X-Git-Url: http://code.vuplus.com/gitweb/?p=vuplus_dvbapp;a=blobdiff_plain;f=lib%2Fdvb%2Ftstools.h;h=c230a341e580f8e914de48cda41370f7681153a4;hp=1316825390391782b63b072e10a5deacfcb349a5;hb=0cb206d2c07cb9e4130e13234e3fd59b127421a8;hpb=7fe561a6df44e7d71ff436a84bfd7e8881d24373

diff --git a/lib/dvb/tstools.h b/lib/dvb/tstools.h
index 1316825..c230a34 100644
--- a/lib/dvb/tstools.h
+++ b/lib/dvb/tstools.h
@@ -40,7 +40,7 @@ public:
 	int fixupPTS(const off_t &offset, pts_t &pts);
 	
 		/* get (approximate) offset corresponding to PTS */
-	int getOffset(off_t &offset, pts_t &pts);
+	int getOffset(off_t &offset, pts_t &pts, int marg=0);
 	
 	int getNextAccessPoint(pts_t &ts, const pts_t &start, int direction);
 	
@@ -55,6 +55,23 @@ public:
 	int takeSample(off_t off, pts_t &p);
 	
 	int findPMT(int &pmt_pid, int &service_id);
+	
+	enum { 
+		frametypeI = 1, 
+		frametypeP = 2, 
+		frametypeB = 4, 
+		frametypeAll = frametypeI | frametypeP | frametypeB
+	};
+	/** findFrame: finds a specific frame at a given position
+	
+	findFrame will look for the specified frame type starting at the given position, moving forward
+	(when direction is >0) or backward (when direction is <0). (direction=0 is a special case and also moves
+	forward, but starts with the last frame.)
+	
+	return values are the new offset, the length of the found frame (both unaligned), and the (signed) 
+	number of frames skipped. */
+	int findFrame(off_t &offset, size_t &len, int &direction, int frame_types = frametypeI);
+	int findNextPicture(off_t &offset, size_t &len, int &distance, int frame_types = frametypeAll);
 private:
 	int m_pid;
 	int m_maxrange;