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      1 /* ------------------------------------------------------------------
      2  * Copyright (C) 1998-2009 PacketVideo
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
     13  * express or implied.
     14  * See the License for the specific language governing permissions
     15  * and limitations under the License.
     16  * -------------------------------------------------------------------
     17  */
     18 #ifndef _PVDECDEF_H_
     19 #define _PVDECDEF_H_
     20 
     21 #include "mp4dec_api.h"
     22 
     23 typedef enum
     24 {
     25     PV_SUCCESS,
     26     PV_FAIL,
     27     PV_MB_STUFFING,         /* hit Macroblock_Stuffing */
     28     PV_END_OF_VOP,          /* hit End_of_Video_Object_Plane */
     29     PV_END_OF_MB            /* hit End_of_Macroblock */
     30 #ifdef PV_TOLERATE_VOL_ERRORS
     31     , PV_BAD_VOLHEADER
     32 #endif
     33 } PV_STATUS;
     34 
     35 typedef uint8 PIXEL;
     36 typedef int16 MOT;   /*  : "int" type runs faster on RISC machine */
     37 
     38 #define TRUE    1
     39 #define FALSE   0
     40 
     41 #define PV_ABS(x)       (((x)<0)? -(x) : (x))
     42 #define PV_SIGN(x)      (((x)<0)? -1 : 1)
     43 #define PV_SIGN0(a)     (((a)<0)? -1 : (((a)>0) ? 1 : 0))
     44 #define PV_MAX(a,b)     ((a)>(b)? (a):(b))
     45 #define PV_MIN(a,b)     ((a)<(b)? (a):(b))
     46 #define PV_MEDIAN(A,B,C) ((A) > (B) ? ((A) < (C) ? (A) : (B) > (C) ? (B) : (C)): (B) < (C) ? (B) : (C) > (A) ? (C) : (A))
     47 /* You don't want to use ((x>UB)?UB:(x<LB)?LB:x) for the clipping */
     48 /*    because it will use one extra comparison if the compiler is */
     49 /*    not well-optimized.    04/19/2000.                        */
     50 #define CLIP_THE_RANGE(x,LB,UB) if (x<LB) x = LB; else if (x>UB) x = UB
     51 
     52 #define MODE_INTRA      0x08 //01000
     53 #define MODE_INTRA_Q    0x09 //01001
     54 #define MODE_SKIPPED    0x10 //10000
     55 #define MODE_INTER4V    0x14 //10100
     56 #define MODE_INTER      0x16 //10110
     57 #define MODE_INTER_Q    0x17 //10111
     58 #define MODE_INTER4V_Q  0x15 //10101
     59 #define INTER_1VMASK    0x2
     60 #define Q_MASK          0x1
     61 #define INTRA_MASK      0x8
     62 #define INTER_MASK      0x4
     63 
     64 
     65 #define I_VOP       0
     66 #define P_VOP       1
     67 #define B_VOP       2
     68 
     69 #define LUMINANCE_DC_TYPE   1
     70 #define CHROMINANCE_DC_TYPE 2
     71 
     72 #define START_CODE_LENGTH       32
     73 
     74 /* 11/30/98 */
     75 #define NoMarkerFound -1
     76 #define FoundRM     1   /* Resync Marker */
     77 #define FoundVSC    2   /* VOP_START_CODE. */
     78 #define FoundGSC    3   /* GROUP_START_CODE */
     79 #define FoundEOB    4   /* EOB_CODE */
     80 
     81 /* PacketVideo "absolution timestamp" object.   06/13/2000 */
     82 #define PVTS_START_CODE         0x01C4
     83 #define PVTS_START_CODE_LENGTH  32
     84 
     85 /* session layer and vop layer start codes */
     86 
     87 #define VISUAL_OBJECT_SEQUENCE_START_CODE   0x01B0
     88 #define VISUAL_OBJECT_SEQUENCE_END_CODE     0x01B1
     89 
     90 #define VISUAL_OBJECT_START_CODE   0x01B5
     91 #define VO_START_CODE           0x8
     92 #define VO_HEADER_LENGTH        32      /* lengtho of VO header: VO_START_CODE +  VO_ID */
     93 
     94 #define SOL_START_CODE          0x01BE
     95 #define SOL_START_CODE_LENGTH   32
     96 
     97 #define VOL_START_CODE 0x12
     98 #define VOL_START_CODE_LENGTH 28
     99 
    100 #define VOP_START_CODE 0x1B6
    101 #define VOP_START_CODE_LENGTH   32
    102 
    103 #define GROUP_START_CODE    0x01B3
    104 #define GROUP_START_CODE_LENGTH  32
    105 
    106 #define VOP_ID_CODE_LENGTH      5
    107 #define VOP_TEMP_REF_CODE_LENGTH    16
    108 
    109 #define USER_DATA_START_CODE        0x01B2
    110 #define USER_DATA_START_CODE_LENGTH 32
    111 
    112 #define START_CODE_PREFIX       0x01
    113 #define START_CODE_PREFIX_LENGTH    24
    114 
    115 #define SHORT_VIDEO_START_MARKER         0x20
    116 #define SHORT_VIDEO_START_MARKER_LENGTH  22
    117 #define SHORT_VIDEO_END_MARKER            0x3F
    118 #define GOB_RESYNC_MARKER         0x01
    119 #define GOB_RESYNC_MARKER_LENGTH  17
    120 
    121 /* motion and resync markers used in error resilient mode  */
    122 
    123 #define DC_MARKER                      438273
    124 #define DC_MARKER_LENGTH                19
    125 
    126 #define MOTION_MARKER_COMB             126977
    127 #define MOTION_MARKER_COMB_LENGTH       17
    128 
    129 #define MOTION_MARKER_SEP              81921
    130 #define MOTION_MARKER_SEP_LENGTH        17
    131 
    132 #define RESYNC_MARKER           1
    133 #define RESYNC_MARKER_LENGTH    17
    134 
    135 #define SPRITE_NOT_USED     0
    136 #define STATIC_SPRITE       1
    137 #define ONLINE_SPRITE       2
    138 #define GMC_SPRITE      3
    139 
    140 /* macroblock and block size */
    141 #define MB_SIZE 16
    142 #define NCOEFF_MB (MB_SIZE*MB_SIZE)
    143 #define B_SIZE 8
    144 #define NCOEFF_BLOCK (B_SIZE*B_SIZE)
    145 #define NCOEFF_Y NCOEFF_MB
    146 #define NCOEFF_U NCOEFF_BLOCK
    147 #define NCOEFF_V NCOEFF_BLOCK
    148 #define BLK_PER_MB      4   /* Number of blocks per MB */
    149 
    150 /* VLC decoding related definitions */
    151 #define VLC_ERROR   (-1)
    152 #define VLC_ESCAPE  7167
    153 
    154 
    155 /* macro utility */
    156 #define  ZERO_OUT_64BYTES(x)    { *((uint32*)x) = *(((uint32*)(x))+1) =  \
    157         *(((uint32*)(x))+2) = *(((uint32*)(x))+3) =  \
    158         *(((uint32*)(x))+4) = *(((uint32*)(x))+5) =  \
    159         *(((uint32*)(x))+6) = *(((uint32*)(x))+7) =  \
    160         *(((uint32*)(x))+8) = *(((uint32*)(x))+9) =  \
    161         *(((uint32*)(x))+10) = *(((uint32*)(x))+11) =  \
    162         *(((uint32*)(x))+12) = *(((uint32*)(x))+13) =  \
    163         *(((uint32*)(x))+14) = *(((uint32*)(x))+15) =  0; }
    164 
    165 
    166 
    167 #endif /* _PVDECDEF_H_ */
    168