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Diffstat (limited to 'libswscale/aarch64/yuv2rgb_neon.S')
| -rw-r--r-- | libswscale/aarch64/yuv2rgb_neon.S | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/libswscale/aarch64/yuv2rgb_neon.S b/libswscale/aarch64/yuv2rgb_neon.S new file mode 100644 index 0000000000..b7446aa105 --- /dev/null +++ b/libswscale/aarch64/yuv2rgb_neon.S @@ -0,0 +1,210 @@ +/* + * Copyright (c) 2016 Matthieu Bouron <matthieu.bouron stupeflix.com> + * Copyright (c) 2016 Clément Bœsch <clement 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/aarch64/asm.S" + +.macro load_yoff_ycoeff yoff ycoeff +#if defined(__APPLE__) + ldp w9, w10, [sp, #\yoff] +#else + ldr w9, [sp, #\yoff] + ldr w10, [sp, #\ycoeff] +#endif +.endm + +.macro load_args_nv12 + ldr x8, [sp] // table + load_yoff_ycoeff 8, 16 // y_offset, y_coeff + ld1 {v1.1D}, [x8] + dup v0.8H, w10 + dup v3.8H, w9 + sub w3, w3, w0, lsl #2 // w3 = linesize - width * 4 (padding) + sub w5, w5, w0 // w5 = linesizeY - width (paddingY) + sub w7, w7, w0 // w7 = linesizeC - width (paddingC) + neg w11, w0 +.endm + +.macro load_args_nv21 + load_args_nv12 +.endm + +.macro load_args_yuv420p + ldr x13, [sp] // srcV + ldr w14, [sp, #8] // linesizeV + ldr x8, [sp, #16] // table + load_yoff_ycoeff 24, 32 // y_offset, y_coeff + ld1 {v1.1D}, [x8] + dup v0.8H, w10 + dup v3.8H, w9 + sub w3, w3, w0, lsl #2 // w3 = linesize - width * 4 (padding) + sub w5, w5, w0 // w5 = linesizeY - width (paddingY) + sub w7, w7, w0, lsr #1 // w7 = linesizeU - width / 2 (paddingU) + sub w14, w14, w0, lsr #1 // w14 = linesizeV - width / 2 (paddingV) + lsr w11, w0, #1 + neg w11, w11 +.endm + +.macro load_args_yuv422p + ldr x13, [sp] // srcV + ldr w14, [sp, #8] // linesizeV + ldr x8, [sp, #16] // table + load_yoff_ycoeff 24, 32 // y_offset, y_coeff + ld1 {v1.1D}, [x8] + dup v0.8H, w10 + dup v3.8H, w9 + sub w3, w3, w0, lsl #2 // w3 = linesize - width * 4 (padding) + sub w5, w5, w0 // w5 = linesizeY - width (paddingY) + sub w7, w7, w0, lsr #1 // w7 = linesizeU - width / 2 (paddingU) + sub w14, w14, w0, lsr #1 // w14 = linesizeV - width / 2 (paddingV) +.endm + +.macro load_chroma_nv12 + ld2 {v16.8B, v17.8B}, [x6], #16 + ushll v18.8H, v16.8B, #3 + ushll v19.8H, v17.8B, #3 +.endm + +.macro load_chroma_nv21 + ld2 {v16.8B, v17.8B}, [x6], #16 + ushll v19.8H, v16.8B, #3 + ushll v18.8H, v17.8B, #3 +.endm + +.macro load_chroma_yuv420p + ld1 {v16.8B}, [ x6], #8 + ld1 {v17.8B}, [x13], #8 + ushll v18.8H, v16.8B, #3 + ushll v19.8H, v17.8B, #3 +.endm + +.macro load_chroma_yuv422p + load_chroma_yuv420p +.endm + +.macro increment_nv12 + ands w15, w1, #1 + csel w16, w7, w11, ne // incC = (h & 1) ? paddincC : -width + add x6, x6, w16, SXTW // srcC += incC +.endm + +.macro increment_nv21 + increment_nv12 +.endm + +.macro increment_yuv420p + ands w15, w1, #1 + csel w16, w7, w11, ne // incU = (h & 1) ? paddincU : -width/2 + csel w17, w14, w11, ne // incV = (h & 1) ? paddincV : -width/2 + add x6, x6, w16, SXTW // srcU += incU + add x13, x13, w17, SXTW // srcV += incV +.endm + +.macro increment_yuv422p + add x6, x6, w7, UXTW // srcU += incU + add x13, x13, w14, UXTW // srcV += incV +.endm + +.macro compute_rgba r1 g1 b1 a1 r2 g2 b2 a2 + add v20.8H, v26.8H, v20.8H // Y1 + R1 + add v21.8H, v27.8H, v21.8H // Y2 + R2 + add v22.8H, v26.8H, v22.8H // Y1 + G1 + add v23.8H, v27.8H, v23.8H // Y2 + G2 + add v24.8H, v26.8H, v24.8H // Y1 + B1 + add v25.8H, v27.8H, v25.8H // Y2 + B2 + sqrshrun \r1, v20.8H, #1 // clip_u8((Y1 + R1) >> 1) + sqrshrun \r2, v21.8H, #1 // clip_u8((Y2 + R1) >> 1) + sqrshrun \g1, v22.8H, #1 // clip_u8((Y1 + G1) >> 1) + sqrshrun \g2, v23.8H, #1 // clip_u8((Y2 + G1) >> 1) + sqrshrun \b1, v24.8H, #1 // clip_u8((Y1 + B1) >> 1) + sqrshrun \b2, v25.8H, #1 // clip_u8((Y2 + B1) >> 1) + movi \a1, #255 + movi \a2, #255 +.endm + +.macro declare_func ifmt ofmt +function ff_\ifmt\()_to_\ofmt\()_neon, export=1 + load_args_\ifmt +1: + mov w8, w0 // w8 = width +2: + movi v5.8H, #4, lsl #8 // 128 * (1<<3) + load_chroma_\ifmt + sub v18.8H, v18.8H, v5.8H // U*(1<<3) - 128*(1<<3) + sub v19.8H, v19.8H, v5.8H // V*(1<<3) - 128*(1<<3) + sqdmulh v20.8H, v19.8H, v1.H[0] // V * v2r (R) + sqdmulh v22.8H, v18.8H, v1.H[1] // U * u2g + sqdmulh v19.8H, v19.8H, v1.H[2] // V * v2g + add v22.8H, v22.8H, v19.8H // U * u2g + V * v2g (G) + sqdmulh v24.8H, v18.8H, v1.H[3] // U * u2b (B) + zip2 v21.8H, v20.8H, v20.8H // R2 + zip1 v20.8H, v20.8H, v20.8H // R1 + zip2 v23.8H, v22.8H, v22.8H // G2 + zip1 v22.8H, v22.8H, v22.8H // G1 + zip2 v25.8H, v24.8H, v24.8H // B2 + zip1 v24.8H, v24.8H, v24.8H // B1 + ld1 {v2.16B}, [x4], #16 // load luma + ushll v26.8H, v2.8B, #3 // Y1*(1<<3) + ushll2 v27.8H, v2.16B, #3 // Y2*(1<<3) + sub v26.8H, v26.8H, v3.8H // Y1*(1<<3) - y_offset + sub v27.8H, v27.8H, v3.8H // Y2*(1<<3) - y_offset + sqdmulh v26.8H, v26.8H, v0.8H // ((Y1*(1<<3) - y_offset) * y_coeff) >> 15 + sqdmulh v27.8H, v27.8H, v0.8H // ((Y2*(1<<3) - y_offset) * y_coeff) >> 15 + +.ifc \ofmt,argb // 1 2 3 0 + compute_rgba v5.8B,v6.8B,v7.8B,v4.8B, v17.8B,v18.8B,v19.8B,v16.8B +.endif + +.ifc \ofmt,rgba // 0 1 2 3 + compute_rgba v4.8B,v5.8B,v6.8B,v7.8B, v16.8B,v17.8B,v18.8B,v19.8B +.endif + +.ifc \ofmt,abgr // 3 2 1 0 + compute_rgba v7.8B,v6.8B,v5.8B,v4.8B, v19.8B,v18.8B,v17.8B,v16.8B +.endif + +.ifc \ofmt,bgra // 2 1 0 3 + compute_rgba v6.8B,v5.8B,v4.8B,v7.8B, v18.8B,v17.8B,v16.8B,v19.8B +.endif + + st4 { v4.8B, v5.8B, v6.8B, v7.8B}, [x2], #32 + st4 {v16.8B,v17.8B,v18.8B,v19.8B}, [x2], #32 + subs w8, w8, #16 // width -= 16 + b.gt 2b + add x2, x2, w3, UXTW // dst += padding + add x4, x4, w5, UXTW // srcY += paddingY + increment_\ifmt + subs w1, w1, #1 // height -= 1 + b.gt 1b + ret +endfunc +.endm + +.macro declare_rgb_funcs ifmt + declare_func \ifmt, argb + declare_func \ifmt, rgba + declare_func \ifmt, abgr + declare_func \ifmt, bgra +.endm + +declare_rgb_funcs nv12 +declare_rgb_funcs nv21 +declare_rgb_funcs yuv420p +declare_rgb_funcs yuv422p |