Added 'vidio: ' to error messages

camera.go

@@ -59,7 +59,7 @@ func (camera *Camera) FrameBuffer() []byte {
 func (camera *Camera) SetFrameBuffer(buffer []byte) error {
 	size := camera.width * camera.height * camera.depth
 	if len(buffer) < size {
-		return fmt.Errorf("buffer size %d is smaller than frame size %d", len(buffer), size)
+		return fmt.Errorf("vidio: buffer size %d is smaller than frame size %d", len(buffer), size)
 	}
 	camera.framebuffer = buffer
 	return nil
@@ -86,11 +86,11 @@ func NewCamera(stream int) (*Camera, error) {
 			return nil, err
 		}
 		if stream < 0 || stream >= len(devices) {
-			return nil, fmt.Errorf("could not find device with index: %d", stream)
+			return nil, fmt.Errorf("vidio: could not find device with index: %d", stream)
 		}
 		device = fmt.Sprintf("video=%s", devices[stream])
 	default:
-		return nil, fmt.Errorf("unsupported OS: %s", runtime.GOOS)
+		return nil, fmt.Errorf("vidio: unsupported OS: %s", runtime.GOOS)
 	}
 
 	camera := &Camera{name: device, depth: 4}

imageio.go

@@ -29,7 +29,7 @@ func Read(filename string, buffer ...[]byte) (int, int, []byte, error) {
 	var data []byte
 	if len(buffer) > 0 {
 		if len(buffer[0]) < size {
-			return 0, 0, nil, fmt.Errorf("buffer size (%d) is smaller than image size (%d)", len(buffer[0]), size)
+			return 0, 0, nil, fmt.Errorf("vidio: buffer size (%d) is smaller than image size (%d)", len(buffer[0]), size)
 		}
 		data = buffer[0]
 	} else {
@@ -68,6 +68,6 @@ func Write(filename string, width, height int, buffer []byte) error {
 	case ".jpg", ".jpeg":
 		return jpeg.Encode(f, image, nil)
 	default:
-		return fmt.Errorf("unsupported file extension: %s", filepath.Ext(filename))
+		return fmt.Errorf("vidio: unsupported file extension: %s", filepath.Ext(filename))
 	}
 }

utils.go

@@ -31,7 +31,7 @@ func installed(program string) error {
 	cmd := exec.Command(program, "-version")
 
 	if err := cmd.Run(); err != nil {
-		return fmt.Errorf("%s is not installed", program)
+		return fmt.Errorf("vidio: %s is not installed", program)
 	}
 
 	return nil
@@ -115,7 +115,7 @@ func webcam() (string, error) {
 	case "windows":
 		return "dshow", nil // vfwcap
 	default:
-		return "", fmt.Errorf("unsupported OS: %s", runtime.GOOS)
+		return "", fmt.Errorf("vidio: unsupported OS: %s", runtime.GOOS)
 	}
 }
 

video.go

@@ -92,7 +92,7 @@ func (video *Video) MetaData() map[string]string {
 func (video *Video) SetFrameBuffer(buffer []byte) error {
 	size := video.width * video.height * video.depth
 	if len(buffer) < size {
-		return fmt.Errorf("buffer size %d is smaller than frame size %d", len(buffer), size)
+		return fmt.Errorf("vidio: buffer size %d is smaller than frame size %d", len(buffer), size)
 	}
 	video.framebuffer = buffer
 	return nil
@@ -110,7 +110,7 @@ func NewVideo(filename string) (*Video, error) {
 // Read all video streams from the given file.
 func NewVideoStreams(filename string) ([]*Video, error) {
 	if !exists(filename) {
-		return nil, fmt.Errorf("video file %s does not exist", filename)
+		return nil, fmt.Errorf("vidio: video file %s does not exist", filename)
 	}
 	// Check if ffmpeg and ffprobe are installed on the users machine.
 	if err := installed("ffmpeg"); err != nil {
@@ -126,7 +126,7 @@ func NewVideoStreams(filename string) ([]*Video, error) {
 	}
 
 	if len(videoData) == 0 {
-		return nil, fmt.Errorf("no video data found in %s", filename)
+		return nil, fmt.Errorf("vidio: no video data found in %s", filename)
 	}
 
 	// Loop over all stream types. a: Audio, s: Subtitle, d: Data, t: Attachments

videowriter.go

@@ -151,7 +151,7 @@ func NewVideoWriter(filename string, width, height int, options *Options) (*Vide
 
 	if options.StreamFile != "" {
 		if !exists(options.StreamFile) {
-			return nil, fmt.Errorf("file %s does not exist", options.StreamFile)
+			return nil, fmt.Errorf("vidio: file %s does not exist", options.StreamFile)
 		}
 		writer.streamfile = options.StreamFile
 	}