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package fileop
import (
"image"
"image/jpeg"
"os"
"os/exec"
"github.com/disintegration/imaging"
)
func EncodeImageThumbnail(inputPath string, outputPath string, width, height int) error {
inputImage, err := imaging.Open(inputPath, imaging.AutoOrientation(true))
if err != nil {
return err
}
thumbImage := imaging.Fit(inputImage, width, height, imaging.Lanczos)
if err = encodeImageJPEG(thumbImage, outputPath, 60); err != nil {
return err
}
return nil
}
func encodeImageJPEG(image image.Image, outputPath string, jpegQuality int) error {
photo_file, err := os.Create(outputPath)
if err != nil {
return err
}
defer photo_file.Close()
err = jpeg.Encode(photo_file, image, &jpeg.Options{Quality: jpegQuality})
if err != nil {
return err
}
return nil
}
func EncodeVideoThumbnail(inputPath string, outputPath string, width, height int) error {
args := []string{
"-i",
inputPath,
"-vframes", "1", // output one frame
"-an", // disable audio
"-vf", "scale='min(1024,iw)':'min(1024,ih)':force_original_aspect_ratio=decrease:force_divisible_by=2",
"-vf", "select=gte(n\\,100)",
outputPath,
}
cmd := exec.Command("ffmpeg", args...)
if err := cmd.Run(); err != nil {
return err
}
return nil
}
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