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axmol/external/jpeg/simd/arm/aarch64/jsimd_neon.S

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/*
* Armv8 Neon optimizations for libjpeg-turbo
*
* Copyright (C) 2009-2011, Nokia Corporation and/or its subsidiary(-ies).
* All Rights Reserved.
* Author: Siarhei Siamashka <siarhei.siamashka@nokia.com>
* Copyright (C) 2013-2014, Linaro Limited. All Rights Reserved.
* Author: Ragesh Radhakrishnan <ragesh.r@linaro.org>
* Copyright (C) 2014-2016, 2020, D. R. Commander. All Rights Reserved.
* Copyright (C) 2015-2016, 2018, Matthieu Darbois. All Rights Reserved.
* Copyright (C) 2016, Siarhei Siamashka. All Rights Reserved.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
#if defined(__linux__) && defined(__ELF__)
.section .note.GNU-stack, "", %progbits /* mark stack as non-executable */
#endif
#if defined(__APPLE__)
.section __DATA, __const
#elif defined(_WIN32)
.section .rdata
#else
.section .rodata, "a", %progbits
#endif
/* Constants for jsimd_idct_islow_neon() */
#define F_0_298 2446 /* FIX(0.298631336) */
#define F_0_390 3196 /* FIX(0.390180644) */
#define F_0_541 4433 /* FIX(0.541196100) */
#define F_0_765 6270 /* FIX(0.765366865) */
#define F_0_899 7373 /* FIX(0.899976223) */
#define F_1_175 9633 /* FIX(1.175875602) */
#define F_1_501 12299 /* FIX(1.501321110) */
#define F_1_847 15137 /* FIX(1.847759065) */
#define F_1_961 16069 /* FIX(1.961570560) */
#define F_2_053 16819 /* FIX(2.053119869) */
#define F_2_562 20995 /* FIX(2.562915447) */
#define F_3_072 25172 /* FIX(3.072711026) */
.balign 16
Ljsimd_idct_islow_neon_consts:
.short F_0_298
.short -F_0_390
.short F_0_541
.short F_0_765
.short - F_0_899
.short F_1_175
.short F_1_501
.short - F_1_847
.short - F_1_961
.short F_2_053
.short - F_2_562
.short F_3_072
.short 0 /* padding */
.short 0
.short 0
.short 0
#undef F_0_298
#undef F_0_390
#undef F_0_541
#undef F_0_765
#undef F_0_899
#undef F_1_175
#undef F_1_501
#undef F_1_847
#undef F_1_961
#undef F_2_053
#undef F_2_562
#undef F_3_072
/* Constants for jsimd_ycc_*_neon() */
.balign 16
Ljsimd_ycc_rgb_neon_consts:
.short 0, 0, 0, 0
.short 22971, -11277, -23401, 29033
.short -128, -128, -128, -128
.short -128, -128, -128, -128
/* Constants for jsimd_*_ycc_neon() */
.balign 16
Ljsimd_rgb_ycc_neon_consts:
.short 19595, 38470, 7471, 11059
.short 21709, 32768, 27439, 5329
.short 32767, 128, 32767, 128
.short 32767, 128, 32767, 128
/* Constants for jsimd_fdct_islow_neon() */
#define F_0_298 2446 /* FIX(0.298631336) */
#define F_0_390 3196 /* FIX(0.390180644) */
#define F_0_541 4433 /* FIX(0.541196100) */
#define F_0_765 6270 /* FIX(0.765366865) */
#define F_0_899 7373 /* FIX(0.899976223) */
#define F_1_175 9633 /* FIX(1.175875602) */
#define F_1_501 12299 /* FIX(1.501321110) */
#define F_1_847 15137 /* FIX(1.847759065) */
#define F_1_961 16069 /* FIX(1.961570560) */
#define F_2_053 16819 /* FIX(2.053119869) */
#define F_2_562 20995 /* FIX(2.562915447) */
#define F_3_072 25172 /* FIX(3.072711026) */
.balign 16
Ljsimd_fdct_islow_neon_consts:
.short F_0_298
.short -F_0_390
.short F_0_541
.short F_0_765
.short - F_0_899
.short F_1_175
.short F_1_501
.short - F_1_847
.short - F_1_961
.short F_2_053
.short - F_2_562
.short F_3_072
.short 0 /* padding */
.short 0
.short 0
.short 0
#undef F_0_298
#undef F_0_390
#undef F_0_541
#undef F_0_765
#undef F_0_899
#undef F_1_175
#undef F_1_501
#undef F_1_847
#undef F_1_961
#undef F_2_053
#undef F_2_562
#undef F_3_072
/* Constants for jsimd_huff_encode_one_block_neon() */
.balign 16
Ljsimd_huff_encode_one_block_neon_consts:
.byte 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, \
0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
.byte 0, 1, 2, 3, 16, 17, 32, 33, \
18, 19, 4, 5, 6, 7, 20, 21 /* L0 => L3 : 4 lines OK */
.byte 34, 35, 48, 49, 255, 255, 50, 51, \
36, 37, 22, 23, 8, 9, 10, 11 /* L0 => L3 : 4 lines OK */
.byte 8, 9, 22, 23, 36, 37, 50, 51, \
255, 255, 255, 255, 255, 255, 52, 53 /* L1 => L4 : 4 lines OK */
.byte 54, 55, 40, 41, 26, 27, 12, 13, \
14, 15, 28, 29, 42, 43, 56, 57 /* L0 => L3 : 4 lines OK */
.byte 6, 7, 20, 21, 34, 35, 48, 49, \
50, 51, 36, 37, 22, 23, 8, 9 /* L4 => L7 : 4 lines OK */
.byte 42, 43, 28, 29, 14, 15, 30, 31, \
44, 45, 58, 59, 255, 255, 255, 255 /* L1 => L4 : 4 lines OK */
.byte 255, 255, 255, 255, 56, 57, 42, 43, \
28, 29, 14, 15, 30, 31, 44, 45 /* L3 => L6 : 4 lines OK */
.byte 26, 27, 40, 41, 42, 43, 28, 29, \
14, 15, 30, 31, 44, 45, 46, 47 /* L5 => L7 : 3 lines OK */
.byte 255, 255, 255, 255, 0, 1, 255, 255, \
255, 255, 255, 255, 255, 255, 255, 255 /* L4 : 1 lines OK */
.byte 255, 255, 255, 255, 255, 255, 255, 255, \
0, 1, 16, 17, 2, 3, 255, 255 /* L5 => L6 : 2 lines OK */
.byte 255, 255, 255, 255, 255, 255, 255, 255, \
255, 255, 255, 255, 8, 9, 22, 23 /* L5 => L6 : 2 lines OK */
.byte 4, 5, 6, 7, 255, 255, 255, 255, \
255, 255, 255, 255, 255, 255, 255, 255 /* L7 : 1 line OK */
/*****************************************************************************/
/* Supplementary macro for setting function attributes */
.macro asm_function fname
#ifdef __APPLE__
.private_extern _\fname
.globl _\fname
_\fname:
#else
.global \fname
#ifdef __ELF__
.hidden \fname
.type \fname, %function
#endif
\fname:
#endif
.endm
/* Get symbol location */
.macro get_symbol_loc reg, symbol
#ifdef __APPLE__
adrp \reg, \symbol@PAGE
add \reg, \reg, \symbol@PAGEOFF
#else
adrp \reg, \symbol
add \reg, \reg, :lo12:\symbol
#endif
.endm
.macro transpose_8x8 l0, l1, l2, l3, l4, l5, l6, l7, t0, t1, t2, t3
trn1 \t0\().8h, \l0\().8h, \l1\().8h
trn1 \t1\().8h, \l2\().8h, \l3\().8h
trn1 \t2\().8h, \l4\().8h, \l5\().8h
trn1 \t3\().8h, \l6\().8h, \l7\().8h
trn2 \l1\().8h, \l0\().8h, \l1\().8h
trn2 \l3\().8h, \l2\().8h, \l3\().8h
trn2 \l5\().8h, \l4\().8h, \l5\().8h
trn2 \l7\().8h, \l6\().8h, \l7\().8h
trn1 \l4\().4s, \t2\().4s, \t3\().4s
trn2 \t3\().4s, \t2\().4s, \t3\().4s
trn1 \t2\().4s, \t0\().4s, \t1\().4s
trn2 \l2\().4s, \t0\().4s, \t1\().4s
trn1 \t0\().4s, \l1\().4s, \l3\().4s
trn2 \l3\().4s, \l1\().4s, \l3\().4s
trn2 \t1\().4s, \l5\().4s, \l7\().4s
trn1 \l5\().4s, \l5\().4s, \l7\().4s
trn2 \l6\().2d, \l2\().2d, \t3\().2d
trn1 \l0\().2d, \t2\().2d, \l4\().2d
trn1 \l1\().2d, \t0\().2d, \l5\().2d
trn2 \l7\().2d, \l3\().2d, \t1\().2d
trn1 \l2\().2d, \l2\().2d, \t3\().2d
trn2 \l4\().2d, \t2\().2d, \l4\().2d
trn1 \l3\().2d, \l3\().2d, \t1\().2d
trn2 \l5\().2d, \t0\().2d, \l5\().2d
.endm
#define CENTERJSAMPLE 128
/*****************************************************************************/
/*
* Perform dequantization and inverse DCT on one block of coefficients.
*
* GLOBAL(void)
* jsimd_idct_islow_neon(void *dct_table, JCOEFPTR coef_block,
* JSAMPARRAY output_buf, JDIMENSION output_col)
*/
#define CONST_BITS 13
#define PASS1_BITS 2
#define XFIX_P_0_298 v0.h[0]
#define XFIX_N_0_390 v0.h[1]
#define XFIX_P_0_541 v0.h[2]
#define XFIX_P_0_765 v0.h[3]
#define XFIX_N_0_899 v0.h[4]
#define XFIX_P_1_175 v0.h[5]
#define XFIX_P_1_501 v0.h[6]
#define XFIX_N_1_847 v0.h[7]
#define XFIX_N_1_961 v1.h[0]
#define XFIX_P_2_053 v1.h[1]
#define XFIX_N_2_562 v1.h[2]
#define XFIX_P_3_072 v1.h[3]
asm_function jsimd_idct_islow_neon
DCT_TABLE .req x0
COEF_BLOCK .req x1
OUTPUT_BUF .req x2
OUTPUT_COL .req x3
TMP1 .req x0
TMP2 .req x1
TMP3 .req x9
TMP4 .req x10
TMP5 .req x11
TMP6 .req x12
TMP7 .req x13
TMP8 .req x14
/* OUTPUT_COL is a JDIMENSION (unsigned int) argument, so the ABI doesn't
guarantee that the upper (unused) 32 bits of x3 are valid. This
instruction ensures that those bits are set to zero. */
uxtw x3, w3
sub sp, sp, #64
get_symbol_loc x15, Ljsimd_idct_islow_neon_consts
mov x10, sp
st1 {v8.8b, v9.8b, v10.8b, v11.8b}, [x10], #32
st1 {v12.8b, v13.8b, v14.8b, v15.8b}, [x10], #32
ld1 {v0.8h, v1.8h}, [x15]
ld1 {v2.8h, v3.8h, v4.8h, v5.8h}, [COEF_BLOCK], #64
ld1 {v18.8h, v19.8h, v20.8h, v21.8h}, [DCT_TABLE], #64
ld1 {v6.8h, v7.8h, v8.8h, v9.8h}, [COEF_BLOCK], #64
ld1 {v22.8h, v23.8h, v24.8h, v25.8h}, [DCT_TABLE], #64
cmeq v16.8h, v3.8h, #0
cmeq v26.8h, v4.8h, #0
cmeq v27.8h, v5.8h, #0
cmeq v28.8h, v6.8h, #0
cmeq v29.8h, v7.8h, #0
cmeq v30.8h, v8.8h, #0
cmeq v31.8h, v9.8h, #0
and v10.16b, v16.16b, v26.16b
and v11.16b, v27.16b, v28.16b
and v12.16b, v29.16b, v30.16b
and v13.16b, v31.16b, v10.16b
and v14.16b, v11.16b, v12.16b
mul v2.8h, v2.8h, v18.8h
and v15.16b, v13.16b, v14.16b
shl v10.8h, v2.8h, #(PASS1_BITS)
sqxtn v16.8b, v15.8h
mov TMP1, v16.d[0]
mvn TMP2, TMP1
cbnz TMP2, 2f
/* case all AC coeffs are zeros */
dup v2.2d, v10.d[0]
dup v6.2d, v10.d[1]
mov v3.16b, v2.16b
mov v7.16b, v6.16b
mov v4.16b, v2.16b
mov v8.16b, v6.16b
mov v5.16b, v2.16b
mov v9.16b, v6.16b
1:
/* for this transpose, we should organise data like this:
* 00, 01, 02, 03, 40, 41, 42, 43
* 10, 11, 12, 13, 50, 51, 52, 53
* 20, 21, 22, 23, 60, 61, 62, 63
* 30, 31, 32, 33, 70, 71, 72, 73
* 04, 05, 06, 07, 44, 45, 46, 47
* 14, 15, 16, 17, 54, 55, 56, 57
* 24, 25, 26, 27, 64, 65, 66, 67
* 34, 35, 36, 37, 74, 75, 76, 77
*/
trn1 v28.8h, v2.8h, v3.8h
trn1 v29.8h, v4.8h, v5.8h
trn1 v30.8h, v6.8h, v7.8h
trn1 v31.8h, v8.8h, v9.8h
trn2 v16.8h, v2.8h, v3.8h
trn2 v17.8h, v4.8h, v5.8h
trn2 v18.8h, v6.8h, v7.8h
trn2 v19.8h, v8.8h, v9.8h
trn1 v2.4s, v28.4s, v29.4s
trn1 v6.4s, v30.4s, v31.4s
trn1 v3.4s, v16.4s, v17.4s
trn1 v7.4s, v18.4s, v19.4s
trn2 v4.4s, v28.4s, v29.4s
trn2 v8.4s, v30.4s, v31.4s
trn2 v5.4s, v16.4s, v17.4s
trn2 v9.4s, v18.4s, v19.4s
/* Even part: reverse the even part of the forward DCT. */
add v18.8h, v4.8h, v8.8h /* z2 + z3 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]) + DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]) */
add v22.8h, v2.8h, v6.8h /* z2 + z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) + DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]) */
smull2 v19.4s, v18.8h, XFIX_P_0_541 /* z1h z1 = MULTIPLY(z2 + z3, FIX_0_541196100); */
sub v26.8h, v2.8h, v6.8h /* z2 - z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) - DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]) */
smull v18.4s, v18.4h, XFIX_P_0_541 /* z1l z1 = MULTIPLY(z2 + z3, FIX_0_541196100); */
sshll2 v23.4s, v22.8h, #(CONST_BITS) /* tmp0h tmp0 = LEFT_SHIFT(z2 + z3, CONST_BITS); */
mov v21.16b, v19.16b /* tmp3 = z1 */
mov v20.16b, v18.16b /* tmp3 = z1 */
smlal2 v19.4s, v8.8h, XFIX_N_1_847 /* tmp2h tmp2 = z1 + MULTIPLY(z3, -FIX_1_847759065); */
smlal v18.4s, v8.4h, XFIX_N_1_847 /* tmp2l tmp2 = z1 + MULTIPLY(z3, -FIX_1_847759065); */
sshll2 v27.4s, v26.8h, #(CONST_BITS) /* tmp1h tmp1 = LEFT_SHIFT(z2 - z3, CONST_BITS); */
smlal2 v21.4s, v4.8h, XFIX_P_0_765 /* tmp3h tmp3 = z1 + MULTIPLY(z2, FIX_0_765366865); */
smlal v20.4s, v4.4h, XFIX_P_0_765 /* tmp3l tmp3 = z1 + MULTIPLY(z2, FIX_0_765366865); */
sshll v22.4s, v22.4h, #(CONST_BITS) /* tmp0l tmp0 = LEFT_SHIFT(z2 + z3, CONST_BITS); */
sshll v26.4s, v26.4h, #(CONST_BITS) /* tmp1l tmp1 = LEFT_SHIFT(z2 - z3, CONST_BITS); */
add v2.4s, v22.4s, v20.4s /* tmp10l tmp10 = tmp0 + tmp3; */
sub v6.4s, v22.4s, v20.4s /* tmp13l tmp13 = tmp0 - tmp3; */
add v8.4s, v26.4s, v18.4s /* tmp11l tmp11 = tmp1 + tmp2; */
sub v4.4s, v26.4s, v18.4s /* tmp12l tmp12 = tmp1 - tmp2; */
add v28.4s, v23.4s, v21.4s /* tmp10h tmp10 = tmp0 + tmp3; */
sub v31.4s, v23.4s, v21.4s /* tmp13h tmp13 = tmp0 - tmp3; */
add v29.4s, v27.4s, v19.4s /* tmp11h tmp11 = tmp1 + tmp2; */
sub v30.4s, v27.4s, v19.4s /* tmp12h tmp12 = tmp1 - tmp2; */
/* Odd part per figure 8; the matrix is unitary and hence its
* transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively.
*/
add v22.8h, v9.8h, v5.8h /* z3 = tmp0 + tmp2 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]) + DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]) */
add v24.8h, v7.8h, v3.8h /* z4 = tmp1 + tmp3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]) + DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]) */
add v18.8h, v9.8h, v3.8h /* z1 = tmp0 + tmp3 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]) + DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]) */
add v20.8h, v7.8h, v5.8h /* z2 = tmp1 + tmp2 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]) + DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]) */
add v26.8h, v22.8h, v24.8h /* z5 = z3 + z4 */
smull2 v11.4s, v9.8h, XFIX_P_0_298 /* tmp0 = MULTIPLY(tmp0, FIX_0_298631336) */
smull2 v13.4s, v7.8h, XFIX_P_2_053 /* tmp1 = MULTIPLY(tmp1, FIX_2_053119869) */
smull2 v15.4s, v5.8h, XFIX_P_3_072 /* tmp2 = MULTIPLY(tmp2, FIX_3_072711026) */
smull2 v17.4s, v3.8h, XFIX_P_1_501 /* tmp3 = MULTIPLY(tmp3, FIX_1_501321110) */
smull2 v27.4s, v26.8h, XFIX_P_1_175 /* z5h z5 = MULTIPLY(z3 + z4, FIX_1_175875602) */
smull2 v23.4s, v22.8h, XFIX_N_1_961 /* z3 = MULTIPLY(z3, -FIX_1_961570560) */
smull2 v25.4s, v24.8h, XFIX_N_0_390 /* z4 = MULTIPLY(z4, -FIX_0_390180644) */
smull2 v19.4s, v18.8h, XFIX_N_0_899 /* z1 = MULTIPLY(z1, -FIX_0_899976223) */
smull2 v21.4s, v20.8h, XFIX_N_2_562 /* z2 = MULTIPLY(z2, -FIX_2_562915447) */
smull v10.4s, v9.4h, XFIX_P_0_298 /* tmp0 = MULTIPLY(tmp0, FIX_0_298631336) */
smull v12.4s, v7.4h, XFIX_P_2_053 /* tmp1 = MULTIPLY(tmp1, FIX_2_053119869) */
smull v14.4s, v5.4h, XFIX_P_3_072 /* tmp2 = MULTIPLY(tmp2, FIX_3_072711026) */
smull v16.4s, v3.4h, XFIX_P_1_501 /* tmp3 = MULTIPLY(tmp3, FIX_1_501321110) */
smull v26.4s, v26.4h, XFIX_P_1_175 /* z5l z5 = MULTIPLY(z3 + z4, FIX_1_175875602) */
smull v22.4s, v22.4h, XFIX_N_1_961 /* z3 = MULTIPLY(z3, -FIX_1_961570560) */
smull v24.4s, v24.4h, XFIX_N_0_390 /* z4 = MULTIPLY(z4, -FIX_0_390180644) */
smull v18.4s, v18.4h, XFIX_N_0_899 /* z1 = MULTIPLY(z1, -FIX_0_899976223) */
smull v20.4s, v20.4h, XFIX_N_2_562 /* z2 = MULTIPLY(z2, -FIX_2_562915447) */
add v23.4s, v23.4s, v27.4s /* z3 += z5 */
add v22.4s, v22.4s, v26.4s /* z3 += z5 */
add v25.4s, v25.4s, v27.4s /* z4 += z5 */
add v24.4s, v24.4s, v26.4s /* z4 += z5 */
add v11.4s, v11.4s, v19.4s /* tmp0 += z1 */
add v10.4s, v10.4s, v18.4s /* tmp0 += z1 */
add v13.4s, v13.4s, v21.4s /* tmp1 += z2 */
add v12.4s, v12.4s, v20.4s /* tmp1 += z2 */
add v15.4s, v15.4s, v21.4s /* tmp2 += z2 */
add v14.4s, v14.4s, v20.4s /* tmp2 += z2 */
add v17.4s, v17.4s, v19.4s /* tmp3 += z1 */
add v16.4s, v16.4s, v18.4s /* tmp3 += z1 */
add v11.4s, v11.4s, v23.4s /* tmp0 += z3 */
add v10.4s, v10.4s, v22.4s /* tmp0 += z3 */
add v13.4s, v13.4s, v25.4s /* tmp1 += z4 */
add v12.4s, v12.4s, v24.4s /* tmp1 += z4 */
add v17.4s, v17.4s, v25.4s /* tmp3 += z4 */
add v16.4s, v16.4s, v24.4s /* tmp3 += z4 */
add v15.4s, v15.4s, v23.4s /* tmp2 += z3 */
add v14.4s, v14.4s, v22.4s /* tmp2 += z3 */
/* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */
add v18.4s, v2.4s, v16.4s /* tmp10 + tmp3 */
add v19.4s, v28.4s, v17.4s /* tmp10 + tmp3 */
sub v20.4s, v2.4s, v16.4s /* tmp10 - tmp3 */
sub v21.4s, v28.4s, v17.4s /* tmp10 - tmp3 */
add v22.4s, v8.4s, v14.4s /* tmp11 + tmp2 */
add v23.4s, v29.4s, v15.4s /* tmp11 + tmp2 */
sub v24.4s, v8.4s, v14.4s /* tmp11 - tmp2 */
sub v25.4s, v29.4s, v15.4s /* tmp11 - tmp2 */
add v26.4s, v4.4s, v12.4s /* tmp12 + tmp1 */
add v27.4s, v30.4s, v13.4s /* tmp12 + tmp1 */
sub v28.4s, v4.4s, v12.4s /* tmp12 - tmp1 */
sub v29.4s, v30.4s, v13.4s /* tmp12 - tmp1 */
add v14.4s, v6.4s, v10.4s /* tmp13 + tmp0 */
add v15.4s, v31.4s, v11.4s /* tmp13 + tmp0 */
sub v16.4s, v6.4s, v10.4s /* tmp13 - tmp0 */
sub v17.4s, v31.4s, v11.4s /* tmp13 - tmp0 */
shrn v2.4h, v18.4s, #16 /* wsptr[DCTSIZE*0] = (int)DESCALE(tmp10 + tmp3, CONST_BITS+PASS1_BITS+3) */
shrn v9.4h, v20.4s, #16 /* wsptr[DCTSIZE*7] = (int)DESCALE(tmp10 - tmp3, CONST_BITS+PASS1_BITS+3) */
shrn v3.4h, v22.4s, #16 /* wsptr[DCTSIZE*1] = (int)DESCALE(tmp11 + tmp2, CONST_BITS+PASS1_BITS+3) */
shrn v8.4h, v24.4s, #16 /* wsptr[DCTSIZE*6] = (int)DESCALE(tmp11 - tmp2, CONST_BITS+PASS1_BITS+3) */
shrn v4.4h, v26.4s, #16 /* wsptr[DCTSIZE*2] = (int)DESCALE(tmp12 + tmp1, CONST_BITS+PASS1_BITS+3) */
shrn v7.4h, v28.4s, #16 /* wsptr[DCTSIZE*5] = (int)DESCALE(tmp12 - tmp1, CONST_BITS+PASS1_BITS+3) */
shrn v5.4h, v14.4s, #16 /* wsptr[DCTSIZE*3] = (int)DESCALE(tmp13 + tmp0, CONST_BITS+PASS1_BITS+3) */
shrn v6.4h, v16.4s, #16 /* wsptr[DCTSIZE*4] = (int)DESCALE(tmp13 - tmp0, CONST_BITS+PASS1_BITS+3) */
shrn2 v2.8h, v19.4s, #16 /* wsptr[DCTSIZE*0] = (int)DESCALE(tmp10 + tmp3, CONST_BITS+PASS1_BITS+3) */
shrn2 v9.8h, v21.4s, #16 /* wsptr[DCTSIZE*7] = (int)DESCALE(tmp10 - tmp3, CONST_BITS+PASS1_BITS+3) */
shrn2 v3.8h, v23.4s, #16 /* wsptr[DCTSIZE*1] = (int)DESCALE(tmp11 + tmp2, CONST_BITS+PASS1_BITS+3) */
shrn2 v8.8h, v25.4s, #16 /* wsptr[DCTSIZE*6] = (int)DESCALE(tmp11 - tmp2, CONST_BITS+PASS1_BITS+3) */
shrn2 v4.8h, v27.4s, #16 /* wsptr[DCTSIZE*2] = (int)DESCALE(tmp12 + tmp1, CONST_BITS+PASS1_BITS+3) */
shrn2 v7.8h, v29.4s, #16 /* wsptr[DCTSIZE*5] = (int)DESCALE(tmp12 - tmp1, CONST_BITS+PASS1_BITS+3) */
shrn2 v5.8h, v15.4s, #16 /* wsptr[DCTSIZE*3] = (int)DESCALE(tmp13 + tmp0, CONST_BITS+PASS1_BITS+3) */
shrn2 v6.8h, v17.4s, #16 /* wsptr[DCTSIZE*4] = (int)DESCALE(tmp13 - tmp0, CONST_BITS+PASS1_BITS+3) */
movi v0.16b, #(CENTERJSAMPLE)
/* Prepare pointers (dual-issue with Neon instructions) */
ldp TMP1, TMP2, [OUTPUT_BUF], 16
sqrshrn v28.8b, v2.8h, #(CONST_BITS + PASS1_BITS + 3 - 16)
ldp TMP3, TMP4, [OUTPUT_BUF], 16
sqrshrn v29.8b, v3.8h, #(CONST_BITS + PASS1_BITS + 3 - 16)
add TMP1, TMP1, OUTPUT_COL
sqrshrn v30.8b, v4.8h, #(CONST_BITS + PASS1_BITS + 3 - 16)
add TMP2, TMP2, OUTPUT_COL
sqrshrn v31.8b, v5.8h, #(CONST_BITS + PASS1_BITS + 3 - 16)
add TMP3, TMP3, OUTPUT_COL
sqrshrn2 v28.16b, v6.8h, #(CONST_BITS + PASS1_BITS + 3 - 16)
add TMP4, TMP4, OUTPUT_COL
sqrshrn2 v29.16b, v7.8h, #(CONST_BITS + PASS1_BITS + 3 - 16)
ldp TMP5, TMP6, [OUTPUT_BUF], 16
sqrshrn2 v30.16b, v8.8h, #(CONST_BITS + PASS1_BITS + 3 - 16)
ldp TMP7, TMP8, [OUTPUT_BUF], 16
sqrshrn2 v31.16b, v9.8h, #(CONST_BITS + PASS1_BITS + 3 - 16)
add TMP5, TMP5, OUTPUT_COL
add v16.16b, v28.16b, v0.16b
add TMP6, TMP6, OUTPUT_COL
add v18.16b, v29.16b, v0.16b
add TMP7, TMP7, OUTPUT_COL
add v20.16b, v30.16b, v0.16b
add TMP8, TMP8, OUTPUT_COL
add v22.16b, v31.16b, v0.16b
/* Transpose the final 8-bit samples */
trn1 v28.16b, v16.16b, v18.16b
trn1 v30.16b, v20.16b, v22.16b
trn2 v29.16b, v16.16b, v18.16b
trn2 v31.16b, v20.16b, v22.16b
trn1 v16.8h, v28.8h, v30.8h
trn2 v18.8h, v28.8h, v30.8h
trn1 v20.8h, v29.8h, v31.8h
trn2 v22.8h, v29.8h, v31.8h
uzp1 v28.4s, v16.4s, v18.4s
uzp2 v30.4s, v16.4s, v18.4s
uzp1 v29.4s, v20.4s, v22.4s
uzp2 v31.4s, v20.4s, v22.4s
/* Store results to the output buffer */
st1 {v28.d}[0], [TMP1]
st1 {v29.d}[0], [TMP2]
st1 {v28.d}[1], [TMP3]
st1 {v29.d}[1], [TMP4]
st1 {v30.d}[0], [TMP5]
st1 {v31.d}[0], [TMP6]
st1 {v30.d}[1], [TMP7]
st1 {v31.d}[1], [TMP8]
ld1 {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], #32
ld1 {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], #32
blr x30
.balign 16
2:
mul v3.8h, v3.8h, v19.8h
mul v4.8h, v4.8h, v20.8h
mul v5.8h, v5.8h, v21.8h
add TMP4, xzr, TMP2, LSL #32
mul v6.8h, v6.8h, v22.8h
mul v7.8h, v7.8h, v23.8h
adds TMP3, xzr, TMP2, LSR #32
mul v8.8h, v8.8h, v24.8h
mul v9.8h, v9.8h, v25.8h
b.ne 3f
/* Right AC coef is zero */
dup v15.2d, v10.d[1]
/* Even part: reverse the even part of the forward DCT. */
add v18.4h, v4.4h, v8.4h /* z2 + z3 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]) + DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]) */
add v22.4h, v2.4h, v6.4h /* z2 + z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) + DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]) */
sub v26.4h, v2.4h, v6.4h /* z2 - z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) - DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]) */
smull v18.4s, v18.4h, XFIX_P_0_541 /* z1l z1 = MULTIPLY(z2 + z3, FIX_0_541196100); */
sshll v22.4s, v22.4h, #(CONST_BITS) /* tmp0l tmp0 = LEFT_SHIFT(z2 + z3, CONST_BITS); */
mov v20.16b, v18.16b /* tmp3 = z1 */
sshll v26.4s, v26.4h, #(CONST_BITS) /* tmp1l tmp1 = LEFT_SHIFT(z2 - z3, CONST_BITS); */
smlal v18.4s, v8.4h, XFIX_N_1_847 /* tmp2l tmp2 = z1 + MULTIPLY(z3, -FIX_1_847759065); */
smlal v20.4s, v4.4h, XFIX_P_0_765 /* tmp3l tmp3 = z1 + MULTIPLY(z2, FIX_0_765366865); */
add v2.4s, v22.4s, v20.4s /* tmp10l tmp10 = tmp0 + tmp3; */
sub v6.4s, v22.4s, v20.4s /* tmp13l tmp13 = tmp0 - tmp3; */
add v8.4s, v26.4s, v18.4s /* tmp11l tmp11 = tmp1 + tmp2; */
sub v4.4s, v26.4s, v18.4s /* tmp12l tmp12 = tmp1 - tmp2; */
/* Odd part per figure 8; the matrix is unitary and hence its
* transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively.
*/
add v22.4h, v9.4h, v5.4h /* z3 = tmp0 + tmp2 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]) + DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]) */
add v24.4h, v7.4h, v3.4h /* z4 = tmp1 + tmp3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]) + DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]) */
add v18.4h, v9.4h, v3.4h /* z1 = tmp0 + tmp3 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]) + DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]) */
add v20.4h, v7.4h, v5.4h /* z2 = tmp1 + tmp2 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]) + DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]) */
add v26.4h, v22.4h, v24.4h /* z5 = z3 + z4 */
smull v10.4s, v9.4h, XFIX_P_0_298 /* tmp0 = MULTIPLY(tmp0, FIX_0_298631336) */
smull v12.4s, v7.4h, XFIX_P_2_053 /* tmp1 = MULTIPLY(tmp1, FIX_2_053119869) */
smull v14.4s, v5.4h, XFIX_P_3_072 /* tmp2 = MULTIPLY(tmp2, FIX_3_072711026) */
smull v16.4s, v3.4h, XFIX_P_1_501 /* tmp3 = MULTIPLY(tmp3, FIX_1_501321110) */
smull v26.4s, v26.4h, XFIX_P_1_175 /* z5l z5 = MULTIPLY(z3 + z4, FIX_1_175875602) */
smull v22.4s, v22.4h, XFIX_N_1_961 /* z3 = MULTIPLY(z3, -FIX_1_961570560) */
smull v24.4s, v24.4h, XFIX_N_0_390 /* z4 = MULTIPLY(z4, -FIX_0_390180644) */
smull v18.4s, v18.4h, XFIX_N_0_899 /* z1 = MULTIPLY(z1, -FIX_0_899976223) */
smull v20.4s, v20.4h, XFIX_N_2_562 /* z2 = MULTIPLY(z2, -FIX_2_562915447) */
add v22.4s, v22.4s, v26.4s /* z3 += z5 */
add v24.4s, v24.4s, v26.4s /* z4 += z5 */
add v10.4s, v10.4s, v18.4s /* tmp0 += z1 */
add v12.4s, v12.4s, v20.4s /* tmp1 += z2 */
add v14.4s, v14.4s, v20.4s /* tmp2 += z2 */
add v16.4s, v16.4s, v18.4s /* tmp3 += z1 */
add v10.4s, v10.4s, v22.4s /* tmp0 += z3 */
add v12.4s, v12.4s, v24.4s /* tmp1 += z4 */
add v16.4s, v16.4s, v24.4s /* tmp3 += z4 */
add v14.4s, v14.4s, v22.4s /* tmp2 += z3 */
/* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */
add v18.4s, v2.4s, v16.4s /* tmp10 + tmp3 */
sub v20.4s, v2.4s, v16.4s /* tmp10 - tmp3 */
add v22.4s, v8.4s, v14.4s /* tmp11 + tmp2 */
sub v24.4s, v8.4s, v14.4s /* tmp11 - tmp2 */
add v26.4s, v4.4s, v12.4s /* tmp12 + tmp1 */
sub v28.4s, v4.4s, v12.4s /* tmp12 - tmp1 */
add v14.4s, v6.4s, v10.4s /* tmp13 + tmp0 */
sub v16.4s, v6.4s, v10.4s /* tmp13 - tmp0 */
rshrn v2.4h, v18.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*0] = (int)DESCALE(tmp10 + tmp3, CONST_BITS-PASS1_BITS) */
rshrn v3.4h, v22.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*1] = (int)DESCALE(tmp11 + tmp2, CONST_BITS-PASS1_BITS) */
rshrn v4.4h, v26.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*2] = (int)DESCALE(tmp12 + tmp1, CONST_BITS-PASS1_BITS) */
rshrn v5.4h, v14.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*3] = (int)DESCALE(tmp13 + tmp0, CONST_BITS-PASS1_BITS) */
rshrn2 v2.8h, v16.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*4] = (int)DESCALE(tmp13 - tmp0, CONST_BITS-PASS1_BITS) */
rshrn2 v3.8h, v28.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*5] = (int)DESCALE(tmp12 - tmp1, CONST_BITS-PASS1_BITS) */
rshrn2 v4.8h, v24.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*6] = (int)DESCALE(tmp11 - tmp2, CONST_BITS-PASS1_BITS) */
rshrn2 v5.8h, v20.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*7] = (int)DESCALE(tmp10 - tmp3, CONST_BITS-PASS1_BITS) */
mov v6.16b, v15.16b
mov v7.16b, v15.16b
mov v8.16b, v15.16b
mov v9.16b, v15.16b
b 1b
.balign 16
3:
cbnz TMP4, 4f
/* Left AC coef is zero */
dup v14.2d, v10.d[0]
/* Even part: reverse the even part of the forward DCT. */
add v18.8h, v4.8h, v8.8h /* z2 + z3 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]) + DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]) */
add v22.8h, v2.8h, v6.8h /* z2 + z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) + DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]) */
smull2 v19.4s, v18.8h, XFIX_P_0_541 /* z1h z1 = MULTIPLY(z2 + z3, FIX_0_541196100); */
sub v26.8h, v2.8h, v6.8h /* z2 - z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) - DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]) */
sshll2 v23.4s, v22.8h, #(CONST_BITS) /* tmp0h tmp0 = LEFT_SHIFT(z2 + z3, CONST_BITS); */
mov v21.16b, v19.16b /* tmp3 = z1 */
smlal2 v19.4s, v8.8h, XFIX_N_1_847 /* tmp2h tmp2 = z1 + MULTIPLY(z3, -FIX_1_847759065); */
sshll2 v27.4s, v26.8h, #(CONST_BITS) /* tmp1h tmp1 = LEFT_SHIFT(z2 - z3, CONST_BITS); */
smlal2 v21.4s, v4.8h, XFIX_P_0_765 /* tmp3h tmp3 = z1 + MULTIPLY(z2, FIX_0_765366865); */
add v28.4s, v23.4s, v21.4s /* tmp10h tmp10 = tmp0 + tmp3; */
sub v31.4s, v23.4s, v21.4s /* tmp13h tmp13 = tmp0 - tmp3; */
add v29.4s, v27.4s, v19.4s /* tmp11h tmp11 = tmp1 + tmp2; */
sub v30.4s, v27.4s, v19.4s /* tmp12h tmp12 = tmp1 - tmp2; */
/* Odd part per figure 8; the matrix is unitary and hence its
* transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively.
*/
add v22.8h, v9.8h, v5.8h /* z3 = tmp0 + tmp2 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]) + DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]) */
add v24.8h, v7.8h, v3.8h /* z4 = tmp1 + tmp3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]) + DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]) */
add v18.8h, v9.8h, v3.8h /* z1 = tmp0 + tmp3 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]) + DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]) */
add v20.8h, v7.8h, v5.8h /* z2 = tmp1 + tmp2 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]) + DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]) */
add v26.8h, v22.8h, v24.8h /* z5 = z3 + z4 */
smull2 v11.4s, v9.8h, XFIX_P_0_298 /* tmp0 = MULTIPLY(tmp0, FIX_0_298631336) */
smull2 v13.4s, v7.8h, XFIX_P_2_053 /* tmp1 = MULTIPLY(tmp1, FIX_2_053119869) */
smull2 v15.4s, v5.8h, XFIX_P_3_072 /* tmp2 = MULTIPLY(tmp2, FIX_3_072711026) */
smull2 v17.4s, v3.8h, XFIX_P_1_501 /* tmp3 = MULTIPLY(tmp3, FIX_1_501321110) */
smull2 v27.4s, v26.8h, XFIX_P_1_175 /* z5h z5 = MULTIPLY(z3 + z4, FIX_1_175875602) */
smull2 v23.4s, v22.8h, XFIX_N_1_961 /* z3 = MULTIPLY(z3, -FIX_1_961570560) */
smull2 v25.4s, v24.8h, XFIX_N_0_390 /* z4 = MULTIPLY(z4, -FIX_0_390180644) */
smull2 v19.4s, v18.8h, XFIX_N_0_899 /* z1 = MULTIPLY(z1, -FIX_0_899976223) */
smull2 v21.4s, v20.8h, XFIX_N_2_562 /* z2 = MULTIPLY(z2, -FIX_2_562915447) */
add v23.4s, v23.4s, v27.4s /* z3 += z5 */
add v22.4s, v22.4s, v26.4s /* z3 += z5 */
add v25.4s, v25.4s, v27.4s /* z4 += z5 */
add v24.4s, v24.4s, v26.4s /* z4 += z5 */
add v11.4s, v11.4s, v19.4s /* tmp0 += z1 */
add v13.4s, v13.4s, v21.4s /* tmp1 += z2 */
add v15.4s, v15.4s, v21.4s /* tmp2 += z2 */
add v17.4s, v17.4s, v19.4s /* tmp3 += z1 */
add v11.4s, v11.4s, v23.4s /* tmp0 += z3 */
add v13.4s, v13.4s, v25.4s /* tmp1 += z4 */
add v17.4s, v17.4s, v25.4s /* tmp3 += z4 */
add v15.4s, v15.4s, v23.4s /* tmp2 += z3 */
/* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */
add v19.4s, v28.4s, v17.4s /* tmp10 + tmp3 */
sub v21.4s, v28.4s, v17.4s /* tmp10 - tmp3 */
add v23.4s, v29.4s, v15.4s /* tmp11 + tmp2 */
sub v25.4s, v29.4s, v15.4s /* tmp11 - tmp2 */
add v27.4s, v30.4s, v13.4s /* tmp12 + tmp1 */
sub v29.4s, v30.4s, v13.4s /* tmp12 - tmp1 */
add v15.4s, v31.4s, v11.4s /* tmp13 + tmp0 */
sub v17.4s, v31.4s, v11.4s /* tmp13 - tmp0 */
mov v2.16b, v14.16b
mov v3.16b, v14.16b
mov v4.16b, v14.16b
mov v5.16b, v14.16b
rshrn v6.4h, v19.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*0] = (int)DESCALE(tmp10 + tmp3, CONST_BITS-PASS1_BITS) */
rshrn v7.4h, v23.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*1] = (int)DESCALE(tmp11 + tmp2, CONST_BITS-PASS1_BITS) */
rshrn v8.4h, v27.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*2] = (int)DESCALE(tmp12 + tmp1, CONST_BITS-PASS1_BITS) */
rshrn v9.4h, v15.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*3] = (int)DESCALE(tmp13 + tmp0, CONST_BITS-PASS1_BITS) */
rshrn2 v6.8h, v17.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*4] = (int)DESCALE(tmp13 - tmp0, CONST_BITS-PASS1_BITS) */
rshrn2 v7.8h, v29.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*5] = (int)DESCALE(tmp12 - tmp1, CONST_BITS-PASS1_BITS) */
rshrn2 v8.8h, v25.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*6] = (int)DESCALE(tmp11 - tmp2, CONST_BITS-PASS1_BITS) */
rshrn2 v9.8h, v21.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*7] = (int)DESCALE(tmp10 - tmp3, CONST_BITS-PASS1_BITS) */
b 1b
.balign 16
4:
/* "No" AC coef is zero */
/* Even part: reverse the even part of the forward DCT. */
add v18.8h, v4.8h, v8.8h /* z2 + z3 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]) + DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]) */
add v22.8h, v2.8h, v6.8h /* z2 + z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) + DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]) */
smull2 v19.4s, v18.8h, XFIX_P_0_541 /* z1h z1 = MULTIPLY(z2 + z3, FIX_0_541196100); */
sub v26.8h, v2.8h, v6.8h /* z2 - z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) - DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]) */
smull v18.4s, v18.4h, XFIX_P_0_541 /* z1l z1 = MULTIPLY(z2 + z3, FIX_0_541196100); */
sshll2 v23.4s, v22.8h, #(CONST_BITS) /* tmp0h tmp0 = LEFT_SHIFT(z2 + z3, CONST_BITS); */
mov v21.16b, v19.16b /* tmp3 = z1 */
mov v20.16b, v18.16b /* tmp3 = z1 */
smlal2 v19.4s, v8.8h, XFIX_N_1_847 /* tmp2h tmp2 = z1 + MULTIPLY(z3, -FIX_1_847759065); */
smlal v18.4s, v8.4h, XFIX_N_1_847 /* tmp2l tmp2 = z1 + MULTIPLY(z3, -FIX_1_847759065); */
sshll2 v27.4s, v26.8h, #(CONST_BITS) /* tmp1h tmp1 = LEFT_SHIFT(z2 - z3, CONST_BITS); */
smlal2 v21.4s, v4.8h, XFIX_P_0_765 /* tmp3h tmp3 = z1 + MULTIPLY(z2, FIX_0_765366865); */
smlal v20.4s, v4.4h, XFIX_P_0_765 /* tmp3l tmp3 = z1 + MULTIPLY(z2, FIX_0_765366865); */
sshll v22.4s, v22.4h, #(CONST_BITS) /* tmp0l tmp0 = LEFT_SHIFT(z2 + z3, CONST_BITS); */
sshll v26.4s, v26.4h, #(CONST_BITS) /* tmp1l tmp1 = LEFT_SHIFT(z2 - z3, CONST_BITS); */
add v2.4s, v22.4s, v20.4s /* tmp10l tmp10 = tmp0 + tmp3; */
sub v6.4s, v22.4s, v20.4s /* tmp13l tmp13 = tmp0 - tmp3; */
add v8.4s, v26.4s, v18.4s /* tmp11l tmp11 = tmp1 + tmp2; */
sub v4.4s, v26.4s, v18.4s /* tmp12l tmp12 = tmp1 - tmp2; */
add v28.4s, v23.4s, v21.4s /* tmp10h tmp10 = tmp0 + tmp3; */
sub v31.4s, v23.4s, v21.4s /* tmp13h tmp13 = tmp0 - tmp3; */
add v29.4s, v27.4s, v19.4s /* tmp11h tmp11 = tmp1 + tmp2; */
sub v30.4s, v27.4s, v19.4s /* tmp12h tmp12 = tmp1 - tmp2; */
/* Odd part per figure 8; the matrix is unitary and hence its
* transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively.
*/
add v22.8h, v9.8h, v5.8h /* z3 = tmp0 + tmp2 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]) + DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]) */
add v24.8h, v7.8h, v3.8h /* z4 = tmp1 + tmp3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]) + DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]) */
add v18.8h, v9.8h, v3.8h /* z1 = tmp0 + tmp3 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]) + DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]) */
add v20.8h, v7.8h, v5.8h /* z2 = tmp1 + tmp2 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]) + DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]) */
add v26.8h, v22.8h, v24.8h /* z5 = z3 + z4 */
smull2 v11.4s, v9.8h, XFIX_P_0_298 /* tmp0 = MULTIPLY(tmp0, FIX_0_298631336) */
smull2 v13.4s, v7.8h, XFIX_P_2_053 /* tmp1 = MULTIPLY(tmp1, FIX_2_053119869) */
smull2 v15.4s, v5.8h, XFIX_P_3_072 /* tmp2 = MULTIPLY(tmp2, FIX_3_072711026) */
smull2 v17.4s, v3.8h, XFIX_P_1_501 /* tmp3 = MULTIPLY(tmp3, FIX_1_501321110) */
smull2 v27.4s, v26.8h, XFIX_P_1_175 /* z5h z5 = MULTIPLY(z3 + z4, FIX_1_175875602) */
smull2 v23.4s, v22.8h, XFIX_N_1_961 /* z3 = MULTIPLY(z3, -FIX_1_961570560) */
smull2 v25.4s, v24.8h, XFIX_N_0_390 /* z4 = MULTIPLY(z4, -FIX_0_390180644) */
smull2 v19.4s, v18.8h, XFIX_N_0_899 /* z1 = MULTIPLY(z1, -FIX_0_899976223) */
smull2 v21.4s, v20.8h, XFIX_N_2_562 /* z2 = MULTIPLY(z2, -FIX_2_562915447) */
smull v10.4s, v9.4h, XFIX_P_0_298 /* tmp0 = MULTIPLY(tmp0, FIX_0_298631336) */
smull v12.4s, v7.4h, XFIX_P_2_053 /* tmp1 = MULTIPLY(tmp1, FIX_2_053119869) */
smull v14.4s, v5.4h, XFIX_P_3_072 /* tmp2 = MULTIPLY(tmp2, FIX_3_072711026) */
smull v16.4s, v3.4h, XFIX_P_1_501 /* tmp3 = MULTIPLY(tmp3, FIX_1_501321110) */
smull v26.4s, v26.4h, XFIX_P_1_175 /* z5l z5 = MULTIPLY(z3 + z4, FIX_1_175875602) */
smull v22.4s, v22.4h, XFIX_N_1_961 /* z3 = MULTIPLY(z3, -FIX_1_961570560) */
smull v24.4s, v24.4h, XFIX_N_0_390 /* z4 = MULTIPLY(z4, -FIX_0_390180644) */
smull v18.4s, v18.4h, XFIX_N_0_899 /* z1 = MULTIPLY(z1, -FIX_0_899976223) */
smull v20.4s, v20.4h, XFIX_N_2_562 /* z2 = MULTIPLY(z2, -FIX_2_562915447) */
add v23.4s, v23.4s, v27.4s /* z3 += z5 */
add v22.4s, v22.4s, v26.4s /* z3 += z5 */
add v25.4s, v25.4s, v27.4s /* z4 += z5 */
add v24.4s, v24.4s, v26.4s /* z4 += z5 */
add v11.4s, v11.4s, v19.4s /* tmp0 += z1 */
add v10.4s, v10.4s, v18.4s /* tmp0 += z1 */
add v13.4s, v13.4s, v21.4s /* tmp1 += z2 */
add v12.4s, v12.4s, v20.4s /* tmp1 += z2 */
add v15.4s, v15.4s, v21.4s /* tmp2 += z2 */
add v14.4s, v14.4s, v20.4s /* tmp2 += z2 */
add v17.4s, v17.4s, v19.4s /* tmp3 += z1 */
add v16.4s, v16.4s, v18.4s /* tmp3 += z1 */
add v11.4s, v11.4s, v23.4s /* tmp0 += z3 */
add v10.4s, v10.4s, v22.4s /* tmp0 += z3 */
add v13.4s, v13.4s, v25.4s /* tmp1 += z4 */
add v12.4s, v12.4s, v24.4s /* tmp1 += z4 */
add v17.4s, v17.4s, v25.4s /* tmp3 += z4 */
add v16.4s, v16.4s, v24.4s /* tmp3 += z4 */
add v15.4s, v15.4s, v23.4s /* tmp2 += z3 */
add v14.4s, v14.4s, v22.4s /* tmp2 += z3 */
/* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */
add v18.4s, v2.4s, v16.4s /* tmp10 + tmp3 */
add v19.4s, v28.4s, v17.4s /* tmp10 + tmp3 */
sub v20.4s, v2.4s, v16.4s /* tmp10 - tmp3 */
sub v21.4s, v28.4s, v17.4s /* tmp10 - tmp3 */
add v22.4s, v8.4s, v14.4s /* tmp11 + tmp2 */
add v23.4s, v29.4s, v15.4s /* tmp11 + tmp2 */
sub v24.4s, v8.4s, v14.4s /* tmp11 - tmp2 */
sub v25.4s, v29.4s, v15.4s /* tmp11 - tmp2 */
add v26.4s, v4.4s, v12.4s /* tmp12 + tmp1 */
add v27.4s, v30.4s, v13.4s /* tmp12 + tmp1 */
sub v28.4s, v4.4s, v12.4s /* tmp12 - tmp1 */
sub v29.4s, v30.4s, v13.4s /* tmp12 - tmp1 */
add v14.4s, v6.4s, v10.4s /* tmp13 + tmp0 */
add v15.4s, v31.4s, v11.4s /* tmp13 + tmp0 */
sub v16.4s, v6.4s, v10.4s /* tmp13 - tmp0 */
sub v17.4s, v31.4s, v11.4s /* tmp13 - tmp0 */
rshrn v2.4h, v18.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*0] = (int)DESCALE(tmp10 + tmp3, CONST_BITS-PASS1_BITS) */
rshrn v3.4h, v22.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*1] = (int)DESCALE(tmp11 + tmp2, CONST_BITS-PASS1_BITS) */
rshrn v4.4h, v26.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*2] = (int)DESCALE(tmp12 + tmp1, CONST_BITS-PASS1_BITS) */
rshrn v5.4h, v14.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*3] = (int)DESCALE(tmp13 + tmp0, CONST_BITS-PASS1_BITS) */
rshrn v6.4h, v19.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*0] = (int)DESCALE(tmp10 + tmp3, CONST_BITS-PASS1_BITS) */
rshrn v7.4h, v23.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*1] = (int)DESCALE(tmp11 + tmp2, CONST_BITS-PASS1_BITS) */
rshrn v8.4h, v27.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*2] = (int)DESCALE(tmp12 + tmp1, CONST_BITS-PASS1_BITS) */
rshrn v9.4h, v15.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*3] = (int)DESCALE(tmp13 + tmp0, CONST_BITS-PASS1_BITS) */
rshrn2 v2.8h, v16.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*4] = (int)DESCALE(tmp13 - tmp0, CONST_BITS-PASS1_BITS) */
rshrn2 v3.8h, v28.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*5] = (int)DESCALE(tmp12 - tmp1, CONST_BITS-PASS1_BITS) */
rshrn2 v4.8h, v24.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*6] = (int)DESCALE(tmp11 - tmp2, CONST_BITS-PASS1_BITS) */
rshrn2 v5.8h, v20.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*7] = (int)DESCALE(tmp10 - tmp3, CONST_BITS-PASS1_BITS) */
rshrn2 v6.8h, v17.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*4] = (int)DESCALE(tmp13 - tmp0, CONST_BITS-PASS1_BITS) */
rshrn2 v7.8h, v29.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*5] = (int)DESCALE(tmp12 - tmp1, CONST_BITS-PASS1_BITS) */
rshrn2 v8.8h, v25.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*6] = (int)DESCALE(tmp11 - tmp2, CONST_BITS-PASS1_BITS) */
rshrn2 v9.8h, v21.4s, #(CONST_BITS - PASS1_BITS) /* wsptr[DCTSIZE*7] = (int)DESCALE(tmp10 - tmp3, CONST_BITS-PASS1_BITS) */
b 1b
.unreq DCT_TABLE
.unreq COEF_BLOCK
.unreq OUTPUT_BUF
.unreq OUTPUT_COL
.unreq TMP1
.unreq TMP2
.unreq TMP3
.unreq TMP4
.unreq TMP5
.unreq TMP6
.unreq TMP7
.unreq TMP8
#undef CENTERJSAMPLE
#undef CONST_BITS
#undef PASS1_BITS
#undef XFIX_P_0_298
#undef XFIX_N_0_390
#undef XFIX_P_0_541
#undef XFIX_P_0_765
#undef XFIX_N_0_899
#undef XFIX_P_1_175
#undef XFIX_P_1_501
#undef XFIX_N_1_847
#undef XFIX_N_1_961
#undef XFIX_P_2_053
#undef XFIX_N_2_562
#undef XFIX_P_3_072
/*****************************************************************************/
/*
* jsimd_ycc_extrgb_convert_neon
* jsimd_ycc_extbgr_convert_neon
* jsimd_ycc_extrgbx_convert_neon
* jsimd_ycc_extbgrx_convert_neon
* jsimd_ycc_extxbgr_convert_neon
* jsimd_ycc_extxrgb_convert_neon
*
* Colorspace conversion YCbCr -> RGB
*/
.macro do_load size
.if \size == 8
ld1 {v4.8b}, [U], 8
ld1 {v5.8b}, [V], 8
ld1 {v0.8b}, [Y], 8
prfm pldl1keep, [U, #64]
prfm pldl1keep, [V, #64]
prfm pldl1keep, [Y, #64]
.elseif \size == 4
ld1 {v4.b}[0], [U], 1
ld1 {v4.b}[1], [U], 1
ld1 {v4.b}[2], [U], 1
ld1 {v4.b}[3], [U], 1
ld1 {v5.b}[0], [V], 1
ld1 {v5.b}[1], [V], 1
ld1 {v5.b}[2], [V], 1
ld1 {v5.b}[3], [V], 1
ld1 {v0.b}[0], [Y], 1
ld1 {v0.b}[1], [Y], 1
ld1 {v0.b}[2], [Y], 1
ld1 {v0.b}[3], [Y], 1
.elseif \size == 2
ld1 {v4.b}[4], [U], 1
ld1 {v4.b}[5], [U], 1
ld1 {v5.b}[4], [V], 1
ld1 {v5.b}[5], [V], 1
ld1 {v0.b}[4], [Y], 1
ld1 {v0.b}[5], [Y], 1
.elseif \size == 1
ld1 {v4.b}[6], [U], 1
ld1 {v5.b}[6], [V], 1
ld1 {v0.b}[6], [Y], 1
.else
.error unsupported macroblock size
.endif
.endm
.macro do_store bpp, size, fast_st3
.if \bpp == 24
.if \size == 8
.if \fast_st3 == 1
st3 {v10.8b, v11.8b, v12.8b}, [RGB], 24
.else
st1 {v10.b}[0], [RGB], #1
st1 {v11.b}[0], [RGB], #1
st1 {v12.b}[0], [RGB], #1
st1 {v10.b}[1], [RGB], #1
st1 {v11.b}[1], [RGB], #1
st1 {v12.b}[1], [RGB], #1
st1 {v10.b}[2], [RGB], #1
st1 {v11.b}[2], [RGB], #1
st1 {v12.b}[2], [RGB], #1
st1 {v10.b}[3], [RGB], #1
st1 {v11.b}[3], [RGB], #1
st1 {v12.b}[3], [RGB], #1
st1 {v10.b}[4], [RGB], #1
st1 {v11.b}[4], [RGB], #1
st1 {v12.b}[4], [RGB], #1
st1 {v10.b}[5], [RGB], #1
st1 {v11.b}[5], [RGB], #1
st1 {v12.b}[5], [RGB], #1
st1 {v10.b}[6], [RGB], #1
st1 {v11.b}[6], [RGB], #1
st1 {v12.b}[6], [RGB], #1
st1 {v10.b}[7], [RGB], #1
st1 {v11.b}[7], [RGB], #1
st1 {v12.b}[7], [RGB], #1
.endif
.elseif \size == 4
st3 {v10.b, v11.b, v12.b}[0], [RGB], 3
st3 {v10.b, v11.b, v12.b}[1], [RGB], 3
st3 {v10.b, v11.b, v12.b}[2], [RGB], 3
st3 {v10.b, v11.b, v12.b}[3], [RGB], 3
.elseif \size == 2
st3 {v10.b, v11.b, v12.b}[4], [RGB], 3
st3 {v10.b, v11.b, v12.b}[5], [RGB], 3
.elseif \size == 1
st3 {v10.b, v11.b, v12.b}[6], [RGB], 3
.else
.error unsupported macroblock size
.endif
.elseif \bpp == 32
.if \size == 8
st4 {v10.8b, v11.8b, v12.8b, v13.8b}, [RGB], 32
.elseif \size == 4
st4 {v10.b, v11.b, v12.b, v13.b}[0], [RGB], 4
st4 {v10.b, v11.b, v12.b, v13.b}[1], [RGB], 4
st4 {v10.b, v11.b, v12.b, v13.b}[2], [RGB], 4
st4 {v10.b, v11.b, v12.b, v13.b}[3], [RGB], 4
.elseif \size == 2
st4 {v10.b, v11.b, v12.b, v13.b}[4], [RGB], 4
st4 {v10.b, v11.b, v12.b, v13.b}[5], [RGB], 4
.elseif \size == 1
st4 {v10.b, v11.b, v12.b, v13.b}[6], [RGB], 4
.else
.error unsupported macroblock size
.endif
.elseif \bpp == 16
.if \size == 8
st1 {v25.8h}, [RGB], 16
.elseif \size == 4
st1 {v25.4h}, [RGB], 8
.elseif \size == 2
st1 {v25.h}[4], [RGB], 2
st1 {v25.h}[5], [RGB], 2
.elseif \size == 1
st1 {v25.h}[6], [RGB], 2
.else
.error unsupported macroblock size
.endif
.else
.error unsupported bpp
.endif
.endm
.macro generate_jsimd_ycc_rgb_convert_neon colorid, bpp, r_offs, rsize, \
g_offs, gsize, b_offs, bsize, \
defsize, fast_st3
/*
* 2-stage pipelined YCbCr->RGB conversion
*/
.macro do_yuv_to_rgb_stage1
uaddw v6.8h, v2.8h, v4.8b /* q3 = u - 128 */
uaddw v8.8h, v2.8h, v5.8b /* q2 = v - 128 */
smull v20.4s, v6.4h, v1.h[1] /* multiply by -11277 */
smlal v20.4s, v8.4h, v1.h[2] /* multiply by -23401 */
smull2 v22.4s, v6.8h, v1.h[1] /* multiply by -11277 */
smlal2 v22.4s, v8.8h, v1.h[2] /* multiply by -23401 */
smull v24.4s, v8.4h, v1.h[0] /* multiply by 22971 */
smull2 v26.4s, v8.8h, v1.h[0] /* multiply by 22971 */
smull v28.4s, v6.4h, v1.h[3] /* multiply by 29033 */
smull2 v30.4s, v6.8h, v1.h[3] /* multiply by 29033 */
.endm
.macro do_yuv_to_rgb_stage2
rshrn v20.4h, v20.4s, #15
rshrn2 v20.8h, v22.4s, #15
rshrn v24.4h, v24.4s, #14
rshrn2 v24.8h, v26.4s, #14
rshrn v28.4h, v28.4s, #14
rshrn2 v28.8h, v30.4s, #14
uaddw v20.8h, v20.8h, v0.8b
uaddw v24.8h, v24.8h, v0.8b
uaddw v28.8h, v28.8h, v0.8b
.if \bpp != 16
sqxtun v1\g_offs\defsize, v20.8h
sqxtun v1\r_offs\defsize, v24.8h
sqxtun v1\b_offs\defsize, v28.8h
.else
sqshlu v21.8h, v20.8h, #8
sqshlu v25.8h, v24.8h, #8
sqshlu v29.8h, v28.8h, #8
sri v25.8h, v21.8h, #5
sri v25.8h, v29.8h, #11
.endif
.endm
.macro do_yuv_to_rgb_stage2_store_load_stage1 fast_st3
rshrn v20.4h, v20.4s, #15
rshrn v24.4h, v24.4s, #14
rshrn v28.4h, v28.4s, #14
ld1 {v4.8b}, [U], 8
rshrn2 v20.8h, v22.4s, #15
rshrn2 v24.8h, v26.4s, #14
rshrn2 v28.8h, v30.4s, #14
ld1 {v5.8b}, [V], 8
uaddw v20.8h, v20.8h, v0.8b
uaddw v24.8h, v24.8h, v0.8b
uaddw v28.8h, v28.8h, v0.8b
.if \bpp != 16 /**************** rgb24/rgb32 ******************************/
sqxtun v1\g_offs\defsize, v20.8h
ld1 {v0.8b}, [Y], 8
sqxtun v1\r_offs\defsize, v24.8h
prfm pldl1keep, [U, #64]
prfm pldl1keep, [V, #64]
prfm pldl1keep, [Y, #64]
sqxtun v1\b_offs\defsize, v28.8h
uaddw v6.8h, v2.8h, v4.8b /* v6.16b = u - 128 */
uaddw v8.8h, v2.8h, v5.8b /* q2 = v - 128 */
smull v20.4s, v6.4h, v1.h[1] /* multiply by -11277 */
smlal v20.4s, v8.4h, v1.h[2] /* multiply by -23401 */
smull2 v22.4s, v6.8h, v1.h[1] /* multiply by -11277 */
smlal2 v22.4s, v8.8h, v1.h[2] /* multiply by -23401 */
smull v24.4s, v8.4h, v1.h[0] /* multiply by 22971 */
smull2 v26.4s, v8.8h, v1.h[0] /* multiply by 22971 */
.else /**************************** rgb565 ********************************/
sqshlu v21.8h, v20.8h, #8
sqshlu v25.8h, v24.8h, #8
sqshlu v29.8h, v28.8h, #8
uaddw v6.8h, v2.8h, v4.8b /* v6.16b = u - 128 */
uaddw v8.8h, v2.8h, v5.8b /* q2 = v - 128 */
ld1 {v0.8b}, [Y], 8
smull v20.4s, v6.4h, v1.h[1] /* multiply by -11277 */
smlal v20.4s, v8.4h, v1.h[2] /* multiply by -23401 */
smull2 v22.4s, v6.8h, v1.h[1] /* multiply by -11277 */
smlal2 v22.4s, v8.8h, v1.h[2] /* multiply by -23401 */
sri v25.8h, v21.8h, #5
smull v24.4s, v8.4h, v1.h[0] /* multiply by 22971 */
smull2 v26.4s, v8.8h, v1.h[0] /* multiply by 22971 */
prfm pldl1keep, [U, #64]
prfm pldl1keep, [V, #64]
prfm pldl1keep, [Y, #64]
sri v25.8h, v29.8h, #11
.endif
do_store \bpp, 8, \fast_st3
smull v28.4s, v6.4h, v1.h[3] /* multiply by 29033 */
smull2 v30.4s, v6.8h, v1.h[3] /* multiply by 29033 */
.endm
.macro do_yuv_to_rgb
do_yuv_to_rgb_stage1
do_yuv_to_rgb_stage2
.endm
.if \fast_st3 == 1
asm_function jsimd_ycc_\colorid\()_convert_neon
.else
asm_function jsimd_ycc_\colorid\()_convert_neon_slowst3
.endif
OUTPUT_WIDTH .req w0
INPUT_BUF .req x1
INPUT_ROW .req w2
OUTPUT_BUF .req x3
NUM_ROWS .req w4
INPUT_BUF0 .req x5
INPUT_BUF1 .req x6
INPUT_BUF2 .req x1
RGB .req x7
Y .req x9
U .req x10
V .req x11
N .req w15
sub sp, sp, 64
mov x9, sp
/* Load constants to d1, d2, d3 (v0.4h is just used for padding) */
get_symbol_loc x15, Ljsimd_ycc_rgb_neon_consts
/* Save Neon registers */
st1 {v8.8b, v9.8b, v10.8b, v11.8b}, [x9], 32
st1 {v12.8b, v13.8b, v14.8b, v15.8b}, [x9], 32
ld1 {v0.4h, v1.4h}, [x15], 16
ld1 {v2.8h}, [x15]
ldr INPUT_BUF0, [INPUT_BUF]
ldr INPUT_BUF1, [INPUT_BUF, #8]
ldr INPUT_BUF2, [INPUT_BUF, #16]
.unreq INPUT_BUF
/* Initially set v10, v11.4h, v12.8b, d13 to 0xFF */
movi v10.16b, #255
movi v13.16b, #255
/* Outer loop over scanlines */
cmp NUM_ROWS, #1
b.lt 9f
0:
ldr Y, [INPUT_BUF0, INPUT_ROW, uxtw #3]
ldr U, [INPUT_BUF1, INPUT_ROW, uxtw #3]
mov N, OUTPUT_WIDTH
ldr V, [INPUT_BUF2, INPUT_ROW, uxtw #3]
add INPUT_ROW, INPUT_ROW, #1
ldr RGB, [OUTPUT_BUF], #8
/* Inner loop over pixels */
subs N, N, #8
b.lt 3f
do_load 8
do_yuv_to_rgb_stage1
subs N, N, #8
b.lt 2f
1:
do_yuv_to_rgb_stage2_store_load_stage1 \fast_st3
subs N, N, #8
b.ge 1b
2:
do_yuv_to_rgb_stage2
do_store \bpp, 8, \fast_st3
tst N, #7
b.eq 8f
3:
tst N, #4
b.eq 3f
do_load 4
3:
tst N, #2
b.eq 4f
do_load 2
4:
tst N, #1
b.eq 5f
do_load 1
5:
do_yuv_to_rgb
tst N, #4
b.eq 6f
do_store \bpp, 4, \fast_st3
6:
tst N, #2
b.eq 7f
do_store \bpp, 2, \fast_st3
7:
tst N, #1
b.eq 8f
do_store \bpp, 1, \fast_st3
8:
subs NUM_ROWS, NUM_ROWS, #1
b.gt 0b
9:
/* Restore all registers and return */
ld1 {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
ld1 {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
br x30
.unreq OUTPUT_WIDTH
.unreq INPUT_ROW
.unreq OUTPUT_BUF
.unreq NUM_ROWS
.unreq INPUT_BUF0
.unreq INPUT_BUF1
.unreq INPUT_BUF2
.unreq RGB
.unreq Y
.unreq U
.unreq V
.unreq N
.purgem do_yuv_to_rgb
.purgem do_yuv_to_rgb_stage1
.purgem do_yuv_to_rgb_stage2
.purgem do_yuv_to_rgb_stage2_store_load_stage1
.endm
/*--------------------------------- id ----- bpp R rsize G gsize B bsize defsize fast_st3*/
generate_jsimd_ycc_rgb_convert_neon extrgb, 24, 0, .4h, 1, .4h, 2, .4h, .8b, 1
generate_jsimd_ycc_rgb_convert_neon extbgr, 24, 2, .4h, 1, .4h, 0, .4h, .8b, 1
generate_jsimd_ycc_rgb_convert_neon extrgbx, 32, 0, .4h, 1, .4h, 2, .4h, .8b, 1
generate_jsimd_ycc_rgb_convert_neon extbgrx, 32, 2, .4h, 1, .4h, 0, .4h, .8b, 1
generate_jsimd_ycc_rgb_convert_neon extxbgr, 32, 3, .4h, 2, .4h, 1, .4h, .8b, 1
generate_jsimd_ycc_rgb_convert_neon extxrgb, 32, 1, .4h, 2, .4h, 3, .4h, .8b, 1
generate_jsimd_ycc_rgb_convert_neon rgb565, 16, 0, .4h, 0, .4h, 0, .4h, .8b, 1
generate_jsimd_ycc_rgb_convert_neon extrgb, 24, 0, .4h, 1, .4h, 2, .4h, .8b, 0
generate_jsimd_ycc_rgb_convert_neon extbgr, 24, 2, .4h, 1, .4h, 0, .4h, .8b, 0
.purgem do_load
.purgem do_store
/*****************************************************************************/
/*
* jsimd_extrgb_ycc_convert_neon
* jsimd_extbgr_ycc_convert_neon
* jsimd_extrgbx_ycc_convert_neon
* jsimd_extbgrx_ycc_convert_neon
* jsimd_extxbgr_ycc_convert_neon
* jsimd_extxrgb_ycc_convert_neon
*
* Colorspace conversion RGB -> YCbCr
*/
.macro do_store size
.if \size == 8
st1 {v20.8b}, [Y], #8
st1 {v21.8b}, [U], #8
st1 {v22.8b}, [V], #8
.elseif \size == 4
st1 {v20.b}[0], [Y], #1
st1 {v20.b}[1], [Y], #1
st1 {v20.b}[2], [Y], #1
st1 {v20.b}[3], [Y], #1
st1 {v21.b}[0], [U], #1
st1 {v21.b}[1], [U], #1
st1 {v21.b}[2], [U], #1
st1 {v21.b}[3], [U], #1
st1 {v22.b}[0], [V], #1
st1 {v22.b}[1], [V], #1
st1 {v22.b}[2], [V], #1
st1 {v22.b}[3], [V], #1
.elseif \size == 2
st1 {v20.b}[4], [Y], #1
st1 {v20.b}[5], [Y], #1
st1 {v21.b}[4], [U], #1
st1 {v21.b}[5], [U], #1
st1 {v22.b}[4], [V], #1
st1 {v22.b}[5], [V], #1
.elseif \size == 1
st1 {v20.b}[6], [Y], #1
st1 {v21.b}[6], [U], #1
st1 {v22.b}[6], [V], #1
.else
.error unsupported macroblock size
.endif
.endm
.macro do_load bpp, size, fast_ld3
.if \bpp == 24
.if \size == 8
.if \fast_ld3 == 1
ld3 {v10.8b, v11.8b, v12.8b}, [RGB], #24
.else
ld1 {v10.b}[0], [RGB], #1
ld1 {v11.b}[0], [RGB], #1
ld1 {v12.b}[0], [RGB], #1
ld1 {v10.b}[1], [RGB], #1
ld1 {v11.b}[1], [RGB], #1
ld1 {v12.b}[1], [RGB], #1
ld1 {v10.b}[2], [RGB], #1
ld1 {v11.b}[2], [RGB], #1
ld1 {v12.b}[2], [RGB], #1
ld1 {v10.b}[3], [RGB], #1
ld1 {v11.b}[3], [RGB], #1
ld1 {v12.b}[3], [RGB], #1
ld1 {v10.b}[4], [RGB], #1
ld1 {v11.b}[4], [RGB], #1
ld1 {v12.b}[4], [RGB], #1
ld1 {v10.b}[5], [RGB], #1
ld1 {v11.b}[5], [RGB], #1
ld1 {v12.b}[5], [RGB], #1
ld1 {v10.b}[6], [RGB], #1
ld1 {v11.b}[6], [RGB], #1
ld1 {v12.b}[6], [RGB], #1
ld1 {v10.b}[7], [RGB], #1
ld1 {v11.b}[7], [RGB], #1
ld1 {v12.b}[7], [RGB], #1
.endif
prfm pldl1keep, [RGB, #128]
.elseif \size == 4
ld3 {v10.b, v11.b, v12.b}[0], [RGB], #3
ld3 {v10.b, v11.b, v12.b}[1], [RGB], #3
ld3 {v10.b, v11.b, v12.b}[2], [RGB], #3
ld3 {v10.b, v11.b, v12.b}[3], [RGB], #3
.elseif \size == 2
ld3 {v10.b, v11.b, v12.b}[4], [RGB], #3
ld3 {v10.b, v11.b, v12.b}[5], [RGB], #3
.elseif \size == 1
ld3 {v10.b, v11.b, v12.b}[6], [RGB], #3
.else
.error unsupported macroblock size
.endif
.elseif \bpp == 32
.if \size == 8
ld4 {v10.8b, v11.8b, v12.8b, v13.8b}, [RGB], #32
prfm pldl1keep, [RGB, #128]
.elseif \size == 4
ld4 {v10.b, v11.b, v12.b, v13.b}[0], [RGB], #4
ld4 {v10.b, v11.b, v12.b, v13.b}[1], [RGB], #4
ld4 {v10.b, v11.b, v12.b, v13.b}[2], [RGB], #4
ld4 {v10.b, v11.b, v12.b, v13.b}[3], [RGB], #4
.elseif \size == 2
ld4 {v10.b, v11.b, v12.b, v13.b}[4], [RGB], #4
ld4 {v10.b, v11.b, v12.b, v13.b}[5], [RGB], #4
.elseif \size == 1
ld4 {v10.b, v11.b, v12.b, v13.b}[6], [RGB], #4
.else
.error unsupported macroblock size
.endif
.else
.error unsupported bpp
.endif
.endm
.macro generate_jsimd_rgb_ycc_convert_neon colorid, bpp, r_offs, g_offs, \
b_offs, fast_ld3
/*
* 2-stage pipelined RGB->YCbCr conversion
*/
.macro do_rgb_to_yuv_stage1
ushll v4.8h, v1\r_offs\().8b, #0 /* r = v4 */
ushll v6.8h, v1\g_offs\().8b, #0 /* g = v6 */
ushll v8.8h, v1\b_offs\().8b, #0 /* b = v8 */
rev64 v18.4s, v1.4s
rev64 v26.4s, v1.4s
rev64 v28.4s, v1.4s
rev64 v30.4s, v1.4s
umull v14.4s, v4.4h, v0.h[0]
umull2 v16.4s, v4.8h, v0.h[0]
umlsl v18.4s, v4.4h, v0.h[3]
umlsl2 v26.4s, v4.8h, v0.h[3]
umlal v28.4s, v4.4h, v0.h[5]
umlal2 v30.4s, v4.8h, v0.h[5]
umlal v14.4s, v6.4h, v0.h[1]
umlal2 v16.4s, v6.8h, v0.h[1]
umlsl v18.4s, v6.4h, v0.h[4]
umlsl2 v26.4s, v6.8h, v0.h[4]
umlsl v28.4s, v6.4h, v0.h[6]
umlsl2 v30.4s, v6.8h, v0.h[6]
umlal v14.4s, v8.4h, v0.h[2]
umlal2 v16.4s, v8.8h, v0.h[2]
umlal v18.4s, v8.4h, v0.h[5]
umlal2 v26.4s, v8.8h, v0.h[5]
umlsl v28.4s, v8.4h, v0.h[7]
umlsl2 v30.4s, v8.8h, v0.h[7]
.endm
.macro do_rgb_to_yuv_stage2
rshrn v20.4h, v14.4s, #16
shrn v22.4h, v18.4s, #16
shrn v24.4h, v28.4s, #16
rshrn2 v20.8h, v16.4s, #16
shrn2 v22.8h, v26.4s, #16
shrn2 v24.8h, v30.4s, #16
xtn v20.8b, v20.8h /* v20 = y */
xtn v21.8b, v22.8h /* v21 = u */
xtn v22.8b, v24.8h /* v22 = v */
.endm
.macro do_rgb_to_yuv
do_rgb_to_yuv_stage1
do_rgb_to_yuv_stage2
.endm
/* TODO: expand macros and interleave instructions if some in-order
* AArch64 processor actually can dual-issue LOAD/STORE with ALU */
.macro do_rgb_to_yuv_stage2_store_load_stage1 fast_ld3
do_rgb_to_yuv_stage2
do_load \bpp, 8, \fast_ld3
st1 {v20.8b}, [Y], #8
st1 {v21.8b}, [U], #8
st1 {v22.8b}, [V], #8
do_rgb_to_yuv_stage1
.endm
.if \fast_ld3 == 1
asm_function jsimd_\colorid\()_ycc_convert_neon
.else
asm_function jsimd_\colorid\()_ycc_convert_neon_slowld3
.endif
OUTPUT_WIDTH .req w0
INPUT_BUF .req x1
OUTPUT_BUF .req x2
OUTPUT_ROW .req w3
NUM_ROWS .req w4
OUTPUT_BUF0 .req x5
OUTPUT_BUF1 .req x6
OUTPUT_BUF2 .req x2 /* OUTPUT_BUF */
RGB .req x7
Y .req x9
U .req x10
V .req x11
N .req w12
/* Load constants to d0, d1, d2, d3 */
get_symbol_loc x13, Ljsimd_rgb_ycc_neon_consts
ld1 {v0.8h, v1.8h}, [x13]
ldr OUTPUT_BUF0, [OUTPUT_BUF]
ldr OUTPUT_BUF1, [OUTPUT_BUF, #8]
ldr OUTPUT_BUF2, [OUTPUT_BUF, #16]
.unreq OUTPUT_BUF
/* Save Neon registers */
sub sp, sp, #64
mov x9, sp
st1 {v8.8b, v9.8b, v10.8b, v11.8b}, [x9], 32
st1 {v12.8b, v13.8b, v14.8b, v15.8b}, [x9], 32
/* Outer loop over scanlines */
cmp NUM_ROWS, #1
b.lt 9f
0:
ldr Y, [OUTPUT_BUF0, OUTPUT_ROW, uxtw #3]
ldr U, [OUTPUT_BUF1, OUTPUT_ROW, uxtw #3]
mov N, OUTPUT_WIDTH
ldr V, [OUTPUT_BUF2, OUTPUT_ROW, uxtw #3]
add OUTPUT_ROW, OUTPUT_ROW, #1
ldr RGB, [INPUT_BUF], #8
/* Inner loop over pixels */
subs N, N, #8
b.lt 3f
do_load \bpp, 8, \fast_ld3
do_rgb_to_yuv_stage1
subs N, N, #8
b.lt 2f
1:
do_rgb_to_yuv_stage2_store_load_stage1 \fast_ld3
subs N, N, #8
b.ge 1b
2:
do_rgb_to_yuv_stage2
do_store 8
tst N, #7
b.eq 8f
3:
tbz N, #2, 3f
do_load \bpp, 4, \fast_ld3
3:
tbz N, #1, 4f
do_load \bpp, 2, \fast_ld3
4:
tbz N, #0, 5f
do_load \bpp, 1, \fast_ld3
5:
do_rgb_to_yuv
tbz N, #2, 6f
do_store 4
6:
tbz N, #1, 7f
do_store 2
7:
tbz N, #0, 8f
do_store 1
8:
subs NUM_ROWS, NUM_ROWS, #1
b.gt 0b
9:
/* Restore all registers and return */
ld1 {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
ld1 {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
br x30
.unreq OUTPUT_WIDTH
.unreq OUTPUT_ROW
.unreq INPUT_BUF
.unreq NUM_ROWS
.unreq OUTPUT_BUF0
.unreq OUTPUT_BUF1
.unreq OUTPUT_BUF2
.unreq RGB
.unreq Y
.unreq U
.unreq V
.unreq N
.purgem do_rgb_to_yuv
.purgem do_rgb_to_yuv_stage1
.purgem do_rgb_to_yuv_stage2
.purgem do_rgb_to_yuv_stage2_store_load_stage1
.endm
/*--------------------------------- id ----- bpp R G B Fast LD3 */
generate_jsimd_rgb_ycc_convert_neon extrgb, 24, 0, 1, 2, 1
generate_jsimd_rgb_ycc_convert_neon extbgr, 24, 2, 1, 0, 1
generate_jsimd_rgb_ycc_convert_neon extrgbx, 32, 0, 1, 2, 1
generate_jsimd_rgb_ycc_convert_neon extbgrx, 32, 2, 1, 0, 1
generate_jsimd_rgb_ycc_convert_neon extxbgr, 32, 3, 2, 1, 1
generate_jsimd_rgb_ycc_convert_neon extxrgb, 32, 1, 2, 3, 1
generate_jsimd_rgb_ycc_convert_neon extrgb, 24, 0, 1, 2, 0
generate_jsimd_rgb_ycc_convert_neon extbgr, 24, 2, 1, 0, 0
.purgem do_load
.purgem do_store
/*****************************************************************************/
/*
* jsimd_fdct_islow_neon
*
* This file contains a slower but more accurate integer implementation of the
* forward DCT (Discrete Cosine Transform). The following code is based
* directly on the IJG''s original jfdctint.c; see the jfdctint.c for
* more details.
*
* TODO: can be combined with 'jsimd_convsamp_neon' to get
* rid of a bunch of VLD1.16 instructions
*/
#define CONST_BITS 13
#define PASS1_BITS 2
#define DESCALE_P1 (CONST_BITS - PASS1_BITS)
#define DESCALE_P2 (CONST_BITS + PASS1_BITS)
#define XFIX_P_0_298 v0.h[0]
#define XFIX_N_0_390 v0.h[1]
#define XFIX_P_0_541 v0.h[2]
#define XFIX_P_0_765 v0.h[3]
#define XFIX_N_0_899 v0.h[4]
#define XFIX_P_1_175 v0.h[5]
#define XFIX_P_1_501 v0.h[6]
#define XFIX_N_1_847 v0.h[7]
#define XFIX_N_1_961 v1.h[0]
#define XFIX_P_2_053 v1.h[1]
#define XFIX_N_2_562 v1.h[2]
#define XFIX_P_3_072 v1.h[3]
asm_function jsimd_fdct_islow_neon
DATA .req x0
TMP .req x9
/* Load constants */
get_symbol_loc TMP, Ljsimd_fdct_islow_neon_consts
ld1 {v0.8h, v1.8h}, [TMP]
/* Save Neon registers */
sub sp, sp, #64
mov x10, sp
st1 {v8.8b, v9.8b, v10.8b, v11.8b}, [x10], 32
st1 {v12.8b, v13.8b, v14.8b, v15.8b}, [x10], 32
/* Load all DATA into Neon registers with the following allocation:
* 0 1 2 3 | 4 5 6 7
* ---------+--------
* 0 | d16 | d17 | v16.8h
* 1 | d18 | d19 | v17.8h
* 2 | d20 | d21 | v18.8h
* 3 | d22 | d23 | v19.8h
* 4 | d24 | d25 | v20.8h
* 5 | d26 | d27 | v21.8h
* 6 | d28 | d29 | v22.8h
* 7 | d30 | d31 | v23.8h
*/
ld1 {v16.8h, v17.8h, v18.8h, v19.8h}, [DATA], 64
ld1 {v20.8h, v21.8h, v22.8h, v23.8h}, [DATA]
sub DATA, DATA, #64
/* Transpose */
transpose_8x8 v16, v17, v18, v19, v20, v21, v22, v23, v31, v2, v3, v4
/* 1-D FDCT */
add v24.8h, v16.8h, v23.8h /* tmp0 = dataptr[0] + dataptr[7]; */
sub v31.8h, v16.8h, v23.8h /* tmp7 = dataptr[0] - dataptr[7]; */
add v25.8h, v17.8h, v22.8h /* tmp1 = dataptr[1] + dataptr[6]; */
sub v30.8h, v17.8h, v22.8h /* tmp6 = dataptr[1] - dataptr[6]; */
add v26.8h, v18.8h, v21.8h /* tmp2 = dataptr[2] + dataptr[5]; */
sub v29.8h, v18.8h, v21.8h /* tmp5 = dataptr[2] - dataptr[5]; */
add v27.8h, v19.8h, v20.8h /* tmp3 = dataptr[3] + dataptr[4]; */
sub v28.8h, v19.8h, v20.8h /* tmp4 = dataptr[3] - dataptr[4]; */
/* even part */
add v8.8h, v24.8h, v27.8h /* tmp10 = tmp0 + tmp3; */
sub v9.8h, v24.8h, v27.8h /* tmp13 = tmp0 - tmp3; */
add v10.8h, v25.8h, v26.8h /* tmp11 = tmp1 + tmp2; */
sub v11.8h, v25.8h, v26.8h /* tmp12 = tmp1 - tmp2; */
add v16.8h, v8.8h, v10.8h /* tmp10 + tmp11 */
sub v20.8h, v8.8h, v10.8h /* tmp10 - tmp11 */
add v18.8h, v11.8h, v9.8h /* tmp12 + tmp13 */
shl v16.8h, v16.8h, #PASS1_BITS /* dataptr[0] = (DCTELEM)LEFT_SHIFT(tmp10 + tmp11, PASS1_BITS); */
shl v20.8h, v20.8h, #PASS1_BITS /* dataptr[4] = (DCTELEM)LEFT_SHIFT(tmp10 - tmp11, PASS1_BITS); */
smull2 v24.4s, v18.8h, XFIX_P_0_541 /* z1 hi = MULTIPLY(tmp12 + tmp13, XFIX_P_0_541); */
smull v18.4s, v18.4h, XFIX_P_0_541 /* z1 lo = MULTIPLY(tmp12 + tmp13, XFIX_P_0_541); */
mov v22.16b, v18.16b
mov v25.16b, v24.16b
smlal v18.4s, v9.4h, XFIX_P_0_765 /* lo z1 + MULTIPLY(tmp13, XFIX_P_0_765) */
smlal2 v24.4s, v9.8h, XFIX_P_0_765 /* hi z1 + MULTIPLY(tmp13, XFIX_P_0_765) */
smlal v22.4s, v11.4h, XFIX_N_1_847 /* lo z1 + MULTIPLY(tmp12, XFIX_N_1_847) */
smlal2 v25.4s, v11.8h, XFIX_N_1_847 /* hi z1 + MULTIPLY(tmp12, XFIX_N_1_847) */
rshrn v18.4h, v18.4s, #DESCALE_P1
rshrn v22.4h, v22.4s, #DESCALE_P1
rshrn2 v18.8h, v24.4s, #DESCALE_P1 /* dataptr[2] = (DCTELEM)DESCALE(z1 + MULTIPLY(tmp13, XFIX_P_0_765), CONST_BITS-PASS1_BITS); */
rshrn2 v22.8h, v25.4s, #DESCALE_P1 /* dataptr[6] = (DCTELEM)DESCALE(z1 + MULTIPLY(tmp12, XFIX_N_1_847), CONST_BITS-PASS1_BITS); */
/* Odd part */
add v8.8h, v28.8h, v31.8h /* z1 = tmp4 + tmp7; */
add v9.8h, v29.8h, v30.8h /* z2 = tmp5 + tmp6; */
add v10.8h, v28.8h, v30.8h /* z3 = tmp4 + tmp6; */
add v11.8h, v29.8h, v31.8h /* z4 = tmp5 + tmp7; */
smull v4.4s, v10.4h, XFIX_P_1_175 /* z5 lo = z3 lo * XFIX_P_1_175 */
smull2 v5.4s, v10.8h, XFIX_P_1_175
smlal v4.4s, v11.4h, XFIX_P_1_175 /* z5 = MULTIPLY(z3 + z4, FIX_1_175875602); */
smlal2 v5.4s, v11.8h, XFIX_P_1_175
smull2 v24.4s, v28.8h, XFIX_P_0_298
smull2 v25.4s, v29.8h, XFIX_P_2_053
smull2 v26.4s, v30.8h, XFIX_P_3_072
smull2 v27.4s, v31.8h, XFIX_P_1_501
smull v28.4s, v28.4h, XFIX_P_0_298 /* tmp4 = MULTIPLY(tmp4, FIX_0_298631336); */
smull v29.4s, v29.4h, XFIX_P_2_053 /* tmp5 = MULTIPLY(tmp5, FIX_2_053119869); */
smull v30.4s, v30.4h, XFIX_P_3_072 /* tmp6 = MULTIPLY(tmp6, FIX_3_072711026); */
smull v31.4s, v31.4h, XFIX_P_1_501 /* tmp7 = MULTIPLY(tmp7, FIX_1_501321110); */
smull2 v12.4s, v8.8h, XFIX_N_0_899
smull2 v13.4s, v9.8h, XFIX_N_2_562
smull2 v14.4s, v10.8h, XFIX_N_1_961
smull2 v15.4s, v11.8h, XFIX_N_0_390
smull v8.4s, v8.4h, XFIX_N_0_899 /* z1 = MULTIPLY(z1, -FIX_0_899976223); */
smull v9.4s, v9.4h, XFIX_N_2_562 /* z2 = MULTIPLY(z2, -FIX_2_562915447); */
smull v10.4s, v10.4h, XFIX_N_1_961 /* z3 = MULTIPLY(z3, -FIX_1_961570560); */
smull v11.4s, v11.4h, XFIX_N_0_390 /* z4 = MULTIPLY(z4, -FIX_0_390180644); */
add v10.4s, v10.4s, v4.4s /* z3 += z5 */
add v14.4s, v14.4s, v5.4s
add v11.4s, v11.4s, v4.4s /* z4 += z5 */
add v15.4s, v15.4s, v5.4s
add v28.4s, v28.4s, v8.4s /* tmp4 += z1 */
add v24.4s, v24.4s, v12.4s
add v29.4s, v29.4s, v9.4s /* tmp5 += z2 */
add v25.4s, v25.4s, v13.4s
add v30.4s, v30.4s, v10.4s /* tmp6 += z3 */
add v26.4s, v26.4s, v14.4s
add v31.4s, v31.4s, v11.4s /* tmp7 += z4 */
add v27.4s, v27.4s, v15.4s
add v28.4s, v28.4s, v10.4s /* tmp4 += z3 */
add v24.4s, v24.4s, v14.4s
add v29.4s, v29.4s, v11.4s /* tmp5 += z4 */
add v25.4s, v25.4s, v15.4s
add v30.4s, v30.4s, v9.4s /* tmp6 += z2 */
add v26.4s, v26.4s, v13.4s
add v31.4s, v31.4s, v8.4s /* tmp7 += z1 */
add v27.4s, v27.4s, v12.4s
rshrn v23.4h, v28.4s, #DESCALE_P1
rshrn v21.4h, v29.4s, #DESCALE_P1
rshrn v19.4h, v30.4s, #DESCALE_P1
rshrn v17.4h, v31.4s, #DESCALE_P1
rshrn2 v23.8h, v24.4s, #DESCALE_P1 /* dataptr[7] = (DCTELEM)DESCALE(tmp4 + z1 + z3, CONST_BITS-PASS1_BITS); */
rshrn2 v21.8h, v25.4s, #DESCALE_P1 /* dataptr[5] = (DCTELEM)DESCALE(tmp5 + z2 + z4, CONST_BITS-PASS1_BITS); */
rshrn2 v19.8h, v26.4s, #DESCALE_P1 /* dataptr[3] = (DCTELEM)DESCALE(tmp6 + z2 + z3, CONST_BITS-PASS1_BITS); */
rshrn2 v17.8h, v27.4s, #DESCALE_P1 /* dataptr[1] = (DCTELEM)DESCALE(tmp7 + z1 + z4, CONST_BITS-PASS1_BITS); */
/* Transpose */
transpose_8x8 v16, v17, v18, v19, v20, v21, v22, v23, v31, v2, v3, v4
/* 1-D FDCT */
add v24.8h, v16.8h, v23.8h /* tmp0 = dataptr[0] + dataptr[7]; */
sub v31.8h, v16.8h, v23.8h /* tmp7 = dataptr[0] - dataptr[7]; */
add v25.8h, v17.8h, v22.8h /* tmp1 = dataptr[1] + dataptr[6]; */
sub v30.8h, v17.8h, v22.8h /* tmp6 = dataptr[1] - dataptr[6]; */
add v26.8h, v18.8h, v21.8h /* tmp2 = dataptr[2] + dataptr[5]; */
sub v29.8h, v18.8h, v21.8h /* tmp5 = dataptr[2] - dataptr[5]; */
add v27.8h, v19.8h, v20.8h /* tmp3 = dataptr[3] + dataptr[4]; */
sub v28.8h, v19.8h, v20.8h /* tmp4 = dataptr[3] - dataptr[4]; */
/* even part */
add v8.8h, v24.8h, v27.8h /* tmp10 = tmp0 + tmp3; */
sub v9.8h, v24.8h, v27.8h /* tmp13 = tmp0 - tmp3; */
add v10.8h, v25.8h, v26.8h /* tmp11 = tmp1 + tmp2; */
sub v11.8h, v25.8h, v26.8h /* tmp12 = tmp1 - tmp2; */
add v16.8h, v8.8h, v10.8h /* tmp10 + tmp11 */
sub v20.8h, v8.8h, v10.8h /* tmp10 - tmp11 */
add v18.8h, v11.8h, v9.8h /* tmp12 + tmp13 */
srshr v16.8h, v16.8h, #PASS1_BITS /* dataptr[0] = (DCTELEM)DESCALE(tmp10 + tmp11, PASS1_BITS); */
srshr v20.8h, v20.8h, #PASS1_BITS /* dataptr[4] = (DCTELEM)DESCALE(tmp10 - tmp11, PASS1_BITS); */
smull2 v24.4s, v18.8h, XFIX_P_0_541 /* z1 hi = MULTIPLY(tmp12 + tmp13, XFIX_P_0_541); */
smull v18.4s, v18.4h, XFIX_P_0_541 /* z1 lo = MULTIPLY(tmp12 + tmp13, XFIX_P_0_541); */
mov v22.16b, v18.16b
mov v25.16b, v24.16b
smlal v18.4s, v9.4h, XFIX_P_0_765 /* lo z1 + MULTIPLY(tmp13, XFIX_P_0_765) */
smlal2 v24.4s, v9.8h, XFIX_P_0_765 /* hi z1 + MULTIPLY(tmp13, XFIX_P_0_765) */
smlal v22.4s, v11.4h, XFIX_N_1_847 /* lo z1 + MULTIPLY(tmp12, XFIX_N_1_847) */
smlal2 v25.4s, v11.8h, XFIX_N_1_847 /* hi z1 + MULTIPLY(tmp12, XFIX_N_1_847) */
rshrn v18.4h, v18.4s, #DESCALE_P2
rshrn v22.4h, v22.4s, #DESCALE_P2
rshrn2 v18.8h, v24.4s, #DESCALE_P2 /* dataptr[2] = (DCTELEM)DESCALE(z1 + MULTIPLY(tmp13, XFIX_P_0_765), CONST_BITS-PASS1_BITS); */
rshrn2 v22.8h, v25.4s, #DESCALE_P2 /* dataptr[6] = (DCTELEM)DESCALE(z1 + MULTIPLY(tmp12, XFIX_N_1_847), CONST_BITS-PASS1_BITS); */
/* Odd part */
add v8.8h, v28.8h, v31.8h /* z1 = tmp4 + tmp7; */
add v9.8h, v29.8h, v30.8h /* z2 = tmp5 + tmp6; */
add v10.8h, v28.8h, v30.8h /* z3 = tmp4 + tmp6; */
add v11.8h, v29.8h, v31.8h /* z4 = tmp5 + tmp7; */
smull v4.4s, v10.4h, XFIX_P_1_175 /* z5 lo = z3 lo * XFIX_P_1_175 */
smull2 v5.4s, v10.8h, XFIX_P_1_175
smlal v4.4s, v11.4h, XFIX_P_1_175 /* z5 = MULTIPLY(z3 + z4, FIX_1_175875602); */
smlal2 v5.4s, v11.8h, XFIX_P_1_175
smull2 v24.4s, v28.8h, XFIX_P_0_298
smull2 v25.4s, v29.8h, XFIX_P_2_053
smull2 v26.4s, v30.8h, XFIX_P_3_072
smull2 v27.4s, v31.8h, XFIX_P_1_501
smull v28.4s, v28.4h, XFIX_P_0_298 /* tmp4 = MULTIPLY(tmp4, FIX_0_298631336); */
smull v29.4s, v29.4h, XFIX_P_2_053 /* tmp5 = MULTIPLY(tmp5, FIX_2_053119869); */
smull v30.4s, v30.4h, XFIX_P_3_072 /* tmp6 = MULTIPLY(tmp6, FIX_3_072711026); */
smull v31.4s, v31.4h, XFIX_P_1_501 /* tmp7 = MULTIPLY(tmp7, FIX_1_501321110); */
smull2 v12.4s, v8.8h, XFIX_N_0_899
smull2 v13.4s, v9.8h, XFIX_N_2_562
smull2 v14.4s, v10.8h, XFIX_N_1_961
smull2 v15.4s, v11.8h, XFIX_N_0_390
smull v8.4s, v8.4h, XFIX_N_0_899 /* z1 = MULTIPLY(z1, -FIX_0_899976223); */
smull v9.4s, v9.4h, XFIX_N_2_562 /* z2 = MULTIPLY(z2, -FIX_2_562915447); */
smull v10.4s, v10.4h, XFIX_N_1_961 /* z3 = MULTIPLY(z3, -FIX_1_961570560); */
smull v11.4s, v11.4h, XFIX_N_0_390 /* z4 = MULTIPLY(z4, -FIX_0_390180644); */
add v10.4s, v10.4s, v4.4s
add v14.4s, v14.4s, v5.4s
add v11.4s, v11.4s, v4.4s
add v15.4s, v15.4s, v5.4s
add v28.4s, v28.4s, v8.4s /* tmp4 += z1 */
add v24.4s, v24.4s, v12.4s
add v29.4s, v29.4s, v9.4s /* tmp5 += z2 */
add v25.4s, v25.4s, v13.4s
add v30.4s, v30.4s, v10.4s /* tmp6 += z3 */
add v26.4s, v26.4s, v14.4s
add v31.4s, v31.4s, v11.4s /* tmp7 += z4 */
add v27.4s, v27.4s, v15.4s
add v28.4s, v28.4s, v10.4s /* tmp4 += z3 */
add v24.4s, v24.4s, v14.4s
add v29.4s, v29.4s, v11.4s /* tmp5 += z4 */
add v25.4s, v25.4s, v15.4s
add v30.4s, v30.4s, v9.4s /* tmp6 += z2 */
add v26.4s, v26.4s, v13.4s
add v31.4s, v31.4s, v8.4s /* tmp7 += z1 */
add v27.4s, v27.4s, v12.4s
rshrn v23.4h, v28.4s, #DESCALE_P2
rshrn v21.4h, v29.4s, #DESCALE_P2
rshrn v19.4h, v30.4s, #DESCALE_P2
rshrn v17.4h, v31.4s, #DESCALE_P2
rshrn2 v23.8h, v24.4s, #DESCALE_P2 /* dataptr[7] = (DCTELEM)DESCALE(tmp4 + z1 + z3, CONST_BITS-PASS1_BITS); */
rshrn2 v21.8h, v25.4s, #DESCALE_P2 /* dataptr[5] = (DCTELEM)DESCALE(tmp5 + z2 + z4, CONST_BITS-PASS1_BITS); */
rshrn2 v19.8h, v26.4s, #DESCALE_P2 /* dataptr[3] = (DCTELEM)DESCALE(tmp6 + z2 + z3, CONST_BITS-PASS1_BITS); */
rshrn2 v17.8h, v27.4s, #DESCALE_P2 /* dataptr[1] = (DCTELEM)DESCALE(tmp7 + z1 + z4, CONST_BITS-PASS1_BITS); */
/* store results */
st1 {v16.8h, v17.8h, v18.8h, v19.8h}, [DATA], 64
st1 {v20.8h, v21.8h, v22.8h, v23.8h}, [DATA]
/* Restore Neon registers */
ld1 {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
ld1 {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
br x30
.unreq DATA
.unreq TMP
#undef XFIX_P_0_298
#undef XFIX_N_0_390
#undef XFIX_P_0_541
#undef XFIX_P_0_765
#undef XFIX_N_0_899
#undef XFIX_P_1_175
#undef XFIX_P_1_501
#undef XFIX_N_1_847
#undef XFIX_N_1_961
#undef XFIX_P_2_053
#undef XFIX_N_2_562
#undef XFIX_P_3_072
/*****************************************************************************/
/*
* GLOBAL(JOCTET *)
* jsimd_huff_encode_one_block(working_state *state, JOCTET *buffer,
* JCOEFPTR block, int last_dc_val,
* c_derived_tbl *dctbl, c_derived_tbl *actbl)
*
*/
BUFFER .req x1
PUT_BUFFER .req x6
PUT_BITS .req x7
PUT_BITSw .req w7
.macro emit_byte
sub PUT_BITS, PUT_BITS, #0x8
lsr x19, PUT_BUFFER, PUT_BITS
uxtb w19, w19
strb w19, [BUFFER, #1]!
cmp w19, #0xff
b.ne 14f
strb wzr, [BUFFER, #1]!
14:
.endm
.macro put_bits CODE, SIZE
lsl PUT_BUFFER, PUT_BUFFER, \SIZE
add PUT_BITS, PUT_BITS, \SIZE
orr PUT_BUFFER, PUT_BUFFER, \CODE
.endm
.macro checkbuf31
cmp PUT_BITS, #0x20
b.lt 31f
emit_byte
emit_byte
emit_byte
emit_byte
31:
.endm
.macro checkbuf47
cmp PUT_BITS, #0x30
b.lt 47f
emit_byte
emit_byte
emit_byte
emit_byte
emit_byte
emit_byte
47:
.endm
.macro generate_jsimd_huff_encode_one_block fast_tbl
.if \fast_tbl == 1
asm_function jsimd_huff_encode_one_block_neon
.else
asm_function jsimd_huff_encode_one_block_neon_slowtbl
.endif
sub sp, sp, 272
sub BUFFER, BUFFER, #0x1 /* BUFFER=buffer-- */
/* Save Arm registers */
stp x19, x20, [sp]
get_symbol_loc x15, Ljsimd_huff_encode_one_block_neon_consts
ldr PUT_BUFFER, [x0, #0x10]
ldr PUT_BITSw, [x0, #0x18]
ldrsh w12, [x2] /* load DC coeff in w12 */
/* prepare data */
.if \fast_tbl == 1
ld1 {v23.16b}, [x15], #16
ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x15], #64
ld1 {v4.16b, v5.16b, v6.16b, v7.16b}, [x15], #64
ld1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x15], #64
ld1 {v24.16b, v25.16b, v26.16b, v27.16b}, [x2], #64
ld1 {v28.16b, v29.16b, v30.16b, v31.16b}, [x2], #64
sub w12, w12, w3 /* last_dc_val, not used afterwards */
/* ZigZag 8x8 */
tbl v0.16b, {v24.16b, v25.16b, v26.16b, v27.16b}, v0.16b
tbl v1.16b, {v24.16b, v25.16b, v26.16b, v27.16b}, v1.16b
tbl v2.16b, {v25.16b, v26.16b, v27.16b, v28.16b}, v2.16b
tbl v3.16b, {v24.16b, v25.16b, v26.16b, v27.16b}, v3.16b
tbl v4.16b, {v28.16b, v29.16b, v30.16b, v31.16b}, v4.16b
tbl v5.16b, {v25.16b, v26.16b, v27.16b, v28.16b}, v5.16b
tbl v6.16b, {v27.16b, v28.16b, v29.16b, v30.16b}, v6.16b
tbl v7.16b, {v29.16b, v30.16b, v31.16b}, v7.16b
ins v0.h[0], w12
tbx v1.16b, {v28.16b}, v16.16b
tbx v2.16b, {v29.16b, v30.16b}, v17.16b
tbx v5.16b, {v29.16b, v30.16b}, v18.16b
tbx v6.16b, {v31.16b}, v19.16b
.else
add x13, x2, #0x22
sub w12, w12, w3 /* last_dc_val, not used afterwards */
ld1 {v23.16b}, [x15]
add x14, x2, #0x18
add x3, x2, #0x36
ins v0.h[0], w12
add x9, x2, #0x2
ld1 {v1.h}[0], [x13]
add x15, x2, #0x30
ld1 {v2.h}[0], [x14]
add x19, x2, #0x26
ld1 {v3.h}[0], [x3]
add x20, x2, #0x28
ld1 {v0.h}[1], [x9]
add x12, x2, #0x10
ld1 {v1.h}[1], [x15]
add x13, x2, #0x40
ld1 {v2.h}[1], [x19]
add x14, x2, #0x34
ld1 {v3.h}[1], [x20]
add x3, x2, #0x1a
ld1 {v0.h}[2], [x12]
add x9, x2, #0x20
ld1 {v1.h}[2], [x13]
add x15, x2, #0x32
ld1 {v2.h}[2], [x14]
add x19, x2, #0x42
ld1 {v3.h}[2], [x3]
add x20, x2, #0xc
ld1 {v0.h}[3], [x9]
add x12, x2, #0x12
ld1 {v1.h}[3], [x15]
add x13, x2, #0x24
ld1 {v2.h}[3], [x19]
add x14, x2, #0x50
ld1 {v3.h}[3], [x20]
add x3, x2, #0xe
ld1 {v0.h}[4], [x12]
add x9, x2, #0x4
ld1 {v1.h}[4], [x13]
add x15, x2, #0x16
ld1 {v2.h}[4], [x14]
add x19, x2, #0x60
ld1 {v3.h}[4], [x3]
add x20, x2, #0x1c
ld1 {v0.h}[5], [x9]
add x12, x2, #0x6
ld1 {v1.h}[5], [x15]
add x13, x2, #0x8
ld1 {v2.h}[5], [x19]
add x14, x2, #0x52
ld1 {v3.h}[5], [x20]
add x3, x2, #0x2a
ld1 {v0.h}[6], [x12]
add x9, x2, #0x14
ld1 {v1.h}[6], [x13]
add x15, x2, #0xa
ld1 {v2.h}[6], [x14]
add x19, x2, #0x44
ld1 {v3.h}[6], [x3]
add x20, x2, #0x38
ld1 {v0.h}[7], [x9]
add x12, x2, #0x46
ld1 {v1.h}[7], [x15]
add x13, x2, #0x3a
ld1 {v2.h}[7], [x19]
add x14, x2, #0x74
ld1 {v3.h}[7], [x20]
add x3, x2, #0x6a
ld1 {v4.h}[0], [x12]
add x9, x2, #0x54
ld1 {v5.h}[0], [x13]
add x15, x2, #0x2c
ld1 {v6.h}[0], [x14]
add x19, x2, #0x76
ld1 {v7.h}[0], [x3]
add x20, x2, #0x78
ld1 {v4.h}[1], [x9]
add x12, x2, #0x62
ld1 {v5.h}[1], [x15]
add x13, x2, #0x1e
ld1 {v6.h}[1], [x19]
add x14, x2, #0x68
ld1 {v7.h}[1], [x20]
add x3, x2, #0x7a
ld1 {v4.h}[2], [x12]
add x9, x2, #0x70
ld1 {v5.h}[2], [x13]
add x15, x2, #0x2e
ld1 {v6.h}[2], [x14]
add x19, x2, #0x5a
ld1 {v7.h}[2], [x3]
add x20, x2, #0x6c
ld1 {v4.h}[3], [x9]
add x12, x2, #0x72
ld1 {v5.h}[3], [x15]
add x13, x2, #0x3c
ld1 {v6.h}[3], [x19]
add x14, x2, #0x4c
ld1 {v7.h}[3], [x20]
add x3, x2, #0x5e
ld1 {v4.h}[4], [x12]
add x9, x2, #0x64
ld1 {v5.h}[4], [x13]
add x15, x2, #0x4a
ld1 {v6.h}[4], [x14]
add x19, x2, #0x3e
ld1 {v7.h}[4], [x3]
add x20, x2, #0x6e
ld1 {v4.h}[5], [x9]
add x12, x2, #0x56
ld1 {v5.h}[5], [x15]
add x13, x2, #0x58
ld1 {v6.h}[5], [x19]
add x14, x2, #0x4e
ld1 {v7.h}[5], [x20]
add x3, x2, #0x7c
ld1 {v4.h}[6], [x12]
add x9, x2, #0x48
ld1 {v5.h}[6], [x13]
add x15, x2, #0x66
ld1 {v6.h}[6], [x14]
add x19, x2, #0x5c
ld1 {v7.h}[6], [x3]
add x20, x2, #0x7e
ld1 {v4.h}[7], [x9]
ld1 {v5.h}[7], [x15]
ld1 {v6.h}[7], [x19]
ld1 {v7.h}[7], [x20]
.endif
cmlt v24.8h, v0.8h, #0
cmlt v25.8h, v1.8h, #0
cmlt v26.8h, v2.8h, #0
cmlt v27.8h, v3.8h, #0
cmlt v28.8h, v4.8h, #0
cmlt v29.8h, v5.8h, #0
cmlt v30.8h, v6.8h, #0
cmlt v31.8h, v7.8h, #0
abs v0.8h, v0.8h
abs v1.8h, v1.8h
abs v2.8h, v2.8h
abs v3.8h, v3.8h
abs v4.8h, v4.8h
abs v5.8h, v5.8h
abs v6.8h, v6.8h
abs v7.8h, v7.8h
eor v24.16b, v24.16b, v0.16b
eor v25.16b, v25.16b, v1.16b
eor v26.16b, v26.16b, v2.16b
eor v27.16b, v27.16b, v3.16b
eor v28.16b, v28.16b, v4.16b
eor v29.16b, v29.16b, v5.16b
eor v30.16b, v30.16b, v6.16b
eor v31.16b, v31.16b, v7.16b
cmeq v16.8h, v0.8h, #0
cmeq v17.8h, v1.8h, #0
cmeq v18.8h, v2.8h, #0
cmeq v19.8h, v3.8h, #0
cmeq v20.8h, v4.8h, #0
cmeq v21.8h, v5.8h, #0
cmeq v22.8h, v6.8h, #0
xtn v16.8b, v16.8h
xtn v18.8b, v18.8h
xtn v20.8b, v20.8h
xtn v22.8b, v22.8h
umov w14, v0.h[0]
xtn2 v16.16b, v17.8h
umov w13, v24.h[0]
xtn2 v18.16b, v19.8h
clz w14, w14
xtn2 v20.16b, v21.8h
lsl w13, w13, w14
cmeq v17.8h, v7.8h, #0
sub w12, w14, #32
xtn2 v22.16b, v17.8h
lsr w13, w13, w14
and v16.16b, v16.16b, v23.16b
neg w12, w12
and v18.16b, v18.16b, v23.16b
add x3, x4, #0x400 /* r1 = dctbl->ehufsi */
and v20.16b, v20.16b, v23.16b
add x15, sp, #0x90 /* x15 = t2 */
and v22.16b, v22.16b, v23.16b
ldr w10, [x4, x12, lsl #2]
addp v16.16b, v16.16b, v18.16b
ldrb w11, [x3, x12]
addp v20.16b, v20.16b, v22.16b
checkbuf47
addp v16.16b, v16.16b, v20.16b
put_bits x10, x11
addp v16.16b, v16.16b, v18.16b
checkbuf47
umov x9, v16.D[0]
put_bits x13, x12
cnt v17.8b, v16.8b
mvn x9, x9
addv B18, v17.8b
add x4, x5, #0x400 /* x4 = actbl->ehufsi */
umov w12, v18.b[0]
lsr x9, x9, #0x1 /* clear AC coeff */
ldr w13, [x5, #0x3c0] /* x13 = actbl->ehufco[0xf0] */
rbit x9, x9 /* x9 = index0 */
ldrb w14, [x4, #0xf0] /* x14 = actbl->ehufsi[0xf0] */
cmp w12, #(64-8)
add x11, sp, #16
b.lt 4f
cbz x9, 6f
st1 {v0.8h, v1.8h, v2.8h, v3.8h}, [x11], #64
st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x11], #64
st1 {v24.8h, v25.8h, v26.8h, v27.8h}, [x11], #64
st1 {v28.8h, v29.8h, v30.8h, v31.8h}, [x11], #64
1:
clz x2, x9
add x15, x15, x2, lsl #1
lsl x9, x9, x2
ldrh w20, [x15, #-126]
2:
cmp x2, #0x10
b.lt 3f
sub x2, x2, #0x10
checkbuf47
put_bits x13, x14
b 2b
3:
clz w20, w20
ldrh w3, [x15, #2]!
sub w11, w20, #32
lsl w3, w3, w20
neg w11, w11
lsr w3, w3, w20
add x2, x11, x2, lsl #4
lsl x9, x9, #0x1
ldr w12, [x5, x2, lsl #2]
ldrb w10, [x4, x2]
checkbuf31
put_bits x12, x10
put_bits x3, x11
cbnz x9, 1b
b 6f
4:
movi v21.8h, #0x0010
clz v0.8h, v0.8h
clz v1.8h, v1.8h
clz v2.8h, v2.8h
clz v3.8h, v3.8h
clz v4.8h, v4.8h
clz v5.8h, v5.8h
clz v6.8h, v6.8h
clz v7.8h, v7.8h
ushl v24.8h, v24.8h, v0.8h
ushl v25.8h, v25.8h, v1.8h
ushl v26.8h, v26.8h, v2.8h
ushl v27.8h, v27.8h, v3.8h
ushl v28.8h, v28.8h, v4.8h
ushl v29.8h, v29.8h, v5.8h
ushl v30.8h, v30.8h, v6.8h
ushl v31.8h, v31.8h, v7.8h
neg v0.8h, v0.8h
neg v1.8h, v1.8h
neg v2.8h, v2.8h
neg v3.8h, v3.8h
neg v4.8h, v4.8h
neg v5.8h, v5.8h
neg v6.8h, v6.8h
neg v7.8h, v7.8h
ushl v24.8h, v24.8h, v0.8h
ushl v25.8h, v25.8h, v1.8h
ushl v26.8h, v26.8h, v2.8h
ushl v27.8h, v27.8h, v3.8h
ushl v28.8h, v28.8h, v4.8h
ushl v29.8h, v29.8h, v5.8h
ushl v30.8h, v30.8h, v6.8h
ushl v31.8h, v31.8h, v7.8h
add v0.8h, v21.8h, v0.8h
add v1.8h, v21.8h, v1.8h
add v2.8h, v21.8h, v2.8h
add v3.8h, v21.8h, v3.8h
add v4.8h, v21.8h, v4.8h
add v5.8h, v21.8h, v5.8h
add v6.8h, v21.8h, v6.8h
add v7.8h, v21.8h, v7.8h
st1 {v0.8h, v1.8h, v2.8h, v3.8h}, [x11], #64
st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x11], #64
st1 {v24.8h, v25.8h, v26.8h, v27.8h}, [x11], #64
st1 {v28.8h, v29.8h, v30.8h, v31.8h}, [x11], #64
1:
clz x2, x9
add x15, x15, x2, lsl #1
lsl x9, x9, x2
ldrh w11, [x15, #-126]
2:
cmp x2, #0x10
b.lt 3f
sub x2, x2, #0x10
checkbuf47
put_bits x13, x14
b 2b
3:
ldrh w3, [x15, #2]!
add x2, x11, x2, lsl #4
lsl x9, x9, #0x1
ldr w12, [x5, x2, lsl #2]
ldrb w10, [x4, x2]
checkbuf31
put_bits x12, x10
put_bits x3, x11
cbnz x9, 1b
6:
add x13, sp, #0x10e
cmp x15, x13
b.hs 1f
ldr w12, [x5]
ldrb w14, [x4]
checkbuf47
put_bits x12, x14
1:
str PUT_BUFFER, [x0, #0x10]
str PUT_BITSw, [x0, #0x18]
ldp x19, x20, [sp], 16
add x0, BUFFER, #0x1
add sp, sp, 256
br x30
.endm
generate_jsimd_huff_encode_one_block 1
generate_jsimd_huff_encode_one_block 0
.unreq BUFFER
.unreq PUT_BUFFER
.unreq PUT_BITS
.unreq PUT_BITSw
.purgem emit_byte
.purgem put_bits
.purgem checkbuf31
.purgem checkbuf47
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