split property parsing from event parsing:

High-level properties are now optional, considering there are about a
thousand of them to parse. The high-level properties are a few chosen
ones that I suspect might be useful for most people, with catch-all enum
variants for the less common ones.

src/core_api.rs

@@ -75,6 +75,7 @@ pub enum MpvDataType {
     Double(f64),
     HashMap(HashMap<String, MpvDataType>),
     Null,
+    MinusOne,
     Playlist(Playlist),
     String(String),
     Usize(usize),

src/event_parser.rs

@@ -1,29 +1,67 @@
 //! JSON parsing logic for events from [`MpvIpc`](crate::ipc::MpvIpc).
 
-use std::collections::HashMap;
+use std::str::FromStr;
 
 use serde::{Deserialize, Serialize};
 use serde_json::{Map, Value};
 
-use crate::{ipc::MpvIpcEvent, Error, ErrorCode, MpvDataType};
+use crate::{ipc::MpvIpcEvent, message_parser::json_to_value, Error, ErrorCode, MpvDataType};
 
-/// All possible properties that can be observed through the event system.
-///
-/// Not all properties are guaranteed to be implemented.
-/// If something is missing, please open an issue.
-///
-/// Otherwise, the property will be returned as a `Property::Unknown` variant.
-///
-/// See <https://mpv.io/manual/master/#properties> for
-/// the upstream list of properties.
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
-pub enum Property {
-    Path(Option<String>),
-    Pause(bool),
-    PlaybackTime(Option<f64>),
-    Duration(Option<f64>),
-    Metadata(Option<HashMap<String, MpvDataType>>),
-    Unknown { name: String, data: MpvDataType },
+#[serde(rename_all = "kebab-case")]
+pub enum EventEndFileReason {
+    Eof,
+    Stop,
+    Quit,
+    Error,
+    Redirect,
+    Unknown,
+    Unimplemented(String),
+}
+
+impl FromStr for EventEndFileReason {
+    type Err = ();
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "eof" => Ok(EventEndFileReason::Eof),
+            "stop" => Ok(EventEndFileReason::Stop),
+            "quit" => Ok(EventEndFileReason::Quit),
+            "error" => Ok(EventEndFileReason::Error),
+            "redirect" => Ok(EventEndFileReason::Redirect),
+            reason => Ok(EventEndFileReason::Unimplemented(reason.to_string())),
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case")]
+pub enum EventLogMessageLevel {
+    Info,
+    Warn,
+    Error,
+    Fatal,
+    Verbose,
+    Debug,
+    Trace,
+    Unimplemented(String),
+}
+
+impl FromStr for EventLogMessageLevel {
+    type Err = ();
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "info" => Ok(EventLogMessageLevel::Info),
+            "warn" => Ok(EventLogMessageLevel::Warn),
+            "error" => Ok(EventLogMessageLevel::Error),
+            "fatal" => Ok(EventLogMessageLevel::Fatal),
+            "verbose" => Ok(EventLogMessageLevel::Verbose),
+            "debug" => Ok(EventLogMessageLevel::Debug),
+            "trace" => Ok(EventLogMessageLevel::Trace),
+            level => Ok(EventLogMessageLevel::Unimplemented(level.to_string())),
+        }
+    }
 }
 
 /// All possible events that can be sent by mpv.
@@ -36,29 +74,90 @@ pub enum Property {
 /// See <https://mpv.io/manual/master/#list-of-events> for
 /// the upstream list of events.
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case")]
 pub enum Event {
-    Shutdown,
-    StartFile,
-    EndFile,
+    StartFile {
+        playlist_entry_id: usize,
+    },
+    EndFile {
+        reason: EventEndFileReason,
+        playlist_entry_id: usize,
+        file_error: Option<String>,
+        playlist_insert_id: Option<usize>,
+        playlist_insert_num_entries: Option<usize>,
+    },
     FileLoaded,
-    TracksChanged,
-    TrackSwitched,
-    Idle,
-    Pause,
-    Unpause,
-    Tick,
-    VideoReconfig,
-    AudioReconfig,
-    MetadataUpdate,
     Seek,
     PlaybackRestart,
-    PropertyChange { id: usize, property: Property },
+    Shutdown,
+    LogMessage {
+        prefix: String,
+        level: EventLogMessageLevel,
+        text: String,
+    },
+    Hook {
+        hook_id: usize,
+    },
+    GetPropertyReply,
+    SetPropertyReply,
+    CommandReply {
+        result: String,
+    },
+    ClientMessage {
+        args: Vec<String>,
+    },
+    VideoReconfig,
+    AudioReconfig,
+    PropertyChange {
+        id: usize,
+        name: String,
+        data: MpvDataType,
+    },
+    EventQueueOverflow,
+    None,
+
+    /// Deprecated since mpv v0.33.0
+    Idle,
+
+    /// Deprecated since mpv v0.31.0
+    Tick,
+
+    /// Deprecated since mpv v0.7.0, removed in mpv v0.35.0
+    TracksChanged,
+
+    /// Deprecated since mpv v0.7.0, removed in mpv v0.35.0
+    TrackSwitched,
+
+    /// Deprecated since mpv v0.7.0, removed in mpv v0.35.0
+    Pause,
+
+    /// Deprecated since mpv v0.7.0, removed in mpv v0.35.0
+    Unpause,
+
+    /// Deprecated since mpv v0.7.0, removed in mpv v0.35.0
+    MetadataUpdate,
+
+    /// Deprecated since mpv v0.7.0, removed in mpv v0.35.0
     ChapterChange,
-    ClientMessage { args: Vec<String> },
-    Unimplemented,
+
+    /// Deprecated since mpv v0.7.0, removed in mpv v0.35.0
+    ScriptInputDispatch,
+
+    /// Catch-all for unimplemented events
+    Unimplemented(Map<String, Value>),
 }
 
+// NOTE: I have not been able to test all of these events,
+//       so some of the parsing logic might be incorrect.
+//       In particular, I have not been able to make mpv
+//       produce any of the commented out events, and since
+//       the documentation for the most part just says
+//       "See C API", I have not pursued this further.
+//
+//       If you need this, please open an issue or a PR.
+
 /// Parse a highlevel [`Event`] objects from json.
+#[allow(deprecated)]
 pub(crate) fn parse_event(raw_event: MpvIpcEvent) -> Result<Event, Error> {
     let MpvIpcEvent(event) = raw_event;
 
@@ -73,25 +172,113 @@ pub(crate) fn parse_event(raw_event: MpvIpcEvent) -> Result<Event, Error> {
                 .ok_or(Error(ErrorCode::ValueDoesNotContainString))?;
 
             match event_name {
-                "shutdown" => Ok(Event::Shutdown),
-                "start-file" => Ok(Event::StartFile),
-                "end-file" => Ok(Event::EndFile),
+                "start-file" => parse_start_file(event),
+                "end-file" => parse_end_file(event),
                 "file-loaded" => Ok(Event::FileLoaded),
-                "tracks-changed" => Ok(Event::TracksChanged),
-                "track-switched" => Ok(Event::TrackSwitched),
-                "idle" => Ok(Event::Idle),
-                "pause" => Ok(Event::Pause),
-                "unpause" => Ok(Event::Unpause),
-                "tick" => Ok(Event::Tick),
-                "video-reconfig" => Ok(Event::VideoReconfig),
-                "audio-reconfig" => Ok(Event::AudioReconfig),
-                "metadata-update" => Ok(Event::MetadataUpdate),
                 "seek" => Ok(Event::Seek),
                 "playback-restart" => Ok(Event::PlaybackRestart),
-                "property-change" => parse_event_property(event)
-                    .map(|(id, property)| Event::PropertyChange { id, property }),
+                "shutdown" => Ok(Event::Shutdown),
+                "log-message" => parse_log_message(event),
+                "hook" => parse_hook(event),
+                // "get-property-reply" =>
+                // "set-property-reply" =>
+                // "command-reply" =>
+                "client-message" => parse_client_message(event),
+                "video-reconfig" => Ok(Event::VideoReconfig),
+                "audio-reconfig" => Ok(Event::AudioReconfig),
+                "property-change" => parse_property_change(event),
+                "tick" => Ok(Event::Tick),
+                "idle" => Ok(Event::Idle),
+                "tracks-changed" => Ok(Event::TracksChanged),
+                "track-switched" => Ok(Event::TrackSwitched),
+                "pause" => Ok(Event::Pause),
+                "unpause" => Ok(Event::Unpause),
+                "metadata-update" => Ok(Event::MetadataUpdate),
                 "chapter-change" => Ok(Event::ChapterChange),
-                "client-message" => {
+                _ => Ok(Event::Unimplemented(event.to_owned())),
+            }
+        })
+}
+
+fn parse_start_file(event: &Map<String, Value>) -> Result<Event, Error> {
+    let playlist_entry_id = event
+        .get("playlist_entry_id")
+        .ok_or(Error(ErrorCode::MissingValue))?
+        .as_u64()
+        .ok_or(Error(ErrorCode::ValueDoesNotContainUsize))? as usize;
+    Ok(Event::StartFile { playlist_entry_id })
+}
+
+fn parse_end_file(event: &Map<String, Value>) -> Result<Event, Error> {
+    let reason = event
+        .get("reason")
+        .ok_or(Error(ErrorCode::MissingValue))?
+        .as_str()
+        .ok_or(Error(ErrorCode::ValueDoesNotContainString))?;
+    let playlist_entry_id = event
+        .get("playlist_entry_id")
+        .ok_or(Error(ErrorCode::MissingValue))?
+        .as_u64()
+        .ok_or(Error(ErrorCode::ValueDoesNotContainUsize))? as usize;
+    let file_error = event
+        .get("file_error")
+        .and_then(|v| v.as_str().map(|s| s.to_string()));
+    let playlist_insert_id = event
+        .get("playlist_insert_id")
+        .and_then(|v| v.as_u64().map(|u| u as usize));
+    let playlist_insert_num_entries = event
+        .get("playlist_insert_num_entries")
+        .and_then(|v| v.as_u64().map(|u| u as usize));
+
+    Ok(Event::EndFile {
+        reason: reason
+            .parse()
+            .unwrap_or(EventEndFileReason::Unimplemented(reason.to_string())),
+        playlist_entry_id,
+        file_error,
+        playlist_insert_id,
+        playlist_insert_num_entries,
+    })
+}
+
+fn parse_log_message(event: &Map<String, Value>) -> Result<Event, Error> {
+    let prefix = event
+        .get("prefix")
+        .ok_or(Error(ErrorCode::MissingValue))?
+        .as_str()
+        .ok_or(Error(ErrorCode::ValueDoesNotContainString))?
+        .to_string();
+    let level = event
+        .get("level")
+        .ok_or(Error(ErrorCode::MissingValue))?
+        .as_str()
+        .ok_or(Error(ErrorCode::ValueDoesNotContainString))?;
+    let text = event
+        .get("text")
+        .ok_or(Error(ErrorCode::MissingValue))?
+        .as_str()
+        .ok_or(Error(ErrorCode::ValueDoesNotContainString))?
+        .to_string();
+
+    Ok(Event::LogMessage {
+        prefix,
+        level: level
+            .parse()
+            .unwrap_or(EventLogMessageLevel::Unimplemented(level.to_string())),
+        text,
+    })
+}
+
+fn parse_hook(event: &Map<String, Value>) -> Result<Event, Error> {
+    let hook_id = event
+        .get("hook_id")
+        .ok_or(Error(ErrorCode::MissingValue))?
+        .as_u64()
+        .ok_or(Error(ErrorCode::ValueDoesNotContainUsize))? as usize;
+    Ok(Event::Hook { hook_id })
+}
+
+fn parse_client_message(event: &Map<String, Value>) -> Result<Event, Error> {
     let args = event
         .get("args")
         .ok_or(Error(ErrorCode::MissingValue))?
@@ -105,14 +292,9 @@ pub(crate) fn parse_event(raw_event: MpvIpcEvent) -> Result<Event, Error> {
         })
         .collect::<Result<Vec<String>, Error>>()?;
     Ok(Event::ClientMessage { args })
-                }
-                _ => Ok(Event::Unimplemented),
-            }
-        })
 }
 
-/// Parse a highlevel [`Property`] object from json, used for [`Event::PropertyChange`].
-fn parse_event_property(event: &Map<String, Value>) -> Result<(usize, Property), Error> {
+fn parse_property_change(event: &Map<String, Value>) -> Result<Event, Error> {
     let id = event
         .get("id")
         .ok_or(Error(ErrorCode::MissingValue))?
@@ -123,38 +305,14 @@ fn parse_event_property(event: &Map<String, Value>) -> Result<(usize, Property),
         .ok_or(Error(ErrorCode::MissingValue))?
         .as_str()
         .ok_or(Error(ErrorCode::ValueDoesNotContainString))?;
-
-    match property_name {
-        "path" => {
-            let path = event
-                .get("data")
-                .ok_or(Error(ErrorCode::MissingValue))?
-                .as_str()
-                .map(|s| s.to_string());
-            Ok((id, Property::Path(path)))
-        }
-        "pause" => {
-            let pause = event
-                .get("data")
-                .ok_or(Error(ErrorCode::MissingValue))?
-                .as_bool()
-                .ok_or(Error(ErrorCode::ValueDoesNotContainBool))?;
-            Ok((id, Property::Pause(pause)))
-        }
-        // TODO: missing cases
-        _ => {
     let data = event
         .get("data")
         .ok_or(Error(ErrorCode::MissingValue))?
         .clone();
-            Ok((
+
+    Ok(Event::PropertyChange {
         id,
-                Property::Unknown {
         name: property_name.to_string(),
-                    // TODO: fix
-                    data: MpvDataType::Double(data.as_f64().unwrap_or(0.0)),
-                },
-            ))
-        }
-    }
+        data: json_to_value(&data)?,
+    })
 }

src/event_property_parser.rs

@@ -0,0 +1,171 @@
+//! JSON parsing logic for properties returned in [`Event::PropertyChange`]
+//!
+//! This module is used to parse the json data from the `data` field of the
+//! [`Event::PropertyChange`] variant. Mpv has about 1000 different properties
+//! as of `v0.38.0`, so this module will only implement the most common ones.
+
+use std::collections::HashMap;
+
+use serde::{Deserialize, Serialize};
+
+use crate::{Error, ErrorCode, Event, MpvDataType, PlaylistEntry};
+
+/// All possible properties that can be observed through the event system.
+///
+/// Not all properties are guaranteed to be implemented.
+/// If something is missing, please open an issue.
+///
+/// Otherwise, the property will be returned as a `Property::Unknown` variant.
+///
+/// See <https://mpv.io/manual/master/#properties> for
+/// the upstream list of properties.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case")]
+pub enum Property {
+    Path(Option<String>),
+    Pause(bool),
+    PlaybackTime(Option<f64>),
+    Duration(Option<f64>),
+    Metadata(Option<HashMap<String, MpvDataType>>),
+    Playlist(Vec<PlaylistEntry>),
+    PlaylistPos(Option<usize>),
+    LoopFile(LoopProperty),
+    LoopPlaylist(LoopProperty),
+    Speed(f64),
+    Volume(f64),
+    Mute(bool),
+    Unknown { name: String, data: MpvDataType },
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case")]
+pub enum LoopProperty {
+    N(usize),
+    Inf,
+    No,
+}
+
+/// Parse a highlevel [`Property`] object from json, used for [`Event::PropertyChange`].
+pub fn parse_event_property(event: Event) -> Result<(usize, Property), Error> {
+    let (id, name, data) = match event {
+        Event::PropertyChange { id, name, data } => (id, name, data),
+        // TODO: return proper error
+        _ => {
+            panic!("Event is not a PropertyChange event")
+        }
+    };
+
+    match name.as_str() {
+        "path" => {
+            let path = match data {
+                MpvDataType::String(s) => Some(s),
+                MpvDataType::Null => None,
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainString)),
+            };
+            Ok((id, Property::Path(path)))
+        }
+        "pause" => {
+            let pause = match data {
+                MpvDataType::Bool(b) => b,
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainBool)),
+            };
+            Ok((id, Property::Pause(pause)))
+        }
+        "playback-time" => {
+            let playback_time = match data {
+                MpvDataType::Double(d) => Some(d),
+                MpvDataType::Null => None,
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainF64)),
+            };
+            Ok((id, Property::PlaybackTime(playback_time)))
+        }
+        "duration" => {
+            let duration = match data {
+                MpvDataType::Double(d) => Some(d),
+                MpvDataType::Null => None,
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainF64)),
+            };
+            Ok((id, Property::Duration(duration)))
+        }
+        "metadata" => {
+            let metadata = match data {
+                MpvDataType::HashMap(m) => Some(m),
+                MpvDataType::Null => None,
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainHashMap)),
+            };
+            Ok((id, Property::Metadata(metadata)))
+        }
+        // "playlist" => {
+        //     let playlist = match data {
+        //         MpvDataType::Array(a) => json_array_to_playlist(&a),
+        //         MpvDataType::Null => Vec::new(),
+        //         _ => return Err(Error(ErrorCode::ValueDoesNotContainPlaylist)),
+        //     };
+        //     Ok((id, Property::Playlist(playlist)))
+        // }
+        "playlist-pos" => {
+            let playlist_pos = match data {
+                MpvDataType::Usize(u) => Some(u),
+                MpvDataType::MinusOne => None,
+                MpvDataType::Null => None,
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainUsize)),
+            };
+            Ok((id, Property::PlaylistPos(playlist_pos)))
+        }
+        "loop-file" => {
+            let loop_file = match data {
+                MpvDataType::Usize(n) => LoopProperty::N(n),
+                MpvDataType::Bool(b) => match b {
+                    true => LoopProperty::Inf,
+                    false => LoopProperty::No,
+                },
+                MpvDataType::String(s) => match s.as_str() {
+                    "inf" => LoopProperty::Inf,
+                    "no" => LoopProperty::No,
+                    _ => return Err(Error(ErrorCode::ValueDoesNotContainString)),
+                },
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainString)),
+            };
+            Ok((id, Property::LoopFile(loop_file)))
+        }
+        "loop-playlist" => {
+            let loop_playlist = match data {
+                MpvDataType::Usize(n) => LoopProperty::N(n),
+                MpvDataType::Bool(b) => match b {
+                    true => LoopProperty::Inf,
+                    false => LoopProperty::No,
+                },
+                MpvDataType::String(s) => match s.as_str() {
+                    "inf" => LoopProperty::Inf,
+                    "no" => LoopProperty::No,
+                    _ => return Err(Error(ErrorCode::ValueDoesNotContainString)),
+                },
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainString)),
+            };
+            Ok((id, Property::LoopPlaylist(loop_playlist)))
+        }
+        "speed" => {
+            let speed = match data {
+                MpvDataType::Double(d) => d,
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainF64)),
+            };
+            Ok((id, Property::Speed(speed)))
+        }
+        "volume" => {
+            let volume = match data {
+                MpvDataType::Double(d) => d,
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainF64)),
+            };
+            Ok((id, Property::Volume(volume)))
+        }
+        "mute" => {
+            let mute = match data {
+                MpvDataType::Bool(b) => b,
+                _ => return Err(Error(ErrorCode::ValueDoesNotContainBool)),
+            };
+            Ok((id, Property::Mute(mute)))
+        }
+        // TODO: add missing cases
+        _ => Ok((id, Property::Unknown { name, data })),
+    }
+}

src/ipc.rs

@@ -51,9 +51,6 @@ impl MpvIpc {
     }
 
     pub(crate) async fn send_command(&mut self, command: &[Value]) -> Result<Option<Value>, Error> {
-        // let lock = self.socket_lock.lock().await;
-        // START CRITICAL SECTION
-
         let ipc_command = json!({ "command": command });
         let ipc_command_str = serde_json::to_string(&ipc_command)
             .map_err(|why| Error(ErrorCode::JsonParseError(why.to_string())))?;
@@ -87,8 +84,6 @@ impl MpvIpc {
                 break parsed_response;
             }
         };
-        // END CRITICAL SECTION
-        // mem::drop(lock);
 
         log::trace!("Received response: {:?}", response);
 

src/lib.rs

@@ -3,6 +3,7 @@
 mod core_api;
 mod error;
 mod event_parser;
+mod event_property_parser;
 mod highlevel_api_extension;
 mod ipc;
 mod message_parser;
@@ -10,4 +11,5 @@ mod message_parser;
 pub use core_api::*;
 pub use error::*;
 pub use event_parser::*;
+pub use event_property_parser::*;
 pub use highlevel_api_extension::*;

src/message_parser.rs

@@ -91,45 +91,36 @@ impl TypeHandler for Vec<PlaylistEntry> {
     }
 }
 
+pub(crate) fn json_to_value(value: &Value) -> Result<MpvDataType, Error> {
+    match value {
+        Value::Array(array) => Ok(MpvDataType::Array(json_array_to_vec(array))),
+        Value::Bool(b) => Ok(MpvDataType::Bool(*b)),
+        Value::Number(n) => {
+            if n.is_i64() && n.as_i64().unwrap() == -1 {
+                Ok(MpvDataType::MinusOne)
+            } else if n.is_u64() {
+                Ok(MpvDataType::Usize(n.as_u64().unwrap() as usize))
+            } else if n.is_f64() {
+                Ok(MpvDataType::Double(n.as_f64().unwrap()))
+            } else {
+                // TODO: proper error handling
+                panic!("Unexpected number type");
+            }
+        }
+        Value::Object(map) => Ok(MpvDataType::HashMap(json_map_to_hashmap(map))),
+        Value::String(s) => Ok(MpvDataType::String(s.to_string())),
+        Value::Null => Ok(MpvDataType::Null),
+    }
+}
+
 pub(crate) fn json_map_to_hashmap(
     map: &serde_json::map::Map<String, Value>,
 ) -> HashMap<String, MpvDataType> {
     let mut output_map: HashMap<String, MpvDataType> = HashMap::new();
     for (ref key, value) in map.iter() {
-        match *value {
-            Value::Array(ref array) => {
-                output_map.insert(
-                    key.to_string(),
-                    MpvDataType::Array(json_array_to_vec(array)),
-                );
-            }
-            Value::Bool(ref b) => {
-                output_map.insert(key.to_string(), MpvDataType::Bool(*b));
-            }
-            Value::Number(ref n) => {
-                if n.is_u64() {
-                    output_map.insert(
-                        key.to_string(),
-                        MpvDataType::Usize(n.as_u64().unwrap() as usize),
-                    );
-                } else if n.is_f64() {
-                    output_map.insert(key.to_string(), MpvDataType::Double(n.as_f64().unwrap()));
-                } else {
-                    panic!("unimplemented number");
-                }
-            }
-            Value::String(ref s) => {
-                output_map.insert(key.to_string(), MpvDataType::String(s.to_string()));
-            }
-            Value::Object(ref m) => {
-                output_map.insert(
-                    key.to_string(),
-                    MpvDataType::HashMap(json_map_to_hashmap(m)),
-                );
-            }
-            Value::Null => {
-                unimplemented!();
-            }
+        // TODO: proper error handling
+        if let Ok(value) = json_to_value(value) {
+            output_map.insert(key.to_string(), value);
         }
     }
     output_map
@@ -138,24 +129,8 @@ pub(crate) fn json_map_to_hashmap(
 pub(crate) fn json_array_to_vec(array: &[Value]) -> Vec<MpvDataType> {
     array
         .iter()
-        .map(|entry| match entry {
-            Value::Array(a) => MpvDataType::Array(json_array_to_vec(a)),
-            Value::Bool(b) => MpvDataType::Bool(*b),
-            Value::Number(n) => {
-                if n.is_u64() {
-                    MpvDataType::Usize(n.as_u64().unwrap() as usize)
-                } else if n.is_f64() {
-                    MpvDataType::Double(n.as_f64().unwrap())
-                } else {
-                    panic!("unimplemented number");
-                }
-            }
-            Value::Object(ref o) => MpvDataType::HashMap(json_map_to_hashmap(o)),
-            Value::String(s) => MpvDataType::String(s.to_owned()),
-            Value::Null => {
-                unimplemented!();
-            }
-        })
+        // TODO: proper error handling
+        .filter_map(|entry| json_to_value(entry).ok())
         .collect()
 }
 
@@ -198,6 +173,8 @@ mod test {
             "bool": true,
             "double": 1.0,
             "usize": 1,
+            "minus_one": -1,
+            "null": null,
             "string": "string",
             "object": {
                 "key": "value"
@@ -216,6 +193,8 @@ mod test {
         expected.insert("bool".to_string(), MpvDataType::Bool(true));
         expected.insert("double".to_string(), MpvDataType::Double(1.0));
         expected.insert("usize".to_string(), MpvDataType::Usize(1));
+        expected.insert("minus_one".to_string(), MpvDataType::MinusOne);
+        expected.insert("null".to_string(), MpvDataType::Null);
         expected.insert(
             "string".to_string(),
             MpvDataType::String("string".to_string()),
@@ -231,18 +210,6 @@ mod test {
         assert_eq!(json_map_to_hashmap(json.as_object().unwrap()), expected);
     }
 
-    #[test]
-    #[should_panic]
-    fn test_json_map_to_hashmap_fail_on_null() {
-        json_map_to_hashmap(
-            json!({
-                "null": null
-            })
-            .as_object()
-            .unwrap(),
-        );
-    }
-
     #[test]
     fn test_json_array_to_vec() {
         let json = json!([
@@ -250,6 +217,8 @@ mod test {
             true,
             1.0,
             1,
+            -1,
+            null,
             "string",
             {
                 "key": "value"
@@ -268,6 +237,8 @@ mod test {
             MpvDataType::Bool(true),
             MpvDataType::Double(1.0),
             MpvDataType::Usize(1),
+            MpvDataType::MinusOne,
+            MpvDataType::Null,
             MpvDataType::String("string".to_string()),
             MpvDataType::HashMap(HashMap::from([(
                 "key".to_string(),
@@ -278,12 +249,6 @@ mod test {
         assert_eq!(json_array_to_vec(json.as_array().unwrap()), expected);
     }
 
-    #[test]
-    #[should_panic]
-    fn test_json_array_to_vec_fail_on_null() {
-        json_array_to_vec(json!([null]).as_array().unwrap().as_slice());
-    }
-
     #[test]
     fn test_json_array_to_playlist() {
         let json = json!([

tests/events.rs

@@ -1,14 +1,12 @@
 use std::panic;
 
 use futures::{stream::StreamExt, SinkExt};
-use mpvipc::{Mpv, MpvDataType, MpvExt, Property};
+use mpvipc::{parse_event_property, Mpv, MpvDataType, MpvExt, Property};
 use serde_json::json;
 use test_log::test;
 use tokio::{net::UnixStream, task::JoinHandle};
 use tokio_util::codec::{Framed, LinesCodec, LinesCodecError};
 
-use mpvipc::Event;
-
 fn test_socket(
     answers: Vec<(bool, String)>,
 ) -> (UnixStream, JoinHandle<Result<(), LinesCodecError>>) {
@@ -53,19 +51,13 @@ async fn test_observe_event_successful() {
     tokio::spawn(async move {
         let event = mpv2.get_event_stream().await.next().await.unwrap().unwrap();
 
-        let property = match event {
-            Event::PropertyChange { id, property } => {
-                assert_eq!(id, 1);
-                property
-            }
-            err => panic!("{:?}", err),
-        };
-        let data = match property {
-            Property::Unknown { name, data } => {
+        let data = match parse_event_property(event) {
+            Ok((_, Property::Unknown { name, data })) => {
                 assert_eq!(name, "volume");
                 data
             }
-            err => panic!("{:?}", err),
+            Ok((_, property)) => panic!("{:?}", property),
+            Err(err) => panic!("{:?}", err),
         };
         match data {
             MpvDataType::Double(data) => assert_eq!(data, 64.0),

tests/integration.rs

@@ -73,24 +73,23 @@ async fn test_events() {
     let event_checking_thread = tokio::spawn(async move {
         loop {
             let event = events.next().await.unwrap().unwrap();
-            if let mpvipc::Event::PropertyChange { id, property } = event {
-                if id == 1337 {
+            if let (1337, property) = mpvipc::parse_event_property(event).unwrap() {
                 assert_eq!(property, mpvipc::Property::Pause(true));
                 break;
             }
         }
-        }
     });
 
     tokio::time::sleep(Duration::from_millis(10)).await;
 
     mpv.set_property("pause", true).await.unwrap();
 
-    if let Err(_) = tokio::time::timeout(
+    if tokio::time::timeout(
         tokio::time::Duration::from_millis(500),
         event_checking_thread,
     )
     .await
+    .is_err()
     {
         panic!("Event checking thread timed out");
     }