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refactor format parser (#682)

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This commit is contained in:
Alessandro Ros
2025-01-18 17:18:04 +01:00
committed by GitHub
parent b7d86f616c
commit 4c8670a4b0
1 changed files with 57 additions and 64 deletions
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121
pkg/format/format.go
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@@ -124,11 +124,67 @@ func Unmarshal(md *psdp.MediaDescription, payloadTypeStr string) (Format, error)
rtpMap := getFormatAttribute(md.Attributes, payloadType, "rtpmap")
fmtp := decodeFMTP(getFormatAttribute(md.Attributes, payloadType, "fmtp"))
codec, clock := getCodecAndClock(rtpMap)
format := func() Format {
switch {
/*
* dynamic payload types
**/
// video
case codec == "av1" && clock == "90000" && payloadType >= 96 && payloadType <= 127:
return &AV1{}
case codec == "vp9" && clock == "90000" && payloadType >= 96 && payloadType <= 127:
return &VP9{}
case codec == "vp8" && clock == "90000" && payloadType >= 96 && payloadType <= 127:
return &VP8{}
case codec == "h265" && clock == "90000" && payloadType >= 96 && payloadType <= 127:
return &H265{}
case codec == "h264" && clock == "90000" && ((payloadType >= 96 && payloadType <= 127) || payloadType == 35):
return &H264{}
case codec == "mp4v-es" && clock == "90000" && payloadType >= 96 && payloadType <= 127:
return &MPEG4Video{}
// audio
case codec == "opus", codec == "multiopus" && payloadType >= 96 && payloadType <= 127:
return &Opus{}
case codec == "vorbis" && payloadType >= 96 && payloadType <= 127:
return &Vorbis{}
case (codec == "mpeg4-generic" || codec == "mp4a-latm") && payloadType >= 96 && payloadType <= 127:
return &MPEG4Audio{}
case codec == "ac3" && payloadType >= 96 && payloadType <= 127:
return &AC3{}
case codec == "speex" && payloadType >= 96 && payloadType <= 127:
return &Speex{}
case (codec == "g726-16" ||
codec == "g726-24" ||
codec == "g726-32" ||
codec == "g726-40" ||
codec == "aal2-g726-16" ||
codec == "aal2-g726-24" ||
codec == "aal2-g726-32" ||
codec == "aal2-g726-40") && clock == "8000" && payloadType >= 96 && payloadType <= 127:
return &G726{}
case codec == "pcma", codec == "pcmu" && payloadType >= 96 && payloadType <= 127:
return &G711{}
case codec == "l8", codec == "l16", codec == "l24" && payloadType >= 96 && payloadType <= 127:
return &LPCM{}
/*
* static payload types
**/
@@ -144,9 +200,6 @@ func Unmarshal(md *psdp.MediaDescription, payloadTypeStr string) (Format, error)
case payloadType == 33:
return &MPEGTS{}
case payloadType == 35 && codec == "h264" && clock == "90000": // Bosch cameras
return &H264{}
// audio
case payloadType == 14:
@@ -160,66 +213,6 @@ func Unmarshal(md *psdp.MediaDescription, payloadTypeStr string) (Format, error)
case payloadType == 10, payloadType == 11:
return &LPCM{}
/*
* dynamic payload types
**/
case payloadType >= 96 && payloadType <= 127:
switch {
// video
case codec == "av1" && clock == "90000":
return &AV1{}
case codec == "vp9" && clock == "90000":
return &VP9{}
case codec == "vp8" && clock == "90000":
return &VP8{}
case codec == "h265" && clock == "90000":
return &H265{}
case codec == "h264" && clock == "90000":
return &H264{}
case codec == "mp4v-es" && clock == "90000":
return &MPEG4Video{}
// audio
case codec == "opus", codec == "multiopus":
return &Opus{}
case codec == "vorbis":
return &Vorbis{}
case codec == "mpeg4-generic", codec == "mp4a-latm":
return &MPEG4Audio{}
case codec == "ac3":
return &AC3{}
case codec == "speex":
return &Speex{}
case (codec == "g726-16" ||
codec == "g726-24" ||
codec == "g726-32" ||
codec == "g726-40" ||
codec == "aal2-g726-16" ||
codec == "aal2-g726-24" ||
codec == "aal2-g726-32" ||
codec == "aal2-g726-40") && clock == "8000":
return &G726{}
case codec == "pcma", codec == "pcmu":
return &G711{}
case codec == "l8", codec == "l16", codec == "l24":
return &LPCM{}
}
}
return &Generic{}