/*
 * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
 *
 * This file is part of Libav.
 *
 * Libav 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.
 *
 * Libav 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 Libav; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/arm/asm.S"
#include "neon.S"

        /* H.264 loop filter */

.macro  h264_loop_filter_start
        ldr             r12, [sp]
        tst             r2,  r2
        ldr             r12, [r12]
        it              ne
        tstne           r3,  r3
        vmov.32         d24[0], r12
        and             r12, r12, r12, lsl #16
        it              eq
        bxeq            lr
        ands            r12, r12, r12, lsl #8
        it              lt
        bxlt            lr
.endm

.macro  h264_loop_filter_luma
        vdup.8          q11, r2         @ alpha
        vmovl.u8        q12, d24
        vabd.u8         q6,  q8,  q0    @ abs(p0 - q0)
        vmovl.u16       q12, d24
        vabd.u8         q14, q9,  q8    @ abs(p1 - p0)
        vsli.16         q12, q12, #8
        vabd.u8         q15, q1,  q0    @ abs(q1 - q0)
        vsli.32         q12, q12, #16
        vclt.u8         q6,  q6,  q11   @ < alpha
        vdup.8          q11, r3         @ beta
        vclt.s8         q7,  q12, #0
        vclt.u8         q14, q14, q11   @ < beta
        vclt.u8         q15, q15, q11   @ < beta
        vbic            q6,  q6,  q7
        vabd.u8         q4,  q10, q8    @ abs(p2 - p0)
        vand            q6,  q6,  q14
        vabd.u8         q5,  q2,  q0    @ abs(q2 - q0)
        vclt.u8         q4,  q4,  q11   @ < beta
        vand            q6,  q6,  q15
        vclt.u8         q5,  q5,  q11   @ < beta
        vand            q4,  q4,  q6
        vand            q5,  q5,  q6
        vand            q12, q12, q6
        vrhadd.u8       q14, q8,  q0
        vsub.i8         q6,  q12, q4
        vqadd.u8        q7,  q9,  q12
        vhadd.u8        q10, q10, q14
        vsub.i8         q6,  q6,  q5
        vhadd.u8        q14, q2,  q14
        vmin.u8         q7,  q7,  q10
        vqsub.u8        q11, q9,  q12
        vqadd.u8        q2,  q1,  q12
        vmax.u8         q7,  q7,  q11
        vqsub.u8        q11, q1,  q12
        vmin.u8         q14, q2,  q14
        vmovl.u8        q2,  d0
        vmax.u8         q14, q14, q11
        vmovl.u8        q10, d1
        vsubw.u8        q2,  q2,  d16
        vsubw.u8        q10, q10, d17
        vshl.i16        q2,  q2,  #2
        vshl.i16        q10, q10, #2
        vaddw.u8        q2,  q2,  d18
        vaddw.u8        q10, q10, d19
        vsubw.u8        q2,  q2,  d2
        vsubw.u8        q10, q10, d3
        vrshrn.i16      d4,  q2,  #3
        vrshrn.i16      d5,  q10, #3
        vbsl            q4,  q7,  q9
        vbsl            q5,  q14, q1
        vneg.s8         q7,  q6
        vmovl.u8        q14, d16
        vmin.s8         q2,  q2,  q6
        vmovl.u8        q6,  d17
        vmax.s8         q2,  q2,  q7
        vmovl.u8        q11, d0
        vmovl.u8        q12, d1
        vaddw.s8        q14, q14, d4
        vaddw.s8        q6,  q6,  d5
        vsubw.s8        q11, q11, d4
        vsubw.s8        q12, q12, d5
        vqmovun.s16     d16, q14
        vqmovun.s16     d17, q6
        vqmovun.s16     d0,  q11
        vqmovun.s16     d1,  q12
.endm

function ff_h264_v_loop_filter_luma_neon, export=1
        h264_loop_filter_start

        vld1.8          {d0, d1},  [r0,:128], r1
        vld1.8          {d2, d3},  [r0,:128], r1
        vld1.8          {d4, d5},  [r0,:128], r1
        sub             r0,  r0,  r1, lsl #2
        sub             r0,  r0,  r1, lsl #1
        vld1.8          {d20,d21}, [r0,:128], r1
        vld1.8          {d18,d19}, [r0,:128], r1
        vld1.8          {d16,d17}, [r0,:128], r1

        vpush           {d8-d15}

        h264_loop_filter_luma

        sub             r0,  r0,  r1, lsl #1
        vst1.8          {d8, d9},  [r0,:128], r1
        vst1.8          {d16,d17}, [r0,:128], r1
        vst1.8          {d0, d1},  [r0,:128], r1
        vst1.8          {d10,d11}, [r0,:128]

        vpop            {d8-d15}
        bx              lr
endfunc

function ff_h264_h_loop_filter_luma_neon, export=1
        h264_loop_filter_start

        sub             r0,  r0,  #4
        vld1.8          {d6},  [r0], r1
        vld1.8          {d20}, [r0], r1
        vld1.8          {d18}, [r0], r1
        vld1.8          {d16}, [r0], r1
        vld1.8          {d0},  [r0], r1
        vld1.8          {d2},  [r0], r1
        vld1.8          {d4},  [r0], r1
        vld1.8          {d26}, [r0], r1
        vld1.8          {d7},  [r0], r1
        vld1.8          {d21}, [r0], r1
        vld1.8          {d19}, [r0], r1
        vld1.8          {d17}, [r0], r1
        vld1.8          {d1},  [r0], r1
        vld1.8          {d3},  [r0], r1
        vld1.8          {d5},  [r0], r1
        vld1.8          {d27}, [r0], r1

        transpose_8x8   q3, q10, q9, q8, q0, q1, q2, q13

        vpush           {d8-d15}

        h264_loop_filter_luma

        transpose_4x4   q4, q8, q0, q5

        sub             r0,  r0,  r1, lsl #4
        add             r0,  r0,  #2
        vst1.32         {d8[0]},  [r0], r1
        vst1.32         {d16[0]}, [r0], r1
        vst1.32         {d0[0]},  [r0], r1
        vst1.32         {d10[0]}, [r0], r1
        vst1.32         {d8[1]},  [r0], r1
        vst1.32         {d16[1]}, [r0], r1
        vst1.32         {d0[1]},  [r0], r1
        vst1.32         {d10[1]}, [r0], r1
        vst1.32         {d9[0]},  [r0], r1
        vst1.32         {d17[0]}, [r0], r1
        vst1.32         {d1[0]},  [r0], r1
        vst1.32         {d11[0]}, [r0], r1
        vst1.32         {d9[1]},  [r0], r1
        vst1.32         {d17[1]}, [r0], r1
        vst1.32         {d1[1]},  [r0], r1
        vst1.32         {d11[1]}, [r0], r1

        vpop            {d8-d15}
        bx              lr
endfunc

.macro  h264_loop_filter_chroma
        vdup.8          d22, r2         @ alpha
        vmovl.u8        q12, d24
        vabd.u8         d26, d16, d0    @ abs(p0 - q0)
        vmovl.u8        q2,  d0
        vabd.u8         d28, d18, d16   @ abs(p1 - p0)
        vsubw.u8        q2,  q2,  d16
        vsli.16         d24, d24, #8
        vshl.i16        q2,  q2,  #2
        vabd.u8         d30, d2,  d0    @ abs(q1 - q0)
        vaddw.u8        q2,  q2,  d18
        vclt.u8         d26, d26, d22   @ < alpha
        vsubw.u8        q2,  q2,  d2
        vdup.8          d22, r3         @ beta
        vrshrn.i16      d4,  q2,  #3
        vclt.u8         d28, d28, d22   @ < beta
        vclt.u8         d30, d30, d22   @ < beta
        vmin.s8         d4,  d4,  d24
        vneg.s8         d25, d24
        vand            d26, d26, d28
        vmax.s8         d4,  d4,  d25
        vand            d26, d26, d30
        vmovl.u8        q11, d0
        vand            d4,  d4,  d26
        vmovl.u8        q14, d16
        vaddw.s8        q14, q14, d4
        vsubw.s8        q11, q11, d4
        vqmovun.s16     d16, q14
        vqmovun.s16     d0,  q11
.endm

function ff_h264_v_loop_filter_chroma_neon, export=1
        h264_loop_filter_start

        sub             r0,  r0,  r1, lsl #1
        vld1.8          {d18}, [r0,:64], r1
        vld1.8          {d16}, [r0,:64], r1
        vld1.8          {d0},  [r0,:64], r1
        vld1.8          {d2},  [r0,:64]

        h264_loop_filter_chroma

        sub             r0,  r0,  r1, lsl #1
        vst1.8          {d16}, [r0,:64], r1
        vst1.8          {d0},  [r0,:64], r1

        bx              lr
endfunc

function ff_h264_h_loop_filter_chroma_neon, export=1
        h264_loop_filter_start

        sub             r0,  r0,  #2
        vld1.32         {d18[0]}, [r0], r1
        vld1.32         {d16[0]}, [r0], r1
        vld1.32         {d0[0]},  [r0], r1
        vld1.32         {d2[0]},  [r0], r1
        vld1.32         {d18[1]}, [r0], r1
        vld1.32         {d16[1]}, [r0], r1
        vld1.32         {d0[1]},  [r0], r1
        vld1.32         {d2[1]},  [r0], r1

        vtrn.16         d18, d0
        vtrn.16         d16, d2
        vtrn.8          d18, d16
        vtrn.8          d0,  d2

        h264_loop_filter_chroma

        vtrn.16         d18, d0
        vtrn.16         d16, d2
        vtrn.8          d18, d16
        vtrn.8          d0,  d2

        sub             r0,  r0,  r1, lsl #3
        vst1.32         {d18[0]}, [r0], r1
        vst1.32         {d16[0]}, [r0], r1
        vst1.32         {d0[0]},  [r0], r1
        vst1.32         {d2[0]},  [r0], r1
        vst1.32         {d18[1]}, [r0], r1
        vst1.32         {d16[1]}, [r0], r1
        vst1.32         {d0[1]},  [r0], r1
        vst1.32         {d2[1]},  [r0], r1

        bx              lr
endfunc

        /* H.264 qpel MC */

.macro  lowpass_const   r
        movw            \r,  #5
        movt            \r,  #20
        vmov.32         d6[0], \r
.endm

.macro  lowpass_8       r0,  r1,  r2,  r3,  d0,  d1,  narrow=1
  .if \narrow
        t0 .req q0
        t1 .req q8
  .else
        t0 .req \d0
        t1 .req \d1
  .endif
        vext.8          d2,  \r0, \r1, #2
        vext.8          d3,  \r0, \r1, #3
        vaddl.u8        q1,  d2,  d3
        vext.8          d4,  \r0, \r1, #1
        vext.8          d5,  \r0, \r1, #4
        vaddl.u8        q2,  d4,  d5
        vext.8          d30, \r0, \r1, #5
        vaddl.u8        t0,  \r0, d30
        vext.8          d18, \r2, \r3, #2
        vmla.i16        t0,  q1,  d6[1]
        vext.8          d19, \r2, \r3, #3
        vaddl.u8        q9,  d18, d19
        vext.8          d20, \r2, \r3, #1
        vmls.i16        t0,  q2,  d6[0]
        vext.8          d21, \r2, \r3, #4
        vaddl.u8        q10, d20, d21
        vext.8          d31, \r2, \r3, #5
        vaddl.u8        t1,  \r2, d31
        vmla.i16        t1,  q9,  d6[1]
        vmls.i16        t1,  q10, d6[0]
  .if \narrow
        vqrshrun.s16    \d0, t0,  #5
        vqrshrun.s16    \d1, t1,  #5
  .endif
        .unreq  t0
        .unreq  t1
.endm

.macro  lowpass_8_1     r0,  r1,  d0,  narrow=1
  .if \narrow
        t0 .req q0
  .else
        t0 .req \d0
  .endif
        vext.8          d2,  \r0, \r1, #2
        vext.8          d3,  \r0, \r1, #3
        vaddl.u8        q1,  d2,  d3
        vext.8          d4,  \r0, \r1, #1
        vext.8          d5,  \r0, \r1, #4
        vaddl.u8        q2,  d4,  d5
        vext.8          d30, \r0, \r1, #5
        vaddl.u8        t0,  \r0, d30
        vmla.i16        t0,  q1,  d6[1]
        vmls.i16        t0,  q2,  d6[0]
  .if \narrow
        vqrshrun.s16    \d0, t0,  #5
  .endif
        .unreq  t0
.endm

.macro  lowpass_8.16    r0,  r1,  l0,  h0,  l1,  h1,  d
        vext.16         q1,  \r0, \r1, #2
        vext.16         q0,  \r0, \r1, #3
        vaddl.s16       q9,  d2,  d0
        vext.16         q2,  \r0, \r1, #1
        vaddl.s16       q1,  d3,  d1
        vext.16         q3,  \r0, \r1, #4
        vaddl.s16       q10, d4,  d6
        vext.16         \r1, \r0, \r1, #5
        vaddl.s16       q2,  d5,  d7
        vaddl.s16       q0,  \h0, \h1
        vaddl.s16       q8,  \l0, \l1

        vshl.i32        q3,  q9,  #4
        vshl.i32        q9,  q9,  #2
        vshl.i32        q15, q10, #2
        vadd.i32        q9,  q9,  q3
        vadd.i32        q10, q10, q15

        vshl.i32        q3,  q1,  #4
        vshl.i32        q1,  q1,  #2
        vshl.i32        q15, q2,  #2
        vadd.i32        q1,  q1,  q3
        vadd.i32        q2,  q2,  q15

        vadd.i32        q9,  q9,  q8
        vsub.i32        q9,  q9,  q10

        vadd.i32        q1,  q1,  q0
        vsub.i32        q1,  q1,  q2

        vrshrn.s32      d18, q9,  #10
        vrshrn.s32      d19, q1,  #10

        vqmovun.s16     \d,  q9
.endm

function put_h264_qpel16_h_lowpass_neon_packed
        mov             r4,  lr
        mov             r12, #16
        mov             r3,  #8
        bl              put_h264_qpel8_h_lowpass_neon
        sub             r1,  r1,  r2, lsl #4
        add             r1,  r1,  #8
        mov             r12, #16
        mov             lr,  r4
        b               put_h264_qpel8_h_lowpass_neon
endfunc

.macro  h264_qpel_h_lowpass type
function \type\()_h264_qpel16_h_lowpass_neon
        push            {lr}
        mov             r12, #16
        bl              \type\()_h264_qpel8_h_lowpass_neon
        sub             r0,  r0,  r3, lsl #4
        sub             r1,  r1,  r2, lsl #4
        add             r0,  r0,  #8
        add             r1,  r1,  #8
        mov             r12, #16
        pop             {lr}
endfunc

function \type\()_h264_qpel8_h_lowpass_neon
1:      vld1.8          {d0, d1},  [r1], r2
        vld1.8          {d16,d17}, [r1], r2
        subs            r12, r12, #2
        lowpass_8       d0,  d1,  d16, d17, d0,  d16
  .ifc \type,avg
        vld1.8          {d2},     [r0,:64], r3
        vrhadd.u8       d0,  d0,  d2
        vld1.8          {d3},     [r0,:64]
        vrhadd.u8       d16, d16, d3
        sub             r0,  r0,  r3
  .endif
        vst1.8          {d0},     [r0,:64], r3
        vst1.8          {d16},    [r0,:64], r3
        bne             1b
        bx              lr
endfunc
.endm

        h264_qpel_h_lowpass put
        h264_qpel_h_lowpass avg

.macro  h264_qpel_h_lowpass_l2 type
function \type\()_h264_qpel16_h_lowpass_l2_neon
        push            {lr}
        mov             r12, #16
        bl              \type\()_h264_qpel8_h_lowpass_l2_neon
        sub             r0,  r0,  r2, lsl #4
        sub             r1,  r1,  r2, lsl #4
        sub             r3,  r3,  r2, lsl #4
        add             r0,  r0,  #8
        add             r1,  r1,  #8
        add             r3,  r3,  #8
        mov             r12, #16
        pop             {lr}
endfunc

function \type\()_h264_qpel8_h_lowpass_l2_neon
1:      vld1.8          {d0, d1},  [r1], r2
        vld1.8          {d16,d17}, [r1], r2
        vld1.8          {d28},     [r3], r2
        vld1.8          {d29},     [r3], r2
        subs            r12, r12, #2
        lowpass_8       d0,  d1,  d16, d17, d0,  d1
        vrhadd.u8       q0,  q0,  q14
  .ifc \type,avg
        vld1.8          {d2},      [r0,:64], r2
        vrhadd.u8       d0,  d0,  d2
        vld1.8          {d3},      [r0,:64]
        vrhadd.u8       d1,  d1,  d3
        sub             r0,  r0,  r2
  .endif
        vst1.8          {d0},      [r0,:64], r2
        vst1.8          {d1},      [r0,:64], r2
        bne             1b
        bx              lr
endfunc
.endm

        h264_qpel_h_lowpass_l2 put
        h264_qpel_h_lowpass_l2 avg

function put_h264_qpel16_v_lowpass_neon_packed
        mov             r4,  lr
        mov             r2,  #8
        bl              put_h264_qpel8_v_lowpass_neon
        sub             r1,  r1,  r3, lsl #2
        bl              put_h264_qpel8_v_lowpass_neon
        sub             r1,  r1,  r3, lsl #4
        sub             r1,  r1,  r3, lsl #2
        add             r1,  r1,  #8
        bl              put_h264_qpel8_v_lowpass_neon
        sub             r1,  r1,  r3, lsl #2
        mov             lr,  r4
        b               put_h264_qpel8_v_lowpass_neon
endfunc

.macro  h264_qpel_v_lowpass type
function \type\()_h264_qpel16_v_lowpass_neon
        mov             r4,  lr
        bl              \type\()_h264_qpel8_v_lowpass_neon
        sub             r1,  r1,  r3, lsl #2
        bl              \type\()_h264_qpel8_v_lowpass_neon
        sub             r0,  r0,  r2, lsl #4
        add             r0,  r0,  #8
        sub             r1,  r1,  r3, lsl #4
        sub             r1,  r1,  r3, lsl #2
        add             r1,  r1,  #8
        bl              \type\()_h264_qpel8_v_lowpass_neon
        sub             r1,  r1,  r3, lsl #2
        mov             lr,  r4
endfunc

function \type\()_h264_qpel8_v_lowpass_neon
        vld1.8          {d8},  [r1], r3
        vld1.8          {d10}, [r1], r3
        vld1.8          {d12}, [r1], r3
        vld1.8          {d14}, [r1], r3
        vld1.8          {d22}, [r1], r3
        vld1.8          {d24}, [r1], r3
        vld1.8          {d26}, [r1], r3
        vld1.8          {d28}, [r1], r3
        vld1.8          {d9},  [r1], r3
        vld1.8          {d11}, [r1], r3
        vld1.8          {d13}, [r1], r3
        vld1.8          {d15}, [r1], r3
        vld1.8          {d23}, [r1]

        transpose_8x8   q4,  q5,  q6,  q7,  q11, q12, q13, q14
        lowpass_8       d8,  d9,  d10, d11, d8,  d10
        lowpass_8       d12, d13, d14, d15, d12, d14
        lowpass_8       d22, d23, d24, d25, d22, d24
        lowpass_8       d26, d27, d28, d29, d26, d28
        transpose_8x8   d8,  d10, d12, d14, d22, d24, d26, d28

  .ifc \type,avg
        vld1.8          {d9},  [r0,:64], r2
        vrhadd.u8       d8,  d8,  d9
        vld1.8          {d11}, [r0,:64], r2
        vrhadd.u8       d10, d10, d11
        vld1.8          {d13}, [r0,:64], r2
        vrhadd.u8       d12, d12, d13
        vld1.8          {d15}, [r0,:64], r2
        vrhadd.u8       d14, d14, d15
        vld1.8          {d23}, [r0,:64], r2
        vrhadd.u8       d22, d22, d23
        vld1.8          {d25}, [r0,:64], r2
        vrhadd.u8       d24, d24, d25
        vld1.8          {d27}, [r0,:64], r2
        vrhadd.u8       d26, d26, d27
        vld1.8          {d29}, [r0,:64], r2
        vrhadd.u8       d28, d28, d29
        sub             r0,  r0,  r2,  lsl #3
  .endif

        vst1.8          {d8},  [r0,:64], r2
        vst1.8          {d10}, [r0,:64], r2
        vst1.8          {d12}, [r0,:64], r2
        vst1.8          {d14}, [r0,:64], r2
        vst1.8          {d22}, [r0,:64], r2
        vst1.8          {d24}, [r0,:64], r2
        vst1.8          {d26}, [r0,:64], r2
        vst1.8          {d28}, [r0,:64], r2

        bx              lr
endfunc
.endm

        h264_qpel_v_lowpass put
        h264_qpel_v_lowpass avg

.macro  h264_qpel_v_lowpass_l2 type
function \type\()_h264_qpel16_v_lowpass_l2_neon
        mov             r4,  lr
        bl              \type\()_h264_qpel8_v_lowpass_l2_neon
        sub             r1,  r1,  r3, lsl #2
        bl              \type\()_h264_qpel8_v_lowpass_l2_neon
        sub             r0,  r0,  r3, lsl #4
        sub             r12, r12, r2, lsl #4
        add             r0,  r0,  #8
        add             r12, r12, #8
        sub             r1,  r1,  r3, lsl #4
        sub             r1,  r1,  r3, lsl #2
        add             r1,  r1,  #8
        bl              \type\()_h264_qpel8_v_lowpass_l2_neon
        sub             r1,  r1,  r3, lsl #2
        mov             lr,  r4
endfunc

function \type\()_h264_qpel8_v_lowpass_l2_neon
        vld1.8          {d8},  [r1], r3
        vld1.8          {d10}, [r1], r3
        vld1.8          {d12}, [r1], r3
        vld1.8          {d14}, [r1], r3
        vld1.8          {d22}, [r1], r3
        vld1.8          {d24}, [r1], r3
        vld1.8          {d26}, [r1], r3
        vld1.8          {d28}, [r1], r3
        vld1.8          {d9},  [r1], r3
        vld1.8          {d11}, [r1], r3
        vld1.8          {d13}, [r1], r3
        vld1.8          {d15}, [r1], r3
        vld1.8          {d23}, [r1]

        transpose_8x8   q4,  q5,  q6,  q7,  q11, q12, q13, q14
        lowpass_8       d8,  d9,  d10, d11, d8,  d9
        lowpass_8       d12, d13, d14, d15, d12, d13
        lowpass_8       d22, d23, d24, d25, d22, d23
        lowpass_8       d26, d27, d28, d29, d26, d27
        transpose_8x8   d8,  d9,  d12, d13, d22, d23, d26, d27

        vld1.8          {d0},  [r12], r2
        vld1.8          {d1},  [r12], r2
        vld1.8          {d2},  [r12], r2
        vld1.8          {d3},  [r12], r2
        vld1.8          {d4},  [r12], r2
        vrhadd.u8       q0,  q0,  q4
        vld1.8          {d5},  [r12], r2
        vrhadd.u8       q1,  q1,  q6
        vld1.8          {d10}, [r12], r2
        vrhadd.u8       q2,  q2,  q11
        vld1.8          {d11}, [r12], r2
        vrhadd.u8       q5,  q5,  q13

  .ifc \type,avg
        vld1.8          {d16}, [r0,:64], r3
        vrhadd.u8       d0,  d0,  d16
        vld1.8          {d17}, [r0,:64], r3
        vrhadd.u8       d1,  d1,  d17
        vld1.8          {d16}, [r0,:64], r3
        vrhadd.u8       d2,  d2,  d16
        vld1.8          {d17}, [r0,:64], r3
        vrhadd.u8       d3,  d3,  d17
        vld1.8          {d16}, [r0,:64], r3
        vrhadd.u8       d4,  d4,  d16
        vld1.8          {d17}, [r0,:64], r3
        vrhadd.u8       d5,  d5,  d17
        vld1.8          {d16}, [r0,:64], r3
        vrhadd.u8       d10, d10, d16
        vld1.8          {d17}, [r0,:64], r3
        vrhadd.u8       d11, d11, d17
        sub             r0,  r0,  r3,  lsl #3
  .endif

        vst1.8          {d0},  [r0,:64], r3
        vst1.8          {d1},  [r0,:64], r3
        vst1.8          {d2},  [r0,:64], r3
        vst1.8          {d3},  [r0,:64], r3
        vst1.8          {d4},  [r0,:64], r3
        vst1.8          {d5},  [r0,:64], r3
        vst1.8          {d10}, [r0,:64], r3
        vst1.8          {d11}, [r0,:64], r3

        bx              lr
endfunc
.endm

        h264_qpel_v_lowpass_l2 put
        h264_qpel_v_lowpass_l2 avg

function put_h264_qpel8_hv_lowpass_neon_top
        lowpass_const   r12
        mov             r12, #12
1:      vld1.8          {d0, d1},  [r1], r3
        vld1.8          {d16,d17}, [r1], r3
        subs            r12, r12, #2
        lowpass_8       d0,  d1,  d16, d17, q11, q12, narrow=0
        vst1.8          {d22-d25}, [r4,:128]!
        bne             1b

        vld1.8          {d0, d1},  [r1]
        lowpass_8_1     d0,  d1,  q12, narrow=0

        mov             r12, #-16
        add             r4,  r4,  r12
        vld1.8          {d30,d31}, [r4,:128], r12
        vld1.8          {d20,d21}, [r4,:128], r12
        vld1.8          {d18,d19}, [r4,:128], r12
        vld1.8          {d16,d17}, [r4,:128], r12
        vld1.8          {d14,d15}, [r4,:128], r12
        vld1.8          {d12,d13}, [r4,:128], r12
        vld1.8          {d10,d11}, [r4,:128], r12
        vld1.8          {d8, d9},  [r4,:128], r12
        vld1.8          {d6, d7},  [r4,:128], r12
        vld1.8          {d4, d5},  [r4,:128], r12
        vld1.8          {d2, d3},  [r4,:128], r12
        vld1.8          {d0, d1},  [r4,:128]

        swap4           d1,  d3,  d5,  d7,  d8,  d10, d12, d14
        transpose16_4x4 q0,  q1,  q2,  q3,  q4,  q5,  q6,  q7

        swap4           d17, d19, d21, d31, d24, d26, d28, d22
        transpose16_4x4 q8,  q9,  q10, q15, q12, q13, q14, q11

        vst1.8          {d30,d31}, [r4,:128]!
        vst1.8          {d6, d7},  [r4,:128]!
        vst1.8          {d20,d21}, [r4,:128]!
        vst1.8          {d4, d5},  [r4,:128]!
        vst1.8          {d18,d19}, [r4,:128]!
        vst1.8          {d2, d3},  [r4,:128]!
        vst1.8          {d16,d17}, [r4,:128]!
        vst1.8          {d0, d1},  [r4,:128]

        lowpass_8.16    q4,  q12, d8,  d9,  d24, d25, d8
        lowpass_8.16    q5,  q13, d10, d11, d26, d27, d9
        lowpass_8.16    q6,  q14, d12, d13, d28, d29, d10
        lowpass_8.16    q7,  q11, d14, d15, d22, d23, d11

        vld1.8          {d16,d17}, [r4,:128], r12
        vld1.8          {d30,d31}, [r4,:128], r12
        lowpass_8.16    q8,  q15, d16, d17, d30, d31, d12
        vld1.8          {d16,d17}, [r4,:128], r12
        vld1.8          {d30,d31}, [r4,:128], r12
        lowpass_8.16    q8,  q15, d16, d17, d30, d31, d13
        vld1.8          {d16,d17}, [r4,:128], r12
        vld1.8          {d30,d31}, [r4,:128], r12
        lowpass_8.16    q8,  q15, d16, d17, d30, d31, d14
        vld1.8          {d16,d17}, [r4,:128], r12
        vld1.8          {d30,d31}, [r4,:128]
        lowpass_8.16    q8,  q15, d16, d17, d30, d31, d15

        transpose_8x8   d12, d13, d14, d15, d8,  d9,  d10, d11

        bx              lr
endfunc

.macro  h264_qpel8_hv_lowpass type
function \type\()_h264_qpel8_hv_lowpass_neon
        mov             r10, lr
        bl              put_h264_qpel8_hv_lowpass_neon_top
  .ifc \type,avg
        vld1.8          {d0},      [r0,:64], r2
        vrhadd.u8       d12, d12, d0
        vld1.8          {d1},      [r0,:64], r2
        vrhadd.u8       d13, d13, d1
        vld1.8          {d2},      [r0,:64], r2
        vrhadd.u8       d14, d14, d2
        vld1.8          {d3},      [r0,:64], r2
        vrhadd.u8       d15, d15, d3
        vld1.8          {d4},      [r0,:64], r2
        vrhadd.u8       d8,  d8,  d4
        vld1.8          {d5},      [r0,:64], r2
        vrhadd.u8       d9,  d9,  d5
        vld1.8          {d6},      [r0,:64], r2
        vrhadd.u8       d10, d10, d6
        vld1.8          {d7},      [r0,:64], r2
        vrhadd.u8       d11, d11, d7
        sub             r0,  r0,  r2,  lsl #3
  .endif

        vst1.8          {d12},     [r0,:64], r2
        vst1.8          {d13},     [r0,:64], r2
        vst1.8          {d14},     [r0,:64], r2
        vst1.8          {d15},     [r0,:64], r2
        vst1.8          {d8},      [r0,:64], r2
        vst1.8          {d9},      [r0,:64], r2
        vst1.8          {d10},     [r0,:64], r2
        vst1.8          {d11},     [r0,:64], r2

        mov             lr,  r10
        bx              lr
endfunc
.endm

        h264_qpel8_hv_lowpass put
        h264_qpel8_hv_lowpass avg

.macro  h264_qpel8_hv_lowpass_l2 type
function \type\()_h264_qpel8_hv_lowpass_l2_neon
        mov             r10, lr
        bl              put_h264_qpel8_hv_lowpass_neon_top

        vld1.8          {d0, d1},  [r2,:128]!
        vld1.8          {d2, d3},  [r2,:128]!
        vrhadd.u8       q0,  q0,  q6
        vld1.8          {d4, d5},  [r2,:128]!
        vrhadd.u8       q1,  q1,  q7
        vld1.8          {d6, d7},  [r2,:128]!
        vrhadd.u8       q2,  q2,  q4
        vrhadd.u8       q3,  q3,  q5
  .ifc \type,avg
        vld1.8          {d16},     [r0,:64], r3
        vrhadd.u8       d0,  d0,  d16
        vld1.8          {d17},     [r0,:64], r3
        vrhadd.u8       d1,  d1,  d17
        vld1.8          {d18},     [r0,:64], r3
        vrhadd.u8       d2,  d2,  d18
        vld1.8          {d19},     [r0,:64], r3
        vrhadd.u8       d3,  d3,  d19
        vld1.8          {d20},     [r0,:64], r3
        vrhadd.u8       d4,  d4,  d20
        vld1.8          {d21},     [r0,:64], r3
        vrhadd.u8       d5,  d5,  d21
        vld1.8          {d22},     [r0,:64], r3
        vrhadd.u8       d6,  d6,  d22
        vld1.8          {d23},     [r0,:64], r3
        vrhadd.u8       d7,  d7,  d23
        sub             r0,  r0,  r3,  lsl #3
  .endif
        vst1.8          {d0},      [r0,:64], r3
        vst1.8          {d1},      [r0,:64], r3
        vst1.8          {d2},      [r0,:64], r3
        vst1.8          {d3},      [r0,:64], r3
        vst1.8          {d4},      [r0,:64], r3
        vst1.8          {d5},      [r0,:64], r3
        vst1.8          {d6},      [r0,:64], r3
        vst1.8          {d7},      [r0,:64], r3

        mov             lr,  r10
        bx              lr
endfunc
.endm

        h264_qpel8_hv_lowpass_l2 put
        h264_qpel8_hv_lowpass_l2 avg

.macro  h264_qpel16_hv  type
function \type\()_h264_qpel16_hv_lowpass_neon
        mov             r9,  lr
        bl              \type\()_h264_qpel8_hv_lowpass_neon
        sub             r1,  r1,  r3, lsl #2
        bl              \type\()_h264_qpel8_hv_lowpass_neon
        sub             r1,  r1,  r3, lsl #4
        sub             r1,  r1,  r3, lsl #2
        add             r1,  r1,  #8
        sub             r0,  r0,  r2, lsl #4
        add             r0,  r0,  #8
        bl              \type\()_h264_qpel8_hv_lowpass_neon
        sub             r1,  r1,  r3, lsl #2
        mov             lr,  r9
        b               \type\()_h264_qpel8_hv_lowpass_neon
endfunc

function \type\()_h264_qpel16_hv_lowpass_l2_neon
        mov             r9,  lr
        sub             r2,  r4,  #256
        bl              \type\()_h264_qpel8_hv_lowpass_l2_neon
        sub             r1,  r1,  r3, lsl #2
        bl              \type\()_h264_qpel8_hv_lowpass_l2_neon
        sub             r1,  r1,  r3, lsl #4
        sub             r1,  r1,  r3, lsl #2
        add             r1,  r1,  #8
        sub             r0,  r0,  r3, lsl #4
        add             r0,  r0,  #8
        bl              \type\()_h264_qpel8_hv_lowpass_l2_neon
        sub             r1,  r1,  r3, lsl #2
        mov             lr,  r9
        b               \type\()_h264_qpel8_hv_lowpass_l2_neon
endfunc
.endm

        h264_qpel16_hv put
        h264_qpel16_hv avg

.macro  h264_qpel8      type
function ff_\type\()_h264_qpel8_mc10_neon, export=1
        lowpass_const   r3
        mov             r3,  r1
        sub             r1,  r1,  #2
        mov             r12, #8
        b               \type\()_h264_qpel8_h_lowpass_l2_neon
endfunc

function ff_\type\()_h264_qpel8_mc20_neon, export=1
        lowpass_const   r3
        sub             r1,  r1,  #2
        mov             r3,  r2
        mov             r12, #8
        b               \type\()_h264_qpel8_h_lowpass_neon
endfunc

function ff_\type\()_h264_qpel8_mc30_neon, export=1
        lowpass_const   r3
        add             r3,  r1,  #1
        sub             r1,  r1,  #2
        mov             r12, #8
        b               \type\()_h264_qpel8_h_lowpass_l2_neon
endfunc

function ff_\type\()_h264_qpel8_mc01_neon, export=1
        push            {lr}
        mov             r12, r1
\type\()_h264_qpel8_mc01:
        lowpass_const   r3
        mov             r3,  r2
        sub             r1,  r1,  r2, lsl #1
        vpush           {d8-d15}
        bl              \type\()_h264_qpel8_v_lowpass_l2_neon
        vpop            {d8-d15}
        pop             {pc}
endfunc

function ff_\type\()_h264_qpel8_mc11_neon, export=1
        push            {r0, r1, r11, lr}
\type\()_h264_qpel8_mc11:
        lowpass_const   r3
        mov             r11, sp
A       bic             sp,  sp,  #15
T       bic             r0,  r11, #15
T       mov             sp,  r0
        sub             sp,  sp,  #64
        mov             r0,  sp
        sub             r1,  r1,  #2
        mov             r3,  #8
        mov             r12, #8
        vpush           {d8-d15}
        bl              put_h264_qpel8_h_lowpass_neon
        ldrd            r0,  r1,  [r11], #8
        mov             r3,  r2
        add             r12, sp,  #64
        sub             r1,  r1,  r2, lsl #1
        mov             r2,  #8
        bl              \type\()_h264_qpel8_v_lowpass_l2_neon
        vpop            {d8-d15}
        mov             sp,  r11
        pop             {r11, pc}
endfunc

function ff_\type\()_h264_qpel8_mc21_neon, export=1
        push            {r0, r1, r4, r10, r11, lr}
\type\()_h264_qpel8_mc21:
        lowpass_const   r3
        mov             r11, sp
A       bic             sp,  sp,  #15
T       bic             r0,  r11, #15
T       mov             sp,  r0
        sub             sp,  sp,  #(8*8+16*12)
        sub             r1,  r1,  #2
        mov             r3,  #8
        mov             r0,  sp
        mov             r12, #8
        vpush           {d8-d15}
        bl              put_h264_qpel8_h_lowpass_neon
        mov             r4,  r0
        ldrd            r0,  r1,  [r11], #8
        sub             r1,  r1,  r2, lsl #1
        sub             r1,  r1,  #2
        mov             r3,  r2
        sub             r2,  r4,  #64
        bl              \type\()_h264_qpel8_hv_lowpass_l2_neon
        vpop            {d8-d15}
        mov             sp,  r11
        pop             {r4, r10, r11, pc}
endfunc

function ff_\type\()_h264_qpel8_mc31_neon, export=1
        add             r1,  r1,  #1
        push            {r0, r1, r11, lr}
        sub             r1,  r1,  #1
        b               \type\()_h264_qpel8_mc11
endfunc

function ff_\type\()_h264_qpel8_mc02_neon, export=1
        push            {lr}
        lowpass_const   r3
        sub             r1,  r1,  r2, lsl #1
        mov             r3,  r2
        vpush           {d8-d15}
        bl              \type\()_h264_qpel8_v_lowpass_neon
        vpop            {d8-d15}
        pop             {pc}
endfunc

function ff_\type\()_h264_qpel8_mc12_neon, export=1
        push            {r0, r1, r4, r10, r11, lr}
\type\()_h264_qpel8_mc12:
        lowpass_const   r3
        mov             r11, sp
A       bic             sp,  sp,  #15
T       bic             r0,  r11, #15
T       mov             sp,  r0
        sub             sp,  sp,  #(8*8+16*12)
        sub             r1,  r1,  r2, lsl #1
        mov             r3,  r2
        mov             r2,  #8
        mov             r0,  sp
        vpush           {d8-d15}
        bl              put_h264_qpel8_v_lowpass_neon
        mov             r4,  r0
        ldrd            r0,  r1,  [r11], #8
        sub             r1,  r1,  r3, lsl #1
        sub             r1,  r1,  #2
        sub             r2,  r4,  #64
        bl              \type\()_h264_qpel8_hv_lowpass_l2_neon
        vpop            {d8-d15}
        mov             sp,  r11
        pop             {r4, r10, r11, pc}
endfunc

function ff_\type\()_h264_qpel8_mc22_neon, export=1
        push            {r4, r10, r11, lr}
        mov             r11, sp
A       bic             sp,  sp,  #15
T       bic             r4,  r11, #15
T       mov             sp,  r4
        sub             r1,  r1,  r2, lsl #1
        sub             r1,  r1,  #2
        mov             r3,  r2
        sub             sp,  sp,  #(16*12)
        mov             r4,  sp
        vpush           {d8-d15}
        bl              \type\()_h264_qpel8_hv_lowpass_neon
        vpop            {d8-d15}
        mov             sp,  r11
        pop             {r4, r10, r11, pc}
endfunc

function ff_\type\()_h264_qpel8_mc32_neon, export=1
        push            {r0, r1, r4, r10, r11, lr}
        add             r1,  r1,  #1
        b               \type\()_h264_qpel8_mc12
endfunc

function ff_\type\()_h264_qpel8_mc03_neon, export=1
        push            {lr}
        add             r12, r1,  r2
        b               \type\()_h264_qpel8_mc01
endfunc

function ff_\type\()_h264_qpel8_mc13_neon, export=1
        push            {r0, r1, r11, lr}
        add             r1,  r1,  r2
        b               \type\()_h264_qpel8_mc11
endfunc

function ff_\type\()_h264_qpel8_mc23_neon, export=1
        push            {r0, r1, r4, r10, r11, lr}
        add             r1,  r1,  r2
        b               \type\()_h264_qpel8_mc21
endfunc

function ff_\type\()_h264_qpel8_mc33_neon, export=1
        add             r1,  r1,  #1
        push            {r0, r1, r11, lr}
        add             r1,  r1,  r2
        sub             r1,  r1,  #1
        b               \type\()_h264_qpel8_mc11
endfunc
.endm

        h264_qpel8 put
        h264_qpel8 avg

.macro  h264_qpel16     type
function ff_\type\()_h264_qpel16_mc10_neon, export=1
        lowpass_const   r3
        mov             r3,  r1
        sub             r1,  r1,  #2
        b               \type\()_h264_qpel16_h_lowpass_l2_neon
endfunc

function ff_\type\()_h264_qpel16_mc20_neon, export=1
        lowpass_const   r3
        sub             r1,  r1,  #2
        mov             r3,  r2
        b               \type\()_h264_qpel16_h_lowpass_neon
endfunc

function ff_\type\()_h264_qpel16_mc30_neon, export=1
        lowpass_const   r3
        add             r3,  r1,  #1
        sub             r1,  r1,  #2
        b               \type\()_h264_qpel16_h_lowpass_l2_neon
endfunc

function ff_\type\()_h264_qpel16_mc01_neon, export=1
        push            {r4, lr}
        mov             r12, r1
\type\()_h264_qpel16_mc01:
        lowpass_const   r3
        mov             r3,  r2
        sub             r1,  r1,  r2, lsl #1
        vpush           {d8-d15}
        bl              \type\()_h264_qpel16_v_lowpass_l2_neon
        vpop            {d8-d15}
        pop             {r4, pc}
endfunc

function ff_\type\()_h264_qpel16_mc11_neon, export=1
        push            {r0, r1, r4, r11, lr}
\type\()_h264_qpel16_mc11:
        lowpass_const   r3
        mov             r11, sp
A       bic             sp,  sp,  #15
T       bic             r0,  r11, #15
T       mov             sp,  r0
        sub             sp,  sp,  #256
        mov             r0,  sp
        sub             r1,  r1,  #2
        mov             r3,  #16
        vpush           {d8-d15}
        bl              put_h264_qpel16_h_lowpass_neon
        ldrd            r0,  r1,  [r11], #8
        mov             r3,  r2
        add             r12, sp,  #64
        sub             r1,  r1,  r2, lsl #1
        mov             r2,  #16
        bl              \type\()_h264_qpel16_v_lowpass_l2_neon
        vpop            {d8-d15}
        mov             sp,  r11
        pop             {r4, r11, pc}
endfunc

function ff_\type\()_h264_qpel16_mc21_neon, export=1
        push            {r0, r1, r4-r5, r9-r11, lr}
\type\()_h264_qpel16_mc21:
        lowpass_const   r3
        mov             r11, sp
A       bic             sp,  sp,  #15
T       bic             r0,  r11, #15
T       mov             sp,  r0
        sub             sp,  sp,  #(16*16+16*12)
        sub             r1,  r1,  #2
        mov             r0,  sp
        vpush           {d8-d15}
        bl              put_h264_qpel16_h_lowpass_neon_packed
        mov             r4,  r0
        ldrd            r0,  r1,  [r11], #8
        sub             r1,  r1,  r2, lsl #1
        sub             r1,  r1,  #2
        mov             r3,  r2
        bl              \type\()_h264_qpel16_hv_lowpass_l2_neon
        vpop            {d8-d15}
        mov             sp,  r11
        pop             {r4-r5, r9-r11, pc}
endfunc

function ff_\type\()_h264_qpel16_mc31_neon, export=1
        add             r1,  r1,  #1
        push            {r0, r1, r4, r11, lr}
        sub             r1,  r1,  #1
        b               \type\()_h264_qpel16_mc11
endfunc

function ff_\type\()_h264_qpel16_mc02_neon, export=1
        push            {r4, lr}
        lowpass_const   r3
        sub             r1,  r1,  r2, lsl #1
        mov             r3,  r2
        vpush           {d8-d15}
        bl              \type\()_h264_qpel16_v_lowpass_neon
        vpop            {d8-d15}
        pop             {r4, pc}
endfunc

function ff_\type\()_h264_qpel16_mc12_neon, export=1
        push            {r0, r1, r4-r5, r9-r11, lr}
\type\()_h264_qpel16_mc12:
        lowpass_const   r3
        mov             r11, sp
A       bic             sp,  sp,  #15
T       bic             r0,  r11, #15
T       mov             sp,  r0
        sub             sp,  sp,  #(16*16+16*12)
        sub             r1,  r1,  r2, lsl #1
        mov             r0,  sp
        mov             r3,  r2
        vpush           {d8-d15}
        bl              put_h264_qpel16_v_lowpass_neon_packed
        mov             r4,  r0
        ldrd            r0,  r1,  [r11], #8
        sub             r1,  r1,  r3, lsl #1
        sub             r1,  r1,  #2
        mov             r2,  r3
        bl              \type\()_h264_qpel16_hv_lowpass_l2_neon
        vpop            {d8-d15}
        mov             sp,  r11
        pop             {r4-r5, r9-r11, pc}
endfunc

function ff_\type\()_h264_qpel16_mc22_neon, export=1
        push            {r4, r9-r11, lr}
        lowpass_const   r3
        mov             r11, sp
A       bic             sp,  sp,  #15
T       bic             r4,  r11, #15
T       mov             sp,  r4
        sub             r1,  r1,  r2, lsl #1
        sub             r1,  r1,  #2
        mov             r3,  r2
        sub             sp,  sp,  #(16*12)
        mov             r4,  sp
        vpush           {d8-d15}
        bl              \type\()_h264_qpel16_hv_lowpass_neon
        vpop            {d8-d15}
        mov             sp,  r11
        pop             {r4, r9-r11, pc}
endfunc

function ff_\type\()_h264_qpel16_mc32_neon, export=1
        push            {r0, r1, r4-r5, r9-r11, lr}
        add             r1,  r1,  #1
        b               \type\()_h264_qpel16_mc12
endfunc

function ff_\type\()_h264_qpel16_mc03_neon, export=1
        push            {r4, lr}
        add             r12, r1,  r2
        b               \type\()_h264_qpel16_mc01
endfunc

function ff_\type\()_h264_qpel16_mc13_neon, export=1
        push            {r0, r1, r4, r11, lr}
        add             r1,  r1,  r2
        b               \type\()_h264_qpel16_mc11
endfunc

function ff_\type\()_h264_qpel16_mc23_neon, export=1
        push            {r0, r1, r4-r5, r9-r11, lr}
        add             r1,  r1,  r2
        b               \type\()_h264_qpel16_mc21
endfunc

function ff_\type\()_h264_qpel16_mc33_neon, export=1
        add             r1,  r1,  #1
        push            {r0, r1, r4, r11, lr}
        add             r1,  r1,  r2
        sub             r1,  r1,  #1
        b               \type\()_h264_qpel16_mc11
endfunc
.endm

        h264_qpel16 put
        h264_qpel16 avg

@ Biweighted prediction

.macro  biweight_16     macs, macd
        vdup.8          d0,  r4
        vdup.8          d1,  r5
        vmov            q2,  q8
        vmov            q3,  q8
1:      subs            r3,  r3,  #2
        vld1.8          {d20-d21},[r0,:128], r2
        \macd           q2,  d0,  d20
        pld             [r0]
        \macd           q3,  d0,  d21
        vld1.8          {d22-d23},[r1,:128], r2
        \macs           q2,  d1,  d22
        pld             [r1]
        \macs           q3,  d1,  d23
        vmov            q12, q8
        vld1.8          {d28-d29},[r0,:128], r2
        vmov            q13, q8
        \macd           q12, d0,  d28
        pld             [r0]
        \macd           q13, d0,  d29
        vld1.8          {d30-d31},[r1,:128], r2
        \macs           q12, d1,  d30
        pld             [r1]
        \macs           q13, d1,  d31
        vshl.s16        q2,  q2,  q9
        vshl.s16        q3,  q3,  q9
        vqmovun.s16     d4,  q2
        vqmovun.s16     d5,  q3
        vshl.s16        q12, q12, q9
        vshl.s16        q13, q13, q9
        vqmovun.s16     d24, q12
        vqmovun.s16     d25, q13
        vmov            q3,  q8
        vst1.8          {d4- d5}, [r6,:128], r2
        vmov            q2,  q8
        vst1.8          {d24-d25},[r6,:128], r2
        bne             1b
        pop             {r4-r6, pc}
.endm

.macro  biweight_8      macs, macd
        vdup.8          d0,  r4
        vdup.8          d1,  r5
        vmov            q1,  q8
        vmov            q10, q8
1:      subs            r3,  r3,  #2
        vld1.8          {d4},[r0,:64], r2
        \macd           q1,  d0,  d4
        pld             [r0]
        vld1.8          {d5},[r1,:64], r2
        \macs           q1,  d1,  d5
        pld             [r1]
        vld1.8          {d6},[r0,:64], r2
        \macd           q10, d0,  d6
        pld             [r0]
        vld1.8          {d7},[r1,:64], r2
        \macs           q10, d1,  d7
        pld             [r1]
        vshl.s16        q1,  q1,  q9
        vqmovun.s16     d2,  q1
        vshl.s16        q10, q10, q9
        vqmovun.s16     d4,  q10
        vmov            q10, q8
        vst1.8          {d2},[r6,:64], r2
        vmov            q1,  q8
        vst1.8          {d4},[r6,:64], r2
        bne             1b
        pop             {r4-r6, pc}
.endm

.macro  biweight_4      macs, macd
        vdup.8          d0,  r4
        vdup.8          d1,  r5
        vmov            q1,  q8
        vmov            q10, q8
1:      subs            r3,  r3,  #4
        vld1.32         {d4[0]},[r0,:32], r2
        vld1.32         {d4[1]},[r0,:32], r2
        \macd           q1,  d0,  d4
        pld             [r0]
        vld1.32         {d5[0]},[r1,:32], r2
        vld1.32         {d5[1]},[r1,:32], r2
        \macs           q1,  d1,  d5
        pld             [r1]
        blt             2f
        vld1.32         {d6[0]},[r0,:32], r2
        vld1.32         {d6[1]},[r0,:32], r2
        \macd           q10, d0,  d6
        pld             [r0]
        vld1.32         {d7[0]},[r1,:32], r2
        vld1.32         {d7[1]},[r1,:32], r2
        \macs           q10, d1,  d7
        pld             [r1]
        vshl.s16        q1,  q1,  q9
        vqmovun.s16     d2,  q1
        vshl.s16        q10, q10, q9
        vqmovun.s16     d4,  q10
        vmov            q10, q8
        vst1.32         {d2[0]},[r6,:32], r2
        vst1.32         {d2[1]},[r6,:32], r2
        vmov            q1,  q8
        vst1.32         {d4[0]},[r6,:32], r2
        vst1.32         {d4[1]},[r6,:32], r2
        bne             1b
        pop             {r4-r6, pc}
2:      vshl.s16        q1,  q1,  q9
        vqmovun.s16     d2,  q1
        vst1.32         {d2[0]},[r6,:32], r2
        vst1.32         {d2[1]},[r6,:32], r2
        pop             {r4-r6, pc}
.endm

.macro  biweight_func   w
function ff_biweight_h264_pixels_\w\()_neon, export=1
        push            {r4-r6, lr}
        ldr             r12, [sp, #16]
        add             r4,  sp,  #20
        ldm             r4,  {r4-r6}
        lsr             lr,  r4,  #31
        add             r6,  r6,  #1
        eors            lr,  lr,  r5,  lsr #30
        orr             r6,  r6,  #1
        vdup.16         q9,  r12
        lsl             r6,  r6,  r12
        vmvn            q9,  q9
        vdup.16         q8,  r6
        mov             r6,  r0
        beq             10f
        subs            lr,  lr,  #1
        beq             20f
        subs            lr,  lr,  #1
        beq             30f
        b               40f
10:     biweight_\w     vmlal.u8, vmlal.u8
20:     rsb             r4,  r4,  #0
        biweight_\w     vmlal.u8, vmlsl.u8
30:     rsb             r4,  r4,  #0
        rsb             r5,  r5,  #0
        biweight_\w     vmlsl.u8, vmlsl.u8
40:     rsb             r5,  r5,  #0
        biweight_\w     vmlsl.u8, vmlal.u8
endfunc
.endm

        biweight_func   16
        biweight_func   8
        biweight_func   4

@ Weighted prediction

.macro  weight_16       add
        vdup.8          d0,  r12
1:      subs            r2,  r2,  #2
        vld1.8          {d20-d21},[r0,:128], r1
        vmull.u8        q2,  d0,  d20
        pld             [r0]
        vmull.u8        q3,  d0,  d21
        vld1.8          {d28-d29},[r0,:128], r1
        vmull.u8        q12, d0,  d28
        pld             [r0]
        vmull.u8        q13, d0,  d29
        \add            q2,  q8,  q2
        vrshl.s16       q2,  q2,  q9
        \add            q3,  q8,  q3
        vrshl.s16       q3,  q3,  q9
        vqmovun.s16     d4,  q2
        vqmovun.s16     d5,  q3
        \add            q12, q8,  q12
        vrshl.s16       q12, q12, q9
        \add            q13, q8,  q13
        vrshl.s16       q13, q13, q9
        vqmovun.s16     d24, q12
        vqmovun.s16     d25, q13
        vst1.8          {d4- d5}, [r4,:128], r1
        vst1.8          {d24-d25},[r4,:128], r1
        bne             1b
        pop             {r4, pc}
.endm

.macro  weight_8        add
        vdup.8          d0,  r12
1:      subs            r2,  r2,  #2
        vld1.8          {d4},[r0,:64], r1
        vmull.u8        q1,  d0,  d4
        pld             [r0]
        vld1.8          {d6},[r0,:64], r1
        vmull.u8        q10, d0,  d6
        \add            q1,  q8,  q1
        pld             [r0]
        vrshl.s16       q1,  q1,  q9
        vqmovun.s16     d2,  q1
        \add            q10, q8,  q10
        vrshl.s16       q10, q10, q9
        vqmovun.s16     d4,  q10
        vst1.8          {d2},[r4,:64], r1
        vst1.8          {d4},[r4,:64], r1
        bne             1b
        pop             {r4, pc}
.endm

.macro  weight_4        add
        vdup.8          d0,  r12
        vmov            q1,  q8
        vmov            q10, q8
1:      subs            r2,  r2,  #4
        vld1.32         {d4[0]},[r0,:32], r1
        vld1.32         {d4[1]},[r0,:32], r1
        vmull.u8        q1,  d0,  d4
        pld             [r0]
        blt             2f
        vld1.32         {d6[0]},[r0,:32], r1
        vld1.32         {d6[1]},[r0,:32], r1
        vmull.u8        q10, d0,  d6
        pld             [r0]
        \add            q1,  q8,  q1
        vrshl.s16       q1,  q1,  q9
        vqmovun.s16     d2,  q1
        \add            q10, q8,  q10
        vrshl.s16       q10, q10, q9
        vqmovun.s16     d4,  q10
        vmov            q10, q8
        vst1.32         {d2[0]},[r4,:32], r1
        vst1.32         {d2[1]},[r4,:32], r1
        vmov            q1,  q8
        vst1.32         {d4[0]},[r4,:32], r1
        vst1.32         {d4[1]},[r4,:32], r1
        bne             1b
        pop             {r4, pc}
2:      \add            q1,  q8,  q1
        vrshl.s16       q1,  q1,  q9
        vqmovun.s16     d2,  q1
        vst1.32         {d2[0]},[r4,:32], r1
        vst1.32         {d2[1]},[r4,:32], r1
        pop             {r4, pc}
.endm

.macro  weight_func     w
function ff_weight_h264_pixels_\w\()_neon, export=1
        push            {r4, lr}
        ldr             r12, [sp, #8]
        ldr             r4,  [sp, #12]
        cmp             r3,  #1
        lsl             r4,  r4,  r3
        vdup.16         q8,  r4
        mov             r4,  r0
        ble             20f
        rsb             lr,  r3,  #1
        vdup.16         q9,  lr
        cmp             r12, #0
        blt             10f
        weight_\w       vhadd.s16
10:     rsb             r12, r12, #0
        weight_\w       vhsub.s16
20:     rsb             lr,  r3,  #0
        vdup.16         q9,  lr
        cmp             r12, #0
        blt             10f
        weight_\w       vadd.s16
10:     rsb             r12, r12, #0
        weight_\w       vsub.s16
endfunc
.endm

        weight_func     16
        weight_func     8
        weight_func     4
