libavcodec/h264pred.c - play-games/ffmpeg - Git at Google


            
            /*

            
             * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder

            
             * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>

            
             *

            
             * This file is part of FFmpeg.

            
             *

            
             * FFmpeg is free software; you can redistribute it and/or

            
             * modify it under the terms of the GNU Lesser General Public

            
             * License as published by the Free Software Foundation; either

            
             * version 2.1 of the License, or (at your option) any later version.

            
             *

            
             * FFmpeg is distributed in the hope that it will be useful,

            
             * but WITHOUT ANY WARRANTY; without even the implied warranty of

            
             * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

            
             * Lesser General Public License for more details.

            
             *

            
             * You should have received a copy of the GNU Lesser General Public

            
             * License along with FFmpeg; if not, write to the Free Software

            
             * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

            
             */


            /**

            
             * @file

            
             * H.264 / AVC / MPEG-4 part10 prediction functions.

            
             * @author Michael Niedermayer <michaelni@gmx.at>

            
             */


            #include "config.h"

            
            #include "libavutil/attributes.h"

            
            #include "libavutil/avassert.h"

            
            #include "libavutil/intreadwrite.h"

            
            #include "codec_id.h"

            
            #include "h264pred.h"

            
            #include "mathops.h"


            #define BIT_DEPTH 8

            
            #include "h264pred_template.c"

            
            #undef BIT_DEPTH


            #define BIT_DEPTH 9

            
            #include "h264pred_template.c"

            
            #undef BIT_DEPTH


            #define BIT_DEPTH 10

            
            #include "h264pred_template.c"

            
            #undef BIT_DEPTH


            #define BIT_DEPTH 12

            
            #include "h264pred_template.c"

            
            #undef BIT_DEPTH


            #define BIT_DEPTH 14

            
            #include "h264pred_template.c"

            
            #undef BIT_DEPTH


            static void pred4x4_127_dc_c(uint8_t *src, const uint8_t *topright,

            
                                         ptrdiff_t _stride)

            
            {

            
                int stride = _stride;

            
                const uint32_t a = 0x7F7F7F7FU;


                AV_WN32A(src + 0 * stride, a);

            
                AV_WN32A(src + 1 * stride, a);

            
                AV_WN32A(src + 2 * stride, a);

            
                AV_WN32A(src + 3 * stride, a);

            
            }


            static void pred4x4_129_dc_c(uint8_t *src, const uint8_t *topright,

            
                                         ptrdiff_t _stride)

            
            {

            
                int stride = _stride;

            
                const uint32_t a = 0x81818181U;


                AV_WN32A(src + 0 * stride, a);

            
                AV_WN32A(src + 1 * stride, a);

            
                AV_WN32A(src + 2 * stride, a);

            
                AV_WN32A(src + 3 * stride, a);

            
            }


            static void pred4x4_vertical_vp8_c(uint8_t *src, const uint8_t *topright,

            
                                               ptrdiff_t stride)

            
            {

            
                const unsigned lt = src[-1-1*stride];

            
                LOAD_TOP_EDGE

            
                LOAD_TOP_RIGHT_EDGE

            
                uint32_t v = PACK_4U8((lt + 2*t0 + t1 + 2) >> 2,

            
                                      (t0 + 2*t1 + t2 + 2) >> 2,

            
                                      (t1 + 2*t2 + t3 + 2) >> 2,

            
                                      (t2 + 2*t3 + t4 + 2) >> 2);


                AV_WN32A(src+0*stride, v);

            
                AV_WN32A(src+1*stride, v);

            
                AV_WN32A(src+2*stride, v);

            
                AV_WN32A(src+3*stride, v);

            
            }


            static void pred4x4_horizontal_vp8_c(uint8_t *src, const uint8_t *topright,

            
                                                 ptrdiff_t stride)

            
            {

            
                const unsigned lt = src[-1-1*stride];

            
                LOAD_LEFT_EDGE


                AV_WN32A(src+0*stride, ((lt + 2*l0 + l1 + 2) >> 2)*0x01010101);

            
                AV_WN32A(src+1*stride, ((l0 + 2*l1 + l2 + 2) >> 2)*0x01010101);

            
                AV_WN32A(src+2*stride, ((l1 + 2*l2 + l3 + 2) >> 2)*0x01010101);

            
                AV_WN32A(src+3*stride, ((l2 + 2*l3 + l3 + 2) >> 2)*0x01010101);

            
            }


            static void pred4x4_down_left_svq3_c(uint8_t *src, const uint8_t *topright,

            
                                                 ptrdiff_t stride)

            
            {

            
                LOAD_TOP_EDGE

            
                LOAD_LEFT_EDGE


                src[0+0*stride]=(l1 + t1)>>1;

            
                src[1+0*stride]=

            
                src[0+1*stride]=(l2 + t2)>>1;

            
                src[2+0*stride]=

            
                src[1+1*stride]=

            
                src[0+2*stride]=

            
                src[3+0*stride]=

            
                src[2+1*stride]=

            
                src[1+2*stride]=

            
                src[0+3*stride]=

            
                src[3+1*stride]=

            
                src[2+2*stride]=

            
                src[1+3*stride]=

            
                src[3+2*stride]=

            
                src[2+3*stride]=

            
                src[3+3*stride]=(l3 + t3)>>1;

            
            }


            static void pred4x4_down_left_rv40_c(uint8_t *src, const uint8_t *topright,

            
                                                 ptrdiff_t stride)

            
            {

            
                LOAD_TOP_EDGE

            
                LOAD_TOP_RIGHT_EDGE

            
                LOAD_LEFT_EDGE

            
                LOAD_DOWN_LEFT_EDGE


                src[0+0*stride]=(t0 + t2 + 2*t1 + 2 + l0 + l2 + 2*l1 + 2)>>3;

            
                src[1+0*stride]=

            
                src[0+1*stride]=(t1 + t3 + 2*t2 + 2 + l1 + l3 + 2*l2 + 2)>>3;

            
                src[2+0*stride]=

            
                src[1+1*stride]=

            
                src[0+2*stride]=(t2 + t4 + 2*t3 + 2 + l2 + l4 + 2*l3 + 2)>>3;

            
                src[3+0*stride]=

            
                src[2+1*stride]=

            
                src[1+2*stride]=

            
                src[0+3*stride]=(t3 + t5 + 2*t4 + 2 + l3 + l5 + 2*l4 + 2)>>3;

            
                src[3+1*stride]=

            
                src[2+2*stride]=

            
                src[1+3*stride]=(t4 + t6 + 2*t5 + 2 + l4 + l6 + 2*l5 + 2)>>3;

            
                src[3+2*stride]=

            
                src[2+3*stride]=(t5 + t7 + 2*t6 + 2 + l5 + l7 + 2*l6 + 2)>>3;

            
                src[3+3*stride]=(t6 + t7 + 1 + l6 + l7 + 1)>>2;

            
            }


            static void pred4x4_down_left_rv40_nodown_c(uint8_t *src,

            
                                                        const uint8_t *topright,

            
                                                        ptrdiff_t stride)

            
            {

            
                LOAD_TOP_EDGE

            
                LOAD_TOP_RIGHT_EDGE

            
                LOAD_LEFT_EDGE


                src[0+0*stride]=(t0 + t2 + 2*t1 + 2 + l0 + l2 + 2*l1 + 2)>>3;

            
                src[1+0*stride]=

            
                src[0+1*stride]=(t1 + t3 + 2*t2 + 2 + l1 + l3 + 2*l2 + 2)>>3;

            
                src[2+0*stride]=

            
                src[1+1*stride]=

            
                src[0+2*stride]=(t2 + t4 + 2*t3 + 2 + l2 + 3*l3 + 2)>>3;

            
                src[3+0*stride]=

            
                src[2+1*stride]=

            
                src[1+2*stride]=

            
                src[0+3*stride]=(t3 + t5 + 2*t4 + 2 + l3*4 + 2)>>3;

            
                src[3+1*stride]=

            
                src[2+2*stride]=

            
                src[1+3*stride]=(t4 + t6 + 2*t5 + 2 + l3*4 + 2)>>3;

            
                src[3+2*stride]=

            
                src[2+3*stride]=(t5 + t7 + 2*t6 + 2 + l3*4 + 2)>>3;

            
                src[3+3*stride]=(t6 + t7 + 1 + 2*l3 + 1)>>2;

            
            }


            static void pred4x4_vertical_left_rv40(uint8_t *src, const uint8_t *topright,

            
                                                   ptrdiff_t stride,

            
                                                   const int l0, const int l1, const int l2,

            
                                                   const int l3, const int l4)

            
            {

            
                LOAD_TOP_EDGE

            
                LOAD_TOP_RIGHT_EDGE


                src[0+0*stride]=(2*t0 + 2*t1 + l1 + 2*l2 + l3 + 4)>>3;

            
                src[1+0*stride]=

            
                src[0+2*stride]=(t1 + t2 + 1)>>1;

            
                src[2+0*stride]=

            
                src[1+2*stride]=(t2 + t3 + 1)>>1;

            
                src[3+0*stride]=

            
                src[2+2*stride]=(t3 + t4+ 1)>>1;

            
                src[3+2*stride]=(t4 + t5+ 1)>>1;

            
                src[0+1*stride]=(t0 + 2*t1 + t2 + l2 + 2*l3 + l4 + 4)>>3;

            
                src[1+1*stride]=

            
                src[0+3*stride]=(t1 + 2*t2 + t3 + 2)>>2;

            
                src[2+1*stride]=

            
                src[1+3*stride]=(t2 + 2*t3 + t4 + 2)>>2;

            
                src[3+1*stride]=

            
                src[2+3*stride]=(t3 + 2*t4 + t5 + 2)>>2;

            
                src[3+3*stride]=(t4 + 2*t5 + t6 + 2)>>2;

            
            }


            static void pred4x4_vertical_left_rv40_c(uint8_t *src, const uint8_t *topright,

            
                                                     ptrdiff_t stride)

            
            {

            
                LOAD_LEFT_EDGE

            
                LOAD_DOWN_LEFT_EDGE


                pred4x4_vertical_left_rv40(src, topright, stride, l0, l1, l2, l3, l4);

            
            }


            static void pred4x4_vertical_left_rv40_nodown_c(uint8_t *src,

            
                                                            const uint8_t *topright,

            
                                                            ptrdiff_t stride)

            
            {

            
                LOAD_LEFT_EDGE


                pred4x4_vertical_left_rv40(src, topright, stride, l0, l1, l2, l3, l3);

            
            }


            static void pred4x4_vertical_left_vp8_c(uint8_t *src, const uint8_t *topright,

            
                                                    ptrdiff_t stride)

            
            {

            
                LOAD_TOP_EDGE

            
                LOAD_TOP_RIGHT_EDGE


                src[0+0*stride]=(t0 + t1 + 1)>>1;

            
                src[1+0*stride]=

            
                src[0+2*stride]=(t1 + t2 + 1)>>1;

            
                src[2+0*stride]=

            
                src[1+2*stride]=(t2 + t3 + 1)>>1;

            
                src[3+0*stride]=

            
                src[2+2*stride]=(t3 + t4 + 1)>>1;

            
                src[0+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;

            
                src[1+1*stride]=

            
                src[0+3*stride]=(t1 + 2*t2 + t3 + 2)>>2;

            
                src[2+1*stride]=

            
                src[1+3*stride]=(t2 + 2*t3 + t4 + 2)>>2;

            
                src[3+1*stride]=

            
                src[2+3*stride]=(t3 + 2*t4 + t5 + 2)>>2;

            
                src[3+2*stride]=(t4 + 2*t5 + t6 + 2)>>2;

            
                src[3+3*stride]=(t5 + 2*t6 + t7 + 2)>>2;

            
            }


            static void pred4x4_horizontal_up_rv40_c(uint8_t *src, const uint8_t *topright,

            
                                                     ptrdiff_t stride)

            
            {

            
                LOAD_LEFT_EDGE

            
                LOAD_DOWN_LEFT_EDGE

            
                LOAD_TOP_EDGE

            
                LOAD_TOP_RIGHT_EDGE


                src[0+0*stride]=(t1 + 2*t2 + t3 + 2*l0 + 2*l1 + 4)>>3;

            
                src[1+0*stride]=(t2 + 2*t3 + t4 + l0 + 2*l1 + l2 + 4)>>3;

            
                src[2+0*stride]=

            
                src[0+1*stride]=(t3 + 2*t4 + t5 + 2*l1 + 2*l2 + 4)>>3;

            
                src[3+0*stride]=

            
                src[1+1*stride]=(t4 + 2*t5 + t6 + l1 + 2*l2 + l3 + 4)>>3;

            
                src[2+1*stride]=

            
                src[0+2*stride]=(t5 + 2*t6 + t7 + 2*l2 + 2*l3 + 4)>>3;

            
                src[3+1*stride]=

            
                src[1+2*stride]=(t6 + 3*t7 + l2 + 3*l3 + 4)>>3;

            
                src[3+2*stride]=

            
                src[1+3*stride]=(l3 + 2*l4 + l5 + 2)>>2;

            
                src[0+3*stride]=

            
                src[2+2*stride]=(t6 + t7 + l3 + l4 + 2)>>2;

            
                src[2+3*stride]=(l4 + l5 + 1)>>1;

            
                src[3+3*stride]=(l4 + 2*l5 + l6 + 2)>>2;

            
            }


            static void pred4x4_horizontal_up_rv40_nodown_c(uint8_t *src,

            
                                                            const uint8_t *topright,

            
                                                            ptrdiff_t stride)

            
            {

            
                LOAD_LEFT_EDGE

            
                LOAD_TOP_EDGE

            
                LOAD_TOP_RIGHT_EDGE


                src[0+0*stride]=(t1 + 2*t2 + t3 + 2*l0 + 2*l1 + 4)>>3;

            
                src[1+0*stride]=(t2 + 2*t3 + t4 + l0 + 2*l1 + l2 + 4)>>3;

            
                src[2+0*stride]=

            
                src[0+1*stride]=(t3 + 2*t4 + t5 + 2*l1 + 2*l2 + 4)>>3;

            
                src[3+0*stride]=

            
                src[1+1*stride]=(t4 + 2*t5 + t6 + l1 + 2*l2 + l3 + 4)>>3;

            
                src[2+1*stride]=

            
                src[0+2*stride]=(t5 + 2*t6 + t7 + 2*l2 + 2*l3 + 4)>>3;

            
                src[3+1*stride]=

            
                src[1+2*stride]=(t6 + 3*t7 + l2 + 3*l3 + 4)>>3;

            
                src[3+2*stride]=

            
                src[1+3*stride]=l3;

            
                src[0+3*stride]=

            
                src[2+2*stride]=(t6 + t7 + 2*l3 + 2)>>2;

            
                src[2+3*stride]=

            
                src[3+3*stride]=l3;

            
            }


            static void pred4x4_tm_vp8_c(uint8_t *src, const uint8_t *topright,

            
                                         ptrdiff_t stride)

            
            {

            
                const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP - src[-1-stride];

            
                uint8_t *top = src-stride;

            
                int y;


                for (y = 0; y < 4; y++) {

            
                    const uint8_t *cm_in = cm + src[-1];

            
                    src[0] = cm_in[top[0]];

            
                    src[1] = cm_in[top[1]];

            
                    src[2] = cm_in[top[2]];

            
                    src[3] = cm_in[top[3]];

            
                    src += stride;

            
                }

            
            }


            static void pred16x16_plane_svq3_c(uint8_t *src, ptrdiff_t stride)

            
            {

            
                pred16x16_plane_compat_8_c(src, stride, 1, 0);

            
            }


            static void pred16x16_plane_rv40_c(uint8_t *src, ptrdiff_t stride)

            
            {

            
                pred16x16_plane_compat_8_c(src, stride, 0, 1);

            
            }


            static void pred16x16_tm_vp8_c(uint8_t *src, ptrdiff_t stride)

            
            {

            
                const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP - src[-1-stride];

            
                uint8_t *top = src-stride;

            
                int y;


                for (y = 0; y < 16; y++) {

            
                    const uint8_t *cm_in = cm + src[-1];

            
                    src[0]  = cm_in[top[0]];

            
                    src[1]  = cm_in[top[1]];

            
                    src[2]  = cm_in[top[2]];

            
                    src[3]  = cm_in[top[3]];

            
                    src[4]  = cm_in[top[4]];

            
                    src[5]  = cm_in[top[5]];

            
                    src[6]  = cm_in[top[6]];

            
                    src[7]  = cm_in[top[7]];

            
                    src[8]  = cm_in[top[8]];

            
                    src[9]  = cm_in[top[9]];

            
                    src[10] = cm_in[top[10]];

            
                    src[11] = cm_in[top[11]];

            
                    src[12] = cm_in[top[12]];

            
                    src[13] = cm_in[top[13]];

            
                    src[14] = cm_in[top[14]];

            
                    src[15] = cm_in[top[15]];

            
                    src += stride;

            
                }

            
            }


            static void pred8x8_left_dc_rv40_c(uint8_t *src, ptrdiff_t stride)

            
            {

            
                int i;

            
                unsigned dc0;


                dc0=0;

            
                for(i=0;i<8; i++)

            
                    dc0+= src[-1+i*stride];

            
                dc0= 0x01010101*((dc0 + 4)>>3);


                for(i=0; i<8; i++){

            
                    ((uint32_t*)(src+i*stride))[0]=

            
                    ((uint32_t*)(src+i*stride))[1]= dc0;

            
                }

            
            }


            static void pred8x8_top_dc_rv40_c(uint8_t *src, ptrdiff_t stride)

            
            {

            
                int i;

            
                unsigned dc0;


                dc0=0;

            
                for(i=0;i<8; i++)

            
                    dc0+= src[i-stride];

            
                dc0= 0x01010101*((dc0 + 4)>>3);


                for(i=0; i<8; i++){

            
                    ((uint32_t*)(src+i*stride))[0]=

            
                    ((uint32_t*)(src+i*stride))[1]= dc0;

            
                }

            
            }


            static void pred8x8_dc_rv40_c(uint8_t *src, ptrdiff_t stride)

            
            {

            
                int i;

            
                unsigned dc0 = 0;


                for(i=0;i<4; i++){

            
                    dc0+= src[-1+i*stride] + src[i-stride];

            
                    dc0+= src[4+i-stride];

            
                    dc0+= src[-1+(i+4)*stride];

            
                }

            
                dc0= 0x01010101*((dc0 + 8)>>4);


                for(i=0; i<4; i++){

            
                    ((uint32_t*)(src+i*stride))[0]= dc0;

            
                    ((uint32_t*)(src+i*stride))[1]= dc0;

            
                }

            
                for(i=4; i<8; i++){

            
                    ((uint32_t*)(src+i*stride))[0]= dc0;

            
                    ((uint32_t*)(src+i*stride))[1]= dc0;

            
                }

            
            }


            static void pred8x8_tm_vp8_c(uint8_t *src, ptrdiff_t stride)

            
            {

            
                const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP - src[-1-stride];

            
                uint8_t *top = src-stride;

            
                int y;


                for (y = 0; y < 8; y++) {

            
                    const uint8_t *cm_in = cm + src[-1];

            
                    src[0] = cm_in[top[0]];

            
                    src[1] = cm_in[top[1]];

            
                    src[2] = cm_in[top[2]];

            
                    src[3] = cm_in[top[3]];

            
                    src[4] = cm_in[top[4]];

            
                    src[5] = cm_in[top[5]];

            
                    src[6] = cm_in[top[6]];

            
                    src[7] = cm_in[top[7]];

            
                    src += stride;

            
                }

            
            }


            /**

            
             * Set the intra prediction function pointers.

            
             */

            
            av_cold void ff_h264_pred_init(H264PredContext *h, int codec_id,

            
                                           const int bit_depth,

            
                                           int chroma_format_idc)

            
            {

            
            #undef FUNC

            
            #undef FUNCC

            
            #define FUNC(a, depth) a ## _ ## depth

            
            #define FUNCC(a, depth) a ## _ ## depth ## _c

            
            #define FUNCD(a) a ## _c


            #define H264_PRED(depth) \

            
                h->pred4x4[VERT_PRED           ] = FUNCC(pred4x4_vertical,        depth);\

            
                h->pred4x4[HOR_PRED            ] = FUNCC(pred4x4_horizontal,      depth);\

            
                h->pred4x4[DC_PRED             ] = FUNCC(pred4x4_dc,              depth);\

            
                h->pred4x4[DIAG_DOWN_LEFT_PRED ] = FUNCC(pred4x4_down_left,       depth);\

            
                h->pred4x4[DIAG_DOWN_RIGHT_PRED] = FUNCC(pred4x4_down_right,      depth);\

            
                h->pred4x4[VERT_RIGHT_PRED     ] = FUNCC(pred4x4_vertical_right,  depth);\

            
                h->pred4x4[HOR_DOWN_PRED       ] = FUNCC(pred4x4_horizontal_down, depth);\

            
                h->pred4x4[VERT_LEFT_PRED      ] = FUNCC(pred4x4_vertical_left,   depth);\

            
                h->pred4x4[HOR_UP_PRED         ] = FUNCC(pred4x4_horizontal_up,   depth);\

            
                h->pred4x4[LEFT_DC_PRED        ] = FUNCC(pred4x4_left_dc,         depth);\

            
                h->pred4x4[TOP_DC_PRED         ] = FUNCC(pred4x4_top_dc,          depth);\

            
                if (depth > 8 || codec_id != AV_CODEC_ID_VP8)\

            
                    h->pred4x4[DC_128_PRED     ] = FUNCC(pred4x4_128_dc,          depth);\

            
            \

            
                h->pred8x8l[VERT_PRED           ]= FUNCC(pred8x8l_vertical            , depth);\

            
                h->pred8x8l[HOR_PRED            ]= FUNCC(pred8x8l_horizontal          , depth);\

            
                h->pred8x8l[DC_PRED             ]= FUNCC(pred8x8l_dc                  , depth);\

            
                h->pred8x8l[DIAG_DOWN_LEFT_PRED ]= FUNCC(pred8x8l_down_left           , depth);\

            
                h->pred8x8l[DIAG_DOWN_RIGHT_PRED]= FUNCC(pred8x8l_down_right          , depth);\

            
                h->pred8x8l[VERT_RIGHT_PRED     ]= FUNCC(pred8x8l_vertical_right      , depth);\

            
                h->pred8x8l[HOR_DOWN_PRED       ]= FUNCC(pred8x8l_horizontal_down     , depth);\

            
                h->pred8x8l[VERT_LEFT_PRED      ]= FUNCC(pred8x8l_vertical_left       , depth);\

            
                h->pred8x8l[HOR_UP_PRED         ]= FUNCC(pred8x8l_horizontal_up       , depth);\

            
                h->pred8x8l[LEFT_DC_PRED        ]= FUNCC(pred8x8l_left_dc             , depth);\

            
                h->pred8x8l[TOP_DC_PRED         ]= FUNCC(pred8x8l_top_dc              , depth);\

            
                h->pred8x8l[DC_128_PRED         ]= FUNCC(pred8x8l_128_dc              , depth);\

            
            \

            
                if (chroma_format_idc <= 1) {\

            
                    h->pred8x8[VERT_PRED8x8   ]= FUNCC(pred8x8_vertical               , depth);\

            
                    h->pred8x8[HOR_PRED8x8    ]= FUNCC(pred8x8_horizontal             , depth);\

            
                    h->pred8x8[PLANE_PRED8x8] = FUNCC(pred8x8_plane,       depth);\

            
                } else {\

            
                    h->pred8x8[VERT_PRED8x8   ]= FUNCC(pred8x16_vertical              , depth);\

            
                    h->pred8x8[HOR_PRED8x8    ]= FUNCC(pred8x16_horizontal            , depth);\

            
                    h->pred8x8[PLANE_PRED8x8] = FUNCC(pred8x16_plane,      depth);\

            
                }\

            
                if (depth > 8 || (codec_id != AV_CODEC_ID_RV40 && \

            
                                  codec_id != AV_CODEC_ID_VP7  && \

            
                                  codec_id != AV_CODEC_ID_VP8)) { \

            
                    if (chroma_format_idc <= 1) {\

            
                        h->pred8x8[DC_PRED8x8     ]= FUNCC(pred8x8_dc                     , depth);\

            
                        h->pred8x8[LEFT_DC_PRED8x8]= FUNCC(pred8x8_left_dc                , depth);\

            
                        h->pred8x8[TOP_DC_PRED8x8 ]= FUNCC(pred8x8_top_dc                 , depth);\

            
                        h->pred8x8[ALZHEIMER_DC_L0T_PRED8x8 ]= FUNC(pred8x8_mad_cow_dc_l0t, depth);\

            
                        h->pred8x8[ALZHEIMER_DC_0LT_PRED8x8 ]= FUNC(pred8x8_mad_cow_dc_0lt, depth);\

            
                        h->pred8x8[ALZHEIMER_DC_L00_PRED8x8 ]= FUNC(pred8x8_mad_cow_dc_l00, depth);\

            
                        h->pred8x8[ALZHEIMER_DC_0L0_PRED8x8 ]= FUNC(pred8x8_mad_cow_dc_0l0, depth);\

            
                    } else {\

            
                        h->pred8x8[DC_PRED8x8     ]= FUNCC(pred8x16_dc                    , depth);\

            
                        h->pred8x8[LEFT_DC_PRED8x8]= FUNCC(pred8x16_left_dc               , depth);\

            
                        h->pred8x8[TOP_DC_PRED8x8 ]= FUNCC(pred8x16_top_dc                , depth);\

            
                        h->pred8x8[ALZHEIMER_DC_L0T_PRED8x8 ]= FUNC(pred8x16_mad_cow_dc_l0t, depth);\

            
                        h->pred8x8[ALZHEIMER_DC_0LT_PRED8x8 ]= FUNC(pred8x16_mad_cow_dc_0lt, depth);\

            
                        h->pred8x8[ALZHEIMER_DC_L00_PRED8x8 ]= FUNC(pred8x16_mad_cow_dc_l00, depth);\

            
                        h->pred8x8[ALZHEIMER_DC_0L0_PRED8x8 ]= FUNC(pred8x16_mad_cow_dc_0l0, depth);\

            
                    }\

            
                }else{\

            
                    h->pred8x8[DC_PRED8x8     ]= FUNCD(pred8x8_dc_rv40);\

            
                    h->pred8x8[LEFT_DC_PRED8x8]= FUNCD(pred8x8_left_dc_rv40);\

            
                    h->pred8x8[TOP_DC_PRED8x8 ]= FUNCD(pred8x8_top_dc_rv40);\

            
                }\

            
                if (chroma_format_idc <= 1) {\

            
                    h->pred8x8[DC_128_PRED8x8 ]= FUNCC(pred8x8_128_dc                 , depth);\

            
                } else {\

            
                    h->pred8x8[DC_128_PRED8x8 ]= FUNCC(pred8x16_128_dc                , depth);\

            
                }\

            
            \

            
                h->pred16x16[DC_PRED8x8     ]= FUNCC(pred16x16_dc                     , depth);\

            
                h->pred16x16[VERT_PRED8x8   ]= FUNCC(pred16x16_vertical               , depth);\

            
                h->pred16x16[HOR_PRED8x8    ]= FUNCC(pred16x16_horizontal             , depth);\

            
                h->pred16x16[PLANE_PRED8x8  ]= FUNCC(pred16x16_plane                  , depth);\

            
                h->pred16x16[LEFT_DC_PRED8x8]= FUNCC(pred16x16_left_dc                , depth);\

            
                h->pred16x16[TOP_DC_PRED8x8 ]= FUNCC(pred16x16_top_dc                 , depth);\

            
                h->pred16x16[DC_128_PRED8x8 ]= FUNCC(pred16x16_128_dc                 , depth);\

            
            \

            
                /* special lossless h/v prediction for H.264 */ \

            
                h->pred4x4_add  [VERT_PRED   ]= FUNCC(pred4x4_vertical_add            , depth);\

            
                h->pred4x4_add  [ HOR_PRED   ]= FUNCC(pred4x4_horizontal_add          , depth);\

            
                h->pred8x8l_add [VERT_PRED   ]= FUNCC(pred8x8l_vertical_add           , depth);\

            
                h->pred8x8l_add [ HOR_PRED   ]= FUNCC(pred8x8l_horizontal_add         , depth);\

            
                h->pred8x8l_filter_add [VERT_PRED   ]= FUNCC(pred8x8l_vertical_filter_add           , depth);\

            
                h->pred8x8l_filter_add [ HOR_PRED   ]= FUNCC(pred8x8l_horizontal_filter_add         , depth);\

            
                if (chroma_format_idc <= 1) {\

            
                    h->pred8x8_add[VERT_PRED8x8] = FUNCC(pred8x8_vertical_add,    depth);\

            
                    h->pred8x8_add[ HOR_PRED8x8] = FUNCC(pred8x8_horizontal_add,  depth);\

            
                } else {\

            
                    h->pred8x8_add  [VERT_PRED8x8]= FUNCC(pred8x16_vertical_add            , depth);\

            
                    h->pred8x8_add  [ HOR_PRED8x8]= FUNCC(pred8x16_horizontal_add          , depth);\

            
                }\

            
                h->pred16x16_add[VERT_PRED8x8]= FUNCC(pred16x16_vertical_add          , depth);\

            
                h->pred16x16_add[ HOR_PRED8x8]= FUNCC(pred16x16_horizontal_add        , depth);\


                switch (bit_depth) {

            
                    case 9:

            
                        H264_PRED(9)

            
                        break;

            
                    case 10:

            
                        H264_PRED(10)

            
                        break;

            
                    case 12:

            
                        H264_PRED(12)

            
                        break;

            
                    case 14:

            
                        H264_PRED(14)

            
                        break;

            
                    default:

            
                        av_assert0(bit_depth<=8);

            
                        H264_PRED(8)

            
                        switch (codec_id) {

            
                        case AV_CODEC_ID_SVQ3:

            
                            h->pred4x4[DIAG_DOWN_LEFT_PRED] = FUNCD(pred4x4_down_left_svq3);

            
                            h->pred16x16[PLANE_PRED8x8    ] = FUNCD(pred16x16_plane_svq3);

            
                            break;

            
                        case AV_CODEC_ID_RV40:

            
                            h->pred4x4[DIAG_DOWN_LEFT_PRED] = FUNCD(pred4x4_down_left_rv40);

            
                            h->pred4x4[VERT_LEFT_PRED     ] = FUNCD(pred4x4_vertical_left_rv40);

            
                            h->pred4x4[HOR_UP_PRED        ] = FUNCD(pred4x4_horizontal_up_rv40);

            
                            h->pred4x4[DIAG_DOWN_LEFT_PRED_RV40_NODOWN] = FUNCD(pred4x4_down_left_rv40_nodown);

            
                            h->pred4x4[HOR_UP_PRED_RV40_NODOWN] = FUNCD(pred4x4_horizontal_up_rv40_nodown);

            
                            h->pred4x4[VERT_LEFT_PRED_RV40_NODOWN] = FUNCD(pred4x4_vertical_left_rv40_nodown);

            
                            h->pred16x16[PLANE_PRED8x8    ] = FUNCD(pred16x16_plane_rv40);

            
                            break;

            
                        case AV_CODEC_ID_VP7:

            
                        case AV_CODEC_ID_VP8:

            
                            h->pred4x4[VERT_PRED       ] = FUNCD(pred4x4_vertical_vp8);

            
                            h->pred4x4[HOR_PRED        ] = FUNCD(pred4x4_horizontal_vp8);

            
                            h->pred4x4[VERT_LEFT_PRED  ] = FUNCD(pred4x4_vertical_left_vp8);

            
                            h->pred4x4[TM_VP8_PRED     ] = FUNCD(pred4x4_tm_vp8);

            
                            h->pred4x4[VERT_VP8_PRED   ] = FUNCC(pred4x4_vertical, 8);

            
                            h->pred4x4[DC_127_PRED     ] = FUNCD(pred4x4_127_dc);

            
                            h->pred4x4[DC_129_PRED     ] = FUNCD(pred4x4_129_dc);

            
                            h->pred4x4[HOR_VP8_PRED    ] = FUNCC(pred4x4_horizontal, 8);

            
                            h->pred8x8[PLANE_PRED8x8   ] = FUNCD(pred8x8_tm_vp8);

            
                            h->pred8x8[DC_127_PRED8x8  ] = FUNCC(pred8x8_127_dc, 8);

            
                            h->pred8x8[DC_129_PRED8x8  ] = FUNCC(pred8x8_129_dc, 8);

            
                            h->pred16x16[PLANE_PRED8x8 ] = FUNCD(pred16x16_tm_vp8);

            
                            h->pred16x16[DC_127_PRED8x8] = FUNCC(pred16x16_127_dc, 8);

            
                            h->pred16x16[DC_129_PRED8x8] = FUNCC(pred16x16_129_dc, 8);

            
                            break;

            
                        }

            
                        break;

            
                }


            #if ARCH_AARCH64

            
                ff_h264_pred_init_aarch64(h, codec_id, bit_depth, chroma_format_idc);

            
            #elif ARCH_ARM

            
                ff_h264_pred_init_arm(h, codec_id, bit_depth, chroma_format_idc);

            
            #elif ARCH_X86

            
                ff_h264_pred_init_x86(h, codec_id, bit_depth, chroma_format_idc);

            
            #elif ARCH_MIPS

            
                ff_h264_pred_init_mips(h, codec_id, bit_depth, chroma_format_idc);

            
            #elif ARCH_LOONGARCH

            
                ff_h264_pred_init_loongarch(h, codec_id, bit_depth, chroma_format_idc);

            
            #endif

            
            }
	/*
	* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
	* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
	*
	* This file is part of FFmpeg.
	*
	* FFmpeg is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* FFmpeg is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with FFmpeg; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	/**
	* @file
	* H.264 / AVC / MPEG-4 part10 prediction functions.
	* @author Michael Niedermayer <michaelni@gmx.at>
	*/

	#include "config.h"
	#include "libavutil/attributes.h"
	#include "libavutil/avassert.h"
	#include "libavutil/intreadwrite.h"
	#include "codec_id.h"
	#include "h264pred.h"
	#include "mathops.h"

	#define BIT_DEPTH 8
	#include "h264pred_template.c"
	#undef BIT_DEPTH

	#define BIT_DEPTH 9
	#include "h264pred_template.c"
	#undef BIT_DEPTH

	#define BIT_DEPTH 10
	#include "h264pred_template.c"
	#undef BIT_DEPTH

	#define BIT_DEPTH 12
	#include "h264pred_template.c"
	#undef BIT_DEPTH

	#define BIT_DEPTH 14
	#include "h264pred_template.c"
	#undef BIT_DEPTH

	static void pred4x4_127_dc_c(uint8_t src, const uint8_t topright,
	ptrdiff_t _stride)
	{
	int stride = _stride;
	const uint32_t a = 0x7F7F7F7FU;

	AV_WN32A(src + 0 * stride, a);
	AV_WN32A(src + 1 * stride, a);
	AV_WN32A(src + 2 * stride, a);
	AV_WN32A(src + 3 * stride, a);
	}

	static void pred4x4_129_dc_c(uint8_t src, const uint8_t topright,
	ptrdiff_t _stride)
	{
	int stride = _stride;
	const uint32_t a = 0x81818181U;

	AV_WN32A(src + 0 * stride, a);
	AV_WN32A(src + 1 * stride, a);
	AV_WN32A(src + 2 * stride, a);
	AV_WN32A(src + 3 * stride, a);
	}

	static void pred4x4_vertical_vp8_c(uint8_t src, const uint8_t topright,
	ptrdiff_t stride)
	{
	const unsigned lt = src[-1-1*stride];
	LOAD_TOP_EDGE
	LOAD_TOP_RIGHT_EDGE
	uint32_t v = PACK_4U8((lt + 2*t0 + t1 + 2) >> 2,
	(t0 + 2*t1 + t2 + 2) >> 2,
	(t1 + 2*t2 + t3 + 2) >> 2,
	(t2 + 2*t3 + t4 + 2) >> 2);

	AV_WN32A(src+0*stride, v);
	AV_WN32A(src+1*stride, v);
	AV_WN32A(src+2*stride, v);
	AV_WN32A(src+3*stride, v);
	}

	static void pred4x4_horizontal_vp8_c(uint8_t src, const uint8_t topright,
	ptrdiff_t stride)
	{
	const unsigned lt = src[-1-1*stride];
	LOAD_LEFT_EDGE

	AV_WN32A(src+0stride, ((lt + 2l0 + l1 + 2) >> 2)*0x01010101);
	AV_WN32A(src+1stride, ((l0 + 2l1 + l2 + 2) >> 2)*0x01010101);
	AV_WN32A(src+2stride, ((l1 + 2l2 + l3 + 2) >> 2)*0x01010101);
	AV_WN32A(src+3stride, ((l2 + 2l3 + l3 + 2) >> 2)*0x01010101);
	}

	static void pred4x4_down_left_svq3_c(uint8_t src, const uint8_t topright,
	ptrdiff_t stride)
	{
	LOAD_TOP_EDGE
	LOAD_LEFT_EDGE

	src[0+0*stride]=(l1 + t1)>>1;
	src[1+0*stride]=
	src[0+1*stride]=(l2 + t2)>>1;
	src[2+0*stride]=
	src[1+1*stride]=
	src[0+2*stride]=
	src[3+0*stride]=
	src[2+1*stride]=
	src[1+2*stride]=
	src[0+3*stride]=
	src[3+1*stride]=
	src[2+2*stride]=
	src[1+3*stride]=
	src[3+2*stride]=
	src[2+3*stride]=
	src[3+3*stride]=(l3 + t3)>>1;
	}

	static void pred4x4_down_left_rv40_c(uint8_t src, const uint8_t topright,
	ptrdiff_t stride)
	{
	LOAD_TOP_EDGE
	LOAD_TOP_RIGHT_EDGE
	LOAD_LEFT_EDGE
	LOAD_DOWN_LEFT_EDGE

	src[0+0stride]=(t0 + t2 + 2t1 + 2 + l0 + l2 + 2*l1 + 2)>>3;
	src[1+0*stride]=
	src[0+1stride]=(t1 + t3 + 2t2 + 2 + l1 + l3 + 2*l2 + 2)>>3;
	src[2+0*stride]=
	src[1+1*stride]=
	src[0+2stride]=(t2 + t4 + 2t3 + 2 + l2 + l4 + 2*l3 + 2)>>3;
	src[3+0*stride]=
	src[2+1*stride]=
	src[1+2*stride]=
	src[0+3stride]=(t3 + t5 + 2t4 + 2 + l3 + l5 + 2*l4 + 2)>>3;
	src[3+1*stride]=
	src[2+2*stride]=
	src[1+3stride]=(t4 + t6 + 2t5 + 2 + l4 + l6 + 2*l5 + 2)>>3;
	src[3+2*stride]=
	src[2+3stride]=(t5 + t7 + 2t6 + 2 + l5 + l7 + 2*l6 + 2)>>3;
	src[3+3*stride]=(t6 + t7 + 1 + l6 + l7 + 1)>>2;
	}

	static void pred4x4_down_left_rv40_nodown_c(uint8_t *src,
	const uint8_t *topright,
	ptrdiff_t stride)
	{
	LOAD_TOP_EDGE
	LOAD_TOP_RIGHT_EDGE
	LOAD_LEFT_EDGE

	src[0+0stride]=(t0 + t2 + 2t1 + 2 + l0 + l2 + 2*l1 + 2)>>3;
	src[1+0*stride]=
	src[0+1stride]=(t1 + t3 + 2t2 + 2 + l1 + l3 + 2*l2 + 2)>>3;
	src[2+0*stride]=
	src[1+1*stride]=
	src[0+2stride]=(t2 + t4 + 2t3 + 2 + l2 + 3*l3 + 2)>>3;
	src[3+0*stride]=
	src[2+1*stride]=
	src[1+2*stride]=
	src[0+3stride]=(t3 + t5 + 2t4 + 2 + l3*4 + 2)>>3;
	src[3+1*stride]=
	src[2+2*stride]=
	src[1+3stride]=(t4 + t6 + 2t5 + 2 + l3*4 + 2)>>3;
	src[3+2*stride]=
	src[2+3stride]=(t5 + t7 + 2t6 + 2 + l3*4 + 2)>>3;
	src[3+3stride]=(t6 + t7 + 1 + 2l3 + 1)>>2;
	}

	static void pred4x4_vertical_left_rv40(uint8_t src, const uint8_t topright,
	ptrdiff_t stride,
	const int l0, const int l1, const int l2,
	const int l3, const int l4)
	{
	LOAD_TOP_EDGE
	LOAD_TOP_RIGHT_EDGE

	src[0+0stride]=(2t0 + 2t1 + l1 + 2l2 + l3 + 4)>>3;
	src[1+0*stride]=
	src[0+2*stride]=(t1 + t2 + 1)>>1;
	src[2+0*stride]=
	src[1+2*stride]=(t2 + t3 + 1)>>1;
	src[3+0*stride]=
	src[2+2*stride]=(t3 + t4+ 1)>>1;
	src[3+2*stride]=(t4 + t5+ 1)>>1;
	src[0+1stride]=(t0 + 2t1 + t2 + l2 + 2*l3 + l4 + 4)>>3;
	src[1+1*stride]=
	src[0+3stride]=(t1 + 2t2 + t3 + 2)>>2;
	src[2+1*stride]=
	src[1+3stride]=(t2 + 2t3 + t4 + 2)>>2;
	src[3+1*stride]=
	src[2+3stride]=(t3 + 2t4 + t5 + 2)>>2;
	src[3+3stride]=(t4 + 2t5 + t6 + 2)>>2;
	}

	static void pred4x4_vertical_left_rv40_c(uint8_t src, const uint8_t topright,
	ptrdiff_t stride)
	{
	LOAD_LEFT_EDGE
	LOAD_DOWN_LEFT_EDGE

	pred4x4_vertical_left_rv40(src, topright, stride, l0, l1, l2, l3, l4);
	}

	static void pred4x4_vertical_left_rv40_nodown_c(uint8_t *src,
	const uint8_t *topright,
	ptrdiff_t stride)
	{
	LOAD_LEFT_EDGE

	pred4x4_vertical_left_rv40(src, topright, stride, l0, l1, l2, l3, l3);
	}

	static void pred4x4_vertical_left_vp8_c(uint8_t src, const uint8_t topright,
	ptrdiff_t stride)
	{
	LOAD_TOP_EDGE
	LOAD_TOP_RIGHT_EDGE

	src[0+0*stride]=(t0 + t1 + 1)>>1;
	src[1+0*stride]=
	src[0+2*stride]=(t1 + t2 + 1)>>1;
	src[2+0*stride]=
	src[1+2*stride]=(t2 + t3 + 1)>>1;
	src[3+0*stride]=
	src[2+2*stride]=(t3 + t4 + 1)>>1;
	src[0+1stride]=(t0 + 2t1 + t2 + 2)>>2;
	src[1+1*stride]=
	src[0+3stride]=(t1 + 2t2 + t3 + 2)>>2;
	src[2+1*stride]=
	src[1+3stride]=(t2 + 2t3 + t4 + 2)>>2;
	src[3+1*stride]=
	src[2+3stride]=(t3 + 2t4 + t5 + 2)>>2;
	src[3+2stride]=(t4 + 2t5 + t6 + 2)>>2;
	src[3+3stride]=(t5 + 2t6 + t7 + 2)>>2;
	}

	static void pred4x4_horizontal_up_rv40_c(uint8_t src, const uint8_t topright,
	ptrdiff_t stride)
	{
	LOAD_LEFT_EDGE
	LOAD_DOWN_LEFT_EDGE
	LOAD_TOP_EDGE
	LOAD_TOP_RIGHT_EDGE

	src[0+0stride]=(t1 + 2t2 + t3 + 2l0 + 2l1 + 4)>>3;
	src[1+0stride]=(t2 + 2t3 + t4 + l0 + 2*l1 + l2 + 4)>>3;
	src[2+0*stride]=
	src[0+1stride]=(t3 + 2t4 + t5 + 2l1 + 2l2 + 4)>>3;
	src[3+0*stride]=
	src[1+1stride]=(t4 + 2t5 + t6 + l1 + 2*l2 + l3 + 4)>>3;
	src[2+1*stride]=
	src[0+2stride]=(t5 + 2t6 + t7 + 2l2 + 2l3 + 4)>>3;
	src[3+1*stride]=
	src[1+2stride]=(t6 + 3t7 + l2 + 3*l3 + 4)>>3;
	src[3+2*stride]=
	src[1+3stride]=(l3 + 2l4 + l5 + 2)>>2;
	src[0+3*stride]=
	src[2+2*stride]=(t6 + t7 + l3 + l4 + 2)>>2;
	src[2+3*stride]=(l4 + l5 + 1)>>1;
	src[3+3stride]=(l4 + 2l5 + l6 + 2)>>2;
	}

	static void pred4x4_horizontal_up_rv40_nodown_c(uint8_t *src,
	const uint8_t *topright,
	ptrdiff_t stride)
	{
	LOAD_LEFT_EDGE
	LOAD_TOP_EDGE
	LOAD_TOP_RIGHT_EDGE

	src[0+0stride]=(t1 + 2t2 + t3 + 2l0 + 2l1 + 4)>>3;
	src[1+0stride]=(t2 + 2t3 + t4 + l0 + 2*l1 + l2 + 4)>>3;
	src[2+0*stride]=
	src[0+1stride]=(t3 + 2t4 + t5 + 2l1 + 2l2 + 4)>>3;
	src[3+0*stride]=
	src[1+1stride]=(t4 + 2t5 + t6 + l1 + 2*l2 + l3 + 4)>>3;
	src[2+1*stride]=
	src[0+2stride]=(t5 + 2t6 + t7 + 2l2 + 2l3 + 4)>>3;
	src[3+1*stride]=
	src[1+2stride]=(t6 + 3t7 + l2 + 3*l3 + 4)>>3;
	src[3+2*stride]=
	src[1+3*stride]=l3;
	src[0+3*stride]=
	src[2+2stride]=(t6 + t7 + 2l3 + 2)>>2;
	src[2+3*stride]=
	src[3+3*stride]=l3;
	}

	static void pred4x4_tm_vp8_c(uint8_t src, const uint8_t topright,
	ptrdiff_t stride)
	{
	const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP - src[-1-stride];
	uint8_t *top = src-stride;
	int y;

	for (y = 0; y < 4; y++) {
	const uint8_t *cm_in = cm + src[-1];
	src[0] = cm_in[top[0]];
	src[1] = cm_in[top[1]];
	src[2] = cm_in[top[2]];
	src[3] = cm_in[top[3]];
	src += stride;
	}
	}

	static void pred16x16_plane_svq3_c(uint8_t *src, ptrdiff_t stride)
	{
	pred16x16_plane_compat_8_c(src, stride, 1, 0);
	}

	static void pred16x16_plane_rv40_c(uint8_t *src, ptrdiff_t stride)
	{
	pred16x16_plane_compat_8_c(src, stride, 0, 1);
	}

	static void pred16x16_tm_vp8_c(uint8_t *src, ptrdiff_t stride)
	{
	const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP - src[-1-stride];
	uint8_t *top = src-stride;
	int y;

	for (y = 0; y < 16; y++) {
	const uint8_t *cm_in = cm + src[-1];
	src[0] = cm_in[top[0]];
	src[1] = cm_in[top[1]];
	src[2] = cm_in[top[2]];
	src[3] = cm_in[top[3]];
	src[4] = cm_in[top[4]];
	src[5] = cm_in[top[5]];
	src[6] = cm_in[top[6]];
	src[7] = cm_in[top[7]];
	src[8] = cm_in[top[8]];
	src[9] = cm_in[top[9]];
	src[10] = cm_in[top[10]];
	src[11] = cm_in[top[11]];
	src[12] = cm_in[top[12]];
	src[13] = cm_in[top[13]];
	src[14] = cm_in[top[14]];
	src[15] = cm_in[top[15]];
	src += stride;
	}
	}

	static void pred8x8_left_dc_rv40_c(uint8_t *src, ptrdiff_t stride)
	{
	int i;
	unsigned dc0;

	dc0=0;
	for(i=0;i<8; i++)
	dc0+= src[-1+i*stride];
	dc0= 0x01010101*((dc0 + 4)>>3);

	for(i=0; i<8; i++){
	((uint32_t)(src+istride))[0]=
	((uint32_t)(src+istride))[1]= dc0;
	}
	}

	static void pred8x8_top_dc_rv40_c(uint8_t *src, ptrdiff_t stride)
	{
	int i;
	unsigned dc0;

	dc0=0;
	for(i=0;i<8; i++)
	dc0+= src[i-stride];
	dc0= 0x01010101*((dc0 + 4)>>3);

	for(i=0; i<8; i++){
	((uint32_t)(src+istride))[0]=
	((uint32_t)(src+istride))[1]= dc0;
	}
	}

	static void pred8x8_dc_rv40_c(uint8_t *src, ptrdiff_t stride)
	{
	int i;
	unsigned dc0 = 0;

	for(i=0;i<4; i++){
	dc0+= src[-1+i*stride] + src[i-stride];
	dc0+= src[4+i-stride];
	dc0+= src[-1+(i+4)*stride];
	}
	dc0= 0x01010101*((dc0 + 8)>>4);

	for(i=0; i<4; i++){
	((uint32_t)(src+istride))[0]= dc0;
	((uint32_t)(src+istride))[1]= dc0;
	}
	for(i=4; i<8; i++){
	((uint32_t)(src+istride))[0]= dc0;
	((uint32_t)(src+istride))[1]= dc0;
	}
	}

	static void pred8x8_tm_vp8_c(uint8_t *src, ptrdiff_t stride)
	{
	const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP - src[-1-stride];
	uint8_t *top = src-stride;
	int y;

	for (y = 0; y < 8; y++) {
	const uint8_t *cm_in = cm + src[-1];
	src[0] = cm_in[top[0]];
	src[1] = cm_in[top[1]];
	src[2] = cm_in[top[2]];
	src[3] = cm_in[top[3]];
	src[4] = cm_in[top[4]];
	src[5] = cm_in[top[5]];
	src[6] = cm_in[top[6]];
	src[7] = cm_in[top[7]];
	src += stride;
	}
	}

	/**
	* Set the intra prediction function pointers.
	*/
	av_cold void ff_h264_pred_init(H264PredContext *h, int codec_id,
	const int bit_depth,
	int chroma_format_idc)
	{
	#undef FUNC
	#undef FUNCC
	#define FUNC(a, depth) a ## _ ## depth
	#define FUNCC(a, depth) a ## _ ## depth ## _c
	#define FUNCD(a) a ## _c

	#define H264_PRED(depth) \
	h->pred4x4[VERT_PRED ] = FUNCC(pred4x4_vertical, depth);\
	h->pred4x4[HOR_PRED ] = FUNCC(pred4x4_horizontal, depth);\
	h->pred4x4[DC_PRED ] = FUNCC(pred4x4_dc, depth);\
	h->pred4x4[DIAG_DOWN_LEFT_PRED ] = FUNCC(pred4x4_down_left, depth);\
	h->pred4x4[DIAG_DOWN_RIGHT_PRED] = FUNCC(pred4x4_down_right, depth);\
	h->pred4x4[VERT_RIGHT_PRED ] = FUNCC(pred4x4_vertical_right, depth);\
	h->pred4x4[HOR_DOWN_PRED ] = FUNCC(pred4x4_horizontal_down, depth);\
	h->pred4x4[VERT_LEFT_PRED ] = FUNCC(pred4x4_vertical_left, depth);\
	h->pred4x4[HOR_UP_PRED ] = FUNCC(pred4x4_horizontal_up, depth);\
	h->pred4x4[LEFT_DC_PRED ] = FUNCC(pred4x4_left_dc, depth);\
	h->pred4x4[TOP_DC_PRED ] = FUNCC(pred4x4_top_dc, depth);\
	if (depth > 8 \|\| codec_id != AV_CODEC_ID_VP8)\
	h->pred4x4[DC_128_PRED ] = FUNCC(pred4x4_128_dc, depth);\
	\
	h->pred8x8l[VERT_PRED ]= FUNCC(pred8x8l_vertical , depth);\
	h->pred8x8l[HOR_PRED ]= FUNCC(pred8x8l_horizontal , depth);\
	h->pred8x8l[DC_PRED ]= FUNCC(pred8x8l_dc , depth);\
	h->pred8x8l[DIAG_DOWN_LEFT_PRED ]= FUNCC(pred8x8l_down_left , depth);\
	h->pred8x8l[DIAG_DOWN_RIGHT_PRED]= FUNCC(pred8x8l_down_right , depth);\
	h->pred8x8l[VERT_RIGHT_PRED ]= FUNCC(pred8x8l_vertical_right , depth);\
	h->pred8x8l[HOR_DOWN_PRED ]= FUNCC(pred8x8l_horizontal_down , depth);\
	h->pred8x8l[VERT_LEFT_PRED ]= FUNCC(pred8x8l_vertical_left , depth);\
	h->pred8x8l[HOR_UP_PRED ]= FUNCC(pred8x8l_horizontal_up , depth);\
	h->pred8x8l[LEFT_DC_PRED ]= FUNCC(pred8x8l_left_dc , depth);\
	h->pred8x8l[TOP_DC_PRED ]= FUNCC(pred8x8l_top_dc , depth);\
	h->pred8x8l[DC_128_PRED ]= FUNCC(pred8x8l_128_dc , depth);\
	\
	if (chroma_format_idc <= 1) {\
	h->pred8x8[VERT_PRED8x8 ]= FUNCC(pred8x8_vertical , depth);\
	h->pred8x8[HOR_PRED8x8 ]= FUNCC(pred8x8_horizontal , depth);\
	h->pred8x8[PLANE_PRED8x8] = FUNCC(pred8x8_plane, depth);\
	} else {\
	h->pred8x8[VERT_PRED8x8 ]= FUNCC(pred8x16_vertical , depth);\
	h->pred8x8[HOR_PRED8x8 ]= FUNCC(pred8x16_horizontal , depth);\
	h->pred8x8[PLANE_PRED8x8] = FUNCC(pred8x16_plane, depth);\
	}\
	if (depth > 8 \|\| (codec_id != AV_CODEC_ID_RV40 && \
	codec_id != AV_CODEC_ID_VP7 && \
	codec_id != AV_CODEC_ID_VP8)) { \
	if (chroma_format_idc <= 1) {\
	h->pred8x8[DC_PRED8x8 ]= FUNCC(pred8x8_dc , depth);\
	h->pred8x8[LEFT_DC_PRED8x8]= FUNCC(pred8x8_left_dc , depth);\
	h->pred8x8[TOP_DC_PRED8x8 ]= FUNCC(pred8x8_top_dc , depth);\
	h->pred8x8[ALZHEIMER_DC_L0T_PRED8x8 ]= FUNC(pred8x8_mad_cow_dc_l0t, depth);\
	h->pred8x8[ALZHEIMER_DC_0LT_PRED8x8 ]= FUNC(pred8x8_mad_cow_dc_0lt, depth);\
	h->pred8x8[ALZHEIMER_DC_L00_PRED8x8 ]= FUNC(pred8x8_mad_cow_dc_l00, depth);\
	h->pred8x8[ALZHEIMER_DC_0L0_PRED8x8 ]= FUNC(pred8x8_mad_cow_dc_0l0, depth);\
	} else {\
	h->pred8x8[DC_PRED8x8 ]= FUNCC(pred8x16_dc , depth);\
	h->pred8x8[LEFT_DC_PRED8x8]= FUNCC(pred8x16_left_dc , depth);\
	h->pred8x8[TOP_DC_PRED8x8 ]= FUNCC(pred8x16_top_dc , depth);\
	h->pred8x8[ALZHEIMER_DC_L0T_PRED8x8 ]= FUNC(pred8x16_mad_cow_dc_l0t, depth);\
	h->pred8x8[ALZHEIMER_DC_0LT_PRED8x8 ]= FUNC(pred8x16_mad_cow_dc_0lt, depth);\
	h->pred8x8[ALZHEIMER_DC_L00_PRED8x8 ]= FUNC(pred8x16_mad_cow_dc_l00, depth);\
	h->pred8x8[ALZHEIMER_DC_0L0_PRED8x8 ]= FUNC(pred8x16_mad_cow_dc_0l0, depth);\
	}\
	}else{\
	h->pred8x8[DC_PRED8x8 ]= FUNCD(pred8x8_dc_rv40);\
	h->pred8x8[LEFT_DC_PRED8x8]= FUNCD(pred8x8_left_dc_rv40);\
	h->pred8x8[TOP_DC_PRED8x8 ]= FUNCD(pred8x8_top_dc_rv40);\
	}\
	if (chroma_format_idc <= 1) {\
	h->pred8x8[DC_128_PRED8x8 ]= FUNCC(pred8x8_128_dc , depth);\
	} else {\
	h->pred8x8[DC_128_PRED8x8 ]= FUNCC(pred8x16_128_dc , depth);\
	}\
	\
	h->pred16x16[DC_PRED8x8 ]= FUNCC(pred16x16_dc , depth);\
	h->pred16x16[VERT_PRED8x8 ]= FUNCC(pred16x16_vertical , depth);\
	h->pred16x16[HOR_PRED8x8 ]= FUNCC(pred16x16_horizontal , depth);\
	h->pred16x16[PLANE_PRED8x8 ]= FUNCC(pred16x16_plane , depth);\
	h->pred16x16[LEFT_DC_PRED8x8]= FUNCC(pred16x16_left_dc , depth);\
	h->pred16x16[TOP_DC_PRED8x8 ]= FUNCC(pred16x16_top_dc , depth);\
	h->pred16x16[DC_128_PRED8x8 ]= FUNCC(pred16x16_128_dc , depth);\
	\
	/* special lossless h/v prediction for H.264 */ \
	h->pred4x4_add [VERT_PRED ]= FUNCC(pred4x4_vertical_add , depth);\
	h->pred4x4_add [ HOR_PRED ]= FUNCC(pred4x4_horizontal_add , depth);\
	h->pred8x8l_add [VERT_PRED ]= FUNCC(pred8x8l_vertical_add , depth);\
	h->pred8x8l_add [ HOR_PRED ]= FUNCC(pred8x8l_horizontal_add , depth);\
	h->pred8x8l_filter_add [VERT_PRED ]= FUNCC(pred8x8l_vertical_filter_add , depth);\
	h->pred8x8l_filter_add [ HOR_PRED ]= FUNCC(pred8x8l_horizontal_filter_add , depth);\
	if (chroma_format_idc <= 1) {\
	h->pred8x8_add[VERT_PRED8x8] = FUNCC(pred8x8_vertical_add, depth);\
	h->pred8x8_add[ HOR_PRED8x8] = FUNCC(pred8x8_horizontal_add, depth);\
	} else {\
	h->pred8x8_add [VERT_PRED8x8]= FUNCC(pred8x16_vertical_add , depth);\
	h->pred8x8_add [ HOR_PRED8x8]= FUNCC(pred8x16_horizontal_add , depth);\
	}\
	h->pred16x16_add[VERT_PRED8x8]= FUNCC(pred16x16_vertical_add , depth);\
	h->pred16x16_add[ HOR_PRED8x8]= FUNCC(pred16x16_horizontal_add , depth);\

	switch (bit_depth) {
	case 9:
	H264_PRED(9)
	break;
	case 10:
	H264_PRED(10)
	break;
	case 12:
	H264_PRED(12)
	break;
	case 14:
	H264_PRED(14)
	break;
	default:
	av_assert0(bit_depth<=8);
	H264_PRED(8)
	switch (codec_id) {
	case AV_CODEC_ID_SVQ3:
	h->pred4x4[DIAG_DOWN_LEFT_PRED] = FUNCD(pred4x4_down_left_svq3);
	h->pred16x16[PLANE_PRED8x8 ] = FUNCD(pred16x16_plane_svq3);
	break;
	case AV_CODEC_ID_RV40:
	h->pred4x4[DIAG_DOWN_LEFT_PRED] = FUNCD(pred4x4_down_left_rv40);
	h->pred4x4[VERT_LEFT_PRED ] = FUNCD(pred4x4_vertical_left_rv40);
	h->pred4x4[HOR_UP_PRED ] = FUNCD(pred4x4_horizontal_up_rv40);
	h->pred4x4[DIAG_DOWN_LEFT_PRED_RV40_NODOWN] = FUNCD(pred4x4_down_left_rv40_nodown);
	h->pred4x4[HOR_UP_PRED_RV40_NODOWN] = FUNCD(pred4x4_horizontal_up_rv40_nodown);
	h->pred4x4[VERT_LEFT_PRED_RV40_NODOWN] = FUNCD(pred4x4_vertical_left_rv40_nodown);
	h->pred16x16[PLANE_PRED8x8 ] = FUNCD(pred16x16_plane_rv40);
	break;
	case AV_CODEC_ID_VP7:
	case AV_CODEC_ID_VP8:
	h->pred4x4[VERT_PRED ] = FUNCD(pred4x4_vertical_vp8);
	h->pred4x4[HOR_PRED ] = FUNCD(pred4x4_horizontal_vp8);
	h->pred4x4[VERT_LEFT_PRED ] = FUNCD(pred4x4_vertical_left_vp8);
	h->pred4x4[TM_VP8_PRED ] = FUNCD(pred4x4_tm_vp8);
	h->pred4x4[VERT_VP8_PRED ] = FUNCC(pred4x4_vertical, 8);
	h->pred4x4[DC_127_PRED ] = FUNCD(pred4x4_127_dc);
	h->pred4x4[DC_129_PRED ] = FUNCD(pred4x4_129_dc);
	h->pred4x4[HOR_VP8_PRED ] = FUNCC(pred4x4_horizontal, 8);
	h->pred8x8[PLANE_PRED8x8 ] = FUNCD(pred8x8_tm_vp8);
	h->pred8x8[DC_127_PRED8x8 ] = FUNCC(pred8x8_127_dc, 8);
	h->pred8x8[DC_129_PRED8x8 ] = FUNCC(pred8x8_129_dc, 8);
	h->pred16x16[PLANE_PRED8x8 ] = FUNCD(pred16x16_tm_vp8);
	h->pred16x16[DC_127_PRED8x8] = FUNCC(pred16x16_127_dc, 8);
	h->pred16x16[DC_129_PRED8x8] = FUNCC(pred16x16_129_dc, 8);
	break;
	}
	break;
	}

	#if ARCH_AARCH64
	ff_h264_pred_init_aarch64(h, codec_id, bit_depth, chroma_format_idc);
	#elif ARCH_ARM
	ff_h264_pred_init_arm(h, codec_id, bit_depth, chroma_format_idc);
	#elif ARCH_X86
	ff_h264_pred_init_x86(h, codec_id, bit_depth, chroma_format_idc);
	#elif ARCH_MIPS
	ff_h264_pred_init_mips(h, codec_id, bit_depth, chroma_format_idc);
	#elif ARCH_LOONGARCH
	ff_h264_pred_init_loongarch(h, codec_id, bit_depth, chroma_format_idc);
	#endif
	}