Switch to our own samplebuilder.

Pion's samplebuilder has been broken for over a month now, switch
to our own.

diskwriter/diskwriter.go

@@ -16,7 +16,8 @@ import (
 	"github.com/at-wat/ebml-go/webm"
 	"github.com/pion/rtp"
 	"github.com/pion/rtp/codecs"
-	"github.com/pion/webrtc/v3/pkg/media/samplebuilder"
+
+	"github.com/jech/samplebuilder"
 
 	"github.com/jech/galene/conn"
 	"github.com/jech/galene/group"

go.mod

@@ -5,6 +5,7 @@ go 1.13
 require (
 	github.com/at-wat/ebml-go v0.16.0
 	github.com/gorilla/websocket v1.4.2
+	github.com/jech/samplebuilder v0.0.0-20210711181036-7fcbcf0988c5
 	github.com/pion/ice/v2 v2.1.8
 	github.com/pion/rtcp v1.2.6
 	github.com/pion/rtp v1.6.6-0.20210512022946-4e87540a7fe6

go.sum

@@ -22,6 +22,8 @@ github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
 github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/jech/samplebuilder v0.0.0-20210711181036-7fcbcf0988c5 h1:ek+KpVz14p6ytAtzMSktZNgtq2Vq6GkIcWiJDv3eP3s=
+github.com/jech/samplebuilder v0.0.0-20210711181036-7fcbcf0988c5/go.mod h1:PXhvo7PKy8CVqirCgoNG2BIjwow2Zd6LwCTScabl584=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=