codec_internal.h

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  unsigned char LoopFilterLimitValues[Q_TABLE_SIZE];
} codec_setup_info;

/** Decoder (Playback) instance -- installed in a theora_state */
typedef struct PB_INSTANCE {
  oggpack_buffer *opb;
  theora_info     info;
  /* how far do we shift the granulepos to seperate out P frame counts? */
  int             keyframe_granule_shift;


  /***********************************************************************/
  /* Decoder and Frame Type Information */

  int           DecoderErrorCode;
  int           FramesHaveBeenSkipped;

  int           PostProcessEnabled;
  ogg_uint32_t  PostProcessingLevel;    /* Perform post processing */

  /* Frame Info */
  CODING_MODE   CodingMode;
  unsigned char FrameType;
  unsigned char KeyFrameType;
  ogg_uint32_t  QualitySetting;
  ogg_uint32_t  FrameQIndex;            /* Quality specified as a
                                           table index */
  ogg_uint32_t  ThisFrameQualityValue;  /* Quality value for this frame  */
  ogg_uint32_t  LastFrameQualityValue;  /* Last Frame's Quality */
  ogg_int32_t   CodedBlockIndex;        /* Number of Coded Blocks */
  ogg_uint32_t  CodedBlocksThisFrame;   /* Index into coded blocks */
  ogg_uint32_t  FrameSize;              /* The number of bytes in the frame. */

  /**********************************************************************/
  /* Frame Size & Index Information */

  ogg_uint32_t  YPlaneSize;
  ogg_uint32_t  UVPlaneSize;
  ogg_uint32_t  YStride;
  ogg_uint32_t  UVStride;
  ogg_uint32_t  VFragments;
  ogg_uint32_t  HFragments;
  ogg_uint32_t  UnitFragments;
  ogg_uint32_t  YPlaneFragments;
  ogg_uint32_t  UVPlaneFragments;

  ogg_uint32_t  ReconYPlaneSize;
  ogg_uint32_t  ReconUVPlaneSize;

  ogg_uint32_t  YDataOffset;
  ogg_uint32_t  UDataOffset;
  ogg_uint32_t  VDataOffset;
  ogg_uint32_t  ReconYDataOffset;
  ogg_uint32_t  ReconUDataOffset;
  ogg_uint32_t  ReconVDataOffset;
  ogg_uint32_t  YSuperBlocks;   /* Number of SuperBlocks in a Y frame */
  ogg_uint32_t  UVSuperBlocks;  /* Number of SuperBlocks in a U or V frame */
  ogg_uint32_t  SuperBlocks;    /* Total number of SuperBlocks in a
                                   Y,U,V frame */

  ogg_uint32_t  YSBRows;        /* Number of rows of SuperBlocks in a
                                   Y frame */
  ogg_uint32_t  YSBCols;        /* Number of cols of SuperBlocks in a
                                   Y frame */
  ogg_uint32_t  UVSBRows;       /* Number of rows of SuperBlocks in a
                                   U or V frame */
  ogg_uint32_t  UVSBCols;       /* Number of cols of SuperBlocks in a
                                   U or V frame */

  ogg_uint32_t  YMacroBlocks;   /* Number of Macro-Blocks in Y component */
  ogg_uint32_t  UVMacroBlocks;  /* Number of Macro-Blocks in U/V component */
  ogg_uint32_t  MacroBlocks;    /* Total number of Macro-Blocks */

  /**********************************************************************/
  /* Frames  */
  YUV_BUFFER_ENTRY *ThisFrameRecon;
  YUV_BUFFER_ENTRY *GoldenFrame;
  YUV_BUFFER_ENTRY *LastFrameRecon;
  YUV_BUFFER_ENTRY *PostProcessBuffer;

  /**********************************************************************/
  /* Fragment Information */
  ogg_uint32_t  *pixel_index_table;        /* start address of first
                                              pixel of fragment in
                                              source */
  ogg_uint32_t  *recon_pixel_index_table;  /* start address of first
                                              pixel in recon buffer */

  unsigned char *display_fragments;        /* Fragment update map */
  unsigned char *skipped_display_fragments;/* whether fragment YUV
                                              Conversion and update is to be
                                              skipped */
  ogg_int32_t   *CodedBlockList;           /* A list of fragment indices for
                                              coded blocks. */
  MOTION_VECTOR *FragMVect;                /* fragment motion vectors */

  ogg_uint32_t  *FragTokenCounts;          /* Number of tokens per fragment */
  ogg_uint32_t  (*TokenList)[128];         /* Fragment Token Pointers */

  ogg_int32_t   *FragmentVariances;
  ogg_uint32_t  *FragQIndex;               /* Fragment Quality used in
                                              PostProcess */
  Q_LIST_ENTRY (*PPCoefBuffer)[64];        /* PostProcess Buffer for
                                              coefficients data */

  unsigned char *FragCoeffs;                /* # of coeffs decoded so far for
                                               fragment */
  unsigned char *FragCoefEOB;               /* Position of last non 0 coef
                                                within QFragData */
  Q_LIST_ENTRY (*QFragData)[64];            /* Fragment Coefficients
                                               Array Pointers */
  CODING_MODE   *FragCodingMethod;          /* coding method for the
                                               fragment */

  /***********************************************************************/
  /* pointers to addresses used for allocation and deallocation the
      others are rounded up to the nearest 32 bytes */

  COEFFNODE     *_Nodes;
  ogg_uint32_t  *transIndex;                    /* ptr to table of
                                                   transposed indexes */

  /***********************************************************************/
  ogg_int32_t    bumpLast;

  /* Macro Block and SuperBlock Information */
  ogg_int32_t  (*BlockMap)[4][4];               /* super block + sub macro
                                                   block + sub frag ->
                                                   FragIndex */

  /* Coded flag arrays and counters for them */
  unsigned char *SBCodedFlags;
  unsigned char *SBFullyFlags;
  unsigned char *MBCodedFlags;
  unsigned char *MBFullyFlags;

  /**********************************************************************/
  ogg_uint32_t   EOB_Run;

  COORDINATE    *FragCoordinates;
  MOTION_VECTOR  MVector;
  ogg_int32_t    ReconPtr2Offset;       /* Offset for second reconstruction
                                           in half pixel MC */
  Q_LIST_ENTRY  *quantized_list;
  ogg_int16_t   *ReconDataBuffer;
  Q_LIST_ENTRY   InvLastIntraDC;
  Q_LIST_ENTRY   InvLastInterDC;
  Q_LIST_ENTRY   LastIntraDC;
  Q_LIST_ENTRY   LastInterDC;

  ogg_uint32_t   BlocksToDecode;        /* Blocks to be decoded this frame */
  ogg_uint32_t   DcHuffChoice;          /* Huffman table selection variables */
  unsigned char  ACHuffChoice;
  ogg_uint32_t   QuadMBListIndex;

  ogg_int32_t    ByteCount;

  ogg_uint32_t   bit_pattern;
  unsigned char  bits_so_far;
  unsigned char  NextBit;
  ogg_int32_t    BitsLeft;

  ogg_int16_t   *DequantBuffer;

  ogg_int32_t    fp_quant_InterUV_coeffs[64];
  ogg_int32_t    fp_quant_InterUV_round[64];
  ogg_int32_t    fp_ZeroBinSize_InterUV[64];

  ogg_int16_t   *TmpReconBuffer;
  ogg_int16_t   *TmpDataBuffer;

  /* Loop filter bounding values */
  unsigned char  LoopFilterLimits[Q_TABLE_SIZE];
  ogg_int32_t    FiltBoundingValue[512];

  /* Dequantiser and rounding tables */
  ogg_uint32_t   QThreshTable[Q_TABLE_SIZE];
  Q_LIST_ENTRY   DcScaleFactorTable[Q_TABLE_SIZE];
  Q_LIST_ENTRY   Y_coeffs[64];
  Q_LIST_ENTRY   U_coeffs[64];
  Q_LIST_ENTRY   V_coeffs[64];
  Q_LIST_ENTRY   InterY_coeffs[64];
  Q_LIST_ENTRY   InterU_coeffs[64];
  Q_LIST_ENTRY   InterV_coeffs[64];
  Q_LIST_ENTRY  *dequant_Y_coeffs;
  Q_LIST_ENTRY  *dequant_U_coeffs;
  Q_LIST_ENTRY  *dequant_V_coeffs;
  Q_LIST_ENTRY  *dequant_InterY_coeffs;
  Q_LIST_ENTRY  *dequant_InterU_coeffs;
  Q_LIST_ENTRY  *dequant_InterV_coeffs;
  Q_LIST_ENTRY  *dequant_coeffs;        /* currently active quantizer */
  unsigned int   zigzag_index[64];
  ogg_int32_t    quant_Y_coeffs[64];
  ogg_int32_t    quant_UV_coeffs[64];
  ogg_int32_t    fp_quant_Y_coeffs[64]; /* used in reiniting quantizers */

  HUFF_ENTRY    *HuffRoot_VP3x[NUM_HUFF_TABLES];
  ogg_uint32_t  *HuffCodeArray_VP3x[NUM_HUFF_TABLES];
  unsigned char *HuffCodeLengthArray_VP3x[NUM_HUFF_TABLES];
  const unsigned char *ExtraBitLengths_VP3x;

  /* Quantiser and rounding tables */
  ogg_int32_t    fp_quant_UV_coeffs[64];
  ogg_int32_t    fp_quant_Inter_coeffs[64];
  ogg_int32_t    fp_quant_Y_round[64];
  ogg_int32_t    fp_quant_UV_round[64];
  ogg_int32_t    fp_quant_Inter_round[64];
  ogg_int32_t    fp_ZeroBinSize_Y[64];
  ogg_int32_t    fp_ZeroBinSize_UV[64];
  ogg_int32_t    fp_ZeroBinSize_Inter[64];
  ogg_int32_t   *fquant_coeffs;
  ogg_int32_t   *fquant_round;
  ogg_int32_t   *fquant_ZbSize;

  /* Predictor used in choosing entropy table for decoding block patterns. */
  unsigned char  BlockPatternPredictor;

  short          Modifier[4][512];
  short         *ModifierPointer[4];

  unsigned char *DataOutputInPtr;

  DspFunctions   dsp;  /* Selected functions for this platform */

} PB_INSTANCE;

/* Encoder (Compressor) instance -- installed in a theora_state */
typedef struct CP_INSTANCE {

  /* Compressor Configuration */
  SCAN_CONFIG_DATA ScanConfig;
  CONFIG_TYPE2     Configuration;
  int              GoldenFrameEnabled;
  int              InterPrediction;
  int              MotionCompensation;

  ogg_uint32_t     LastKeyFrame ;
  ogg_int32_t      DropCount ;
  ogg_int32_t      MaxConsDroppedFrames ;
  ogg_int32_t      DropFrameTriggerBytes;
  int              DropFrameCandidate;

  /* Compressor Statistics */
  double           TotErrScore;
  ogg_int64_t      KeyFrameCount; /* Count of key frames. */
  ogg_int64_t      TotKeyFrameBytes;
  ogg_uint32_t     LastKeyFrameSize;
  ogg_uint32_t     PriorKeyFrameSize[KEY_FRAME_CONTEXT];
  ogg_uint32_t     PriorKeyFrameDistance[KEY_FRAME_CONTEXT];
  ogg_int32_t      FrameQuality[6];
  int              DecoderErrorCode; /* Decoder error flag. */
  ogg_int32_t      ThreshMapThreshold;
  ogg_int32_t      TotalMotionScore;
  ogg_int64_t      TotalByteCount;
  ogg_int32_t      FixedQ;

  /* Frame Statistics  */
  signed char      InterCodeCount;
  ogg_int64_t      CurrentFrame;
  ogg_int64_t      CarryOver ;
  ogg_uint32_t     LastFrameSize;
  ogg_uint32_t     FrameBitCount;
  int              ThisIsFirstFrame;
  int              ThisIsKeyFrame;

  ogg_int32_t      MotionScore;
  ogg_uint32_t     RegulationBlocks;
  ogg_int32_t      RecoveryMotionScore;
  int              RecoveryBlocksAdded ;
  double           ProportionRecBlocks;
  double           MaxRecFactor ;

  /* Rate Targeting variables. */
  ogg_uint32_t     ThisFrameTargetBytes;
  double           BpbCorrectionFactor;

  /* Up regulation variables */
  ogg_uint32_t     FinalPassLastPos;  /* Used to regulate a final
                                         unrestricted high quality
                                         pass. */
  ogg_uint32_t     LastEndSB;         /* Where we were in the loop
                                         last time. */