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Fixes encode/decode on 24bit wav

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This commit is contained in:
Markus Tzoe 2017-08-24 15:41:02 +08:00
parent 626fbecf50
commit 130934ac5d
1 changed files with 11 additions and 4 deletions
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15
util.go
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@ -4,6 +4,8 @@ import (
"encoding/binary" "encoding/binary"
) )
var le = binary.LittleEndian
func computeKeyDigits(p []byte) [8]byte { func computeKeyDigits(p []byte) [8]byte {
var crcLow, crcHigh uint32 = 0xFFFFFFFF, 0xFFFFFFFF var crcLow, crcHigh uint32 = 0xFFFFFFFF, 0xFFFFFFFF
for i := 0; i < len(p); i++ { for i := 0; i < len(p); i++ {
@ -46,22 +48,27 @@ func convertPassword(src string) []byte {
func writeBuffer(src int32, p []byte, depth uint32) { func writeBuffer(src int32, p []byte, depth uint32) {
switch depth { switch depth {
case 2: case 2:
binary.LittleEndian.PutUint16(p, uint16(0xFFFF&src)) le.PutUint16(p, uint16(0xFFFF&src))
case 1: case 1:
p[0] = byte(0xFF & src) p[0] = byte(0xFF & src)
case 3:
le.PutUint16(p, uint16(0xFFFF&src))
p[2] = byte(0xFF & (src >> 16))
default: default:
binary.LittleEndian.PutUint32(p, uint32(0xFFFF&src)) le.PutUint32(p, uint32(src))
} }
} }
func readBuffer(p []byte, depth uint32) (v int32) { func readBuffer(p []byte, depth uint32) (v int32) {
switch depth { switch depth {
case 2: case 2:
v = int32(int16(binary.LittleEndian.Uint16(p))) v = int32(int16(le.Uint16(p)))
case 1: case 1:
v = int32(int8(p[0])) v = int32(int8(p[0]))
case 3:
v = int32(le.Uint16(p)) | int32(uint32(p[2])<<16)
default: default:
v = int32(binary.LittleEndian.Uint32(p)) v = int32(le.Uint32(p))
} }
return return
} }