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- /*
- * Copyright (c) 2016 Matthieu Bouron <matthieu.bouron stupeflix.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/arm/asm.S"
-
- function ff_resample_common_apply_filter_x4_float_neon, export=1
- vmov.f32 q0, #0.0 @ accumulator
- 1: vld1.32 {q1}, [r1]! @ src[0..3]
- vld1.32 {q2}, [r2]! @ filter[0..3]
- vmla.f32 q0, q1, q2 @ accumulator += src[0..3] * filter[0..3]
- subs r3, #4 @ filter_length -= 4
- bgt 1b @ loop until filter_length
- vpadd.f32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values
- vpadd.f32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values
- vst1.32 {d0[0]}, [r0] @ write accumulator
- mov pc, lr
- endfunc
-
- function ff_resample_common_apply_filter_x8_float_neon, export=1
- vmov.f32 q0, #0.0 @ accumulator
- 1: vld1.32 {q1}, [r1]! @ src[0..3]
- vld1.32 {q2}, [r2]! @ filter[0..3]
- vld1.32 {q8}, [r1]! @ src[4..7]
- vld1.32 {q9}, [r2]! @ filter[4..7]
- vmla.f32 q0, q1, q2 @ accumulator += src[0..3] * filter[0..3]
- vmla.f32 q0, q8, q9 @ accumulator += src[4..7] * filter[4..7]
- subs r3, #8 @ filter_length -= 8
- bgt 1b @ loop until filter_length
- vpadd.f32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values
- vpadd.f32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values
- vst1.32 {d0[0]}, [r0] @ write accumulator
- mov pc, lr
- endfunc
-
- function ff_resample_common_apply_filter_x4_s16_neon, export=1
- vmov.s32 q0, #0 @ accumulator
- 1: vld1.16 {d2}, [r1]! @ src[0..3]
- vld1.16 {d4}, [r2]! @ filter[0..3]
- vmlal.s16 q0, d2, d4 @ accumulator += src[0..3] * filter[0..3]
- subs r3, #4 @ filter_length -= 4
- bgt 1b @ loop until filter_length
- vpadd.s32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values
- vpadd.s32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values
- vst1.32 {d0[0]}, [r0] @ write accumulator
- mov pc, lr
- endfunc
-
- function ff_resample_common_apply_filter_x8_s16_neon, export=1
- vmov.s32 q0, #0 @ accumulator
- 1: vld1.16 {q1}, [r1]! @ src[0..7]
- vld1.16 {q2}, [r2]! @ filter[0..7]
- vmlal.s16 q0, d2, d4 @ accumulator += src[0..3] * filter[0..3]
- vmlal.s16 q0, d3, d5 @ accumulator += src[4..7] * filter[4..7]
- subs r3, #8 @ filter_length -= 8
- bgt 1b @ loop until filter_length
- vpadd.s32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values
- vpadd.s32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values
- vst1.32 {d0[0]}, [r0] @ write accumulator
- mov pc, lr
- endfunc
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