mirror of
https://github.com/vdr-projects/vdr.git
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527748826c
- Re-visited the race condition fix in the cDvbPlayer (thanks again to Andreas Schultz). - Changed the VFAT handling to allow users who normally use it but have forgotten to set it when compiling a new version of VDR to at least see their recordings made with VFAT enabled (thanks to Christian Rienecker). - Added some missing teletext PIDs (thanks to Joerg Riechardt). - Fixed PID handling for cReceiver. - Added a missing #include to ringbuffer.c (thanks to Martin Hammerschmid). - Now using CC, CFLAGS, CXX and CXXFLAGS in Makefile. - Changed the cDevice class to allow plugins to implement their own devices (see PLUGINS.html for details).
101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
/*
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* ringbuffer.h: A ring buffer
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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: ringbuffer.h 1.7 2002/08/04 10:27:30 kls Exp $
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*/
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#ifndef __RINGBUFFER_H
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#define __RINGBUFFER_H
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#include "thread.h"
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#include "tools.h"
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class cRingBuffer {
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private:
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cMutex mutex;
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cCondVar readyForPut, readyForGet;
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cMutex putMutex, getMutex;
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int size;
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protected:
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int maxFill;//XXX
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int lastPercent;
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bool statistics;//XXX
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void WaitForPut(void);
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void WaitForGet(void);
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void EnablePut(void);
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void EnableGet(void);
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virtual void Clear(void) = 0;
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virtual int Available(void) = 0;
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int Free(void) { return size - Available() - 1; }
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void Lock(void) { mutex.Lock(); }
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void Unlock(void) { mutex.Unlock(); }
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int Size(void) { return size; }
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public:
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cRingBuffer(int Size, bool Statistics = false);
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virtual ~cRingBuffer();
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};
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class cRingBufferLinear : public cRingBuffer {
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private:
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int head, tail;
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uchar *buffer;
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pid_t getThreadPid;
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public:
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cRingBufferLinear(int Size, bool Statistics = false);
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virtual ~cRingBufferLinear();
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virtual int Available(void);
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virtual void Clear(void);
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// Immediately clears the ring buffer.
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int Put(const uchar *Data, int Count);
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// Puts at most Count bytes of Data into the ring buffer.
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// Returns the number of bytes actually stored.
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int Get(uchar *Data, int Count);
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// Gets at most Count bytes of Data from the ring buffer.
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// Returns the number of bytes actually retrieved.
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};
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enum eFrameType { ftUnknown, ftVideo, ftAudio, ftDolby };
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class cFrame {
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friend class cRingBufferFrame;
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private:
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cFrame *next;
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uchar *data;
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int count;
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eFrameType type;
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int index;
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public:
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cFrame(const uchar *Data, int Count, eFrameType = ftUnknown, int Index = -1);
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~cFrame();
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const uchar *Data(void) const { return data; }
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int Count(void) const { return count; }
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eFrameType Type(void) const { return type; }
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int Index(void) const { return index; }
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};
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class cRingBufferFrame : public cRingBuffer {
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private:
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cFrame *head;
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int currentFill;
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void Delete(const cFrame *Frame);
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public:
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cRingBufferFrame(int Size, bool Statistics = false);
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virtual ~cRingBufferFrame();
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virtual int Available(void);
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virtual void Clear(void);
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// Immediately clears the ring buffer.
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bool Put(cFrame *Frame);
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// Puts the Frame into the ring buffer.
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// Returns true if this was possible.
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const cFrame *Get(void);
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// Gets the next frame from the ring buffer.
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// The actual data still remains in the buffer until Drop() is called.
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void Drop(const cFrame *Frame);
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// Drops the Frame that has just been fetched with Get().
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};
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#endif // __RINGBUFFER_H
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