/*****************************************************************************

 * mc.c: motion compensation

 *****************************************************************************

 * Copyright (C) 2003-2025 x264 project

 *

 * Authors: Laurent Aimar <fenrir@via.ecp.fr>

 *          Loren Merritt <lorenm@u.washington.edu>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program 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 General Public License for more details.

 *

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

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.

 *

 * This program is also available under a commercial proprietary license.

 * For more information, contact us at licensing@x264.com.

 *****************************************************************************/

#include "common.h"

#if HAVE_MMX

#include "x86/mc.h"

#endif

#if HAVE_ALTIVEC

#include "ppc/mc.h"

#endif

#if HAVE_ARMV6

#include "arm/mc.h"

#endif

#if HAVE_AARCH64

#include "aarch64/mc.h"

#endif

#if HAVE_MSA

#include "mips/mc.h"

#endif

#if HAVE_LSX

#   include "loongarch/mc.h"

#endif

static inline void pixel_avg( pixel *dst,  intptr_t i_dst_stride,

                              pixel *src1, intptr_t i_src1_stride,

                              pixel *src2, intptr_t i_src2_stride, int i_width, int i_height )

{

    for( int y = 0; y < i_height; y++ )

    {

        for( int x = 0; x < i_width; x++ )

            dst[x] = ( src1[x] + src2[x] + 1 ) >> 1;

        dst  += i_dst_stride;

        src1 += i_src1_stride;

        src2 += i_src2_stride;

    }

}

static inline void pixel_avg_wxh( pixel *dst,  intptr_t i_dst,

                                  pixel *src1, intptr_t i_src1,

                                  pixel *src2, intptr_t i_src2, int width, int height )

{

    for( int y = 0; y < height; y++ )

    {

        for( int x = 0; x < width; x++ )

            dst[x] = ( src1[x] + src2[x] + 1 ) >> 1;

        src1 += i_src1;

        src2 += i_src2;

        dst += i_dst;

    }

}

/* Implicit weighted bipred only:

 * assumes log2_denom = 5, offset = 0, weight1 + weight2 = 64 */

static inline void pixel_avg_weight_wxh( pixel *dst,  intptr_t i_dst,

                                         pixel *src1, intptr_t i_src1,

                                         pixel *src2, intptr_t i_src2, int width, int height, int i_weight1 )

{

    int i_weight2 = 64 - i_weight1;

    for( int y = 0; y<height; y++, dst += i_dst, src1 += i_src1, src2 += i_src2 )

        for( int x = 0; x<width; x++ )

            dst[x] = x264_clip_pixel( (src1[x]*i_weight1 + src2[x]*i_weight2 + (1<<5)) >> 6 );

}

#undef op_scale2

#define PIXEL_AVG_C( name, width, height ) \

static void name( pixel *pix1, intptr_t i_stride_pix1, \

                  pixel *pix2, intptr_t i_stride_pix2, \

                  pixel *pix3, intptr_t i_stride_pix3, int weight ) \

{ \

    if( weight == 32 ) \

        pixel_avg_wxh( pix1, i_stride_pix1, pix2, i_stride_pix2, pix3, i_stride_pix3, width, height ); \

    else \

        pixel_avg_weight_wxh( pix1, i_stride_pix1, pix2, i_stride_pix2, pix3, i_stride_pix3, width, height, weight ); \

}

Unexecuted instantiation: mc.c:pixel_avg_16x16

Unexecuted instantiation: mc.c:pixel_avg_16x8

Unexecuted instantiation: mc.c:pixel_avg_8x16

Unexecuted instantiation: mc.c:pixel_avg_8x8

Unexecuted instantiation: mc.c:pixel_avg_8x4

Unexecuted instantiation: mc.c:pixel_avg_4x16

Unexecuted instantiation: mc.c:pixel_avg_4x8

Unexecuted instantiation: mc.c:pixel_avg_4x4

Unexecuted instantiation: mc.c:pixel_avg_4x2

Unexecuted instantiation: mc.c:pixel_avg_2x8

Unexecuted instantiation: mc.c:pixel_avg_2x4

Unexecuted instantiation: mc.c:pixel_avg_2x2

PIXEL_AVG_C( pixel_avg_16x16, 16, 16 )

PIXEL_AVG_C( pixel_avg_16x8,  16, 8 )

PIXEL_AVG_C( pixel_avg_8x16,  8, 16 )

PIXEL_AVG_C( pixel_avg_8x8,   8, 8 )

PIXEL_AVG_C( pixel_avg_8x4,   8, 4 )

PIXEL_AVG_C( pixel_avg_4x16,  4, 16 )

PIXEL_AVG_C( pixel_avg_4x8,   4, 8 )

PIXEL_AVG_C( pixel_avg_4x4,   4, 4 )

PIXEL_AVG_C( pixel_avg_4x2,   4, 2 )

PIXEL_AVG_C( pixel_avg_2x8,   2, 8 )

PIXEL_AVG_C( pixel_avg_2x4,   2, 4 )

PIXEL_AVG_C( pixel_avg_2x2,   2, 2 )

static void weight_cache( x264_t *h, x264_weight_t *w )

{

    w->weightfn = h->mc.weight;

}

#define opscale(x) dst[x] = x264_clip_pixel( ((src[x] * scale + (1<<(denom - 1))) >> denom) + offset )

#define opscale_noden(x) dst[x] = x264_clip_pixel( src[x] * scale + offset )

static void mc_weight( pixel *dst, intptr_t i_dst_stride, pixel *src, intptr_t i_src_stride,

                       const x264_weight_t *weight, int i_width, int i_height )

{

    int offset = weight->i_offset * (1 << (BIT_DEPTH-8));

    int scale = weight->i_scale;

    int denom = weight->i_denom;

    if( denom >= 1 )

    {

        for( int y = 0; y < i_height; y++, dst += i_dst_stride, src += i_src_stride )

            for( int x = 0; x < i_width; x++ )

                opscale( x );

    }

    else

    {

        for( int y = 0; y < i_height; y++, dst += i_dst_stride, src += i_src_stride )

            for( int x = 0; x < i_width; x++ )

                opscale_noden( x );

    }

}

#define MC_WEIGHT_C( name, width ) \

static void name( pixel *dst, intptr_t i_dst_stride, pixel *src, intptr_t i_src_stride, const x264_weight_t *weight, int height ) \

{ \

    mc_weight( dst, i_dst_stride, src, i_src_stride, weight, width, height );\

}

Unexecuted instantiation: mc.c:mc_weight_w2

Unexecuted instantiation: mc.c:mc_weight_w4

Unexecuted instantiation: mc.c:mc_weight_w8

Unexecuted instantiation: mc.c:mc_weight_w12

Unexecuted instantiation: mc.c:mc_weight_w16

Unexecuted instantiation: mc.c:mc_weight_w20

MC_WEIGHT_C( mc_weight_w20, 20 )

MC_WEIGHT_C( mc_weight_w16, 16 )

MC_WEIGHT_C( mc_weight_w12, 12 )

MC_WEIGHT_C( mc_weight_w8,   8 )

MC_WEIGHT_C( mc_weight_w4,   4 )

MC_WEIGHT_C( mc_weight_w2,   2 )

static weight_fn_t mc_weight_wtab[6] =

{

    mc_weight_w2,

    mc_weight_w4,

    mc_weight_w8,

    mc_weight_w12,

    mc_weight_w16,

    mc_weight_w20,

};

static void mc_copy( pixel *src, intptr_t i_src_stride, pixel *dst, intptr_t i_dst_stride, int i_width, int i_height )

{

    for( int y = 0; y < i_height; y++ )

    {

        memcpy( dst, src, i_width * SIZEOF_PIXEL );

        src += i_src_stride;

        dst += i_dst_stride;

    }

}

#define TAPFILTER(pix, d) ((pix)[x-2*d] + (pix)[x+3*d] - 5*((pix)[x-d] + (pix)[x+2*d]) + 20*((pix)[x] + (pix)[x+d]))

static void hpel_filter( pixel *dsth, pixel *dstv, pixel *dstc, pixel *src,

                         intptr_t stride, int width, int height, int16_t *buf )

{

    const int pad = (BIT_DEPTH > 9) ? (-10 * PIXEL_MAX) : 0;

    for( int y = 0; y < height; y++ )

    {

        for( int x = -2; x < width+3; x++ )

        {

            int v = TAPFILTER(src,stride);

            dstv[x] = x264_clip_pixel( (v + 16) >> 5 );

            /* transform v for storage in a 16-bit integer */

            buf[x+2] = v + pad;

        }

        for( int x = 0; x < width; x++ )

            dstc[x] = x264_clip_pixel( (TAPFILTER(buf+2,1) - 32*pad + 512) >> 10 );

        for( int x = 0; x < width; x++ )

            dsth[x] = x264_clip_pixel( (TAPFILTER(src,1) + 16) >> 5 );

        dsth += stride;

        dstv += stride;

        dstc += stride;

        src += stride;

    }

}

static void mc_luma( pixel *dst,    intptr_t i_dst_stride,

                     pixel *src[4], intptr_t i_src_stride,

                     int mvx, int mvy,

                     int i_width, int i_height, const x264_weight_t *weight )

{

    int qpel_idx = ((mvy&3)<<2) + (mvx&3);

    int offset = (mvy>>2)*i_src_stride + (mvx>>2);

    pixel *src1 = src[x264_hpel_ref0[qpel_idx]] + offset + ((mvy&3) == 3) * i_src_stride;

    if( qpel_idx & 5 ) /* qpel interpolation needed */

    {

        pixel *src2 = src[x264_hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);

        pixel_avg( dst, i_dst_stride, src1, i_src_stride,

                   src2, i_src_stride, i_width, i_height );

        if( weight->weightfn )

            mc_weight( dst, i_dst_stride, dst, i_dst_stride, weight, i_width, i_height );

    }

    else if( weight->weightfn )

        mc_weight( dst, i_dst_stride, src1, i_src_stride, weight, i_width, i_height );

    else

        mc_copy( src1, i_src_stride, dst, i_dst_stride, i_width, i_height );

}

static pixel *get_ref( pixel *dst,   intptr_t *i_dst_stride,

                       pixel *src[4], intptr_t i_src_stride,

                       int mvx, int mvy,

                       int i_width, int i_height, const x264_weight_t *weight )

{

    int qpel_idx = ((mvy&3)<<2) + (mvx&3);

    int offset = (mvy>>2)*i_src_stride + (mvx>>2);

    pixel *src1 = src[x264_hpel_ref0[qpel_idx]] + offset + ((mvy&3) == 3) * i_src_stride;

    if( qpel_idx & 5 ) /* qpel interpolation needed */

    {

        pixel *src2 = src[x264_hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);

        pixel_avg( dst, *i_dst_stride, src1, i_src_stride,

                   src2, i_src_stride, i_width, i_height );

        if( weight->weightfn )

            mc_weight( dst, *i_dst_stride, dst, *i_dst_stride, weight, i_width, i_height );

        return dst;

    }

    else if( weight->weightfn )

    {

        mc_weight( dst, *i_dst_stride, src1, i_src_stride, weight, i_width, i_height );

        return dst;

    }

    else

    {

        *i_dst_stride = i_src_stride;

        return src1;

    }

}

/* full chroma mc (ie until 1/8 pixel)*/

static void mc_chroma( pixel *dstu, pixel *dstv, intptr_t i_dst_stride,

                       pixel *src, intptr_t i_src_stride,

                       int mvx, int mvy,

                       int i_width, int i_height )

{

    pixel *srcp;

    int d8x = mvx&0x07;

    int d8y = mvy&0x07;

    int cA = (8-d8x)*(8-d8y);

    int cB = d8x    *(8-d8y);

    int cC = (8-d8x)*d8y;

    int cD = d8x    *d8y;

    src += (mvy >> 3) * i_src_stride + (mvx >> 3)*2;

    srcp = &src[i_src_stride];

    for( int y = 0; y < i_height; y++ )

    {

        for( int x = 0; x < i_width; x++ )

        {

            dstu[x] = ( cA*src[2*x]  + cB*src[2*x+2] +

                        cC*srcp[2*x] + cD*srcp[2*x+2] + 32 ) >> 6;

            dstv[x] = ( cA*src[2*x+1]  + cB*src[2*x+3] +

                        cC*srcp[2*x+1] + cD*srcp[2*x+3] + 32 ) >> 6;

        }

        dstu += i_dst_stride;

        dstv += i_dst_stride;

        src   = srcp;

        srcp += i_src_stride;

    }

}

#define MC_COPY(W) \

static void mc_copy_w##W( pixel *dst, intptr_t i_dst, pixel *src, intptr_t i_src, int i_height ) \

{ \

    mc_copy( src, i_src, dst, i_dst, W, i_height ); \

}

Unexecuted instantiation: mc.c:mc_copy_w16

Unexecuted instantiation: mc.c:mc_copy_w8

Unexecuted instantiation: mc.c:mc_copy_w4

MC_COPY( 16 )

MC_COPY( 8 )

MC_COPY( 4 )

void x264_plane_copy_c( pixel *dst, intptr_t i_dst,

                        pixel *src, intptr_t i_src, int w, int h )

{

    while( h-- )

    {

        memcpy( dst, src, w * SIZEOF_PIXEL );

        dst += i_dst;

        src += i_src;

    }

}

Unexecuted instantiation: x264_8_plane_copy_c

Unexecuted instantiation: x264_10_plane_copy_c

void x264_plane_copy_swap_c( pixel *dst, intptr_t i_dst,

                             pixel *src, intptr_t i_src, int w, int h )

{

    for( int y=0; y<h; y++, dst+=i_dst, src+=i_src )

        for( int x=0; x<2*w; x+=2 )

        {

            dst[x]   = src[x+1];

            dst[x+1] = src[x];

        }

}

Unexecuted instantiation: x264_8_plane_copy_swap_c

Unexecuted instantiation: x264_10_plane_copy_swap_c

void x264_plane_copy_interleave_c( pixel *dst,  intptr_t i_dst,

                                   pixel *srcu, intptr_t i_srcu,

                                   pixel *srcv, intptr_t i_srcv, int w, int h )

{

    for( int y=0; y<h; y++, dst+=i_dst, srcu+=i_srcu, srcv+=i_srcv )

        for( int x=0; x<w; x++ )

        {

            dst[2*x]   = srcu[x];

            dst[2*x+1] = srcv[x];

        }

}

Unexecuted instantiation: x264_8_plane_copy_interleave_c

Unexecuted instantiation: x264_10_plane_copy_interleave_c

void x264_plane_copy_deinterleave_c( pixel *dsta, intptr_t i_dsta, pixel *dstb, intptr_t i_dstb,

                                     pixel *src,  intptr_t i_src, int w, int h )

{

    for( int y=0; y<h; y++, dsta+=i_dsta, dstb+=i_dstb, src+=i_src )

        for( int x=0; x<w; x++ )

        {

            dsta[x] = src[2*x];

            dstb[x] = src[2*x+1];

        }

}

Unexecuted instantiation: x264_8_plane_copy_deinterleave_c

Unexecuted instantiation: x264_10_plane_copy_deinterleave_c

static void plane_copy_deinterleave_rgb_c( pixel *dsta, intptr_t i_dsta,

                                           pixel *dstb, intptr_t i_dstb,

                                           pixel *dstc, intptr_t i_dstc,

                                           pixel *src,  intptr_t i_src, int pw, int w, int h )

{

    for( int y=0; y<h; y++, dsta+=i_dsta, dstb+=i_dstb, dstc+=i_dstc, src+=i_src )

    {

        for( int x=0; x<w; x++ )

        {

            dsta[x] = src[x*pw];

            dstb[x] = src[x*pw+1];

            dstc[x] = src[x*pw+2];

        }

    }

}

#if WORDS_BIGENDIAN

static ALWAYS_INLINE uint32_t v210_endian_fix32( uint32_t x )

{

    return (x<<24) + ((x<<8)&0xff0000) + ((x>>8)&0xff00) + (x>>24);

}

#else

#define v210_endian_fix32(x) (x)

#endif

static void plane_copy_deinterleave_v210_c( pixel *dsty, intptr_t i_dsty,

                                            pixel *dstc, intptr_t i_dstc,

                                            uint32_t *src, intptr_t i_src, int w, int h )

{

    for( int l = 0; l < h; l++ )

    {

        pixel *dsty0 = dsty;

        pixel *dstc0 = dstc;

        uint32_t *src0 = src;

        for( int n = 0; n < w; n += 3 )

        {

            uint32_t s = v210_endian_fix32( *src0++ );

            *dstc0++ = s & 0x03FF;

            *dsty0++ = (s >> 10) & 0x03FF;

            *dstc0++ = (s >> 20) & 0x03FF;

            s = v210_endian_fix32( *src0++ );

            *dsty0++ = s & 0x03FF;

            *dstc0++ = (s >> 10) & 0x03FF;

            *dsty0++ = (s >> 20) & 0x03FF;

        }

        dsty += i_dsty;

        dstc += i_dstc;

        src  += i_src;

    }

}

static void store_interleave_chroma( pixel *dst, intptr_t i_dst, pixel *srcu, pixel *srcv, int height )

{

    for( int y=0; y<height; y++, dst+=i_dst, srcu+=FDEC_STRIDE, srcv+=FDEC_STRIDE )

        for( int x=0; x<8; x++ )

        {

            dst[2*x]   = srcu[x];

            dst[2*x+1] = srcv[x];

        }

}

static void load_deinterleave_chroma_fenc( pixel *dst, pixel *src, intptr_t i_src, int height )

{

    x264_plane_copy_deinterleave_c( dst, FENC_STRIDE, dst+FENC_STRIDE/2, FENC_STRIDE, src, i_src, 8, height );

}

static void load_deinterleave_chroma_fdec( pixel *dst, pixel *src, intptr_t i_src, int height )

{

    x264_plane_copy_deinterleave_c( dst, FDEC_STRIDE, dst+FDEC_STRIDE/2, FDEC_STRIDE, src, i_src, 8, height );

}

static void prefetch_fenc_null( pixel *pix_y,  intptr_t stride_y,

                                pixel *pix_uv, intptr_t stride_uv, int mb_x )

{}

static void prefetch_ref_null( pixel *pix, intptr_t stride, int parity )

{}

static void memzero_aligned( void * dst, size_t n )

{

    memset( dst, 0, n );

}

static void integral_init4h( uint16_t *sum, pixel *pix, intptr_t stride )

{

    int v = pix[0]+pix[1]+pix[2]+pix[3];

    for( int x = 0; x < stride-4; x++ )

    {

        sum[x] = (uint16_t)(v + sum[x-stride]);

        v += pix[x+4] - pix[x];

    }

}

static void integral_init8h( uint16_t *sum, pixel *pix, intptr_t stride )

{

    int v = pix[0]+pix[1]+pix[2]+pix[3]+pix[4]+pix[5]+pix[6]+pix[7];

    for( int x = 0; x < stride-8; x++ )

    {

        sum[x] = (uint16_t)(v + sum[x-stride]);

        v += pix[x+8] - pix[x];

    }

}

static void integral_init4v( uint16_t *sum8, uint16_t *sum4, intptr_t stride )

{

    for( int x = 0; x < stride-8; x++ )

        sum4[x] = (uint16_t)(sum8[x+4*stride] - sum8[x]);

    for( int x = 0; x < stride-8; x++ )

        sum8[x] = (uint16_t)(sum8[x+8*stride] + sum8[x+8*stride+4] - sum8[x] - sum8[x+4]);

}

static void integral_init8v( uint16_t *sum8, intptr_t stride )

{

    for( int x = 0; x < stride-8; x++ )

        sum8[x] = (uint16_t)(sum8[x+8*stride] - sum8[x]);

}

void x264_frame_init_lowres( x264_t *h, x264_frame_t *frame )

{

    pixel *src = frame->plane[0];

    int i_stride = frame->i_stride[0];

    int i_height = frame->i_lines[0];

    int i_width  = frame->i_width[0];

    // duplicate last row and column so that their interpolation doesn't have to be special-cased

    for( int y = 0; y < i_height; y++ )

        src[i_width+y*i_stride] = src[i_width-1+y*i_stride];

    memcpy( src+i_stride*i_height, src+i_stride*(i_height-1), (i_width+1) * SIZEOF_PIXEL );

    h->mc.frame_init_lowres_core( src, frame->lowres[0], frame->lowres[1], frame->lowres[2], frame->lowres[3],

                                  i_stride, frame->i_stride_lowres, frame->i_width_lowres, frame->i_lines_lowres );

    x264_frame_expand_border_lowres( frame );

    memset( frame->i_cost_est, -1, sizeof(frame->i_cost_est) );

    for( int y = 0; y < h->param.i_bframe + 2; y++ )

        for( int x = 0; x < h->param.i_bframe + 2; x++ )

            frame->i_row_satds[y][x][0] = -1;

    for( int y = 0; y <= !!h->param.i_bframe; y++ )

        for( int x = 0; x <= h->param.i_bframe; x++ )

            frame->lowres_mvs[y][x][0][0] = 0x7FFF;

}

Unexecuted instantiation: x264_8_frame_init_lowres

Unexecuted instantiation: x264_10_frame_init_lowres

static void frame_init_lowres_core( pixel *src0, pixel *dst0, pixel *dsth, pixel *dstv, pixel *dstc,

                                    intptr_t src_stride, intptr_t dst_stride, int width, int height )

{

    for( int y = 0; y < height; y++ )

    {

        pixel *src1 = src0+src_stride;

        pixel *src2 = src1+src_stride;

        for( int x = 0; x<width; x++ )

        {

            // slower than naive bilinear, but matches asm

#define FILTER(a,b,c,d) ((((a+b+1)>>1)+((c+d+1)>>1)+1)>>1)

            dst0[x] = FILTER(src0[2*x  ], src1[2*x  ], src0[2*x+1], src1[2*x+1]);

            dsth[x] = FILTER(src0[2*x+1], src1[2*x+1], src0[2*x+2], src1[2*x+2]);

            dstv[x] = FILTER(src1[2*x  ], src2[2*x  ], src1[2*x+1], src2[2*x+1]);

            dstc[x] = FILTER(src1[2*x+1], src2[2*x+1], src1[2*x+2], src2[2*x+2]);

#undef FILTER

        }

        src0 += src_stride*2;

        dst0 += dst_stride;

        dsth += dst_stride;

        dstv += dst_stride;

        dstc += dst_stride;

    }

}

/* Estimate the total amount of influence on future quality that could be had if we

 * were to improve the reference samples used to inter predict any given macroblock. */

static void mbtree_propagate_cost( int16_t *dst, uint16_t *propagate_in, uint16_t *intra_costs,

                                   uint16_t *inter_costs, uint16_t *inv_qscales, float *fps_factor, int len )

{

    float fps = *fps_factor;

    for( int i = 0; i < len; i++ )

    {

        int intra_cost = intra_costs[i];

        int inter_cost = X264_MIN(intra_costs[i], inter_costs[i] & LOWRES_COST_MASK);

        float propagate_intra  = intra_cost * inv_qscales[i];

        float propagate_amount = propagate_in[i] + propagate_intra*fps;

        float propagate_num    = intra_cost - inter_cost;

        float propagate_denom  = intra_cost;

        dst[i] = X264_MIN((int)(propagate_amount * propagate_num / propagate_denom + 0.5f), 32767);

    }

}

static void mbtree_propagate_list( x264_t *h, uint16_t *ref_costs, int16_t (*mvs)[2],

                                   int16_t *propagate_amount, uint16_t *lowres_costs,

                                   int bipred_weight, int mb_y, int len, int list )

{

    unsigned stride = h->mb.i_mb_stride;

    unsigned width = h->mb.i_mb_width;

    unsigned height = h->mb.i_mb_height;

    for( int i = 0; i < len; i++ )

    {

        int lists_used = lowres_costs[i]>>LOWRES_COST_SHIFT;

        if( !(lists_used & (1 << list)) )

            continue;

        int listamount = propagate_amount[i];

        /* Apply bipred weighting. */

        if( lists_used == 3 )

            listamount = (listamount * bipred_weight + 32) >> 6;

        /* Early termination for simple case of mv0. */

        if( !M32( mvs[i] ) )

        {

            MC_CLIP_ADD( ref_costs[mb_y*stride + i], listamount );

            continue;

        }

        int x = mvs[i][0];

        int y = mvs[i][1];

        unsigned mbx = (unsigned)((x>>5)+i);

        unsigned mby = (unsigned)((y>>5)+mb_y);

        unsigned idx0 = mbx + mby * stride;

        unsigned idx2 = idx0 + stride;

        x &= 31;

        y &= 31;

        int idx0weight = (32-y)*(32-x);

        int idx1weight = (32-y)*x;

        int idx2weight = y*(32-x);

        int idx3weight = y*x;

        idx0weight = (idx0weight * listamount + 512) >> 10;

        idx1weight = (idx1weight * listamount + 512) >> 10;

        idx2weight = (idx2weight * listamount + 512) >> 10;

        idx3weight = (idx3weight * listamount + 512) >> 10;

        if( mbx < width-1 && mby < height-1 )

        {

            MC_CLIP_ADD( ref_costs[idx0+0], idx0weight );

            MC_CLIP_ADD( ref_costs[idx0+1], idx1weight );

            MC_CLIP_ADD( ref_costs[idx2+0], idx2weight );

            MC_CLIP_ADD( ref_costs[idx2+1], idx3weight );

        }

        else

        {

            /* Note: this takes advantage of unsigned representation to

             * catch negative mbx/mby. */

            if( mby < height )

            {

                if( mbx < width )

                    MC_CLIP_ADD( ref_costs[idx0+0], idx0weight );

                if( mbx+1 < width )

                    MC_CLIP_ADD( ref_costs[idx0+1], idx1weight );

            }

            if( mby+1 < height )

            {

                if( mbx < width )

                    MC_CLIP_ADD( ref_costs[idx2+0], idx2weight );

                if( mbx+1 < width )

                    MC_CLIP_ADD( ref_costs[idx2+1], idx3weight );

            }

        }

    }

}

/* Conversion between float and Q8.8 fixed point (big-endian) for storage */

static void mbtree_fix8_pack( uint16_t *dst, float *src, int count )

{

    for( int i = 0; i < count; i++ )

        dst[i] = endian_fix16( (int16_t)(src[i] * 256.0f) );

}

static void mbtree_fix8_unpack( float *dst, uint16_t *src, int count )

{

    for( int i = 0; i < count; i++ )

        dst[i] = (int16_t)endian_fix16( src[i] ) * (1.0f/256.0f);

}

void x264_mc_init( uint32_t cpu, x264_mc_functions_t *pf, int cpu_independent )

{

    pf->mc_luma   = mc_luma;

    pf->get_ref   = get_ref;

    pf->mc_chroma = mc_chroma;

    pf->avg[PIXEL_16x16]= pixel_avg_16x16;

    pf->avg[PIXEL_16x8] = pixel_avg_16x8;

    pf->avg[PIXEL_8x16] = pixel_avg_8x16;

    pf->avg[PIXEL_8x8]  = pixel_avg_8x8;

    pf->avg[PIXEL_8x4]  = pixel_avg_8x4;

    pf->avg[PIXEL_4x16] = pixel_avg_4x16;

    pf->avg[PIXEL_4x8]  = pixel_avg_4x8;

    pf->avg[PIXEL_4x4]  = pixel_avg_4x4;

    pf->avg[PIXEL_4x2]  = pixel_avg_4x2;

    pf->avg[PIXEL_2x8]  = pixel_avg_2x8;

    pf->avg[PIXEL_2x4]  = pixel_avg_2x4;

    pf->avg[PIXEL_2x2]  = pixel_avg_2x2;

    pf->weight    = mc_weight_wtab;

    pf->offsetadd = mc_weight_wtab;

    pf->offsetsub = mc_weight_wtab;

    pf->weight_cache = weight_cache;

    pf->copy_16x16_unaligned = mc_copy_w16;

    pf->copy[PIXEL_16x16] = mc_copy_w16;

    pf->copy[PIXEL_8x8]   = mc_copy_w8;

    pf->copy[PIXEL_4x4]   = mc_copy_w4;

    pf->store_interleave_chroma       = store_interleave_chroma;

    pf->load_deinterleave_chroma_fenc = load_deinterleave_chroma_fenc;

    pf->load_deinterleave_chroma_fdec = load_deinterleave_chroma_fdec;

    pf->plane_copy = x264_plane_copy_c;

    pf->plane_copy_swap = x264_plane_copy_swap_c;

    pf->plane_copy_interleave = x264_plane_copy_interleave_c;

    pf->plane_copy_deinterleave = x264_plane_copy_deinterleave_c;

    pf->plane_copy_deinterleave_yuyv = x264_plane_copy_deinterleave_c;

    pf->plane_copy_deinterleave_rgb = plane_copy_deinterleave_rgb_c;

    pf->plane_copy_deinterleave_v210 = plane_copy_deinterleave_v210_c;

    pf->hpel_filter = hpel_filter;

    pf->prefetch_fenc_400 = prefetch_fenc_null;

    pf->prefetch_fenc_420 = prefetch_fenc_null;

    pf->prefetch_fenc_422 = prefetch_fenc_null;

    pf->prefetch_ref  = prefetch_ref_null;

    pf->memcpy_aligned = memcpy;

    pf->memzero_aligned = memzero_aligned;

    pf->frame_init_lowres_core = frame_init_lowres_core;

    pf->integral_init4h = integral_init4h;

    pf->integral_init8h = integral_init8h;

    pf->integral_init4v = integral_init4v;

    pf->integral_init8v = integral_init8v;

    pf->mbtree_propagate_cost = mbtree_propagate_cost;

    pf->mbtree_propagate_list = mbtree_propagate_list;

    pf->mbtree_fix8_pack      = mbtree_fix8_pack;

    pf->mbtree_fix8_unpack    = mbtree_fix8_unpack;

#if HAVE_MMX

    x264_mc_init_mmx( cpu, pf );

#endif

#if HAVE_ALTIVEC

    if( cpu&X264_CPU_ALTIVEC )

        x264_mc_init_altivec( pf );

#endif

#if HAVE_ARMV6

    x264_mc_init_arm( cpu, pf );

#endif

#if HAVE_AARCH64

    x264_mc_init_aarch64( cpu, pf );

#endif

#if HAVE_MSA

    if( cpu&X264_CPU_MSA )

        x264_mc_init_mips( cpu, pf );

#endif

#if HAVE_LSX

    x264_mc_init_loongarch( cpu, pf );

#endif

    if( cpu_independent )

    {

        pf->mbtree_propagate_cost = mbtree_propagate_cost;

        pf->mbtree_propagate_list = mbtree_propagate_list;

    }

}

Unexecuted instantiation: x264_8_mc_init

Unexecuted instantiation: x264_10_mc_init

void x264_frame_filter( x264_t *h, x264_frame_t *frame, int mb_y, int b_end )

{

    const int b_interlaced = PARAM_INTERLACED;

    int start = mb_y*16 - 8; // buffer = 4 for deblock + 3 for 6tap, rounded to 8

    int height = (b_end ? frame->i_lines[0] + 16*PARAM_INTERLACED : (mb_y+b_interlaced)*16) + 8;

    if( mb_y & b_interlaced )

        return;

    for( int p = 0; p < (CHROMA444 ? 3 : 1); p++ )

    {

        int stride = frame->i_stride[p];

        const int width = frame->i_width[p];

        int offs = start*stride - 8; // buffer = 3 for 6tap, aligned to 8 for simd

        if( !b_interlaced || h->mb.b_adaptive_mbaff )

            h->mc.hpel_filter(

                frame->filtered[p][1] + offs,

                frame->filtered[p][2] + offs,

                frame->filtered[p][3] + offs,

                frame->plane[p] + offs,

                stride, width + 16, height - start,

                h->scratch_buffer );

        if( b_interlaced )

        {

            /* MC must happen between pixels in the same field. */

            stride = frame->i_stride[p] << 1;

            start = (mb_y*16 >> 1) - 8;

            int height_fld = ((b_end ? frame->i_lines[p] : mb_y*16) >> 1) + 8;

            offs = start*stride - 8;

            for( int i = 0; i < 2; i++, offs += frame->i_stride[p] )

            {

                h->mc.hpel_filter(

                    frame->filtered_fld[p][1] + offs,

                    frame->filtered_fld[p][2] + offs,

                    frame->filtered_fld[p][3] + offs,

                    frame->plane_fld[p] + offs,

                    stride, width + 16, height_fld - start,

                    h->scratch_buffer );

            }

        }

    }

    /* generate integral image:

     * frame->integral contains 2 planes. in the upper plane, each element is

     * the sum of an 8x8 pixel region with top-left corner on that point.

     * in the lower plane, 4x4 sums (needed only with --partitions p4x4). */

    if( frame->integral )

    {

        int stride = frame->i_stride[0];

        if( start < 0 )

        {

            memset( frame->integral - PADV * stride - PADH_ALIGN, 0, stride * sizeof(uint16_t) );

            start = -PADV;

        }

        if( b_end )

            height += PADV-9;

        for( int y = start; y < height; y++ )

        {

            pixel    *pix  = frame->plane[0] + y * stride - PADH_ALIGN;

            uint16_t *sum8 = frame->integral + (y+1) * stride - PADH_ALIGN;

            uint16_t *sum4;

            if( h->frames.b_have_sub8x8_esa )

            {

                h->mc.integral_init4h( sum8, pix, stride );

                sum8 -= 8*stride;

                sum4 = sum8 + stride * (frame->i_lines[0] + PADV*2);

                if( y >= 8-PADV )

                    h->mc.integral_init4v( sum8, sum4, stride );

            }

            else

            {

                h->mc.integral_init8h( sum8, pix, stride );

                if( y >= 8-PADV )

                    h->mc.integral_init8v( sum8-8*stride, stride );

            }

        }

    }

}

Unexecuted instantiation: x264_8_frame_filter

Unexecuted instantiation: x264_10_frame_filter