mirror of https://github.com/VDR4Arch/vdr.git
85 lines
3.1 KiB
C++
85 lines
3.1 KiB
C++
/*
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* remux.h: A streaming MPEG2 remultiplexer
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: remux.h 1.15 2005/08/26 13:22:19 kls Exp $
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*/
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#ifndef __REMUX_H
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#define __REMUX_H
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#include <time.h> //XXX FIXME: DVB/linux/dvb/dmx.h should include <time.h> itself!!!
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#include <linux/dvb/dmx.h>
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#include "ringbuffer.h"
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#include "tools.h"
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enum ePesHeader {
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phNeedMoreData = -1,
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phInvalid = 0,
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phMPEG1 = 1,
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phMPEG2 = 2
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};
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ePesHeader AnalyzePesHeader(const uchar *Data, int Count, int &PesPayloadOffset, bool *ContinuationHeader = NULL);
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// Picture types:
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#define NO_PICTURE 0
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#define I_FRAME 1
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#define P_FRAME 2
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#define B_FRAME 3
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#define MAXTRACKS 64
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class cTS2PES;
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class cRemux {
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private:
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bool exitOnFailure;
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bool isRadio;
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int numUPTerrors;
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bool synced;
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int skipped;
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cTS2PES *ts2pes[MAXTRACKS];
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int numTracks;
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cRingBufferLinear *resultBuffer;
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int resultSkipped;
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int GetPid(const uchar *Data);
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int GetPacketLength(const uchar *Data, int Count, int Offset);
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int ScanVideoPacket(const uchar *Data, int Count, int Offset, uchar &PictureType);
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public:
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cRemux(int VPid, const int *APids, const int *DPids, const int *SPids, bool ExitOnFailure = false);
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///< Creates a new remuxer for the given PIDs. VPid is the video PID, while
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///< APids, DPids and SPids are pointers to zero terminated lists of audio,
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///< dolby and subtitle PIDs (the pointers may be NULL if there is no such
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///< PID). If ExitOnFailure is true, the remuxer will initiate an "emergency
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///< exit" in case of problems with the data stream.
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~cRemux();
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void SetTimeouts(int PutTimeout, int GetTimeout) { resultBuffer->SetTimeouts(PutTimeout, GetTimeout); }
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///< By default cRemux assumes that Put() and Get() are called from different
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///< threads, and uses a timeout in the Get() function in case there is no
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///< data available. SetTimeouts() can be used to modify these timeouts.
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///< Especially if Put() and Get() are called from the same thread, setting
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///< both timeouts to 0 is recommended.
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int Put(const uchar *Data, int Count);
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///< Puts at most Count bytes of Data into the remuxer.
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///< \return Returns the number of bytes actually consumed from Data.
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uchar *Get(int &Count, uchar *PictureType = NULL);
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///< Gets all currently available data from the remuxer.
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///< \return Count contains the number of bytes the result points to, and
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///< PictureType (if not NULL) will contain one of NO_PICTURE, I_FRAME, P_FRAME
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///< or B_FRAME.
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void Del(int Count);
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///< Deletes Count bytes from the remuxer. Count must be the number returned
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///< from a previous call to Get(). Several calls to Del() with fractions of
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///< a previously returned Count may be made, but the total sum of all Count
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///< values must be exactly what the previous Get() has returned.
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void Clear(void);
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///< Clears the remuxer of all data it might still contain, keeping the PID
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///< settings as they are.
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static void SetBrokenLink(uchar *Data, int Length);
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};
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#endif // __REMUX_H
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