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Diffstat (limited to 'libswresample/aarch64/resample.S')
| -rw-r--r-- | libswresample/aarch64/resample.S | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/libswresample/aarch64/resample.S b/libswresample/aarch64/resample.S new file mode 100644 index 0000000000..b3b1bb9fe1 --- /dev/null +++ b/libswresample/aarch64/resample.S @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2017 Matthieu Bouron <matthieu.bouron gmail.com> + * + * 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/aarch64/asm.S" + +function ff_resample_common_apply_filter_x4_float_neon, export=1 + movi v0.4S, #0 // accumulator +1: ld1 {v1.4S}, [x1], #16 // src[0..3] + ld1 {v2.4S}, [x2], #16 // filter[0..3] + fmla v0.4S, v1.4S, v2.4S // accumulator += src[0..3] * filter[0..3] + subs w3, w3, #4 // filter_length -= 4 + b.gt 1b // loop until filter_length + faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values + faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values + st1 {v0.S}[0], [x0], #4 // write accumulator + ret +endfunc + +function ff_resample_common_apply_filter_x8_float_neon, export=1 + movi v0.4S, #0 // accumulator +1: ld1 {v1.4S}, [x1], #16 // src[0..3] + ld1 {v2.4S}, [x2], #16 // filter[0..3] + ld1 {v3.4S}, [x1], #16 // src[4..7] + ld1 {v4.4S}, [x2], #16 // filter[4..7] + fmla v0.4S, v1.4S, v2.4S // accumulator += src[0..3] * filter[0..3] + fmla v0.4S, v3.4S, v4.4S // accumulator += src[4..7] * filter[4..7] + subs w3, w3, #8 // filter_length -= 8 + b.gt 1b // loop until filter_length + faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values + faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values + st1 {v0.S}[0], [x0], #4 // write accumulator +endfunc + +function ff_resample_common_apply_filter_x4_s16_neon, export=1 + movi v0.4S, #0 // accumulator +1: ld1 {v1.4H}, [x1], #8 // src[0..3] + ld1 {v2.4H}, [x2], #8 // filter[0..3] + smlal v0.4S, v1.4H, v2.4H // accumulator += src[0..3] * filter[0..3] + subs w3, w3, #4 // filter_length -= 4 + b.gt 1b // loop until filter_length + addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values + addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values + st1 {v0.S}[0], [x0], #4 // write accumulator + ret +endfunc + +function ff_resample_common_apply_filter_x8_s16_neon, export=1 + movi v0.4S, #0 // accumulator +1: ld1 {v1.8H}, [x1], #16 // src[0..7] + ld1 {v2.8H}, [x2], #16 // filter[0..7] + smlal v0.4S, v1.4H, v2.4H // accumulator += src[0..3] * filter[0..3] + smlal2 v0.4S, v1.8H, v2.8H // accumulator += src[4..7] * filter[4..7] + subs w3, w3, #8 // filter_length -= 8 + b.gt 1b // loop until filter_length + addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values + addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values + st1 {v0.S}[0], [x0], #4 // write accumulator + ret +endfunc |