whisper.cpp/bindings/go/pkg/whisper/model.go

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package whisper
import (
"fmt"
"os"
"runtime"
// Bindings
whisper "github.com/ggerganov/whisper.cpp/bindings/go"
)
///////////////////////////////////////////////////////////////////////////////
// TYPES
type model struct {
path string
ctx *whisper.Context
}
// Make sure model adheres to the interface
var _ Model = (*model)(nil)
///////////////////////////////////////////////////////////////////////////////
// LIFECYCLE
func New(path string) (Model, error) {
model := new(model)
if _, err := os.Stat(path); err != nil {
return nil, err
} else if ctx := whisper.Whisper_init(path); ctx == nil {
return nil, ErrUnableToLoadModel
} else {
model.ctx = ctx
model.path = path
}
// Return success
return model, nil
}
func (model *model) Close() error {
if model.ctx != nil {
model.ctx.Whisper_free()
}
// Release resources
model.ctx = nil
// Return success
return nil
}
///////////////////////////////////////////////////////////////////////////////
// STRINGIFY
func (model *model) String() string {
str := "<whisper.model"
if model.ctx != nil {
str += fmt.Sprintf(" model=%q", model.path)
}
return str + ">"
}
///////////////////////////////////////////////////////////////////////////////
// PUBLIC METHODS
// Return true if model is multilingual (language and translation options are supported)
func (model *model) IsMultilingual() bool {
return model.ctx.Whisper_is_multilingual() != 0
}
// Return all recognized languages. Initially it is set to auto-detect
func (model *model) Languages() []string {
result := make([]string, 0, whisper.Whisper_lang_max_id())
for i := 0; i < whisper.Whisper_lang_max_id(); i++ {
str := whisper.Whisper_lang_str(i)
if model.ctx.Whisper_lang_id(str) >= 0 {
result = append(result, str)
}
}
return result
}
func (model *model) NewContext() (Context, error) {
if model.ctx == nil {
return nil, ErrInternalAppError
}
// Create new context
params := model.ctx.Whisper_full_default_params(whisper.SAMPLING_GREEDY)
params.SetTranslate(false)
params.SetPrintSpecial(false)
params.SetPrintProgress(false)
params.SetPrintRealtime(false)
params.SetPrintTimestamps(false)
params.SetThreads(runtime.NumCPU())
params.SetNoContext(true)
// Return new context
return newContext(model, params)
}