1 /*

     2 * Copyright (c) 2010 Ixonos Plc.

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - Initial contribution

    11 *

    12 * Contributors:

    13 * Ixonos Plc

    14 *

    15 * Description:  

    16 * Header file for definitions and common structures for 

    17 * compressed domain transcoding.

    18 *

    19 */

    20 

    21 

    22 #ifndef INCLUDE_COMMON

    23 #define INCLUDE_COMMON

    24 

    25 /*

    26  * Includes

    27  */

    28 # include "epoclib.h"

    29 

    30 /*

    31  * Defines

    32  */

    33 

    34 /* General */

    35 #define E_SUCCESS            0

    36 #define E_FAILURE         (-1)

    37 #define NULL                 0

    38 

    39 /* Data */

    40 #define MB_SIZE 16

    41 #define BLOCK_SIZE 8

    42 #define LOG_BLOCK_WIDTH 3

    43 #define BLOCK_COEFF_SIZE 64

    44  

    45 /* Bit stream formating */

    46 #define MOTION_MARKER 0x1F001

    47 #define DC_MARKER     0x6B001

    48 #define DC_MARKER_LENGTH 19

    49 #define MOTION_MARKER_LENGTH 17 

    50 

    51 /* Codes */

    52 #define VISUAL_OBJECT_SEQUENCE_START_CODE 0x1B0

    53 #define VISUAL_OBJECT_SEQUENCE_END_CODE   0x1B1

    54 #define VIDEO_OBJECT_START_CODE           0x0100

    55 #define VIDEO_OBJECT_LAYER_START_CODE     0x120

    56 #define USER_DATA_START_CODE              0x1B2

    57 #define GROUP_OF_VOP_START_CODE           0x1B3

    58 #define VISUAL_OBJECT_START_CODE          0x1B5

    59 #define VOP_START_CODE                    0x1B6

    60 #define PROFILE_LEVEL                     0x3

    61 #define VISUAL_OBJECT                     0x1

    62 #define SIMPLE_OBJECT                     0x1

    63 #define ASPECT_RATIO_INFO                 0x1

    64 #define CHROMA_FORMAT                     0x1

    65 #define RECTANGULAR                       0x0

    66 #define MARKER_BIT                          1

    67 #define SHORT_VIDEO_START_MARKER          0x20

    68 #define SHORT_VIDEO_END_MARKER            0x3F

    69 #define GOB_RESYNC_MARKER                 0x01

    70 

    71 /* Quantization */

    72 #define	MAX_SAT_VAL_SVH		127

    73 #define	MIN_SAT_VAL_SVH		-127

    74 #define	FIXED_PT_BITS		16

    75 

    76 /* Variable length encoding */

    77 #define NOT_VALID 65535

    78 #define ESCAPE_CODE_VLC  0x03

    79 #define ESCAPE_CODE_LENGTH_VLC 7

    80 

    81 /* Constant multipliers */

    82 #define TAN_PI_BY_8     27145

    83 #define TAN_PI_BY_16    13036

    84 #define TAN_3PI_BY_16   43789

    85 #define COS_PI_BY_4     46340 

    86 #define COS_PI_BY_8     60546 

    87 #define COS_PI_BY_16    64276 

    88 #define COS_3PI_BY_16   54490

    89 

    90 /* Shift amount and corresponding rounding constants for DCT */

    91 #define DCT_PRECISION            16

    92 #define DCT_ROUND                0      /*32768*/   /* 2^(DCT_PRECISION - 1) */ 

    93 #define DCT_KEPT_PRECISION       1

    94 #define DCT_PRECISION_PLUS_KEPT  19      /* DCT_PRECISION + 2 + DCT_KEPT_PRECISION */

    95 #define DCT_ROUND_PLUS_KEPT       0 /*262144*/  /* 2^(DCT_PRECISION_PLUS_KEPT - 1) */ 

    96 

    97 

    98 /* Macros */

    99 #define ABS(x)   ((x) >= 0   ? (x) :-(x))

   100 

   101 /* 

   102  * Enumerations 

   103  */

   104 enum {

   105 	INTRA,

   106 	INTER

   107 };

   108 

   109 enum {

   110 	ONEMV, 

   111 	FOURMV

   112 };

   113 

   114 enum {

   115 	I_VOP,

   116 	P_VOP

   117 };

   118 

   119 enum {

   120 	H263,

   121 	MPEG4

   122 };

   123 

   124 enum {

   125 	OFF, 

   126 	ON

   127 };

   128 

   129 enum {

   130 	CODE_FOUND, 

   131 	CODE_NOT_FOUND

   132 };

   133 

   134 

   135 /*

   136  * Structs and typedefs

   137  */

   138 typedef unsigned char        tBool;

   139 /* Typedef for 8 bit pixel */

   140 typedef  u_int8   tPixel;

   141 

   142 /* Macroblock position in yuv frame data */

   143 typedef struct{

   144 	tPixel *yFrame;

   145 	u_int32 yFrameWidth;

   146 	tPixel *uFrame;

   147 	u_int32 uFrameWidth;

   148 	tPixel *vFrame;

   149 	u_int32 vFrameWidth;

   150 } tMBPosInYUVFrame;

   151 

   152 /* Motion vector information */

   153 typedef struct{

   154     int16   mvx;

   155     int16   mvy;

   156     u_int32  SAD;

   157 } tMotionVector;

   158 

   159 /* Macroblock information */

   160 typedef struct

   161 {

   162     int16   MV[4][2];

   163     u_int32  SAD;

   164     int16   QuantScale;

   165     int16   CodedBlockPattern;

   166 	int16   dQuant;

   167     int16   SkippedMB;

   168 } tMBInfo;

   169 

   170 /* Macroblock position */

   171 typedef struct{

   172     u_int32  x;

   173     u_int32  y;

   174     int32   LeftBound;

   175     int32   RightBound;

   176     int32   TopBound;

   177     int32   BottomBound;

   178 } tMBPosition;

   179 

   180 /* Macroblock data (16x16 Y, 8x8 UV) */

   181 typedef struct{

   182     int16   Data[384];

   183 } tMacroblockData;

   184 

   185 #endif  /* INCLUDE_COMMON */