bump Golang to 1.23

.github/workflows/lint.yml

@@ -10,16 +10,19 @@ jobs:
   golangci-lint:
     runs-on: ubuntu-22.04
 
+    env:
+      CGO_ENABLED: '0'
+
     steps:
     - uses: actions/checkout@v4
 
     - uses: actions/setup-go@v3
       with:
-        go-version: "1.22"
+        go-version: "1.23"
 
     - uses: golangci/golangci-lint-action@v3
       with:
-        version: v1.59.1
+        version: v1.61.0
 
   go-mod-tidy:
     runs-on: ubuntu-22.04
@@ -29,7 +32,7 @@ jobs:
 
     - uses: actions/setup-go@v3
       with:
-        go-version: "1.22"
+        go-version: "1.23"
 
     - run: |
         go mod tidy

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        go: ["1.20", "1.21", "1.22"]
+        go: ["1.21", "1.22", "1.23"]
 
     steps:
     - uses: actions/checkout@v4
@@ -24,7 +24,7 @@ jobs:
 
     - run: make test-nodocker
 
-    - if: matrix.go == '1.22'
+    - if: matrix.go == '1.23'
       uses: codecov/codecov-action@v3
       with:
         token: ${{ secrets.CODECOV_TOKEN }}

Makefile

@@ -1,5 +1,5 @@
-BASE_IMAGE = golang:1.22-alpine3.18
-LINT_IMAGE = golangci/golangci-lint:v1.59.1
+BASE_IMAGE = golang:1.23-alpine3.20
+LINT_IMAGE = golangci/golangci-lint:v1.61.0
 
 .PHONY: $(shell ls)
 

README.md

@@ -8,7 +8,7 @@
 
 HLS client and muxer library for the Go programming language, written for [MediaMTX](https://github.com/bluenviron/mediamtx).
 
-Go ≥ 1.20 is required.
+Go ≥ 1.21 is required.
 
 Features:
 

examples/client-codec-h264-convert-to-jpeg/main.go

@@ -1,3 +1,6 @@
+//go:build cgo
+// +build cgo
+
 package main
 
 import (

go.mod

@@ -1,6 +1,6 @@
 module github.com/bluenviron/gohlslib/v2
 
-go 1.20
+go 1.21
 
 require (
 	github.com/asticode/go-astits v1.13.0

muxer.go

@@ -204,7 +204,7 @@ func (m *Muxer) Start() error {
 				}
 				hasVideo = true
 			} else {
-				hasAudio = true
+				hasAudio = true //nolint:ineffassign,wastedassign
 			}
 		}
 	}
@@ -245,13 +245,9 @@ func (m *Muxer) Start() error {
 		m.mtracksByTrack[track] = mtrack
 	}
 
-	if m.Variant == MuxerVariantMPEGTS {
-		// nothing
-	} else {
-		// add initial gaps, required by iOS LL-HLS
-		if m.Variant == MuxerVariantLowLatency {
-			m.nextSegmentID = 7
-		}
+	// add initial gaps, required by iOS LL-HLS
+	if m.Variant == MuxerVariantLowLatency {
+		m.nextSegmentID = 7
 	}
 
 	switch {

muxer_segmenter.go

@@ -351,23 +351,21 @@
 
 	if s.muxer.Variant == MuxerVariantMPEGTS {
 		if track.stream.nextSegment == nil {
-			err := s.muxer.createFirstSegment(timestampToDuration(dts, track.ClockRate), ntp)
+			err = s.muxer.createFirstSegment(timestampToDuration(dts, track.ClockRate), ntp)
 			if err != nil {
 				return err
 			}
-		} else {
-			// switch segment
-			if randomAccess &&
-				((timestampToDuration(dts, track.ClockRate)-track.stream.nextSegment.(*muxerSegmentMPEGTS).startDTS) >= s.muxer.SegmentMinDuration ||
-					paramsChanged) {
-				err := s.muxer.rotateSegments(timestampToDuration(dts, track.ClockRate), ntp, false)
-				if err != nil {
-					return err
-				}
+		} else if randomAccess && // switch segment
+			((timestampToDuration(dts, track.ClockRate)-
+				track.stream.nextSegment.(*muxerSegmentMPEGTS).startDTS) >= s.muxer.SegmentMinDuration ||
+				paramsChanged) {
+			err = s.muxer.rotateSegments(timestampToDuration(dts, track.ClockRate), ntp, false)
+			if err != nil {
+				return err
 			}
 		}
 
-		err := track.stream.nextSegment.(*muxerSegmentMPEGTS).writeH264(
+		err = track.stream.nextSegment.(*muxerSegmentMPEGTS).writeH264(
 			track,
 			pts,
 			dts,
@@ -379,25 +377,25 @@
 		}
 
 		return nil
-	} else {
-		ps, err := fmp4.NewPartSampleH26x(
-			int32(pts-dts),
-			randomAccess,
-			au)
-		if err != nil {
-			return err
-		}
+	}
 
-		return s.fmp4WriteSample(
-			track,
-			randomAccess,
-			paramsChanged,
-			&fmp4AugmentedSample{
-				PartSample: *ps,
-				dts:        dts,
-				ntp:        ntp,
-			})
+	ps, err := fmp4.NewPartSampleH26x(
+		int32(pts-dts),
+		randomAccess,
+		au)
+	if err != nil {
+		return err
 	}
+
+	return s.fmp4WriteSample(
+		track,
+		randomAccess,
+		paramsChanged,
+		&fmp4AugmentedSample{
+			PartSample: *ps,
+			dts:        dts,
+			ntp:        ntp,
+		})
 }
 
 func (s *muxerSegmenter) writeOpus(
@@ -445,7 +443,8 @@
 					return err
 				}
 			} else if track.stream.nextSegment.(*muxerSegmentMPEGTS).audioAUCount >= mpegtsSegmentMinAUCount && // switch segment
-				(timestampToDuration(pts, track.ClockRate)-track.stream.nextSegment.(*muxerSegmentMPEGTS).startDTS) >= s.muxer.SegmentMinDuration {
+				(timestampToDuration(pts, track.ClockRate)-
+					track.stream.nextSegment.(*muxerSegmentMPEGTS).startDTS) >= s.muxer.SegmentMinDuration {
 				err := s.muxer.rotateSegments(timestampToDuration(pts, track.ClockRate), ntp, false)
 				if err != nil {
 					return err
@@ -464,34 +463,34 @@
 		}
 
 		return nil
-	} else {
-		sampleRate := track.Codec.(*codecs.MPEG4Audio).Config.SampleRate
-
-		for i, au := range aus {
-			auNTP := ntp.Add(time.Duration(i) * mpeg4audio.SamplesPerAccessUnit *
-				time.Second / time.Duration(sampleRate))
-			auPTS := pts + int64(i)*mpeg4audio.SamplesPerAccessUnit*
-				int64(track.ClockRate)/int64(sampleRate)
-
-			err := s.fmp4WriteSample(
-				track,
-				true,
-				false,
-				&fmp4AugmentedSample{
-					PartSample: fmp4.PartSample{
-						Payload: au,
-					},
-					dts: auPTS,
-					ntp: auNTP,
+	}
+
+	sampleRate := track.Codec.(*codecs.MPEG4Audio).Config.SampleRate
+
+	for i, au := range aus {
+		auNTP := ntp.Add(time.Duration(i) * mpeg4audio.SamplesPerAccessUnit *
+			time.Second / time.Duration(sampleRate))
+		auPTS := pts + int64(i)*mpeg4audio.SamplesPerAccessUnit*
+			int64(track.ClockRate)/int64(sampleRate)
+
+		err := s.fmp4WriteSample(
+			track,
+			true,
+			false,
+			&fmp4AugmentedSample{
+				PartSample: fmp4.PartSample{
+					Payload: au,
 				},
-			)
-			if err != nil {
-				return err
-			}
+				dts: auPTS,
+				ntp: auNTP,
+			},
+		)
+		if err != nil {
+			return err
 		}
-
-		return nil
 	}
+
+	return nil
 }
 
 // iPhone iOS fails if part durations are less than 85% of maximum part duration.
@@ -567,8 +566,10 @@
 	if track.isLeading {
 		// switch segment
 		if randomAccess && (paramsChanged ||
-			(timestampToDuration(track.fmp4NextSample.dts, track.ClockRate)-track.stream.nextSegment.(*muxerSegmentFMP4).startDTS) >= s.muxer.SegmentMinDuration) {
-			err = s.muxer.rotateSegments(timestampToDuration(track.fmp4NextSample.dts, track.ClockRate), track.fmp4NextSample.ntp, paramsChanged)
+			(timestampToDuration(track.fmp4NextSample.dts, track.ClockRate)-
+				track.stream.nextSegment.(*muxerSegmentFMP4).startDTS) >= s.muxer.SegmentMinDuration) {
+			err = s.muxer.rotateSegments(timestampToDuration(track.fmp4NextSample.dts, track.ClockRate),
+				track.fmp4NextSample.ntp, paramsChanged)
 			if err != nil {
 				return err
 			}
@@ -583,7 +584,8 @@
 
 			// switch part
 		} else if (s.muxer.Variant == MuxerVariantLowLatency) &&
-			(timestampToDuration(track.fmp4NextSample.dts, track.ClockRate)-track.stream.nextPart.startDTS) >= s.fmp4AdjustedPartDuration {
+			(timestampToDuration(track.fmp4NextSample.dts, track.ClockRate)-
+				track.stream.nextPart.startDTS) >= s.fmp4AdjustedPartDuration {
 			err := s.muxer.rotateParts(timestampToDuration(track.fmp4NextSample.dts, track.ClockRate))
 			if err != nil {
 				return err

muxer_stream.go

@@ -382,7 +382,7 @@ func (s *muxerStream) handleMediaPlaylist(w http.ResponseWriter, r *http.Request
 }
 
 func (s *muxerStream) generateMediaPlaylistMPEGTS(
-	isDeltaUpdate bool,
+	_ bool,
 	rawQuery string,
 ) ([]byte, error) {
 	pl := &playlist.Media{
@@ -728,8 +728,8 @@ func (s *muxerStream) rotateSegments(
 	s.segments = append(s.segments, segment)
 
 	s.muxer.server.pathHandlers[segment.getPath()] = func(w http.ResponseWriter, _ *http.Request) {
-		r, err := segment.reader()
-		if err != nil {
+		r, err2 := segment.reader()
+		if err2 != nil {
 			w.WriteHeader(http.StatusInternalServerError)
 			return
 		}
@@ -771,7 +771,7 @@ func (s *muxerStream) rotateSegments(
 
 	// regenerate init files only if missing or codec parameters have changed
 	if s.muxer.Variant != MuxerVariantMPEGTS && (!s.initFilePresent || segment.isFromForcedRotation()) {
-		err := s.generateAndCacheInitFile()
+		err = s.generateAndCacheInitFile()
 		if err != nil {
 			return err
 		}
@@ -782,7 +782,8 @@ func (s *muxerStream) rotateSegments(
 		if s.muxer.targetDuration == 0 {
 			s.muxer.targetDuration = targetDuration
 		} else if targetDuration > s.muxer.targetDuration {
-			s.muxer.OnEncodeError(fmt.Errorf("segment duration changed from %ds to %ds - this will cause an error in iOS clients",
+			s.muxer.OnEncodeError(fmt.Errorf(
+				"segment duration changed from %ds to %ds - this will cause an error in iOS clients",
 				s.muxer.targetDuration, targetDuration))
 			s.muxer.targetDuration = targetDuration
 		}