h261type.h
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
-
- #ifndef _INC_H261TYPE
- #define _INC_H261TYPE 1
- #include "machine.h"
- //typedef signed char S8; // 8 bits signed
- //typedef unsigned char U8; // 8 bits unsigned
- //typedef short int S16; // 16 bits signed
- //typedef unsigned short int U16; // 16 bits unsigned
- //typedef long int S32; // 32 bits signed
- //typedef unsigned long int U32; // 32 bits unsigned
- //typedef unsigned char PIXEL; // 8 bits unsigned
- /* SYMBOL - Symbol descriptor */
- typedef struct {
- S8 value;
- S8 type;
- } SYMBOL;
- /* BS_PTR - Pointer to current position in bitstream */
- typedef struct {
- U8 *byteptr; // Points to current byte
- int bitptr; // Number of bits already consumed/processed in
- // current byte, i.e., points at bit (7-bitptr)
- } BS_PTR;
- /* BLOCK_DESCR - Descriptor for symbols in a block */
- typedef struct {
- SYMBOL *sym; // Points to array of run-level pairs
- int nsym; // Number of run-level pairs in array
- int intraVar; // Block variance
- int predErr; // Prediction error (undefined for INTRA blocks)
- } BLOCK_DESCR;
- /* MACROBLOCK_DESCR - 256-byte descriptor for MB, that consists of 6 blocks */
- /*** NOTE! This structure MUST be 256 bytes in size for efficiency. ***/
- typedef struct {
- BLOCK_DESCR block[6];
- BLOCK_DESCR Bblock[6]; // Descriptors for B-blocks
- U32 codedCount; // Number of times macroblock has been coded
- int lumaVar; // Average of 4 luminance block variances (intraVar)
- int dquant; // H.263: differential value for quant
- int quality; // Quality index used to select "quant" and HF attenuation
- U8 mtype;
- U8 active; // Indicates active part of picture for INTRA blocks;
- // Undefined for other MTYPEs
- U8 quant; // Quantizer step
- U8 cbp; // Coded block pattern
- U8 x; // mb_column
- U8 y; // mb_row
- S8 mv_x; // Hor. component of motion vector
- S8 mv_y; // Vert. component of motion vector
- S8 mvd_x; // Hor. motion vector difference
- S8 mvd_y; // Vert. motion vector difference
- U8 modB; // Mode for B-blocks; defined for PB frames only
- U8 intra_mode; // Intra prediction mode; defined for advanced intra mode only
- S8 blkMvX[4]; // Hor. motion for 8x8 blocks; defined when mtype=INTER4V
- S8 blkMvY[4]; // Vert. motion for 8x8 blocks
- S8 blkDiffX[4]; // Hor. mv diff. for 8x8 blocks (mtype=INTER4V)
- S8 blkDiffY[4]; // Vert. mv difference for 8x8 blocks
- U8 Bquant; // quant for B-frame
- U8 cbpB; // Coded block pattern for B-blocks; defined if modB > 1
- S8 mvdB_x; // Mv data for B-macroblock; defined if modB > 0
- S8 mvdB_y;
- S8 blkMvFx[4]; // Hor. motion for forward prediction of B-frame
- S8 blkMvFy[4]; // Vert. motion for forward prediction of B-frame
- S8 blkMvBx[4]; // Hor. motion for backward prediction of B-frame
- S8 blkMvBy[4]; // Vert. motion for backward prediction of B-frame
- } MACROBLOCK_DESCR;
- /* GOB_DESCR - Descriptor for Group Of Block */
- typedef struct {
- int gn; // GOB Number
- int next_gn; // Next GOB Number
- int gquant;
- int gei;
- int num_mb; // Number of macroblocks
- MACROBLOCK_DESCR *mb; // Origin of macroblock array
- int first_col; // First MB in GOB
- int first_row;
- int mb_width; // MBs per row
- int mb_offset; // Row offset
- int num_gspare;
- S8 *gspare;
- } GOB_DESCR;
- /* ENCTABENTRY - Variable length code */
- typedef struct {
- U32 code; // Variable length code, starting in MSB; max 25 bits
- int len; // of bits
- } ENCTABENTRY;
- #define DCT_8X8_SCALE 2 /* DCT_SCALE**2 */
- #define QTABLE_MAX_MAGN (2048*DCT_8X8_SCALE) /* 2048 * DCT_SCALE**2 */
- #define MAX_Q_INDEX 127
- /* Largest qz output */
- /* Dimensions for Qtab */
- #define QUALITY_STEPS (31)
- #define MASKING_STEPS (1)
- /* Structures for table-based quantization */
- typedef struct QTab {
- S8 qVal[(1+2*QTABLE_MAX_MAGN)];
- } QTab;
- typedef struct QTab *pQTab;
-
- typedef struct QMatrix {
- int maxCoeff; // last coeff to quantize [1,64]
- pQTab qCoeffTabs[64]; // tables
- } QMatrix;
- typedef struct QMatrix *pQMatrix;
- // typedef for region-of-interest rectangle
- typedef struct {
- S32 left;
- S32 top;
- S32 right;
- S32 bottom;
- } ROI_RECT;
- #endif