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libswscale/aarch64/input.S
403 строки
15 KB
Krzysztof Pyrkosz
swscale/aarch64: dotprod implementation of rgba32_to_Y
04 мар 2025, 11:16
04 мар 2025, 11:16
d765e5f
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/* * Copyright (c) 2024 Zhao Zhili <quinkblack@foxmail.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 rgb_to_yuv_load_rgb src, element=3 .if \element == 3 ld3 { v16.16b, v17.16b, v18.16b }, [\src] .else ld4 { v16.16b, v17.16b, v18.16b, v19.16b }, [\src] .endif uxtl v19.8h, v16.8b // v19: r uxtl v20.8h, v17.8b // v20: g uxtl v21.8h, v18.8b // v21: b uxtl2 v22.8h, v16.16b // v22: r uxtl2 v23.8h, v17.16b // v23: g uxtl2 v24.8h, v18.16b // v24: b .endm .macro argb_to_yuv_load_rgb src ld4 { v16.16b, v17.16b, v18.16b, v19.16b }, [\src] uxtl v21.8h, v19.8b // v21: b uxtl2 v24.8h, v19.16b // v24: b uxtl v19.8h, v17.8b // v19: r uxtl v20.8h, v18.8b // v20: g uxtl2 v22.8h, v17.16b // v22: r uxtl2 v23.8h, v18.16b // v23: g .endm .macro rgb_to_yuv_product r, g, b, dst1, dst2, dst, coef0, coef1, coef2, right_shift mov \dst1\().16b, v6.16b // dst1 = const_offset mov \dst2\().16b, v6.16b // dst2 = const_offset smlal \dst1\().4s, \coef0\().4h, \r\().4h // dst1 += rx * r smlal \dst1\().4s, \coef1\().4h, \g\().4h // dst1 += gx * g smlal \dst1\().4s, \coef2\().4h, \b\().4h // dst1 += bx * b smlal2 \dst2\().4s, \coef0\().8h, \r\().8h // dst2 += rx * r smlal2 \dst2\().4s, \coef1\().8h, \g\().8h // dst2 += gx * g smlal2 \dst2\().4s, \coef2\().8h, \b\().8h // dst2 += bx * b sqshrn \dst\().4h, \dst1\().4s, \right_shift // dst_lower_half = dst1 >> right_shift sqshrn2 \dst\().8h, \dst2\().4s, \right_shift // dst_higher_half = dst2 >> right_shift .endm .macro rgbToY_neon fmt_bgr, fmt_rgb, element, alpha_first=0 function ff_\fmt_bgr\()ToY_neon, export=1 cmp w4, #0 // check width > 0 ldp w12, w11, [x5] // w12: ry, w11: gy ldr w10, [x5, #8] // w10: by b.gt 4f ret endfunc function ff_\fmt_rgb\()ToY_neon, export=1 cmp w4, #0 // check width > 0 ldp w10, w11, [x5] // w10: ry, w11: gy ldr w12, [x5, #8] // w12: by b.le 3f 4: mov w9, #256 // w9 = 1 << (RGB2YUV_SHIFT - 7) movk w9, #8, lsl #16 // w9 += 32 << (RGB2YUV_SHIFT - 1) dup v6.4s, w9 // w9: const_offset cmp w4, #16 dup v0.8h, w10 dup v1.8h, w11 dup v2.8h, w12 b.lt 2f 1: .if \alpha_first argb_to_yuv_load_rgb x1 .else rgb_to_yuv_load_rgb x1, \element .endif rgb_to_yuv_product v19, v20, v21, v25, v26, v16, v0, v1, v2, #9 rgb_to_yuv_product v22, v23, v24, v27, v28, v17, v0, v1, v2, #9 sub w4, w4, #16 // width -= 16 add x1, x1, #(16*\element) cmp w4, #16 // width >= 16 ? stp q16, q17, [x0], #32 // store to dst b.ge 1b cbz x4, 3f 2: .if \alpha_first ldrb w13, [x1, #1] // w13: r ldrb w14, [x1, #2] // w14: g ldrb w15, [x1, #3] // w15: b .else ldrb w13, [x1] // w13: r ldrb w14, [x1, #1] // w14: g ldrb w15, [x1, #2] // w15: b .endif smaddl x13, w13, w10, x9 // x13 = ry * r + const_offset smaddl x13, w14, w11, x13 // x13 += gy * g smaddl x13, w15, w12, x13 // x13 += by * b asr w13, w13, #9 // x13 >>= 9 sub w4, w4, #1 // width-- add x1, x1, #\element strh w13, [x0], #2 // store to dst cbnz w4, 2b 3: ret endfunc .endm rgbToY_neon bgr24, rgb24, element=3 rgbToY_neon bgra32, rgba32, element=4 rgbToY_neon abgr32, argb32, element=4, alpha_first=1 .macro rgb_set_uv_coeff half .if \half mov w9, #512 movk w9, #128, lsl #16 // w9: const_offset .else mov w9, #256 movk w9, #64, lsl #16 // w9: const_offset .endif dup v0.8h, w10 dup v1.8h, w11 dup v2.8h, w12 dup v3.8h, w13 dup v4.8h, w14 dup v5.8h, w15 dup v6.4s, w9 .endm .macro rgb_load_add_half off_r1, off_r2, off_g1, off_g2, off_b1, off_b2 ldrb w2, [x3, #\off_r1] // w2: r1 ldrb w4, [x3, #\off_r2] // w4: r2 add w2, w2, w4 // w2 = r1 + r2 ldrb w4, [x3, #\off_g1] // w4: g1 ldrb w7, [x3, #\off_g2] // w7: g2 add w4, w4, w7 // w4 = g1 + g2 ldrb w7, [x3, #\off_b1] // w7: b1 ldrb w8, [x3, #\off_b2] // w8: b2 add w7, w7, w8 // w7 = b1 + b2 .endm .macro rgbToUV_half_neon fmt_bgr, fmt_rgb, element, alpha_first=0 function ff_\fmt_bgr\()ToUV_half_neon, export=1 cmp w5, #0 // check width > 0 b.le 3f ldp w12, w11, [x6, #12] ldp w10, w15, [x6, #20] ldp w14, w13, [x6, #28] b 4f endfunc function ff_\fmt_rgb\()ToUV_half_neon, export=1 cmp w5, #0 // check width > 0 b.le 3f ldp w10, w11, [x6, #12] // w10: ru, w11: gu ldp w12, w13, [x6, #20] // w12: bu, w13: rv ldp w14, w15, [x6, #28] // w14: gv, w15: bv 4: cmp w5, #8 rgb_set_uv_coeff half=1 b.lt 2f 1: .if \element == 3 ld3 { v16.16b, v17.16b, v18.16b }, [x3] .else ld4 { v16.16b, v17.16b, v18.16b, v19.16b }, [x3] .endif .if \alpha_first uaddlp v21.8h, v19.16b uaddlp v20.8h, v18.16b uaddlp v19.8h, v17.16b .else uaddlp v19.8h, v16.16b // v19: r uaddlp v20.8h, v17.16b // v20: g uaddlp v21.8h, v18.16b // v21: b .endif rgb_to_yuv_product v19, v20, v21, v22, v23, v16, v0, v1, v2, #10 rgb_to_yuv_product v19, v20, v21, v24, v25, v17, v3, v4, v5, #10 sub w5, w5, #8 // width -= 8 add x3, x3, #(16*\element) cmp w5, #8 // width >= 8 ? str q16, [x0], #16 // store dst_u str q17, [x1], #16 // store dst_v b.ge 1b cbz w5, 3f 2: .if \alpha_first rgb_load_add_half 1, 5, 2, 6, 3, 7 .else .if \element == 3 rgb_load_add_half 0, 3, 1, 4, 2, 5 .else rgb_load_add_half 0, 4, 1, 5, 2, 6 .endif .endif smaddl x8, w2, w10, x9 // dst_u = ru * r + const_offset smaddl x8, w4, w11, x8 // dst_u += gu * g smaddl x8, w7, w12, x8 // dst_u += bu * b asr x8, x8, #10 // dst_u >>= 10 strh w8, [x0], #2 // store dst_u smaddl x8, w2, w13, x9 // dst_v = rv * r + const_offset smaddl x8, w4, w14, x8 // dst_v += gv * g smaddl x8, w7, w15, x8 // dst_v += bv * b asr x8, x8, #10 // dst_v >>= 10 sub w5, w5, #1 add x3, x3, #(2*\element) strh w8, [x1], #2 // store dst_v cbnz w5, 2b 3: ret endfunc .endm rgbToUV_half_neon bgr24, rgb24, element=3 rgbToUV_half_neon bgra32, rgba32, element=4 rgbToUV_half_neon abgr32, argb32, element=4, alpha_first=1 .macro rgbToUV_neon fmt_bgr, fmt_rgb, element, alpha_first=0 function ff_\fmt_bgr\()ToUV_neon, export=1 cmp w5, #0 // check width > 0 b.le 3f ldp w12, w11, [x6, #12] ldp w10, w15, [x6, #20] ldp w14, w13, [x6, #28] b 4f endfunc function ff_\fmt_rgb\()ToUV_neon, export=1 cmp w5, #0 // check width > 0 b.le 3f ldp w10, w11, [x6, #12] // w10: ru, w11: gu ldp w12, w13, [x6, #20] // w12: bu, w13: rv ldp w14, w15, [x6, #28] // w14: gv, w15: bv 4: cmp w5, #16 rgb_set_uv_coeff half=0 b.lt 2f 1: .if \alpha_first argb_to_yuv_load_rgb x3 .else rgb_to_yuv_load_rgb x3, \element .endif rgb_to_yuv_product v19, v20, v21, v25, v26, v16, v0, v1, v2, #9 rgb_to_yuv_product v22, v23, v24, v27, v28, v17, v0, v1, v2, #9 rgb_to_yuv_product v19, v20, v21, v25, v26, v18, v3, v4, v5, #9 rgb_to_yuv_product v22, v23, v24, v27, v28, v19, v3, v4, v5, #9 sub w5, w5, #16 add x3, x3, #(16*\element) cmp w5, #16 stp q16, q17, [x0], #32 // store to dst_u stp q18, q19, [x1], #32 // store to dst_v b.ge 1b cbz w5, 3f 2: .if \alpha_first ldrb w16, [x3, #1] // w16: r ldrb w17, [x3, #2] // w17: g ldrb w4, [x3, #3] // w4: b .else ldrb w16, [x3] // w16: r ldrb w17, [x3, #1] // w17: g ldrb w4, [x3, #2] // w4: b .endif smaddl x8, w16, w10, x9 // x8 = ru * r + const_offset smaddl x8, w17, w11, x8 // x8 += gu * g smaddl x8, w4, w12, x8 // x8 += bu * b asr w8, w8, #9 // x8 >>= 9 strh w8, [x0], #2 // store to dst_u smaddl x8, w16, w13, x9 // x8 = rv * r + const_offset smaddl x8, w17, w14, x8 // x8 += gv * g smaddl x8, w4, w15, x8 // x8 += bv * b asr w8, w8, #9 // x8 >>= 9 sub w5, w5, #1 // width-- add x3, x3, #\element strh w8, [x1], #2 // store to dst_v cbnz w5, 2b 3: ret endfunc .endm rgbToUV_neon bgr24, rgb24, element=3 rgbToUV_neon bgra32, rgba32, element=4 rgbToUV_neon abgr32, argb32, element=4, alpha_first=1 #if HAVE_DOTPROD ENABLE_DOTPROD function ff_bgra32ToY_neon_dotprod, export=1 cmp w4, #0 // check width > 0 ldp w12, w11, [x5] // w12: ry, w11: gy ldr w10, [x5, #8] // w10: by b.gt 4f ret endfunc function ff_rgba32ToY_neon_dotprod, export=1 cmp w4, #0 // check width > 0 ldp w10, w11, [x5] // w10: ry, w11: gy ldr w12, [x5, #8] // w12: by b.le 3f 4: mov w9, #256 // w9 = 1 << (RGB2YUV_SHIFT - 7) movk w9, #8, lsl #16 // w9 += 32 << (RGB2YUV_SHIFT - 1) dup v6.4s, w9 // w9: const_offset cmp w4, #16 mov w7, w10 bfi w7, w11, 8, 8 // the bfi instructions are used to assemble bfi w7, w12, 16, 8 // 4 byte r,g,b,0 mask to be then used by udot. dup v0.4s, w7 // v0 holds the lower byte of each coefficient lsr w6, w10, #8 lsr w7, w11, #8 lsr w8, w12, #8 bfi w6, w7, 8, 8 bfi w6, w8, 16, 8 dup v1.4s, w6 // v1 holds the upper byte of each coefficient b.lt 2f 1: ld1 { v16.16b, v17.16b, v18.16b, v19.16b }, [x1], #64 sub w4, w4, #16 // width -= 16 mov v2.16b, v6.16b mov v3.16b, v6.16b mov v4.16b, v6.16b mov v5.16b, v6.16b cmp w4, #16 // width >= 16 ? udot v2.4s, v16.16b, v0.16b udot v3.4s, v17.16b, v0.16b udot v4.4s, v18.16b, v0.16b udot v5.4s, v19.16b, v0.16b ushr v2.4s, v2.4s, #8 ushr v3.4s, v3.4s, #8 ushr v4.4s, v4.4s, #8 ushr v5.4s, v5.4s, #8 udot v2.4s, v16.16b, v1.16b udot v3.4s, v17.16b, v1.16b udot v4.4s, v18.16b, v1.16b udot v5.4s, v19.16b, v1.16b sqshrn v16.4h, v2.4s, #1 sqshrn2 v16.8h, v3.4s, #1 sqshrn v17.4h, v4.4s, #1 sqshrn2 v17.8h, v5.4s, #1 stp q16, q17, [x0], #32 // store to dst b.ge 1b cbz x4, 3f 2: ldrb w13, [x1] // w13: r ldrb w14, [x1, #1] // w14: g ldrb w15, [x1, #2] // w15: b smaddl x13, w13, w10, x9 // x13 = ry * r + const_offset smaddl x13, w14, w11, x13 // x13 += gy * g smaddl x13, w15, w12, x13 // x13 += by * b asr w13, w13, #9 // x13 >>= 9 sub w4, w4, #1 // width-- add x1, x1, #4 strh w13, [x0], #2 // store to dst cbnz w4, 2b 3: ret endfunc DISABLE_DOTPROD #endif