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audio/internal/convert: Use byte instead of uint8

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This commit is contained in:
Hajime Hoshi 2021-10-31 19:34:52 +09:00
parent 45deaced69
commit 611cbad5d7
3 changed files with 18 additions and 18 deletions
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4
audio/internal/convert/float32.go
View File

@ -80,8 +80,8 @@ func (f *f32Reader) Read(buf []byte) (int, error) {
for i := 0; i < n; i++ { for i := 0; i < n; i++ {
f := f.fbuf[i] f := f.fbuf[i]
s := int16(f * (1<<15 - 1)) s := int16(f * (1<<15 - 1))
b[2*i] = uint8(s) b[2*i] = byte(s)
b[2*i+1] = uint8(s >> 8) b[2*i+1] = byte(s >> 8)
} }
if len(buf) == 1 && len(b) == 2 { if len(buf) == 1 && len(b) == 2 {

12
audio/internal/convert/resampling.go
View File

@ -110,7 +110,7 @@ func (r *Resampling) src(i int64) (float64, float64, error) {
return 0, 0, err return 0, 0, err
} }
} }
buf := make([]uint8, resamplingBufferSize*4) buf := make([]byte, resamplingBufferSize*4)
c := 0 c := 0
for c < len(buf) { for c < len(buf) {
n, err := r.source.Read(buf[c:]) n, err := r.source.Read(buf[c:])
@ -202,7 +202,7 @@ func (r *Resampling) at(t int64) (float64, float64, error) {
return lv, rv, nil return lv, rv, nil
} }
func (r *Resampling) Read(b []uint8) (int, error) { func (r *Resampling) Read(b []byte) (int, error) {
if r.pos == r.Length() { if r.pos == r.Length() {
return 0, io.EOF return 0, io.EOF
} }
@ -217,10 +217,10 @@ func (r *Resampling) Read(b []uint8) (int, error) {
} }
l16 := int16(l * (1<<15 - 1)) l16 := int16(l * (1<<15 - 1))
r16 := int16(r * (1<<15 - 1)) r16 := int16(r * (1<<15 - 1))
b[4*i] = uint8(l16) b[4*i] = byte(l16)
b[4*i+1] = uint8(l16 >> 8) b[4*i+1] = byte(l16 >> 8)
b[4*i+2] = uint8(r16) b[4*i+2] = byte(r16)
b[4*i+3] = uint8(r16 >> 8) b[4*i+3] = byte(r16 >> 8)
} }
r.pos += int64(n) r.pos += int64(n)
return n, nil return n, nil

20
audio/internal/convert/stereo16.go
View File

@ -32,7 +32,7 @@ func NewStereo16(source io.ReadSeeker, mono, eight bool) *Stereo16 {
} }
} }
func (s *Stereo16) Read(b []uint8) (int, error) { func (s *Stereo16) Read(b []byte) (int, error) {
l := len(b) l := len(b)
if s.mono { if s.mono {
l /= 2 l /= 2
@ -40,7 +40,7 @@ func (s *Stereo16) Read(b []uint8) (int, error) {
if s.eight { if s.eight {
l /= 2 l /= 2
} }
buf := make([]uint8, l) buf := make([]byte, l)
n, err := s.source.Read(buf) n, err := s.source.Read(buf)
if err != nil && err != io.EOF { if err != nil && err != io.EOF {
return 0, err return 0, err
@ -49,10 +49,10 @@ func (s *Stereo16) Read(b []uint8) (int, error) {
case s.mono && s.eight: case s.mono && s.eight:
for i := 0; i < n; i++ { for i := 0; i < n; i++ {
v := int16(int(buf[i])*0x101 - (1 << 15)) v := int16(int(buf[i])*0x101 - (1 << 15))
b[4*i] = uint8(v) b[4*i] = byte(v)
b[4*i+1] = uint8(v >> 8) b[4*i+1] = byte(v >> 8)
b[4*i+2] = uint8(v) b[4*i+2] = byte(v)
b[4*i+3] = uint8(v >> 8) b[4*i+3] = byte(v >> 8)
} }
case s.mono && !s.eight: case s.mono && !s.eight:
for i := 0; i < n/2; i++ { for i := 0; i < n/2; i++ {
@ -65,10 +65,10 @@ func (s *Stereo16) Read(b []uint8) (int, error) {
for i := 0; i < n/2; i++ { for i := 0; i < n/2; i++ {
v0 := int16(int(buf[2*i])*0x101 - (1 << 15)) v0 := int16(int(buf[2*i])*0x101 - (1 << 15))
v1 := int16(int(buf[2*i+1])*0x101 - (1 << 15)) v1 := int16(int(buf[2*i+1])*0x101 - (1 << 15))
b[4*i] = uint8(v0) b[4*i] = byte(v0)
b[4*i+1] = uint8(v0 >> 8) b[4*i+1] = byte(v0 >> 8)
b[4*i+2] = uint8(v1) b[4*i+2] = byte(v1)
b[4*i+3] = uint8(v1 >> 8) b[4*i+3] = byte(v1 >> 8)
} }
} }
if s.mono { if s.mono {