umc_h264_dec_defs_dec.h

这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数就可以编译该代码.

        }full_frame_snapshot;

        struct ProgressiveRefinementSegmentStart
        {
            Ipp8u progressive_refinement_id;
            Ipp8u num_refinement_steps;
        }progressive_refinement_segment_start;

        struct MotionConstrainedSliceGroupSet
        {
            Ipp8u num_slice_groups_in_set;
            Ipp8u slice_group_id[8];
            Ipp8u exact_sample_value_match_flag;
            Ipp8u pan_scan_rect_flag;
            Ipp8u pan_scan_rect_id;
        }motion_constrained_slice_group_set;

        struct FilmGrainCharacteristics
        {
            Ipp8u film_grain_characteristics_cancel_flag;
            Ipp8u model_id;
            Ipp8u separate_colour_description_present_flag;
            Ipp8u film_grain_bit_depth_luma;
            Ipp8u film_grain_bit_depth_chroma;
            Ipp8u film_grain_full_range_flag;
            Ipp8u film_grain_colour_primaries;
            Ipp8u film_grain_transfer_characteristics;
            Ipp8u film_grain_matrix_coefficients;
            Ipp8u blending_mode_id;
            Ipp8u log2_scale_factor;
            Ipp8u comp_model_present_flag[3];
            Ipp8u num_intensity_intervals[3];
            Ipp8u num_model_values[3];
            Ipp8u intensity_interval_lower_bound[3][256];
            Ipp8u intensity_interval_upper_bound[3][256];
            Ipp8u comp_model_value[3][3][256];
            Ipp8u film_grain_characteristics_repetition_period;
        }film_grain_characteristics;

        struct DeblockingFilterDisplayPreference
        {
            Ipp8u deblocking_display_preference_cancel_flag;
            Ipp8u display_prior_to_deblocking_preferred_flag;
            Ipp8u dec_frame_buffering_constraint_flag;
            Ipp8u deblocking_display_preference_repetition_period;
        }deblocking_filter_display_preference;

        struct StereoVideoInfo
        {
            Ipp8u field_views_flag;
            Ipp8u top_field_is_left_view_flag;
            Ipp8u current_frame_is_left_view_flag;
            Ipp8u next_frame_is_second_view_flag;
            Ipp8u left_view_self_contained_flag;
            Ipp8u right_view_self_contained_flag;
        }stereo_video_info;

    }SEI_messages;
};
// This file defines some data structures and constants used by the decoder,
// that are also needed by other classes, such as post filters and
// error concealment.

//--- block types for CABAC ----
#define LUMA_16DC_CTX       0
#define LUMA_16AC_CTX       1
#define LUMA_8x8_CTX        2
#define LUMA_8x4_CTX        3
#define LUMA_4x8_CTX        4
#define LUMA_4x4_CTX        5
#define CHROMA_DC_CTX       6
#define CHROMA_AC_CTX       7
#define NUM_BLOCK_TYPES     8

#define INTERP_FACTOR 4
#define INTERP_SHIFT 2

// at picture edge, clip motion vectors to only this far beyond the edge,
// in pixel units.
#define D_MV_CLIP_LIMIT 19

// Direct motion vector scaling
#define TR_SHIFT    8
#define TR_RND        (1 << (TR_SHIFT - 1))


// Provide a way to get at the motion vectors for subblock 0 of a
// macroblock, given the macroblock's pel position in the luma plane.

#define getMBMotionVectors(pMVOrigin, mbXOffset, mbYOffset, MVPitch) \
    ((pMVOrigin) + ((mbXOffset) >> 2) + (MVPitch) * ((mbYOffset) >> 2))



#define            D_DIR_FWD 0
#define            D_DIR_BWD 1
#define            D_DIR_BIDIR 2
#define            D_DIR_DIRECT 3
#define            D_DIR_DIRECT_SPATIAL_FWD 4
#define            D_DIR_DIRECT_SPATIAL_BWD 5
#define            D_DIR_DIRECT_SPATIAL_BIDIR 6
// Warning: If these bit defines change, also need to change same
// defines  and related code in sresidual.s.
#define            D_CBP_LUMA_DC 1
#define            D_CBP_1ST_LUMA_AC_BITPOS 1
#define            D_CBP_1ST_CHROMA_DC_BITPOS 17
#define            D_CBP_1ST_CHROMA_AC_BITPOS 19
#define            D_CBP_LUMA_AC (0xffff<<D_CBP_1ST_LUMA_AC_BITPOS)
#define            D_CBP_GET_LUMA_AC_BITS(cbp) (((cbp) & 0x1fffe)>>D_CBP_1ST_LUMA_AC_BITPOS)
#define            D_CBP_CHROMA_DC (0x3<<D_CBP_1ST_CHROMA_DC_BITPOS)
#define            D_CBP_CHROMA_AC (0xff<<D_CBP_1ST_CHROMA_AC_BITPOS)
#define            D_CBP_LUMA_TO_RASTERSCAN_ORDER(x)        \
                ((D_CBP_GET_LUMA_AC_BITS(x)) & 0xc3c3) |    \
                (((x) << 1) & 0x3030) |                     \
                (((x) >> 3) & 0x0c0c)

#define BLOCK_IS_ON_LEFT_EDGE(x) (!((x)&3))
#define BLOCK_IS_ON_TOP_EDGE(x) ((x)<4)

#define CHROMA_BLOCK_IS_ON_LEFT_EDGE(x) (!((x)&1))
#define CHROMA_BLOCK_IS_ON_TOP_EDGE(x) ((x)<18 || (x)==20 || (x)==21)
#define CHROMA_BLOCK_IS_ON_TOP_EDGE_C(x) (!((x)&2))

#define FIRST_DC_CHROMA 17
#define FIRST_AC_CHROMA 19
#define GetMBFieldDecodingFlag(x) ((x.mb_aux_fields)&1)
#define GetMBBottomFlag(x) ((x.mb_aux_fields&2)>>1)
#define GetMB8x8TSFlag(x) ((x.mb_aux_fields&4)>>2)

#define pGetMBFieldDecodingFlag(x) (((x)->mb_aux_fields)&1)
#define pGetMBBottomFlag(x) (((x)->mb_aux_fields&2)>>1)
#define pGetMB8x8TSFlag(x) (((x)->mb_aux_fields&4)>>2)

#define pSetMBFieldDecodingFlag(x,y)    \
    ((x->mb_aux_fields) &= 6);          \
    ((x->mb_aux_fields) |= (y))

#define SetMBFieldDecodingFlag(x,y)     \
    ((x.mb_aux_fields) &= 6);           \
    ((x.mb_aux_fields) |= (y))

#define pSetMB8x8TSFlag(x,y)            \
    ((x->mb_aux_fields) &= 3);          \
    ((x->mb_aux_fields) |= (y<<2))

#define SetMB8x8TSFlag(x,y)             \
    ((x.mb_aux_fields) &= 2);           \
    ((x.mb_aux_fields) |= (y<<2))

#define pSetPairMBFieldDecodingFlag(x1,x2,y)    \
    ((x1->mb_aux_fields) &= 6);                 \
    ((x2->mb_aux_fields) &= 6);                 \
    ((x1->mb_aux_fields) |= (y));               \
    ((x2->mb_aux_fields) |= (y))


#define SetPairMBFieldDecodingFlag(x1,x2,y)     \
    ((x1.mb_aux_fields) &= 6);                  \
    ((x2.mb_aux_fields) &= 6);                  \
    ((x1.mb_aux_fields) |= (y));                \
    ((x2.mb_aux_fields) |= (y))

///////////////// New structures
struct H264DecoderMotionVector
{
    Ipp16s  mvx;
    Ipp16s  mvy;
};//4bytes

struct H264DecoderMacroblockRefIdxs
{
    Ipp8s RefIdxs[16];                              // 16 bytes
};//16bytes

struct H264DecoderMacroblockMVFlags
{
    Ipp8s MVFlags[16];                              // 16 bytes
};//16bytes

struct H264DecoderMacroblockMVs
{
    H264DecoderMotionVector MotionVectors[16];      //64 bytes
};//64bytes

struct H264DecoderMacroblockCoeffsInfo
{
    Ipp8u                numCoeff [24];            //24 bytes
};

struct H264DecoderMacroblockGlobalInfo
{
    Ipp8u                sbtype[4];
    Ipp16s               slice_id;
    Ipp8u                mbtype;
    Ipp8u                mb_aux_fields;
};//8 bytes

struct H264DecoderMacroblockLocalInfo
{
    Ipp32u               cbp4x4;
    Ipp32u               cbp_bits;
    Ipp8u                sbdir[4];
    Ipp8u                cbp;
    Ipp8u                mbtypeBS;
    Ipp8u                intra_chroma_mode;
    Ipp8s                QP;
};//16 btytes

struct H264DecoderBlockLocation
{
    Ipp32s              mb_num;
    Ipp32s              block_num;
};//8 bytes

struct H264DecoderMacroblockNeighboursInfo
{
    Ipp32s              mb_A;
    Ipp32s              mb_B;
    Ipp32s              mb_C;
    Ipp32s              mb_D;
};//32 bytes
struct H264DecoderBlockNeighboursInfo
{
    H264DecoderBlockLocation mbs_left[4];
    H264DecoderBlockLocation mb_above;
    H264DecoderBlockLocation mb_above_right;
    H264DecoderBlockLocation mb_above_left;
    H264DecoderBlockLocation mbs_left_chroma[2][2];
    H264DecoderBlockLocation mb_above_chroma[2];
    H264DecoderBlockLocation dummy[2];
};//128bytes
//this structure is present in each decoder frame
struct H264DecoderGlobalMacroblocksDescriptor
{
    H264DecoderMacroblockMVs *MV[2];//MotionVectors L0 L1
    H264DecoderMacroblockRefIdxs *RefIdxs[2];//Reference Indices L0 l1
    H264DecoderMacroblockGlobalInfo *mbs;//macroblocks
};
//this structure is one for all decoder
struct H264DecoderLocalMacroblockDescriptor
{
    H264DecoderMacroblockMVs *MVDeltas[2];//MotionVectors Deltas L0 and L1
    H264DecoderMacroblockMVFlags *MVFlags[2];//MotionVectors Flags L0 and L1
    H264DecoderMacroblockCoeffsInfo *MacroblockCoeffsInfo; //info about num_coeffs in each block in the current  picture
#ifdef USE_PRECALCULATEDNEIGHBOURS
    H264DecoderMacroblockNeighboursInfo *MacroblockNeighbours;//mb neighbouring info
    H264DecoderMacroblockNeighboursInfo *MBAFFModeMacroblockNeighbours;//mb neighbouring info
    H264DecoderBlockNeighboursInfo *BlockNeighbours;//block neighbouring info (if mbaff turned off remained static)
    H264DecoderBlockNeighboursInfo *MBAFFBlockNeighbours;//block neighbouring info (dynamic anyway)
#endif
    H264DecoderMacroblockLocalInfo *mbs;//reconstuction info
    H264DecoderMBAddr *active_next_mb_table;
};
struct H264DecoderCurrentMacroblockDescriptor
{
    H264DecoderMacroblockMVs *MVs[4];//MV L0,L1, MVDeltas 0,1
    H264DecoderMacroblockMVFlags *MVFlags[2];//MVFlags L0, L1
    H264DecoderMacroblockRefIdxs *RefIdxs[2];//RefIdx L0, L1
    H264DecoderMacroblockCoeffsInfo *MacroblockCoeffsInfo;
    H264DecoderMacroblockNeighboursInfo CurrentMacroblockNeighbours;//mb neighbouring info
    H264DecoderBlockNeighboursInfo CurrentBlockNeighbours;//block neighbouring info (if mbaff turned off remained static)
    H264DecoderMacroblockGlobalInfo *GlobalMacroblockInfo;
    H264DecoderMacroblockGlobalInfo *GlobalMacroblockPairInfo;
    H264DecoderMacroblockLocalInfo *LocalMacroblockInfo;
    H264DecoderMacroblockLocalInfo *LocalMacroblockPairInfo;
};

    // The main decode loop over macroblocks is broken
    // into two loops in the interest of cache localization,
    // significantly improving performance on some systems.
    // This define indicates how many macroblocks to process per loop
    // iteration.

#if defined(ARM) || defined(_ARM_)
#define DEC_NUM_ALLOC_REF_FRAMES 2
#else
#define DEC_NUM_ALLOC_REF_FRAMES 2
#endif
    // Number of reference frames initially allocated by the decoder.
    // Normally 2, significantly increased for ARM for PVP player. Decrease
    // back to 2 for ARM when building xsavcdec player to free up memory
    // for files for performance and regression testing.

} // end namespace UMC

#endif // __UMC_H264_DEC_DEFS_DEC_H__