Split format description into encoder/decoder ones

audio/format/aac/libfdk-aac.go

@@ -26,10 +26,14 @@ func (f Format) Name() string {
 	return "aac"
 }
 
-func (f Format) Description() string {
+func (f Format) DecoderDescription() string {
 	return fmt.Sprintf("libfdk-aac %s (S.O.N.G/go-fdkaac)", fdkaac.EncoderVersion())
 }
 
+func (f Format) EncoderDescription() string {
+	return f.DecoderDescription()
+}
+
 func decodeFrame(decoder *fdkaac.AacDecoder, r io.Reader) ([]int16, error) {
 	pcm, err := tryDecodeFrame(decoder)
 	if err != nil {

audio/format/aac/vo-aacenc.go

@@ -20,7 +20,7 @@ func (f Format) Name() string {
 	return "aac"
 }
 
-func (f Format) Description() string {
+func (f Format) EncoderDescription() string {
 	return "vo-aacenc (gen2brain/aac-go)"
 }
 

audio/format/alac/libalac.go

@@ -24,10 +24,14 @@ func (f Format) Name() string {
 	return "alac"
 }
 
-func (f Format) Description() string {
+func (f Format) DecoderDescription() string {
 	return "libalac (S.O.N.G/go-alac)"
 }
 
+func (f Format) EncoderDescription() string {
+	return f.DecoderDescription()
+}
+
 func (f Format) Open(r io.ReadSeekCloser) (audio.Source, error) {
 	mp4Demuxer, err := tryDecodeMP4(r)
 	if err != nil {

audio/format/flac/goflac.go

@@ -21,7 +21,7 @@ func (f Format) Name() string {
 	return "flac"
 }
 
-func (f Format) Description() string {
+func (f Format) DecoderDescription() string {
 	return "mewkiz/flac"
 }
 

audio/format/flac/libflac.go

@@ -22,10 +22,14 @@ func (f Format) Name() string {
 	return "flac"
 }
 
-func (f Format) Description() string {
+func (f Format) DecoderDescription() string {
 	return fmt.Sprintf("%s (S.O.N.G/goflac)", libflac.Vendor())
 }
 
+func (f Format) EncoderDescription() string {
+	return f.DecoderDescription()
+}
+
 func (f Format) Open(r io.ReadSeekCloser) (audio.Source, error) {
 	currentPosition, _ := r.Seek(0, io.SeekCurrent)
 	decoder, err := libflac.NewDecoderReader(r)

audio/format/format.go

@@ -10,8 +10,6 @@ type Format interface {
 	Identify(peek []byte, extension string) bool
 	// Name returns the name of the codec or format
 	Name() string
-	// Description returns a longer description of the backing libraries or versions
-	Description() string
 }
 
 type WriteSeekCloser interface {
@@ -24,10 +22,16 @@ type Decoder interface {
 	Format
 	// Open a stream and decodes it into an audio.Source
 	Open(r io.ReadSeekCloser) (audio.Source, error)
+
+	// DecoderDescription returns a longer description of the backing libraries or versions
+	DecoderDescription() string
 }
 
 type Encoder interface {
 	Format
 	// Encode Receives an audio.Source and encodes it into a writer. Some formats can do special operations if writer is also an io.Seeker
 	Encode(source audio.Source, writer io.WriteCloser, options map[string]interface{}) error
+
+	// EncoderDescription returns a longer description of the backing libraries or versions
+	EncoderDescription() string
 }

audio/format/guess/guess.go

@@ -17,7 +17,11 @@ func (f NullFormat) Name() string {
 	return f.name
 }
 
-func (f NullFormat) Description() string {
+func (f NullFormat) DecoderDescription() string {
+	return "null"
+}
+
+func (f NullFormat) EncoderDescription() string {
 	return "null"
 }
 

audio/format/mp3/mp3.go

@@ -23,6 +23,10 @@ func (f Format) Name() string {
 	return "mp3"
 }
 
+func (f Format) DecoderDescription() string {
+	return "kvark128/minimp3"
+}
+
 func (f Format) Open(r io.ReadSeekCloser) (audio.Source, error) {
 	decoder := mp3Lib.NewDecoder(r)
 

audio/format/mp3/mp3_lame.go

@@ -16,9 +16,9 @@ import (
 	"unsafe"
 )
 
-func (f Format) Description() string {
+func (f Format) EncoderDescription() string {
 	//TODO: move version fetch to viert/go-lame
-	return fmt.Sprintf("kvark128/minimp3, LAME %s (viert/go-lame)", C.GoString(C.get_lame_version()))
+	return fmt.Sprintf("LAME %s (viert/go-lame)", C.GoString(C.get_lame_version()))
 }
 
 func (f Format) Encode(source audio.Source, writer io.WriteCloser, options map[string]interface{}) error {

audio/format/mp3/mp3_nocgo.go

@@ -22,7 +22,8 @@ func NewFormat() Format {
 func (f Format) Name() string {
 	return "mp3"
 }
-func (f Format) Description() string {
+
+func (f Format) DecoderDescription() string {
 	return "hajimehoshi/go-mp3"
 }
 

audio/format/mp3/mp3_nolame.go

@@ -1,7 +0,0 @@
-//go:build !disable_format_mp3 && disable_codec_lame && cgo
-
-package mp3
-
-func (f Format) Description() string {
-	return "kvark128/minimp3"
-}

audio/format/opus/opus.go

@@ -25,10 +25,14 @@ func (f Format) Name() string {
 	return "opus"
 }
 
-func (f Format) Description() string {
+func (f Format) DecoderDescription() string {
 	return fmt.Sprintf("%s (S.O.N.G/go-pus)", libopus.Version())
 }
 
+func (f Format) EncoderDescription() string {
+	return f.DecoderDescription()
+}
+
 func (f Format) Open(r io.ReadSeekCloser) (audio.Source, error) {
 	stream, err := libopus.NewStream(r)
 	if err != nil {

audio/format/tta/tta.go

@@ -23,10 +23,14 @@ func (f Format) Name() string {
 	return "tta"
 }
 
-func (f Format) Description() string {
+func (f Format) DecoderDescription() string {
 	return "S.O.N.G/go-tta"
 }
 
+func (f Format) EncoderDescription() string {
+	return f.DecoderDescription()
+}
+
 func NewFormat() Format {
 	return Format{}
 }

audio/format/vorbis/vorbis.go

@@ -20,7 +20,7 @@ func (f Format) Name() string {
 	return "vorbis"
 }
 
-func (f Format) Description() string {
+func (f Format) DecoderDescription() string {
 	return "jfreymuth/oggvorvis"
 }