S.O.N.G/go-tta
S.O.N.G/go-tta
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Expose tta_info -> Info, tta_filter -> Filter

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This commit is contained in:
zyxar 2015-08-20 08:46:47 +08:00
parent c4c8280a7d
commit 1de2d32ac5
4 changed files with 12 additions and 12 deletions
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8
decoder.go
View file

@ -30,7 +30,7 @@ func Decompress(infile, outfile io.ReadWriteSeeker, passwd string, cb Callback)
if len(passwd) > 0 {
decoder.SetPassword(passwd)
}
info := tta_info{}
info := Info{}
if err = decoder.GetInfo(&info, 0); err != nil {
return
}
@ -266,7 +266,7 @@ func (this *Decoder) set_position(seconds uint32) (new_pos uint32, err error) {
return
}
func (this *Decoder) SetInfo(info *tta_info) error {
func (this *Decoder) SetInfo(info *Info) error {
if info.format > 2 ||
info.bps < MIN_BPS ||
info.bps > MAX_BPS ||
@ -290,7 +290,7 @@ func (this *Decoder) SetInfo(info *tta_info) error {
return nil
}
func (this *Decoder) ReadHeader(info *tta_info) (uint32, error) {
func (this *Decoder) ReadHeader(info *Info) (uint32, error) {
size := this.fifo.skip_id3v2()
this.fifo.reset()
if 'T' != this.fifo.read_byte() ||
@ -311,7 +311,7 @@ func (this *Decoder) ReadHeader(info *tta_info) (uint32, error) {
return size, nil
}
func (this *Decoder) GetInfo(info *tta_info, pos int64) (err error) {
func (this *Decoder) GetInfo(info *Info, pos int64) (err error) {
if pos != 0 {
if _, err = this.fifo.io.Seek(pos, os.SEEK_SET); err != nil {
err = SEEK_ERROR

6
encoder.go
View file

@ -46,7 +46,7 @@ func Compress(infile, outfile io.ReadWriteSeeker, passwd string, cb Callback) (e
}
encoder := NewEncoder(outfile)
smp_size := uint32(wave_hdr.num_channels * ((wave_hdr.bits_per_sample + 7) / 8))
info := tta_info{
info := Info{
nch: uint32(wave_hdr.num_channels),
bps: uint32(wave_hdr.bits_per_sample),
sps: wave_hdr.sample_rate,
@ -250,7 +250,7 @@ func (this *Encoder) frame_reset(frame uint32, iocb io.ReadWriteSeeker) {
this.frame_init(frame)
}
func (this *Encoder) WriteHeader(info *tta_info) (size uint32, err error) {
func (this *Encoder) WriteHeader(info *Info) (size uint32, err error) {
this.fifo.reset()
// write TTA1 signature
if err = this.fifo.write_byte('T'); err != nil {
@ -288,7 +288,7 @@ func (this *Encoder) WriteHeader(info *tta_info) (size uint32, err error) {
}
func (this *Encoder) SetInfo(info *tta_info, pos int64) (err error) {
func (this *Encoder) SetInfo(info *Info, pos int64) (err error) {
if info.format > 2 ||
info.bps < MIN_BPS ||
info.bps > MAX_BPS ||

4
filter.go
View file

@ -1,7 +1,7 @@
// TODO: SSE4 optimization
package tta
func NewCompatibleFilter(data [8]byte, shift int32) tta_filter {
func NewCompatibleFilter(data [8]byte, shift int32) Filter {
this := tta_filter_compat{}
this.shift = shift
this.round = 1 << uint32(shift-1)
@ -119,7 +119,7 @@ func (this *tta_filter_compat) Encode(in *int32) {
this.error = *in
}
func NewSSEFilter(data [8]byte, shift int32) tta_filter {
func NewSSEFilter(data [8]byte, shift int32) Filter {
this := tta_filter_sse{}
this.shift = shift
this.round = 1 << uint32(shift-1)

6
tta.go
View file

@ -4,7 +4,7 @@ import (
"io"
)
type tta_info struct {
type Info struct {
format uint32 // audio format
nch uint32 // number of channels
bps uint32 // bits per sample
@ -12,7 +12,7 @@ type tta_info struct {
samples uint32 // data length in samples
}
type tta_filter interface {
type Filter interface {
Decode(*int32)
Encode(*int32)
}
@ -44,7 +44,7 @@ func (rice *tta_adapt) init(k0, k1 uint32) {
}
type tta_codec struct {
filter tta_filter
filter Filter
rice tta_adapt
prev int32
}