gui-for-ffmpeg/encoder/encoder.go

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package encoder
import "errors"
type EncoderContract interface {
GetName() string
GetParams() []string
GetParameter(name string) (ParameterContract, error)
}
type ParameterContract interface {
GetName() string
Set(string) error
Get() string
IsEnabled() bool
SetEnable()
SetDisable()
}
type EncoderDataContract interface {
GetTitle() string
GetFormats() []string
GetFileType() FileTypeContract
NewEncoder() EncoderContract
}
type Data struct {
title string
formats []string
fileType FileTypeContract
encoder func() EncoderContract
}
func NewData(title string, formats []string, fileType FileTypeContract, encoder func() EncoderContract) *Data {
return &Data{
title: title,
formats: formats,
fileType: fileType,
encoder: encoder,
}
}
func (data Data) GetTitle() string {
return data.title
}
func (data Data) GetFormats() []string {
return data.formats
}
func (data Data) NewEncoder() EncoderContract {
return data.encoder()
}
func (data Data) GetFileType() FileTypeContract {
return data.fileType
}
type FileTypeContract interface {
Name() string
Ordinal() int
}
const (
Video = iota
Audio
Image
)
type FileType uint
var fileTypeStrings = []string{
"video",
"audio",
"image",
}
func (fileType FileType) Name() string {
return fileTypeStrings[fileType]
}
func (fileType FileType) Ordinal() int {
return int(fileType)
}
func GetListFileType() []FileTypeContract {
return []FileTypeContract{
FileType(Video),
FileType(Audio),
FileType(Image),
}
}
type Encoder struct {
name string
parameters map[string]ParameterContract
getParams func(parameters map[string]ParameterContract) []string
}
func NewEncoder(name string, parameters map[string]ParameterContract, getParams func(parameters map[string]ParameterContract) []string) *Encoder {
return &Encoder{
name: name,
parameters: parameters,
getParams: getParams,
}
}
func (e *Encoder) GetName() string {
return e.name
}
func (e *Encoder) GetParams() []string {
return e.getParams(e.parameters)
}
func (e *Encoder) GetParameter(name string) (ParameterContract, error) {
if e.parameters[name] == nil {
return nil, errors.New("parameter not found")
}
return e.parameters[name], nil
}
type Parameter struct {
name string
isEnabled bool
parameter string
setParameter func(string) (string, error)
}
func NewParameter(name string, isEnabled bool, defaultParameter string, setParameter func(string) (string, error)) *Parameter {
return &Parameter{
name: name,
isEnabled: isEnabled,
parameter: defaultParameter,
setParameter: setParameter,
}
}
func (p *Parameter) GetName() string {
return p.name
}
func (p *Parameter) Set(s string) (err error) {
if p.setParameter != nil {
s, err = p.setParameter(s)
if err != nil {
return err
}
}
p.parameter = s
return nil
}
func (p *Parameter) Get() string {
return p.parameter
}
func (p *Parameter) IsEnabled() bool {
return p.isEnabled
}
func (p *Parameter) SetEnable() {
p.isEnabled = true
}
func (p *Parameter) SetDisable() {
p.isEnabled = false
}