1 files changed, 96 insertions, 0 deletions
diff --git a/mpeglib/lib/mpegplay/decoderClass.h b/mpeglib/lib/mpegplay/decoderClass.h
new file mode 100644
index 00000000..2e969edc
--- /dev/null
+++ b/mpeglib/lib/mpegplay/decoderClass.h
@@ -0,0 +1,96 @@
+/*
+  class for decoders
+  Copyright (C) 1999  Martin Vogt
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation.
+
+  For more information look at the file COPYRIGHT in this package
+
+ */
+
+
+#ifndef __DECODERCLASS_H
+#define __DECODERCLASS_H
+
+
+ 
+#include "videoDecoder.h"
+#include "mpegVideoStream.h"
+#include "decoderTables.h"
+#include "slice.h"
+#include "proto.h"
+#include "../util/mmx/mmx.h"
+#include "mmxidct.h"
+#include "picture.h"
+
+/* Special values for DCT Coefficients */
+#define END_OF_BLOCK 62
+#define ESCAPE 61
+
+
+/* DCT coeff tables. */
+#define RUN_MASK 0xfc00
+#define LEVEL_MASK 0x03f0
+#define NUM_MASK 0x000f
+#define RUN_SHIFT 10
+#define LEVEL_SHIFT 4
+#define RUNTYPE char
+
+class DecoderClass {
+
+  int lmmx;
+  int zigzag_direct[256];
+
+  /* Block structure. */
+
+  short int dct_recon[8][8];             /* Reconstructed dct coeff matrix. */
+  int dct_dc_y_past;                     /* Past lum. dc dct coefficient.   */
+  int dct_dc_cr_past;                    /* Past cr dc dct coefficient.     */
+  int dct_dc_cb_past;                    /* Past cb dc dct coefficient.     */
+  short int *reconptr;                   /* reconptr = dct_recon[0];        */
+
+  class VideoDecoder* vid_stream;
+  class MpegVideoStream* mpegVideoStream;
+ public:
+  DecoderClass(class VideoDecoder* vid_stream,
+	       class MpegVideoStream* mpegVideoStream);
+  ~DecoderClass();
+  int decodeDCTDCSizeLum();
+  int decodeDCTDCSizeChrom();
+  int decodeMotionVectors();
+  int decodeCBP();
+
+  inline short int* getDCT() { return ((short int*) &(dct_recon[0][0]));}
+  void resetDCT();
+
+  void decodeMBTypeB(int& quant,int& motion_fwd,
+		     int& motion_bwd,int& pat,int& intra);
+
+  void decodeMBTypeI(int& quant,int& motion_fwd,
+		     int& motion_bwd,int& pat,int& intra);
+  
+  void decodeMBTypeP(int& quant,int& motion_fwd,
+		     int& motion_bwd,int& pat,int& intra);
+
+  void ParseReconBlock(int& n,int& mb_intra,unsigned int& quant_scale,
+		       int& lflag,
+		       unsigned int* iqmatrixptr,
+		       unsigned int* niqmatrixptr);
+  int decodeMBAddrInc();
+
+
+  void print();
+
+ private:
+
+
+  inline void decodeDCTCoeff(unsigned short int* dct_coeff_tbl,
+			     unsigned RUNTYPE& run,
+			     int& level);
+
+ 
+
+};
+#endif