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etlegacy-libs/jpegturbo/simd/loongson/jdsample-mmi.c
Remy Marquis 24c1c8adbb libs: updated to libjpeg-turbo 2.0.3 
This reverts commit bf5d0e5973.
2019-12-25 23:29:06 +01:00

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/*
* Loongson MMI optimizations for libjpeg-turbo
*
* Copyright (C) 2015, 2018, D. R. Commander. All Rights Reserved.
* Copyright (C) 2016-2017, Loongson Technology Corporation Limited, BeiJing.
* All Rights Reserved.
* Authors: ZhuChen <zhuchen@loongson.cn>
* CaiWanwei <caiwanwei@loongson.cn>
* SunZhangzhi <sunzhangzhi-cq@loongson.cn>
*
* Based on the x86 SIMD extension for IJG JPEG library
* Copyright (C) 1999-2006, MIYASAKA Masaru.
*
* 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.
*/
/* CHROMA UPSAMPLING */
#include "jsimd_mmi.h"
enum const_index {
index_PW_THREE,
index_PW_SEVEN,
index_PW_EIGHT,
};
static uint64_t const_value[] = {
_uint64_set_pi16(3, 3, 3, 3),
_uint64_set_pi16(7, 7, 7, 7),
_uint64_set_pi16(8, 8, 8, 8),
};
#define PW_THREE get_const_value(index_PW_THREE)
#define PW_SEVEN get_const_value(index_PW_SEVEN)
#define PW_EIGHT get_const_value(index_PW_EIGHT)
#define PROCESS_ROW(r) { \
mm7 = _mm_load_si64((__m64 *)outptr##r); /* mm7=IntrL=( 0 1 2 3) */ \
mm3 = _mm_load_si64((__m64 *)outptr##r + 1); /* mm3=IntrH=( 4 5 6 7) */ \
\
mm0 = mm7; \
mm4 = mm3; \
mm0 = _mm_srli_si64(mm0, 2 * BYTE_BIT); /* mm0=( 1 2 3 -) */ \
mm4 = _mm_slli_si64(mm4, (SIZEOF_MMWORD - 2) * BYTE_BIT); /* mm4=( - - - 4) */ \
mm5 = mm7; \
mm6 = mm3; \
mm5 = _mm_srli_si64(mm5, (SIZEOF_MMWORD - 2) * BYTE_BIT); /* mm5=( 3 - - -) */ \
mm6 = _mm_slli_si64(mm6, 2 * BYTE_BIT); /* mm6=( - 4 5 6) */ \
\
mm0 = _mm_or_si64(mm0, mm4); /* mm0=( 1 2 3 4) */ \
mm5 = _mm_or_si64(mm5, mm6); /* mm5=( 3 4 5 6) */ \
\
mm1 = mm7; \
mm2 = mm3; \
mm1 = _mm_slli_si64(mm1, 2 * BYTE_BIT); /* mm1=( - 0 1 2) */ \
mm2 = _mm_srli_si64(mm2, 2 * BYTE_BIT); /* mm2=( 5 6 7 -) */ \
mm4 = mm3; \
mm4 = _mm_srli_si64(mm4, (SIZEOF_MMWORD - 2) * BYTE_BIT); /* mm4=( 7 - - -) */ \
\
mm1 = _mm_or_si64(mm1, wk[r]); /* mm1=(-1 0 1 2) */ \
mm2 = _mm_or_si64(mm2, wk[r + 2]); /* mm2=( 5 6 6 8) */ \
\
wk[r] = mm4; \
\
mm7 = _mm_mullo_pi16(mm7, PW_THREE); \
mm3 = _mm_mullo_pi16(mm3, PW_THREE); \
mm1 = _mm_add_pi16(mm1, PW_EIGHT); \
mm5 = _mm_add_pi16(mm5, PW_EIGHT); \
mm0 = _mm_add_pi16(mm0, PW_SEVEN); \
mm2 = _mm_add_pi16(mm2, PW_SEVEN); \
\
mm1 = _mm_add_pi16(mm1, mm7); \
mm5 = _mm_add_pi16(mm5, mm3); \
mm1 = _mm_srli_pi16(mm1, 4); /* mm1=OutrLE=( 0 2 4 6) */ \
mm5 = _mm_srli_pi16(mm5, 4); /* mm5=OutrHE=( 8 10 12 14) */ \
mm0 = _mm_add_pi16(mm0, mm7); \
mm2 = _mm_add_pi16(mm2, mm3); \
mm0 = _mm_srli_pi16(mm0, 4); /* mm0=OutrLO=( 1 3 5 7) */ \
mm2 = _mm_srli_pi16(mm2, 4); /* mm2=OutrHO=( 9 11 13 15) */ \
\
mm0 = _mm_slli_pi16(mm0, BYTE_BIT); \
mm2 = _mm_slli_pi16(mm2, BYTE_BIT); \
mm1 = _mm_or_si64(mm1, mm0); /* mm1=OutrL=( 0 1 2 3 4 5 6 7) */ \
mm5 = _mm_or_si64(mm5, mm2); /* mm5=OutrH=( 8 9 10 11 12 13 14 15) */ \
\
_mm_store_si64((__m64 *)outptr##r, mm1); \
_mm_store_si64((__m64 *)outptr##r + 1, mm5); \
}
void jsimd_h2v2_fancy_upsample_mmi(int max_v_samp_factor,
JDIMENSION downsampled_width,
JSAMPARRAY input_data,
JSAMPARRAY *output_data_ptr)
{
JSAMPARRAY output_data = *output_data_ptr;
JSAMPROW inptr_1, inptr0, inptr1, outptr0, outptr1;
int inrow, outrow, incol, tmp, tmp1;
__m64 mm0, mm1, mm2, mm3 = 0.0, mm4, mm5, mm6, mm7 = 0.0;
__m64 wk[4], mm_tmp;
for (inrow = 0, outrow = 0; outrow < max_v_samp_factor; inrow++) {
inptr_1 = input_data[inrow - 1];
inptr0 = input_data[inrow];
inptr1 = input_data[inrow + 1];
outptr0 = output_data[outrow++];
outptr1 = output_data[outrow++];
if (downsampled_width & 7) {
tmp = (downsampled_width - 1) * sizeof(JSAMPLE);
tmp1 = downsampled_width * sizeof(JSAMPLE);
asm("daddu $8, %3, %6\r\n"
"lb $9, ($8)\r\n"
"daddu $8, %3, %7\r\n"
"sb $9, ($8)\r\n"
"daddu $8, %4, %6\r\n"
"lb $9, ($8)\r\n"
"daddu $8, %4, %7\r\n"
"sb $9, ($8)\r\n"
"daddu $8, %5, %6\r\n"
"lb $9, ($8)\r\n"
"daddu $8, %5, %7\r\n"
"sb $9, ($8)\r\n"
: "=m" (*inptr_1), "=m" (*inptr0), "=m" (*inptr1)
: "r" (inptr_1), "r" (inptr0), "r" (inptr1), "r" (tmp), "r" (tmp1)
: "$8", "$9"
);
}
/* process the first column block */
mm0 = _mm_load_si64((__m64 *)inptr0); /* mm0 = row[ 0][0] */
mm1 = _mm_load_si64((__m64 *)inptr_1); /* mm1 = row[-1][0] */
mm2 = _mm_load_si64((__m64 *)inptr1); /* mm2 = row[ 1][0] */
mm3 = _mm_xor_si64(mm3, mm3); /* mm3 = (all 0's) */
mm4 = mm0;
mm0 = _mm_unpacklo_pi8(mm0, mm3); /* mm0 = row[ 0][0]( 0 1 2 3) */
mm4 = _mm_unpackhi_pi8(mm4, mm3); /* mm4 = row[ 0][0]( 4 5 6 7) */
mm5 = mm1;
mm1 = _mm_unpacklo_pi8(mm1, mm3); /* mm1 = row[-1][0]( 0 1 2 3) */
mm5 = _mm_unpackhi_pi8(mm5, mm3); /* mm5 = row[-1][0]( 4 5 6 7) */
mm6 = mm2;
mm2 = _mm_unpacklo_pi8(mm2, mm3); /* mm2 = row[+1][0]( 0 1 2 3) */
mm6 = _mm_unpackhi_pi8(mm6, mm3); /* mm6 = row[+1][0]( 4 5 6 7) */
mm0 = _mm_mullo_pi16(mm0, PW_THREE);
mm4 = _mm_mullo_pi16(mm4, PW_THREE);
mm7 = _mm_cmpeq_pi8(mm7, mm7);
mm7 = _mm_srli_si64(mm7, (SIZEOF_MMWORD - 2) * BYTE_BIT);
mm1 = _mm_add_pi16(mm1, mm0); /* mm1=Int0L=( 0 1 2 3) */
mm5 = _mm_add_pi16(mm5, mm4); /* mm5=Int0H=( 4 5 6 7) */
mm2 = _mm_add_pi16(mm2, mm0); /* mm2=Int1L=( 0 1 2 3) */
mm6 = _mm_add_pi16(mm6, mm4); /* mm6=Int1H=( 4 5 6 7) */
_mm_store_si64((__m64 *)outptr0, mm1); /* temporarily save */
_mm_store_si64((__m64 *)outptr0 + 1, mm5); /* the intermediate data */
_mm_store_si64((__m64 *)outptr1, mm2);
_mm_store_si64((__m64 *)outptr1 + 1, mm6);
mm1 = _mm_and_si64(mm1, mm7); /* mm1=( 0 - - -) */
mm2 = _mm_and_si64(mm2, mm7); /* mm2=( 0 - - -) */
wk[0] = mm1;
wk[1] = mm2;
for (incol = downsampled_width; incol > 0;
incol -= 8, inptr_1 += 8, inptr0 += 8, inptr1 += 8,
outptr0 += 16, outptr1 += 16) {
if (incol > 8) {
/* process the next column block */
mm0 = _mm_load_si64((__m64 *)inptr0 + 1); /* mm0 = row[ 0][1] */
mm1 = _mm_load_si64((__m64 *)inptr_1 + 1); /* mm1 = row[-1][1] */
mm2 = _mm_load_si64((__m64 *)inptr1 + 1); /* mm2 = row[+1][1] */
mm3 = _mm_setzero_si64(); /* mm3 = (all 0's) */
mm4 = mm0;
mm0 = _mm_unpacklo_pi8(mm0, mm3); /* mm0 = row[ 0][1]( 0 1 2 3) */
mm4 = _mm_unpackhi_pi8(mm4, mm3); /* mm4 = row[ 0][1]( 4 5 6 7) */
mm5 = mm1;
mm1 = _mm_unpacklo_pi8(mm1, mm3); /* mm1 = row[-1][1]( 0 1 2 3) */
mm5 = _mm_unpackhi_pi8(mm5, mm3); /* mm5 = row[-1][1]( 4 5 6 7) */
mm6 = mm2;
mm2 = _mm_unpacklo_pi8(mm2, mm3); /* mm2 = row[+1][1]( 0 1 2 3) */
mm6 = _mm_unpackhi_pi8(mm6, mm3); /* mm6 = row[+1][1]( 4 5 6 7) */
mm0 = _mm_mullo_pi16(mm0, PW_THREE);
mm4 = _mm_mullo_pi16(mm4, PW_THREE);
mm1 = _mm_add_pi16(mm1, mm0); /* mm1 = Int0L = ( 0 1 2 3) */
mm5 = _mm_add_pi16(mm5, mm4); /* mm5 = Int0H = ( 4 5 6 7) */
mm2 = _mm_add_pi16(mm2, mm0); /* mm2 = Int1L = ( 0 1 2 3) */
mm6 = _mm_add_pi16(mm6, mm4); /* mm6 = Int1H = ( 4 5 6 7) */
_mm_store_si64((__m64 *)outptr0 + 2, mm1); /* temporarily save */
_mm_store_si64((__m64 *)outptr0 + 3, mm5); /* the intermediate data */
_mm_store_si64((__m64 *)outptr1 + 2, mm2);
_mm_store_si64((__m64 *)outptr1 + 3, mm6);
mm1 = _mm_slli_si64(mm1, (SIZEOF_MMWORD - 2) * BYTE_BIT); /* mm1=( - - - 0) */
mm2 = _mm_slli_si64(mm2, (SIZEOF_MMWORD - 2) * BYTE_BIT); /* mm2=( - - - 0) */
wk[2] = mm1;
wk[3] = mm2;
} else {
/* process the last column block */
mm1 = _mm_cmpeq_pi8(mm1, mm1);
mm1 = _mm_slli_si64(mm1, (SIZEOF_MMWORD - 2) * BYTE_BIT);
mm2 = mm1;
mm_tmp = _mm_load_si64((__m64 *)outptr0 + 1);
mm1 = _mm_and_si64(mm1, mm_tmp); /* mm1=( - - - 7) */
mm_tmp = _mm_load_si64((__m64 *)outptr1 + 1);
mm2 = _mm_and_si64(mm2, mm_tmp); /* mm2=( - - - 7) */
wk[2] = mm1;
wk[3] = mm2;
}
/* process the upper row */
PROCESS_ROW(0)
/* process the lower row */
PROCESS_ROW(1)
}
}
}
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