added license and fixed linting issues

LICENSE

@@ -0,0 +1,25 @@
+BSD 2-Clause License
+
+Copyright (c) [2017], [Tobias Wellnitz]
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

gosamplerate.go

@@ -1,6 +1,6 @@
 // +build linux,cgo darwin,cgo
 
-// Golang binding for libsamplerate (audio sample rate converter)
+// Package gosamplerate is a golang binding for libsamplerate (audio sample rate converter)
 package gosamplerate
 
 /*
@@ -26,6 +26,7 @@ import (
 	"fmt"
 )
 
+// Src struct holding the data for the full API
 type Src struct {
 	srcState     *C.SRC_STATE
 	srcData      *C.SRC_DATA
@@ -43,7 +44,7 @@ const (
 )
 
 //New initializes the converter object and returns a reference to it.
-func New(converterType int, channels int, buffer_len int) (Src, error) {
+func New(converterType int, channels int, bufferLen int) (Src, error) {
 	cConverter := C.int(converterType)
 	cChannels := C.int(channels)
 	var cErr *C.int
@@ -53,8 +54,8 @@ func New(converterType int, channels int, buffer_len int) (Src, error) {
 		return Src{}, errors.New("Could not initialize samplerate converter object")
 	}
 
-	inputBuffer := make([]C.float, buffer_len)
-	outputBuffer := make([]C.float, buffer_len)
+	inputBuffer := make([]C.float, bufferLen)
+	outputBuffer := make([]C.float, bufferLen)
 
 	cData := C.alloc_src_data()
 	cData.data_in = &inputBuffer[0]
@@ -215,7 +216,7 @@ func (src *Src) Process(dataIn []float32, ratio float64, endOfInput bool) ([]flo
 }
 
 // SetRatio sets the samplerate conversion ratio between input and output samples.
-// Normally, when using (src *SRC) Process or the callback, the libary will try to smoothly
+// Normally, when using (src *SRC) Process or the callback, the library will try to smoothly
 // transition between the conversion ratio of the last call and the conversion ratio of the next
 // call. This function bypasses this behaviour and achieves a step response in the conversion rate.
 func (src *Src) SetRatio(ratio float64) error {