include/lib/codecs/codecmpg.h

   1 #ifndef DISABLE_FILE
   2
   3 #ifndef __lib_codecs_codecmpg_h
   4 #define __lib_codecs_codecmpg_h
   5
   6 #include <map>
   7 #include <set>
   8 #include <lib/base/buffer.h>
   9 #include <lib/codecs/codec.h>
  10
  11 struct syncAudioPacket
  12 {
  13         unsigned int pts;
  14         int len;
  15         __u8 *data;
  16 };
  17
  18 // mpeg-2 ps demuxer.
  19 class eDemux: public eAudioDecoder
  20 {
  21 protected:
  22         eIOBuffer &input, &video, &audio;
  23         int minFrameLength;
  24         int mpegtype;
  25         unsigned int curAudioStreamID;
  26
  27         unsigned long last, remaining;
  28         unsigned long getLong();
  29         void refill();
  30         unsigned long getBits(unsigned int num);
  31         void syncBits();
  32         std::map<int,int> audiostreams;
  33         std::set<unsigned char> videostreams;
  34         int synced;
  35         int fd;
  36         std::list<syncAudioPacket> syncbuffer;
  37         unsigned char *sheader;
  38         unsigned int sheader_len;
  39 public:
  40         void extractSequenceHeader( unsigned char *buf, unsigned int len );
  41         eDemux(eIOBuffer &input, eIOBuffer &video, eIOBuffer &audio, int fd);
  42         ~eDemux();
  43         virtual int decodeMore(int last, int maxsamples, Signal1<void, unsigned int>*newastreamid=0 )=0; // returns number of samples(!) written to IOBuffer (out)
  44         void resync(); // clear (secondary) decoder buffers
  45         int getMinimumFramelength();
  46         int getAverageBitrate();
  47         void setAudioStream( unsigned int id );
  48 };
  49
  50 // mpeg-2 ps demuxer.
  51 class eMPEGDemux: public eDemux
  52 {
  53 public:
  54         eMPEGDemux(eIOBuffer &input, eIOBuffer &video, eIOBuffer &audio, int fd)
  55                 :eDemux(input, video, audio, fd)
  56         {}
  57         int decodeMore(int last, int maxsamples, Signal1<void, unsigned int>*newastreamid=0 ); // returns number of samples(!) written to IOBuffer (out)
  58 };
  59
  60 // PVA demuxer.
  61 class ePVADemux: public eDemux
  62 {
  63 public:
  64         ePVADemux(eIOBuffer &input, eIOBuffer &video, eIOBuffer &audio, int fd)
  65                 :eDemux(input, video, audio, fd)
  66         {}
  67         int decodeMore(int last, int maxsamples, Signal1<void, unsigned int>*newastreamid=0 ); // returns number of samples(!) written to IOBuffer (out)
  68 };
  69
  70 #endif
  71
  72 #endif //DISABLE_FILE