
461 |     let progress = if stderr().is_tty() && !verbose {
462 |         let frame_count = source_frame_count.or(distorted_frame_count);
463 |         let pb = if let Some(frame_count) = frame_count {
464 |             let fc = frames_to_compare.unwrap_or(frame_count - skip_frames)
465 |                 .min(((frame_count - skip_frames) as f64 / inc as f64).ceil() as usize);
466 | 
467 |             ProgressBar::new(fc as u64)
468 |                 .with_style(pretty_progress_style())
469 |                 .with_message(", avg: N/A")
470 |         } else {
471 |             ProgressBar::new_spinner().with_style(pretty_spinner_style())
472 |         };
473 |         pb.set_draw_target(ProgressDrawTarget::stderr());
474 |         pb.enable_steady_tick(Duration::from_millis(100));
475 |         pb.reset();
476 |         pb.reset_eta();
477 |         pb.reset_elapsed();
478 |         pb.set_position(0);
479 |         pb
480 |     } else {
481 |         ProgressBar::hidden()
482 |     };
483 | 
484 |     let mut results = BTreeMap::new();
485 |     let mut rolling_mean = 0f64;
486 |     for score in result_rx {
487 |         if verbose {
488 |             println!("Frame {}: {:.8}", score.0, score.1);
489 |         }
490 | 
491 |         results.insert(score.0, score.1);
492 |         rolling_mean = rolling_mean + (score.1 - rolling_mean) / (results.len() as f64);
493 |         progress.set_message(format!(", mean: {rolling_mean:.2}"));
494 |         progress.inc(1);
495 |     }
496 | 
497 |     progress.finish();
498 | 
499 |     let results: Vec<f64> = results.into_values().collect();
500 |     let frames = results.len();
501 |     let mut data = Data::new(results.clone());
502 |     println!("Video Score for {} frames", frames);
503 |     println!("Mean: {:.8}", data.mean().unwrap());
504 |     println!("Median: {:.8}", data.median());
505 |     println!("Std Dev: {:.8}", data.std_dev().unwrap());
506 |     println!("5th Percentile: {:.8}", data.percentile(5));
507 |     println!("95th Percentile: {:.8}", data.percentile(95));
508 | 
509 |     if graph {
510 |         use plotters::prelude::*;
511 | 
512 |         let out_path = PathBuf::from(format!(
513 |             "ssimulacra2-video-{}.png",
514 |             SystemTime::now()
515 |                 .duration_since(UNIX_EPOCH)
516 |                 .unwrap()
517 |                 .as_secs()
518 |         ));
519 |         let width = 1500u32;
520 |         let height = 1000u32;
521 |         let mut image_buffer = vec![0; (width * height * 3) as usize].into_boxed_slice();
522 | 
523 |         {
524 |             let root =
525 |                 BitMapBackend::with_buffer(&mut image_buffer, (width, height)).into_drawing_area();
526 |             root.fill(&BLACK).unwrap();
527 |             let mut chart = ChartBuilder::on(&root)
528 |                 .set_label_area_size(LabelAreaPosition::Left, 60)
529 |                 .set_label_area_size(LabelAreaPosition::Bottom, 60)
530 |                 .caption("SSIMULACRA2", ("sans-serif", 50.0))
531 |                 .build_cartesian_2d(0..frames, 0f32..100f32)
532 |                 .unwrap();
533 |             chart
534 |                 .configure_mesh()
535 |                 .disable_x_mesh()
536 |                 .bold_line_style(WHITE.mix(0.3))
537 |                 .y_desc("Score")
538 |                 .y_label_style(("sans-serif", 16, &WHITE))
539 |                 .x_desc("Frame")
540 |                 .x_label_style(("sans-serif", 16, &WHITE))
541 |                 .axis_desc_style(("sans-serif", 18, &WHITE))
542 |                 .draw()
543 |                 .unwrap();
544 |             chart
545 |                 .draw_series(
546 |                     AreaSeries::new(
547 |                         results.into_iter().enumerate().map(|(i, v)| (i, v as f32)),
548 |                         0.0,
549 |                         CYAN.mix(0.5),
550 |                     )
551 |                     .border_style(CYAN.filled()),
552 |                 )
553 |                 .unwrap();
554 |             root.present().expect("Unable to generate image");
555 |         }
556 | 
557 |         image::save_buffer(&out_path, &image_buffer, width, height, ColorType::Rgb8)
558 |             .expect("Unable to save graph image");
559 | 
560 |         println!();
561 |         println!("Graph written to {}", out_path.to_string_lossy());
562 |     }
563 | }
564 | 
565 | pub fn parse_matrix(input: &str) -> MatrixCoefficients {
566 |     if let Ok(intval) = input.parse::<u8>() {
567 |         if intval <= MatrixCoefficients::ICtCp as u8 {
568 |             return MatrixCoefficients::from_u8(intval).expect("Invalid matrix coefficient value");
569 |         }
570 |     }
571 | 
572 |     match input.to_ascii_lowercase().as_str() {
573 |         "identity" | "rgb" | "srgb" | "smpte428" | "xyz" => MatrixCoefficients::Identity,
574 |         "709" | "bt709" => MatrixCoefficients::BT709,
575 |         "unspecified" => MatrixCoefficients::Unspecified,
576 |         "bt470m" | "470m" => MatrixCoefficients::BT470M,
577 |         "bt470bg" | "470bg" | "601-625" | "bt601-625" | "pal" => MatrixCoefficients::BT470BG,
578 |         "smpte170m" | "170m" | "601-525" | "bt601-525" | "bt601" | "601" | "ntsc" => {
579 |             MatrixCoefficients::ST170M
580 |         }
581 |         "240m" | "smpte240m" => MatrixCoefficients::ST240M,
582 |         "ycgco" => MatrixCoefficients::YCgCo,
583 |         "2020" | "2020ncl" | "2020-ncl" | "bt2020" | "bt2020ncl" | "bt2020-ncl" => {
584 |             MatrixCoefficients::BT2020NonConstantLuminance
585 |         }
586 |         "2020cl" | "2020-cl" | "bt2020cl" | "bt2020-cl" => {
587 |             MatrixCoefficients::BT2020ConstantLuminance
588 |         }
589 |         "2085" | "smpte2085" => MatrixCoefficients::ST2085,
590 |         "cd-ncl" => MatrixCoefficients::ChromaticityDerivedNonConstantLuminance,
591 |         "cd-cl" => MatrixCoefficients::ChromaticityDerivedConstantLuminance,
592 |         "2100" | "bt2100" | "ictcp" => MatrixCoefficients::ICtCp,
593 |         _ => panic!("Unrecognized matrix coefficient string"),
594 |     }
595 | }
596 | 
597 | pub fn parse_transfer(input: &str) -> TransferCharacteristic {
598 |     if let Ok(intval) = input.parse::<u8>() {
599 |         if intval <= TransferCharacteristic::HybridLogGamma as u8 {
600 |             return TransferCharacteristic::from_u8(intval)
601 |                 .expect("Invalid transfer characteristics value");
602 |         }
603 |     }
604 | 
605 |     match input.to_ascii_lowercase().as_str() {
606 |         "709" | "bt709" | "1886" | "bt1886" | "1361" | "bt1361" => TransferCharacteristic::BT1886,
607 |         "unspecified" => TransferCharacteristic::Unspecified,
608 |         "470m" | "bt470m" | "pal" => TransferCharacteristic::BT470M,
609 |         "470bg" | "bt470bg" => TransferCharacteristic::BT470BG,
610 |         "601" | "bt601" | "ntsc" | "smpte170m" | "170m" | "1358" | "bt1358" | "1700" | "bt1700" => {
611 |             TransferCharacteristic::ST170M
612 |         }
613 |         "240m" | "smpte240m" => TransferCharacteristic::ST240M,
614 |         "linear" => TransferCharacteristic::Linear,
615 |         "log100" => TransferCharacteristic::Logarithmic100,
616 |         "log316" => TransferCharacteristic::Logarithmic316,
617 |         "xvycc" => TransferCharacteristic::XVYCC,
618 |         "1361e" | "bt1361e" => TransferCharacteristic::BT1361E,
619 |         "srgb" => TransferCharacteristic::SRGB,
620 |         "2020" | "bt2020" | "2020-10" | "bt2020-10" => TransferCharacteristic::BT2020Ten,
621 |         "2020-12" | "bt2020-12" => TransferCharacteristic::BT2020Twelve,
622 |         "pq" | "2084" | "smpte2084" | "2100" | "bt2100" => {
623 |             TransferCharacteristic::PerceptualQuantizer
624 |         }
625 |         "428" | "smpte428" => TransferCharacteristic::ST428,
626 |         "hlg" | "b67" | "arib-b67" => TransferCharacteristic::HybridLogGamma,
627 |         _ => panic!("Unrecognized transfer characteristics string"),
628 |     }
629 | }
630 | 
631 | pub fn parse_primaries(input: &str) -> ColorPrimaries {
632 |     if let Ok(intval) = input.parse::<u8>() {
633 |         if intval <= ColorPrimaries::Tech3213 as u8 {
634 |             return ColorPrimaries::from_u8(intval).expect("Invalid color primaries value");
635 |         }
636 |     }
637 | 
638 |     match input.to_ascii_lowercase().as_str() {
639 |         "709" | "bt709" | "1361" | "bt1361" | "srgb" => ColorPrimaries::BT709,
640 |         "unspecified" => ColorPrimaries::Unspecified,
641 |         "470m" | "bt470m" => ColorPrimaries::BT470M,
642 |         "470bg" | "bt470bg" | "601-625" | "bt601-625" | "pal" => ColorPrimaries::BT470BG,
643 |         "smpte170m" | "170m" | "601-525" | "bt601-525" | "bt601" | "601" | "ntsc" => {
644 |             ColorPrimaries::ST170M
645 |         }
646 |         "240m" | "smpte240m" => ColorPrimaries::ST240M,
647 |         "film" | "c" => ColorPrimaries::Film,
648 |         "2020" | "bt2020" | "2100" | "bt2100" => ColorPrimaries::BT2020,
649 |         "428" | "smpte428" | "xyz" => ColorPrimaries::ST428,
650 |         "p3" | "p3dci" | "p3-dci" | "431" | "smpte431" => ColorPrimaries::P3DCI,
651 |         "p3display" | "p3-display" | "432" | "smpte432" => ColorPrimaries::P3Display,
652 |         "3213" | "tech3213" => ColorPrimaries::Tech3213,
653 |         _ => panic!("Unrecognized color primaries string"),
654 |     }
655 | }
656 | 
657 | pub const fn guess_matrix_coefficients(width: usize, height: usize) -> MatrixCoefficients {
658 |     if width >= 1280 || height > 576 {
659 |         MatrixCoefficients::BT709
660 |     } else if height == 576 {
661 |         MatrixCoefficients::BT470BG
662 |     } else {
663 |         MatrixCoefficients::ST170M
664 |     }
665 | }
666 | 
667 | // Heuristic taken from mpv
668 | pub fn guess_color_primaries(
669 |     matrix: MatrixCoefficients,
670 |     width: usize,
671 |     height: usize,
672 | ) -> ColorPrimaries {
673 |     if matrix == MatrixCoefficients::BT2020NonConstantLuminance
674 |         || matrix == MatrixCoefficients::BT2020ConstantLuminance
675 |     {
676 |         ColorPrimaries::BT2020
677 |     } else if matrix == MatrixCoefficients::BT709 || width >= 1280 || height > 576 {
678 |         ColorPrimaries::BT709
679 |     } else if height == 576 {
680 |         ColorPrimaries::BT470BG
681 |     } else if height == 480 || height == 488 {
682 |         ColorPrimaries::ST170M
683 |     } else {
684 |         ColorPrimaries::BT709
685 |     }
686 | }
687 | 


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