52 lines
932 B
Go
52 lines
932 B
Go
package codec
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import (
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"github.com/nareix/joy4/av"
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"time"
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)
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type PCMUCodecData struct {
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typ av.CodecType
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}
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func (self PCMUCodecData) Type() av.CodecType {
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return self.typ
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}
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func (self PCMUCodecData) SampleRate() int {
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return 8000
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}
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func (self PCMUCodecData) ChannelLayout() av.ChannelLayout {
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return av.CH_MONO
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}
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func (self PCMUCodecData) SampleFormat() av.SampleFormat {
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return av.S16
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}
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func (self PCMUCodecData) PacketDuration(data []byte) (time.Duration, error) {
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return time.Duration(len(data)) * time.Second / time.Duration(8000), nil
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}
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func NewPCMMulawCodecData() av.AudioCodecData {
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return PCMUCodecData{
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typ: av.PCM_MULAW,
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}
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}
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func NewPCMAlawCodecData() av.AudioCodecData {
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return PCMUCodecData{
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typ: av.PCM_ALAW,
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}
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}
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func NewNellyMoserCodecData() av.AudioCodecData {
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return PCMUCodecData{typ: av.NELLYMOSER}
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}
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func NewSpeexCodecData() av.AudioCodecData {
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return PCMUCodecData{typ: av.SPEEX}
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}
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