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plus-messenger/TMessagesProj/jni/libyuv/source/row_neon64.cc

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/*
* 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
#if !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__)
// Read 8 Y, 4 U and 4 V from 422
#define READYUV422 \
MEMACCESS(0) \
"vld1.8 {d0}, [%0]! \n" \
MEMACCESS(1) \
"vld1.32 {d2[0]}, [%1]! \n" \
MEMACCESS(2) \
"vld1.32 {d2[1]}, [%2]! \n"
// Read 8 Y, 2 U and 2 V from 422
#define READYUV411 \
MEMACCESS(0) \
"vld1.8 {d0}, [%0]! \n" \
MEMACCESS(1) \
"vld1.16 {d2[0]}, [%1]! \n" \
MEMACCESS(2) \
"vld1.16 {d2[1]}, [%2]! \n" \
"vmov.u8 d3, d2 \n" \
"vzip.u8 d2, d3 \n"
// Read 8 Y, 8 U and 8 V from 444
#define READYUV444 \
MEMACCESS(0) \
"vld1.8 {d0}, [%0]! \n" \
MEMACCESS(1) \
"vld1.8 {d2}, [%1]! \n" \
MEMACCESS(2) \
"vld1.8 {d3}, [%2]! \n" \
"vpaddl.u8 q1, q1 \n" \
"vrshrn.u16 d2, q1, #1 \n"
// Read 8 Y, and set 4 U and 4 V to 128
#define READYUV400 \
MEMACCESS(0) \
"vld1.8 {d0}, [%0]! \n" \
"vmov.u8 d2, #128 \n"
// Read 8 Y and 4 UV from NV12
#define READNV12 \
MEMACCESS(0) \
"vld1.8 {d0}, [%0]! \n" \
MEMACCESS(1) \
"vld1.8 {d2}, [%1]! \n" \
"vmov.u8 d3, d2 \n"/* split odd/even uv apart */\
"vuzp.u8 d2, d3 \n" \
"vtrn.u32 d2, d3 \n"
// Read 8 Y and 4 VU from NV21
#define READNV21 \
MEMACCESS(0) \
"vld1.8 {d0}, [%0]! \n" \
MEMACCESS(1) \
"vld1.8 {d2}, [%1]! \n" \
"vmov.u8 d3, d2 \n"/* split odd/even uv apart */\
"vuzp.u8 d3, d2 \n" \
"vtrn.u32 d2, d3 \n"
// Read 8 YUY2
#define READYUY2 \
MEMACCESS(0) \
"vld2.8 {d0, d2}, [%0]! \n" \
"vmov.u8 d3, d2 \n" \
"vuzp.u8 d2, d3 \n" \
"vtrn.u32 d2, d3 \n"
// Read 8 UYVY
#define READUYVY \
MEMACCESS(0) \
"vld2.8 {d2, d3}, [%0]! \n" \
"vmov.u8 d0, d3 \n" \
"vmov.u8 d3, d2 \n" \
"vuzp.u8 d2, d3 \n" \
"vtrn.u32 d2, d3 \n"
#define YUV422TORGB \
"veor.u8 d2, d26 \n"/*subtract 128 from u and v*/\
"vmull.s8 q8, d2, d24 \n"/* u/v B/R component */\
"vmull.s8 q9, d2, d25 \n"/* u/v G component */\
"vmov.u8 d1, #0 \n"/* split odd/even y apart */\
"vtrn.u8 d0, d1 \n" \
"vsub.s16 q0, q0, q15 \n"/* offset y */\
"vmul.s16 q0, q0, q14 \n" \
"vadd.s16 d18, d19 \n" \
"vqadd.s16 d20, d0, d16 \n" /* B */ \
"vqadd.s16 d21, d1, d16 \n" \
"vqadd.s16 d22, d0, d17 \n" /* R */ \
"vqadd.s16 d23, d1, d17 \n" \
"vqadd.s16 d16, d0, d18 \n" /* G */ \
"vqadd.s16 d17, d1, d18 \n" \
"vqshrun.s16 d0, q10, #6 \n" /* B */ \
"vqshrun.s16 d1, q11, #6 \n" /* G */ \
"vqshrun.s16 d2, q8, #6 \n" /* R */ \
"vmovl.u8 q10, d0 \n"/* set up for reinterleave*/\
"vmovl.u8 q11, d1 \n" \
"vmovl.u8 q8, d2 \n" \
"vtrn.u8 d20, d21 \n" \
"vtrn.u8 d22, d23 \n" \
"vtrn.u8 d16, d17 \n" \
"vmov.u8 d21, d16 \n"
static vec8 kUVToRB = { 127, 127, 127, 127, 102, 102, 102, 102,
0, 0, 0, 0, 0, 0, 0, 0 };
static vec8 kUVToG = { -25, -25, -25, -25, -52, -52, -52, -52,
0, 0, 0, 0, 0, 0, 0, 0 };
#ifdef HAS_I444TOARGBROW_NEON
void I444ToARGBRow_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV444
YUV422TORGB
"subs %4, %4, #8 \n"
"vmov.u8 d23, #255 \n"
MEMACCESS(3)
"vst4.8 {d20, d21, d22, d23}, [%3]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_argb), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I444TOARGBROW_NEON
#ifdef HAS_I422TOARGBROW_NEON
void I422ToARGBRow_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV422
YUV422TORGB
"subs %4, %4, #8 \n"
"vmov.u8 d23, #255 \n"
MEMACCESS(3)
"vst4.8 {d20, d21, d22, d23}, [%3]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_argb), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I422TOARGBROW_NEON
#ifdef HAS_I411TOARGBROW_NEON
void I411ToARGBRow_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV411
YUV422TORGB
"subs %4, %4, #8 \n"
"vmov.u8 d23, #255 \n"
MEMACCESS(3)
"vst4.8 {d20, d21, d22, d23}, [%3]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_argb), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I411TOARGBROW_NEON
#ifdef HAS_I422TOBGRAROW_NEON
void I422ToBGRARow_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_bgra,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV422
YUV422TORGB
"subs %4, %4, #8 \n"
"vswp.u8 d20, d22 \n"
"vmov.u8 d19, #255 \n"
MEMACCESS(3)
"vst4.8 {d19, d20, d21, d22}, [%3]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_bgra), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I422TOBGRAROW_NEON
#ifdef HAS_I422TOABGRROW_NEON
void I422ToABGRRow_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_abgr,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV422
YUV422TORGB
"subs %4, %4, #8 \n"
"vswp.u8 d20, d22 \n"
"vmov.u8 d23, #255 \n"
MEMACCESS(3)
"vst4.8 {d20, d21, d22, d23}, [%3]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_abgr), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I422TOABGRROW_NEON
#ifdef HAS_I422TORGBAROW_NEON
void I422ToRGBARow_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_rgba,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV422
YUV422TORGB
"subs %4, %4, #8 \n"
"vmov.u8 d19, #255 \n"
MEMACCESS(3)
"vst4.8 {d19, d20, d21, d22}, [%3]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_rgba), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I422TORGBAROW_NEON
#ifdef HAS_I422TORGB24ROW_NEON
void I422ToRGB24Row_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_rgb24,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV422
YUV422TORGB
"subs %4, %4, #8 \n"
MEMACCESS(3)
"vst3.8 {d20, d21, d22}, [%3]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_rgb24), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I422TORGB24ROW_NEON
#ifdef HAS_I422TORAWROW_NEON
void I422ToRAWRow_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_raw,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV422
YUV422TORGB
"subs %4, %4, #8 \n"
"vswp.u8 d20, d22 \n"
MEMACCESS(3)
"vst3.8 {d20, d21, d22}, [%3]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_raw), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I422TORAWROW_NEON
#define ARGBTORGB565 \
"vshr.u8 d20, d20, #3 \n" /* B */ \
"vshr.u8 d21, d21, #2 \n" /* G */ \
"vshr.u8 d22, d22, #3 \n" /* R */ \
"vmovl.u8 q8, d20 \n" /* B */ \
"vmovl.u8 q9, d21 \n" /* G */ \
"vmovl.u8 q10, d22 \n" /* R */ \
"vshl.u16 q9, q9, #5 \n" /* G */ \
"vshl.u16 q10, q10, #11 \n" /* R */ \
"vorr q0, q8, q9 \n" /* BG */ \
"vorr q0, q0, q10 \n" /* BGR */
#ifdef HAS_I422TORGB565ROW_NEON
void I422ToRGB565Row_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_rgb565,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV422
YUV422TORGB
"subs %4, %4, #8 \n"
ARGBTORGB565
MEMACCESS(3)
"vst1.8 {q0}, [%3]! \n" // store 8 pixels RGB565.
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_rgb565), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I422TORGB565ROW_NEON
#define ARGBTOARGB1555 \
"vshr.u8 q10, q10, #3 \n" /* B */ \
"vshr.u8 d22, d22, #3 \n" /* R */ \
"vshr.u8 d23, d23, #7 \n" /* A */ \
"vmovl.u8 q8, d20 \n" /* B */ \
"vmovl.u8 q9, d21 \n" /* G */ \
"vmovl.u8 q10, d22 \n" /* R */ \
"vmovl.u8 q11, d23 \n" /* A */ \
"vshl.u16 q9, q9, #5 \n" /* G */ \
"vshl.u16 q10, q10, #10 \n" /* R */ \
"vshl.u16 q11, q11, #15 \n" /* A */ \
"vorr q0, q8, q9 \n" /* BG */ \
"vorr q1, q10, q11 \n" /* RA */ \
"vorr q0, q0, q1 \n" /* BGRA */
#ifdef HAS_I422TOARGB1555ROW_NEON
void I422ToARGB1555Row_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb1555,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV422
YUV422TORGB
"subs %4, %4, #8 \n"
"vmov.u8 d23, #255 \n"
ARGBTOARGB1555
MEMACCESS(3)
"vst1.8 {q0}, [%3]! \n" // store 8 pixels ARGB1555.
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_argb1555), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I422TOARGB1555ROW_NEON
#define ARGBTOARGB4444 \
"vshr.u8 d20, d20, #4 \n" /* B */ \
"vbic.32 d21, d21, d4 \n" /* G */ \
"vshr.u8 d22, d22, #4 \n" /* R */ \
"vbic.32 d23, d23, d4 \n" /* A */ \
"vorr d0, d20, d21 \n" /* BG */ \
"vorr d1, d22, d23 \n" /* RA */ \
"vzip.u8 d0, d1 \n" /* BGRA */
#ifdef HAS_I422TOARGB4444ROW_NEON
void I422ToARGB4444Row_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb4444,
int width) {
asm volatile (
MEMACCESS(5)
"vld1.8 {d24}, [%5] \n"
MEMACCESS(6)
"vld1.8 {d25}, [%6] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
"vmov.u8 d4, #0x0f \n" // bits to clear with vbic.
".p2align 2 \n"
"1: \n"
READYUV422
YUV422TORGB
"subs %4, %4, #8 \n"
"vmov.u8 d23, #255 \n"
ARGBTOARGB4444
MEMACCESS(3)
"vst1.8 {q0}, [%3]! \n" // store 8 pixels ARGB4444.
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_u), // %1
"+r"(src_v), // %2
"+r"(dst_argb4444), // %3
"+r"(width) // %4
: "r"(&kUVToRB), // %5
"r"(&kUVToG) // %6
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_I422TOARGB4444ROW_NEON
#ifdef HAS_YTOARGBROW_NEON
void YToARGBRow_NEON(const uint8* src_y,
uint8* dst_argb,
int width) {
asm volatile (
MEMACCESS(3)
"vld1.8 {d24}, [%3] \n"
MEMACCESS(4)
"vld1.8 {d25}, [%4] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUV400
YUV422TORGB
"subs %2, %2, #8 \n"
"vmov.u8 d23, #255 \n"
MEMACCESS(1)
"vst4.8 {d20, d21, d22, d23}, [%1]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(dst_argb), // %1
"+r"(width) // %2
: "r"(&kUVToRB), // %3
"r"(&kUVToG) // %4
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_YTOARGBROW_NEON
#ifdef HAS_I400TOARGBROW_NEON
void I400ToARGBRow_NEON(const uint8* src_y,
uint8* dst_argb,
int width) {
asm volatile (
".p2align 2 \n"
"vmov.u8 d23, #255 \n"
"1: \n"
MEMACCESS(0)
"vld1.8 {d20}, [%0]! \n"
"vmov d21, d20 \n"
"vmov d22, d20 \n"
"subs %2, %2, #8 \n"
MEMACCESS(1)
"vst4.8 {d20, d21, d22, d23}, [%1]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(dst_argb), // %1
"+r"(width) // %2
:
: "cc", "memory", "d20", "d21", "d22", "d23"
);
}
#endif // HAS_I400TOARGBROW_NEON
#ifdef HAS_NV12TOARGBROW_NEON
void NV12ToARGBRow_NEON(const uint8* src_y,
const uint8* src_uv,
uint8* dst_argb,
int width) {
asm volatile (
MEMACCESS(4)
"vld1.8 {d24}, [%4] \n"
MEMACCESS(5)
"vld1.8 {d25}, [%5] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READNV12
YUV422TORGB
"subs %3, %3, #8 \n"
"vmov.u8 d23, #255 \n"
MEMACCESS(2)
"vst4.8 {d20, d21, d22, d23}, [%2]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_uv), // %1
"+r"(dst_argb), // %2
"+r"(width) // %3
: "r"(&kUVToRB), // %4
"r"(&kUVToG) // %5
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_NV12TOARGBROW_NEON
#ifdef HAS_NV21TOARGBROW_NEON
void NV21ToARGBRow_NEON(const uint8* src_y,
const uint8* src_uv,
uint8* dst_argb,
int width) {
asm volatile (
MEMACCESS(4)
"vld1.8 {d24}, [%4] \n"
MEMACCESS(5)
"vld1.8 {d25}, [%5] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READNV21
YUV422TORGB
"subs %3, %3, #8 \n"
"vmov.u8 d23, #255 \n"
MEMACCESS(2)
"vst4.8 {d20, d21, d22, d23}, [%2]! \n"
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_uv), // %1
"+r"(dst_argb), // %2
"+r"(width) // %3
: "r"(&kUVToRB), // %4
"r"(&kUVToG) // %5
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_NV21TOARGBROW_NEON
#ifdef HAS_NV12TORGB565ROW_NEON
void NV12ToRGB565Row_NEON(const uint8* src_y,
const uint8* src_uv,
uint8* dst_rgb565,
int width) {
asm volatile (
MEMACCESS(4)
"vld1.8 {d24}, [%4] \n"
MEMACCESS(5)
"vld1.8 {d25}, [%5] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READNV12
YUV422TORGB
"subs %3, %3, #8 \n"
ARGBTORGB565
MEMACCESS(2)
"vst1.8 {q0}, [%2]! \n" // store 8 pixels RGB565.
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_uv), // %1
"+r"(dst_rgb565), // %2
"+r"(width) // %3
: "r"(&kUVToRB), // %4
"r"(&kUVToG) // %5
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_NV12TORGB565ROW_NEON
#ifdef HAS_NV21TORGB565ROW_NEON
void NV21ToRGB565Row_NEON(const uint8* src_y,
const uint8* src_uv,
uint8* dst_rgb565,
int width) {
asm volatile (
MEMACCESS(4)
"vld1.8 {d24}, [%4] \n"
MEMACCESS(5)
"vld1.8 {d25}, [%5] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READNV21
YUV422TORGB
"subs %3, %3, #8 \n"
ARGBTORGB565
MEMACCESS(2)
"vst1.8 {q0}, [%2]! \n" // store 8 pixels RGB565.
"bgt 1b \n"
: "+r"(src_y), // %0
"+r"(src_uv), // %1
"+r"(dst_rgb565), // %2
"+r"(width) // %3
: "r"(&kUVToRB), // %4
"r"(&kUVToG) // %5
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_NV21TORGB565ROW_NEON
#ifdef HAS_YUY2TOARGBROW_NEON
void YUY2ToARGBRow_NEON(const uint8* src_yuy2,
uint8* dst_argb,
int width) {
asm volatile (
MEMACCESS(3)
"vld1.8 {d24}, [%3] \n"
MEMACCESS(4)
"vld1.8 {d25}, [%4] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READYUY2
YUV422TORGB
"subs %2, %2, #8 \n"
"vmov.u8 d23, #255 \n"
MEMACCESS(1)
"vst4.8 {d20, d21, d22, d23}, [%1]! \n"
"bgt 1b \n"
: "+r"(src_yuy2), // %0
"+r"(dst_argb), // %1
"+r"(width) // %2
: "r"(&kUVToRB), // %3
"r"(&kUVToG) // %4
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_YUY2TOARGBROW_NEON
#ifdef HAS_UYVYTOARGBROW_NEON
void UYVYToARGBRow_NEON(const uint8* src_uyvy,
uint8* dst_argb,
int width) {
asm volatile (
MEMACCESS(3)
"vld1.8 {d24}, [%3] \n"
MEMACCESS(4)
"vld1.8 {d25}, [%4] \n"
"vmov.u8 d26, #128 \n"
"vmov.u16 q14, #74 \n"
"vmov.u16 q15, #16 \n"
".p2align 2 \n"
"1: \n"
READUYVY
YUV422TORGB
"subs %2, %2, #8 \n"
"vmov.u8 d23, #255 \n"
MEMACCESS(1)
"vst4.8 {d20, d21, d22, d23}, [%1]! \n"
"bgt 1b \n"
: "+r"(src_uyvy), // %0
"+r"(dst_argb), // %1
"+r"(width) // %2
: "r"(&kUVToRB), // %3
"r"(&kUVToG) // %4
: "cc", "memory", "q0", "q1", "q2", "q3",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_UYVYTOARGBROW_NEON
// Reads 16 pairs of UV and write even values to dst_u and odd to dst_v.
#ifdef HAS_SPLITUVROW_NEON
void SplitUVRow_NEON(const uint8* src_uv, uint8* dst_u, uint8* dst_v,
int width) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld2 {v0.16b, v1.16b}, [%0], #32 \n" // load 16 pairs of UV
"subs %3, %3, #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
"bgt 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
);
}
#endif // HAS_SPLITUVROW_NEON
// Reads 16 U's and V's and writes out 16 pairs of UV.
#ifdef HAS_MERGEUVROW_NEON
void MergeUVRow_NEON(const uint8* src_u, const uint8* src_v, uint8* dst_uv,
int width) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld1 {v0.16b}, [%0], #16 \n" // load U
MEMACCESS(1)
"ld1 {v1.16b}, [%1], #16 \n" // load V
"subs %3, %3, #16 \n" // 16 processed per loop
MEMACCESS(2)
"st2 {v0.16b, v1.16b}, [%2], #32 \n" // store 16 pairs of UV
"bgt 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
);
}
#endif // HAS_MERGEUVROW_NEON
// Copy multiple of 32. vld4.8 allow unaligned and is fastest on a15.
#ifdef HAS_COPYROW_NEON
void CopyRow_NEON(const uint8* src, uint8* dst, int count) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld1 {v0.8b-v3.8b}, [%0], #32 \n" // load 32
"subs %2, %2, #32 \n" // 32 processed per loop
MEMACCESS(1)
"st1 {v0.8b-v3.8b}, [%1], #32 \n" // store 32
"bgt 1b \n"
: "+r"(src), // %0
"+r"(dst), // %1
"+r"(count) // %2 // Output registers
: // Input registers
: "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List
);
}
#endif // HAS_COPYROW_NEON
// SetRow8 writes 'count' bytes using a 32 bit value repeated.
#ifdef HAS_SETROW_NEON
void SetRow_NEON(uint8* dst, uint32 v32, int count) {
asm volatile (
"dup v0.4s, %w2 \n" // duplicate 4 ints
"1: \n"
"subs %1, %1, #16 \n" // 16 bytes per loop
MEMACCESS(0)
"st1 {v0.16b}, [%0], #16 \n" // store
"bgt 1b \n"
: "+r"(dst), // %0
"+r"(count) // %1
: "r"(v32) // %2
: "cc", "memory", "v0"
);
}
#endif // HAS_SETROW_NEON
// TODO(fbarchard): Make fully assembler
// SetRow32 writes 'count' words using a 32 bit value repeated.
#ifdef HAS_ARGBSETROWS_NEON
void ARGBSetRows_NEON(uint8* dst, uint32 v32, int width,
int dst_stride, int height) {
for (int y = 0; y < height; ++y) {
SetRow_NEON(dst, v32, width << 2);
dst += dst_stride;
}
}
#endif // HAS_ARGBSETROWS_NEON
#ifdef HAS_MIRRORROW_NEON
void MirrorRow_NEON(const uint8* src, uint8* dst, int width) {
asm volatile (
// Start at end of source row.
"add %0, %0, %2 \n"
"sub %0, %0, #16 \n"
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld1 {v0.16b}, [%0], %3 \n" // src -= 16
"subs %2, %2, #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"
"bgt 1b \n"
: "+r"(src), // %0
"+r"(dst), // %1
"+r"(width) // %2
: "r"((ptrdiff_t)-16) // %3
: "cc", "memory", "v0"
);
}
#endif // HAS_MIRRORROW_NEON
#ifdef HAS_MIRRORUVROW_NEON
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, %3, lsl #1 \n"
"sub %0, %0, #16 \n"
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld2 {v0.8b, v1.8b}, [%0], %4 \n" // src -= 16
"subs %3, %3, #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"
"bgt 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"
);
}
#endif // HAS_MIRRORUVROW_NEON
#ifdef HAS_ARGBMIRRORROW_NEON
void ARGBMirrorRow_NEON(const uint8* src, uint8* dst, int width) {
asm volatile (
// Start at end of source row.
"add %0, %0, %2, lsl #2 \n"
"sub %0, %0, #16 \n"
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld1 {v0.16b}, [%0], %3 \n" // src -= 16
"subs %2, %2, #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"
"bgt 1b \n"
: "+r"(src), // %0
"+r"(dst), // %1
"+r"(width) // %2
: "r"((ptrdiff_t)-16) // %3
: "cc", "memory", "v0"
);
}
#endif // HAS_ARGBMIRRORROW_NEON
#ifdef HAS_RGB24TOARGBROW_NEON
void RGB24ToARGBRow_NEON(const uint8* src_rgb24, uint8* dst_argb, int pix) {
asm volatile (
"movi v4.8b, #255 \n" // Alpha
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld3 {v1.8b-v3.8b}, [%0], #24 \n" // load 8 pixels of RGB24.
"subs %2, %2, #8 \n" // 8 processed per loop.
MEMACCESS(1)
"st4 {v1.8b-v4.8b}, [%1], #32 \n" // store 8 pixels of ARGB.
"bgt 1b \n"
: "+r"(src_rgb24), // %0
"+r"(dst_argb), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v1", "v2", "v3", "v4" // Clobber List
);
}
#endif // HAS_RGB24TOARGBROW_NEON
#ifdef HAS_RAWTOARGBROW_NEON
void RAWToARGBRow_NEON(const uint8* src_raw, uint8* dst_argb, int pix) {
asm volatile (
"movi v5.8b, #255 \n" // Alpha
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld3 {v0.8b-v2.8b}, [%0], #24 \n" // read r g b
"subs %2, %2, #8 \n" // 8 processed per loop.
"mov v3.8b, v1.8b \n" // move g
"mov v4.8b, v0.8b \n" // move r
MEMACCESS(1)
"st4 {v2.8b-v5.8b}, [%1], #32 \n" // store b g r a
"bgt 1b \n"
: "+r"(src_raw), // %0
"+r"(dst_argb), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5" // Clobber List
);
}
#endif // HAS_RAWTOARGBROW_NEON
#define RGB565TOARGB \
"vshrn.u16 d6, q0, #5 \n" /* G xxGGGGGG */ \
"vuzp.u8 d0, d1 \n" /* d0 xxxBBBBB RRRRRxxx */ \
"vshl.u8 d6, d6, #2 \n" /* G GGGGGG00 upper 6 */ \
"vshr.u8 d1, d1, #3 \n" /* R 000RRRRR lower 5 */ \
"vshl.u8 q0, q0, #3 \n" /* B,R BBBBB000 upper 5 */ \
"vshr.u8 q2, q0, #5 \n" /* B,R 00000BBB lower 3 */ \
"vorr.u8 d0, d0, d4 \n" /* B */ \
"vshr.u8 d4, d6, #6 \n" /* G 000000GG lower 2 */ \
"vorr.u8 d2, d1, d5 \n" /* R */ \
"vorr.u8 d1, d4, d6 \n" /* G */
#ifdef HAS_RGB565TOARGBROW_NEON
void RGB565ToARGBRow_NEON(const uint8* src_rgb565, uint8* dst_argb, int pix) {
asm volatile (
"vmov.u8 d3, #255 \n" // Alpha
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // load 8 RGB565 pixels.
"subs %2, %2, #8 \n" // 8 processed per loop.
RGB565TOARGB
MEMACCESS(1)
"vst4.8 {d0, d1, d2, d3}, [%1]! \n" // store 8 pixels of ARGB.
"bgt 1b \n"
: "+r"(src_rgb565), // %0
"+r"(dst_argb), // %1
"+r"(pix) // %2
:
: "cc", "memory", "q0", "q1", "q2", "q3" // Clobber List
);
}
#endif // HAS_RGB565TOARGBROW_NEON
#define ARGB1555TOARGB \
"vshrn.u16 d7, q0, #8 \n" /* A Arrrrrxx */ \
"vshr.u8 d6, d7, #2 \n" /* R xxxRRRRR */ \
"vshrn.u16 d5, q0, #5 \n" /* G xxxGGGGG */ \
"vmovn.u16 d4, q0 \n" /* B xxxBBBBB */ \
"vshr.u8 d7, d7, #7 \n" /* A 0000000A */ \
"vneg.s8 d7, d7 \n" /* A AAAAAAAA upper 8 */ \
"vshl.u8 d6, d6, #3 \n" /* R RRRRR000 upper 5 */ \
"vshr.u8 q1, q3, #5 \n" /* R,A 00000RRR lower 3 */ \
"vshl.u8 q0, q2, #3 \n" /* B,G BBBBB000 upper 5 */ \
"vshr.u8 q2, q0, #5 \n" /* B,G 00000BBB lower 3 */ \
"vorr.u8 q1, q1, q3 \n" /* R,A */ \
"vorr.u8 q0, q0, q2 \n" /* B,G */ \
// RGB555TOARGB is same as ARGB1555TOARGB but ignores alpha.
#define RGB555TOARGB \
"vshrn.u16 d6, q0, #5 \n" /* G xxxGGGGG */ \
"vuzp.u8 d0, d1 \n" /* d0 xxxBBBBB xRRRRRxx */ \
"vshl.u8 d6, d6, #3 \n" /* G GGGGG000 upper 5 */ \
"vshr.u8 d1, d1, #2 \n" /* R 00xRRRRR lower 5 */ \
"vshl.u8 q0, q0, #3 \n" /* B,R BBBBB000 upper 5 */ \
"vshr.u8 q2, q0, #5 \n" /* B,R 00000BBB lower 3 */ \
"vorr.u8 d0, d0, d4 \n" /* B */ \
"vshr.u8 d4, d6, #5 \n" /* G 00000GGG lower 3 */ \
"vorr.u8 d2, d1, d5 \n" /* R */ \
"vorr.u8 d1, d4, d6 \n" /* G */
#ifdef HAS_ARGB1555TOARGBROW_NEON
void ARGB1555ToARGBRow_NEON(const uint8* src_argb1555, uint8* dst_argb,
int pix) {
asm volatile (
"vmov.u8 d3, #255 \n" // Alpha
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // load 8 ARGB1555 pixels.
"subs %2, %2, #8 \n" // 8 processed per loop.
ARGB1555TOARGB
MEMACCESS(1)
"vst4.8 {d0, d1, d2, d3}, [%1]! \n" // store 8 pixels of ARGB.
"bgt 1b \n"
: "+r"(src_argb1555), // %0
"+r"(dst_argb), // %1
"+r"(pix) // %2
:
: "cc", "memory", "q0", "q1", "q2", "q3" // Clobber List
);
}
#endif // HAS_ARGB1555TOARGBROW_NEON
#define ARGB4444TOARGB \
"vuzp.u8 d0, d1 \n" /* d0 BG, d1 RA */ \
"vshl.u8 q2, q0, #4 \n" /* B,R BBBB0000 */ \
"vshr.u8 q1, q0, #4 \n" /* G,A 0000GGGG */ \
"vshr.u8 q0, q2, #4 \n" /* B,R 0000BBBB */ \
"vorr.u8 q0, q0, q2 \n" /* B,R BBBBBBBB */ \
"vshl.u8 q2, q1, #4 \n" /* G,A GGGG0000 */ \
"vorr.u8 q1, q1, q2 \n" /* G,A GGGGGGGG */ \
"vswp.u8 d1, d2 \n" /* B,R,G,A -> B,G,R,A */
#ifdef HAS_ARGB4444TOARGBROW_NEON
void ARGB4444ToARGBRow_NEON(const uint8* src_argb4444, uint8* dst_argb,
int pix) {
asm volatile (
"vmov.u8 d3, #255 \n" // Alpha
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // load 8 ARGB4444 pixels.
"subs %2, %2, #8 \n" // 8 processed per loop.
ARGB4444TOARGB
MEMACCESS(1)
"vst4.8 {d0, d1, d2, d3}, [%1]! \n" // store 8 pixels of ARGB.
"bgt 1b \n"
: "+r"(src_argb4444), // %0
"+r"(dst_argb), // %1
"+r"(pix) // %2
:
: "cc", "memory", "q0", "q1", "q2" // Clobber List
);
}
#endif // HAS_ARGB4444TOARGBROW_NEON
#ifdef HAS_ARGBTORGB24ROW_NEON
void ARGBToRGB24Row_NEON(const uint8* src_argb, uint8* dst_rgb24, int pix) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v1.8b-v4.8b}, [%0], #32 \n" // load 8 pixels of ARGB.
"subs %2, %2, #8 \n" // 8 processed per loop.
MEMACCESS(1)
"st3 {v1.8b-v3.8b}, [%1], #24 \n" // store 8 pixels of RGB24.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_rgb24), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v1", "v2", "v3", "v4" // Clobber List
);
}
#endif // HAS_ARGBTORGB24ROW_NEON
#ifdef HAS_ARGBTORAWROW_NEON
void ARGBToRAWRow_NEON(const uint8* src_argb, uint8* dst_raw, int pix) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v1.8b-v4.8b}, [%0], #32 \n" // load b g r a
"subs %2, %2, #8 \n" // 8 processed per loop.
"mov v4.8b, v2.8b \n" // mov g
"mov v5.8b, v1.8b \n" // mov b
MEMACCESS(1)
"st3 {v3.8b-v5.8b}, [%1], #24 \n" // store r g b
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_raw), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v1", "v2", "v3", "v4", "v5" // Clobber List
);
}
#endif // HAS_ARGBTORAWROW_NEON
#ifdef HAS_YUY2TOYROW_NEON
void YUY2ToYRow_NEON(const uint8* src_yuy2, uint8* dst_y, int pix) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld2 {v0.16b, v1.16b}, [%0], #32 \n" // load 16 pixels of YUY2.
"subs %2, %2, #16 \n" // 16 processed per loop.
MEMACCESS(1)
"st1 {v0.16b}, [%1], #16 \n" // store 16 pixels of Y.
"bgt 1b \n"
: "+r"(src_yuy2), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1" // Clobber List
);
}
#endif // HAS_YUY2TOYROW_NEON
#ifdef HAS_UYVYTOYROW_NEON
void UYVYToYRow_NEON(const uint8* src_uyvy, uint8* dst_y, int pix) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld2 {v0.16b, v1.16b}, [%0], #32 \n" // load 16 pixels of UYVY.
"subs %2, %2, #16 \n" // 16 processed per loop.
MEMACCESS(1)
"st1 {v1.16b}, [%1], #16 \n" // store 16 pixels of Y.
"bgt 1b \n"
: "+r"(src_uyvy), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1" // Clobber List
);
}
#endif // HAS_UYVYTOYROW_NEON
#ifdef HAS_YUY2TOUV422ROW_NEON
void YUY2ToUV422Row_NEON(const uint8* src_yuy2, uint8* dst_u, uint8* dst_v,
int pix) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 16 pixels of YUY2.
"subs %3, %3, #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.
"bgt 1b \n"
: "+r"(src_yuy2), // %0
"+r"(dst_u), // %1
"+r"(dst_v), // %2
"+r"(pix) // %3
:
: "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List
);
}
#endif // HAS_YUY2TOUV422ROW_NEON
#ifdef HAS_UYVYTOUV422ROW_NEON
void UYVYToUV422Row_NEON(const uint8* src_uyvy, uint8* dst_u, uint8* dst_v,
int pix) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 16 pixels of UYVY.
"subs %3, %3, #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.
"bgt 1b \n"
: "+r"(src_uyvy), // %0
"+r"(dst_u), // %1
"+r"(dst_v), // %2
"+r"(pix) // %3
:
: "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List
);
}
#endif // HAS_UYVYTOUV422ROW_NEON
#ifdef HAS_YUY2TOUVROW_NEON
void YUY2ToUVRow_NEON(const uint8* src_yuy2, int stride_yuy2,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %x1, %x0, %w1, sxtw \n" // stride + src_yuy2
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 16 pixels of YUY2.
"subs %4, %4, #16 \n" // 16 pixels = 8 UVs.
MEMACCESS(1)
"ld4 {v4.8b-v7.8b}, [%1], #32 \n" // load next row YUY2.
"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.
"bgt 1b \n"
: "+r"(src_yuy2), // %0
"+r"(stride_yuy2), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7" // Clobber List
);
}
#endif // HAS_YUY2TOUVROW_NEON
#ifdef HAS_UYVYTOUVROW_NEON
void UYVYToUVRow_NEON(const uint8* src_uyvy, int stride_uyvy,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %x1, %x0, %w1, sxtw \n" // stride + src_uyvy
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 16 pixels of UYVY.
"subs %4, %4, #16 \n" // 16 pixels = 8 UVs.
MEMACCESS(1)
"ld4 {v4.8b-v7.8b}, [%1], #32 \n" // load next row UYVY.
"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.
"bgt 1b \n"
: "+r"(src_uyvy), // %0
"+r"(stride_uyvy), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7" // Clobber List
);
}
#endif // HAS_UYVYTOUVROW_NEON
#ifdef HAS_HALFROW_NEON
void HalfRow_NEON(const uint8* src_uv, int src_uv_stride,
uint8* dst_uv, int pix) {
asm volatile (
// change the stride to row 2 pointer
"add %x1, %x0, %w1, sxtw \n"
"1: \n"
MEMACCESS(0)
"ld1 {v0.16b}, [%0], #16 \n" // load row 1 16 pixels.
"subs %3, %3, #16 \n" // 16 processed per loop
MEMACCESS(1)
"ld1 {v1.16b}, [%1], #16 \n" // load row 2 16 pixels.
"urhadd v0.16b, v0.16b, v1.16b \n" // average row 1 and 2
MEMACCESS(2)
"st1 {v0.16b}, [%2], #16 \n"
"bgt 1b \n"
: "+r"(src_uv), // %0
"+r"(src_uv_stride), // %1
"+r"(dst_uv), // %2
"+r"(pix) // %3
:
: "cc", "memory", "v0", "v1" // Clobber List
);
}
#endif // HAS_HALFROW_NEON
// Select 2 channels from ARGB on alternating pixels. e.g. BGBGBGBG
#ifdef HAS_ARGBTOBAYERROW_NEON
void ARGBToBayerRow_NEON(const uint8* src_argb, uint8* dst_bayer,
uint32 selector, int pix) {
asm volatile (
"mov v2.s[0], %w3 \n" // selector
"1: \n"
MEMACCESS(0)
"ld1 {v0.16b, v1.16b}, [%0], 32 \n" // load row 8 pixels.
"subs %2, %2, #8 \n" // 8 processed per loop
"tbl v4.8b, {v0.16b}, v2.8b \n" // look up 4 pixels
"tbl v5.8b, {v1.16b}, v2.8b \n" // look up 4 pixels
"trn1 v4.4s, v4.4s, v5.4s \n" // combine 8 pixels
MEMACCESS(1)
"st1 {v4.8b}, [%1], #8 \n" // store 8.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_bayer), // %1
"+r"(pix) // %2
: "r"(selector) // %3
: "cc", "memory", "v0", "v1", "v2", "v4", "v5" // Clobber List
);
}
#endif // HAS_ARGBTOBAYERROW_NEON
// Select G channels from ARGB. e.g. GGGGGGGG
#ifdef HAS_ARGBTOBAYERGGROW_NEON
void ARGBToBayerGGRow_NEON(const uint8* src_argb, uint8* dst_bayer,
uint32 /*selector*/, int pix) {
asm volatile (
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load row 8 pixels.
"subs %2, %2, #8 \n" // 8 processed per loop
MEMACCESS(1)
"st1 {v1.8b}, [%1], #8 \n" // store 8 G's.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_bayer), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List
);
}
#endif // HAS_ARGBTOBAYERGGROW_NEON
// For BGRAToARGB, ABGRToARGB, RGBAToARGB, and ARGBToRGBA.
#ifdef HAS_ARGBSHUFFLEROW_NEON
void ARGBShuffleRow_NEON(const uint8* src_argb, uint8* dst_argb,
const uint8* shuffler, int pix) {
asm volatile (
MEMACCESS(3)
"ld1 {v2.16b}, [%3] \n" // shuffler
"1: \n"
MEMACCESS(0)
"ld1 {v0.16b}, [%0], #16 \n" // load 4 pixels.
"subs %2, %2, #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.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_argb), // %1
"+r"(pix) // %2
: "r"(shuffler) // %3
: "cc", "memory", "v0", "v1", "v2" // Clobber List
);
}
#endif // HAS_ARGBSHUFFLEROW_NEON
#ifdef HAS_I422TOYUY2ROW_NEON
void I422ToYUY2Row_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_yuy2, int width) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld2 {v0.8b, v1.8b}, [%0], #16 \n" // load 16 Ys
"mov v2.8b, 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 %4, %4, #16 \n" // 16 pixels
MEMACCESS(3)
"st4 {v0.8b-v3.8b}, [%3], #32 \n" // Store 8 YUY2/16 pixels.
"bgt 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"
);
}
#endif // HAS_I422TOYUY2ROW_NEON
#ifdef HAS_I422TOUYVYROW_NEON
void I422ToUYVYRow_NEON(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_uyvy, int width) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld2 {v1.8b, v2.8b}, [%0], #16 \n" // load 16 Ys
"mov v3.8b, 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 %4, %4, #16 \n" // 16 pixels
MEMACCESS(3)
"st4 {v0.8b-v3.8b}, [%3], #32 \n" // Store 8 UYVY/16 pixels.
"bgt 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"
);
}
#endif // HAS_I422TOUYVYROW_NEON
#ifdef HAS_ARGBTORGB565ROW_NEON
void ARGBToRGB565Row_NEON(const uint8* src_argb, uint8* dst_rgb565, int pix) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld4.8 {d20, d21, d22, d23}, [%0]! \n" // load 8 pixels of ARGB.
"subs %2, %2, #8 \n" // 8 processed per loop.
ARGBTORGB565
MEMACCESS(1)
"vst1.8 {q0}, [%1]! \n" // store 8 pixels RGB565.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_rgb565), // %1
"+r"(pix) // %2
:
: "cc", "memory", "q0", "q8", "q9", "q10", "q11"
);
}
#endif // HAS_ARGBTORGB565ROW_NEON
#ifdef HAS_ARGBTOARGB1555ROW_NEON
void ARGBToARGB1555Row_NEON(const uint8* src_argb, uint8* dst_argb1555,
int pix) {
asm volatile (
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld4.8 {d20, d21, d22, d23}, [%0]! \n" // load 8 pixels of ARGB.
"subs %2, %2, #8 \n" // 8 processed per loop.
ARGBTOARGB1555
MEMACCESS(1)
"vst1.8 {q0}, [%1]! \n" // store 8 pixels ARGB1555.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_argb1555), // %1
"+r"(pix) // %2
:
: "cc", "memory", "q0", "q8", "q9", "q10", "q11"
);
}
#endif // HAS_ARGBTOARGB1555ROW_NEON
#ifdef HAS_ARGBTOARGB4444ROW_NEON
void ARGBToARGB4444Row_NEON(const uint8* src_argb, uint8* dst_argb4444,
int pix) {
asm volatile (
"vmov.u8 d4, #0x0f \n" // bits to clear with vbic.
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld4.8 {d20, d21, d22, d23}, [%0]! \n" // load 8 pixels of ARGB.
"subs %2, %2, #8 \n" // 8 processed per loop.
ARGBTOARGB4444
MEMACCESS(1)
"vst1.8 {q0}, [%1]! \n" // store 8 pixels ARGB4444.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_argb4444), // %1
"+r"(pix) // %2
:
: "cc", "memory", "q0", "q8", "q9", "q10", "q11"
);
}
#endif // HAS_ARGBTOARGB4444ROW_NEON
#ifdef HAS_ARGBTOYROW_NEON
void ARGBToYRow_NEON(const uint8* src_argb, uint8* dst_y, int pix) {
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
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 ARGB pixels.
"subs %2, %2, #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.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7"
);
}
#endif // HAS_ARGBTOYROW_NEON
#ifdef HAS_ARGBTOYJROW_NEON
void ARGBToYJRow_NEON(const uint8* src_argb, uint8* dst_y, int pix) {
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
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 ARGB pixels.
"subs %2, %2, #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.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6"
);
}
#endif // HAS_ARGBTOYJROW_NEON
// 8x1 pixels.
#ifdef HAS_ARGBTOUV444ROW_NEON
void ARGBToUV444Row_NEON(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
int pix) {
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
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 ARGB pixels.
"subs %3, %3, #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.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_u), // %1
"+r"(dst_v), // %2
"+r"(pix) // %3
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4",
"v24", "v25", "v26", "v27", "v28", "v29"
);
}
#endif // HAS_ARGBTOUV444ROW_NEON
// 16x1 pixels -> 8x1. pix is number of argb pixels. e.g. 16.
#ifdef HAS_ARGBTOUV422ROW_NEON
void ARGBToUV422Row_NEON(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
int pix) {
asm volatile (
"movi v20.8h, #112 / 2 \n" // UB / VR 0.875 coefficient
"movi v21.8h, #74 / 2 \n" // UG -0.5781 coefficient
"movi v22.8h, #38 / 2 \n" // UR -0.2969 coefficient
"movi v23.8h, #18 / 2 \n" // VB -0.1406 coefficient
"movi v24.8h, #94 / 2 \n" // VG -0.7344 coefficient
"movi v25.16b, #0x80 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.16b-v3.16b}, [%0], #64 \n" // load 16 ARGB 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.
"subs %3, %3, #16 \n" // 16 processed per loop.
"mul v3.8h, v0.8h, v20.8h \n" // B
"mls v3.8h, v1.8h, v21.8h \n" // G
"mls v3.8h, v2.8h, v22.8h \n" // R
"add v3.8h, v3.8h, v25.8h \n" // +128 -> unsigned
"mul v4.8h, v2.8h, v20.8h \n" // R
"mls v4.8h, v1.8h, v24.8h \n" // G
"mls v4.8h, v0.8h, v23.8h \n" // B
"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
MEMACCESS(1)
"st1 {v0.8b}, [%1], #8 \n" // store 8 pixels U.
MEMACCESS(2)
"st1 {v1.8b}, [%2], #8 \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_u), // %1
"+r"(dst_v), // %2
"+r"(pix) // %3
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7",
"v20", "v21", "v22", "v23", "v24", "v25"
);
}
#endif // HAS_ARGBTOUV422ROW_NEON
// 32x1 pixels -> 8x1. pix is number of argb pixels. e.g. 32.
#ifdef HAS_ARGBTOUV411ROW_NEON
void ARGBToUV411Row_NEON(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
int pix) {
asm volatile (
"movi v20.8h, #112 / 2 \n" // UB / VR 0.875 coefficient
"movi v21.8h, #74 / 2 \n" // UG -0.5781 coefficient
"movi v22.8h, #38 / 2 \n" // UR -0.2969 coefficient
"movi v23.8h, #18 / 2 \n" // VB -0.1406 coefficient
"movi v24.8h, #94 / 2 \n" // VG -0.7344 coefficient
"movi v25.16b, #0x80 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.16b-v3.16b}, [%0], #64 \n" // load 16 ARGB 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(0)
"ld4 {v4.16b-v7.16b}, [%0], #64 \n" // load next 16 ARGB pixels.
"uaddlp v4.8h, v4.16b \n" // B 16 bytes -> 8 shorts.
"uaddlp v5.8h, v5.16b \n" // G 16 bytes -> 8 shorts.
"uaddlp v6.8h, v6.16b \n" // R 16 bytes -> 8 shorts.
"addp v0.8h, v0.8h, v4.8h \n" // B 16 shorts -> 8 shorts.
"addp v1.8h, v1.8h, v5.8h \n" // G 16 shorts -> 8 shorts.
"addp v2.8h, v2.8h, v6.8h \n" // R 16 shorts -> 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 %3, %3, #32 \n" // 32 processed per loop.
"mul v3.8h, v0.8h, v20.8h \n" // B
"mls v3.8h, v1.8h, v21.8h \n" // G
"mls v3.8h, v2.8h, v22.8h \n" // R
"add v3.8h, v3.8h, v25.8h \n" // +128 -> unsigned
"mul v4.8h, v2.8h, v20.8h \n" // R
"mls v4.8h, v1.8h, v24.8h \n" // G
"mls v4.8h, v0.8h, v23.8h \n" // B
"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
MEMACCESS(1)
"st1 {v0.8b}, [%1], #8 \n" // store 8 pixels U.
MEMACCESS(2)
"st1 {v1.8b}, [%2], #8 \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_u), // %1
"+r"(dst_v), // %2
"+r"(pix) // %3
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7",
"v20", "v21", "v22", "v23", "v24", "v25"
);
}
#endif // HAS_ARGBTOUV411ROW_NEON
// 16x2 pixels -> 8x1. pix is number of argb pixels. e.g. 16.
#define RGBTOUV(QB, QG, QR) \
"vmul.s16 q8, " #QB ", q10 \n" /* B */ \
"vmls.s16 q8, " #QG ", q11 \n" /* G */ \
"vmls.s16 q8, " #QR ", q12 \n" /* R */ \
"vadd.u16 q8, q8, q15 \n" /* +128 -> unsigned */ \
"vmul.s16 q9, " #QR ", q10 \n" /* R */ \
"vmls.s16 q9, " #QG ", q14 \n" /* G */ \
"vmls.s16 q9, " #QB ", q13 \n" /* B */ \
"vadd.u16 q9, q9, q15 \n" /* +128 -> unsigned */ \
"vqshrn.u16 d0, q8, #8 \n" /* 16 bit to 8 bit U */ \
"vqshrn.u16 d1, q9, #8 \n" /* 16 bit to 8 bit V */
// TODO(fbarchard): Consider vhadd vertical, then vpaddl horizontal, avoid shr.
#ifdef HAS_ARGBTOUVROW_NEON
void ARGBToUVRow_NEON(const uint8* src_argb, int src_stride_argb,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %1, %0, %1 \n" // src_stride + src_argb
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
"vmov.u16 q15, #0x8080 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld4.8 {d0, d2, d4, d6}, [%0]! \n" // load 8 ARGB pixels.
MEMACCESS(0)
"vld4.8 {d1, d3, d5, d7}, [%0]! \n" // load next 8 ARGB pixels.
"vpaddl.u8 q0, q0 \n" // B 16 bytes -> 8 shorts.
"vpaddl.u8 q1, q1 \n" // G 16 bytes -> 8 shorts.
"vpaddl.u8 q2, q2 \n" // R 16 bytes -> 8 shorts.
MEMACCESS(1)
"vld4.8 {d8, d10, d12, d14}, [%1]! \n" // load 8 more ARGB pixels.
MEMACCESS(1)
"vld4.8 {d9, d11, d13, d15}, [%1]! \n" // load last 8 ARGB pixels.
"vpadal.u8 q0, q4 \n" // B 16 bytes -> 8 shorts.
"vpadal.u8 q1, q5 \n" // G 16 bytes -> 8 shorts.
"vpadal.u8 q2, q6 \n" // R 16 bytes -> 8 shorts.
"vrshr.u16 q0, q0, #1 \n" // 2x average
"vrshr.u16 q1, q1, #1 \n"
"vrshr.u16 q2, q2, #1 \n"
"subs %4, %4, #16 \n" // 32 processed per loop.
RGBTOUV(q0, q1, q2)
MEMACCESS(2)
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
MEMACCESS(3)
"vst1.8 {d1}, [%3]! \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(src_stride_argb), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_ARGBTOUVROW_NEON
// TODO(fbarchard): Subsample match C code.
#ifdef HAS_ARGBTOUVJROW_NEON
void ARGBToUVJRow_NEON(const uint8* src_argb, int src_stride_argb,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %1, %0, %1 \n" // src_stride + src_argb
"vmov.s16 q10, #127 / 2 \n" // UB / VR 0.500 coefficient
"vmov.s16 q11, #84 / 2 \n" // UG -0.33126 coefficient
"vmov.s16 q12, #43 / 2 \n" // UR -0.16874 coefficient
"vmov.s16 q13, #20 / 2 \n" // VB -0.08131 coefficient
"vmov.s16 q14, #107 / 2 \n" // VG -0.41869 coefficient
"vmov.u16 q15, #0x8080 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld4.8 {d0, d2, d4, d6}, [%0]! \n" // load 8 ARGB pixels.
MEMACCESS(0)
"vld4.8 {d1, d3, d5, d7}, [%0]! \n" // load next 8 ARGB pixels.
"vpaddl.u8 q0, q0 \n" // B 16 bytes -> 8 shorts.
"vpaddl.u8 q1, q1 \n" // G 16 bytes -> 8 shorts.
"vpaddl.u8 q2, q2 \n" // R 16 bytes -> 8 shorts.
MEMACCESS(1)
"vld4.8 {d8, d10, d12, d14}, [%1]! \n" // load 8 more ARGB pixels.
MEMACCESS(1)
"vld4.8 {d9, d11, d13, d15}, [%1]! \n" // load last 8 ARGB pixels.
"vpadal.u8 q0, q4 \n" // B 16 bytes -> 8 shorts.
"vpadal.u8 q1, q5 \n" // G 16 bytes -> 8 shorts.
"vpadal.u8 q2, q6 \n" // R 16 bytes -> 8 shorts.
"vrshr.u16 q0, q0, #1 \n" // 2x average
"vrshr.u16 q1, q1, #1 \n"
"vrshr.u16 q2, q2, #1 \n"
"subs %4, %4, #16 \n" // 32 processed per loop.
RGBTOUV(q0, q1, q2)
MEMACCESS(2)
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
MEMACCESS(3)
"vst1.8 {d1}, [%3]! \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(src_stride_argb), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_ARGBTOUVJROW_NEON
#ifdef HAS_BGRATOUVROW_NEON
void BGRAToUVRow_NEON(const uint8* src_bgra, int src_stride_bgra,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %1, %0, %1 \n" // src_stride + src_bgra
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
"vmov.u16 q15, #0x8080 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld4.8 {d0, d2, d4, d6}, [%0]! \n" // load 8 BGRA pixels.
MEMACCESS(0)
"vld4.8 {d1, d3, d5, d7}, [%0]! \n" // load next 8 BGRA pixels.
"vpaddl.u8 q3, q3 \n" // B 16 bytes -> 8 shorts.
"vpaddl.u8 q2, q2 \n" // G 16 bytes -> 8 shorts.
"vpaddl.u8 q1, q1 \n" // R 16 bytes -> 8 shorts.
MEMACCESS(1)
"vld4.8 {d8, d10, d12, d14}, [%1]! \n" // load 8 more BGRA pixels.
MEMACCESS(1)
"vld4.8 {d9, d11, d13, d15}, [%1]! \n" // load last 8 BGRA pixels.
"vpadal.u8 q3, q7 \n" // B 16 bytes -> 8 shorts.
"vpadal.u8 q2, q6 \n" // G 16 bytes -> 8 shorts.
"vpadal.u8 q1, q5 \n" // R 16 bytes -> 8 shorts.
"vrshr.u16 q1, q1, #1 \n" // 2x average
"vrshr.u16 q2, q2, #1 \n"
"vrshr.u16 q3, q3, #1 \n"
"subs %4, %4, #16 \n" // 32 processed per loop.
RGBTOUV(q3, q2, q1)
MEMACCESS(2)
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
MEMACCESS(3)
"vst1.8 {d1}, [%3]! \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_bgra), // %0
"+r"(src_stride_bgra), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_BGRATOUVROW_NEON
#ifdef HAS_ABGRTOUVROW_NEON
void ABGRToUVRow_NEON(const uint8* src_abgr, int src_stride_abgr,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %1, %0, %1 \n" // src_stride + src_abgr
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
"vmov.u16 q15, #0x8080 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld4.8 {d0, d2, d4, d6}, [%0]! \n" // load 8 ABGR pixels.
MEMACCESS(0)
"vld4.8 {d1, d3, d5, d7}, [%0]! \n" // load next 8 ABGR pixels.
"vpaddl.u8 q2, q2 \n" // B 16 bytes -> 8 shorts.
"vpaddl.u8 q1, q1 \n" // G 16 bytes -> 8 shorts.
"vpaddl.u8 q0, q0 \n" // R 16 bytes -> 8 shorts.
MEMACCESS(1)
"vld4.8 {d8, d10, d12, d14}, [%1]! \n" // load 8 more ABGR pixels.
MEMACCESS(1)
"vld4.8 {d9, d11, d13, d15}, [%1]! \n" // load last 8 ABGR pixels.
"vpadal.u8 q2, q6 \n" // B 16 bytes -> 8 shorts.
"vpadal.u8 q1, q5 \n" // G 16 bytes -> 8 shorts.
"vpadal.u8 q0, q4 \n" // R 16 bytes -> 8 shorts.
"vrshr.u16 q0, q0, #1 \n" // 2x average
"vrshr.u16 q1, q1, #1 \n"
"vrshr.u16 q2, q2, #1 \n"
"subs %4, %4, #16 \n" // 32 processed per loop.
RGBTOUV(q2, q1, q0)
MEMACCESS(2)
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
MEMACCESS(3)
"vst1.8 {d1}, [%3]! \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_abgr), // %0
"+r"(src_stride_abgr), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_ABGRTOUVROW_NEON
#ifdef HAS_RGBATOUVROW_NEON
void RGBAToUVRow_NEON(const uint8* src_rgba, int src_stride_rgba,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %1, %0, %1 \n" // src_stride + src_rgba
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
"vmov.u16 q15, #0x8080 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld4.8 {d0, d2, d4, d6}, [%0]! \n" // load 8 RGBA pixels.
MEMACCESS(0)
"vld4.8 {d1, d3, d5, d7}, [%0]! \n" // load next 8 RGBA pixels.
"vpaddl.u8 q0, q1 \n" // B 16 bytes -> 8 shorts.
"vpaddl.u8 q1, q2 \n" // G 16 bytes -> 8 shorts.
"vpaddl.u8 q2, q3 \n" // R 16 bytes -> 8 shorts.
MEMACCESS(1)
"vld4.8 {d8, d10, d12, d14}, [%1]! \n" // load 8 more RGBA pixels.
MEMACCESS(1)
"vld4.8 {d9, d11, d13, d15}, [%1]! \n" // load last 8 RGBA pixels.
"vpadal.u8 q0, q5 \n" // B 16 bytes -> 8 shorts.
"vpadal.u8 q1, q6 \n" // G 16 bytes -> 8 shorts.
"vpadal.u8 q2, q7 \n" // R 16 bytes -> 8 shorts.
"vrshr.u16 q0, q0, #1 \n" // 2x average
"vrshr.u16 q1, q1, #1 \n"
"vrshr.u16 q2, q2, #1 \n"
"subs %4, %4, #16 \n" // 32 processed per loop.
RGBTOUV(q0, q1, q2)
MEMACCESS(2)
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
MEMACCESS(3)
"vst1.8 {d1}, [%3]! \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_rgba), // %0
"+r"(src_stride_rgba), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_RGBATOUVROW_NEON
#ifdef HAS_RGB24TOUVROW_NEON
void RGB24ToUVRow_NEON(const uint8* src_rgb24, int src_stride_rgb24,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %1, %0, %1 \n" // src_stride + src_rgb24
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
"vmov.u16 q15, #0x8080 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld3.8 {d0, d2, d4}, [%0]! \n" // load 8 RGB24 pixels.
MEMACCESS(0)
"vld3.8 {d1, d3, d5}, [%0]! \n" // load next 8 RGB24 pixels.
"vpaddl.u8 q0, q0 \n" // B 16 bytes -> 8 shorts.
"vpaddl.u8 q1, q1 \n" // G 16 bytes -> 8 shorts.
"vpaddl.u8 q2, q2 \n" // R 16 bytes -> 8 shorts.
MEMACCESS(1)
"vld3.8 {d8, d10, d12}, [%1]! \n" // load 8 more RGB24 pixels.
MEMACCESS(1)
"vld3.8 {d9, d11, d13}, [%1]! \n" // load last 8 RGB24 pixels.
"vpadal.u8 q0, q4 \n" // B 16 bytes -> 8 shorts.
"vpadal.u8 q1, q5 \n" // G 16 bytes -> 8 shorts.
"vpadal.u8 q2, q6 \n" // R 16 bytes -> 8 shorts.
"vrshr.u16 q0, q0, #1 \n" // 2x average
"vrshr.u16 q1, q1, #1 \n"
"vrshr.u16 q2, q2, #1 \n"
"subs %4, %4, #16 \n" // 32 processed per loop.
RGBTOUV(q0, q1, q2)
MEMACCESS(2)
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
MEMACCESS(3)
"vst1.8 {d1}, [%3]! \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_rgb24), // %0
"+r"(src_stride_rgb24), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_RGB24TOUVROW_NEON
#ifdef HAS_RAWTOUVROW_NEON
void RAWToUVRow_NEON(const uint8* src_raw, int src_stride_raw,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %1, %0, %1 \n" // src_stride + src_raw
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
"vmov.u16 q15, #0x8080 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld3.8 {d0, d2, d4}, [%0]! \n" // load 8 RAW pixels.
MEMACCESS(0)
"vld3.8 {d1, d3, d5}, [%0]! \n" // load next 8 RAW pixels.
"vpaddl.u8 q2, q2 \n" // B 16 bytes -> 8 shorts.
"vpaddl.u8 q1, q1 \n" // G 16 bytes -> 8 shorts.
"vpaddl.u8 q0, q0 \n" // R 16 bytes -> 8 shorts.
MEMACCESS(1)
"vld3.8 {d8, d10, d12}, [%1]! \n" // load 8 more RAW pixels.
MEMACCESS(1)
"vld3.8 {d9, d11, d13}, [%1]! \n" // load last 8 RAW pixels.
"vpadal.u8 q2, q6 \n" // B 16 bytes -> 8 shorts.
"vpadal.u8 q1, q5 \n" // G 16 bytes -> 8 shorts.
"vpadal.u8 q0, q4 \n" // R 16 bytes -> 8 shorts.
"vrshr.u16 q0, q0, #1 \n" // 2x average
"vrshr.u16 q1, q1, #1 \n"
"vrshr.u16 q2, q2, #1 \n"
"subs %4, %4, #16 \n" // 32 processed per loop.
RGBTOUV(q2, q1, q0)
MEMACCESS(2)
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
MEMACCESS(3)
"vst1.8 {d1}, [%3]! \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_raw), // %0
"+r"(src_stride_raw), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_RAWTOUVROW_NEON
// 16x2 pixels -> 8x1. pix is number of argb pixels. e.g. 16.
#ifdef HAS_RGB565TOUVROW_NEON
void RGB565ToUVRow_NEON(const uint8* src_rgb565, int src_stride_rgb565,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %1, %0, %1 \n" // src_stride + src_argb
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
"vmov.u16 q15, #0x8080 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // load 8 RGB565 pixels.
RGB565TOARGB
"vpaddl.u8 d8, d0 \n" // B 8 bytes -> 4 shorts.
"vpaddl.u8 d10, d1 \n" // G 8 bytes -> 4 shorts.
"vpaddl.u8 d12, d2 \n" // R 8 bytes -> 4 shorts.
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // next 8 RGB565 pixels.
RGB565TOARGB
"vpaddl.u8 d9, d0 \n" // B 8 bytes -> 4 shorts.
"vpaddl.u8 d11, d1 \n" // G 8 bytes -> 4 shorts.
"vpaddl.u8 d13, d2 \n" // R 8 bytes -> 4 shorts.
MEMACCESS(1)
"vld1.8 {q0}, [%1]! \n" // load 8 RGB565 pixels.
RGB565TOARGB
"vpadal.u8 d8, d0 \n" // B 8 bytes -> 4 shorts.
"vpadal.u8 d10, d1 \n" // G 8 bytes -> 4 shorts.
"vpadal.u8 d12, d2 \n" // R 8 bytes -> 4 shorts.
MEMACCESS(1)
"vld1.8 {q0}, [%1]! \n" // next 8 RGB565 pixels.
RGB565TOARGB
"vpadal.u8 d9, d0 \n" // B 8 bytes -> 4 shorts.
"vpadal.u8 d11, d1 \n" // G 8 bytes -> 4 shorts.
"vpadal.u8 d13, d2 \n" // R 8 bytes -> 4 shorts.
"vrshr.u16 q4, q4, #1 \n" // 2x average
"vrshr.u16 q5, q5, #1 \n"
"vrshr.u16 q6, q6, #1 \n"
"subs %4, %4, #16 \n" // 16 processed per loop.
"vmul.s16 q8, q4, q10 \n" // B
"vmls.s16 q8, q5, q11 \n" // G
"vmls.s16 q8, q6, q12 \n" // R
"vadd.u16 q8, q8, q15 \n" // +128 -> unsigned
"vmul.s16 q9, q6, q10 \n" // R
"vmls.s16 q9, q5, q14 \n" // G
"vmls.s16 q9, q4, q13 \n" // B
"vadd.u16 q9, q9, q15 \n" // +128 -> unsigned
"vqshrn.u16 d0, q8, #8 \n" // 16 bit to 8 bit U
"vqshrn.u16 d1, q9, #8 \n" // 16 bit to 8 bit V
MEMACCESS(2)
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
MEMACCESS(3)
"vst1.8 {d1}, [%3]! \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_rgb565), // %0
"+r"(src_stride_rgb565), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_RGB565TOUVROW_NEON
// 16x2 pixels -> 8x1. pix is number of argb pixels. e.g. 16.
#ifdef HAS_ARGB1555TOUVROW_NEON
void ARGB1555ToUVRow_NEON(const uint8* src_argb1555, int src_stride_argb1555,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %1, %0, %1 \n" // src_stride + src_argb
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
"vmov.u16 q15, #0x8080 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // load 8 ARGB1555 pixels.
RGB555TOARGB
"vpaddl.u8 d8, d0 \n" // B 8 bytes -> 4 shorts.
"vpaddl.u8 d10, d1 \n" // G 8 bytes -> 4 shorts.
"vpaddl.u8 d12, d2 \n" // R 8 bytes -> 4 shorts.
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // next 8 ARGB1555 pixels.
RGB555TOARGB
"vpaddl.u8 d9, d0 \n" // B 8 bytes -> 4 shorts.
"vpaddl.u8 d11, d1 \n" // G 8 bytes -> 4 shorts.
"vpaddl.u8 d13, d2 \n" // R 8 bytes -> 4 shorts.
MEMACCESS(1)
"vld1.8 {q0}, [%1]! \n" // load 8 ARGB1555 pixels.
RGB555TOARGB
"vpadal.u8 d8, d0 \n" // B 8 bytes -> 4 shorts.
"vpadal.u8 d10, d1 \n" // G 8 bytes -> 4 shorts.
"vpadal.u8 d12, d2 \n" // R 8 bytes -> 4 shorts.
MEMACCESS(1)
"vld1.8 {q0}, [%1]! \n" // next 8 ARGB1555 pixels.
RGB555TOARGB
"vpadal.u8 d9, d0 \n" // B 8 bytes -> 4 shorts.
"vpadal.u8 d11, d1 \n" // G 8 bytes -> 4 shorts.
"vpadal.u8 d13, d2 \n" // R 8 bytes -> 4 shorts.
"vrshr.u16 q4, q4, #1 \n" // 2x average
"vrshr.u16 q5, q5, #1 \n"
"vrshr.u16 q6, q6, #1 \n"
"subs %4, %4, #16 \n" // 16 processed per loop.
"vmul.s16 q8, q4, q10 \n" // B
"vmls.s16 q8, q5, q11 \n" // G
"vmls.s16 q8, q6, q12 \n" // R
"vadd.u16 q8, q8, q15 \n" // +128 -> unsigned
"vmul.s16 q9, q6, q10 \n" // R
"vmls.s16 q9, q5, q14 \n" // G
"vmls.s16 q9, q4, q13 \n" // B
"vadd.u16 q9, q9, q15 \n" // +128 -> unsigned
"vqshrn.u16 d0, q8, #8 \n" // 16 bit to 8 bit U
"vqshrn.u16 d1, q9, #8 \n" // 16 bit to 8 bit V
MEMACCESS(2)
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
MEMACCESS(3)
"vst1.8 {d1}, [%3]! \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_argb1555), // %0
"+r"(src_stride_argb1555), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_ARGB1555TOUVROW_NEON
// 16x2 pixels -> 8x1. pix is number of argb pixels. e.g. 16.
#ifdef HAS_ARGB4444TOUVROW_NEON
void ARGB4444ToUVRow_NEON(const uint8* src_argb4444, int src_stride_argb4444,
uint8* dst_u, uint8* dst_v, int pix) {
asm volatile (
"add %1, %0, %1 \n" // src_stride + src_argb
"vmov.s16 q10, #112 / 2 \n" // UB / VR 0.875 coefficient
"vmov.s16 q11, #74 / 2 \n" // UG -0.5781 coefficient
"vmov.s16 q12, #38 / 2 \n" // UR -0.2969 coefficient
"vmov.s16 q13, #18 / 2 \n" // VB -0.1406 coefficient
"vmov.s16 q14, #94 / 2 \n" // VG -0.7344 coefficient
"vmov.u16 q15, #0x8080 \n" // 128.5
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // load 8 ARGB4444 pixels.
ARGB4444TOARGB
"vpaddl.u8 d8, d0 \n" // B 8 bytes -> 4 shorts.
"vpaddl.u8 d10, d1 \n" // G 8 bytes -> 4 shorts.
"vpaddl.u8 d12, d2 \n" // R 8 bytes -> 4 shorts.
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // next 8 ARGB4444 pixels.
ARGB4444TOARGB
"vpaddl.u8 d9, d0 \n" // B 8 bytes -> 4 shorts.
"vpaddl.u8 d11, d1 \n" // G 8 bytes -> 4 shorts.
"vpaddl.u8 d13, d2 \n" // R 8 bytes -> 4 shorts.
MEMACCESS(1)
"vld1.8 {q0}, [%1]! \n" // load 8 ARGB4444 pixels.
ARGB4444TOARGB
"vpadal.u8 d8, d0 \n" // B 8 bytes -> 4 shorts.
"vpadal.u8 d10, d1 \n" // G 8 bytes -> 4 shorts.
"vpadal.u8 d12, d2 \n" // R 8 bytes -> 4 shorts.
MEMACCESS(1)
"vld1.8 {q0}, [%1]! \n" // next 8 ARGB4444 pixels.
ARGB4444TOARGB
"vpadal.u8 d9, d0 \n" // B 8 bytes -> 4 shorts.
"vpadal.u8 d11, d1 \n" // G 8 bytes -> 4 shorts.
"vpadal.u8 d13, d2 \n" // R 8 bytes -> 4 shorts.
"vrshr.u16 q4, q4, #1 \n" // 2x average
"vrshr.u16 q5, q5, #1 \n"
"vrshr.u16 q6, q6, #1 \n"
"subs %4, %4, #16 \n" // 16 processed per loop.
"vmul.s16 q8, q4, q10 \n" // B
"vmls.s16 q8, q5, q11 \n" // G
"vmls.s16 q8, q6, q12 \n" // R
"vadd.u16 q8, q8, q15 \n" // +128 -> unsigned
"vmul.s16 q9, q6, q10 \n" // R
"vmls.s16 q9, q5, q14 \n" // G
"vmls.s16 q9, q4, q13 \n" // B
"vadd.u16 q9, q9, q15 \n" // +128 -> unsigned
"vqshrn.u16 d0, q8, #8 \n" // 16 bit to 8 bit U
"vqshrn.u16 d1, q9, #8 \n" // 16 bit to 8 bit V
MEMACCESS(2)
"vst1.8 {d0}, [%2]! \n" // store 8 pixels U.
MEMACCESS(3)
"vst1.8 {d1}, [%3]! \n" // store 8 pixels V.
"bgt 1b \n"
: "+r"(src_argb4444), // %0
"+r"(src_stride_argb4444), // %1
"+r"(dst_u), // %2
"+r"(dst_v), // %3
"+r"(pix) // %4
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7",
"q8", "q9", "q10", "q11", "q12", "q13", "q14", "q15"
);
}
#endif // HAS_ARGB4444TOUVROW_NEON
#ifdef HAS_RGB565TOYROW_NEON
void RGB565ToYRow_NEON(const uint8* src_rgb565, uint8* dst_y, int pix) {
asm volatile (
"vmov.u8 d24, #13 \n" // B * 0.1016 coefficient
"vmov.u8 d25, #65 \n" // G * 0.5078 coefficient
"vmov.u8 d26, #33 \n" // R * 0.2578 coefficient
"vmov.u8 d27, #16 \n" // Add 16 constant
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // load 8 RGB565 pixels.
"subs %2, %2, #8 \n" // 8 processed per loop.
RGB565TOARGB
"vmull.u8 q2, d0, d24 \n" // B
"vmlal.u8 q2, d1, d25 \n" // G
"vmlal.u8 q2, d2, d26 \n" // R
"vqrshrun.s16 d0, q2, #7 \n" // 16 bit to 8 bit Y
"vqadd.u8 d0, d27 \n"
MEMACCESS(1)
"vst1.8 {d0}, [%1]! \n" // store 8 pixels Y.
"bgt 1b \n"
: "+r"(src_rgb565), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q12", "q13"
);
}
#endif // HAS_RGB565TOYROW_NEON
#ifdef HAS_ARGB1555TOYROW_NEON
void ARGB1555ToYRow_NEON(const uint8* src_argb1555, uint8* dst_y, int pix) {
asm volatile (
"vmov.u8 d24, #13 \n" // B * 0.1016 coefficient
"vmov.u8 d25, #65 \n" // G * 0.5078 coefficient
"vmov.u8 d26, #33 \n" // R * 0.2578 coefficient
"vmov.u8 d27, #16 \n" // Add 16 constant
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // load 8 ARGB1555 pixels.
"subs %2, %2, #8 \n" // 8 processed per loop.
ARGB1555TOARGB
"vmull.u8 q2, d0, d24 \n" // B
"vmlal.u8 q2, d1, d25 \n" // G
"vmlal.u8 q2, d2, d26 \n" // R
"vqrshrun.s16 d0, q2, #7 \n" // 16 bit to 8 bit Y
"vqadd.u8 d0, d27 \n"
MEMACCESS(1)
"vst1.8 {d0}, [%1]! \n" // store 8 pixels Y.
"bgt 1b \n"
: "+r"(src_argb1555), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q12", "q13"
);
}
#endif // HAS_ARGB1555TOYROW_NEON
#ifdef HAS_ARGB4444TOYROW_NEON
void ARGB4444ToYRow_NEON(const uint8* src_argb4444, uint8* dst_y, int pix) {
asm volatile (
"vmov.u8 d24, #13 \n" // B * 0.1016 coefficient
"vmov.u8 d25, #65 \n" // G * 0.5078 coefficient
"vmov.u8 d26, #33 \n" // R * 0.2578 coefficient
"vmov.u8 d27, #16 \n" // Add 16 constant
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"vld1.8 {q0}, [%0]! \n" // load 8 ARGB4444 pixels.
"subs %2, %2, #8 \n" // 8 processed per loop.
ARGB4444TOARGB
"vmull.u8 q2, d0, d24 \n" // B
"vmlal.u8 q2, d1, d25 \n" // G
"vmlal.u8 q2, d2, d26 \n" // R
"vqrshrun.s16 d0, q2, #7 \n" // 16 bit to 8 bit Y
"vqadd.u8 d0, d27 \n"
MEMACCESS(1)
"vst1.8 {d0}, [%1]! \n" // store 8 pixels Y.
"bgt 1b \n"
: "+r"(src_argb4444), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "q0", "q1", "q2", "q3", "q12", "q13"
);
}
#endif // HAS_ARGB4444TOYROW_NEON
#ifdef HAS_BGRATOYROW_NEON
void BGRAToYRow_NEON(const uint8* src_bgra, uint8* dst_y, int pix) {
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
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 pixels of BGRA.
"subs %2, %2, #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.
"bgt 1b \n"
: "+r"(src_bgra), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16"
);
}
#endif // HAS_BGRATOYROW_NEON
#ifdef HAS_ABGRTOYROW_NEON
void ABGRToYRow_NEON(const uint8* src_abgr, uint8* dst_y, int pix) {
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
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 pixels of ABGR.
"subs %2, %2, #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.
"bgt 1b \n"
: "+r"(src_abgr), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16"
);
}
#endif // HAS_ABGRTOYROW_NEON
#ifdef HAS_RGBATOYROW_NEON
void RGBAToYRow_NEON(const uint8* src_rgba, uint8* dst_y, int pix) {
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
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 pixels of RGBA.
"subs %2, %2, #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.
"bgt 1b \n"
: "+r"(src_rgba), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16"
);
}
#endif // HAS_RGBATOYROW_NEON
#ifdef HAS_RGB24TOYROW_NEON
void RGB24ToYRow_NEON(const uint8* src_rgb24, uint8* dst_y, int pix) {
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
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld3 {v0.8b-v2.8b}, [%0], #24 \n" // load 8 pixels of RGB24.
"subs %2, %2, #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.
"bgt 1b \n"
: "+r"(src_rgb24), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16"
);
}
#endif // HAS_RGB24TOYROW_NEON
#ifdef HAS_RAWTOYROW_NEON
void RAWToYRow_NEON(const uint8* src_raw, uint8* dst_y, int pix) {
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
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld3 {v0.8b-v2.8b}, [%0], #24 \n" // load 8 pixels of RAW.
"subs %2, %2, #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.
"bgt 1b \n"
: "+r"(src_raw), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16"
);
}
#endif // HAS_RAWTOYROW_NEON
// Bilinear filter 16x2 -> 16x1
#ifdef HAS_INTERPOLATEROW_NEON
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 %4, #0 \n"
"beq 100f \n"
"cmp %4, #64 \n"
"beq 75f \n"
"cmp %4, #128 \n"
"beq 50f \n"
"cmp %4, #192 \n"
"beq 25f \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 %3, %3, #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"
"bgt 1b \n"
"b 99f \n"
// Blend 25 / 75.
"25: \n"
MEMACCESS(1)
"ld1 {v0.16b}, [%1], #16 \n"
MEMACCESS(2)
"ld1 {v1.16b}, [%2], #16 \n"
"subs %3, %3, #16 \n"
"urhadd v0.16b, v0.16b, v1.16b \n"
"urhadd v0.16b, v0.16b, v1.16b \n"
MEMACCESS(0)
"st1 {v0.16b}, [%0], #16 \n"
"bgt 25b \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 %3, %3, #16 \n"
"urhadd v0.16b, v0.16b, v1.16b \n"
MEMACCESS(0)
"st1 {v0.16b}, [%0], #16 \n"
"bgt 50b \n"
"b 99f \n"
// Blend 75 / 25.
"75: \n"
MEMACCESS(1)
"ld1 {v1.16b}, [%1], #16 \n"
MEMACCESS(2)
"ld1 {v0.16b}, [%2], #16 \n"
"subs %3, %3, #16 \n"
"urhadd v0.16b, v0.16b, v1.16b \n"
"urhadd v0.16b, v0.16b, v1.16b \n"
MEMACCESS(0)
"st1 {v0.16b}, [%0], #16 \n"
"bgt 75b \n"
"b 99f \n"
// Blend 100 / 0 - Copy row unchanged.
"100: \n"
MEMACCESS(1)
"ld1 {v0.16b}, [%1], #16 \n"
"subs %3, %3, #16 \n"
MEMACCESS(0)
"st1 {v0.16b}, [%0], #16 \n"
"bgt 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"
);
}
#endif // HAS_INTERPOLATEROW_NEON
// dr * (256 - sa) / 256 + sr = dr - dr * sa / 256 + sr
#ifdef HAS_ARGBBLENDROW_NEON
void ARGBBlendRow_NEON(const uint8* src_argb0, const uint8* src_argb1,
uint8* dst_argb, int width) {
asm volatile (
"subs %3, %3, #8 \n"
"blt 89f \n"
// Blend 8 pixels.
"8: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 pixels of ARGB0.
MEMACCESS(1)
"ld4 {v4.8b-v7.8b}, [%1], #32 \n" // load 8 pixels of ARGB1.
"subs %3, %3, #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-v3.8b}, [%2], #32 \n" // store 8 pixels of ARGB.
"bge 8b \n"
"89: \n"
"adds %3, %3, #8-1 \n"
"blt 99f \n"
// Blend 1 pixels.
"1: \n"
MEMACCESS(0)
"ld4 {v0.b-v3.b}[0], [%0], #4 \n" // load 1 pixel ARGB0.
MEMACCESS(1)
"ld4 {v4.b-v7.b}[0], [%1], #4 \n" // load 1 pixel ARGB1.
"subs %3, %3, #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-v3.b}[0], [%2], #4 \n" // store 1 pixel.
"bge 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"
);
}
#endif // HAS_ARGBBLENDROW_NEON
// Attenuate 8 pixels at a time.
#ifdef HAS_ARGBATTENUATEROW_NEON
void ARGBAttenuateRow_NEON(const uint8* src_argb, uint8* dst_argb, int width) {
asm volatile (
// Attenuate 8 pixels.
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 pixels of ARGB.
"subs %2, %2, #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-v3.8b}, [%1], #32 \n" // store 8 pixels of ARGB.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_argb), // %1
"+r"(width) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6"
);
}
#endif // HAS_ARGBATTENUATEROW_NEON
// Quantize 8 ARGB pixels (32 bytes).
// dst = (dst * scale >> 16) * interval_size + interval_offset;
#ifdef HAS_ARGBQUANTIZEROW_NEON
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.
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0] \n" // load 8 pixels of ARGB.
"subs %1, %1, #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-v3.8b}, [%0], #32 \n" // store 8 pixels of ARGB.
"bgt 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"
);
}
#endif // HAS_ARGBQUANTIZEROW_NEON
// 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.
#ifdef HAS_ARGBSHADEROW_NEON
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.
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v4.8b-v7.8b}, [%0], #32 \n" // load 8 pixels of ARGB.
"subs %2, %2, #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-v7.8b}, [%1], #32 \n" // store 8 pixels of ARGB.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_argb), // %1
"+r"(width) // %2
: "r"(value) // %3
: "cc", "memory", "v0", "v4", "v5", "v6", "v7"
);
}
#endif // HAS_ARGBSHADEROW_NEON
// 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;
#ifdef HAS_ARGBGRAYROW_NEON
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
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 ARGB pixels.
"subs %2, %2, #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
"mov v1.8b, v0.8b \n" // G
"mov v2.8b, v0.8b \n" // R
MEMACCESS(1)
"st4 {v0.8b-v3.8b}, [%1], #32 \n" // store 8 ARGB pixels.
"bgt 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_argb), // %1
"+r"(width) // %2
:
: "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v24", "v25", "v26"
);
}
#endif // HAS_ARGBGRAYROW_NEON
// 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
#ifdef HAS_ARGBSEPIAROW_NEON
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
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0] \n" // load 8 ARGB pixels.
"subs %1, %1, #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-v3.8b}, [%0], #32 \n" // store 8 ARGB pixels.
"bgt 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"
);
}
#endif // HAS_ARGBSEPIAROW_NEON
// 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.
#ifdef HAS_ARGBCOLORMATRIXROW_NEON
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.
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v16.8b-v19.8b}, [%0], #32 \n" // load 8 ARGB pixels.
"subs %2, %2, #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-v19.8b}, [%1], #32 \n" // store 8 ARGB pixels.
"bgt 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"
);
}
#endif // HAS_ARGBCOLORMATRIXROW_NEON
// TODO(fbarchard): fix vqshrun in ARGBMultiplyRow_NEON and reenable.
// Multiply 2 rows of ARGB pixels together, 8 pixels at a time.
#ifdef HAS_ARGBMULTIPLYROW_NEON
void ARGBMultiplyRow_NEON(const uint8* src_argb0, const uint8* src_argb1,
uint8* dst_argb, int width) {
asm volatile (
// 8 pixel loop.
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 ARGB pixels.
MEMACCESS(1)
"ld4 {v4.8b-v7.8b}, [%1], #32 \n" // load 8 more ARGB pixels.
"subs %3, %3, #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-v3.8b}, [%2], #32 \n" // store 8 ARGB pixels.
"bgt 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"
);
}
#endif // HAS_ARGBMULTIPLYROW_NEON
// Add 2 rows of ARGB pixels together, 8 pixels at a time.
#ifdef HAS_ARGBADDROW_NEON
void ARGBAddRow_NEON(const uint8* src_argb0, const uint8* src_argb1,
uint8* dst_argb, int width) {
asm volatile (
// 8 pixel loop.
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 ARGB pixels.
MEMACCESS(1)
"ld4 {v4.8b-v7.8b}, [%1], #32 \n" // load 8 more ARGB pixels.
"subs %3, %3, #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-v3.8b}, [%2], #32 \n" // store 8 ARGB pixels.
"bgt 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"
);
}
#endif // HAS_ARGBADDROW_NEON
// Subtract 2 rows of ARGB pixels, 8 pixels at a time.
#ifdef HAS_ARGBSUBTRACTROW_NEON
void ARGBSubtractRow_NEON(const uint8* src_argb0, const uint8* src_argb1,
uint8* dst_argb, int width) {
asm volatile (
// 8 pixel loop.
".p2align 2 \n"
"1: \n"
MEMACCESS(0)
"ld4 {v0.8b-v3.8b}, [%0], #32 \n" // load 8 ARGB pixels.
MEMACCESS(1)
"ld4 {v4.8b-v7.8b}, [%1], #32 \n" // load 8 more ARGB pixels.
"subs %3, %3, #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-v3.8b}, [%2], #32 \n" // store 8 ARGB pixels.
"bgt 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"
);
}
#endif // HAS_ARGBSUBTRACTROW_NEON
// Adds Sobel X and Sobel Y and stores Sobel into ARGB.
// A = 255
// R = Sobel
// G = Sobel
// B = Sobel
#ifdef HAS_SOBELROW_NEON
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.
".p2align 2 \n"
"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 %3, %3, #8 \n" // 8 processed per loop.
"uqadd v0.8b, v0.8b, v1.8b \n" // add
"mov v1.8b, v0.8b \n"
"mov v2.8b, v0.8b \n"
MEMACCESS(2)
"st4 {v0.8b-v3.8b}, [%2], #32 \n" // store 8 ARGB pixels.
"bgt 1b \n"
: "+r"(src_sobelx), // %0
"+r"(src_sobely), // %1
"+r"(dst_argb), // %2
"+r"(width) // %3
:
: "cc", "memory", "v0", "v1", "v2", "v3"
);
}
#endif // HAS_SOBELROW_NEON
// Adds Sobel X and Sobel Y and stores Sobel into plane.
#ifdef HAS_SOBELTOPLANEROW_NEON
void SobelToPlaneRow_NEON(const uint8* src_sobelx, const uint8* src_sobely,
uint8* dst_y, int width) {
asm volatile (
// 16 pixel loop.
".p2align 2 \n"
"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 %3, %3, #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.
"bgt 1b \n"
: "+r"(src_sobelx), // %0
"+r"(src_sobely), // %1
"+r"(dst_y), // %2
"+r"(width) // %3
:
: "cc", "memory", "v0", "v1"
);
}
#endif // HAS_SOBELTOPLANEROW_NEON
// Mixes Sobel X, Sobel Y and Sobel into ARGB.
// A = 255
// R = Sobel X
// G = Sobel
// B = Sobel Y
#ifdef HAS_SOBELXYROW_NEON
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.
".p2align 2 \n"
"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 %3, %3, #8 \n" // 8 processed per loop.
"uqadd v1.8b, v0.8b, v2.8b \n" // add
MEMACCESS(2)
"st4 {v0.8b-v3.8b}, [%2], #32 \n" // store 8 ARGB pixels.
"bgt 1b \n"
: "+r"(src_sobelx), // %0
"+r"(src_sobely), // %1
"+r"(dst_argb), // %2
"+r"(width) // %3
:
: "cc", "memory", "v0", "v1", "v2", "v3"
);
}
#endif // HAS_SOBELXYROW_NEON
// SobelX as a matrix is
// -1 0 1
// -2 0 2
// -1 0 1
#ifdef HAS_SOBELXROW_NEON
void SobelXRow_NEON(const uint8* src_y0, const uint8* src_y1,
const uint8* src_y2, uint8* dst_sobelx, int width) {
asm volatile (
".p2align 2 \n"
"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 %4, %4, #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
"bgt 1b \n"
: "+r"(src_y0), // %0
"+r"(src_y1), // %1
"+r"(src_y2), // %2
"+r"(dst_sobelx), // %3
"+r"(width) // %4
: "r"(2), // %5
"r"(6) // %6
: "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List
);
}
#endif // HAS_SOBELXROW_NEON
// SobelY as a matrix is
// -1 -2 -1
// 0 0 0
// 1 2 1
#ifdef HAS_SOBELYROW_NEON
void SobelYRow_NEON(const uint8* src_y0, const uint8* src_y1,
uint8* dst_sobely, int width) {
asm volatile (
".p2align 2 \n"
"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 %3, %3, #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
"bgt 1b \n"
: "+r"(src_y0), // %0
"+r"(src_y1), // %1
"+r"(dst_sobely), // %2
"+r"(width) // %3
: "r"(1), // %4
"r"(6) // %5
: "cc", "memory", "v0", "v1", "v2", "v3" // Clobber List
);
}
#endif // HAS_SOBELYROW_NEON
#endif // !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__)
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv
#endif
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