309 lines
9.9 KiB
Rust
309 lines
9.9 KiB
Rust
//! JSON parsing logic for events from [`MpvIpc`](crate::ipc::MpvIpc).
|
|
|
|
use std::str::FromStr;
|
|
|
|
use serde::{Deserialize, Serialize};
|
|
use serde_json::{Map, Value};
|
|
|
|
use crate::{ipc::MpvIpcEvent, message_parser::json_to_value, MpvDataType, MpvError};
|
|
|
|
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
|
|
#[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.
|
|
///
|
|
/// Not all event types are guaranteed to be implemented.
|
|
/// If something is missing, please open an issue.
|
|
///
|
|
/// Otherwise, the event will be returned as an `Event::Unimplemented` variant.
|
|
///
|
|
/// 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 {
|
|
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,
|
|
Seek,
|
|
PlaybackRestart,
|
|
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: Option<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,
|
|
|
|
/// Deprecated since mpv v0.7.0, removed in mpv v0.35.0
|
|
ScriptInputDispatch,
|
|
|
|
/// Catch-all for unimplemented events
|
|
Unimplemented(Map<String, Value>),
|
|
}
|
|
|
|
macro_rules! get_key_as {
|
|
($as_type:ident, $key:expr, $event:ident) => {{
|
|
let tmp = $event.get($key).ok_or(MpvError::MissingKeyInObject {
|
|
key: $key.to_owned(),
|
|
map: $event.clone(),
|
|
})?;
|
|
|
|
tmp.$as_type()
|
|
.ok_or(MpvError::ValueContainsUnexpectedType {
|
|
expected_type: stringify!($as_type).strip_prefix("as_").unwrap().to_owned(),
|
|
received: tmp.clone(),
|
|
})?
|
|
}};
|
|
}
|
|
|
|
macro_rules! get_optional_key_as {
|
|
($as_type:ident, $key:expr, $event:ident) => {{
|
|
if let Some(tmp) = $event.get($key) {
|
|
Some(
|
|
tmp.$as_type()
|
|
.ok_or(MpvError::ValueContainsUnexpectedType {
|
|
expected_type: stringify!($as_type).strip_prefix("as_").unwrap().to_owned(),
|
|
received: tmp.clone(),
|
|
})?,
|
|
)
|
|
} else {
|
|
None
|
|
}
|
|
}};
|
|
}
|
|
|
|
// 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.
|
|
pub(crate) fn parse_event(raw_event: MpvIpcEvent) -> Result<Event, MpvError> {
|
|
let MpvIpcEvent(event) = raw_event;
|
|
|
|
event
|
|
.as_object()
|
|
.ok_or(MpvError::ValueContainsUnexpectedType {
|
|
expected_type: "object".to_owned(),
|
|
received: event.clone(),
|
|
})
|
|
.and_then(|event| {
|
|
let event_name = get_key_as!(as_str, "event", event);
|
|
|
|
match event_name {
|
|
"start-file" => parse_start_file(event),
|
|
"end-file" => parse_end_file(event),
|
|
"file-loaded" => Ok(Event::FileLoaded),
|
|
"seek" => Ok(Event::Seek),
|
|
"playback-restart" => Ok(Event::PlaybackRestart),
|
|
"shutdown" => Ok(Event::Shutdown),
|
|
"log-message" => parse_log_message(event),
|
|
"hook" => parse_hook(event),
|
|
|
|
// TODO: fix these. They are asynchronous responses to different requests.
|
|
// see:
|
|
// - https://github.com/mpv-player/mpv/blob/5f768a688b706cf94041adf5bed7c7004af2ec5a/libmpv/client.h#L1158-L1160
|
|
// - https://github.com/mpv-player/mpv/blob/5f768a688b706cf94041adf5bed7c7004af2ec5a/libmpv/client.h#L1095-L1098
|
|
// - https://github.com/mpv-player/mpv/blob/5f768a688b706cf94041adf5bed7c7004af2ec5a/libmpv/client.h#L972-L982
|
|
// "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),
|
|
_ => Ok(Event::Unimplemented(event.to_owned())),
|
|
}
|
|
})
|
|
}
|
|
|
|
fn parse_start_file(event: &Map<String, Value>) -> Result<Event, MpvError> {
|
|
let playlist_entry_id = get_key_as!(as_u64, "playlist_entry_id", event) as usize;
|
|
|
|
Ok(Event::StartFile { playlist_entry_id })
|
|
}
|
|
|
|
fn parse_end_file(event: &Map<String, Value>) -> Result<Event, MpvError> {
|
|
let reason = get_key_as!(as_str, "reason", event);
|
|
let playlist_entry_id = get_key_as!(as_u64, "playlist_entry_id", event) as usize;
|
|
let file_error = get_optional_key_as!(as_str, "file_error", event).map(|s| s.to_string());
|
|
let playlist_insert_id =
|
|
get_optional_key_as!(as_u64, "playlist_insert_id", event).map(|i| i as usize);
|
|
let playlist_insert_num_entries =
|
|
get_optional_key_as!(as_u64, "playlist_insert_num_entries", event).map(|i| i 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, MpvError> {
|
|
let prefix = get_key_as!(as_str, "prefix", event).to_owned();
|
|
let level = get_key_as!(as_str, "level", event);
|
|
let text = get_key_as!(as_str, "text", event).to_owned();
|
|
|
|
Ok(Event::LogMessage {
|
|
prefix,
|
|
level: level
|
|
.parse()
|
|
.unwrap_or(EventLogMessageLevel::Unimplemented(level.to_string())),
|
|
text,
|
|
})
|
|
}
|
|
|
|
fn parse_hook(event: &Map<String, Value>) -> Result<Event, MpvError> {
|
|
let hook_id = get_key_as!(as_u64, "hook_id", event) as usize;
|
|
Ok(Event::Hook { hook_id })
|
|
}
|
|
|
|
fn parse_client_message(event: &Map<String, Value>) -> Result<Event, MpvError> {
|
|
let args = get_key_as!(as_array, "args", event)
|
|
.iter()
|
|
.map(|arg| {
|
|
arg.as_str()
|
|
.ok_or(MpvError::ValueContainsUnexpectedType {
|
|
expected_type: "string".to_owned(),
|
|
received: arg.clone(),
|
|
})
|
|
.map(|s| s.to_string())
|
|
})
|
|
.collect::<Result<Vec<String>, MpvError>>()?;
|
|
Ok(Event::ClientMessage { args })
|
|
}
|
|
|
|
fn parse_property_change(event: &Map<String, Value>) -> Result<Event, MpvError> {
|
|
let id = get_key_as!(as_u64, "id", event) as usize;
|
|
let property_name = get_key_as!(as_str, "name", event);
|
|
let data = event.get("data").map(json_to_value).transpose()?;
|
|
|
|
Ok(Event::PropertyChange {
|
|
id,
|
|
name: property_name.to_string(),
|
|
data,
|
|
})
|
|
}
|