mapleafgo
ec168be827
Some checks failed
ci/woodpecker/tag/woodpecker Pipeline failed
统一音频输出采样率为 44100Hz，使用 go-audio-resampler 库实现 Windowed Sinc + Polyphase FIR 算法（VeryHigh 28-bit 精度）， 替代原有的线性插值透传方案。 主要变更： - 新增 sincResampler：三阶段 Read 循环（填充→处理→Flush） - 双缓冲区架构避免输出样本丢失，复用内存减少 GC 压力 - WAV/MP3/BGM 播放管线全部接入 Sinc 重采样器 - 移除旧的 linearResampler 和透传模式 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
38 lines
659 B
Go
38 lines
659 B
Go
package audio
|
|
|
|
import (
|
|
"sync"
|
|
|
|
"github.com/ebitengine/oto/v3"
|
|
"go.uber.org/zap"
|
|
)
|
|
|
|
var (
|
|
otoCtx *oto.Context
|
|
otoOnce sync.Once
|
|
)
|
|
|
|
const (
|
|
UniversalSampleRate = 44100
|
|
DefaultChannelCount = 2
|
|
)
|
|
|
|
func initContext() (*oto.Context, error) {
|
|
var initErr error
|
|
otoOnce.Do(func() {
|
|
op := &oto.NewContextOptions{}
|
|
op.SampleRate = UniversalSampleRate
|
|
op.ChannelCount = DefaultChannelCount
|
|
op.Format = oto.FormatSignedInt16LE
|
|
|
|
var ready <-chan struct{}
|
|
otoCtx, ready, initErr = oto.NewContext(op)
|
|
if initErr != nil {
|
|
return
|
|
}
|
|
<-ready
|
|
zap.S().Infof("oto/v3 音频系统就绪 (%d Hz)", UniversalSampleRate)
|
|
})
|
|
return otoCtx, initErr
|
|
}
|