video.h

MPEG2 PLAYER in linux

typedef struct macroblock {
  int mb_address;                        /* Macroblock address.              */
  int past_mb_addr;                      /* Previous mblock address.         */
  int motion_h_forw_code;                /* Forw. horiz. motion vector code. */
  unsigned int motion_h_forw_r;          /* Used in decoding vectors.        */
  int motion_v_forw_code;                /* Forw. vert. motion vector code.  */
  unsigned int motion_v_forw_r;          /* Used in decdoinge vectors.       */
  int motion_h_back_code;                /* Back horiz. motion vector code.  */
  unsigned int motion_h_back_r;          /* Used in decoding vectors.        */
  int motion_v_back_code;                /* Back vert. motion vector code.   */
  unsigned int motion_v_back_r;          /* Used in decoding vectors.        */
  unsigned int cbp;                      /* Coded block pattern.             */
  BOOLEAN mb_intra;                      /* Intracoded mblock flag.          */
  BOOLEAN bpict_past_forw;               /* Past B frame forw. vector flag.  */
  BOOLEAN bpict_past_back;               /* Past B frame back vector flag.   */
  int past_intra_addr;                   /* Addr of last intracoded mblock.  */
  int recon_right_for_prev;              /* Past right forw. vector.         */
  int recon_down_for_prev;               /* Past down forw. vector.          */
  int recon_right_back_prev;             /* Past right back vector.          */
  int recon_down_back_prev;              /* Past down back vector.           */
} Macroblock;

/* Block structure. */

typedef struct block {
  short int dct_recon[8][8];             /* Reconstructed dct coeff matrix. */
  short int dct_dc_y_past;               /* Past lum. dc dct coefficient.   */
  short int dct_dc_cr_past;              /* Past cr dc dct coefficient.     */
  short int dct_dc_cb_past;              /* Past cb dc dct coefficient.     */
} Block;

/* Video stream structure. */

typedef struct vid_stream {
  unsigned int h_size;                         /* Horiz. size in pixels.     */
  unsigned int v_size;                         /* Vert. size in pixels.      */
  unsigned int mb_height;                      /* Vert. size in mblocks.     */
  unsigned int mb_width;                       /* Horiz. size in mblocks.    */
  unsigned char aspect_ratio;                  /* Code for aspect ratio.     */
  unsigned char picture_rate;                  /* Code for picture rate.     */
  unsigned int bit_rate;                       /* Bit rate.                  */
  unsigned int vbv_buffer_size;                /* Minimum buffer size.       */
  BOOLEAN const_param_flag;                    /* Contrained parameter flag. */
  unsigned char intra_quant_matrix[8][8];      /* Quantization matrix for
						  intracoded frames.         */
  unsigned char non_intra_quant_matrix[8][8];  /* Quanitization matrix for 
						  non intracoded frames.     */
  char *ext_data;                              /* Extension data.            */
  char *user_data;                             /* User data.                 */
  GoP group;                                   /* Current group of pict.     */
  Pict picture;                                /* Current picture.           */
  Slice slice;                                 /* Current slice.             */
  Macroblock mblock;                           /* Current macroblock.        */
  Block block;                                 /* Current block.             */
  int state;                                   /* State of decoding.         */
  int bit_offset;                              /* Bit offset in stream.      */
  unsigned int *buffer;                        /* Pointer to next byte in
						  buffer.                    */
  int buf_length;                              /* Length of remaining buffer.*/
  unsigned int *buf_start;                     /* Pointer to buffer start.   */
/* Brown - beginning of added variables that used to be static or global */
  int max_buf_length;                          /* Max length of buffer.      */
  int film_has_ended;                          /* Boolean - film has ended   */
  int sys_layer;                               /* -1 uninitialized,
	                                           0 video layer,
						   1 syslayer                */
  unsigned int num_left;                       /* from ReadPacket - leftover */
  unsigned int leftover_bytes;                 /* from ReadPacket - leftover */
  int EOF_flag;                                /* stream is EOF              */
  FILE *input;                                 /* stream comes from here     */
  long seekValue;                              /* 0 no seeking
						  >0 do a seek,
						  <0 already has done seek   */
  BOOLEAN swap;                                /* from ReadFile              */
  BOOLEAN Parse_done;                          /* from read_sys              */
  int gAudioStreamID;
  int gVideoStreamID;
  int gReservedStreamID;
  int right_for,down_for;                      /* From ReconPMBlock, video.c */
  int right_half_for, down_half_for;
  unsigned int curBits;                        /* current bits               */
  int matched_depth;                           /* depth of displayed movie   */
  char *filename;                              /* Name of stream filename    */
  int ditherType;                              /* What type of dithering     */
  char *ditherFlags;                           /* flags for MB Ordered dither*/
  int totNumFrames;                            /* Total Number of Frames     */
  double realTimeStart;                        /* When did the movie start?  */
/* Brown - end of added variables */
  PictImage *past;                             /* Past predictive frame.     */
  PictImage *future;                           /* Future predictive frame.   */
  PictImage *current;                          /* Current frame.             */
  PictImage *ring[RING_BUF_SIZE];              /* Ring buffer of frames.     */
  /* x,y size of PPM output file */
  int ppm_width, ppm_height, ppm_modulus;
} VidStream;   

typedef struct {
  XImage   *ximage;
  Colormap cmap;
  Window   window;
  GC       gc;
  Display  *display;
  int      owncmFlag;
  XSizeHints hints;
  Visual   *visual;
  int      depth;
  char     *name;
  int      ditherType;
  Window   ExistingWindow;
} XInfo;

/* Declaration of global display pointer. */

#if SH_MEM
/* Shared memory flag. */
extern int shmemFlag;
#endif

/* Quiet mode flag. */
extern int quietFlag;

/* Flag controlling the "Press return" prompt */
extern int requireKeypressFlag;

/* Flag controlling speed vs. quality */
extern int qualityFlag;

/* Gamma correction stuff */
extern int gammaCorrectFlag;
extern double gammaCorrect;

/* Chroma correction stuff */
extern int chromaCorrectFlag;
extern double chromaCorrect;

/* Definition of Contant integer scale factor. */

#define CONST_BITS 13

/* Misc DCT definitions */
#define DCTSIZE		8	/* The basic DCT block is 8x8 samples */
#define DCTSIZE2	64	/* DCTSIZE squared; # of elements in a block */

#define GLOBAL			/* a function referenced thru EXTERNs */
  
typedef short DCTELEM;
typedef DCTELEM DCTBLOCK[DCTSIZE2];
 

#ifdef SH_MEM
extern int gXErrorFlag;
#endif

extern int loopFlag;
extern int noDisplayFlag;
extern int partialFlag, startFrame, endFrame;

#ifdef ANALYSIS
extern unsigned int bitCount;
extern int showEachFlag;
extern unsigned int cacheHit[8][8];
extern unsigned int cacheMiss[8][8];
#endif

#if !defined(__MIPSEL__) && (defined(MIPSEL) || defined(__MIPSEL) || defined(__MIPSEL__) || defined(__mipsel) || defined(__mipsel__))
#define __MIPSEL__ 1
#endif

#if !defined(__MIPSEB__) && (defined(MIPSEB) || defined(__MIPSEB) || defined(__MIPSEB__) || defined(__mipseb) || defined(__mipseb__))
#define __MIPSEB__ 1
#endif

#if !defined(__SPARC__) && (defined(SPARC) || defined(__SPARC) || defined(__SPARC__) || defined(__sparc) || defined(__sparc__))
#define __SPARC__ 1
#endif

#if !defined(__alpha__) && (defined(ALPHA) || defined(__ALPHA) || defined(__ALPHA__) || defined(__alpha))
#define __alpha__ 1
#endif

#if !defined(__680x0__) && (defined(__680x0) || defined(__680x0__))
#define __680x0__ 1
#endif

#if !defined(__AIX__) && (defined(AIX) || defined(_AIX) || defined(__AIX) || defined(__AIX__))
#define __AIX__ 1
#endif

#if !defined(__RS6000__) && (defined(__AIX__) || defined(RS6000) || defined(_RS6000) || defined(__RS6000) || defined(__RS6000__))
#define __RS6000__ 1
#endif

#if !defined(__HPUX__) && (defined(HPUX) || defined(_HPUX) || defined(__HPUX) || defined(__HPUX__))
#define __HPUX__ 1
#endif
#if !defined(__HPUX__) && (defined(hpux) || defined(_hpux) || defined(__hpux) || defined(__hpux__))
#define __HPUX__ 1
#endif

#if !defined(__VAX__) && (defined(VAX) || defined (__VAX))
#define __VAX__ 1
#endif

#if !defined(__SCO__) && (defined(SCO) || defined(__SCO) || defined(sco) || defined(__sco__))
#define __SCO__ 1
#endif

#if defined(__i386__) || defined(__VAX__) || defined(__MIPSEL__) || defined(__alpha__) || defined(__SCO__)
#undef  BIG_ENDIAN_ARCHITECTURE
#define LITTLE_ENDIAN_ARCHITECTURE 1
#endif

#if defined(__RS6000__) || defined(__SPARC__) || defined(__680x0__) || defined(__HPUX__) || defined(__MIPSEB__) || defined(convex) || defined(__convex__)
#undef  LITTLE_ENDIAN_ARCHITECTURE
#define BIG_ENDIAN_ARCHITECTURE 1
#endif

#if !defined(LITTLE_ENDIAN_ARCHITECTURE) && !defined(BIG_ENDIAN_ARCHITECTURE)
Error: Unknown endianism of architecture
#endif

#ifdef __alpha__
#define SIXTYFOUR_BIT
#endif
#endif /* video.h already included */