diff options
Diffstat (limited to 'libswresample/arm/resample.S')
| -rw-r--r-- | libswresample/arm/resample.S | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/libswresample/arm/resample.S b/libswresample/arm/resample.S new file mode 100644 index 0000000000..c231301b2b --- /dev/null +++ b/libswresample/arm/resample.S @@ -0,0 +1,77 @@ +/* + * 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 + vld1.32 {q2}, [r2]! @ filter + 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 + vld1.32 {q2}, [r2]! @ filter + vld1.32 {q8}, [r1]! @ src + vld1.32 {q9}, [r2]! @ filter + 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 + vld1.16 {d4}, [r2]! @ filter + 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 + vld1.16 {q2}, [r2]! @ filter + 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 |