Diffstat (limited to 'internal/processor/webp.go')
| -rw-r--r-- | internal/processor/webp.go | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/internal/processor/webp.go b/internal/processor/webp.go deleted file mode 100644 index 984aab1..0000000 --- a/internal/processor/webp.go +++ /dev/null @@ -1,81 +0,0 @@ -package processor - -import ( - "fmt" - "image" - "image/jpeg" - "image/png" - "io" - "strings" - - "golang.org/x/image/draw" - - "github.com/SayaAndy/saya-today-thumbnail-generator/config" - "github.com/kolesa-team/go-webp/encoder" - "github.com/kolesa-team/go-webp/webp" -) - -var _ Processor = (*WebpProcessor)(nil) - -type WebpProcessor struct { - maxWidth int - maxHeight int - quality int -} - -func NewWebpProcessor(cfg *config.ProcessorConfig) (*WebpProcessor, error) { - if cfg.Type != "webp" { - return nil, fmt.Errorf("invalid storage type for WebpProcessor") - } - webpCfg := cfg.Config.(*config.WebpConfig) - - return &WebpProcessor{webpCfg.Size.MaxWidth, webpCfg.Size.MaxHeight, webpCfg.Quality}, nil -} - -func (p *WebpProcessor) DeductOutputPath(inputPath string) string { - pathParts := strings.Split(inputPath, ".") - if len(pathParts) < 2 { - return inputPath + ".webp" - } - pathParts[len(pathParts)-1] = "webp" - return strings.Join(pathParts, ".") -} - -func (p *WebpProcessor) Process(contentType string, reader io.Reader, writer io.Writer) error { - var src image.Image - var err error - - switch contentType { - case "image/jpeg": - src, err = jpeg.Decode(reader) - if err != nil { - return fmt.Errorf("decode jpeg: %w", err) - } - case "image/png": - src, err = png.Decode(reader) - if err != nil { - return fmt.Errorf("decode png: %w", err) - } - } - - opts, err := encoder.NewLossyEncoderOptions(encoder.PresetDefault, float32(p.quality)) - if err != nil { - return fmt.Errorf("create webp encoder options: %w", err) - } - - xCoef := p.maxWidth / src.Bounds().Max.X - yCoef := p.maxHeight / src.Bounds().Max.Y - if xCoef > 1 && yCoef > 1 { - return webp.Encode(writer, src, opts) - } - - minCoef := xCoef - if yCoef < minCoef { - minCoef = yCoef - } - - dst := image.NewRGBA(image.Rect(0, 0, src.Bounds().Max.X*xCoef, src.Bounds().Max.Y*xCoef)) - draw.CatmullRom.Scale(dst, dst.Rect, src, src.Bounds(), draw.Over, nil) - - return webp.Encode(writer, dst, opts) -} |