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79 lines
1.9 KiB
79 lines
1.9 KiB
package thumb
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import (
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"bytes"
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"context"
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"fmt"
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model "github.com/cloudreve/Cloudreve/v3/models"
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"github.com/cloudreve/Cloudreve/v3/pkg/util"
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"github.com/gofrs/uuid"
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"io"
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"os/exec"
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"path/filepath"
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"strings"
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)
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func init() {
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RegisterGenerator(&VipsGenerator{})
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}
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type VipsGenerator struct {
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exts []string
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lastRawExts string
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}
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func (v VipsGenerator) Generate(ctx context.Context, file io.Reader, name string, options map[string]string) (string, error) {
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vipsOpts := model.GetSettingByNames("thumb_vips_path", "thumb_vips_exts", "thumb_encode_quality", "thumb_encode_method", "temp_path")
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if v.lastRawExts != vipsOpts["thumb_vips_exts"] {
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v.exts = strings.Split(vipsOpts["thumb_vips_exts"], ",")
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}
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if !util.IsInExtensionList(v.exts, name) {
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return "", fmt.Errorf("unsupported image format: %w", ErrPassThrough)
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}
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outputOpt := ".png"
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if vipsOpts["thumb_encode_method"] == "jpg" {
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outputOpt = fmt.Sprintf(".jpg[Q=%s]", vipsOpts["thumb_encode_quality"])
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}
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cmd := exec.CommandContext(ctx,
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vipsOpts["thumb_vips_path"], "thumbnail_source", "[descriptor=0]", outputOpt, options["thumb_width"],
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"--height", options["thumb_height"])
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tempPath := filepath.Join(
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util.RelativePath(vipsOpts["temp_path"]),
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"thumb",
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fmt.Sprintf("thumb_%s", uuid.Must(uuid.NewV4()).String()),
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)
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thumbFile, err := util.CreatNestedFile(tempPath)
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if err != nil {
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return "", fmt.Errorf("failed to create temp file: %w", err)
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}
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defer thumbFile.Close()
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// Redirect IO
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var vipsErr bytes.Buffer
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cmd.Stdin = file
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cmd.Stdout = thumbFile
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cmd.Stderr = &vipsErr
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if err := cmd.Run(); err != nil {
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util.Log().Warning("Failed to invoke vips: %s", vipsErr.String())
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return "", fmt.Errorf("failed to invoke vips: %w", err)
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}
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return tempPath, nil
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}
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func (v VipsGenerator) Priority() int {
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return 100
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}
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func (v VipsGenerator) EnableFlag() string {
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return "thumb_vips_enabled"
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}
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