| 1 | package bmumble |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | |
| 6 | "layeh.com/gumble/gumble" |
| 7 | ) |
| 8 | |
| 9 | // This is a dummy implementation of a Gumble audio codec which claims |
| 10 | // to implement Opus, but does not actually do anything. This serves |
| 11 | // as a workaround until https://github.com/layeh/gumble/pull/61 is |
| 12 | // merged. |
| 13 | // See https://github.com/42wim/matterbridge/issues/1750 for details. |
| 14 | |
| 15 | const ( |
| 16 | audioCodecIDOpus = 4 |
| 17 | ) |
| 18 | |
| 19 | func registerNullCodecAsOpus() { |
| 20 | codec := &NullCodec{ |
| 21 | encoder: &NullAudioEncoder{}, |
| 22 | decoder: &NullAudioDecoder{}, |
| 23 | } |
| 24 | gumble.RegisterAudioCodec(audioCodecIDOpus, codec) |
| 25 | } |
| 26 | |
| 27 | type NullCodec struct { |
| 28 | encoder *NullAudioEncoder |
| 29 | decoder *NullAudioDecoder |
| 30 | } |
| 31 | |
| 32 | func (c *NullCodec) ID() int { |
| 33 | return audioCodecIDOpus |
| 34 | } |
| 35 | |
| 36 | func (c *NullCodec) NewEncoder() gumble.AudioEncoder { |
| 37 | e := &NullAudioEncoder{} |
| 38 | return e |
| 39 | } |
| 40 | |
| 41 | func (c *NullCodec) NewDecoder() gumble.AudioDecoder { |
| 42 | d := &NullAudioDecoder{} |
| 43 | return d |
| 44 | } |
| 45 | |
| 46 | type NullAudioEncoder struct{} |
| 47 | |
| 48 | func (e *NullAudioEncoder) ID() int { |
| 49 | return audioCodecIDOpus |
| 50 | } |
| 51 | |
| 52 | func (e *NullAudioEncoder) Encode(pcm []int16, mframeSize, maxDataBytes int) ([]byte, error) { |
| 53 | return nil, fmt.Errorf("not implemented") |
| 54 | } |
| 55 | |
| 56 | func (e *NullAudioEncoder) Reset() { |
| 57 | } |
| 58 | |
| 59 | type NullAudioDecoder struct{} |
| 60 | |
| 61 | func (d *NullAudioDecoder) ID() int { |
| 62 | return audioCodecIDOpus |
| 63 | } |
| 64 | |
| 65 | func (d *NullAudioDecoder) Decode(data []byte, frameSize int) ([]int16, error) { |
| 66 | return nil, fmt.Errorf("not implemented") |
| 67 | } |
| 68 | |
| 69 | func (d *NullAudioDecoder) Reset() { |
| 70 | } |
| 71 | |
