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/*
* remux.h: A streaming MPEG2 remultiplexer
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: remux.h 1.17.1.1 2008/09/06 14:34:42 kls Exp $
*/
#ifndef __REMUX_H
#define __REMUX_H
#include "ringbuffer.h"
#include "tools.h"
enum ePesHeader {
phNeedMoreData = -1,
phInvalid = 0,
phMPEG1 = 1,
phMPEG2 = 2
};
ePesHeader AnalyzePesHeader(const uchar *Data, int Count, int &PesPayloadOffset, bool *ContinuationHeader = NULL);
// Picture types:
#define NO_PICTURE 0
#define I_FRAME 1
#define P_FRAME 2
#define B_FRAME 3
#define MAXTRACKS 64
class cTS2PES;
class cRemux {
private:
bool exitOnFailure;
bool noVideo;
int numUPTerrors;
bool synced;
int skipped;
cTS2PES *ts2pes[MAXTRACKS];
int numTracks;
cRingBufferLinear *resultBuffer;
int resultSkipped;
int GetPid(const uchar *Data);
public:
cRemux(int VPid, const int *APids, const int *DPids, const int *SPids, bool ExitOnFailure = false);
///< Creates a new remuxer for the given PIDs. VPid is the video PID, while
///< APids, DPids and SPids are pointers to zero terminated lists of audio,
///< dolby and subtitle PIDs (the pointers may be NULL if there is no such
///< PID). If ExitOnFailure is true, the remuxer will initiate an "emergency
///< exit" in case of problems with the data stream.
~cRemux();
void SetTimeouts(int PutTimeout, int GetTimeout) { resultBuffer->SetTimeouts(PutTimeout, GetTimeout); }
///< By default cRemux assumes that Put() and Get() are called from different
///< threads, and uses a timeout in the Get() function in case there is no
///< data available. SetTimeouts() can be used to modify these timeouts.
///< Especially if Put() and Get() are called from the same thread, setting
///< both timeouts to 0 is recommended.
int Put(const uchar *Data, int Count);
///< Puts at most Count bytes of Data into the remuxer.
///< \return Returns the number of bytes actually consumed from Data.
uchar *Get(int &Count, uchar *PictureType = NULL);
///< Gets all currently available data from the remuxer.
///< \return Count contains the number of bytes the result points to, and
///< PictureType (if not NULL) will contain one of NO_PICTURE, I_FRAME, P_FRAME
///< or B_FRAME.
void Del(int Count);
///< Deletes Count bytes from the remuxer. Count must be the number returned
///< from a previous call to Get(). Several calls to Del() with fractions of
///< a previously returned Count may be made, but the total sum of all Count
///< values must be exactly what the previous Get() has returned.
void Clear(void);
///< Clears the remuxer of all data it might still contain, keeping the PID
///< settings as they are.
static void SetBrokenLink(uchar *Data, int Length);
static int GetPacketLength(const uchar *Data, int Count, int Offset);
static int ScanVideoPacket(const uchar *Data, int Count, int Offset, uchar &PictureType);
};
#endif // __REMUX_H
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