Playlist implémentée testée

Cargo.lock

@@ -369,6 +369,12 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "file-format"
+version = "0.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ffe3a660c3a1b10e96f304a9413d673b2118d62e4520f7ddf4a4faccfe8b9b9"
+
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -906,6 +912,19 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_yaml"
+version = "0.9.34+deprecated"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a8b1a1a2ebf674015cc02edccce75287f1a0130d394307b36743c2f5d504b47"
+dependencies = [
+ "indexmap",
+ "itoa",
+ "ryu",
+ "serde",
+ "unsafe-libyaml",
+]
+
 [[package]]
 name = "sha2"
 version = "0.9.9"
@@ -946,9 +965,12 @@ checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 name = "sweetmusic"
 version = "0.1.0"
 dependencies = [
+ "file-format",
  "metadata",
  "regex",
  "rodio",
+ "serde",
+ "serde_yaml",
 ]
 
 [[package]]
@@ -1201,6 +1223,12 @@ version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0336d538f7abc86d282a4189614dfaa90810dfc2c6f6427eaf88e16311dd225d"
 
+[[package]]
+name = "unsafe-libyaml"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "673aac59facbab8a9007c7f6108d11f63b603f7cabff99fabf650fea5c32b861"
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"

Cargo.toml

@@ -4,6 +4,9 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+file-format = "0.25.0"
 metadata = "0.1.9"
 regex = "1.10.6"
 rodio = { version = "0.19.0", features = ["symphonia-all"] }
+serde = { version = "1.0.206", features = ["derive"] }
+serde_yaml = "0.9.34"

README.md

@@ -0,0 +1,10 @@
+# BazNew
+
+Because newer is better.
+
+## TODO
+* SongMeta -> Implémenté, testé
+* Playlist -> Implémenté, testé
+* Player -> TODO : voir proto.rs pour la structure et les méthodes.
+* UI -> Après ces trois là. D'abord, faire le player en mode headless.
+

cool.yml

@@ -0,0 +1,20 @@
+---
+songs:
+- title: Big Cheese
+  artist: Nirvana
+  album: Bleach
+  track: 12
+  duration:
+    secs: 221
+    nanos: 0
+  cover_path: /home/justine/NAS/Musique/A_classer/Bleach/cover.jpg
+  path: /home/justine/NAS/Musique/A_classer/Bleach/12 Big Cheese.mp3
+- title: Dods...
+  artist: Galaverna
+  album: Dodsdans
+  track: 1
+  duration:
+    secs: 148
+    nanos: 0
+  cover_path: /home/justine/NAS/Musique/Folk/Galaverna - Dodsdans/cover.jpg
+  path: /home/justine/NAS/Musique/Folk/Galaverna - Dodsdans/Galaverna - Dodsdans - 01 Dods....flac

src/main.rs

@@ -1,10 +1,18 @@
 pub mod songmeta;
 use crate::songmeta::songmeta::*;
 
+pub mod playlist;
+use crate::playlist::playlist::*;
+
 fn main() {
     let mysong = SongMeta::frompath(&String::from("/home/justine/NAS/Musique/A_classer/Bleach/12 Big Cheese.mp3"));
-    dbg!(mysong);
+    let mysong2 = SongMeta::frompath(&String::from("/home/justine/NAS/Musique/Folk/Galaverna - Dodsdans/Galaverna - Dodsdans - 01 Dods....flac"));
 
-    let mysong2 = SongMeta::frompath(&String::from("/home/justine/NAS/Musique/Folk/Galaverna - Dodsdans/Galaverna - Dodsdans - 07 Smell of ember.flac"));
-    dbg!(mysong2);
+
+    //playlist.remove(0).unwrap();
+    let playlist = Playlist::from_file(&String::from("./cool.yml"));
+
+    dbg!(playlist);
 }
+
+

src/playlist.rs

@@ -1,31 +1,117 @@
-pub mod songmeta;
-use crate::songmeta::songmeta::*;
+pub mod playlist {
 
-///Stores a list of SongMetas
-#[derive(Debug, Clone)]
-struct Playlist {
-    songs: Vec<SongMeta>,
+    use std::path::{Path,PathBuf};
+    use std::error::Error;
+    use std::fmt;
+    use std::fs;
+    use serde::{Deserialize, Serialize};
+    use crate::songmeta::songmeta::*;
+    use std::io::Write;
+
+
+
+
+    //----------------ERROR
+
+    #[derive(Debug)]
+    pub enum PlaylistError {
+        IndexNotFound,
+        FileNotFound,
+        FileCantWrite,
     }
 
-#[derive(Debug, Clone)]
-enum PlaylistError {
-    IndexNotFound,
-    SomethingElse,
+    impl fmt::Display for PlaylistError {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            match self {
+                PlaylistError::IndexNotFound => write!(f, "Playlist does not have that index"),
+                PlaylistError::FileNotFound => write!(f, "Given playlist file is not readable or does not exist"),
+                PlaylistError::FileCantWrite => write!(f, "Can't write playlist file at the given path. Is it valid ?"),
+            }
+        }
+    }
+
+    impl Error for PlaylistError {}
+
+
+    //----------------STRUCT
+
+    ///Stores a list of SongMetas to be used with a player.
+    ///Index starts at zero ! 
+    #[derive(Debug, Clone, Serialize, Deserialize)]
+    pub struct Playlist {
+        pub songs: Vec<SongMeta>,
     }
 
     impl Playlist {
         ///Returns a new empty playlist.
-    fn new() -> Self {
+        pub fn new() -> Self {
             Self {
                 songs: vec![],
             }
         }
 
-    ///Returns a playlist from a file containing a list of audiofile paths.
-    fn from_file(path: &Path) -> Self;
+        ///Returns a playlist from a file.
+        ///File must be yaml
+        pub fn from_file(path: &String) -> Result<Self, Box<dyn Error>> {
+
+            let p = Path::new(path);
+
+            //Check existence
+            if !p.exists() {
+                return Err(Box::new(PlaylistError::FileNotFound));
+            }
+
+            //Read the yaml
+            let content = fs::read_to_string(p)?;
+            let res: Playlist = serde_yaml::from_str(&content)?;
+            return Ok(res);
+        }
+
+        ///Writes the playlist with its index to a file with the path p
+        ///Path must be fully qualified
+        pub fn to_file(&self, path: &String) -> Result<(), Box<dyn Error>>{
+            let p = Path::new(&path);
+
+            //Check parent
+            let mut parent = PathBuf::from(path);
+            let _ = &parent.pop();
+            if !&parent.exists() {
+                return Err(Box::new(PlaylistError::FileCantWrite));
+            }
+
+            //Serialize and write
+            let serialized = serde_yaml::to_string(&self.clone())?;
+            let mut file = fs::OpenOptions::new()
+                .write(true)
+                .append(false)
+                .create(true)
+                .open(&p)?;
+            file.write_all(format!("---\n{}", serialized).as_bytes())?;
+            return Ok(());
+        }
+
+        ///shortcut to myplaylist.songs.push(SongMeta::frompath(&String::from("/a/file/path")))
+        pub fn add_song_from_path(&mut self, path: &String) -> Result<(), Box<dyn Error>> {
+            let song = SongMeta::frompath(path)?;
+            self.songs.push(song);
+            return Ok(());
+        }
+
+        ///Checks if a number is a valid index in this playlist.
+        pub fn check_index(&self, index: usize) -> bool {
+            if index > self.songs.len() {
+                return false;
+            }
+            return true;
+        }
 
         ///Removes a song at index (if possible)
-    fn pop() -> Result<(), PlayListError>;
-
-
+        pub fn remove(&mut self, index: usize) -> Result<(), Box<dyn Error>> {
+            if !self.check_index(index.clone()) {
+                return Err(Box::new(PlaylistError::IndexNotFound));
+            }
+            self.songs.remove(index);
+            return Ok(());
+        }
+    }
 }

src/proto.rs

@@ -8,11 +8,7 @@ use rodio::{Decoder, OutputStream, Sink, Source};
 //-----------------------------------------Structs
 
 
-///Stores a list of SongMetas
-#[derive(Debug, Clone)]
-struct Playlist {
-    songs: Vec<SongMeta>,
-}
+
 
 struct AudioPlayer {
     sink: Sink,
@@ -27,33 +23,10 @@ enum PlayerError {
     SomethingElse,
 }
 
-
-#[derive(Debug, Clone)]
-enum PlaylistError {
-    IndexNotFound,
-    SomethingElse,
-}
-
-
 //-------------------------------------Impls
 
 
-impl Playlist {
-    ///Returns a new empty playlist.
-    fn new() -> Self {
-        Self {
-            songs: vec![],
-        }
-    }
 
-    ///Returns a playlist from a file containing a list of audiofile paths.
-    fn from_file(path: &Path) -> Self;
-
-    ///Removes a song at index (if possible)
-    fn pop() -> Result<(), PlayListError>;
-
-
-}
 
 impl AudioPlayer {
 
@@ -87,11 +60,17 @@ impl AudioPlayer {
         self.playlist.append(&mut playlist);
     }
 
+    //renvoie un result, avance d'une chanson
     fn skip_forward(&mut self);
+    //renvoie un result, recule d'une chanson
     fn skip_backwards(&mut self);
+    //met en pause renvoie un result
     fn pause(&mut self);
+    //Enleve la pause ou lit la première chanson de la playlist renvoie un result
     fn play(&mut self);
+    //Change le volume envoie un result
     fn set_vol(&mut self, vol: f32);
+    //Saute à la chanson donnée renvoie un result
     fn goto(&mut self, index: usize) -> Result<(), PlayerError>;
 }
 

src/songmeta.rs

@@ -7,19 +7,12 @@ pub mod songmeta {
     use std::ffi::OsStr;
     use metadata::media_file::MediaFileMetadata;
     use std::time::Duration;
+    use file_format::FileFormat;
+    use serde::{Deserialize, Serialize};
+    use std::io::Write;
 
-    ///Stores metadata about a song.
-    #[derive(Debug, Clone)]
-    pub struct SongMeta {
-        pub title: String,
-        pub artist: String,
-        pub album: String,
-        pub track: usize,
-        pub duration: Duration,
-        pub cover_path: Option<String>,
-        pub path: String,
-    }
 
+    //----------------------------ERROR
     #[derive(Debug)]
     pub enum SongError {
         ///Given path is not existing or is not a media file.
@@ -39,6 +32,20 @@ pub mod songmeta {
 
     impl Error for SongError {}
 
+    //----------------------------STRUCT
+
+    ///Stores metadata about a song.
+    #[derive(Debug, Clone, Serialize, Deserialize)]
+    pub struct SongMeta {
+        pub title: String,
+        pub artist: String,
+        pub album: String,
+        pub track: usize,
+        pub duration: Duration,
+        pub cover_path: Option<String>,
+        pub path: String,
+    }
+
 
     impl SongMeta {
 
@@ -46,6 +53,10 @@ pub mod songmeta {
         ///Returns an error if need be.
         ///Also looks for the path of the cover, which may be None.
         pub fn frompath(path: &String) -> Result<Self, Box<dyn Error>> {
+            if !SongMeta::validate_file(path) {
+                return Err(Box::new(SongError::NotAudio));
+            }
+
             let fpath = Path::new(path);
             let md = match MediaFileMetadata::new(&fpath) {
                 Ok(v) => v,
@@ -142,5 +153,30 @@ pub mod songmeta {
             }
             return None;
         }
+
+        ///Validates that the file at path is audio.
+        fn validate_file(path: &String) -> bool {
+            let valid_formats = vec![
+                "audio/mpeg",
+                "audio/x-flac",
+                "audio/ogg",
+                "audio/vnd.wave",
+                "audio/aac",
+            ];
+    
+            let fmt = match FileFormat::from_file(path.as_str()) {
+                Ok(v) => v,
+                Err(_) => {
+                    return false;
+                }
+            };
+    
+            if valid_formats.contains(&fmt.media_type()) {
+                return true;
+            }
+            return false;
         }
     }
+}
+
+