Fix path to ffmpeg and ffprobe.

Added the ability to select the path to ffmpeg and ffprobe.

src/convertor/service.go

@@ -11,11 +11,19 @@ import (
 type ServiceContract interface {
 	RunConvert(setting ConvertSetting) error
 	GetTotalDuration(file *File) (float64, error)
+	GetFFmpegVesrion() (string, error)
+	GetFFprobeVersion() (string, error)
+	ChangeFFmpegPath(path string) (bool, error)
+	ChangeFFprobePath(path string) (bool, error)
+}
+
+type FFPathUtilities struct {
+	FFmpeg  string
+	FFprobe string
 }
 
 type Service struct {
-	pathFFmpeg  string
-	pathFFprobe string
+	ffPathUtilities *FFPathUtilities
 }
 
 type File struct {
@@ -33,10 +41,9 @@ type ConvertData struct {
 	totalDuration float64
 }
 
-func NewService(pathFFmpeg string, pathFFprobe string) *Service {
+func NewService(ffPathUtilities FFPathUtilities) *Service {
 	return &Service{
-		pathFFmpeg:  pathFFmpeg,
-		pathFFprobe: pathFFprobe,
+		ffPathUtilities: &ffPathUtilities,
 	}
 }
 
@@ -48,7 +55,7 @@ func (s Service) RunConvert(setting ConvertSetting) error {
 	//args := "-n -i " + setting.VideoFileInput.Path + " -c:v libx264 -progress unix://" + setting.SocketPath + " output-file.mp4"
 	//args := "-y -i " + setting.VideoFileInput.Path + " -c:v libx264 -progress unix://" + setting.SocketPath + " output-file.mp4"
 	args := []string{"-y", "-i", setting.VideoFileInput.Path, "-c:v", "libx264", "-progress", "unix://" + setting.SocketPath, "output-file.mp4"}
-	cmd := exec.Command(s.pathFFmpeg, args...)
+	cmd := exec.Command(s.ffPathUtilities.FFmpeg, args...)
 
 	out, err := cmd.CombinedOutput()
 	if err != nil {
@@ -64,7 +71,7 @@ func (s Service) RunConvert(setting ConvertSetting) error {
 
 func (s Service) GetTotalDuration(file *File) (duration float64, err error) {
 	args := []string{"-v", "error", "-select_streams", "v:0", "-count_packets", "-show_entries", "stream=nb_read_packets", "-of", "csv=p=0", file.Path}
-	cmd := exec.Command(s.pathFFprobe, args...)
+	cmd := exec.Command(s.ffPathUtilities.FFprobe, args...)
 	out, err := cmd.CombinedOutput()
 	if err != nil {
 		errString := strings.TrimSpace(string(out))
@@ -75,3 +82,49 @@ func (s Service) GetTotalDuration(file *File) (duration float64, err error) {
 	}
 	return strconv.ParseFloat(strings.TrimSpace(string(out)), 64)
 }
+
+func (s Service) GetFFmpegVesrion() (string, error) {
+	cmd := exec.Command(s.ffPathUtilities.FFmpeg, "-version")
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return "", err
+	}
+	text := regexp.MustCompile("\r?\n").Split(strings.TrimSpace(string(out)), -1)
+	return text[0], nil
+}
+
+func (s Service) GetFFprobeVersion() (string, error) {
+	cmd := exec.Command(s.ffPathUtilities.FFprobe, "-version")
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return "", err
+	}
+	text := regexp.MustCompile("\r?\n").Split(strings.TrimSpace(string(out)), -1)
+	return text[0], nil
+}
+
+func (s Service) ChangeFFmpegPath(path string) (bool, error) {
+	cmd := exec.Command(path, "-version")
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return false, err
+	}
+	if strings.Contains(strings.TrimSpace(string(out)), "ffmpeg") == false {
+		return false, nil
+	}
+	s.ffPathUtilities.FFmpeg = path
+	return true, nil
+}
+
+func (s Service) ChangeFFprobePath(path string) (bool, error) {
+	cmd := exec.Command(path, "-version")
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return false, err
+	}
+	if strings.Contains(strings.TrimSpace(string(out)), "ffprobe") == false {
+		return false, nil
+	}
+	s.ffPathUtilities.FFprobe = path
+	return true, nil
+}