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35 lines
885 B
35 lines
885 B
package sdp
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import (
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"bytes"
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"strconv"
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)
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// Media is a high level representation of the c=/m=/a= lines for describing a
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// specific type of media. Only "audio" and "video" are supported at this time.
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type Media struct {
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Proto string // RTP, SRTP, UDP, UDPTL, TCP, TLS, etc.
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Port uint16 // Port number (0 - 2^16-1)
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Codecs []Codec // Collection of codecs of a specific type.
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}
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func (media *Media) Append(type_ string, b *bytes.Buffer) {
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b.WriteString("m=")
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b.WriteString(type_)
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b.WriteString(" ")
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b.WriteString(strconv.FormatUint(uint64(media.Port), 10))
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b.WriteString(" ")
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if media.Proto == "" {
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b.WriteString("RTP/AVP")
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} else {
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b.WriteString(media.Proto)
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}
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for _, codec := range media.Codecs {
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b.WriteString(" ")
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b.WriteString(strconv.FormatInt(int64(codec.PT), 10))
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}
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b.WriteString("\r\n")
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for _, codec := range media.Codecs {
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codec.Append(b)
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}
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}
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