aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* ARM NEON optimised DSP functions for G722 coding
* Copyright (c) 2015 Peter Meerwald <pmeerw@pmeerw.net>
*
* 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
*/
#include "libavutil/arm/asm.S"
function ff_g722_apply_qmf_neon, export=1, align=4
movrel r3, qmf_coeffs
vld1.s16 {d2,d3,d4}, [r0]! /* load prev_samples */
vld1.s16 {d16,d17,d18}, [r3,:64]! /* load qmf_coeffs */
vmull.s16 q0, d2, d16
vmlal.s16 q0, d3, d17
vmlal.s16 q0, d4, d18
vld1.s16 {d5,d6,d7}, [r0]! /* load prev_samples */
vld1.s16 {d19,d20,d21}, [r3,:64]! /* load qmf_coeffs */
vmlal.s16 q0, d5, d19
vmlal.s16 q0, d6, d20
vmlal.s16 q0, d7, d21
vadd.s32 d0, d1, d0
vrev64.32 d0, d0
vst1.s32 {d0}, [r1]
bx lr
endfunc
const qmf_coeffs, align=4
.hword 3
.hword -11
.hword -11
.hword 53
.hword 12
.hword -156
.hword 32
.hword 362
.hword -210
.hword -805
.hword 951
.hword 3876
.hword 3876
.hword 951
.hword -805
.hword -210
.hword 362
.hword 32
.hword -156
.hword 12
.hword 53
.hword -11
.hword -11
.hword 3
endconst
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