| /* | |
| * 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, =1, =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, =4 | |
| 3 | |
| -11 | |
| -11 | |
| 53 | |
| 12 | |
| -156 | |
| 32 | |
| 362 | |
| -210 | |
| -805 | |
| 951 | |
| 3876 | |
| 3876 | |
| 951 | |
| -805 | |
| -210 | |
| 362 | |
| 32 | |
| -156 | |
| 12 | |
| 53 | |
| -11 | |
| -11 | |
| 3 | |
| endconst | |