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FFmpeg/libavcodec/arm/rv34dsp_neon.S

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/*
* Copyright (c) 2011 Janne Grunau <janne-libav@jannau.net>
*
* 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 "asm.S"
.macro rv34_inv_transform
mov r1, #16
vld1.16 {d28}, [r0,:64], r1 @ block[i+8*0]
vld1.16 {d29}, [r0,:64], r1 @ block[i+8*1]
vld1.16 {d30}, [r0,:64], r1 @ block[i+8*2]
vld1.16 {d31}, [r0,:64], r1 @ block[i+8*3]
vmov.s16 d0, #13
vshll.s16 q12, d29, #3
vshll.s16 q13, d29, #4
vshll.s16 q9, d31, #3
vshll.s16 q1, d31, #4
vmull.s16 q10, d28, d0
vmlal.s16 q10, d30, d0
vmull.s16 q11, d28, d0
vmlsl.s16 q11, d30, d0
vsubw.s16 q12, q12, d29 @ z2 = block[i+8*1]*7
vaddw.s16 q13, q13, d29 @ z3 = block[i+8*1]*17
vsubw.s16 q9, q9, d31
vaddw.s16 q1, q1, d31
vadd.s32 q13, q13, q9 @ z3 = 17*block[i+8*1] + 7*block[i+8*3]
vsub.s32 q12, q12, q1 @ z2 = 7*block[i+8*1] - 17*block[i+8*3]
vadd.s32 q1, q10, q13 @ z0 + z3
vadd.s32 q2, q11, q12 @ z1 + z2
vsub.s32 q8, q10, q13 @ z0 - z3
vsub.s32 q3, q11, q12 @ z1 - z2
vtrn.32 q1, q2
vtrn.32 q3, q8
vswp d3, d6
vswp d5, d16
vmov.s32 d0, #13
vadd.s32 q10, q1, q3
vsub.s32 q11, q1, q3
vshl.s32 q12, q2, #3
vshl.s32 q9, q2, #4
vmul.s32 q13, q11, d0[0]
vshl.s32 q11, q8, #4
vadd.s32 q9, q9, q2
vshl.s32 q15, q8, #3
vsub.s32 q12, q12, q2
vadd.s32 q11, q11, q8
vmul.s32 q14, q10, d0[0]
vsub.s32 q8, q15, q8
vsub.s32 q12, q12, q11
vadd.s32 q9, q9, q8
vadd.s32 q2, q13, q12 @ z1 + z2
vadd.s32 q1, q14, q9 @ z0 + z3
vsub.s32 q3, q13, q12 @ z1 - z2
vsub.s32 q15, q14, q9 @ z0 - z3
.endm
/* void ff_rv34_inv_transform_neon(DCTELEM *block); */
function ff_rv34_inv_transform_neon, export=1
mov r2, r0
rv34_inv_transform
vrshrn.s32 d1, q2, #10 @ (z1 + z2) >> 10
vrshrn.s32 d0, q1, #10 @ (z0 + z3) >> 10
vrshrn.s32 d2, q3, #10 @ (z1 - z2) >> 10
vrshrn.s32 d3, q15, #10 @ (z0 - z3) >> 10
vst4.16 {d0[0], d1[0], d2[0], d3[0]}, [r2,:64], r1
vst4.16 {d0[1], d1[1], d2[1], d3[1]}, [r2,:64], r1
vst4.16 {d0[2], d1[2], d2[2], d3[2]}, [r2,:64], r1
vst4.16 {d0[3], d1[3], d2[3], d3[3]}, [r2,:64], r1
bx lr
endfunc
/* void rv34_inv_transform_noround_neon(DCTELEM *block); */
function ff_rv34_inv_transform_noround_neon, export=1
mov r2, r0
rv34_inv_transform
vshl.s32 q11, q2, #1
vshl.s32 q10, q1, #1
vshl.s32 q12, q3, #1
vshl.s32 q13, q15, #1
vadd.s32 q11, q11, q2
vadd.s32 q10, q10, q1
vadd.s32 q12, q12, q3
vadd.s32 q13, q13, q15
vshrn.s32 d0, q10, #11 @ (z0 + z3)*3 >> 11
vshrn.s32 d1, q11, #11 @ (z1 + z2)*3 >> 11
vshrn.s32 d2, q12, #11 @ (z1 - z2)*3 >> 11
vshrn.s32 d3, q13, #11 @ (z0 - z3)*3 >> 11
vst4.16 {d0[0], d1[0], d2[0], d3[0]}, [r2,:64], r1
vst4.16 {d0[1], d1[1], d2[1], d3[1]}, [r2,:64], r1
vst4.16 {d0[2], d1[2], d2[2], d3[2]}, [r2,:64], r1
vst4.16 {d0[3], d1[3], d2[3], d3[3]}, [r2,:64], r1
bx lr
endfunc
function ff_rv34_dequant4x4_neon, export=1
mov r3, r0
mov r12, #16
vdup.16 q0, r2
vmov.16 d0[0], r1
vld1.16 {d2}, [r0,:64], r12
vld1.16 {d4}, [r0,:64], r12
vld1.16 {d6}, [r0,:64], r12
vld1.16 {d16}, [r0,:64], r12
vmull.s16 q1, d2, d0
vmull.s16 q2, d4, d1
vmull.s16 q3, d6, d1
vmull.s16 q8, d16, d1
vqrshrn.s32 d2, q1, #4
vqrshrn.s32 d4, q2, #4
vqrshrn.s32 d6, q3, #4
vqrshrn.s32 d16, q8, #4
vst1.16 {d2}, [r3,:64], r12
vst1.16 {d4}, [r3,:64], r12
vst1.16 {d6}, [r3,:64], r12
vst1.16 {d16}, [r3,:64], r12
bx lr
endfunc