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121 lines
3.1 KiB
121 lines
3.1 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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"io"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"strconv"
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"github.com/cloudreve/Cloudreve/v4/pkg/filemanager/manager/entitysource"
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"github.com/cloudreve/Cloudreve/v4/pkg/logging"
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"github.com/cloudreve/Cloudreve/v4/pkg/setting"
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"github.com/cloudreve/Cloudreve/v4/pkg/util"
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"github.com/gofrs/uuid"
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)
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func NewVipsGenerator(l logging.Logger, settings setting.Provider) *VipsGenerator {
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return &VipsGenerator{l: l, settings: settings}
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}
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type VipsGenerator struct {
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l logging.Logger
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settings setting.Provider
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}
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func (v *VipsGenerator) Generate(ctx context.Context, es entitysource.EntitySource, ext string, previous *Result) (*Result, error) {
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if !util.IsInExtensionListExt(v.settings.VipsThumbExts(ctx), ext) {
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return nil, fmt.Errorf("unsupported video format: %w", ErrPassThrough)
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}
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if es.Entity().Size() > v.settings.VipsThumbMaxSize(ctx) {
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return nil, fmt.Errorf("file is too big: %w", ErrPassThrough)
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}
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outputOpt := ".png"
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encode := v.settings.ThumbEncode(ctx)
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if encode.Format == "jpg" {
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outputOpt = fmt.Sprintf(".jpg[Q=%d]", encode.Quality)
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}
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input := "[descriptor=0]"
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usePipe := true
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if runtime.GOOS == "windows" {
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// Pipe IO is not working on Windows for VIPS
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if es.IsLocal() {
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// escape [ and ] in file name
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input = fmt.Sprintf("[filename=\"%s\"]", es.LocalPath(ctx))
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usePipe = false
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} else {
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usePipe = false
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// If not local policy files, download to temp folder
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tempPath := filepath.Join(
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util.DataPath(v.settings.TempPath(ctx)),
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"thumb",
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fmt.Sprintf("vips_%s.%s", uuid.Must(uuid.NewV4()).String(), ext),
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)
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input = fmt.Sprintf("[filename=\"%s\"]", tempPath)
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// Due to limitations of ffmpeg, we need to write the input file to disk first
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tempInputFile, err := util.CreatNestedFile(tempPath)
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if err != nil {
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return nil, fmt.Errorf("failed to create temp file: %w", err)
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}
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defer os.Remove(tempPath)
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defer tempInputFile.Close()
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if _, err = io.Copy(tempInputFile, es); err != nil {
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return &Result{Path: tempPath}, fmt.Errorf("failed to write input file: %w", err)
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}
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tempInputFile.Close()
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}
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}
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w, h := v.settings.ThumbSize(ctx)
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cmd := exec.CommandContext(ctx,
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v.settings.VipsPath(ctx), "thumbnail_source", input, outputOpt, strconv.Itoa(w),
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"--height", strconv.Itoa(h))
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tempPath := filepath.Join(
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util.DataPath(v.settings.TempPath(ctx)),
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thumbTempFolder,
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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 nil, 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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if usePipe {
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cmd.Stdin = es
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}
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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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v.l.Warning("Failed to invoke vips: %s", vipsErr.String())
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return &Result{Path: tempPath}, fmt.Errorf("failed to invoke vips: %w, raw output: %s", err, vipsErr.String())
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}
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return &Result{Path: 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) Enabled(ctx context.Context) bool {
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return v.settings.VipsThumbGeneratorEnabled(ctx)
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}
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