diff options
author | Sam Whited <sam@samwhited.com> | 2022-03-11 13:22:29 -0500 |
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committer | Sam Whited <sam@samwhited.com> | 2022-03-15 09:26:50 -0400 |
commit | 2d95d4d069124df4a4e2473fc23ad3feed19905d (patch) | |
tree | 4e53db9f07cfda2e17745a6870f294db2d4eb756 /vendor/github.com/pion/rtcp/header.go | |
parent | c8dc651f72c09ce252cee729bfc09d8ca6744c36 (diff) |
Remove vendor from git
Previously we saved the vendor tree in version control, making any
commit that changed a dependency rather large.
Go Modules gives us most of the advantages of vendoring except that if a
dependency which is not stored on the proxy is deleted we would lose
access to it.
For now, we can remove the vendor tree and when we get CI working again
we can possibly generate and save the vendor tree as a build artifact.
Signed-off-by: Sam Whited <sam@samwhited.com>
Diffstat (limited to 'vendor/github.com/pion/rtcp/header.go')
-rw-r--r-- | vendor/github.com/pion/rtcp/header.go | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/vendor/github.com/pion/rtcp/header.go b/vendor/github.com/pion/rtcp/header.go deleted file mode 100644 index 055ca18..0000000 --- a/vendor/github.com/pion/rtcp/header.go +++ /dev/null @@ -1,140 +0,0 @@ -package rtcp - -import ( - "encoding/binary" -) - -// PacketType specifies the type of an RTCP packet -type PacketType uint8 - -// RTCP packet types registered with IANA. See: https://www.iana.org/assignments/rtp-parameters/rtp-parameters.xhtml#rtp-parameters-4 -const ( - TypeSenderReport PacketType = 200 // RFC 3550, 6.4.1 - TypeReceiverReport PacketType = 201 // RFC 3550, 6.4.2 - TypeSourceDescription PacketType = 202 // RFC 3550, 6.5 - TypeGoodbye PacketType = 203 // RFC 3550, 6.6 - TypeApplicationDefined PacketType = 204 // RFC 3550, 6.7 (unimplemented) - TypeTransportSpecificFeedback PacketType = 205 // RFC 4585, 6051 - TypePayloadSpecificFeedback PacketType = 206 // RFC 4585, 6.3 - -) - -// Transport and Payload specific feedback messages overload the count field to act as a message type. those are listed here -const ( - FormatSLI uint8 = 2 - FormatPLI uint8 = 1 - FormatFIR uint8 = 4 - FormatTLN uint8 = 1 - FormatRRR uint8 = 5 - FormatREMB uint8 = 15 - - //https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01#page-5 - FormatTCC uint8 = 15 -) - -func (p PacketType) String() string { - switch p { - case TypeSenderReport: - return "SR" - case TypeReceiverReport: - return "RR" - case TypeSourceDescription: - return "SDES" - case TypeGoodbye: - return "BYE" - case TypeApplicationDefined: - return "APP" - case TypeTransportSpecificFeedback: - return "TSFB" - case TypePayloadSpecificFeedback: - return "PSFB" - default: - return string(p) - } -} - -const rtpVersion = 2 - -// A Header is the common header shared by all RTCP packets -type Header struct { - // If the padding bit is set, this individual RTCP packet contains - // some additional padding octets at the end which are not part of - // the control information but are included in the length field. - Padding bool - // The number of reception reports, sources contained or FMT in this packet (depending on the Type) - Count uint8 - // The RTCP packet type for this packet - Type PacketType - // The length of this RTCP packet in 32-bit words minus one, - // including the header and any padding. - Length uint16 -} - -const ( - headerLength = 4 - versionShift = 6 - versionMask = 0x3 - paddingShift = 5 - paddingMask = 0x1 - countShift = 0 - countMask = 0x1f - countMax = (1 << 5) - 1 -) - -// Marshal encodes the Header in binary -func (h Header) Marshal() ([]byte, error) { - /* - * 0 1 2 3 - * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * |V=2|P| RC | PT=SR=200 | length | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - */ - rawPacket := make([]byte, headerLength) - - rawPacket[0] |= rtpVersion << versionShift - - if h.Padding { - rawPacket[0] |= 1 << paddingShift - } - - if h.Count > 31 { - return nil, errInvalidHeader - } - rawPacket[0] |= h.Count << countShift - - rawPacket[1] = uint8(h.Type) - - binary.BigEndian.PutUint16(rawPacket[2:], h.Length) - - return rawPacket, nil -} - -// Unmarshal decodes the Header from binary -func (h *Header) Unmarshal(rawPacket []byte) error { - if len(rawPacket) < headerLength { - return errPacketTooShort - } - - /* - * 0 1 2 3 - * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * |V=2|P| RC | PT | length | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - */ - - version := rawPacket[0] >> versionShift & versionMask - if version != rtpVersion { - return errBadVersion - } - - h.Padding = (rawPacket[0] >> paddingShift & paddingMask) > 0 - h.Count = rawPacket[0] >> countShift & countMask - - h.Type = PacketType(rawPacket[1]) - - h.Length = binary.BigEndian.Uint16(rawPacket[2:]) - - return nil -} |