removed Stream interface, can now use filters to get similar functionality

audio/stream.go

@@ -1,99 +0,0 @@
-package audio
-
-type Stream struct {
-	source           Source
-	channel          chan []float32
-	samplesProcessed int
-	buffer           []float32
-	blockSize        int
-}
-
-func NewStream(source Source, blockSize int) *Stream {
-	return &Stream{
-		source:    source,
-		blockSize: blockSize,
-	}
-}
-
-func (s *Stream) GetChannels() int {
-	return s.source.GetChannels()
-}
-
-func (s *Stream) GetSampleRate() int {
-	return s.source.GetSampleRate()
-}
-
-func (s *Stream) GetSamplesProcessed() int {
-	return s.samplesProcessed
-}
-
-func (s *Stream) GetAsChannel() chan float32 {
-	newChannel := make(chan float32)
-	go func() {
-		defer close(newChannel)
-		for {
-			v, more := s.Get()
-			if !more {
-				return
-			}
-			newChannel <- v
-			s.samplesProcessed++
-		}
-	}()
-	return newChannel
-}
-
-func (s *Stream) GetAsBlockChannel() chan []float32 {
-	newChannel := make(chan []float32)
-
-	go func() {
-		defer close(newChannel)
-		for buf := range s.source.ToFloat32().GetBlocks() {
-			s.buffer = append(s.buffer, buf...)
-			for len(s.buffer) >= s.blockSize*s.source.GetChannels() {
-				newChannel <- s.buffer[0 : s.blockSize*s.source.GetChannels()]
-				s.samplesProcessed += s.blockSize * s.source.GetChannels()
-				s.buffer = s.buffer[s.blockSize*s.source.GetChannels():]
-			}
-		}
-
-		if len(s.buffer) > 0 {
-			newChannel <- s.buffer
-			s.samplesProcessed += len(s.buffer)
-		}
-		s.buffer = nil
-	}()
-	return newChannel
-}
-
-func (s *Stream) Get() (float32, bool) {
-	if s.channel == nil {
-		s.channel = s.source.ToFloat32().GetBlocks()
-	}
-	var more bool
-	if len(s.buffer) == 0 {
-		s.buffer, more = <-s.channel
-		if !more {
-			return 0, false
-		}
-	}
-	f := s.buffer[0]
-	s.buffer = s.buffer[1:]
-	s.samplesProcessed++
-	return f, true
-}
-
-func (s *Stream) AdvanceSeconds(seconds float64) bool {
-	stopAt := s.secondsIndex(seconds)
-	for i := 0; i < stopAt; i++ {
-		_, more := s.Get()
-		if !more {
-			return false
-		}
-	}
-	return true
-}
-
-func (s *Stream) secondsIndex(seconds float64) int {
-	return int(seconds * float64(s.source.GetSampleRate()))
-}