rename 'read' into 'play', 'publish' into 'record' (#463)

examples/client-play-format-mpeg4audio-save-to-disk/mpegts_muxer.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"bufio"
+	"os"
+	"time"
+
+	"github.com/bluenviron/mediacommon/pkg/codecs/mpeg4audio"
+	"github.com/bluenviron/mediacommon/pkg/formats/mpegts"
+)
+
+func durationGoToMPEGTS(v time.Duration) int64 {
+	return int64(v.Seconds() * 90000)
+}
+
+// mpegtsMuxer allows to save a MPEG4-audio stream into a MPEG-TS file.
+type mpegtsMuxer struct {
+	config *mpeg4audio.Config
+	f      *os.File
+	b      *bufio.Writer
+	w      *mpegts.Writer
+	track  *mpegts.Track
+}
+
+// newMPEGTSMuxer allocates a mpegtsMuxer.
+func newMPEGTSMuxer(config *mpeg4audio.Config) (*mpegtsMuxer, error) {
+	f, err := os.Create("mystream.ts")
+	if err != nil {
+		return nil, err
+	}
+	b := bufio.NewWriter(f)
+
+	track := &mpegts.Track{
+		Codec: &mpegts.CodecMPEG4Audio{
+			Config: *config,
+		},
+	}
+
+	w := mpegts.NewWriter(b, []*mpegts.Track{track})
+
+	return &mpegtsMuxer{
+		config: config,
+		f:      f,
+		b:      b,
+		w:      w,
+		track:  track,
+	}, nil
+}
+
+// close closes all the mpegtsMuxer resources.
+func (e *mpegtsMuxer) close() {
+	e.b.Flush()
+	e.f.Close()
+}
+
+// encode encodes MPEG-4 audio access units into MPEG-TS.
+func (e *mpegtsMuxer) encode(aus [][]byte, pts time.Duration) error {
+	return e.w.WriteMPEG4Audio(e.track, durationGoToMPEGTS(pts), aus)
+}