// IANA Assigned VoIP Codec Payload Types
//
// The following codecs have been standardized by IANA thereby
// allowing their 'a=rtpmap' information to be omitted in SDP
// messages.  they've been hard coded to make your life easier.
//
// Many of these codecs (G711, G722, G726, GSM, LPC) have been
// implemented by Steve Underwood in his excellent SpanDSP library.
//
// Newer codecs like silk, broadvoice, speex, etc. use a dynamic
// payload type.
//
// Reference Material:
//
// - IANA Payload Types: http://www.iana.org/assignments/rtp-parameters
// - Explains well-known ITU codecs: http://tools.ietf.org/html/rfc3551
//

package sdp

var (
	ULAWCodec = &Codec{PT: 0, Name: "PCMU", Rate: 8000}
	DTMFCodec = &Codec{PT: 101, Name: "telephone-event", Rate: 8000, Fmtp: "0-16"}

	StandardCodecs = map[uint8]*Codec{
		// G.711 μ-Law is the de-facto codec (SpanDSP g711.h)
		0: ULAWCodec,
		// Uncool codec asterisk ppl like (SpanDSP gsm0610.h)
		3: &Codec{PT: 3, Name: "GSM", Rate: 8000},
		4: &Codec{PT: 4, Name: "G723", Rate: 8000},
		// adaptive pulse code modulation (SpanDSP ima_adpcm.h)
		5: &Codec{PT: 5, Name: "DVI4", Rate: 8000},
		6: &Codec{PT: 6, Name: "DVI4", Rate: 16000},
		// chat with your friends ww2 field marshall style (SpanDSP lpc10.h)
		7: &Codec{PT: 7, Name: "LPC", Rate: 8000},
		// G.711 variant of μ-Law used in yurop (SpanDSP g711.h)
		8: &Codec{PT: 8, Name: "PCMA", Rate: 8000},
		// used for Polycom HD Voice; rate actually 16khz lol (SpanDSP g722.h)
		9: &Codec{PT: 9, Name: "G722", Rate: 8000},
		// 16-bit signed PCM stereo/mono (mind your MTU; adjust ptime)
		10: &Codec{PT: 10, Name: "L16", Rate: 44100, Param: "2"},
		11: &Codec{PT: 11, Name: "L16", Rate: 44100},
		12: &Codec{PT: 12, Name: "QCELP", Rate: 8000},
		// RFC3389 comfort noise
		13: &Codec{PT: 13, Name: "CN", Rate: 8000},
		14: &Codec{PT: 14, Name: "MPA", Rate: 90000},
		15: &Codec{PT: 15, Name: "G728", Rate: 8000},
		16: &Codec{PT: 16, Name: "DVI4", Rate: 11025},
		17: &Codec{PT: 17, Name: "DVI4", Rate: 22050},
		// best voice codec (if you got $10 bucks)
		18: &Codec{PT: 18, Name: "G729", Rate: 8000},
		25: &Codec{PT: 25, Name: "CelB", Rate: 90000},
		26: &Codec{PT: 26, Name: "JPEG", Rate: 90000},
		28: &Codec{PT: 28, Name: "nv", Rate: 90000},
		// RFC4587 video
		31: &Codec{PT: 31, Name: "H261", Rate: 90000},
		32: &Codec{PT: 32, Name: "MPV", Rate: 90000},
		33: &Codec{PT: 33, Name: "MP2T", Rate: 90000},
		// $$$ video
		34: &Codec{PT: 34, Name: "H263", Rate: 90000},
	}
)