mirror of
https://github.com/aler9/gortsplib
synced 2025-10-04 14:52:46 +08:00
a1396206b5
* split tracks from medias * move tracks into dedicated package * move media into dedicated package * edit Medias.Marshal() in order to return SDP * add medias.Find() and simplify examples * improve coverage * fix rebase errors * replace TrackIDs with MediaIDs * implement media-specific and track-specific callbacks for reading RTCP and RTP packets * rename publish into record, read into play * add v2 tag * rename tracks into formats
85 lines
1.6 KiB
Go
85 lines
1.6 KiB
Go
package format
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import (
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"fmt"
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"strings"
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"github.com/pion/rtp"
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"github.com/aler9/gortsplib/v2/pkg/rtpcodecs/rtpsimpleaudio"
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)
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// G711 is a G711 format, encoded with mu-law or A-law.
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type G711 struct {
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// whether to use mu-law. Otherwise, A-law is used.
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MULaw bool
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}
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// String implements Format.
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func (t *G711) String() string {
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return "G711"
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}
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// ClockRate implements Format.
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func (t *G711) ClockRate() int {
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return 8000
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}
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// PayloadType implements Format.
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func (t *G711) PayloadType() uint8 {
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if t.MULaw {
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return 0
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}
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return 8
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}
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func (t *G711) unmarshal(payloadType uint8, clock string, codec string, rtpmap string, fmtp string) error {
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tmp := strings.Split(clock, "/")
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if len(tmp) == 2 && tmp[1] != "1" {
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return fmt.Errorf("G711 formats can have only one channel")
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}
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t.MULaw = (payloadType == 0)
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return nil
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}
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// Marshal implements Format.
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func (t *G711) Marshal() (string, string) {
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if t.MULaw {
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return "PCMU/8000", ""
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}
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return "PCMA/8000", ""
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}
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// Clone implements Format.
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func (t *G711) Clone() Format {
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return &G711{
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MULaw: t.MULaw,
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}
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}
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// PTSEqualsDTS implements Format.
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func (t *G711) PTSEqualsDTS(*rtp.Packet) bool {
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return true
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}
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// CreateDecoder creates a decoder able to decode the content of the format.
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func (t *G711) CreateDecoder() *rtpsimpleaudio.Decoder {
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d := &rtpsimpleaudio.Decoder{
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SampleRate: 8000,
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}
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d.Init()
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return d
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}
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// CreateEncoder creates an encoder able to encode the content of the format.
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func (t *G711) CreateEncoder() *rtpsimpleaudio.Encoder {
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e := &rtpsimpleaudio.Encoder{
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PayloadType: t.PayloadType(),
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SampleRate: 8000,
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}
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e.Init()
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return e
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}
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