MythTV: streamingringbuffer.h Source File

00001 #ifndef STREAMINGRINGBUFFER_H
00002 #define STREAMINGRINGBUFFER_H
00003 
00004 #include "ringbuffer.h"
00005 
00006 extern "C" {
00007 #include "libavformat/avformat.h"
00008 #include "libavformat/url.h"
00009 }
00010 
00011 class StreamingRingBuffer : public RingBuffer
00012 {
00013   public:
00014     StreamingRingBuffer(const QString &lfilename);
00015     virtual ~StreamingRingBuffer();
00016 
00017     virtual bool IsOpen(void) const;
00018     virtual long long GetReadPosition(void) const;
00019     virtual bool OpenFile(const QString &lfilename,
00020                           uint retry_ms = kDefaultOpenTimeout);
00021     virtual long long Seek(long long pos, int whence, bool has_lock);
00022     virtual long long GetRealFileSize(void) const;
00023     virtual bool IsStreamed(void)       { return m_streamed;   }
00024     virtual bool IsSeekingAllowed(void) { return m_allowSeeks; }
00025     virtual bool IsBookmarkAllowed(void) { return false; }
00026 
00027   protected:
00028     virtual int safe_read(void *data, uint sz);
00029 
00030   private:
00031     URLContext *m_context;
00032     bool        m_streamed;
00033     bool        m_allowSeeks;
00034 };
00035 
00036 #endif // STREAMINGRINGBUFFER_H