update libpng

update libpng, the repo now requires a vcpkg setup for integrating but skipping the install step should allow it to work for windows an linux, mac might need more
This commit is contained in:
marauder2k7 2025-12-31 20:11:14 +00:00
parent c593d860a0
commit 5d644b4ffb
300 changed files with 25573 additions and 17698 deletions

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# https://editorconfig.org
root = false
# FIXME
[*.[ch]]
max_doc_length = unset
max_line_length = unset

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/* filter_mmi_intrinsics.c - MMI optimized filter functions
*
* Copyright (c) 2024 Cosmin Truta
* Written by zhanglixia and guxiwei, 2023
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
* and license in png.h
*/
#include "../pngpriv.h"
#ifdef PNG_READ_SUPPORTED
#if PNG_MIPS_MMI_IMPLEMENTATION == 2 /* Inline Assembly */
/* Functions in this file look at most 3 pixels (a,b,c) to predict the 4th (d).
* They're positioned like this:
* prev: c b
* row: a d
* The Sub filter predicts d=a, Avg d=(a+b)/2, and Paeth predicts d to be
* whichever of a, b, or c is closest to p=a+b-c.
*/
void png_read_filter_row_up_mmi(png_row_infop row_info, png_bytep row,
png_const_bytep prev_row)
{
int istop = row_info->rowbytes;
double rp,pp;
__asm__ volatile (
"1: \n\t"
"ldc1 %[rp], 0x00(%[row]) \n\t"
"ldc1 %[pp], 0x00(%[prev_row]) \n\t"
"paddb %[rp], %[rp], %[pp] \n\t"
"sdc1 %[rp], 0x00(%[row]) \n\t"
"daddiu %[row], %[row], 0x08 \n\t"
"daddiu %[prev_row], %[prev_row], 0x08 \n\t"
"daddiu %[istop], %[istop], -0x08 \n\t"
"bgtz %[istop], 1b \n\t"
: [rp]"=&f"(rp), [pp]"=&f"(pp)
: [row]"r"(row), [prev_row]"r"(prev_row),
[istop]"r"(istop)
: "memory"
);
}
void png_read_filter_row_sub3_mmi(png_row_infop row_info, png_bytep row,
png_const_bytep prev)
{
int istop = row_info->rowbytes;
double rp, pp, dest;
double eight, sixteen, twenty_four, forty_eight;
double tmp0;
double ftmp[2];
__asm__ volatile (
"li %[tmp0], 0x08 \n\t"
"dmtc1 %[tmp0], %[eight] \n\t"
"li %[tmp0], 0x10 \n\t"
"dmtc1 %[tmp0], %[sixteen] \n\t"
"li %[tmp0], 0x18 \n\t"
"dmtc1 %[tmp0], %[twenty_four] \n\t"
"li %[tmp0], 0x30 \n\t"
"dmtc1 %[tmp0], %[forty_eight] \n\t"
"xor %[dest], %[dest], %[dest] \n\t"
"1: \n\t"
"gsldrc1 %[rp], 0x00(%[row]) \n\t"
"gsldlc1 %[rp], 0x07(%[row]) \n\t"
"gsldrc1 %[pp], 0x08(%[row]) \n\t"
"gsldlc1 %[pp], 0x0f(%[row]) \n\t"
"paddb %[ftmp0], %[dest], %[rp] \n\t"
"swc1 %[ftmp0], 0x00(%[row]) \n\t"
"dsrl %[ftmp1], %[rp], %[twenty_four] \n\t"
"paddb %[dest], %[ftmp1], %[ftmp0] \n\t"
"gsswrc1 %[dest], 0x03(%[row]) \n\t"
"gsswlc1 %[dest], 0x06(%[row]) \n\t"
"dsrl %[ftmp0], %[rp], %[forty_eight] \n\t"
"dsll %[ftmp1], %[pp], %[sixteen] \n\t"
"or %[ftmp0], %[ftmp0], %[ftmp1] \n\t"
"paddb %[dest], %[dest], %[ftmp0] \n\t"
"gsswrc1 %[dest], 0x06(%[row]) \n\t"
"gsswlc1 %[dest], 0x09(%[row]) \n\t"
"dsrl %[ftmp0], %[pp], %[eight] \n\t"
"paddb %[dest], %[dest], %[ftmp0] \n\t"
"gsswrc1 %[dest], 0x09(%[row]) \n\t"
"daddiu %[row], %[row], 0x0c \n\t"
"daddiu %[istop], %[istop], -0x0c \n\t"
"bgtz %[istop], 1b \n\t"
: [rp]"=&f"(rp), [pp]"=&f"(pp), [dest]"=&f"(dest),
[tmp0]"=&r"(tmp0), [ftmp0]"=&f"(ftmp[0]),
[ftmp1]"=&f"(ftmp[1]), [eight]"=&f"(eight),
[sixteen]"=&f"(sixteen), [twenty_four]"=&f"(twenty_four),
[forty_eight]"=&f"(forty_eight)
: [row]"r"(row), [istop]"r"(istop)
: "memory"
);
PNG_UNUSED(prev)
}
void png_read_filter_row_sub4_mmi(png_row_infop row_info, png_bytep row,
png_const_bytep prev)
{
/* The Sub filter predicts each pixel as the previous pixel, a.
* There is no pixel to the left of the first pixel. It's encoded directly.
* That works with our main loop if we just say that left pixel was zero.
*/
int istop = row_info->rowbytes;
double rp,pp;
__asm__ volatile (
"1: \n\t"
"lwc1 %[pp], 0x00(%[row]) \n\t"
"lwc1 %[rp], 0x04(%[row]) \n\t"
"paddb %[rp], %[rp], %[pp] \n\t"
"swc1 %[rp], 0x04(%[row]) \n\t"
"daddiu %[row], %[row], 0x04 \n\t"
"daddiu %[istop], %[istop], -0x04 \n\t"
"bgtz %[istop], 1b \n\t"
: [rp]"=&f"(rp), [pp]"=&f"(pp)
: [row]"r"(row), [istop]"r"(istop)
: "memory"
);
PNG_UNUSED(prev)
}
void png_read_filter_row_avg3_mmi(png_row_infop row_info, png_bytep row,
png_const_bytep prev)
{
int istop = row_info->rowbytes;
double rp, pp, rp1, pp1;
double tmp0;
double ftmp[3];
double one, dest;
double eight, sixteen, twenty_four, forty_eight;
__asm__ volatile (
"li %[tmp0], 0x08 \n\t"
"dmtc1 %[tmp0], %[eight] \n\t"
"li %[tmp0], 0x10 \n\t"
"dmtc1 %[tmp0], %[sixteen] \n\t"
"li %[tmp0], 0x18 \n\t"
"dmtc1 %[tmp0], %[twenty_four] \n\t"
"li %[tmp0], 0x30 \n\t"
"dmtc1 %[tmp0], %[forty_eight] \n\t"
"xor %[dest], %[dest], %[dest] \n\t"
"li %[tmp0], 0x01 \n\t"
"ins %[tmp0], %[tmp0], 8, 8 \n\t"
"dmtc1 %[tmp0], %[one] \n\t"
"pshufh %[one], %[one], %[dest] \n\t"
"1: \n\t"
"gsldrc1 %[rp], 0x00(%[row]) \n\t"
"gsldlc1 %[rp], 0x07(%[row]) \n\t"
"gsldrc1 %[pp], 0x00(%[prev]) \n\t"
"gsldlc1 %[pp], 0x07(%[prev]) \n\t"
"gsldrc1 %[rp1], 0x08(%[row]) \n\t"
"gsldlc1 %[rp1], 0x0f(%[row]) \n\t"
"gsldrc1 %[pp1], 0x08(%[prev]) \n\t"
"gsldlc1 %[pp1], 0x0f(%[prev]) \n\t"
"xor %[ftmp0], %[pp], %[dest] \n\t"
"pavgb %[ftmp1], %[pp], %[dest] \n\t"
"and %[ftmp0], %[ftmp0], %[one] \n\t"
"psubb %[ftmp1], %[ftmp1], %[ftmp0] \n\t"
"paddb %[dest], %[rp], %[ftmp1] \n\t"
"swc1 %[dest], 0x00(%[row]) \n\t"
"dsrl %[ftmp0], %[rp], %[twenty_four] \n\t"
"dsrl %[ftmp1], %[pp], %[twenty_four] \n\t"
"xor %[ftmp2], %[ftmp1], %[dest] \n\t"
"pavgb %[ftmp1], %[ftmp1], %[dest] \n\t"
"and %[ftmp2], %[ftmp2], %[one] \n\t"
"psubb %[ftmp1], %[ftmp1], %[ftmp2] \n\t"
"paddb %[dest], %[ftmp0], %[ftmp1] \n\t"
"gsswrc1 %[dest], 0x03(%[row]) \n\t"
"gsswlc1 %[dest], 0x06(%[row]) \n\t"
"dsrl %[ftmp0], %[rp], %[forty_eight] \n\t"
"dsll %[ftmp1], %[rp1], %[sixteen] \n\t"
"or %[ftmp0], %[ftmp0], %[ftmp1] \n\t"
"dsrl %[ftmp2], %[pp], %[forty_eight] \n\t"
"dsll %[ftmp1], %[pp1], %[sixteen] \n\t"
"or %[ftmp1], %[ftmp2], %[ftmp1] \n\t"
"xor %[ftmp2], %[ftmp1], %[dest] \n\t"
"pavgb %[ftmp1], %[ftmp1], %[dest] \n\t"
"and %[ftmp2], %[ftmp2], %[one] \n\t"
"psubb %[ftmp1], %[ftmp1], %[ftmp2] \n\t"
"paddb %[dest], %[ftmp0], %[ftmp1] \n\t"
"gsswrc1 %[dest], 0x06(%[row]) \n\t"
"gsswlc1 %[dest], 0x09(%[row]) \n\t"
"dsrl %[ftmp0], %[rp1], %[eight] \n\t"
"dsrl %[ftmp1], %[pp1], %[eight] \n\t"
"xor %[ftmp2], %[ftmp1], %[dest] \n\t"
"pavgb %[ftmp1], %[ftmp1], %[dest] \n\t"
"and %[ftmp2], %[ftmp2], %[one] \n\t"
"psubb %[ftmp1], %[ftmp1], %[ftmp2] \n\t"
"paddb %[dest], %[ftmp0], %[ftmp1] \n\t"
"gsswrc1 %[dest], 0x09(%[row]) \n\t"
"daddiu %[row], %[row], 0x0c \n\t"
"daddiu %[prev], %[prev], 0x0c \n\t"
"daddiu %[istop], %[istop], -0x0c \n\t"
"bgtz %[istop], 1b \n\t"
: [rp]"=&f"(rp), [pp]"=&f"(pp), [rp1]"=&f"(rp1),
[pp1]"=&f"(pp1), [tmp0]"=&r"(tmp0), [ftmp0]"=&f"(ftmp[0]),
[ftmp1]"=&f"(ftmp[1]), [ftmp2]"=&f"(ftmp[2]), [one]"=&f"(one),
[dest]"=&f"(dest), [eight]"=&f"(eight), [sixteen]"=&f"(sixteen),
[twenty_four]"=&f"(twenty_four), [forty_eight]"=&f"(forty_eight)
: [row]"r"(row), [prev]"r"(prev), [istop]"r"(istop)
: "memory"
);
}
void png_read_filter_row_avg4_mmi(png_row_infop row_info, png_bytep row,
png_const_bytep prev)
{
int istop = row_info->rowbytes;
double rp,pp;
double dest;
double ftmp[2];
double tmp;
__asm__ volatile (
"xor %[dest], %[dest], %[dest] \n\t"
"li %[tmp], 0x01 \n\t"
"ins %[tmp], %[tmp], 8, 8 \n\t"
"dmtc1 %[tmp], %[ftmp1] \n\t"
"pshufh %[ftmp1], %[ftmp1], %[dest] \n\t"
"1: \n\t"
"lwc1 %[rp], 0x00(%[row]) \n\t"
"lwc1 %[pp], 0x00(%[prev]) \n\t"
"xor %[ftmp0], %[pp], %[dest] \n\t"
"pavgb %[pp], %[pp], %[dest] \n\t"
"and %[ftmp0], %[ftmp0], %[ftmp1] \n\t"
"psubb %[pp], %[pp], %[ftmp0] \n\t"
"paddb %[dest], %[rp], %[pp] \n\t"
"swc1 %[dest], 0x00(%[row]) \n\t"
"daddiu %[row], %[row], 0x04 \n\t"
"daddiu %[prev], %[prev], 0x04 \n\t"
"daddiu %[istop], %[istop], -0x04 \n\t"
"bgtz %[istop], 1b \n\t"
: [rp]"=&f"(rp), [pp]"=&f"(pp), [ftmp0]"=&f"(ftmp[0]),
[ftmp1]"=&f"(ftmp[1]), [dest]"=&f"(dest), [tmp]"=&r"(tmp)
: [row]"r"(row), [prev]"r"(prev), [istop]"r"(istop)
: "memory"
);
}
void png_read_filter_row_paeth3_mmi(png_row_infop row_info, png_bytep row,
png_const_bytep prev)
{
/* Paeth tries to predict pixel d using the pixel to the left of it, a,
* and two pixels from the previous row, b and c:
* prev: c b
* row: a d
* The Paeth function predicts d to be whichever of a, b, or c is nearest to
* p=a+b-c.
*
* The first pixel has no left context, and so uses an Up filter, p = b.
* This works naturally with our main loop's p = a+b-c if we force a and c
* to zero.
* Here we zero b and d, which become c and a respectively at the start of
* the loop.
*/
int istop = row_info->rowbytes;
double rp, pp, rp1, pp1, zero;
double a, b, c, d, pa, pb, pc;
double tmp0;
double ftmp[3];
double eight, sixteen, twenty_four, forty_eight;
__asm__ volatile (
"xor %[a], %[a], %[a] \n\t"
"xor %[c], %[c], %[c] \n\t"
"xor %[zero], %[zero], %[zero] \n\t"
"li %[tmp0], 0x08 \n\t"
"dmtc1 %[tmp0], %[eight] \n\t"
"li %[tmp0], 0x10 \n\t"
"dmtc1 %[tmp0], %[sixteen] \n\t"
"li %[tmp0], 0x18 \n\t"
"dmtc1 %[tmp0], %[twenty_four] \n\t"
"li %[tmp0], 0x30 \n\t"
"dmtc1 %[tmp0], %[forty_eight] \n\t"
"1: \n\t"
"gsldrc1 %[rp], 0x00(%[row]) \n\t"
"gsldlc1 %[rp], 0x07(%[row]) \n\t"
"gsldrc1 %[pp], 0x00(%[prev]) \n\t"
"gsldlc1 %[pp], 0x07(%[prev]) \n\t"
"gsldrc1 %[rp1], 0x08(%[row]) \n\t"
"gsldlc1 %[rp1], 0x0f(%[row]) \n\t"
"gsldrc1 %[pp1], 0x08(%[prev]) \n\t"
"gsldlc1 %[pp1], 0x0f(%[prev]) \n\t"
"punpcklbh %[b], %[pp], %[zero] \n\t"
"punpcklbh %[d], %[rp], %[zero] \n\t"
"packushb %[ftmp0], %[c], %[c] \n\t"
"packushb %[ftmp1], %[a], %[a] \n\t"
"pasubub %[pa], %[pp], %[ftmp0] \n\t"
"pasubub %[pb], %[ftmp1], %[ftmp0] \n\t"
"psubh %[ftmp0], %[b], %[c] \n\t"
"psubh %[ftmp1], %[a], %[c] \n\t"
"paddh %[pc], %[ftmp0], %[ftmp1] \n\t"
"pcmpgth %[ftmp0], %[zero], %[pc] \n\t"
"xor %[pc], %[pc], %[ftmp0] \n\t"
"psubh %[pc], %[pc], %[ftmp0] \n\t"
"punpcklbh %[pa], %[pa], %[zero] \n\t"
"punpcklbh %[pb], %[pb], %[zero] \n\t"
"pcmpgth %[ftmp0], %[pa], %[pb] \n\t"
"and %[ftmp1], %[b], %[ftmp0] \n\t"
"pandn %[a], %[ftmp0], %[a] \n\t"
"or %[a], %[a], %[ftmp1] \n\t"
"pminsh %[pa], %[pa], %[pb] \n\t"
"pcmpgth %[ftmp0], %[pa], %[pc] \n\t"
"and %[ftmp1], %[c], %[ftmp0] \n\t"
"pandn %[a], %[ftmp0], %[a] \n\t"
"or %[a], %[a], %[ftmp1] \n\t"
"paddb %[a], %[a], %[d] \n\t"
"packushb %[d], %[a], %[a] \n\t"
"punpcklbh %[c], %[pp], %[zero] \n\t"
"swc1 %[d], 0x00(%[row]) \n\t"
"dsrl %[ftmp0], %[rp], %[twenty_four] \n\t"
"dsrl %[ftmp2], %[pp], %[twenty_four] \n\t"
"punpcklbh %[b], %[ftmp2], %[zero] \n\t"
"punpcklbh %[d], %[ftmp0], %[zero] \n\t"
"packushb %[ftmp0], %[c], %[c] \n\t"
"packushb %[ftmp1], %[a], %[a] \n\t"
"pasubub %[pa], %[ftmp2], %[ftmp0] \n\t"
"pasubub %[pb], %[ftmp1], %[ftmp0] \n\t"
"psubh %[ftmp0], %[b], %[c] \n\t"
"psubh %[ftmp1], %[a], %[c] \n\t"
"paddh %[pc], %[ftmp0], %[ftmp1] \n\t"
"pcmpgth %[ftmp0], %[zero], %[pc] \n\t"
"xor %[pc], %[pc], %[ftmp0] \n\t"
"psubh %[pc], %[pc], %[ftmp0] \n\t"
"punpcklbh %[pa], %[pa], %[zero] \n\t"
"punpcklbh %[pb], %[pb], %[zero] \n\t"
"pcmpgth %[ftmp0], %[pa], %[pb] \n\t"
"and %[ftmp1], %[b], %[ftmp0] \n\t"
"pandn %[a], %[ftmp0], %[a] \n\t"
"or %[a], %[a], %[ftmp1] \n\t"
"pminsh %[pa], %[pa], %[pb] \n\t"
"pcmpgth %[ftmp0], %[pa], %[pc] \n\t"
"and %[ftmp1], %[c], %[ftmp0] \n\t"
"pandn %[a], %[ftmp0], %[a] \n\t"
"or %[a], %[a], %[ftmp1] \n\t"
"paddb %[a], %[a], %[d] \n\t"
"packushb %[d], %[a], %[a] \n\t"
"punpcklbh %[c], %[ftmp2], %[zero] \n\t"
"gsswrc1 %[d], 0x03(%[row]) \n\t"
"gsswlc1 %[d], 0x06(%[row]) \n\t"
"dsrl %[ftmp0], %[rp], %[forty_eight] \n\t"
"dsll %[ftmp1], %[rp1], %[sixteen] \n\t"
"or %[ftmp0], %[ftmp0], %[ftmp1] \n\t"
"dsrl %[ftmp2], %[pp], %[forty_eight] \n\t"
"dsll %[ftmp1], %[pp1], %[sixteen] \n\t"
"or %[ftmp2], %[ftmp2], %[ftmp1] \n\t"
"punpcklbh %[b], %[ftmp2], %[zero] \n\t"
"punpcklbh %[d], %[ftmp0], %[zero] \n\t"
"packushb %[ftmp0], %[c], %[c] \n\t"
"packushb %[ftmp1], %[a], %[a] \n\t"
"pasubub %[pa], %[ftmp2], %[ftmp0] \n\t"
"pasubub %[pb], %[ftmp1], %[ftmp0] \n\t"
"psubh %[ftmp0], %[b], %[c] \n\t"
"psubh %[ftmp1], %[a], %[c] \n\t"
"paddh %[pc], %[ftmp0], %[ftmp1] \n\t"
"pcmpgth %[ftmp0], %[zero], %[pc] \n\t"
"xor %[pc], %[pc], %[ftmp0] \n\t"
"psubh %[pc], %[pc], %[ftmp0] \n\t"
"punpcklbh %[pa], %[pa], %[zero] \n\t"
"punpcklbh %[pb], %[pb], %[zero] \n\t"
"pcmpgth %[ftmp0], %[pa], %[pb] \n\t"
"and %[ftmp1], %[b], %[ftmp0] \n\t"
"pandn %[a], %[ftmp0], %[a] \n\t"
"or %[a], %[a], %[ftmp1] \n\t"
"pminsh %[pa], %[pa], %[pb] \n\t"
"pcmpgth %[ftmp0], %[pa], %[pc] \n\t"
"and %[ftmp1], %[c], %[ftmp0] \n\t"
"pandn %[a], %[ftmp0], %[a] \n\t"
"or %[a], %[a], %[ftmp1] \n\t"
"paddb %[a], %[a], %[d] \n\t"
"packushb %[d], %[a], %[a] \n\t"
"punpcklbh %[c], %[ftmp2], %[zero] \n\t"
"gsswrc1 %[d], 0x06(%[row]) \n\t"
"gsswlc1 %[d], 0x09(%[row]) \n\t"
"dsrl %[ftmp0], %[rp1], %[eight] \n\t"
"dsrl %[ftmp2], %[pp1], %[eight] \n\t"
"punpcklbh %[b], %[ftmp2], %[zero] \n\t"
"punpcklbh %[d], %[ftmp0], %[zero] \n\t"
"packushb %[ftmp0], %[c], %[c] \n\t"
"packushb %[ftmp1], %[a], %[a] \n\t"
"pasubub %[pa], %[ftmp2], %[ftmp0] \n\t"
"pasubub %[pb], %[ftmp1], %[ftmp0] \n\t"
"psubh %[ftmp0], %[b], %[c] \n\t"
"psubh %[ftmp1], %[a], %[c] \n\t"
"paddh %[pc], %[ftmp0], %[ftmp1] \n\t"
"pcmpgth %[ftmp0], %[zero], %[pc] \n\t"
"xor %[pc], %[pc], %[ftmp0] \n\t"
"psubh %[pc], %[pc], %[ftmp0] \n\t"
"punpcklbh %[pa], %[pa], %[zero] \n\t"
"punpcklbh %[pb], %[pb], %[zero] \n\t"
"pcmpgth %[ftmp0], %[pa], %[pb] \n\t"
"and %[ftmp1], %[b], %[ftmp0] \n\t"
"pandn %[a], %[ftmp0], %[a] \n\t"
"or %[a], %[a], %[ftmp1] \n\t"
"pminsh %[pa], %[pa], %[pb] \n\t"
"pcmpgth %[ftmp0], %[pa], %[pc] \n\t"
"and %[ftmp1], %[c], %[ftmp0] \n\t"
"pandn %[a], %[ftmp0], %[a] \n\t"
"or %[a], %[a], %[ftmp1] \n\t"
"paddb %[a], %[a], %[d] \n\t"
"packushb %[d], %[a], %[a] \n\t"
"punpcklbh %[c], %[ftmp2], %[zero] \n\t"
"gsswrc1 %[d], 0x09(%[row]) \n\t"
"daddiu %[row], %[row], 0x0c \n\t"
"daddiu %[prev], %[prev], 0x0c \n\t"
"daddiu %[istop], %[istop], -0x0c \n\t"
"bgtz %[istop], 1b \n\t"
: [rp]"=&f"(rp), [pp]"=&f"(pp), [rp1]"=&f"(rp1), [pp1]"=&f"(pp1),
[zero]"=&f"(zero), [a]"=&f"(a),[b]"=&f"(b), [c]"=&f"(c),
[d]"=&f"(d), [pa]"=&f"(pa), [pb]"=&f"(pb), [pc]"=&f"(pc),
[tmp0]"=&r"(tmp0), [ftmp0]"=&f"(ftmp[0]), [ftmp1]"=&f"(ftmp[1]),
[ftmp2]"=&f"(ftmp[2]), [eight]"=&f"(eight), [sixteen]"=&f"(sixteen),
[twenty_four]"=&f"(twenty_four), [forty_eight]"=&f"(forty_eight)
: [row]"r"(row), [prev]"r"(prev), [istop]"r"(istop)
: "memory"
);
}
void png_read_filter_row_paeth4_mmi(png_row_infop row_info, png_bytep row,
png_const_bytep prev)
{
/* Paeth tries to predict pixel d using the pixel to the left of it, a,
* and two pixels from the previous row, b and c:
* prev: c b
* row: a d
* The Paeth function predicts d to be whichever of a, b, or c is nearest to
* p=a+b-c.
*
* The first pixel has no left context, and so uses an Up filter, p = b.
* This works naturally with our main loop's p = a+b-c if we force a and c
* to zero.
* Here we zero b and d, which become c and a respectively at the start of
* the loop.
*/
int istop = row_info->rowbytes;
double rp, pp, zero;
double a, b, c, d, pa, pb, pc;
double ftmp[2];
__asm__ volatile (
"xor %[a], %[a], %[a] \n\t"
"xor %[c], %[c], %[c] \n\t"
"xor %[zero], %[zero], %[zero] \n\t"
"1: \n\t"
"lwc1 %[rp], 0x00(%[row]) \n\t"
"lwc1 %[pp], 0x00(%[prev]) \n\t"
"punpcklbh %[b], %[pp], %[zero] \n\t"
"punpcklbh %[d], %[rp], %[zero] \n\t"
"packushb %[ftmp0], %[c], %[c] \n\t"
"packushb %[ftmp1], %[a], %[a] \n\t"
"pasubub %[pa], %[pp], %[ftmp0] \n\t"
"pasubub %[pb], %[ftmp1], %[ftmp0] \n\t"
"psubh %[ftmp0], %[b], %[c] \n\t"
"psubh %[ftmp1], %[a], %[c] \n\t"
"paddh %[pc], %[ftmp0], %[ftmp1] \n\t"
"pcmpgth %[ftmp0], %[zero], %[pc] \n\t"
"xor %[pc], %[pc], %[ftmp0] \n\t"
"psubh %[pc], %[pc], %[ftmp0] \n\t"
"punpcklbh %[pa], %[pa], %[zero] \n\t"
"punpcklbh %[pb], %[pb], %[zero] \n\t"
"pcmpgth %[ftmp0], %[pa], %[pb] \n\t"
"and %[ftmp1], %[b], %[ftmp0] \n\t"
"pandn %[a], %[ftmp0], %[a] \n\t"
"or %[a], %[a], %[ftmp1] \n\t"
"pminsh %[pa], %[pa], %[pb] \n\t"
"pcmpgth %[ftmp0], %[pa], %[pc] \n\t"
"and %[ftmp1], %[c], %[ftmp0] \n\t"
"pandn %[a], %[ftmp0], %[a] \n\t"
"or %[a], %[a], %[ftmp1] \n\t"
"paddb %[a], %[a], %[d] \n\t"
"packushb %[d], %[a], %[a] \n\t"
"swc1 %[d], 0x00(%[row]) \n\t"
"punpcklbh %[c], %[pp], %[zero] \n\t"
"daddiu %[row], %[row], 0x04 \n\t"
"daddiu %[prev], %[prev], 0x04 \n\t"
"daddiu %[istop], %[istop], -0x04 \n\t"
"bgtz %[istop], 1b \n\t"
: [rp]"=&f"(rp), [pp]"=&f"(pp), [zero]"=&f"(zero),
[a]"=&f"(a), [b]"=&f"(b), [c]"=&f"(c), [d]"=&f"(d),
[pa]"=&f"(pa), [pb]"=&f"(pb), [pc]"=&f"(pc),
[ftmp0]"=&f"(ftmp[0]), [ftmp1]"=&f"(ftmp[1])
: [row]"r"(row), [prev]"r"(prev), [istop]"r"(istop)
: "memory"
);
}
#endif /* PNG_MIPS_MMI_IMPLEMENTATION > 0 */
#endif /* READ */

View file

@ -1,9 +1,8 @@
/* filter_msa_intrinsics.c - MSA optimised filter functions
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 2016 Glenn Randers-Pehrson
* Written by Mandar Sahastrabuddhe, August 2016.
* Written by Mandar Sahastrabuddhe, August 2016
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@ -11,7 +10,6 @@
*/
#include <stdio.h>
#include <stdint.h>
#include "../pngpriv.h"
#ifdef PNG_READ_SUPPORTED
@ -20,6 +18,7 @@
#if PNG_MIPS_MSA_IMPLEMENTATION == 1 /* intrinsics code from pngpriv.h */
#include <msa.h>
#include <stdint.h>
/* libpng row pointers are not necessarily aligned to any particular boundary,
* however this code will only work with appropriate alignment. mips/mips_init.c
@ -47,7 +46,7 @@
uint8_t *psrc_lw_m = (uint8_t *) (psrc); \
uint32_t val_m; \
\
asm volatile ( \
__asm__ volatile ( \
"lw %[val_m], %[psrc_lw_m] \n\t" \
\
: [val_m] "=r" (val_m) \
@ -62,7 +61,7 @@
uint8_t *pdst_sh_m = (uint8_t *) (pdst); \
uint16_t val_m = (val); \
\
asm volatile ( \
__asm__ volatile ( \
"sh %[val_m], %[pdst_sh_m] \n\t" \
\
: [pdst_sh_m] "=m" (*pdst_sh_m) \
@ -75,7 +74,7 @@
uint8_t *pdst_sw_m = (uint8_t *) (pdst); \
uint32_t val_m = (val); \
\
asm volatile ( \
__asm__ volatile ( \
"sw %[val_m], %[pdst_sw_m] \n\t" \
\
: [pdst_sw_m] "=m" (*pdst_sw_m) \
@ -83,20 +82,20 @@
); \
}
#if (__mips == 64)
#if __mips == 64
#define SD(val, pdst) \
{ \
uint8_t *pdst_sd_m = (uint8_t *) (pdst); \
uint64_t val_m = (val); \
\
asm volatile ( \
__asm__ volatile ( \
"sd %[val_m], %[pdst_sd_m] \n\t" \
\
: [pdst_sd_m] "=m" (*pdst_sd_m) \
: [val_m] "r" (val_m) \
); \
}
#else
#else
#define SD(val, pdst) \
{ \
uint8_t *pdst_sd_m = (uint8_t *) (pdst); \
@ -108,17 +107,17 @@
SW(val0_m, pdst_sd_m); \
SW(val1_m, pdst_sd_m + 4); \
}
#endif
#endif /* __mips == 64 */
#else
#define MSA_SRLI_B(a, b) (a >> b)
#if (__mips_isa_rev >= 6)
#if __mips_isa_rev >= 6
#define LW(psrc) \
( { \
uint8_t *psrc_lw_m = (uint8_t *) (psrc); \
uint32_t val_m; \
\
asm volatile ( \
__asm__ volatile ( \
"lw %[val_m], %[psrc_lw_m] \n\t" \
\
: [val_m] "=r" (val_m) \
@ -133,7 +132,7 @@
uint8_t *pdst_sh_m = (uint8_t *) (pdst); \
uint16_t val_m = (val); \
\
asm volatile ( \
__asm__ volatile ( \
"sh %[val_m], %[pdst_sh_m] \n\t" \
\
: [pdst_sh_m] "=m" (*pdst_sh_m) \
@ -146,7 +145,7 @@
uint8_t *pdst_sw_m = (uint8_t *) (pdst); \
uint32_t val_m = (val); \
\
asm volatile ( \
__asm__ volatile ( \
"sw %[val_m], %[pdst_sw_m] \n\t" \
\
: [pdst_sw_m] "=m" (*pdst_sw_m) \
@ -154,20 +153,20 @@
); \
}
#if (__mips == 64)
#if __mips == 64
#define SD(val, pdst) \
{ \
uint8_t *pdst_sd_m = (uint8_t *) (pdst); \
uint64_t val_m = (val); \
\
asm volatile ( \
__asm__ volatile ( \
"sd %[val_m], %[pdst_sd_m] \n\t" \
\
: [pdst_sd_m] "=m" (*pdst_sd_m) \
: [val_m] "r" (val_m) \
); \
}
#else
#else
#define SD(val, pdst) \
{ \
uint8_t *pdst_sd_m = (uint8_t *) (pdst); \
@ -179,14 +178,14 @@
SW(val0_m, pdst_sd_m); \
SW(val1_m, pdst_sd_m + 4); \
}
#endif
#else // !(__mips_isa_rev >= 6)
#endif /* __mips == 64 */
#else
#define LW(psrc) \
( { \
uint8_t *psrc_lw_m = (uint8_t *) (psrc); \
uint32_t val_m; \
\
asm volatile ( \
__asm__ volatile ( \
"ulw %[val_m], %[psrc_lw_m] \n\t" \
\
: [val_m] "=r" (val_m) \
@ -201,7 +200,7 @@
uint8_t *pdst_sh_m = (uint8_t *) (pdst); \
uint16_t val_m = (val); \
\
asm volatile ( \
__asm__ volatile ( \
"ush %[val_m], %[pdst_sh_m] \n\t" \
\
: [pdst_sh_m] "=m" (*pdst_sh_m) \
@ -214,7 +213,7 @@
uint8_t *pdst_sw_m = (uint8_t *) (pdst); \
uint32_t val_m = (val); \
\
asm volatile ( \
__asm__ volatile ( \
"usw %[val_m], %[pdst_sw_m] \n\t" \
\
: [pdst_sw_m] "=m" (*pdst_sw_m) \
@ -222,7 +221,7 @@
); \
}
#define SD(val, pdst) \
#define SD(val, pdst) \
{ \
uint8_t *pdst_sd_m = (uint8_t *) (pdst); \
uint32_t val0_m, val1_m; \
@ -238,14 +237,14 @@
{ \
uint8_t *pdst_m = (uint8_t *) (pdst); \
\
asm volatile ( \
__asm__ volatile ( \
"usw $0, %[pdst_m] \n\t" \
\
: [pdst_m] "=m" (*pdst_m) \
: \
); \
}
#endif // (__mips_isa_rev >= 6)
#endif /* __mips_isa_rev >= 6 */
#endif
#define LD_B(RTYPE, psrc) *((RTYPE *) (psrc))
@ -379,8 +378,8 @@ void png_read_filter_row_up_msa(png_row_infop row_info, png_bytep row,
LD_UB4(pp, 16, src4, src5, src6, src7);
pp += 64;
ADD4(src0, src4, src1, src5, src2, src6, src3, src7,
src0, src1, src2, src3);
ADD4(src0, src4, src1, src5, src2, src6, src3, src7,
src0, src1, src2, src3);
ST_UB4(src0, src1, src2, src3, rp, 16);
rp += 64;
@ -400,7 +399,7 @@ void png_read_filter_row_up_msa(png_row_infop row_info, png_bytep row,
LD_UB4(pp, 16, src4, src5, src6, src7);
ADD4(src0, src4, src1, src5, src2, src6, src3, src7,
src0, src1, src2, src3);
src0, src1, src2, src3);
ST_UB4(src0, src1, src2, src3, rp, 16);
rp += 64;
@ -425,7 +424,7 @@ void png_read_filter_row_up_msa(png_row_infop row_info, png_bytep row,
LD_UB2(rp, 16, src0, src1);
LD_UB2(pp, 16, src4, src5);
ADD2(src0, src4, src1, src5, src0, src1);
ADD2(src0, src4, src1, src5, src0, src1);
ST_UB2(src0, src1, rp, 16);
rp += 32;

View file

@ -1,9 +1,9 @@
/* mips_init.c - MSA optimised filter functions
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 2016 Glenn Randers-Pehrson
* Written by Mandar Sahastrabuddhe, 2016.
* Written by Mandar Sahastrabuddhe, 2016
* Updated by guxiwei, 2023
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@ -20,8 +20,9 @@
#ifdef PNG_READ_SUPPORTED
#if PNG_MIPS_MSA_OPT > 0
#ifdef PNG_MIPS_MSA_CHECK_SUPPORTED /* Do run-time checks */
#if PNG_MIPS_MSA_IMPLEMENTATION == 1 || PNG_MIPS_MMI_IMPLEMENTATION > 0
#ifdef PNG_MIPS_MSA_CHECK_SUPPORTED /* Do MIPS MSA run-time checks */
/* WARNING: it is strongly recommended that you do not build libpng with
* run-time checks for CPU features if at all possible. In the case of the MIPS
* MSA instructions there is no processor-specific way of detecting the
@ -47,17 +48,87 @@ static int png_have_msa(png_structp png_ptr);
#include PNG_MIPS_MSA_FILE
#else /* PNG_MIPS_MSA_FILE */
# error "PNG_MIPS_MSA_FILE undefined: no support for run-time MIPS MSA checks"
# error PNG_MIPS_MSA_FILE undefined: no support for run-time MIPS MSA checks
#endif /* PNG_MIPS_MSA_FILE */
#endif /* PNG_MIPS_MSA_CHECK_SUPPORTED */
#ifndef PNG_ALIGNED_MEMORY_SUPPORTED
# error "ALIGNED_MEMORY is required; set: -DPNG_ALIGNED_MEMORY_SUPPORTED"
#ifdef PNG_MIPS_MMI_CHECK_SUPPORTED /* Do MIPS MMI run-times checks */
#ifndef PNG_MIPS_MMI_FILE
# ifdef __linux__
# define PNG_MIPS_MMI_FILE "contrib/mips-mmi/linux.c"
# endif
#endif
#ifdef PNG_MIPS_MMI_FILE
#include <signal.h> /* for sig_atomic_t */
static int png_have_mmi();
#include PNG_MIPS_MMI_FILE
#else /* PNG_MIPS_MMI_FILE */
# error PNG_MIPS_MMI_FILE undefined: no support for run-time MIPS MMI checks
#endif /* PNG_MIPS_MMI_FILE */
#endif /* PNG_MIPS_MMI_CHECK_SUPPORTED*/
#ifndef PNG_ALIGNED_MEMORY_SUPPORTED
# error ALIGNED_MEMORY is required; please define PNG_ALIGNED_MEMORY_SUPPORTED
#endif
/* MIPS supports two optimizations: MMI and MSA. The appropriate
* optimization is chosen at runtime
*/
void
png_init_filter_functions_msa(png_structp pp, unsigned int bpp)
png_init_filter_functions_mips(png_structp pp, unsigned int bpp)
{
#if PNG_MIPS_MMI_IMPLEMENTATION > 0
#ifdef PNG_MIPS_MMI_API_SUPPORTED
switch ((pp->options >> PNG_MIPS_MMI) & 3)
{
case PNG_OPTION_UNSET:
#endif /* PNG_MIPS_MMI_API_SUPPORTED */
#ifdef PNG_MIPS_MMI_CHECK_SUPPORTED
{
static volatile sig_atomic_t no_mmi = -1; /* not checked */
if (no_mmi < 0)
no_mmi = !png_have_mmi();
if (no_mmi)
goto MIPS_MSA_INIT;
}
#ifdef PNG_MIPS_MMI_API_SUPPORTED
break;
#endif
#endif /* PNG_MIPS_MMI_CHECK_SUPPORTED */
#ifdef PNG_MIPS_MMI_API_SUPPORTED
default: /* OFF or INVALID */
goto MIPS_MSA_INIT;
case PNG_OPTION_ON:
/* Option turned on */
break;
}
#endif
pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_mmi;
if (bpp == 3)
{
pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_mmi;
pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_mmi;
pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
png_read_filter_row_paeth3_mmi;
}
else if (bpp == 4)
{
pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_mmi;
pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_mmi;
pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
png_read_filter_row_paeth4_mmi;
}
#endif /* PNG_MIPS_MMI_IMPLEMENTATION > 0 */
MIPS_MSA_INIT:
#if PNG_MIPS_MSA_IMPLEMENTATION == 1
/* The switch statement is compiled in for MIPS_MSA_API, the call to
* png_have_msa is compiled in for MIPS_MSA_CHECK. If both are defined
* the check is only performed if the API has not set the MSA option on
@ -125,6 +196,8 @@ png_init_filter_functions_msa(png_structp pp, unsigned int bpp)
pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_msa;
pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = png_read_filter_row_paeth4_msa;
}
#endif /* PNG_MIPS_MSA_IMPLEMENTATION == 1 */
return;
}
#endif /* PNG_MIPS_MSA_OPT > 0 */
#endif /* PNG_MIPS_MSA_IMPLEMENTATION == 1 || PNG_MIPS_MMI_IMPLEMENTATION > 0 */
#endif /* READ */