Snapshot 2007-03-20

1 files changed, 140 insertions, 0 deletions

diff --git a/remux/ts2es.c b/remux/ts2es.c
new file mode 100644
index 0000000..3476e24
--- /dev/null
+++ b/remux/ts2es.c
@@ -0,0 +1,140 @@
+#include "remux/ts2es.h"
+#include "server/streamer.h"
+#include "libdvbmpeg/transform.h"
+#include "common.h"
+#include <vdr/device.h>
+
+// from VDR's remux.c
+#define MAXNONUSEFULDATA (10*1024*1024)
+
+class cTS2ES: public ipack {
+	friend void PutES(uint8_t *Buffer, int Size, void *Data);
+
+private:
+	cRingBufferLinear *m_ResultBuffer;
+
+public:
+	cTS2ES(cRingBufferLinear *ResultBuffer);
+	~cTS2ES();
+
+	void PutTSPacket(const uint8_t *Buffer);
+};
+
+void PutES(uint8_t *Buffer, int Size, void *Data) 
+{
+	cTS2ES *This = (cTS2ES*)Data;
+	uint8_t payl = Buffer[8] + 9 + This->start - 1;
+	int count = Size - payl;
+
+	int n = This->m_ResultBuffer->Put(Buffer + payl, count);
+	if (n != count)
+		esyslog("ERROR: result buffer overflow, dropped %d out of %d byte", count - n, count);
+	This->start = 1;
+}
+
+cTS2ES::cTS2ES(cRingBufferLinear *ResultBuffer) 
+{
+	m_ResultBuffer = ResultBuffer;
+
+	init_ipack(this, IPACKS, PutES, 0);
+	data = (void*)this;
+}
+
+cTS2ES::~cTS2ES() 
+{
+	free_ipack(this);
+}
+
+void cTS2ES::PutTSPacket(const uint8_t *Buffer) {
+  if (!Buffer)
+     return;
+
+  if (Buffer[1] & 0x80) { // ts error
+		// TODO
+	}
+
+  if (Buffer[1] & 0x40) { // payload start
+		if (plength == MMAX_PLENGTH - 6) {
+    	plength = found - 6;
+      found = 0;
+      send_ipack(this);
+      reset_ipack(this);
+    }
+  }
+
+	uint8_t off = 0;
+
+  if (Buffer[3] & 0x20) {  // adaptation field?
+		off = Buffer[4] + 1;
+    if (off + 4 > TS_SIZE - 1)
+      return;
+  }
+
+  instant_repack((uint8_t*)(Buffer + 4 + off), TS_SIZE - 4 - off, this);
+}
+
+cTS2ESRemux::cTS2ESRemux(int Pid):
+		m_Pid(Pid),
+		m_ResultBuffer(new cRingBufferLinear(WRITERBUFSIZE, IPACKS)),
+		m_Remux(new cTS2ES(m_ResultBuffer))
+{
+	m_ResultBuffer->SetTimeouts(0, 100);
+}
+
+cTS2ESRemux::~cTS2ESRemux() 
+{
+	delete m_Remux;
+	delete m_ResultBuffer;
+}
+
+int cTS2ESRemux::Put(const uchar *Data, int Count) 
+{
+	int used = 0;
+
+	// Make sure we are looking at a TS packet:
+
+	while (Count > TS_SIZE) {
+		if (Data[0] == TS_SYNC_BYTE && Data[TS_SIZE] == TS_SYNC_BYTE)
+			break;
+		Data++;
+		Count--;
+		used++;
+	}
+
+	if (used)
+		esyslog("ERROR: skipped %d byte to sync on TS packet", used);
+
+	// Convert incoming TS data into ES:
+
+	for (int i = 0; i < Count; i += TS_SIZE) {
+		if (Count - i < TS_SIZE)
+			break;
+		if (Data[i] != TS_SYNC_BYTE)
+			break;
+		if (m_ResultBuffer->Free() < 2 * IPACKS)
+			break; // A cTS2ES might write one full packet and also a small rest
+		int pid = cTSRemux::GetPid(Data + i + 1);
+		if (Data[i + 3] & 0x10) { // got payload
+			if (m_Pid == pid)
+				m_Remux->PutTSPacket(Data + i);
+		}
+		used += TS_SIZE;
+	}
+
+/*
+  // Check if we're getting anywhere here:
+  if (!synced && skipped >= 0) {
+     if (skipped > MAXNONUSEFULDATA) {
+        esyslog("ERROR: no useful data seen within %d byte of video stream", skipped);
+        skipped = -1;
+        if (exitOnFailure)
+           cThread::EmergencyExit(true);
+        }
+     else
+        skipped += used;
+     }
+*/
+
+	return used;
+}
+