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mpvipc
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milarin 2023-12-20 20:50:11 +01:00
commit 6cd31fc715
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2
.gitignore vendored Normal file
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.env
*_test.go

26
chapter.go Normal file
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package mpvipc
import (
"encoding/json"
"time"
)
type Chapter struct {
Title string `json:"title"`
Time time.Duration `json:"time"`
}
func (c *Chapter) UnmarshalJSON(data []byte) error {
m := &struct {
Title string `json:"title"`
Time float64 `json:"time"`
}{}
if err := json.Unmarshal(data, m); err != nil {
return err
}
c.Title = m.Title
c.Time = time.Duration(m.Time * float64(time.Second))
return nil
}

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go.mod Normal file
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module git.milar.in/milarin/mpvipc
go 1.21.5
require git.milar.in/milarin/channel v0.1.1

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go.sum Normal file
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git.milar.in/milarin/channel v0.1.1 h1:s8+BdiOMmuRUDmChQ2i4G5GWsDCK9tKNHt1knLJx9zM=
git.milar.in/milarin/channel v0.1.1/go.mod h1:We83LTI8S7u7II3pD+A2ChCDWJfCkcBUCUqii9HjTtM=

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props_get.go Normal file
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package mpvipc
import "time"
// list of (almost) all properties can be found in official docs:
// https://mpv.io/manual/master/#properties
func IsFullscreen(socket string) (bool, error) {
return GetProperty[bool](socket, "fullscreen")
}
func IsPaused(socket string) (bool, error) {
return GetProperty[bool](socket, "pause")
}
func GetFilename(socket string) (string, error) {
return GetProperty[string](socket, "filename")
}
func GetEstimatedFrameCount(socket string) (int, error) {
return GetProperty[int](socket, "estimated-frame-count")
}
func GetEstimatedFrameNumber(socket string) (int, error) {
return GetProperty[int](socket, "estimated-frame-number")
}
func GetPID(socket string) (int, error) {
return GetProperty[int](socket, "pid")
}
func GetPath(socket string) (string, error) {
return GetProperty[string](socket, "path")
}
func GetMediaTitle(socket string) (string, error) {
return GetProperty[string](socket, "media-title")
}
func GetFileFormat(socket string) (string, error) {
return GetProperty[string](socket, "file-format")
}
func GetDuration(socket string) (time.Duration, error) {
durationInSeconds, err := GetProperty[float64](socket, "duration")
if err != nil {
return 0, err
}
return time.Duration(durationInSeconds * float64(time.Second)), nil
}
func GetPercentPos(socket string) (float64, error) {
return GetProperty[float64](socket, "percent-pos")
}
func GetTimePos(socket string) (time.Duration, error) {
durationInSeconds, err := GetProperty[float64](socket, "time-pos")
if err != nil {
return 0, err
}
return time.Duration(durationInSeconds * float64(time.Second)), nil
}
func GetTimeRemaining(socket string) (time.Duration, error) {
durationInSeconds, err := GetProperty[float64](socket, "time-remaining")
if err != nil {
return 0, err
}
return time.Duration(durationInSeconds * float64(time.Second)), nil
}
func IsSeeking(socket string) (bool, error) {
return GetProperty[bool](socket, "seeking")
}
func GetVideoFormat(socket string) (string, error) {
return GetProperty[string](socket, "video-format")
}
func GetVideoSize(socket string) (int, int, error) {
width, err := GetProperty[int](socket, "width")
if err != nil {
return 0, 0, err
}
height, err := GetProperty[int](socket, "height")
if err != nil {
return 0, 0, err
}
return width, height, nil
}
func GetVideoDisplaySize(socket string) (int, int, error) {
width, err := GetProperty[int](socket, "dwidth")
if err != nil {
return 0, 0, err
}
height, err := GetProperty[int](socket, "dheight")
if err != nil {
return 0, 0, err
}
return width, height, nil
}
func GetWindowID(socket string) (int64, error) {
return GetProperty[int64](socket, "window-id")
}
func GetChapterList(socket string) ([]Chapter, error) {
return GetProperty[[]Chapter](socket, "chapter-list")
}
func IsSeekable(socket string) (bool, error) {
return GetProperty[bool](socket, "seekable")
}
func IsPartiallySeekable(socket string) (bool, error) {
return GetProperty[bool](socket, "partially-seekable")
}
func IsPlaybackAborted(socket string) (bool, error) {
return GetProperty[bool](socket, "playback-abort")
}
func GetPropertyList(socket string) ([]string, error) {
return GetProperty[[]string](socket, "property-list")
}

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props_observe.go Normal file
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package mpvipc
import (
"context"
"time"
"git.milar.in/milarin/channel"
)
func ObserveFullscreen(ctx context.Context, socket string) (<-chan bool, error) {
return ObserveProperty[bool](ctx, socket, "fullscreen")
}
func ObservePaused(ctx context.Context, socket string) (<-chan bool, error) {
return ObserveProperty[bool](ctx, socket, "pause")
}
func ObserveFilename(ctx context.Context, socket string) (<-chan string, error) {
return ObserveProperty[string](ctx, socket, "filename")
}
func ObservePath(ctx context.Context, socket string) (<-chan string, error) {
return ObserveProperty[string](ctx, socket, "path")
}
func ObserveMediaTitle(ctx context.Context, socket string) (<-chan string, error) {
return ObserveProperty[string](ctx, socket, "media-title")
}
func ObserveFileFormat(ctx context.Context, socket string) (<-chan string, error) {
return ObserveProperty[string](ctx, socket, "file-format")
}
func ObserveDuration(ctx context.Context, socket string) (<-chan time.Duration, error) {
out, err := ObserveProperty[float64](ctx, socket, "duration")
if err != nil {
return nil, err
}
return channel.MapSuccessive(out, func(v float64) time.Duration {
return time.Duration(v * float64(time.Second))
}), nil
}
func ObservePercentPos(ctx context.Context, socket string) (<-chan float64, error) {
return ObserveProperty[float64](ctx, socket, "percent-pos")
}
func ObserveTimePos(ctx context.Context, socket string) (<-chan time.Duration, error) {
out, err := ObserveProperty[float64](ctx, socket, "time-pos")
if err != nil {
return nil, err
}
return channel.MapSuccessive(out, func(v float64) time.Duration {
return time.Duration(v * float64(time.Second))
}), nil
}
func ObserveTimeRemaining(ctx context.Context, socket string) (<-chan time.Duration, error) {
out, err := ObserveProperty[float64](ctx, socket, "time-remaining")
if err != nil {
return nil, err
}
return channel.MapSuccessive(out, func(v float64) time.Duration {
return time.Duration(v * float64(time.Second))
}), nil
}
func ObserveVideoFormat(ctx context.Context, socket string) (<-chan string, error) {
return ObserveProperty[string](ctx, socket, "video-format")
}
func ObservePlaybackAborted(ctx context.Context, socket string) (<-chan bool, error) {
return ObserveProperty[bool](ctx, socket, "playback-abort")
}

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props_set.go Normal file
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package mpvipc
import "time"
func SetFullscreen(socket string, fullscreen bool) error {
return SetProperty[bool](socket, "fullscreen", fullscreen)
}
func SetPause(socket string, pause bool) error {
return SetProperty[bool](socket, "pause", pause)
}
func SetTimePos(socket string, timePos time.Duration) error {
return SetProperty[float64](socket, "time-pos", float64(timePos)/float64(time.Second))
}
func SetPercentPos(socket string, percentPos float64) error {
return SetProperty[float64](socket, "percent-pos", percentPos)
}

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send_command.go Normal file
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package mpvipc
import (
"context"
"encoding/json"
"errors"
"net"
)
type Command struct {
Command []interface{} `json:"command"`
}
type Response[T any] struct {
Data T `json:"data"`
RequestID int `json:"request_id"`
Error string `json:"error"`
}
type Event[T any] struct {
Data T `json:"data"`
ID int `json:"id"`
Name string `json:"name"`
Error string `json:"error"`
}
func SendCommand[T any](socket string, cmd *Command) (*Response[T], error) {
conn, err := net.Dial("unix", socket)
if err != nil {
return nil, err
}
defer conn.Close()
if err := json.NewEncoder(conn).Encode(cmd); err != nil {
return nil, err
}
resp := &Response[T]{}
if err := json.NewDecoder(conn).Decode(resp); err != nil {
return nil, err
}
return resp, nil
}
func GetProperty[T any](socket string, propertyName string) (T, error) {
cmd := &Command{[]interface{}{"get_property", propertyName}}
resp, err := SendCommand[T](socket, cmd)
if err != nil {
return *new(T), err
}
if resp.Error != "success" {
return *new(T), errors.New(resp.Error)
}
return resp.Data, nil
}
func SetProperty[T any](socket string, propertyName string, propertyValue T) error {
cmd := &Command{[]interface{}{"set_property", propertyName, propertyValue}}
resp, err := SendCommand[T](socket, cmd)
if err != nil {
return err
}
if resp.Error != "success" {
return errors.New(resp.Error)
}
return nil
}
func ObserveProperty[T any](ctx context.Context, socket string, propertyName string) (<-chan T, error) {
out := make(chan T, 10)
conn, err := net.Dial("unix", socket)
if err != nil {
return nil, err
}
enc := json.NewEncoder(conn)
dec := json.NewDecoder(conn)
cmd := &Command{[]interface{}{"observe_property", 1, propertyName}}
if err := enc.Encode(cmd); err != nil {
conn.Close()
return nil, err
}
resp := &Response[T]{}
if err := json.NewDecoder(conn).Decode(resp); err != nil {
conn.Close()
return nil, err
}
if resp.Error != "success" {
conn.Close()
return nil, errors.New(resp.Error)
}
go func() {
defer conn.Close()
defer enc.Encode(&Command{[]interface{}{"unobserve_property", 0}})
<-ctx.Done()
}()
go func() {
defer close(out)
for ctx.Err() == nil {
event := Event[T]{}
if err := dec.Decode(&event); err != nil {
break
}
out <- event.Data
}
}()
return out, nil
}