forked from KolibriOS/kolibrios
70 lines
2.3 KiB
ArmAsm
70 lines
2.3 KiB
ArmAsm
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/*
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* ARM NEON optimised DSP functions for G722 coding
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* Copyright (c) 2015 Peter Meerwald <pmeerw@pmeerw.net>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/arm/asm.S"
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function ff_g722_apply_qmf_neon, export=1, align=4
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movrel r3, qmf_coeffs
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vld1.s16 {d2,d3,d4}, [r0]! /* load prev_samples */
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vld1.s16 {d16,d17,d18}, [r3,:64]! /* load qmf_coeffs */
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vmull.s16 q0, d2, d16
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vmlal.s16 q0, d3, d17
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vmlal.s16 q0, d4, d18
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vld1.s16 {d5,d6,d7}, [r0]! /* load prev_samples */
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vld1.s16 {d19,d20,d21}, [r3,:64]! /* load qmf_coeffs */
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vmlal.s16 q0, d5, d19
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vmlal.s16 q0, d6, d20
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vmlal.s16 q0, d7, d21
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vadd.s32 d0, d1, d0
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vrev64.32 d0, d0
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vst1.s32 {d0}, [r1]
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bx lr
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endfunc
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const qmf_coeffs, align=4
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.hword 3
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.hword -11
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.hword -11
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.hword 53
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.hword 12
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.hword -156
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.hword 32
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.hword 362
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.hword -210
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.hword -805
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.hword 951
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.hword 3876
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.hword 3876
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.hword 951
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.hword -805
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.hword -210
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.hword 362
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.hword 32
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.hword -156
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.hword 12
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.hword 53
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.hword -11
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.hword -11
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.hword 3
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endconst
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