94 lines
2.9 KiB
Go
94 lines
2.9 KiB
Go
package helper
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
|
|
"github.com/google/uuid"
|
|
)
|
|
|
|
func ConvertImageToSticker(imgData []byte, exifPath string) ([]byte, error) {
|
|
webpPath := filepath.Join("temp", fmt.Sprintf("%s.webp", uuid.New().String()))
|
|
defer os.Remove(webpPath)
|
|
|
|
convertCmd := exec.Command("convert", "-", "-resize", "512x512", "-background", "none", "-compose", "Copy", "-gravity", "center", "-extent", "512x512", "-quality", "100", "png:-")
|
|
convertCmd.Stdin = bytes.NewReader(imgData)
|
|
var convertBuf bytes.Buffer
|
|
convertCmd.Stdout = &convertBuf
|
|
if err := convertCmd.Run(); err != nil {
|
|
return nil, fmt.Errorf("convert failed: %w", err)
|
|
}
|
|
|
|
cwebpCmd := exec.Command("cwebp", "-quiet", "-mt", "-exact", "-q", "100", "-m", "6", "-alpha_q", "100", "-o", "-", "--", "-")
|
|
cwebpCmd.Stdin = &convertBuf
|
|
var cwebpBuf bytes.Buffer
|
|
cwebpCmd.Stdout = &cwebpBuf
|
|
if err := cwebpCmd.Run(); err != nil {
|
|
return nil, fmt.Errorf("cwebp failed: %w", err)
|
|
}
|
|
|
|
tmpWebp := webpPath + ".tmp.webp"
|
|
if err := os.WriteFile(tmpWebp, cwebpBuf.Bytes(), 0644); err != nil {
|
|
return nil, err
|
|
}
|
|
defer os.Remove(tmpWebp)
|
|
|
|
webpmuxCmd := exec.Command("webpmux", "-set", "exif", exifPath, tmpWebp, "-o", webpPath)
|
|
if err := webpmuxCmd.Run(); err != nil {
|
|
return nil, fmt.Errorf("webpmux failed: %w", err)
|
|
}
|
|
|
|
return os.ReadFile(webpPath)
|
|
}
|
|
|
|
func ConvertVideoToSticker(vidData []byte, exifPath string) ([]byte, error) {
|
|
webpPath := filepath.Join("temp", fmt.Sprintf("%s.webp", uuid.New().String()))
|
|
defer os.Remove(webpPath)
|
|
|
|
tmpWebp := webpPath + ".tmp.webp"
|
|
defer os.Remove(tmpWebp)
|
|
|
|
ffmpegCmd := exec.Command("ffmpeg",
|
|
"-y", "-hide_banner", "-loglevel", "error",
|
|
"-i", "pipe:0", "-f", "mp4",
|
|
"-ss", "00:00:00", "-t", "00:00:15",
|
|
"-vf", "fps=10,scale=720:-1:flags=lanczos:force_original_aspect_ratio=increase,crop=512:512,pad=512:512:(ow-iw)/2:(oh-ih)/2:color=#00000000,setsar=1",
|
|
"-compression_level", "6",
|
|
"-q:v", "60", "-loop", "0",
|
|
"-preset", "picture", "-an", "-fps_mode", "auto",
|
|
"-f", "webp", tmpWebp,
|
|
)
|
|
ffmpegCmd.Stdin = bytes.NewReader(vidData)
|
|
if err := ffmpegCmd.Run(); err != nil {
|
|
return nil, fmt.Errorf("ffmpeg failed: %w", err)
|
|
}
|
|
|
|
webpmuxCmd := exec.Command("webpmux", "-set", "exif", exifPath, tmpWebp, "-o", webpPath)
|
|
if err := webpmuxCmd.Run(); err != nil {
|
|
return nil, fmt.Errorf("webpmux failed: %w", err)
|
|
}
|
|
|
|
return os.ReadFile(webpPath)
|
|
}
|
|
|
|
func RewriteStickerExif(webpData []byte, exifPath string) ([]byte, error) {
|
|
webpPath := filepath.Join("temp", fmt.Sprintf("%s.webp", uuid.New().String()))
|
|
defer os.Remove(webpPath)
|
|
|
|
tmpWebp := webpPath + ".tmp.webp"
|
|
if err := os.WriteFile(tmpWebp, webpData, 0644); err != nil {
|
|
return nil, err
|
|
}
|
|
defer os.Remove(tmpWebp)
|
|
|
|
webpmuxCmd := exec.Command("webpmux", "-set", "exif", exifPath, tmpWebp, "-o", webpPath)
|
|
if err := webpmuxCmd.Run(); err != nil {
|
|
return nil, fmt.Errorf("webpmux failed: %w", err)
|
|
}
|
|
|
|
return os.ReadFile(webpPath)
|
|
}
|