Merged in feature/103 (pull request #209)

Export StandardPAT, StandardPMT and MaxPTS.

Approved-by: Saxon Milton <saxon.milton@gmail.com>
Approved-by: Alan Noble <anoble@gmail.com>

container/mts/encoder.go

@@ -34,10 +34,10 @@ import (
 	"bitbucket.org/ausocean/av/container/mts/psi"
 )
 
-// Some common manifestations of PSI
+// Some common manifestations of PSI.
 var (
-	// standardPat is a minimal PAT.
+	// StandardPAT is a minimal PAT.
-	standardPat = psi.PSI{
+	StandardPAT = psi.PSI{
 		Pf:  0x00,
 		Tid: 0x00,
 		Ssi: true,
@@ -55,6 +55,21 @@ var (
 			},
 		},
 	}
+
+	// Base PMT is a minimal PMT without specific data.
+	BasePMT = psi.PSI{
+		Pf:  0x00,
+		Tid: 0x02,
+		Ssi: true,
+		Sl:  0x12,
+		Tss: &psi.TSS{
+			Tide: 0x01,
+			V:    0,
+			Cni:  true,
+			Sn:   0,
+			Lsn:  0,
+		},
+	}
 )
 
 const (
@@ -69,7 +84,7 @@ const (
 var Meta *meta.Data
 
 var (
-	patTable = standardPat.Bytes()
+	patTable = StandardPAT.Bytes()
 	pmtTable []byte
 )
 
@@ -102,6 +117,9 @@ const (
 
 	// PTSFrequency is the presentation timestamp frequency in Hz.
 	PTSFrequency = 90000
+
+	// MaxPTS is the largest PTS value (i.e., for a 33-bit unsigned integer).
+	MaxPTS = (1 << 33) - 1
 )
 
 // Encoder encapsulates properties of an MPEG-TS generator.
@@ -143,29 +161,17 @@ func NewEncoder(dst io.WriteCloser, rate float64, mediaType int) *Encoder {
 		sid = H264ID
 	}
 
-	// standardPmt is a minimal PMT, without descriptors for metadata.
+	pmt := BasePMT
-	pmtTable = (&psi.PSI{
+	pmt.Tss.Sd = &psi.PMT{
-		Pf:  0x00,
+		Pcrpid: 0x0100,
-		Tid: 0x02,
+		Pil:    0,
-		Ssi: true,
+		Essd: &psi.ESSD{
-		Sl:  0x12,
+			St:   byte(sid),
-		Tss: &psi.TSS{
+			Epid: 0x0100,
-			Tide: 0x01,
+			Esil: 0x00,
-			V:    0,
-			Cni:  true,
-			Sn:   0,
-			Lsn:  0,
-			Sd: &psi.PMT{
-				Pcrpid: 0x0100,
-				Pil:    0,
-				Essd: &psi.ESSD{
-					St:   byte(sid),
-					Epid: 0x0100,
-					Esil: 0x00,
-				},
-			},
 		},
-	}).Bytes()
+	}
+	pmtTable = pmt.Bytes()
 
 	return &Encoder{
 		dst: dst,

protocol/rtmp/rtmp_test.go

@@ -173,6 +173,10 @@ func TestErorHandling(t *testing.T) {
 // TestFromFrame tests streaming from a single H.264 frame which is repeated.
 func TestFromFrame(t *testing.T) {
 	testLog(0, "TestFromFrame")
+	testFrame := os.Getenv("RTMP_TEST_FRAME")
+	if testFrame == "" {
+		t.Skip("Skipping TestFromFrame since no RTMP_TEST_FRAME")
+	}
 	if testKey == "" {
 		t.Skip("Skipping TestFromFrame since no RTMP_TEST_KEY")
 	}
@@ -181,7 +185,6 @@ func TestFromFrame(t *testing.T) {
 		t.Errorf("Dial failed with error: %v", err)
 	}
 
-	testFrame := os.Getenv("RTMP_TEST_FRAME")
 	b, err := ioutil.ReadFile(testFrame)
 	if err != nil {
 		t.Errorf("ReadFile failed with error: %v", err)