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audio/internal/convert: Rename members

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This commit is contained in:
Hajime Hoshi 2017-12-27 18:05:55 +09:00
parent 50a6158513
commit 6d6504085c
1 changed files with 16 additions and 16 deletions
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32
audio/internal/convert/resampling.go
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@ -30,15 +30,15 @@ func sinc(x float64) float64 {
}
type Resampling struct {
source audio.ReadSeekCloser
size int64
from int
to int
pos int64
srcBlock int64
srcBufL map[int64][]float64
srcBufR map[int64][]float64
lruBlock []int64
source audio.ReadSeekCloser
size int64
from int
to int
pos int64
srcBlock int64
srcBufL map[int64][]float64
srcBufR map[int64][]float64
lruSrcBlocks []int64
}
const resamplingBufferSize = 4096
@ -100,17 +100,17 @@ func (r *Resampling) src(i int) (float64, float64, error) {
r.srcBufL[r.srcBlock] = sl
r.srcBufR[r.srcBlock] = sr
// To keep srcBufL/R not too big, let's remove the least used buffers.
if len(r.lruBlock) >= 4 {
p := r.lruBlock[0]
if len(r.lruSrcBlocks) >= 4 {
p := r.lruSrcBlocks[0]
delete(r.srcBufL, p)
delete(r.srcBufR, p)
r.lruBlock = r.lruBlock[1:]
r.lruSrcBlocks = r.lruSrcBlocks[1:]
}
r.lruBlock = append(r.lruBlock, r.srcBlock)
r.lruSrcBlocks = append(r.lruSrcBlocks, r.srcBlock)
} else {
r.srcBlock = nextPos
idx := -1
for i, p := range r.lruBlock {
for i, p := range r.lruSrcBlocks {
if p == r.srcBlock {
idx = i
break
@ -119,8 +119,8 @@ func (r *Resampling) src(i int) (float64, float64, error) {
if idx == -1 {
panic("not reach")
}
r.lruBlock = append(r.lruBlock[:idx], r.lruBlock[idx+1:]...)
r.lruBlock = append(r.lruBlock, r.srcBlock)
r.lruSrcBlocks = append(r.lruSrcBlocks[:idx], r.lruSrcBlocks[idx+1:]...)
r.lruSrcBlocks = append(r.lruSrcBlocks, r.srcBlock)
}
ii := i % resamplingBufferSize
return r.srcBufL[r.srcBlock][ii], r.srcBufR[r.srcBlock][ii], nil