Implement RTPProcessor #3063

[arjunshajitech]

This is part 1/2 of a cross-repository series.

Part 2 : pion/webrtc#3064

Description

Replaced RTPReader with RTPprocessor.

Old

BindRemoteStream(info *StreamInfo, reader RTPReader) RTPReader

New

BindRemoteStream(info *StreamInfo, processor RTPProcessor) RTPProcessor

The tight coupling between RTPReader within interceptors prevents RTX packets from passing through the interceptors of the corresponding RTP track.

Reference issue

Fixes #3063

[codecov]

Codecov Report

Attention: Patch coverage is 82.81250% with 11 lines in your changes missing coverage. Please review.

Project coverage is 69.82%. Comparing base (73f7ccf) to head (ec36772).

Files with missing lines	Patch %	Lines
internal/test/mock_stream.go	77.27%	3 Missing and 2 partials ⚠️
chain.go	0.00%	3 Missing ⚠️
pkg/mock/interceptor.go	60.00%	2 Missing ⚠️
pkg/twcc/sender_interceptor.go	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #317      +/-   ##
==========================================
- Coverage   71.69%   69.82%   -1.88%     
==========================================
  Files          79       79              
  Lines        4742     4752      +10     
==========================================
- Hits         3400     3318      -82     
- Misses       1203     1282      +79     
- Partials      139      152      +13     

Flag	Coverage Δ
go	69.69% <82.81%> (-2.01%)	⬇️
wasm	67.48% <73.43%> (-2.15%)	⬇️

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