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260 lines
9.9 KiB
260 lines
9.9 KiB
11 years ago
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/*
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* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
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* Copyright (c) 2013 Janne Grunau <janne-libav@jannau.net>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/aarch64/asm.S"
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#include "neon.S"
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.macro h264_loop_filter_start
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cmp w2, #0
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ldr w6, [x4]
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ccmp w3, #0, #0, ne
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mov v24.S[0], w6
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and w6, w6, w6, lsl #16
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b.eq 1f
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ands w6, w6, w6, lsl #8
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b.ge 2f
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1:
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ret
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2:
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.endm
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.macro h264_loop_filter_luma
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dup v22.16B, w2 // alpha
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uxtl v24.8H, v24.8B
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uabd v21.16B, v16.16B, v0.16B // abs(p0 - q0)
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uxtl v24.4S, v24.4H
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uabd v28.16B, v18.16B, v16.16B // abs(p1 - p0)
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sli v24.8H, v24.8H, #8
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uabd v30.16B, v2.16B, v0.16B // abs(q1 - q0)
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sli v24.4S, v24.4S, #16
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cmhi v21.16B, v22.16B, v21.16B // < alpha
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dup v22.16B, w3 // beta
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cmlt v23.16B, v24.16B, #0
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cmhi v28.16B, v22.16B, v28.16B // < beta
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cmhi v30.16B, v22.16B, v30.16B // < beta
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bic v21.16B, v21.16B, v23.16B
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uabd v17.16B, v20.16B, v16.16B // abs(p2 - p0)
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and v21.16B, v21.16B, v28.16B
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uabd v19.16B, v4.16B, v0.16B // abs(q2 - q0)
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cmhi v17.16B, v22.16B, v17.16B // < beta
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and v21.16B, v21.16B, v30.16B
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cmhi v19.16B, v22.16B, v19.16B // < beta
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and v17.16B, v17.16B, v21.16B
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and v19.16B, v19.16B, v21.16B
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and v24.16B, v24.16B, v21.16B
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urhadd v28.16B, v16.16B, v0.16B
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sub v21.16B, v24.16B, v17.16B
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uqadd v23.16B, v18.16B, v24.16B
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uhadd v20.16B, v20.16B, v28.16B
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sub v21.16B, v21.16B, v19.16B
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uhadd v28.16B, v4.16B, v28.16B
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umin v23.16B, v23.16B, v20.16B
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uqsub v22.16B, v18.16B, v24.16B
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uqadd v4.16B, v2.16B, v24.16B
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umax v23.16B, v23.16B, v22.16B
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uqsub v22.16B, v2.16B, v24.16B
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umin v28.16B, v4.16B, v28.16B
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uxtl v4.8H, v0.8B
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umax v28.16B, v28.16B, v22.16B
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uxtl2 v20.8H, v0.16B
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usubw v4.8H, v4.8H, v16.8B
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usubw2 v20.8H, v20.8H, v16.16B
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shl v4.8H, v4.8H, #2
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shl v20.8H, v20.8H, #2
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uaddw v4.8H, v4.8H, v18.8B
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uaddw2 v20.8H, v20.8H, v18.16B
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usubw v4.8H, v4.8H, v2.8B
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usubw2 v20.8H, v20.8H, v2.16B
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rshrn v4.8B, v4.8H, #3
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rshrn2 v4.16B, v20.8H, #3
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bsl v17.16B, v23.16B, v18.16B
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bsl v19.16B, v28.16B, v2.16B
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neg v23.16B, v21.16B
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uxtl v28.8H, v16.8B
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smin v4.16B, v4.16B, v21.16B
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uxtl2 v21.8H, v16.16B
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smax v4.16B, v4.16B, v23.16B
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uxtl v22.8H, v0.8B
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uxtl2 v24.8H, v0.16B
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saddw v28.8H, v28.8H, v4.8B
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saddw2 v21.8H, v21.8H, v4.16B
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ssubw v22.8H, v22.8H, v4.8B
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ssubw2 v24.8H, v24.8H, v4.16B
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sqxtun v16.8B, v28.8H
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sqxtun2 v16.16B, v21.8H
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sqxtun v0.8B, v22.8H
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sqxtun2 v0.16B, v24.8H
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.endm
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function ff_h264_v_loop_filter_luma_neon, export=1
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h264_loop_filter_start
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sxtw x1, w1
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ld1 {v0.16B}, [x0], x1
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ld1 {v2.16B}, [x0], x1
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ld1 {v4.16B}, [x0], x1
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sub x0, x0, x1, lsl #2
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sub x0, x0, x1, lsl #1
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ld1 {v20.16B}, [x0], x1
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ld1 {v18.16B}, [x0], x1
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ld1 {v16.16B}, [x0], x1
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h264_loop_filter_luma
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sub x0, x0, x1, lsl #1
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st1 {v17.16B}, [x0], x1
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st1 {v16.16B}, [x0], x1
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st1 {v0.16B}, [x0], x1
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st1 {v19.16B}, [x0]
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ret
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endfunc
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function ff_h264_h_loop_filter_luma_neon, export=1
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h264_loop_filter_start
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sub x0, x0, #4
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ld1 {v6.8B}, [x0], x1
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ld1 {v20.8B}, [x0], x1
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ld1 {v18.8B}, [x0], x1
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ld1 {v16.8B}, [x0], x1
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ld1 {v0.8B}, [x0], x1
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ld1 {v2.8B}, [x0], x1
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ld1 {v4.8B}, [x0], x1
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ld1 {v26.8B}, [x0], x1
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ld1 {v6.D}[1], [x0], x1
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ld1 {v20.D}[1], [x0], x1
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ld1 {v18.D}[1], [x0], x1
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ld1 {v16.D}[1], [x0], x1
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ld1 {v0.D}[1], [x0], x1
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ld1 {v2.D}[1], [x0], x1
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ld1 {v4.D}[1], [x0], x1
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ld1 {v26.D}[1], [x0], x1
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transpose_8x16B v6, v20, v18, v16, v0, v2, v4, v26, v21, v23
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h264_loop_filter_luma
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transpose_4x16B v17, v16, v0, v19, v21, v23, v25, v27
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sub x0, x0, x1, lsl #4
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add x0, x0, #2
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st1 {v17.S}[0], [x0], x1
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st1 {v16.S}[0], [x0], x1
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st1 {v0.S}[0], [x0], x1
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st1 {v19.S}[0], [x0], x1
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st1 {v17.S}[1], [x0], x1
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st1 {v16.S}[1], [x0], x1
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st1 {v0.S}[1], [x0], x1
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st1 {v19.S}[1], [x0], x1
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st1 {v17.S}[2], [x0], x1
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st1 {v16.S}[2], [x0], x1
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st1 {v0.S}[2], [x0], x1
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st1 {v19.S}[2], [x0], x1
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st1 {v17.S}[3], [x0], x1
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st1 {v16.S}[3], [x0], x1
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st1 {v0.S}[3], [x0], x1
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st1 {v19.S}[3], [x0], x1
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ret
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endfunc
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.macro h264_loop_filter_chroma
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dup v22.8B, w2 // alpha
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uxtl v24.8H, v24.8B
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uabd v26.8B, v16.8B, v0.8B // abs(p0 - q0)
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uxtl v4.8H, v0.8B
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uabd v28.8B, v18.8B, v16.8B // abs(p1 - p0)
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usubw v4.8H, v4.8H, v16.8B
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sli v24.8H, v24.8H, #8
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shl v4.8H, v4.8H, #2
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uabd v30.8B, v2.8B, v0.8B // abs(q1 - q0)
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uaddw v4.8H, v4.8H, v18.8B
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cmhi v26.8B, v22.8B, v26.8B // < alpha
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usubw v4.8H, v4.8H, v2.8B
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dup v22.8B, w3 // beta
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rshrn v4.8B, v4.8H, #3
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cmhi v28.8B, v22.8B, v28.8B // < beta
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cmhi v30.8B, v22.8B, v30.8B // < beta
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smin v4.8B, v4.8B, v24.8B
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neg v25.8B, v24.8B
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and v26.8B, v26.8B, v28.8B
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smax v4.8B, v4.8B, v25.8B
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and v26.8B, v26.8B, v30.8B
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uxtl v22.8H, v0.8B
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and v4.8B, v4.8B, v26.8B
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uxtl v28.8H, v16.8B
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saddw v28.8H, v28.8H, v4.8B
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ssubw v22.8H, v22.8H, v4.8B
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sqxtun v16.8B, v28.8H
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sqxtun v0.8B, v22.8H
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.endm
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function ff_h264_v_loop_filter_chroma_neon, export=1
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h264_loop_filter_start
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sub x0, x0, x1, lsl #1
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ld1 {v18.8B}, [x0], x1
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ld1 {v16.8B}, [x0], x1
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ld1 {v0.8B}, [x0], x1
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ld1 {v2.8B}, [x0]
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h264_loop_filter_chroma
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sub x0, x0, x1, lsl #1
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st1 {v16.8B}, [x0], x1
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st1 {v0.8B}, [x0], x1
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ret
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endfunc
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function ff_h264_h_loop_filter_chroma_neon, export=1
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h264_loop_filter_start
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sub x0, x0, #2
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ld1 {v18.S}[0], [x0], x1
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ld1 {v16.S}[0], [x0], x1
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ld1 {v0.S}[0], [x0], x1
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ld1 {v2.S}[0], [x0], x1
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ld1 {v18.S}[1], [x0], x1
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ld1 {v16.S}[1], [x0], x1
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ld1 {v0.S}[1], [x0], x1
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ld1 {v2.S}[1], [x0], x1
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transpose_4x8B v18, v16, v0, v2, v28, v29, v30, v31
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h264_loop_filter_chroma
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transpose_4x8B v18, v16, v0, v2, v28, v29, v30, v31
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sub x0, x0, x1, lsl #3
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st1 {v18.S}[0], [x0], x1
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st1 {v16.S}[0], [x0], x1
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st1 {v0.S}[0], [x0], x1
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st1 {v2.S}[0], [x0], x1
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st1 {v18.S}[1], [x0], x1
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st1 {v16.S}[1], [x0], x1
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st1 {v0.S}[1], [x0], x1
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st1 {v2.S}[1], [x0], x1
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ret
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endfunc
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