mirror of
https://github.com/FFmpeg/FFmpeg.git
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260 lines
12 KiB
ArmAsm
260 lines
12 KiB
ArmAsm
/*
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* Copyright (c) 2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
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* Copyright (c) 2016 Clément Bœsch <clement stupeflix.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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.macro load_yoff_ycoeff yoff ycoeff
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#if defined(__APPLE__)
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ldp w9, w10, [sp, #\yoff]
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#else
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ldr w9, [sp, #\yoff]
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ldr w10, [sp, #\ycoeff]
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#endif
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.endm
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.macro load_dst1_dst2 dst1 linesize1 dst2 linesize2
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#if defined(__APPLE__)
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#define DST_OFFSET 8
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#else
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#define DST_OFFSET 0
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#endif
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ldr x10, [sp, #\dst1 - DST_OFFSET]
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ldr w12, [sp, #\linesize1 - DST_OFFSET]
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ldr x15, [sp, #\dst2 - DST_OFFSET]
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ldr w16, [sp, #\linesize2 - DST_OFFSET]
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#undef DST_OFFSET
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sub w12, w12, w0 // w12 = linesize1 - width (padding1)
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sub w16, w16, w0 // w16 = linesize2 - width (padding2)
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.endm
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.macro load_args_nv12 ofmt
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ldr x8, [sp] // table
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load_yoff_ycoeff 8, 16 // y_offset, y_coeff
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ld1 {v1.1d}, [x8]
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dup v0.8h, w10
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dup v3.8h, w9
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.ifc \ofmt,gbrp
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load_dst1_dst2 24, 32, 40, 48
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sub w3, w3, w0 // w3 = linesize - width (padding)
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.else
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sub w3, w3, w0, lsl #2 // w3 = linesize - width * 4 (padding)
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.endif
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sub w5, w5, w0 // w5 = linesizeY - width (paddingY)
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sub w7, w7, w0 // w7 = linesizeC - width (paddingC)
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neg w11, w0
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.endm
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.macro load_args_nv21 ofmt
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load_args_nv12 \ofmt
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.endm
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.macro load_args_yuv420p ofmt
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ldr x13, [sp] // srcV
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ldr w14, [sp, #8] // linesizeV
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ldr x8, [sp, #16] // table
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load_yoff_ycoeff 24, 32 // y_offset, y_coeff
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ld1 {v1.1d}, [x8]
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dup v0.8h, w10
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dup v3.8h, w9
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.ifc \ofmt,gbrp
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load_dst1_dst2 40, 48, 56, 64
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sub w3, w3, w0 // w3 = linesize - width (padding)
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.else
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sub w3, w3, w0, lsl #2 // w3 = linesize - width * 4 (padding)
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.endif
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sub w5, w5, w0 // w5 = linesizeY - width (paddingY)
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sub w7, w7, w0, lsr #1 // w7 = linesizeU - width / 2 (paddingU)
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sub w14, w14, w0, lsr #1 // w14 = linesizeV - width / 2 (paddingV)
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lsr w11, w0, #1
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neg w11, w11
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.endm
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.macro load_args_yuv422p ofmt
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ldr x13, [sp] // srcV
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ldr w14, [sp, #8] // linesizeV
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ldr x8, [sp, #16] // table
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load_yoff_ycoeff 24, 32 // y_offset, y_coeff
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ld1 {v1.1d}, [x8]
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dup v0.8h, w10
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dup v3.8h, w9
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.ifc \ofmt,gbrp
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load_dst1_dst2 40, 48, 56, 64
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sub w3, w3, w0 // w3 = linesize - width (padding)
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.else
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sub w3, w3, w0, lsl #2 // w3 = linesize - width * 4 (padding)
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.endif
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sub w5, w5, w0 // w5 = linesizeY - width (paddingY)
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sub w7, w7, w0, lsr #1 // w7 = linesizeU - width / 2 (paddingU)
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sub w14, w14, w0, lsr #1 // w14 = linesizeV - width / 2 (paddingV)
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.endm
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.macro load_chroma_nv12
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ld2 {v16.8b, v17.8b}, [x6], #16
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ushll v18.8h, v16.8b, #3
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ushll v19.8h, v17.8b, #3
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.endm
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.macro load_chroma_nv21
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ld2 {v16.8b, v17.8b}, [x6], #16
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ushll v19.8h, v16.8b, #3
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ushll v18.8h, v17.8b, #3
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.endm
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.macro load_chroma_yuv420p
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ld1 {v16.8b}, [ x6], #8
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ld1 {v17.8b}, [x13], #8
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ushll v18.8h, v16.8b, #3
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ushll v19.8h, v17.8b, #3
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.endm
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.macro load_chroma_yuv422p
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load_chroma_yuv420p
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.endm
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.macro increment_nv12
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ands w17, w1, #1
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csel w17, w7, w11, ne // incC = (h & 1) ? paddincC : -width
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add x6, x6, w17, sxtw // srcC += incC
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.endm
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.macro increment_nv21
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increment_nv12
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.endm
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.macro increment_yuv420p
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ands w17, w1, #1
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csel w17, w7, w11, ne // incU = (h & 1) ? paddincU : -width/2
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add x6, x6, w17, sxtw // srcU += incU
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csel w17, w14, w11, ne // incV = (h & 1) ? paddincV : -width/2
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add x13, x13, w17, sxtw // srcV += incV
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.endm
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.macro increment_yuv422p
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add x6, x6, w7, sxtw // srcU += incU
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add x13, x13, w14, sxtw // srcV += incV
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.endm
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.macro compute_rgb r1 g1 b1 r2 g2 b2
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add v20.8h, v26.8h, v20.8h // Y1 + R1
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add v21.8h, v27.8h, v21.8h // Y2 + R2
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add v22.8h, v26.8h, v22.8h // Y1 + G1
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add v23.8h, v27.8h, v23.8h // Y2 + G2
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add v24.8h, v26.8h, v24.8h // Y1 + B1
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add v25.8h, v27.8h, v25.8h // Y2 + B2
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sqrshrun \r1, v20.8h, #1 // clip_u8((Y1 + R1) >> 1)
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sqrshrun \r2, v21.8h, #1 // clip_u8((Y2 + R1) >> 1)
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sqrshrun \g1, v22.8h, #1 // clip_u8((Y1 + G1) >> 1)
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sqrshrun \g2, v23.8h, #1 // clip_u8((Y2 + G1) >> 1)
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sqrshrun \b1, v24.8h, #1 // clip_u8((Y1 + B1) >> 1)
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sqrshrun \b2, v25.8h, #1 // clip_u8((Y2 + B1) >> 1)
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.endm
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.macro compute_rgba r1 g1 b1 a1 r2 g2 b2 a2
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compute_rgb \r1, \g1, \b1, \r2, \g2, \b2
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movi \a1, #255
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movi \a2, #255
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.endm
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.macro declare_func ifmt ofmt
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function ff_\ifmt\()_to_\ofmt\()_neon, export=1
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load_args_\ifmt \ofmt
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mov w9, w1
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1:
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mov w8, w0 // w8 = width
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2:
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movi v5.8h, #4, lsl #8 // 128 * (1<<3)
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load_chroma_\ifmt
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sub v18.8h, v18.8h, v5.8h // U*(1<<3) - 128*(1<<3)
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sub v19.8h, v19.8h, v5.8h // V*(1<<3) - 128*(1<<3)
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sqdmulh v20.8h, v19.8h, v1.h[0] // V * v2r (R)
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sqdmulh v22.8h, v18.8h, v1.h[1] // U * u2g
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sqdmulh v19.8h, v19.8h, v1.h[2] // V * v2g
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add v22.8h, v22.8h, v19.8h // U * u2g + V * v2g (G)
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sqdmulh v24.8h, v18.8h, v1.h[3] // U * u2b (B)
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zip2 v21.8h, v20.8h, v20.8h // R2
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zip1 v20.8h, v20.8h, v20.8h // R1
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zip2 v23.8h, v22.8h, v22.8h // G2
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zip1 v22.8h, v22.8h, v22.8h // G1
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zip2 v25.8h, v24.8h, v24.8h // B2
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zip1 v24.8h, v24.8h, v24.8h // B1
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ld1 {v2.16b}, [x4], #16 // load luma
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ushll v26.8h, v2.8b, #3 // Y1*(1<<3)
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ushll2 v27.8h, v2.16b, #3 // Y2*(1<<3)
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sub v26.8h, v26.8h, v3.8h // Y1*(1<<3) - y_offset
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sub v27.8h, v27.8h, v3.8h // Y2*(1<<3) - y_offset
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sqdmulh v26.8h, v26.8h, v0.8h // ((Y1*(1<<3) - y_offset) * y_coeff) >> 15
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sqdmulh v27.8h, v27.8h, v0.8h // ((Y2*(1<<3) - y_offset) * y_coeff) >> 15
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.ifc \ofmt,argb // 1 2 3 0
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compute_rgba v5.8b,v6.8b,v7.8b,v4.8b, v17.8b,v18.8b,v19.8b,v16.8b
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.endif
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.ifc \ofmt,rgba // 0 1 2 3
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compute_rgba v4.8b,v5.8b,v6.8b,v7.8b, v16.8b,v17.8b,v18.8b,v19.8b
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.endif
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.ifc \ofmt,abgr // 3 2 1 0
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compute_rgba v7.8b,v6.8b,v5.8b,v4.8b, v19.8b,v18.8b,v17.8b,v16.8b
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.endif
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.ifc \ofmt,bgra // 2 1 0 3
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compute_rgba v6.8b,v5.8b,v4.8b,v7.8b, v18.8b,v17.8b,v16.8b,v19.8b
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.endif
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.ifc \ofmt,gbrp
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compute_rgb v18.8b,v4.8b,v6.8b, v19.8b,v5.8b,v7.8b
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st1 { v4.8b, v5.8b }, [x2], #16
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st1 { v6.8b, v7.8b }, [x10], #16
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st1 { v18.8b, v19.8b }, [x15], #16
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.else
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st4 { v4.8b, v5.8b, v6.8b, v7.8b}, [x2], #32
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st4 {v16.8b,v17.8b,v18.8b,v19.8b}, [x2], #32
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.endif
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subs w8, w8, #16 // width -= 16
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b.gt 2b
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add x2, x2, w3, sxtw // dst += padding
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.ifc \ofmt,gbrp
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add x10, x10, w12, sxtw // dst1 += padding1
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add x15, x15, w16, sxtw // dst2 += padding2
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.endif
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add x4, x4, w5, sxtw // srcY += paddingY
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increment_\ifmt
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subs w1, w1, #1 // height -= 1
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b.gt 1b
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mov w0, w9
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ret
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endfunc
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.endm
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.macro declare_rgb_funcs ifmt
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declare_func \ifmt, argb
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declare_func \ifmt, rgba
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declare_func \ifmt, abgr
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declare_func \ifmt, bgra
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declare_func \ifmt, gbrp
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.endm
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declare_rgb_funcs nv12
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declare_rgb_funcs nv21
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declare_rgb_funcs yuv420p
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declare_rgb_funcs yuv422p
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