Dev

README.md

@@ -41,6 +41,10 @@ Trascoding a file from ulaw to wav pcm with CLI
 go get -v github.com/pablodz/sopro
 ```
 
+## Contribution
+
+Every contribution is welcome. If you want to contribute, please create a branch from `master` and create a PR to `develop` branch.
+
 ## Methods planned to be implemented
 
 - [x] Chunked

cmd/sopro/main.go

@@ -9,14 +9,14 @@ import (
 	"github.com/pablodz/sopro/pkg/cpuarch"
 	"github.com/pablodz/sopro/pkg/encoding"
 	"github.com/pablodz/sopro/pkg/fileformat"
+	"github.com/pablodz/sopro/pkg/sopro"
 	"github.com/pablodz/sopro/pkg/transcoder"
 	"github.com/urfave/cli/v2"
 )
 
 const VERSION = "v0.1.3"
 
 func main() {
-
 	app := &cli.App{
 		Name:    "sopro",
 		Usage:   "High performance audio processing tool",
@@ -26,7 +26,6 @@ func main() {
 				Name:  "transcoder",
 				Usage: "Transcode audio files",
 				Flags: []cli.Flag{
-
 					&cli.IntFlag{
 						Name:     "method",
 						Usage:    "transcode method",
@@ -115,7 +114,6 @@ func main() {
 				},
 
 				Action: func(ctx *cli.Context) error {
-
 					fmt.Println("[Version]    ", ctx.App.Version)
 
 					methodT := ctx.Int("method")
@@ -213,10 +211,10 @@ func main() {
 					// create a transcoder
 					t := &transcoder.Transcoder{
 						MethodT: methodT, // method.BIT_LOOKUP_TABLE=1
-						SourceConfigs: transcoder.TranscoderAudioConfig{
+						InConfigs: sopro.AudioConfig{
 							Endianness: cpuarch.LITTLE_ENDIAN,
 						},
-						TargetConfigs: transcoder.TranscoderAudioConfig{
+						OutConfigs: sopro.AudioConfig{
 							Endianness: cpuarch.LITTLE_ENDIAN,
 						},
 						SizeBuffer: buffer,
@@ -225,9 +223,9 @@ func main() {
 
 					// Transcode the file
 					err = t.Mulaw2Wav(
-						&transcoder.AudioFileIn{
+						&sopro.In{
 							Data: in,
-							AudioFileGeneral: transcoder.AudioFileGeneral{
+							AudioFileGeneral: sopro.AudioFileGeneral{
 								Format: fileformat.AUDIO_MULAW,
 								Config: audioconfig.MulawConfig{
 									BitDepth:   inputBits,
@@ -237,9 +235,9 @@ func main() {
 								},
 							},
 						},
-						&transcoder.AudioFileOut{
+						&sopro.Out{
 							Data: out,
-							AudioFileGeneral: transcoder.AudioFileGeneral{
+							AudioFileGeneral: sopro.AudioFileGeneral{
 								Format: fileformat.AUDIO_WAV,
 								Config: audioconfig.WavConfig{
 									BitDepth:   outputBits,

examples/band_limited_sinc_interpolation/main.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"os"
+
+	"github.com/pablodz/sopro/pkg/audioconfig"
+	"github.com/pablodz/sopro/pkg/cpuarch"
+	"github.com/pablodz/sopro/pkg/encoding"
+	"github.com/pablodz/sopro/pkg/fileformat"
+	"github.com/pablodz/sopro/pkg/resampler"
+	"github.com/pablodz/sopro/pkg/sopro"
+)
+
+func main() {
+	// Open the input file
+	in, err := os.Open("./internal/samples/v1_16b_16000.wav")
+	if err != nil {
+		panic(err)
+	}
+	defer in.Close()
+
+	// Create the output file
+	out, err := os.Create("./internal/samples/v1_16b_8000_2.wav")
+	if err != nil {
+		panic(err)
+	}
+	defer out.Close()
+
+	// create a transcoder
+	r := &resampler.Resampler{
+		MethodR: resampler.BAND_LIMITED_INTERPOLATION,
+		InConfigs: sopro.AudioConfig{
+			Endianness: cpuarch.LITTLE_ENDIAN,
+		},
+		OutConfigs: sopro.AudioConfig{
+			Endianness: cpuarch.LITTLE_ENDIAN,
+		},
+		SizeBuffer: 4096,
+		Verbose:    true,
+	}
+
+	// Transcode the file
+	err = r.Wav(
+		&sopro.In{
+			Data: in,
+			AudioFileGeneral: sopro.AudioFileGeneral{
+				Format: fileformat.AUDIO_WAV,
+				Config: audioconfig.WavConfig{
+					BitDepth:   16,
+					Channels:   1,
+					Encoding:   encoding.SPACE_LINEAR, // ulaw is logarithmic
+					SampleRate: 16000,
+				},
+			},
+		},
+		&sopro.Out{
+			Data: out,
+			AudioFileGeneral: sopro.AudioFileGeneral{
+				Format: fileformat.AUDIO_WAV,
+				Config: audioconfig.WavConfig{
+					BitDepth:   8,
+					Channels:   1,
+					Encoding:   encoding.SPACE_LINEAR,
+					SampleRate: 16000,
+				},
+			},
+		},
+	)
+
+	if err != nil {
+		panic(err)
+	}
+}

examples/bytesulaw2wav/main.go

@@ -9,6 +9,7 @@ import (
 	"github.com/pablodz/sopro/pkg/encoding"
 	"github.com/pablodz/sopro/pkg/fileformat"
 	"github.com/pablodz/sopro/pkg/method"
+	"github.com/pablodz/sopro/pkg/sopro"
 	"github.com/pablodz/sopro/pkg/transcoder"
 )
 
@@ -27,10 +28,10 @@ func main() {
 	// create a transcoder
 	t := &transcoder.Transcoder{
 		MethodT: method.BIT_LOOKUP_TABLE,
-		SourceConfigs: transcoder.TranscoderAudioConfig{
+		InConfigs: sopro.AudioConfig{
 			Endianness: cpuarch.LITTLE_ENDIAN,
 		},
-		TargetConfigs: transcoder.TranscoderAudioConfig{
+		OutConfigs: sopro.AudioConfig{
 			Endianness: cpuarch.LITTLE_ENDIAN,
 		},
 		SizeBuffer: 1024,
@@ -39,9 +40,9 @@ func main() {
 
 	// Transcode the file
 	err = t.Mulaw2Wav(
-		&transcoder.AudioFileIn{
+		&sopro.In{
 			Data: in,
-			AudioFileGeneral: transcoder.AudioFileGeneral{
+			AudioFileGeneral: sopro.AudioFileGeneral{
 				Format: fileformat.AUDIO_MULAW,
 				Config: audioconfig.MulawConfig{
 					BitDepth:   8,
@@ -51,9 +52,9 @@ func main() {
 				},
 			},
 		},
-		&transcoder.AudioFileOut{
+		&sopro.Out{
 			Data: out,
-			AudioFileGeneral: transcoder.AudioFileGeneral{
+			AudioFileGeneral: sopro.AudioFileGeneral{
 				Format: fileformat.AUDIO_WAV,
 				Config: audioconfig.WavConfig{
 					BitDepth:   8,

examples/linear_resampler/main.go → examples/linear_interpolation/main.go

@@ -8,7 +8,7 @@ import (
 	"github.com/pablodz/sopro/pkg/encoding"
 	"github.com/pablodz/sopro/pkg/fileformat"
 	"github.com/pablodz/sopro/pkg/resampler"
-	"github.com/pablodz/sopro/pkg/transcoder"
+	"github.com/pablodz/sopro/pkg/sopro"
 )
 
 func main() {
@@ -27,23 +27,23 @@ func main() {
 	defer out.Close()
 
 	// create a transcoder
-	t := &transcoder.Transcoder{
+	r := &resampler.Resampler{
 		MethodR: resampler.LINEAR_INTERPOLATION,
-		SourceConfigs: transcoder.TranscoderAudioConfig{
+		InConfigs: sopro.AudioConfig{
 			Endianness: cpuarch.LITTLE_ENDIAN,
 		},
-		TargetConfigs: transcoder.TranscoderAudioConfig{
+		OutConfigs: sopro.AudioConfig{
 			Endianness: cpuarch.LITTLE_ENDIAN,
 		},
 		SizeBuffer: 1024,
 		Verbose:    true,
 	}
 
 	// Transcode the file
-	err = t.Wav2Wav(
-		&transcoder.AudioFileIn{
+	err = r.Wav(
+		&sopro.In{
 			Data: in,
-			AudioFileGeneral: transcoder.AudioFileGeneral{
+			AudioFileGeneral: sopro.AudioFileGeneral{
 				Format: fileformat.AUDIO_WAV,
 				Config: audioconfig.WavConfig{
 					BitDepth:   16,
@@ -53,9 +53,9 @@ func main() {
 				},
 			},
 		},
-		&transcoder.AudioFileOut{
+		&sopro.Out{
 			Data: out,
-			AudioFileGeneral: transcoder.AudioFileGeneral{
+			AudioFileGeneral: sopro.AudioFileGeneral{
 				Format: fileformat.AUDIO_WAV,
 				Config: audioconfig.WavConfig{
 					BitDepth:   16,

examples/ulaw2wav_logpcm/main.go → examples/mulaw2wav_logpcm/main.go

@@ -8,6 +8,7 @@ import (
 	"github.com/pablodz/sopro/pkg/encoding"
 	"github.com/pablodz/sopro/pkg/fileformat"
 	"github.com/pablodz/sopro/pkg/method"
+	"github.com/pablodz/sopro/pkg/sopro"
 	"github.com/pablodz/sopro/pkg/transcoder"
 )
 
@@ -29,10 +30,10 @@ func main() {
 	// create a transcoder
 	t := &transcoder.Transcoder{
 		MethodT: method.BIT_LOOKUP_TABLE,
-		SourceConfigs: transcoder.TranscoderAudioConfig{
+		InConfigs: sopro.AudioConfig{
 			Endianness: cpuarch.LITTLE_ENDIAN,
 		},
-		TargetConfigs: transcoder.TranscoderAudioConfig{
+		OutConfigs: sopro.AudioConfig{
 			Endianness: cpuarch.LITTLE_ENDIAN,
 		},
 		SizeBuffer: 1024,
@@ -41,9 +42,9 @@ func main() {
 
 	// Transcode the file
 	err = t.Mulaw2Wav(
-		&transcoder.AudioFileIn{
+		&sopro.In{
 			Data: in,
-			AudioFileGeneral: transcoder.AudioFileGeneral{
+			AudioFileGeneral: sopro.AudioFileGeneral{
 				Format: fileformat.AUDIO_MULAW,
 				Config: audioconfig.MulawConfig{
 					BitDepth:   8,
@@ -53,9 +54,9 @@ func main() {
 				},
 			},
 		},
-		&transcoder.AudioFileOut{
+		&sopro.Out{
 			Data: out,
-			AudioFileGeneral: transcoder.AudioFileGeneral{
+			AudioFileGeneral: sopro.AudioFileGeneral{
 				Format: fileformat.AUDIO_WAV,
 				Config: audioconfig.WavConfig{
 					BitDepth:   8,

examples/ulaw2wav_lpcm/main.go → examples/mulaw2wav_lpcm/main.go

@@ -8,6 +8,7 @@ import (
 	"github.com/pablodz/sopro/pkg/encoding"
 	"github.com/pablodz/sopro/pkg/fileformat"
 	"github.com/pablodz/sopro/pkg/method"
+	"github.com/pablodz/sopro/pkg/sopro"
 	"github.com/pablodz/sopro/pkg/transcoder"
 )
 
@@ -19,6 +20,7 @@ func main() {
 	}
 	defer in.Close()
 
+	defer println("Done!", "file:", "./internal/samples/result_sample_ulaw_mono_8000_le_lpcm.wav ")
 	// Create the output file
 	out, err := os.Create("./internal/samples/result_sample_ulaw_mono_8000_le_lpcm.wav")
 	if err != nil {
@@ -29,10 +31,10 @@ func main() {
 	// create a transcoder
 	t := &transcoder.Transcoder{
 		MethodT: method.BIT_LOOKUP_TABLE,
-		SourceConfigs: transcoder.TranscoderAudioConfig{
+		InConfigs: sopro.AudioConfig{
 			Endianness: cpuarch.LITTLE_ENDIAN,
 		},
-		TargetConfigs: transcoder.TranscoderAudioConfig{
+		OutConfigs: sopro.AudioConfig{
 			Endianness: cpuarch.LITTLE_ENDIAN,
 		},
 		SizeBuffer: 1024,
@@ -41,9 +43,9 @@ func main() {
 
 	// Transcode the file
 	err = t.Mulaw2Wav(
-		&transcoder.AudioFileIn{
+		&sopro.In{
 			Data: in,
-			AudioFileGeneral: transcoder.AudioFileGeneral{
+			AudioFileGeneral: sopro.AudioFileGeneral{
 				Format: fileformat.AUDIO_MULAW,
 				Config: audioconfig.MulawConfig{
 					BitDepth:   8,
@@ -53,9 +55,9 @@ func main() {
 				},
 			},
 		},
-		&transcoder.AudioFileOut{
+		&sopro.Out{
 			Data: out,
-			AudioFileGeneral: transcoder.AudioFileGeneral{
+			AudioFileGeneral: sopro.AudioFileGeneral{
 				Format: fileformat.AUDIO_WAV,
 				Config: audioconfig.WavConfig{
 					BitDepth:   16,

pkg/audioconfig/mulaw.go

@@ -1,9 +1,9 @@
 package audioconfig
 
+// MulawConfig is a struct that contains the configuration of a MULAW (RAW) audio file.
 type MulawConfig struct {
 	SampleRate int // the sample rate in Hertz
 	BitDepth   int // the bit depth (e.g. 8, 16, 24)
 	Channels   int // the number of channels (e.g. 1, 2)
 	Encoding   int // the encoding format (e.g. "UNSIGNED", "SIGNED", "FLOAT")
-	// Endianness string // the endianness of the audio data (e.g. "BIG", "LITTLE") The endianess is defined by the processor architecture
 }