| /* |
| * 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 |