/* * Copyright 2014 The LibYuv Project Authors. All rights reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include "libyuv/row.h" #ifdef __cplusplus namespace libyuv { extern "C" { #endif // This module is for GCC Neon armv8 64 bit. #if !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__) // Read 8 Y, 4 U and 4 V from 422 #define READYUV422 \ MEMACCESS(0) \ "ld1 {v0.8b}, [%0], #8 \n" \ MEMACCESS(1) \ "ld1 {v1.s}[0], [%1], #4 \n" \ MEMACCESS(2) \ "ld1 {v1.s}[1], [%2], #4 \n" // Read 8 Y, 8 U and 8 V from 444 #define READYUV444 \ MEMACCESS(0) \ "ld1 {v0.8b}, [%0], #8 \n" \ MEMACCESS(1) \ "ld1 {v1.d}[0], [%1], #8 \n" \ MEMACCESS(2) \ "ld1 {v1.d}[1], [%2], #8 \n" \ "uaddlp v1.8h, v1.16b \n" \ "rshrn v1.8b, v1.8h, #1 \n" // Read 8 Y, and set 4 U and 4 V to 128 #define READYUV400 \ MEMACCESS(0) \ "ld1 {v0.8b}, [%0], #8 \n" \ "movi v1.8b , #128 \n" // Read 8 Y and 4 UV from NV12 #define READNV12 \ MEMACCESS(0) \ "ld1 {v0.8b}, [%0], #8 \n" \ MEMACCESS(1) \ "ld1 {v2.8b}, [%1], #8 \n" \ "uzp1 v1.8b, v2.8b, v2.8b \n" \ "uzp2 v3.8b, v2.8b, v2.8b \n" \ "ins v1.s[1], v3.s[0] \n" // Read 8 Y and 4 VU from NV21 #define READNV21 \ MEMACCESS(0) \ "ld1 {v0.8b}, [%0], #8 \n" \ MEMACCESS(1) \ "ld1 {v2.8b}, [%1], #8 \n" \ "uzp1 v3.8b, v2.8b, v2.8b \n" \ "uzp2 v1.8b, v2.8b, v2.8b \n" \ "ins v1.s[1], v3.s[0] \n" // Read 8 YUY2 #define READYUY2 \ MEMACCESS(0) \ "ld2 {v0.8b, v1.8b}, [%0], #16 \n" \ "uzp2 v3.8b, v1.8b, v1.8b \n" \ "uzp1 v1.8b, v1.8b, v1.8b \n" \ "ins v1.s[1], v3.s[0] \n" // Read 8 UYVY #define READUYVY \ MEMACCESS(0) \ "ld2 {v2.8b, v3.8b}, [%0], #16 \n" \ "orr v0.8b, v3.8b, v3.8b \n" \ "uzp1 v1.8b, v2.8b, v2.8b \n" \ "uzp2 v3.8b, v2.8b, v2.8b \n" \ "ins v1.s[1], v3.s[0] \n" #define YUVTORGB_SETUP \ "ld1r {v24.8h}, [%[kUVBiasBGR]], #2 \n" \ "ld1r {v25.8h}, [%[kUVBiasBGR]], #2 \n" \ "ld1r {v26.8h}, [%[kUVBiasBGR]] \n" \ "ld1r {v31.4s}, [%[kYToRgb]] \n" \ "ld2 {v27.8h, v28.8h}, [%[kUVToRB]] \n" \ "ld2 {v29.8h, v30.8h}, [%[kUVToG]] \n" #define YUVTORGB(vR, vG, vB) \ "uxtl v0.8h, v0.8b \n" /* Extract Y */ \ "shll v2.8h, v1.8b, #8 \n" /* Replicate UV */ \ "ushll2 v3.4s, v0.8h, #0 \n" /* Y */ \ "ushll v0.4s, v0.4h, #0 \n" \ "mul v3.4s, v3.4s, v31.4s \n" \ "mul v0.4s, v0.4s, v31.4s \n" \ "sqshrun v0.4h, v0.4s, #16 \n" \ "sqshrun2 v0.8h, v3.4s, #16 \n" /* Y */ \ "uaddw v1.8h, v2.8h, v1.8b \n" /* Replicate UV */ \ "mov v2.d[0], v1.d[1] \n" /* Extract V */ \ "uxtl v2.8h, v2.8b \n" \ "uxtl v1.8h, v1.8b \n" /* Extract U */ \ "mul v3.8h, v1.8h, v27.8h \n" \ "mul v5.8h, v1.8h, v29.8h \n" \ "mul v6.8h, v2.8h, v30.8h \n" \ "mul v7.8h, v2.8h, v28.8h \n" \ "sqadd v6.8h, v6.8h, v5.8h \n" \ "sqadd " #vB \ ".8h, v24.8h, v0.8h \n" /* B */ \ "sqadd " #vG \ ".8h, v25.8h, v0.8h \n" /* G */ \ "sqadd " #vR \ ".8h, v26.8h, v0.8h \n" /* R */ \ "sqadd " #vB ".8h, " #vB \ ".8h, v3.8h \n" /* B */ \ "sqsub " #vG ".8h, " #vG \ ".8h, v6.8h \n" /* G */ \ "sqadd " #vR ".8h, " #vR \ ".8h, v7.8h \n" /* R */ \ "sqshrun " #vB ".8b, " #vB \ ".8h, #6 \n" /* B */ \ "sqshrun " #vG ".8b, " #vG \ ".8h, #6 \n" /* G */ \ "sqshrun " #vR ".8b, " #vR ".8h, #6 \n" /* R */ void I444ToARGBRow_NEON(const uint8* src_y, const uint8* src_u, const uint8* src_v, uint8* dst_argb, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "movi v23.8b, #255 \n" /* A */ "1: \n" READYUV444 YUVTORGB(v22, v21, v20) "subs %w4, %w4, #8 \n" MEMACCESS(3) "st4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%3], #32 \n" "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_u), // %1 "+r"(src_v), // %2 "+r"(dst_argb), // %3 "+r"(width) // %4 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } void I422ToARGBRow_NEON(const uint8* src_y, const uint8* src_u, const uint8* src_v, uint8* dst_argb, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "movi v23.8b, #255 \n" /* A */ "1: \n" READYUV422 YUVTORGB(v22, v21, v20) "subs %w4, %w4, #8 \n" MEMACCESS(3) "st4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%3], #32 \n" "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_u), // %1 "+r"(src_v), // %2 "+r"(dst_argb), // %3 "+r"(width) // %4 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } void I422AlphaToARGBRow_NEON(const uint8* src_y, const uint8* src_u, const uint8* src_v, const uint8* src_a, uint8* dst_argb, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "1: \n" READYUV422 YUVTORGB(v22, v21, v20) MEMACCESS(3) "ld1 {v23.8b}, [%3], #8 \n" "subs %w5, %w5, #8 \n" MEMACCESS(4) "st4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%4], #32 \n" "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_u), // %1 "+r"(src_v), // %2 "+r"(src_a), // %3 "+r"(dst_argb), // %4 "+r"(width) // %5 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } void I422ToRGBARow_NEON(const uint8* src_y, const uint8* src_u, const uint8* src_v, uint8* dst_rgba, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "movi v20.8b, #255 \n" /* A */ "1: \n" READYUV422 YUVTORGB(v23, v22, v21) "subs %w4, %w4, #8 \n" MEMACCESS(3) "st4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%3], #32 \n" "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_u), // %1 "+r"(src_v), // %2 "+r"(dst_rgba), // %3 "+r"(width) // %4 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } void I422ToRGB24Row_NEON(const uint8* src_y, const uint8* src_u, const uint8* src_v, uint8* dst_rgb24, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "1: \n" READYUV422 YUVTORGB(v22, v21, v20) "subs %w4, %w4, #8 \n" MEMACCESS(3) "st3 {v20.8b,v21.8b,v22.8b}, [%3], #24 \n" "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_u), // %1 "+r"(src_v), // %2 "+r"(dst_rgb24), // %3 "+r"(width) // %4 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } #define ARGBTORGB565 \ "shll v0.8h, v22.8b, #8 \n" /* R */ \ "shll v21.8h, v21.8b, #8 \n" /* G */ \ "shll v20.8h, v20.8b, #8 \n" /* B */ \ "sri v0.8h, v21.8h, #5 \n" /* RG */ \ "sri v0.8h, v20.8h, #11 \n" /* RGB */ void I422ToRGB565Row_NEON(const uint8* src_y, const uint8* src_u, const uint8* src_v, uint8* dst_rgb565, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "1: \n" READYUV422 YUVTORGB(v22, v21, v20) "subs %w4, %w4, #8 \n" ARGBTORGB565 MEMACCESS(3) "st1 {v0.8h}, [%3], #16 \n" // store 8 pixels RGB565. "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_u), // %1 "+r"(src_v), // %2 "+r"(dst_rgb565), // %3 "+r"(width) // %4 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } #define ARGBTOARGB1555 \ "shll v0.8h, v23.8b, #8 \n" /* A */ \ "shll v22.8h, v22.8b, #8 \n" /* R */ \ "shll v21.8h, v21.8b, #8 \n" /* G */ \ "shll v20.8h, v20.8b, #8 \n" /* B */ \ "sri v0.8h, v22.8h, #1 \n" /* AR */ \ "sri v0.8h, v21.8h, #6 \n" /* ARG */ \ "sri v0.8h, v20.8h, #11 \n" /* ARGB */ void I422ToARGB1555Row_NEON(const uint8* src_y, const uint8* src_u, const uint8* src_v, uint8* dst_argb1555, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "movi v23.8b, #255 \n" "1: \n" READYUV422 YUVTORGB(v22, v21, v20) "subs %w4, %w4, #8 \n" ARGBTOARGB1555 MEMACCESS(3) "st1 {v0.8h}, [%3], #16 \n" // store 8 pixels RGB565. "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_u), // %1 "+r"(src_v), // %2 "+r"(dst_argb1555), // %3 "+r"(width) // %4 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } #define ARGBTOARGB4444 \ /* Input v20.8b<=B, v21.8b<=G, v22.8b<=R, v23.8b<=A, v4.8b<=0x0f */ \ "ushr v20.8b, v20.8b, #4 \n" /* B */ \ "bic v21.8b, v21.8b, v4.8b \n" /* G */ \ "ushr v22.8b, v22.8b, #4 \n" /* R */ \ "bic v23.8b, v23.8b, v4.8b \n" /* A */ \ "orr v0.8b, v20.8b, v21.8b \n" /* BG */ \ "orr v1.8b, v22.8b, v23.8b \n" /* RA */ \ "zip1 v0.16b, v0.16b, v1.16b \n" /* BGRA */ void I422ToARGB4444Row_NEON(const uint8* src_y, const uint8* src_u, const uint8* src_v, uint8* dst_argb4444, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "movi v4.16b, #0x0f \n" // bits to clear with vbic. "1: \n" READYUV422 YUVTORGB(v22, v21, v20) "subs %w4, %w4, #8 \n" "movi v23.8b, #255 \n" ARGBTOARGB4444 MEMACCESS(3) "st1 {v0.8h}, [%3], #16 \n" // store 8 pixels ARGB4444. "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_u), // %1 "+r"(src_v), // %2 "+r"(dst_argb4444), // %3 "+r"(width) // %4 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } void I400ToARGBRow_NEON(const uint8* src_y, uint8* dst_argb, int width) { asm volatile ( YUVTORGB_SETUP "movi v23.8b, #255 \n" "1: \n" READYUV400 YUVTORGB(v22, v21, v20) "subs %w2, %w2, #8 \n" MEMACCESS(1) "st4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%1], #32 \n" "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : [kUVToRB]"r"(&kYuvI601Constants.kUVToRB), [kUVToG]"r"(&kYuvI601Constants.kUVToG), [kUVBiasBGR]"r"(&kYuvI601Constants.kUVBiasBGR), [kYToRgb]"r"(&kYuvI601Constants.kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } void J400ToARGBRow_NEON(const uint8* src_y, uint8* dst_argb, int width) { asm volatile ( "movi v23.8b, #255 \n" "1: \n" MEMACCESS(0) "ld1 {v20.8b}, [%0], #8 \n" "orr v21.8b, v20.8b, v20.8b \n" "orr v22.8b, v20.8b, v20.8b \n" "subs %w2, %w2, #8 \n" MEMACCESS(1) "st4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%1], #32 \n" "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : : "cc", "memory", "v20", "v21", "v22", "v23" ); } void NV12ToARGBRow_NEON(const uint8* src_y, const uint8* src_uv, uint8* dst_argb, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "movi v23.8b, #255 \n" "1: \n" READNV12 YUVTORGB(v22, v21, v20) "subs %w3, %w3, #8 \n" MEMACCESS(2) "st4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%2], #32 \n" "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_uv), // %1 "+r"(dst_argb), // %2 "+r"(width) // %3 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } void NV21ToARGBRow_NEON(const uint8* src_y, const uint8* src_vu, uint8* dst_argb, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "movi v23.8b, #255 \n" "1: \n" READNV21 YUVTORGB(v22, v21, v20) "subs %w3, %w3, #8 \n" MEMACCESS(2) "st4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%2], #32 \n" "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_vu), // %1 "+r"(dst_argb), // %2 "+r"(width) // %3 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } void NV12ToRGB565Row_NEON(const uint8* src_y, const uint8* src_uv, uint8* dst_rgb565, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "1: \n" READNV12 YUVTORGB(v22, v21, v20) "subs %w3, %w3, #8 \n" ARGBTORGB565 MEMACCESS(2) "st1 {v0.8h}, [%2], 16 \n" // store 8 pixels RGB565. "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_uv), // %1 "+r"(dst_rgb565), // %2 "+r"(width) // %3 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } void YUY2ToARGBRow_NEON(const uint8* src_yuy2, uint8* dst_argb, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "movi v23.8b, #255 \n" "1: \n" READYUY2 YUVTORGB(v22, v21, v20) "subs %w2, %w2, #8 \n" MEMACCESS(1) "st4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%1], #32 \n" "b.gt 1b \n" : "+r"(src_yuy2), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } void UYVYToARGBRow_NEON(const uint8* src_uyvy, uint8* dst_argb, const struct YuvConstants* yuvconstants, int width) { asm volatile ( YUVTORGB_SETUP "movi v23.8b, #255 \n" "1: \n" READUYVY YUVTORGB(v22, v21, v20) "subs %w2, %w2, #8 \n" MEMACCESS(1) "st4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%1], 32 \n" "b.gt 1b \n" : "+r"(src_uyvy), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : [kUVToRB]"r"(&yuvconstants->kUVToRB), [kUVToG]"r"(&yuvconstants->kUVToG), [kUVBiasBGR]"r"(&yuvconstants->kUVBiasBGR), [kYToRgb]"r"(&yuvconstants->kYToRgb) : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30" ); } // Reads 16 pairs of UV and write even values to dst_u and odd to dst_v. void SplitUVRow_NEON(const uint8* src_uv, uint8* dst_u, uint8* dst_v, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld2 {v0.16b,v1.16b}, [%0], #32 \n" // load 16 pairs of UV "subs %w3, %w3, #16 \n" // 16 processed per loop MEMACCESS(1) "st1 {v0.16b}, [%1], #16 \n" // store U MEMACCESS(2) "st1 {v1.16b}, [%2], #16 \n" // store V "b.gt 1b \n" : "+r"(src_uv), // %0 "+r"(dst_u), // %1 "+r"(dst_v), // %2 "+r"(width) // %3 // Output registers : // Input registers : "cc", "memory", "v0", "v1" // Clobber List ); } // Reads 16 U's and V's and writes out 16 pairs of UV. void MergeUVRow_NEON(const uint8* src_u, const uint8* src_v, uint8* dst_uv, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load U MEMACCESS(1) "ld1 {v1.16b}, [%1], #16 \n" // load V "subs %w3, %w3, #16 \n" // 16 processed per loop MEMACCESS(2) "st2 {v0.16b,v1.16b}, [%2], #32 \n" // store 16 pairs of UV "b.gt 1b \n" : "+r"(src_u), // %0 "+r"(src_v), // %1 "+r"(dst_uv), // %2 "+r"(width) // %3 // Output registers : // Input registers : "cc", "memory", "v0", "v1" // Clobber List ); } // Copy multiple of 32. vld4.8 allow unaligned and is fastest on a15. void CopyRow_NEON(const uint8* src, uint8* dst, int count) { asm volatile ( "1: \n" MEMACCESS(0) "ld1 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 32 "subs %w2, %w2, #32 \n" // 32 processed per loop MEMACCESS(1) "st1 {v0.8b,v1.8b,v2.8b,v3.8b}, [%1], #32 \n" // store 32 "b.gt 1b \n" : "+r"(src), // %0 "+r"(dst), // %1 "+r"(count) // %2 // Output registers : // Input registers : "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List ); } // SetRow writes 'count' bytes using an 8 bit value repeated. void SetRow_NEON(uint8* dst, uint8 v8, int count) { asm volatile ( "dup v0.16b, %w2 \n" // duplicate 16 bytes "1: \n" "subs %w1, %w1, #16 \n" // 16 bytes per loop MEMACCESS(0) "st1 {v0.16b}, [%0], #16 \n" // store "b.gt 1b \n" : "+r"(dst), // %0 "+r"(count) // %1 : "r"(v8) // %2 : "cc", "memory", "v0" ); } void ARGBSetRow_NEON(uint8* dst, uint32 v32, int count) { asm volatile ( "dup v0.4s, %w2 \n" // duplicate 4 ints "1: \n" "subs %w1, %w1, #4 \n" // 4 ints per loop MEMACCESS(0) "st1 {v0.16b}, [%0], #16 \n" // store "b.gt 1b \n" : "+r"(dst), // %0 "+r"(count) // %1 : "r"(v32) // %2 : "cc", "memory", "v0" ); } void MirrorRow_NEON(const uint8* src, uint8* dst, int width) { asm volatile ( // Start at end of source row. "add %0, %0, %w2, sxtw \n" "sub %0, %0, #16 \n" "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], %3 \n" // src -= 16 "subs %w2, %w2, #16 \n" // 16 pixels per loop. "rev64 v0.16b, v0.16b \n" MEMACCESS(1) "st1 {v0.D}[1], [%1], #8 \n" // dst += 16 MEMACCESS(1) "st1 {v0.D}[0], [%1], #8 \n" "b.gt 1b \n" : "+r"(src), // %0 "+r"(dst), // %1 "+r"(width) // %2 : "r"((ptrdiff_t)-16) // %3 : "cc", "memory", "v0" ); } void MirrorUVRow_NEON(const uint8* src_uv, uint8* dst_u, uint8* dst_v, int width) { asm volatile ( // Start at end of source row. "add %0, %0, %w3, sxtw #1 \n" "sub %0, %0, #16 \n" "1: \n" MEMACCESS(0) "ld2 {v0.8b, v1.8b}, [%0], %4 \n" // src -= 16 "subs %w3, %w3, #8 \n" // 8 pixels per loop. "rev64 v0.8b, v0.8b \n" "rev64 v1.8b, v1.8b \n" MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // dst += 8 MEMACCESS(2) "st1 {v1.8b}, [%2], #8 \n" "b.gt 1b \n" : "+r"(src_uv), // %0 "+r"(dst_u), // %1 "+r"(dst_v), // %2 "+r"(width) // %3 : "r"((ptrdiff_t)-16) // %4 : "cc", "memory", "v0", "v1" ); } void ARGBMirrorRow_NEON(const uint8* src, uint8* dst, int width) { asm volatile ( // Start at end of source row. "add %0, %0, %w2, sxtw #2 \n" "sub %0, %0, #16 \n" "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], %3 \n" // src -= 16 "subs %w2, %w2, #4 \n" // 4 pixels per loop. "rev64 v0.4s, v0.4s \n" MEMACCESS(1) "st1 {v0.D}[1], [%1], #8 \n" // dst += 16 MEMACCESS(1) "st1 {v0.D}[0], [%1], #8 \n" "b.gt 1b \n" : "+r"(src), // %0 "+r"(dst), // %1 "+r"(width) // %2 : "r"((ptrdiff_t)-16) // %3 : "cc", "memory", "v0" ); } void RGB24ToARGBRow_NEON(const uint8* src_rgb24, uint8* dst_argb, int width) { asm volatile ( "movi v4.8b, #255 \n" // Alpha "1: \n" MEMACCESS(0) "ld3 {v1.8b,v2.8b,v3.8b}, [%0], #24 \n" // load 8 pixels of RGB24. "subs %w2, %w2, #8 \n" // 8 processed per loop. MEMACCESS(1) "st4 {v1.8b,v2.8b,v3.8b,v4.8b}, [%1], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_rgb24), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : : "cc", "memory", "v1", "v2", "v3", "v4" // Clobber List ); } void RAWToARGBRow_NEON(const uint8* src_raw, uint8* dst_argb, int width) { asm volatile ( "movi v5.8b, #255 \n" // Alpha "1: \n" MEMACCESS(0) "ld3 {v0.8b,v1.8b,v2.8b}, [%0], #24 \n" // read r g b "subs %w2, %w2, #8 \n" // 8 processed per loop. "orr v3.8b, v1.8b, v1.8b \n" // move g "orr v4.8b, v0.8b, v0.8b \n" // move r MEMACCESS(1) "st4 {v2.8b,v3.8b,v4.8b,v5.8b}, [%1], #32 \n" // store b g r a "b.gt 1b \n" : "+r"(src_raw), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5" // Clobber List ); } void RAWToRGB24Row_NEON(const uint8* src_raw, uint8* dst_rgb24, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld3 {v0.8b,v1.8b,v2.8b}, [%0], #24 \n" // read r g b "subs %w2, %w2, #8 \n" // 8 processed per loop. "orr v3.8b, v1.8b, v1.8b \n" // move g "orr v4.8b, v0.8b, v0.8b \n" // move r MEMACCESS(1) "st3 {v2.8b,v3.8b,v4.8b}, [%1], #24 \n" // store b g r "b.gt 1b \n" : "+r"(src_raw), // %0 "+r"(dst_rgb24), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4" // Clobber List ); } #define RGB565TOARGB \ "shrn v6.8b, v0.8h, #5 \n" /* G xxGGGGGG */ \ "shl v6.8b, v6.8b, #2 \n" /* G GGGGGG00 upper 6 */ \ "ushr v4.8b, v6.8b, #6 \n" /* G 000000GG lower 2 */ \ "orr v1.8b, v4.8b, v6.8b \n" /* G */ \ "xtn v2.8b, v0.8h \n" /* B xxxBBBBB */ \ "ushr v0.8h, v0.8h, #11 \n" /* R 000RRRRR */ \ "xtn2 v2.16b,v0.8h \n" /* R in upper part */ \ "shl v2.16b, v2.16b, #3 \n" /* R,B BBBBB000 upper 5 */ \ "ushr v0.16b, v2.16b, #5 \n" /* R,B 00000BBB lower 3 */ \ "orr v0.16b, v0.16b, v2.16b \n" /* R,B */ \ "dup v2.2D, v0.D[1] \n" /* R */ void RGB565ToARGBRow_NEON(const uint8* src_rgb565, uint8* dst_argb, int width) { asm volatile ( "movi v3.8b, #255 \n" // Alpha "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 8 RGB565 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. RGB565TOARGB MEMACCESS(1) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%1], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_rgb565), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v6" // Clobber List ); } #define ARGB1555TOARGB \ "ushr v2.8h, v0.8h, #10 \n" /* R xxxRRRRR */ \ "shl v2.8h, v2.8h, #3 \n" /* R RRRRR000 upper 5 */ \ "xtn v3.8b, v2.8h \n" /* RRRRR000 AAAAAAAA */ \ \ "sshr v2.8h, v0.8h, #15 \n" /* A AAAAAAAA */ \ "xtn2 v3.16b, v2.8h \n" \ \ "xtn v2.8b, v0.8h \n" /* B xxxBBBBB */ \ "shrn2 v2.16b,v0.8h, #5 \n" /* G xxxGGGGG */ \ \ "ushr v1.16b, v3.16b, #5 \n" /* R,A 00000RRR lower 3 */ \ "shl v0.16b, v2.16b, #3 \n" /* B,G BBBBB000 upper 5 */ \ "ushr v2.16b, v0.16b, #5 \n" /* B,G 00000BBB lower 3 */ \ \ "orr v0.16b, v0.16b, v2.16b \n" /* B,G */ \ "orr v2.16b, v1.16b, v3.16b \n" /* R,A */ \ "dup v1.2D, v0.D[1] \n" \ "dup v3.2D, v2.D[1] \n" // RGB555TOARGB is same as ARGB1555TOARGB but ignores alpha. #define RGB555TOARGB \ "ushr v2.8h, v0.8h, #10 \n" /* R xxxRRRRR */ \ "shl v2.8h, v2.8h, #3 \n" /* R RRRRR000 upper 5 */ \ "xtn v3.8b, v2.8h \n" /* RRRRR000 */ \ \ "xtn v2.8b, v0.8h \n" /* B xxxBBBBB */ \ "shrn2 v2.16b,v0.8h, #5 \n" /* G xxxGGGGG */ \ \ "ushr v1.16b, v3.16b, #5 \n" /* R 00000RRR lower 3 */ \ "shl v0.16b, v2.16b, #3 \n" /* B,G BBBBB000 upper 5 */ \ "ushr v2.16b, v0.16b, #5 \n" /* B,G 00000BBB lower 3 */ \ \ "orr v0.16b, v0.16b, v2.16b \n" /* B,G */ \ "orr v2.16b, v1.16b, v3.16b \n" /* R */ \ "dup v1.2D, v0.D[1] \n" /* G */ void ARGB1555ToARGBRow_NEON(const uint8* src_argb1555, uint8* dst_argb, int width) { asm volatile ( "movi v3.8b, #255 \n" // Alpha "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 8 ARGB1555 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. ARGB1555TOARGB MEMACCESS(1) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%1], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_argb1555), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List ); } #define ARGB4444TOARGB \ "shrn v1.8b, v0.8h, #8 \n" /* v1(l) AR */ \ "xtn2 v1.16b, v0.8h \n" /* v1(h) GB */ \ "shl v2.16b, v1.16b, #4 \n" /* B,R BBBB0000 */ \ "ushr v3.16b, v1.16b, #4 \n" /* G,A 0000GGGG */ \ "ushr v0.16b, v2.16b, #4 \n" /* B,R 0000BBBB */ \ "shl v1.16b, v3.16b, #4 \n" /* G,A GGGG0000 */ \ "orr v2.16b, v0.16b, v2.16b \n" /* B,R BBBBBBBB */ \ "orr v3.16b, v1.16b, v3.16b \n" /* G,A GGGGGGGG */ \ "dup v0.2D, v2.D[1] \n" \ "dup v1.2D, v3.D[1] \n" void ARGB4444ToARGBRow_NEON(const uint8* src_argb4444, uint8* dst_argb, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 8 ARGB4444 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. ARGB4444TOARGB MEMACCESS(1) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%1], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_argb4444), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4" // Clobber List ); } void ARGBToRGB24Row_NEON(const uint8* src_argb, uint8* dst_rgb24, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld4 {v1.8b,v2.8b,v3.8b,v4.8b}, [%0], #32 \n" // load 8 ARGB pixels "subs %w2, %w2, #8 \n" // 8 processed per loop. MEMACCESS(1) "st3 {v1.8b,v2.8b,v3.8b}, [%1], #24 \n" // store 8 pixels of RGB24. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_rgb24), // %1 "+r"(width) // %2 : : "cc", "memory", "v1", "v2", "v3", "v4" // Clobber List ); } void ARGBToRAWRow_NEON(const uint8* src_argb, uint8* dst_raw, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld4 {v1.8b,v2.8b,v3.8b,v4.8b}, [%0], #32 \n" // load b g r a "subs %w2, %w2, #8 \n" // 8 processed per loop. "orr v4.8b, v2.8b, v2.8b \n" // mov g "orr v5.8b, v1.8b, v1.8b \n" // mov b MEMACCESS(1) "st3 {v3.8b,v4.8b,v5.8b}, [%1], #24 \n" // store r g b "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_raw), // %1 "+r"(width) // %2 : : "cc", "memory", "v1", "v2", "v3", "v4", "v5" // Clobber List ); } void YUY2ToYRow_NEON(const uint8* src_yuy2, uint8* dst_y, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld2 {v0.16b,v1.16b}, [%0], #32 \n" // load 16 pixels of YUY2. "subs %w2, %w2, #16 \n" // 16 processed per loop. MEMACCESS(1) "st1 {v0.16b}, [%1], #16 \n" // store 16 pixels of Y. "b.gt 1b \n" : "+r"(src_yuy2), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1" // Clobber List ); } void UYVYToYRow_NEON(const uint8* src_uyvy, uint8* dst_y, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld2 {v0.16b,v1.16b}, [%0], #32 \n" // load 16 pixels of UYVY. "subs %w2, %w2, #16 \n" // 16 processed per loop. MEMACCESS(1) "st1 {v1.16b}, [%1], #16 \n" // store 16 pixels of Y. "b.gt 1b \n" : "+r"(src_uyvy), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1" // Clobber List ); } void YUY2ToUV422Row_NEON(const uint8* src_yuy2, uint8* dst_u, uint8* dst_v, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 16 YUY2 pixels "subs %w3, %w3, #16 \n" // 16 pixels = 8 UVs. MEMACCESS(1) "st1 {v1.8b}, [%1], #8 \n" // store 8 U. MEMACCESS(2) "st1 {v3.8b}, [%2], #8 \n" // store 8 V. "b.gt 1b \n" : "+r"(src_yuy2), // %0 "+r"(dst_u), // %1 "+r"(dst_v), // %2 "+r"(width) // %3 : : "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List ); } void UYVYToUV422Row_NEON(const uint8* src_uyvy, uint8* dst_u, uint8* dst_v, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 16 UYVY pixels "subs %w3, %w3, #16 \n" // 16 pixels = 8 UVs. MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 U. MEMACCESS(2) "st1 {v2.8b}, [%2], #8 \n" // store 8 V. "b.gt 1b \n" : "+r"(src_uyvy), // %0 "+r"(dst_u), // %1 "+r"(dst_v), // %2 "+r"(width) // %3 : : "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List ); } void YUY2ToUVRow_NEON(const uint8* src_yuy2, int stride_yuy2, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_yuy2b = src_yuy2 + stride_yuy2; asm volatile ( "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 16 pixels "subs %w4, %w4, #16 \n" // 16 pixels = 8 UVs. MEMACCESS(1) "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%1], #32 \n" // load next row "urhadd v1.8b, v1.8b, v5.8b \n" // average rows of U "urhadd v3.8b, v3.8b, v7.8b \n" // average rows of V MEMACCESS(2) "st1 {v1.8b}, [%2], #8 \n" // store 8 U. MEMACCESS(3) "st1 {v3.8b}, [%3], #8 \n" // store 8 V. "b.gt 1b \n" : "+r"(src_yuy2), // %0 "+r"(src_yuy2b), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7" // Clobber List ); } void UYVYToUVRow_NEON(const uint8* src_uyvy, int stride_uyvy, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_uyvyb = src_uyvy + stride_uyvy; asm volatile ( "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 16 pixels "subs %w4, %w4, #16 \n" // 16 pixels = 8 UVs. MEMACCESS(1) "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%1], #32 \n" // load next row "urhadd v0.8b, v0.8b, v4.8b \n" // average rows of U "urhadd v2.8b, v2.8b, v6.8b \n" // average rows of V MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 U. MEMACCESS(3) "st1 {v2.8b}, [%3], #8 \n" // store 8 V. "b.gt 1b \n" : "+r"(src_uyvy), // %0 "+r"(src_uyvyb), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7" // Clobber List ); } // For BGRAToARGB, ABGRToARGB, RGBAToARGB, and ARGBToRGBA. void ARGBShuffleRow_NEON(const uint8* src_argb, uint8* dst_argb, const uint8* shuffler, int width) { asm volatile ( MEMACCESS(3) "ld1 {v2.16b}, [%3] \n" // shuffler "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 4 pixels. "subs %w2, %w2, #4 \n" // 4 processed per loop "tbl v1.16b, {v0.16b}, v2.16b \n" // look up 4 pixels MEMACCESS(1) "st1 {v1.16b}, [%1], #16 \n" // store 4. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : "r"(shuffler) // %3 : "cc", "memory", "v0", "v1", "v2" // Clobber List ); } void I422ToYUY2Row_NEON(const uint8* src_y, const uint8* src_u, const uint8* src_v, uint8* dst_yuy2, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld2 {v0.8b, v1.8b}, [%0], #16 \n" // load 16 Ys "orr v2.8b, v1.8b, v1.8b \n" MEMACCESS(1) "ld1 {v1.8b}, [%1], #8 \n" // load 8 Us MEMACCESS(2) "ld1 {v3.8b}, [%2], #8 \n" // load 8 Vs "subs %w4, %w4, #16 \n" // 16 pixels MEMACCESS(3) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%3], #32 \n" // Store 16 pixels. "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_u), // %1 "+r"(src_v), // %2 "+r"(dst_yuy2), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3" ); } void I422ToUYVYRow_NEON(const uint8* src_y, const uint8* src_u, const uint8* src_v, uint8* dst_uyvy, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld2 {v1.8b,v2.8b}, [%0], #16 \n" // load 16 Ys "orr v3.8b, v2.8b, v2.8b \n" MEMACCESS(1) "ld1 {v0.8b}, [%1], #8 \n" // load 8 Us MEMACCESS(2) "ld1 {v2.8b}, [%2], #8 \n" // load 8 Vs "subs %w4, %w4, #16 \n" // 16 pixels MEMACCESS(3) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%3], #32 \n" // Store 16 pixels. "b.gt 1b \n" : "+r"(src_y), // %0 "+r"(src_u), // %1 "+r"(src_v), // %2 "+r"(dst_uyvy), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3" ); } void ARGBToRGB565Row_NEON(const uint8* src_argb, uint8* dst_rgb565, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%0], #32 \n" // load 8 pixels "subs %w2, %w2, #8 \n" // 8 processed per loop. ARGBTORGB565 MEMACCESS(1) "st1 {v0.16b}, [%1], #16 \n" // store 8 pixels RGB565. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_rgb565), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v20", "v21", "v22", "v23" ); } void ARGBToRGB565DitherRow_NEON(const uint8* src_argb, uint8* dst_rgb, const uint32 dither4, int width) { asm volatile ( "dup v1.4s, %w2 \n" // dither4 "1: \n" MEMACCESS(1) "ld4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%1], #32 \n" // load 8 pixels "subs %w3, %w3, #8 \n" // 8 processed per loop. "uqadd v20.8b, v20.8b, v1.8b \n" "uqadd v21.8b, v21.8b, v1.8b \n" "uqadd v22.8b, v22.8b, v1.8b \n" ARGBTORGB565 MEMACCESS(0) "st1 {v0.16b}, [%0], #16 \n" // store 8 pixels RGB565. "b.gt 1b \n" : "+r"(dst_rgb) // %0 : "r"(src_argb), // %1 "r"(dither4), // %2 "r"(width) // %3 : "cc", "memory", "v0", "v1", "v20", "v21", "v22", "v23" ); } void ARGBToARGB1555Row_NEON(const uint8* src_argb, uint8* dst_argb1555, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%0], #32 \n" // load 8 pixels "subs %w2, %w2, #8 \n" // 8 processed per loop. ARGBTOARGB1555 MEMACCESS(1) "st1 {v0.16b}, [%1], #16 \n" // store 8 pixels ARGB1555. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_argb1555), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v20", "v21", "v22", "v23" ); } void ARGBToARGB4444Row_NEON(const uint8* src_argb, uint8* dst_argb4444, int width) { asm volatile ( "movi v4.16b, #0x0f \n" // bits to clear with vbic. "1: \n" MEMACCESS(0) "ld4 {v20.8b,v21.8b,v22.8b,v23.8b}, [%0], #32 \n" // load 8 pixels "subs %w2, %w2, #8 \n" // 8 processed per loop. ARGBTOARGB4444 MEMACCESS(1) "st1 {v0.16b}, [%1], #16 \n" // store 8 pixels ARGB4444. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_argb4444), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v4", "v20", "v21", "v22", "v23" ); } void ARGBToYRow_NEON(const uint8* src_argb, uint8* dst_y, int width) { asm volatile ( "movi v4.8b, #13 \n" // B * 0.1016 coefficient "movi v5.8b, #65 \n" // G * 0.5078 coefficient "movi v6.8b, #33 \n" // R * 0.2578 coefficient "movi v7.8b, #16 \n" // Add 16 constant "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 ARGB pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. "umull v3.8h, v0.8b, v4.8b \n" // B "umlal v3.8h, v1.8b, v5.8b \n" // G "umlal v3.8h, v2.8b, v6.8b \n" // R "sqrshrun v0.8b, v3.8h, #7 \n" // 16 bit to 8 bit Y "uqadd v0.8b, v0.8b, v7.8b \n" MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels Y. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7" ); } void ARGBExtractAlphaRow_NEON(const uint8* src_argb, uint8* dst_a, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld4 {v0.16b,v1.16b,v2.16b,v3.16b}, [%0], #64 \n" // load row 16 pixels "subs %w2, %w2, #16 \n" // 16 processed per loop MEMACCESS(1) "st1 {v3.16b}, [%1], #16 \n" // store 16 A's. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_a), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List ); } void ARGBToYJRow_NEON(const uint8* src_argb, uint8* dst_y, int width) { asm volatile ( "movi v4.8b, #15 \n" // B * 0.11400 coefficient "movi v5.8b, #75 \n" // G * 0.58700 coefficient "movi v6.8b, #38 \n" // R * 0.29900 coefficient "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 ARGB pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. "umull v3.8h, v0.8b, v4.8b \n" // B "umlal v3.8h, v1.8b, v5.8b \n" // G "umlal v3.8h, v2.8b, v6.8b \n" // R "sqrshrun v0.8b, v3.8h, #7 \n" // 15 bit to 8 bit Y MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels Y. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6" ); } // 8x1 pixels. void ARGBToUV444Row_NEON(const uint8* src_argb, uint8* dst_u, uint8* dst_v, int width) { asm volatile ( "movi v24.8b, #112 \n" // UB / VR 0.875 coefficient "movi v25.8b, #74 \n" // UG -0.5781 coefficient "movi v26.8b, #38 \n" // UR -0.2969 coefficient "movi v27.8b, #18 \n" // VB -0.1406 coefficient "movi v28.8b, #94 \n" // VG -0.7344 coefficient "movi v29.16b,#0x80 \n" // 128.5 "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 ARGB pixels. "subs %w3, %w3, #8 \n" // 8 processed per loop. "umull v4.8h, v0.8b, v24.8b \n" // B "umlsl v4.8h, v1.8b, v25.8b \n" // G "umlsl v4.8h, v2.8b, v26.8b \n" // R "add v4.8h, v4.8h, v29.8h \n" // +128 -> unsigned "umull v3.8h, v2.8b, v24.8b \n" // R "umlsl v3.8h, v1.8b, v28.8b \n" // G "umlsl v3.8h, v0.8b, v27.8b \n" // B "add v3.8h, v3.8h, v29.8h \n" // +128 -> unsigned "uqshrn v0.8b, v4.8h, #8 \n" // 16 bit to 8 bit U "uqshrn v1.8b, v3.8h, #8 \n" // 16 bit to 8 bit V MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels U. MEMACCESS(2) "st1 {v1.8b}, [%2], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_u), // %1 "+r"(dst_v), // %2 "+r"(width) // %3 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v24", "v25", "v26", "v27", "v28", "v29" ); } #define RGBTOUV_SETUP_REG \ "movi v20.8h, #56, lsl #0 \n" /* UB/VR coefficient (0.875) / 2 */ \ "movi v21.8h, #37, lsl #0 \n" /* UG coefficient (-0.5781) / 2 */ \ "movi v22.8h, #19, lsl #0 \n" /* UR coefficient (-0.2969) / 2 */ \ "movi v23.8h, #9, lsl #0 \n" /* VB coefficient (-0.1406) / 2 */ \ "movi v24.8h, #47, lsl #0 \n" /* VG coefficient (-0.7344) / 2 */ \ "movi v25.16b, #0x80 \n" /* 128.5 (0x8080 in 16-bit) */ // 16x2 pixels -> 8x1. width is number of argb pixels. e.g. 16. #define RGBTOUV(QB, QG, QR) \ "mul v3.8h, " #QB \ ",v20.8h \n" /* B */ \ "mul v4.8h, " #QR \ ",v20.8h \n" /* R */ \ "mls v3.8h, " #QG \ ",v21.8h \n" /* G */ \ "mls v4.8h, " #QG \ ",v24.8h \n" /* G */ \ "mls v3.8h, " #QR \ ",v22.8h \n" /* R */ \ "mls v4.8h, " #QB \ ",v23.8h \n" /* B */ \ "add v3.8h, v3.8h, v25.8h \n" /* +128 -> unsigned */ \ "add v4.8h, v4.8h, v25.8h \n" /* +128 -> unsigned */ \ "uqshrn v0.8b, v3.8h, #8 \n" /* 16 bit to 8 bit U */ \ "uqshrn v1.8b, v4.8h, #8 \n" /* 16 bit to 8 bit V */ // TODO(fbarchard): Consider vhadd vertical, then vpaddl horizontal, avoid shr. // TODO(fbarchard): consider ptrdiff_t for all strides. void ARGBToUVRow_NEON(const uint8* src_argb, int src_stride_argb, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_argb_1 = src_argb + src_stride_argb; asm volatile ( RGBTOUV_SETUP_REG "1: \n" MEMACCESS(0) "ld4 {v0.16b,v1.16b,v2.16b,v3.16b}, [%0], #64 \n" // load 16 pixels. "uaddlp v0.8h, v0.16b \n" // B 16 bytes -> 8 shorts. "uaddlp v1.8h, v1.16b \n" // G 16 bytes -> 8 shorts. "uaddlp v2.8h, v2.16b \n" // R 16 bytes -> 8 shorts. MEMACCESS(1) "ld4 {v4.16b,v5.16b,v6.16b,v7.16b}, [%1], #64 \n" // load next 16 "uadalp v0.8h, v4.16b \n" // B 16 bytes -> 8 shorts. "uadalp v1.8h, v5.16b \n" // G 16 bytes -> 8 shorts. "uadalp v2.8h, v6.16b \n" // R 16 bytes -> 8 shorts. "urshr v0.8h, v0.8h, #1 \n" // 2x average "urshr v1.8h, v1.8h, #1 \n" "urshr v2.8h, v2.8h, #1 \n" "subs %w4, %w4, #16 \n" // 32 processed per loop. RGBTOUV(v0.8h, v1.8h, v2.8h) MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 pixels U. MEMACCESS(3) "st1 {v1.8b}, [%3], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(src_argb_1), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25" ); } // TODO(fbarchard): Subsample match C code. void ARGBToUVJRow_NEON(const uint8* src_argb, int src_stride_argb, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_argb_1 = src_argb + src_stride_argb; asm volatile ( "movi v20.8h, #63, lsl #0 \n" // UB/VR coeff (0.500) / 2 "movi v21.8h, #42, lsl #0 \n" // UG coeff (-0.33126) / 2 "movi v22.8h, #21, lsl #0 \n" // UR coeff (-0.16874) / 2 "movi v23.8h, #10, lsl #0 \n" // VB coeff (-0.08131) / 2 "movi v24.8h, #53, lsl #0 \n" // VG coeff (-0.41869) / 2 "movi v25.16b, #0x80 \n" // 128.5 (0x8080 in 16-bit) "1: \n" MEMACCESS(0) "ld4 {v0.16b,v1.16b,v2.16b,v3.16b}, [%0], #64 \n" // load 16 pixels. "uaddlp v0.8h, v0.16b \n" // B 16 bytes -> 8 shorts. "uaddlp v1.8h, v1.16b \n" // G 16 bytes -> 8 shorts. "uaddlp v2.8h, v2.16b \n" // R 16 bytes -> 8 shorts. MEMACCESS(1) "ld4 {v4.16b,v5.16b,v6.16b,v7.16b}, [%1], #64 \n" // load next 16 "uadalp v0.8h, v4.16b \n" // B 16 bytes -> 8 shorts. "uadalp v1.8h, v5.16b \n" // G 16 bytes -> 8 shorts. "uadalp v2.8h, v6.16b \n" // R 16 bytes -> 8 shorts. "urshr v0.8h, v0.8h, #1 \n" // 2x average "urshr v1.8h, v1.8h, #1 \n" "urshr v2.8h, v2.8h, #1 \n" "subs %w4, %w4, #16 \n" // 32 processed per loop. RGBTOUV(v0.8h, v1.8h, v2.8h) MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 pixels U. MEMACCESS(3) "st1 {v1.8b}, [%3], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(src_argb_1), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25" ); } void BGRAToUVRow_NEON(const uint8* src_bgra, int src_stride_bgra, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_bgra_1 = src_bgra + src_stride_bgra; asm volatile ( RGBTOUV_SETUP_REG "1: \n" MEMACCESS(0) "ld4 {v0.16b,v1.16b,v2.16b,v3.16b}, [%0], #64 \n" // load 16 pixels. "uaddlp v0.8h, v3.16b \n" // B 16 bytes -> 8 shorts. "uaddlp v3.8h, v2.16b \n" // G 16 bytes -> 8 shorts. "uaddlp v2.8h, v1.16b \n" // R 16 bytes -> 8 shorts. MEMACCESS(1) "ld4 {v4.16b,v5.16b,v6.16b,v7.16b}, [%1], #64 \n" // load 16 more "uadalp v0.8h, v7.16b \n" // B 16 bytes -> 8 shorts. "uadalp v3.8h, v6.16b \n" // G 16 bytes -> 8 shorts. "uadalp v2.8h, v5.16b \n" // R 16 bytes -> 8 shorts. "urshr v0.8h, v0.8h, #1 \n" // 2x average "urshr v1.8h, v3.8h, #1 \n" "urshr v2.8h, v2.8h, #1 \n" "subs %w4, %w4, #16 \n" // 32 processed per loop. RGBTOUV(v0.8h, v1.8h, v2.8h) MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 pixels U. MEMACCESS(3) "st1 {v1.8b}, [%3], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_bgra), // %0 "+r"(src_bgra_1), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25" ); } void ABGRToUVRow_NEON(const uint8* src_abgr, int src_stride_abgr, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_abgr_1 = src_abgr + src_stride_abgr; asm volatile ( RGBTOUV_SETUP_REG "1: \n" MEMACCESS(0) "ld4 {v0.16b,v1.16b,v2.16b,v3.16b}, [%0], #64 \n" // load 16 pixels. "uaddlp v3.8h, v2.16b \n" // B 16 bytes -> 8 shorts. "uaddlp v2.8h, v1.16b \n" // G 16 bytes -> 8 shorts. "uaddlp v1.8h, v0.16b \n" // R 16 bytes -> 8 shorts. MEMACCESS(1) "ld4 {v4.16b,v5.16b,v6.16b,v7.16b}, [%1], #64 \n" // load 16 more. "uadalp v3.8h, v6.16b \n" // B 16 bytes -> 8 shorts. "uadalp v2.8h, v5.16b \n" // G 16 bytes -> 8 shorts. "uadalp v1.8h, v4.16b \n" // R 16 bytes -> 8 shorts. "urshr v0.8h, v3.8h, #1 \n" // 2x average "urshr v2.8h, v2.8h, #1 \n" "urshr v1.8h, v1.8h, #1 \n" "subs %w4, %w4, #16 \n" // 32 processed per loop. RGBTOUV(v0.8h, v2.8h, v1.8h) MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 pixels U. MEMACCESS(3) "st1 {v1.8b}, [%3], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_abgr), // %0 "+r"(src_abgr_1), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25" ); } void RGBAToUVRow_NEON(const uint8* src_rgba, int src_stride_rgba, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_rgba_1 = src_rgba + src_stride_rgba; asm volatile ( RGBTOUV_SETUP_REG "1: \n" MEMACCESS(0) "ld4 {v0.16b,v1.16b,v2.16b,v3.16b}, [%0], #64 \n" // load 16 pixels. "uaddlp v0.8h, v1.16b \n" // B 16 bytes -> 8 shorts. "uaddlp v1.8h, v2.16b \n" // G 16 bytes -> 8 shorts. "uaddlp v2.8h, v3.16b \n" // R 16 bytes -> 8 shorts. MEMACCESS(1) "ld4 {v4.16b,v5.16b,v6.16b,v7.16b}, [%1], #64 \n" // load 16 more. "uadalp v0.8h, v5.16b \n" // B 16 bytes -> 8 shorts. "uadalp v1.8h, v6.16b \n" // G 16 bytes -> 8 shorts. "uadalp v2.8h, v7.16b \n" // R 16 bytes -> 8 shorts. "urshr v0.8h, v0.8h, #1 \n" // 2x average "urshr v1.8h, v1.8h, #1 \n" "urshr v2.8h, v2.8h, #1 \n" "subs %w4, %w4, #16 \n" // 32 processed per loop. RGBTOUV(v0.8h, v1.8h, v2.8h) MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 pixels U. MEMACCESS(3) "st1 {v1.8b}, [%3], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_rgba), // %0 "+r"(src_rgba_1), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25" ); } void RGB24ToUVRow_NEON(const uint8* src_rgb24, int src_stride_rgb24, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_rgb24_1 = src_rgb24 + src_stride_rgb24; asm volatile ( RGBTOUV_SETUP_REG "1: \n" MEMACCESS(0) "ld3 {v0.16b,v1.16b,v2.16b}, [%0], #48 \n" // load 16 pixels. "uaddlp v0.8h, v0.16b \n" // B 16 bytes -> 8 shorts. "uaddlp v1.8h, v1.16b \n" // G 16 bytes -> 8 shorts. "uaddlp v2.8h, v2.16b \n" // R 16 bytes -> 8 shorts. MEMACCESS(1) "ld3 {v4.16b,v5.16b,v6.16b}, [%1], #48 \n" // load 16 more. "uadalp v0.8h, v4.16b \n" // B 16 bytes -> 8 shorts. "uadalp v1.8h, v5.16b \n" // G 16 bytes -> 8 shorts. "uadalp v2.8h, v6.16b \n" // R 16 bytes -> 8 shorts. "urshr v0.8h, v0.8h, #1 \n" // 2x average "urshr v1.8h, v1.8h, #1 \n" "urshr v2.8h, v2.8h, #1 \n" "subs %w4, %w4, #16 \n" // 32 processed per loop. RGBTOUV(v0.8h, v1.8h, v2.8h) MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 pixels U. MEMACCESS(3) "st1 {v1.8b}, [%3], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_rgb24), // %0 "+r"(src_rgb24_1), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25" ); } void RAWToUVRow_NEON(const uint8* src_raw, int src_stride_raw, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_raw_1 = src_raw + src_stride_raw; asm volatile ( RGBTOUV_SETUP_REG "1: \n" MEMACCESS(0) "ld3 {v0.16b,v1.16b,v2.16b}, [%0], #48 \n" // load 8 RAW pixels. "uaddlp v2.8h, v2.16b \n" // B 16 bytes -> 8 shorts. "uaddlp v1.8h, v1.16b \n" // G 16 bytes -> 8 shorts. "uaddlp v0.8h, v0.16b \n" // R 16 bytes -> 8 shorts. MEMACCESS(1) "ld3 {v4.16b,v5.16b,v6.16b}, [%1], #48 \n" // load 8 more RAW pixels "uadalp v2.8h, v6.16b \n" // B 16 bytes -> 8 shorts. "uadalp v1.8h, v5.16b \n" // G 16 bytes -> 8 shorts. "uadalp v0.8h, v4.16b \n" // R 16 bytes -> 8 shorts. "urshr v2.8h, v2.8h, #1 \n" // 2x average "urshr v1.8h, v1.8h, #1 \n" "urshr v0.8h, v0.8h, #1 \n" "subs %w4, %w4, #16 \n" // 32 processed per loop. RGBTOUV(v2.8h, v1.8h, v0.8h) MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 pixels U. MEMACCESS(3) "st1 {v1.8b}, [%3], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_raw), // %0 "+r"(src_raw_1), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v23", "v24", "v25" ); } // 16x2 pixels -> 8x1. width is number of argb pixels. e.g. 16. void RGB565ToUVRow_NEON(const uint8* src_rgb565, int src_stride_rgb565, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_rgb565_1 = src_rgb565 + src_stride_rgb565; asm volatile ( "movi v22.8h, #56, lsl #0 \n" // UB / VR coeff (0.875) / 2 "movi v23.8h, #37, lsl #0 \n" // UG coeff (-0.5781) / 2 "movi v24.8h, #19, lsl #0 \n" // UR coeff (-0.2969) / 2 "movi v25.8h, #9 , lsl #0 \n" // VB coeff (-0.1406) / 2 "movi v26.8h, #47, lsl #0 \n" // VG coeff (-0.7344) / 2 "movi v27.16b, #0x80 \n" // 128.5 (0x8080 in 16-bit) "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 8 RGB565 pixels. RGB565TOARGB "uaddlp v16.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uaddlp v18.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uaddlp v20.4h, v2.8b \n" // R 8 bytes -> 4 shorts. MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // next 8 RGB565 pixels. RGB565TOARGB "uaddlp v17.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uaddlp v19.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uaddlp v21.4h, v2.8b \n" // R 8 bytes -> 4 shorts. MEMACCESS(1) "ld1 {v0.16b}, [%1], #16 \n" // load 8 RGB565 pixels. RGB565TOARGB "uadalp v16.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uadalp v18.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uadalp v20.4h, v2.8b \n" // R 8 bytes -> 4 shorts. MEMACCESS(1) "ld1 {v0.16b}, [%1], #16 \n" // next 8 RGB565 pixels. RGB565TOARGB "uadalp v17.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uadalp v19.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uadalp v21.4h, v2.8b \n" // R 8 bytes -> 4 shorts. "ins v16.D[1], v17.D[0] \n" "ins v18.D[1], v19.D[0] \n" "ins v20.D[1], v21.D[0] \n" "urshr v4.8h, v16.8h, #1 \n" // 2x average "urshr v5.8h, v18.8h, #1 \n" "urshr v6.8h, v20.8h, #1 \n" "subs %w4, %w4, #16 \n" // 16 processed per loop. "mul v16.8h, v4.8h, v22.8h \n" // B "mls v16.8h, v5.8h, v23.8h \n" // G "mls v16.8h, v6.8h, v24.8h \n" // R "add v16.8h, v16.8h, v27.8h \n" // +128 -> unsigned "mul v17.8h, v6.8h, v22.8h \n" // R "mls v17.8h, v5.8h, v26.8h \n" // G "mls v17.8h, v4.8h, v25.8h \n" // B "add v17.8h, v17.8h, v27.8h \n" // +128 -> unsigned "uqshrn v0.8b, v16.8h, #8 \n" // 16 bit to 8 bit U "uqshrn v1.8b, v17.8h, #8 \n" // 16 bit to 8 bit V MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 pixels U. MEMACCESS(3) "st1 {v1.8b}, [%3], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_rgb565), // %0 "+r"(src_rgb565_1), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27" ); } // 16x2 pixels -> 8x1. width is number of argb pixels. e.g. 16. void ARGB1555ToUVRow_NEON(const uint8* src_argb1555, int src_stride_argb1555, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_argb1555_1 = src_argb1555 + src_stride_argb1555; asm volatile ( RGBTOUV_SETUP_REG "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 8 ARGB1555 pixels. RGB555TOARGB "uaddlp v16.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uaddlp v17.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uaddlp v18.4h, v2.8b \n" // R 8 bytes -> 4 shorts. MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // next 8 ARGB1555 pixels. RGB555TOARGB "uaddlp v26.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uaddlp v27.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uaddlp v28.4h, v2.8b \n" // R 8 bytes -> 4 shorts. MEMACCESS(1) "ld1 {v0.16b}, [%1], #16 \n" // load 8 ARGB1555 pixels. RGB555TOARGB "uadalp v16.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uadalp v17.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uadalp v18.4h, v2.8b \n" // R 8 bytes -> 4 shorts. MEMACCESS(1) "ld1 {v0.16b}, [%1], #16 \n" // next 8 ARGB1555 pixels. RGB555TOARGB "uadalp v26.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uadalp v27.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uadalp v28.4h, v2.8b \n" // R 8 bytes -> 4 shorts. "ins v16.D[1], v26.D[0] \n" "ins v17.D[1], v27.D[0] \n" "ins v18.D[1], v28.D[0] \n" "urshr v4.8h, v16.8h, #1 \n" // 2x average "urshr v5.8h, v17.8h, #1 \n" "urshr v6.8h, v18.8h, #1 \n" "subs %w4, %w4, #16 \n" // 16 processed per loop. "mul v2.8h, v4.8h, v20.8h \n" // B "mls v2.8h, v5.8h, v21.8h \n" // G "mls v2.8h, v6.8h, v22.8h \n" // R "add v2.8h, v2.8h, v25.8h \n" // +128 -> unsigned "mul v3.8h, v6.8h, v20.8h \n" // R "mls v3.8h, v5.8h, v24.8h \n" // G "mls v3.8h, v4.8h, v23.8h \n" // B "add v3.8h, v3.8h, v25.8h \n" // +128 -> unsigned "uqshrn v0.8b, v2.8h, #8 \n" // 16 bit to 8 bit U "uqshrn v1.8b, v3.8h, #8 \n" // 16 bit to 8 bit V MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 pixels U. MEMACCESS(3) "st1 {v1.8b}, [%3], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_argb1555), // %0 "+r"(src_argb1555_1), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28" ); } // 16x2 pixels -> 8x1. width is number of argb pixels. e.g. 16. void ARGB4444ToUVRow_NEON(const uint8* src_argb4444, int src_stride_argb4444, uint8* dst_u, uint8* dst_v, int width) { const uint8* src_argb4444_1 = src_argb4444 + src_stride_argb4444; asm volatile ( RGBTOUV_SETUP_REG "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 8 ARGB4444 pixels. ARGB4444TOARGB "uaddlp v16.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uaddlp v17.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uaddlp v18.4h, v2.8b \n" // R 8 bytes -> 4 shorts. MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // next 8 ARGB4444 pixels. ARGB4444TOARGB "uaddlp v26.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uaddlp v27.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uaddlp v28.4h, v2.8b \n" // R 8 bytes -> 4 shorts. MEMACCESS(1) "ld1 {v0.16b}, [%1], #16 \n" // load 8 ARGB4444 pixels. ARGB4444TOARGB "uadalp v16.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uadalp v17.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uadalp v18.4h, v2.8b \n" // R 8 bytes -> 4 shorts. MEMACCESS(1) "ld1 {v0.16b}, [%1], #16 \n" // next 8 ARGB4444 pixels. ARGB4444TOARGB "uadalp v26.4h, v0.8b \n" // B 8 bytes -> 4 shorts. "uadalp v27.4h, v1.8b \n" // G 8 bytes -> 4 shorts. "uadalp v28.4h, v2.8b \n" // R 8 bytes -> 4 shorts. "ins v16.D[1], v26.D[0] \n" "ins v17.D[1], v27.D[0] \n" "ins v18.D[1], v28.D[0] \n" "urshr v4.8h, v16.8h, #1 \n" // 2x average "urshr v5.8h, v17.8h, #1 \n" "urshr v6.8h, v18.8h, #1 \n" "subs %w4, %w4, #16 \n" // 16 processed per loop. "mul v2.8h, v4.8h, v20.8h \n" // B "mls v2.8h, v5.8h, v21.8h \n" // G "mls v2.8h, v6.8h, v22.8h \n" // R "add v2.8h, v2.8h, v25.8h \n" // +128 -> unsigned "mul v3.8h, v6.8h, v20.8h \n" // R "mls v3.8h, v5.8h, v24.8h \n" // G "mls v3.8h, v4.8h, v23.8h \n" // B "add v3.8h, v3.8h, v25.8h \n" // +128 -> unsigned "uqshrn v0.8b, v2.8h, #8 \n" // 16 bit to 8 bit U "uqshrn v1.8b, v3.8h, #8 \n" // 16 bit to 8 bit V MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 pixels U. MEMACCESS(3) "st1 {v1.8b}, [%3], #8 \n" // store 8 pixels V. "b.gt 1b \n" : "+r"(src_argb4444), // %0 "+r"(src_argb4444_1), // %1 "+r"(dst_u), // %2 "+r"(dst_v), // %3 "+r"(width) // %4 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28" ); } void RGB565ToYRow_NEON(const uint8* src_rgb565, uint8* dst_y, int width) { asm volatile ( "movi v24.8b, #13 \n" // B * 0.1016 coefficient "movi v25.8b, #65 \n" // G * 0.5078 coefficient "movi v26.8b, #33 \n" // R * 0.2578 coefficient "movi v27.8b, #16 \n" // Add 16 constant "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 8 RGB565 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. RGB565TOARGB "umull v3.8h, v0.8b, v24.8b \n" // B "umlal v3.8h, v1.8b, v25.8b \n" // G "umlal v3.8h, v2.8b, v26.8b \n" // R "sqrshrun v0.8b, v3.8h, #7 \n" // 16 bit to 8 bit Y "uqadd v0.8b, v0.8b, v27.8b \n" MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels Y. "b.gt 1b \n" : "+r"(src_rgb565), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v6", "v24", "v25", "v26", "v27" ); } void ARGB1555ToYRow_NEON(const uint8* src_argb1555, uint8* dst_y, int width) { asm volatile ( "movi v4.8b, #13 \n" // B * 0.1016 coefficient "movi v5.8b, #65 \n" // G * 0.5078 coefficient "movi v6.8b, #33 \n" // R * 0.2578 coefficient "movi v7.8b, #16 \n" // Add 16 constant "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 8 ARGB1555 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. ARGB1555TOARGB "umull v3.8h, v0.8b, v4.8b \n" // B "umlal v3.8h, v1.8b, v5.8b \n" // G "umlal v3.8h, v2.8b, v6.8b \n" // R "sqrshrun v0.8b, v3.8h, #7 \n" // 16 bit to 8 bit Y "uqadd v0.8b, v0.8b, v7.8b \n" MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels Y. "b.gt 1b \n" : "+r"(src_argb1555), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7" ); } void ARGB4444ToYRow_NEON(const uint8* src_argb4444, uint8* dst_y, int width) { asm volatile ( "movi v24.8b, #13 \n" // B * 0.1016 coefficient "movi v25.8b, #65 \n" // G * 0.5078 coefficient "movi v26.8b, #33 \n" // R * 0.2578 coefficient "movi v27.8b, #16 \n" // Add 16 constant "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 8 ARGB4444 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. ARGB4444TOARGB "umull v3.8h, v0.8b, v24.8b \n" // B "umlal v3.8h, v1.8b, v25.8b \n" // G "umlal v3.8h, v2.8b, v26.8b \n" // R "sqrshrun v0.8b, v3.8h, #7 \n" // 16 bit to 8 bit Y "uqadd v0.8b, v0.8b, v27.8b \n" MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels Y. "b.gt 1b \n" : "+r"(src_argb4444), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v24", "v25", "v26", "v27" ); } void BGRAToYRow_NEON(const uint8* src_bgra, uint8* dst_y, int width) { asm volatile ( "movi v4.8b, #33 \n" // R * 0.2578 coefficient "movi v5.8b, #65 \n" // G * 0.5078 coefficient "movi v6.8b, #13 \n" // B * 0.1016 coefficient "movi v7.8b, #16 \n" // Add 16 constant "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. "umull v16.8h, v1.8b, v4.8b \n" // R "umlal v16.8h, v2.8b, v5.8b \n" // G "umlal v16.8h, v3.8b, v6.8b \n" // B "sqrshrun v0.8b, v16.8h, #7 \n" // 16 bit to 8 bit Y "uqadd v0.8b, v0.8b, v7.8b \n" MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels Y. "b.gt 1b \n" : "+r"(src_bgra), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16" ); } void ABGRToYRow_NEON(const uint8* src_abgr, uint8* dst_y, int width) { asm volatile ( "movi v4.8b, #33 \n" // R * 0.2578 coefficient "movi v5.8b, #65 \n" // G * 0.5078 coefficient "movi v6.8b, #13 \n" // B * 0.1016 coefficient "movi v7.8b, #16 \n" // Add 16 constant "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. "umull v16.8h, v0.8b, v4.8b \n" // R "umlal v16.8h, v1.8b, v5.8b \n" // G "umlal v16.8h, v2.8b, v6.8b \n" // B "sqrshrun v0.8b, v16.8h, #7 \n" // 16 bit to 8 bit Y "uqadd v0.8b, v0.8b, v7.8b \n" MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels Y. "b.gt 1b \n" : "+r"(src_abgr), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16" ); } void RGBAToYRow_NEON(const uint8* src_rgba, uint8* dst_y, int width) { asm volatile ( "movi v4.8b, #13 \n" // B * 0.1016 coefficient "movi v5.8b, #65 \n" // G * 0.5078 coefficient "movi v6.8b, #33 \n" // R * 0.2578 coefficient "movi v7.8b, #16 \n" // Add 16 constant "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. "umull v16.8h, v1.8b, v4.8b \n" // B "umlal v16.8h, v2.8b, v5.8b \n" // G "umlal v16.8h, v3.8b, v6.8b \n" // R "sqrshrun v0.8b, v16.8h, #7 \n" // 16 bit to 8 bit Y "uqadd v0.8b, v0.8b, v7.8b \n" MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels Y. "b.gt 1b \n" : "+r"(src_rgba), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16" ); } void RGB24ToYRow_NEON(const uint8* src_rgb24, uint8* dst_y, int width) { asm volatile ( "movi v4.8b, #13 \n" // B * 0.1016 coefficient "movi v5.8b, #65 \n" // G * 0.5078 coefficient "movi v6.8b, #33 \n" // R * 0.2578 coefficient "movi v7.8b, #16 \n" // Add 16 constant "1: \n" MEMACCESS(0) "ld3 {v0.8b,v1.8b,v2.8b}, [%0], #24 \n" // load 8 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. "umull v16.8h, v0.8b, v4.8b \n" // B "umlal v16.8h, v1.8b, v5.8b \n" // G "umlal v16.8h, v2.8b, v6.8b \n" // R "sqrshrun v0.8b, v16.8h, #7 \n" // 16 bit to 8 bit Y "uqadd v0.8b, v0.8b, v7.8b \n" MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels Y. "b.gt 1b \n" : "+r"(src_rgb24), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16" ); } void RAWToYRow_NEON(const uint8* src_raw, uint8* dst_y, int width) { asm volatile ( "movi v4.8b, #33 \n" // R * 0.2578 coefficient "movi v5.8b, #65 \n" // G * 0.5078 coefficient "movi v6.8b, #13 \n" // B * 0.1016 coefficient "movi v7.8b, #16 \n" // Add 16 constant "1: \n" MEMACCESS(0) "ld3 {v0.8b,v1.8b,v2.8b}, [%0], #24 \n" // load 8 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. "umull v16.8h, v0.8b, v4.8b \n" // B "umlal v16.8h, v1.8b, v5.8b \n" // G "umlal v16.8h, v2.8b, v6.8b \n" // R "sqrshrun v0.8b, v16.8h, #7 \n" // 16 bit to 8 bit Y "uqadd v0.8b, v0.8b, v7.8b \n" MEMACCESS(1) "st1 {v0.8b}, [%1], #8 \n" // store 8 pixels Y. "b.gt 1b \n" : "+r"(src_raw), // %0 "+r"(dst_y), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16" ); } // Bilinear filter 16x2 -> 16x1 void InterpolateRow_NEON(uint8* dst_ptr, const uint8* src_ptr, ptrdiff_t src_stride, int dst_width, int source_y_fraction) { int y1_fraction = source_y_fraction; int y0_fraction = 256 - y1_fraction; const uint8* src_ptr1 = src_ptr + src_stride; asm volatile ( "cmp %w4, #0 \n" "b.eq 100f \n" "cmp %w4, #128 \n" "b.eq 50f \n" "dup v5.16b, %w4 \n" "dup v4.16b, %w5 \n" // General purpose row blend. "1: \n" MEMACCESS(1) "ld1 {v0.16b}, [%1], #16 \n" MEMACCESS(2) "ld1 {v1.16b}, [%2], #16 \n" "subs %w3, %w3, #16 \n" "umull v2.8h, v0.8b, v4.8b \n" "umull2 v3.8h, v0.16b, v4.16b \n" "umlal v2.8h, v1.8b, v5.8b \n" "umlal2 v3.8h, v1.16b, v5.16b \n" "rshrn v0.8b, v2.8h, #8 \n" "rshrn2 v0.16b, v3.8h, #8 \n" MEMACCESS(0) "st1 {v0.16b}, [%0], #16 \n" "b.gt 1b \n" "b 99f \n" // Blend 50 / 50. "50: \n" MEMACCESS(1) "ld1 {v0.16b}, [%1], #16 \n" MEMACCESS(2) "ld1 {v1.16b}, [%2], #16 \n" "subs %w3, %w3, #16 \n" "urhadd v0.16b, v0.16b, v1.16b \n" MEMACCESS(0) "st1 {v0.16b}, [%0], #16 \n" "b.gt 50b \n" "b 99f \n" // Blend 100 / 0 - Copy row unchanged. "100: \n" MEMACCESS(1) "ld1 {v0.16b}, [%1], #16 \n" "subs %w3, %w3, #16 \n" MEMACCESS(0) "st1 {v0.16b}, [%0], #16 \n" "b.gt 100b \n" "99: \n" : "+r"(dst_ptr), // %0 "+r"(src_ptr), // %1 "+r"(src_ptr1), // %2 "+r"(dst_width), // %3 "+r"(y1_fraction), // %4 "+r"(y0_fraction) // %5 : : "cc", "memory", "v0", "v1", "v3", "v4", "v5" ); } // dr * (256 - sa) / 256 + sr = dr - dr * sa / 256 + sr void ARGBBlendRow_NEON(const uint8* src_argb0, const uint8* src_argb1, uint8* dst_argb, int width) { asm volatile ( "subs %w3, %w3, #8 \n" "b.lt 89f \n" // Blend 8 pixels. "8: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 ARGB0 pixels MEMACCESS(1) "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%1], #32 \n" // load 8 ARGB1 pixels "subs %w3, %w3, #8 \n" // 8 processed per loop. "umull v16.8h, v4.8b, v3.8b \n" // db * a "umull v17.8h, v5.8b, v3.8b \n" // dg * a "umull v18.8h, v6.8b, v3.8b \n" // dr * a "uqrshrn v16.8b, v16.8h, #8 \n" // db >>= 8 "uqrshrn v17.8b, v17.8h, #8 \n" // dg >>= 8 "uqrshrn v18.8b, v18.8h, #8 \n" // dr >>= 8 "uqsub v4.8b, v4.8b, v16.8b \n" // db - (db * a / 256) "uqsub v5.8b, v5.8b, v17.8b \n" // dg - (dg * a / 256) "uqsub v6.8b, v6.8b, v18.8b \n" // dr - (dr * a / 256) "uqadd v0.8b, v0.8b, v4.8b \n" // + sb "uqadd v1.8b, v1.8b, v5.8b \n" // + sg "uqadd v2.8b, v2.8b, v6.8b \n" // + sr "movi v3.8b, #255 \n" // a = 255 MEMACCESS(2) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%2], #32 \n" // store 8 ARGB pixels "b.ge 8b \n" "89: \n" "adds %w3, %w3, #8-1 \n" "b.lt 99f \n" // Blend 1 pixels. "1: \n" MEMACCESS(0) "ld4 {v0.b,v1.b,v2.b,v3.b}[0], [%0], #4 \n" // load 1 pixel ARGB0. MEMACCESS(1) "ld4 {v4.b,v5.b,v6.b,v7.b}[0], [%1], #4 \n" // load 1 pixel ARGB1. "subs %w3, %w3, #1 \n" // 1 processed per loop. "umull v16.8h, v4.8b, v3.8b \n" // db * a "umull v17.8h, v5.8b, v3.8b \n" // dg * a "umull v18.8h, v6.8b, v3.8b \n" // dr * a "uqrshrn v16.8b, v16.8h, #8 \n" // db >>= 8 "uqrshrn v17.8b, v17.8h, #8 \n" // dg >>= 8 "uqrshrn v18.8b, v18.8h, #8 \n" // dr >>= 8 "uqsub v4.8b, v4.8b, v16.8b \n" // db - (db * a / 256) "uqsub v5.8b, v5.8b, v17.8b \n" // dg - (dg * a / 256) "uqsub v6.8b, v6.8b, v18.8b \n" // dr - (dr * a / 256) "uqadd v0.8b, v0.8b, v4.8b \n" // + sb "uqadd v1.8b, v1.8b, v5.8b \n" // + sg "uqadd v2.8b, v2.8b, v6.8b \n" // + sr "movi v3.8b, #255 \n" // a = 255 MEMACCESS(2) "st4 {v0.b,v1.b,v2.b,v3.b}[0], [%2], #4 \n" // store 1 pixel. "b.ge 1b \n" "99: \n" : "+r"(src_argb0), // %0 "+r"(src_argb1), // %1 "+r"(dst_argb), // %2 "+r"(width) // %3 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16", "v17", "v18" ); } // Attenuate 8 pixels at a time. void ARGBAttenuateRow_NEON(const uint8* src_argb, uint8* dst_argb, int width) { asm volatile ( // Attenuate 8 pixels. "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 ARGB pixels "subs %w2, %w2, #8 \n" // 8 processed per loop. "umull v4.8h, v0.8b, v3.8b \n" // b * a "umull v5.8h, v1.8b, v3.8b \n" // g * a "umull v6.8h, v2.8b, v3.8b \n" // r * a "uqrshrn v0.8b, v4.8h, #8 \n" // b >>= 8 "uqrshrn v1.8b, v5.8h, #8 \n" // g >>= 8 "uqrshrn v2.8b, v6.8h, #8 \n" // r >>= 8 MEMACCESS(1) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%1], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6" ); } // Quantize 8 ARGB pixels (32 bytes). // dst = (dst * scale >> 16) * interval_size + interval_offset; void ARGBQuantizeRow_NEON(uint8* dst_argb, int scale, int interval_size, int interval_offset, int width) { asm volatile ( "dup v4.8h, %w2 \n" "ushr v4.8h, v4.8h, #1 \n" // scale >>= 1 "dup v5.8h, %w3 \n" // interval multiply. "dup v6.8h, %w4 \n" // interval add // 8 pixel loop. "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0] \n" // load 8 pixels of ARGB. "subs %w1, %w1, #8 \n" // 8 processed per loop. "uxtl v0.8h, v0.8b \n" // b (0 .. 255) "uxtl v1.8h, v1.8b \n" "uxtl v2.8h, v2.8b \n" "sqdmulh v0.8h, v0.8h, v4.8h \n" // b * scale "sqdmulh v1.8h, v1.8h, v4.8h \n" // g "sqdmulh v2.8h, v2.8h, v4.8h \n" // r "mul v0.8h, v0.8h, v5.8h \n" // b * interval_size "mul v1.8h, v1.8h, v5.8h \n" // g "mul v2.8h, v2.8h, v5.8h \n" // r "add v0.8h, v0.8h, v6.8h \n" // b + interval_offset "add v1.8h, v1.8h, v6.8h \n" // g "add v2.8h, v2.8h, v6.8h \n" // r "uqxtn v0.8b, v0.8h \n" "uqxtn v1.8b, v1.8h \n" "uqxtn v2.8b, v2.8h \n" MEMACCESS(0) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(dst_argb), // %0 "+r"(width) // %1 : "r"(scale), // %2 "r"(interval_size), // %3 "r"(interval_offset) // %4 : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6" ); } // Shade 8 pixels at a time by specified value. // NOTE vqrdmulh.s16 q10, q10, d0[0] must use a scaler register from 0 to 8. // Rounding in vqrdmulh does +1 to high if high bit of low s16 is set. void ARGBShadeRow_NEON(const uint8* src_argb, uint8* dst_argb, int width, uint32 value) { asm volatile ( "dup v0.4s, %w3 \n" // duplicate scale value. "zip1 v0.8b, v0.8b, v0.8b \n" // v0.8b aarrggbb. "ushr v0.8h, v0.8h, #1 \n" // scale / 2. // 8 pixel loop. "1: \n" MEMACCESS(0) "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%0], #32 \n" // load 8 ARGB pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. "uxtl v4.8h, v4.8b \n" // b (0 .. 255) "uxtl v5.8h, v5.8b \n" "uxtl v6.8h, v6.8b \n" "uxtl v7.8h, v7.8b \n" "sqrdmulh v4.8h, v4.8h, v0.h[0] \n" // b * scale * 2 "sqrdmulh v5.8h, v5.8h, v0.h[1] \n" // g "sqrdmulh v6.8h, v6.8h, v0.h[2] \n" // r "sqrdmulh v7.8h, v7.8h, v0.h[3] \n" // a "uqxtn v4.8b, v4.8h \n" "uqxtn v5.8b, v5.8h \n" "uqxtn v6.8b, v6.8h \n" "uqxtn v7.8b, v7.8h \n" MEMACCESS(1) "st4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%1], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : "r"(value) // %3 : "cc", "memory", "v0", "v4", "v5", "v6", "v7" ); } // Convert 8 ARGB pixels (64 bytes) to 8 Gray ARGB pixels // Similar to ARGBToYJ but stores ARGB. // C code is (15 * b + 75 * g + 38 * r + 64) >> 7; void ARGBGrayRow_NEON(const uint8* src_argb, uint8* dst_argb, int width) { asm volatile ( "movi v24.8b, #15 \n" // B * 0.11400 coefficient "movi v25.8b, #75 \n" // G * 0.58700 coefficient "movi v26.8b, #38 \n" // R * 0.29900 coefficient "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 ARGB pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. "umull v4.8h, v0.8b, v24.8b \n" // B "umlal v4.8h, v1.8b, v25.8b \n" // G "umlal v4.8h, v2.8b, v26.8b \n" // R "sqrshrun v0.8b, v4.8h, #7 \n" // 15 bit to 8 bit B "orr v1.8b, v0.8b, v0.8b \n" // G "orr v2.8b, v0.8b, v0.8b \n" // R MEMACCESS(1) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%1], #32 \n" // store 8 pixels. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v24", "v25", "v26" ); } // Convert 8 ARGB pixels (32 bytes) to 8 Sepia ARGB pixels. // b = (r * 35 + g * 68 + b * 17) >> 7 // g = (r * 45 + g * 88 + b * 22) >> 7 // r = (r * 50 + g * 98 + b * 24) >> 7 void ARGBSepiaRow_NEON(uint8* dst_argb, int width) { asm volatile ( "movi v20.8b, #17 \n" // BB coefficient "movi v21.8b, #68 \n" // BG coefficient "movi v22.8b, #35 \n" // BR coefficient "movi v24.8b, #22 \n" // GB coefficient "movi v25.8b, #88 \n" // GG coefficient "movi v26.8b, #45 \n" // GR coefficient "movi v28.8b, #24 \n" // BB coefficient "movi v29.8b, #98 \n" // BG coefficient "movi v30.8b, #50 \n" // BR coefficient "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0] \n" // load 8 ARGB pixels. "subs %w1, %w1, #8 \n" // 8 processed per loop. "umull v4.8h, v0.8b, v20.8b \n" // B to Sepia B "umlal v4.8h, v1.8b, v21.8b \n" // G "umlal v4.8h, v2.8b, v22.8b \n" // R "umull v5.8h, v0.8b, v24.8b \n" // B to Sepia G "umlal v5.8h, v1.8b, v25.8b \n" // G "umlal v5.8h, v2.8b, v26.8b \n" // R "umull v6.8h, v0.8b, v28.8b \n" // B to Sepia R "umlal v6.8h, v1.8b, v29.8b \n" // G "umlal v6.8h, v2.8b, v30.8b \n" // R "uqshrn v0.8b, v4.8h, #7 \n" // 16 bit to 8 bit B "uqshrn v1.8b, v5.8h, #7 \n" // 16 bit to 8 bit G "uqshrn v2.8b, v6.8h, #7 \n" // 16 bit to 8 bit R MEMACCESS(0) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // store 8 pixels. "b.gt 1b \n" : "+r"(dst_argb), // %0 "+r"(width) // %1 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20", "v21", "v22", "v24", "v25", "v26", "v28", "v29", "v30" ); } // Tranform 8 ARGB pixels (32 bytes) with color matrix. // TODO(fbarchard): Was same as Sepia except matrix is provided. This function // needs to saturate. Consider doing a non-saturating version. void ARGBColorMatrixRow_NEON(const uint8* src_argb, uint8* dst_argb, const int8* matrix_argb, int width) { asm volatile ( MEMACCESS(3) "ld1 {v2.16b}, [%3] \n" // load 3 ARGB vectors. "sxtl v0.8h, v2.8b \n" // B,G coefficients s16. "sxtl2 v1.8h, v2.16b \n" // R,A coefficients s16. "1: \n" MEMACCESS(0) "ld4 {v16.8b,v17.8b,v18.8b,v19.8b}, [%0], #32 \n" // load 8 pixels. "subs %w2, %w2, #8 \n" // 8 processed per loop. "uxtl v16.8h, v16.8b \n" // b (0 .. 255) 16 bit "uxtl v17.8h, v17.8b \n" // g "uxtl v18.8h, v18.8b \n" // r "uxtl v19.8h, v19.8b \n" // a "mul v22.8h, v16.8h, v0.h[0] \n" // B = B * Matrix B "mul v23.8h, v16.8h, v0.h[4] \n" // G = B * Matrix G "mul v24.8h, v16.8h, v1.h[0] \n" // R = B * Matrix R "mul v25.8h, v16.8h, v1.h[4] \n" // A = B * Matrix A "mul v4.8h, v17.8h, v0.h[1] \n" // B += G * Matrix B "mul v5.8h, v17.8h, v0.h[5] \n" // G += G * Matrix G "mul v6.8h, v17.8h, v1.h[1] \n" // R += G * Matrix R "mul v7.8h, v17.8h, v1.h[5] \n" // A += G * Matrix A "sqadd v22.8h, v22.8h, v4.8h \n" // Accumulate B "sqadd v23.8h, v23.8h, v5.8h \n" // Accumulate G "sqadd v24.8h, v24.8h, v6.8h \n" // Accumulate R "sqadd v25.8h, v25.8h, v7.8h \n" // Accumulate A "mul v4.8h, v18.8h, v0.h[2] \n" // B += R * Matrix B "mul v5.8h, v18.8h, v0.h[6] \n" // G += R * Matrix G "mul v6.8h, v18.8h, v1.h[2] \n" // R += R * Matrix R "mul v7.8h, v18.8h, v1.h[6] \n" // A += R * Matrix A "sqadd v22.8h, v22.8h, v4.8h \n" // Accumulate B "sqadd v23.8h, v23.8h, v5.8h \n" // Accumulate G "sqadd v24.8h, v24.8h, v6.8h \n" // Accumulate R "sqadd v25.8h, v25.8h, v7.8h \n" // Accumulate A "mul v4.8h, v19.8h, v0.h[3] \n" // B += A * Matrix B "mul v5.8h, v19.8h, v0.h[7] \n" // G += A * Matrix G "mul v6.8h, v19.8h, v1.h[3] \n" // R += A * Matrix R "mul v7.8h, v19.8h, v1.h[7] \n" // A += A * Matrix A "sqadd v22.8h, v22.8h, v4.8h \n" // Accumulate B "sqadd v23.8h, v23.8h, v5.8h \n" // Accumulate G "sqadd v24.8h, v24.8h, v6.8h \n" // Accumulate R "sqadd v25.8h, v25.8h, v7.8h \n" // Accumulate A "sqshrun v16.8b, v22.8h, #6 \n" // 16 bit to 8 bit B "sqshrun v17.8b, v23.8h, #6 \n" // 16 bit to 8 bit G "sqshrun v18.8b, v24.8h, #6 \n" // 16 bit to 8 bit R "sqshrun v19.8b, v25.8h, #6 \n" // 16 bit to 8 bit A MEMACCESS(1) "st4 {v16.8b,v17.8b,v18.8b,v19.8b}, [%1], #32 \n" // store 8 pixels. "b.gt 1b \n" : "+r"(src_argb), // %0 "+r"(dst_argb), // %1 "+r"(width) // %2 : "r"(matrix_argb) // %3 : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16", "v17", "v18", "v19", "v22", "v23", "v24", "v25" ); } // TODO(fbarchard): fix vqshrun in ARGBMultiplyRow_NEON and reenable. // Multiply 2 rows of ARGB pixels together, 8 pixels at a time. void ARGBMultiplyRow_NEON(const uint8* src_argb0, const uint8* src_argb1, uint8* dst_argb, int width) { asm volatile ( // 8 pixel loop. "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 ARGB pixels. MEMACCESS(1) "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%1], #32 \n" // load 8 more pixels. "subs %w3, %w3, #8 \n" // 8 processed per loop. "umull v0.8h, v0.8b, v4.8b \n" // multiply B "umull v1.8h, v1.8b, v5.8b \n" // multiply G "umull v2.8h, v2.8b, v6.8b \n" // multiply R "umull v3.8h, v3.8b, v7.8b \n" // multiply A "rshrn v0.8b, v0.8h, #8 \n" // 16 bit to 8 bit B "rshrn v1.8b, v1.8h, #8 \n" // 16 bit to 8 bit G "rshrn v2.8b, v2.8h, #8 \n" // 16 bit to 8 bit R "rshrn v3.8b, v3.8h, #8 \n" // 16 bit to 8 bit A MEMACCESS(2) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%2], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_argb0), // %0 "+r"(src_argb1), // %1 "+r"(dst_argb), // %2 "+r"(width) // %3 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7" ); } // Add 2 rows of ARGB pixels together, 8 pixels at a time. void ARGBAddRow_NEON(const uint8* src_argb0, const uint8* src_argb1, uint8* dst_argb, int width) { asm volatile ( // 8 pixel loop. "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 ARGB pixels. MEMACCESS(1) "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%1], #32 \n" // load 8 more pixels. "subs %w3, %w3, #8 \n" // 8 processed per loop. "uqadd v0.8b, v0.8b, v4.8b \n" "uqadd v1.8b, v1.8b, v5.8b \n" "uqadd v2.8b, v2.8b, v6.8b \n" "uqadd v3.8b, v3.8b, v7.8b \n" MEMACCESS(2) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%2], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_argb0), // %0 "+r"(src_argb1), // %1 "+r"(dst_argb), // %2 "+r"(width) // %3 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7" ); } // Subtract 2 rows of ARGB pixels, 8 pixels at a time. void ARGBSubtractRow_NEON(const uint8* src_argb0, const uint8* src_argb1, uint8* dst_argb, int width) { asm volatile ( // 8 pixel loop. "1: \n" MEMACCESS(0) "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // load 8 ARGB pixels. MEMACCESS(1) "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%1], #32 \n" // load 8 more pixels. "subs %w3, %w3, #8 \n" // 8 processed per loop. "uqsub v0.8b, v0.8b, v4.8b \n" "uqsub v1.8b, v1.8b, v5.8b \n" "uqsub v2.8b, v2.8b, v6.8b \n" "uqsub v3.8b, v3.8b, v7.8b \n" MEMACCESS(2) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%2], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_argb0), // %0 "+r"(src_argb1), // %1 "+r"(dst_argb), // %2 "+r"(width) // %3 : : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7" ); } // Adds Sobel X and Sobel Y and stores Sobel into ARGB. // A = 255 // R = Sobel // G = Sobel // B = Sobel void SobelRow_NEON(const uint8* src_sobelx, const uint8* src_sobely, uint8* dst_argb, int width) { asm volatile ( "movi v3.8b, #255 \n" // alpha // 8 pixel loop. "1: \n" MEMACCESS(0) "ld1 {v0.8b}, [%0], #8 \n" // load 8 sobelx. MEMACCESS(1) "ld1 {v1.8b}, [%1], #8 \n" // load 8 sobely. "subs %w3, %w3, #8 \n" // 8 processed per loop. "uqadd v0.8b, v0.8b, v1.8b \n" // add "orr v1.8b, v0.8b, v0.8b \n" "orr v2.8b, v0.8b, v0.8b \n" MEMACCESS(2) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%2], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_sobelx), // %0 "+r"(src_sobely), // %1 "+r"(dst_argb), // %2 "+r"(width) // %3 : : "cc", "memory", "v0", "v1", "v2", "v3" ); } // Adds Sobel X and Sobel Y and stores Sobel into plane. void SobelToPlaneRow_NEON(const uint8* src_sobelx, const uint8* src_sobely, uint8* dst_y, int width) { asm volatile ( // 16 pixel loop. "1: \n" MEMACCESS(0) "ld1 {v0.16b}, [%0], #16 \n" // load 16 sobelx. MEMACCESS(1) "ld1 {v1.16b}, [%1], #16 \n" // load 16 sobely. "subs %w3, %w3, #16 \n" // 16 processed per loop. "uqadd v0.16b, v0.16b, v1.16b \n" // add MEMACCESS(2) "st1 {v0.16b}, [%2], #16 \n" // store 16 pixels. "b.gt 1b \n" : "+r"(src_sobelx), // %0 "+r"(src_sobely), // %1 "+r"(dst_y), // %2 "+r"(width) // %3 : : "cc", "memory", "v0", "v1" ); } // Mixes Sobel X, Sobel Y and Sobel into ARGB. // A = 255 // R = Sobel X // G = Sobel // B = Sobel Y void SobelXYRow_NEON(const uint8* src_sobelx, const uint8* src_sobely, uint8* dst_argb, int width) { asm volatile ( "movi v3.8b, #255 \n" // alpha // 8 pixel loop. "1: \n" MEMACCESS(0) "ld1 {v2.8b}, [%0], #8 \n" // load 8 sobelx. MEMACCESS(1) "ld1 {v0.8b}, [%1], #8 \n" // load 8 sobely. "subs %w3, %w3, #8 \n" // 8 processed per loop. "uqadd v1.8b, v0.8b, v2.8b \n" // add MEMACCESS(2) "st4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%2], #32 \n" // store 8 ARGB pixels "b.gt 1b \n" : "+r"(src_sobelx), // %0 "+r"(src_sobely), // %1 "+r"(dst_argb), // %2 "+r"(width) // %3 : : "cc", "memory", "v0", "v1", "v2", "v3" ); } // SobelX as a matrix is // -1 0 1 // -2 0 2 // -1 0 1 void SobelXRow_NEON(const uint8* src_y0, const uint8* src_y1, const uint8* src_y2, uint8* dst_sobelx, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld1 {v0.8b}, [%0],%5 \n" // top MEMACCESS(0) "ld1 {v1.8b}, [%0],%6 \n" "usubl v0.8h, v0.8b, v1.8b \n" MEMACCESS(1) "ld1 {v2.8b}, [%1],%5 \n" // center * 2 MEMACCESS(1) "ld1 {v3.8b}, [%1],%6 \n" "usubl v1.8h, v2.8b, v3.8b \n" "add v0.8h, v0.8h, v1.8h \n" "add v0.8h, v0.8h, v1.8h \n" MEMACCESS(2) "ld1 {v2.8b}, [%2],%5 \n" // bottom MEMACCESS(2) "ld1 {v3.8b}, [%2],%6 \n" "subs %w4, %w4, #8 \n" // 8 pixels "usubl v1.8h, v2.8b, v3.8b \n" "add v0.8h, v0.8h, v1.8h \n" "abs v0.8h, v0.8h \n" "uqxtn v0.8b, v0.8h \n" MEMACCESS(3) "st1 {v0.8b}, [%3], #8 \n" // store 8 sobelx "b.gt 1b \n" : "+r"(src_y0), // %0 "+r"(src_y1), // %1 "+r"(src_y2), // %2 "+r"(dst_sobelx), // %3 "+r"(width) // %4 : "r"(2LL), // %5 "r"(6LL) // %6 : "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List ); } // SobelY as a matrix is // -1 -2 -1 // 0 0 0 // 1 2 1 void SobelYRow_NEON(const uint8* src_y0, const uint8* src_y1, uint8* dst_sobely, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld1 {v0.8b}, [%0],%4 \n" // left MEMACCESS(1) "ld1 {v1.8b}, [%1],%4 \n" "usubl v0.8h, v0.8b, v1.8b \n" MEMACCESS(0) "ld1 {v2.8b}, [%0],%4 \n" // center * 2 MEMACCESS(1) "ld1 {v3.8b}, [%1],%4 \n" "usubl v1.8h, v2.8b, v3.8b \n" "add v0.8h, v0.8h, v1.8h \n" "add v0.8h, v0.8h, v1.8h \n" MEMACCESS(0) "ld1 {v2.8b}, [%0],%5 \n" // right MEMACCESS(1) "ld1 {v3.8b}, [%1],%5 \n" "subs %w3, %w3, #8 \n" // 8 pixels "usubl v1.8h, v2.8b, v3.8b \n" "add v0.8h, v0.8h, v1.8h \n" "abs v0.8h, v0.8h \n" "uqxtn v0.8b, v0.8h \n" MEMACCESS(2) "st1 {v0.8b}, [%2], #8 \n" // store 8 sobely "b.gt 1b \n" : "+r"(src_y0), // %0 "+r"(src_y1), // %1 "+r"(dst_sobely), // %2 "+r"(width) // %3 : "r"(1LL), // %4 "r"(6LL) // %5 : "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List ); } // Caveat - rounds float to half float whereas scaling version truncates. void HalfFloat1Row_NEON(const uint16* src, uint16* dst, float, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld1 {v1.16b}, [%0], #16 \n" // load 8 shorts "subs %w2, %w2, #8 \n" // 8 pixels per loop "uxtl v2.4s, v1.4h \n" // 8 int's "uxtl2 v3.4s, v1.8h \n" "scvtf v2.4s, v2.4s \n" // 8 floats "scvtf v3.4s, v3.4s \n" "fcvtn v1.4h, v2.4s \n" // 8 half floats "fcvtn2 v1.8h, v3.4s \n" MEMACCESS(1) "st1 {v1.16b}, [%1], #16 \n" // store 8 shorts "b.gt 1b \n" : "+r"(src), // %0 "+r"(dst), // %1 "+r"(width) // %2 : : "cc", "memory", "v1", "v2", "v3" ); } void HalfFloatRow_NEON(const uint16* src, uint16* dst, float scale, int width) { asm volatile ( "1: \n" MEMACCESS(0) "ld1 {v1.16b}, [%0], #16 \n" // load 8 shorts "subs %w2, %w2, #8 \n" // 8 pixels per loop "uxtl v2.4s, v1.4h \n" // 8 int's "uxtl2 v3.4s, v1.8h \n" "scvtf v2.4s, v2.4s \n" // 8 floats "scvtf v3.4s, v3.4s \n" "fmul v2.4s, v2.4s, %3.s[0] \n" // adjust exponent "fmul v3.4s, v3.4s, %3.s[0] \n" "uqshrn v1.4h, v2.4s, #13 \n" // isolate halffloat "uqshrn2 v1.8h, v3.4s, #13 \n" MEMACCESS(1) "st1 {v1.16b}, [%1], #16 \n" // store 8 shorts "b.gt 1b \n" : "+r"(src), // %0 "+r"(dst), // %1 "+r"(width) // %2 : "w"(scale * 1.9259299444e-34f) // %3 : "cc", "memory", "v1", "v2", "v3" ); } #endif // !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__) #ifdef __cplusplus } // extern "C" } // namespace libyuv #endif