43 lines
927 B
Go
43 lines
927 B
Go
package processor
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import (
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"bytes"
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"fmt"
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"github.com/bluenviron/mediacommon/v2/pkg/codecs/g711"
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"github.com/gen2brain/aac-go"
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)
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// ConvertG711ToLPCM converts G711 to LPCM.
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func ConvertG711ToLPCM(g711Samples []byte, mulaw bool) []byte {
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var pcmSamples []byte
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if mulaw {
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pcmSamples = g711.DecodeMulaw(g711Samples)
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} else {
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pcmSamples = g711.DecodeAlaw(g711Samples)
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}
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return pcmSamples
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}
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// ConvertLPCMToAAC converts G711 to AAC.
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func ConvertLPCMToAAC(pcmSamples []byte) ([]byte, error) {
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var buf bytes.Buffer
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opts := &aac.Options{
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SampleRate: 8000, // Исходная частота G711
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NumChannels: 1,
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}
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enc, err := aac.NewEncoder(&buf, opts)
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if err != nil {
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return nil, fmt.Errorf("error creating encoder: %v", err)
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}
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defer enc.Close()
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r := bytes.NewReader(pcmSamples)
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if err := enc.Encode(r); err != nil {
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return nil, fmt.Errorf("error encoding: %v", err)
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}
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return buf.Bytes(), nil
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}
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