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Optimize png16 with loongson mmi for 64-bit os

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gxw 2024-01-08 17:46:41 +08:00 committed by Cosmin Truta
parent 6b0d1bd75b
commit ce4b632dd7
9 changed files with 937 additions and 15 deletions
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41
CMakeLists.txt
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@ -227,19 +227,44 @@ if(TARGET_ARCH MATCHES "^(mipsel|mips64el)")
CACHE STRING "Enable MIPS_MSA optimizations: on|off; on is default")
set_property(CACHE PNG_MIPS_MSA
PROPERTY STRINGS ${PNG_MIPS_MSA_POSSIBLE_VALUES})
list(FIND PNG_MIPS_MSA_POSSIBLE_VALUES ${PNG_MIPS_MSA} index)
if(index EQUAL -1)
list(FIND PNG_MIPS_MSA_POSSIBLE_VALUES ${PNG_MIPS_MSA} index_msa)
if(index_msa EQUAL -1)
message(FATAL_ERROR "PNG_MIPS_MSA must be one of [${PNG_MIPS_MSA_POSSIBLE_VALUES}]")
elseif(NOT PNG_MIPS_MSA STREQUAL "off")
endif()
set(PNG_MIPS_MMI_POSSIBLE_VALUES on off)
set(PNG_MIPS_MMI "on"
CACHE STRING "Enable MIPS_MMI optimizations: on|off; on is default")
set_property(CACHE PNG_MIPS_MMI
PROPERTY STRINGS ${PNG_MIPS_MMI_POSSIBLE_VALUES})
list(FIND PNG_MIPS_MMI_POSSIBLE_VALUES ${PNG_MIPS_MMI} index_mmi)
if(index_mmi EQUAL -1)
message(FATAL_ERROR "PNG_MIPS_MMI must be one of [${PNG_MIPS_MMI_POSSIBLE_VALUES}]")
endif()
if(PNG_MIPS_MSA STREQUAL "on" AND PNG_MIPS_MMI STREQUAL "on")
set(libpng_mips_sources
mips/mips_init.c
mips/filter_msa_intrinsics.c
mips/filter_mmi_inline_assembly.c)
add_definitions(-DPNG_MIPS_MSA_OPT=2)
add_definitions(-DPNG_MIPS_MMI_OPT=1)
elseif(PNG_MIPS_MSA STREQUAL "on")
set(libpng_mips_sources
mips/mips_init.c
mips/filter_msa_intrinsics.c)
if(PNG_MIPS_MSA STREQUAL "on")
add_definitions(-DPNG_MIPS_MSA_OPT=2)
endif()
else()
add_definitions(-DPNG_MIPS_MSA_OPT=2)
add_definitions(-DPNG_MIPS_MMI_OPT=0)
elseif(PNG_MIPS_MMI STREQUAL "on")
set(libpng_mips_sources
mips/mips_init.c
mips/filter_mmi_inline_assembly.c)
add_definitions(-DPNG_MIPS_MSA_OPT=0)
endif()
add_definitions(-DPNG_MIPS_MMI_OPT=1)
else()
add_definitions(-DPNG_MIPS_MSA_OPT=0)
add_definitions(-DPNG_MIPS_MMI_OPT=0)
endif()
endif()
else(PNG_HARDWARE_OPTIMIZATIONS)

7
Makefile.am
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@ -117,6 +117,13 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += mips/mips_init.c\
mips/filter_msa_intrinsics.c
endif
if PNG_MIPS_MMI
if !PNG_MIPS_MSA
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += mips/mips_init.c
endif
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += mips/filter_mmi_inline_assembly.c
endif
if PNG_INTEL_SSE
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += intel/intel_init.c\
intel/filter_sse2_intrinsics.c

51
configure.ac
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@ -328,6 +328,9 @@ AC_ARG_ENABLE([hardware-optimizations],
enable_mips_msa=no
AC_DEFINE([PNG_MIPS_MSA_OPT], [0],
[Disable MIPS_MSA optimizations])
enable_mips_mmi=no
AC_DEFINE([PNG_MIPS_MMI_OPT], [0],
[Disable MIPS_MMI optimizations])
enable_powerpc_vsx=no
AC_DEFINE([PNG_POWERPC_VSX_OPT], [0],
[Disable POWERPC VSX optimizations])
@ -347,7 +350,10 @@ AC_ARG_ENABLE([hardware-optimizations],
[Enable ARM_NEON optimizations])
;;
mipsel*|mips64el*)
enable_mips_mmi=yes
enable_mips_msa=yes
AC_DEFINE([PNG_MIPS_MMI_OPT], [1],
[Enable MIPS_MMI optimizations])
AC_DEFINE([PNG_MIPS_MSA_OPT], [2],
[Enable MIPS_MSA optimizations])
;;
@ -461,6 +467,51 @@ AM_CONDITIONAL([PNG_MIPS_MSA],
mipsel*|mips64el*) : ;;
esac])
# MIPS
# ===
#
# MIPS MMI (SIMD) support.
AC_ARG_ENABLE([mips-mmi],
AS_HELP_STRING([[[--enable-mips-mmi]]],
[Enable MIPS MMI optimizations: =no/off, check, api, yes/on:]
[no/off: disable the optimizations; check: use internal checking code]
[(deprecated and poorly supported); api: disable by default, enable by]
[a call to png_set_option; yes/on: turn on unconditionally.]
[If not specified: determined by the compiler.]),
[case "$enableval" in
no|off)
# disable the default enabling on __mips_mmi systems:
AC_DEFINE([PNG_MIPS_MMI_OPT], [0],
[Disable MIPS MMI optimizations])
# Prevent inclusion of the assembler files below:
enable_mips_mmi=no;;
check)
AC_DEFINE([PNG_MIPS_MMI_CHECK_SUPPORTED], [],
[Check for MIPS MMI support at run-time]);;
api)
AC_DEFINE([PNG_MIPS_MMI_API_SUPPORTED], [],
[Turn on MIPS MMI optimizations at run-time]);;
yes|on)
AC_DEFINE([PNG_MIPS_MMI_OPT], [1],
[Enable MIPS MMI optimizations])
AC_MSG_WARN([--enable-mips-mmi: please specify 'check' or 'api', if]
[you want the optimizations unconditionally pass '-mloongson-mmi -march=loongson3a']
[to the compiler.]);;
*)
AC_MSG_ERROR([--enable-mips-mmi=${enable_mips_mmi}: invalid value])
esac])
# Add MIPS specific files to all builds where the host_cpu is mips ('mips*') or
# where MIPS optimizations were explicitly requested (this allows a fallback if a
# future host CPU does not match 'mips*')
AM_CONDITIONAL([PNG_MIPS_MMI],
[test "$enable_mips_mmi" != 'no' &&
case "$host_cpu" in
mipsel*|mips64el*) :;;
esac])
# INTEL
# =====
#

140
contrib/mips-mmi/linux.c Normal file
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@ -0,0 +1,140 @@
/* contrib/mips-mmi/linux.c
*
* Written by 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 <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/auxv.h>
/*
* parse_r var, r - Helper assembler macro for parsing register names.
*
* This converts the register name in $n form provided in \r to the
* corresponding register number, which is assigned to the variable \var. It is
* needed to allow explicit encoding of instructions in inline assembly where
* registers are chosen by the compiler in $n form, allowing us to avoid using
* fixed register numbers.
*
* It also allows newer instructions (not implemented by the assembler) to be
* transparently implemented using assembler macros, instead of needing separate
* cases depending on toolchain support.
*
* Simple usage example:
* __asm__ __volatile__("parse_r __rt, %0\n\t"
* ".insn\n\t"
* "# di %0\n\t"
* ".word (0x41606000 | (__rt << 16))"
* : "=r" (status);
*/
/* Match an individual register number and assign to \var */
#define _IFC_REG(n) \
".ifc \\r, $" #n "\n\t" \
"\\var = " #n "\n\t" \
".endif\n\t"
__asm__(".macro parse_r var r\n\t"
"\\var = -1\n\t"
_IFC_REG(0) _IFC_REG(1) _IFC_REG(2) _IFC_REG(3)
_IFC_REG(4) _IFC_REG(5) _IFC_REG(6) _IFC_REG(7)
_IFC_REG(8) _IFC_REG(9) _IFC_REG(10) _IFC_REG(11)
_IFC_REG(12) _IFC_REG(13) _IFC_REG(14) _IFC_REG(15)
_IFC_REG(16) _IFC_REG(17) _IFC_REG(18) _IFC_REG(19)
_IFC_REG(20) _IFC_REG(21) _IFC_REG(22) _IFC_REG(23)
_IFC_REG(24) _IFC_REG(25) _IFC_REG(26) _IFC_REG(27)
_IFC_REG(28) _IFC_REG(29) _IFC_REG(30) _IFC_REG(31)
".iflt \\var\n\t"
".error \"Unable to parse register name \\r\"\n\t"
".endif\n\t"
".endm");
#define HWCAP_LOONGSON_CPUCFG (1 << 14)
static int cpucfg_available(void)
{
return getauxval(AT_HWCAP) & HWCAP_LOONGSON_CPUCFG;
}
static int strstart(const char *str, const char *pfx, const char **ptr)
{
while (*pfx && *pfx == *str) {
pfx++;
str++;
}
if (!*pfx && ptr)
*ptr = str;
return !*pfx;
}
/* Most toolchains have no CPUCFG support yet */
static uint32_t read_cpucfg(uint32_t reg)
{
uint32_t __res;
__asm__ __volatile__(
"parse_r __res,%0\n\t"
"parse_r reg,%1\n\t"
".insn \n\t"
".word (0xc8080118 | (reg << 21) | (__res << 11))\n\t"
:"=r"(__res)
:"r"(reg)
:
);
return __res;
}
#define LOONGSON_CFG1 0x1
#define LOONGSON_CFG1_MMI (1 << 4)
static int cpu_flags_cpucfg(void)
{
int flags = 0;
uint32_t cfg1 = read_cpucfg(LOONGSON_CFG1);
if (cfg1 & LOONGSON_CFG1_MMI)
flags = 1;
return flags;
}
static int cpu_flags_cpuinfo(void)
{
FILE *f = fopen("/proc/cpuinfo", "r");
char buf[200];
int flags = 0;
if (!f)
return flags;
while (fgets(buf, sizeof(buf), f)) {
/* Legacy kernel may not export MMI in ASEs implemented */
if (strstart(buf, "cpu model", NULL)) {
if (strstr(buf, "Loongson-3 "))
flags = 1;
break;
}
if (strstart(buf, "ASEs implemented", NULL)) {
if (strstr(buf, " loongson-mmi"))
flags = 1;
break;
}
}
fclose(f);
return flags;
}
static int png_have_mmi()
{
if (cpucfg_available())
return cpu_flags_cpucfg();
else
return cpu_flags_cpuinfo();
return 0;
}

524
mips/filter_mmi_inline_assembly.c Normal file
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@ -0,0 +1,524 @@
/* filter_mmi_intrinsics.c - MMI optimized filter functions
*
* Written by zhanglixia and guxiwei
*
* 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 */

82
mips/mips_init.c
View File

@ -4,6 +4,7 @@
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2016 Glenn Randers-Pehrson
* Written by Mandar Sahastrabuddhe, 2016.
* Update by guxiwei, 2023.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@ -20,8 +21,9 @@
#ifdef PNG_READ_SUPPORTED
#if PNG_MIPS_MSA_OPT > 0
#ifdef PNG_MIPS_MSA_CHECK_SUPPORTED /* Do run-time checks */
#if PNG_MIPS_MSA_OPT > 0 || 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
@ -51,13 +53,83 @@ static int png_have_msa(png_structp png_ptr);
#endif /* PNG_MIPS_MSA_FILE */
#endif /* PNG_MIPS_MSA_CHECK_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; set: -DPNG_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_OPT > 0
/* 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 +197,8 @@ 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_OPT > 0 */
return;
}
#endif /* PNG_MIPS_MSA_OPT > 0 || PNG_MIPS_MMI_IMPLEMENTATION > 0 */
#endif /* READ */

6
png.h
View File

@ -3208,7 +3208,11 @@ PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory,
#ifdef PNG_POWERPC_VSX_API_SUPPORTED
# define PNG_POWERPC_VSX 10 /* HARDWARE: PowerPC VSX SIMD instructions supported */
#endif
#define PNG_OPTION_NEXT 12 /* Next option - numbers must be even */
#ifdef PNG_MIPS_MMI_API_SUPPORTED
# define PNG_MIPS_MMI 12 /* HARDWARE: MIPS MMI SIMD instructions supported */
#endif
#define PNG_OPTION_NEXT 14 /* Next option - numbers must be even */
/* Return values: NOTE: there are four values and 'off' is *not* zero */
#define PNG_OPTION_UNSET 0 /* Unset - defaults to off */

52
pngpriv.h
View File

@ -197,6 +197,16 @@
# endif
#endif
#ifndef PNG_MIPS_MMI_OPT
# ifdef PNG_MIPS_MMI
# if defined(__mips_loongson_mmi) && (_MIPS_SIM == _ABI64) && defined(PNG_ALIGNED_MEMORY_SUPPORTED)
# define PNG_MIPS_MMI_OPT 1
# else
# define PNG_MIPS_MMI_OPT 0
# endif
# endif
#endif
#ifndef PNG_POWERPC_VSX_OPT
# if defined(__PPC64__) && defined(__ALTIVEC__) && defined(__VSX__)
# define PNG_POWERPC_VSX_OPT 2
@ -248,7 +258,7 @@
#endif
#if PNG_MIPS_MSA_OPT > 0
# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_msa
# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_mips
# ifndef PNG_MIPS_MSA_IMPLEMENTATION
# if defined(__mips_msa)
# if defined(__clang__)
@ -269,6 +279,22 @@
# define PNG_MIPS_MSA_IMPLEMENTATION 0
#endif /* PNG_MIPS_MSA_OPT > 0 */
#if PNG_MIPS_MMI_OPT > 0
# ifndef PNG_MIPS_MMI_IMPLEMENTATION
# if defined(__mips_loongson_mmi) && (_MIPS_SIM == _ABI64)
# define PNG_MIPS_MMI_IMPLEMENTATION 2
# else /* !defined __mips_loongson_mmi || _MIPS_SIM != _ABI64 */
# define PNG_MIPS_MMI_IMPLEMENTATION 0
# endif /* __mips_loongson_mmi && _MIPS_SIM == _ABI64 */
# endif /* !PNG_MIPS_MMI_IMPLEMENTATION */
# if PNG_MIPS_MMI_IMPLEMENTATION > 0
# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_mips
# endif
#else
# define PNG_INTEL_SSE_IMPLEMENTATION 0
#endif /* PNG_MIPS_MMI_OPT > 0 */
#if PNG_POWERPC_VSX_OPT > 0
# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_vsx
# define PNG_POWERPC_VSX_IMPLEMENTATION 1
@ -1329,6 +1355,23 @@ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_msa,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
#if PNG_MIPS_MMI_IMPLEMENTATION > 0
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_mmi,(png_row_infop row_info,
png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
#if PNG_POWERPC_VSX_OPT > 0
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_vsx,(png_row_infop row_info,
png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
@ -2118,10 +2161,15 @@ PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_neon,
#endif
#if PNG_MIPS_MSA_OPT > 0
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_msa,
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_mips,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
#endif
# if PNG_MIPS_MMI_IMPLEMENTATION > 0
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_mips,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
# endif
# if PNG_INTEL_SSE_IMPLEMENTATION > 0
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_sse2,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);

49
scripts/pnglibconf.dfa
View File

@ -256,6 +256,55 @@ option POWERPC_VSX_API disabled enables SET_OPTION,
option POWERPC_VSX_CHECK disabled,
sets POWERPC_VSX_OPT 1
# These options are specific to the MIPS MSA hardware optimizations.
#
# MIPS_MSA_OPT: unset: check at compile time (__mips_msa must be defined by
# the compiler, typically as a result of specifying
# "-mmsa -mfp64" compiler flags)
# 0: disable (even if the CPU supports MSA.)
# 1: check at run time (via MIPS_MSA_{API,CHECK})
# 2: switch on unconditionally (inadvisable - instead pass
# -mmsa -mfp64 to compiler options)
# When building libpng avoid using any setting other than '0'; '1' is
# set automatically when either 'API' or 'CHECK' are configured in,
# '2' should not be necessary as "-mmsa -mfp64" will achieve the same
# effect as well as applying MSA optimizations to the rest of the
# libpng code.
# NOTE: any setting other than '0' requires ALIGNED_MEMORY
# MIPS_MSA_API: (PNG_MIPS_MSA == 1) allow the optimization to be switched on
# with png_set_option.
# MIPS_MSA_CHECK: (PNG_MIPS_MSA == 1) compile a run-time check to see if MSA
# extensions are supported.
setting MIPS_MSA_OPT
option MIPS_MSA_API disabled requires ALIGNED_MEMORY enables SET_OPTION,
sets MIPS_MSA_OPT 1
option MIPS_MSA_CHECK disabled requires ALIGNED_MEMORY,
sets MIPS_MSA_OPT 1
# These options are specific to the MIPS MMI hardware optimizations.
#
# MIPS_MMI_OPT: unset: check at compile time (__mips_loongson_mmi must be defined by
# the compiler, typically as a result of specifying
# "-mloongson-mmi -march=loongson3a" compiler flags)
# 0: disable (even if the CPU supports MMI.)
# 1: check at run time (via MIPS_MMI_{API,CHECK})
# 2: switch on unconditionally (inadvisable - instead pass
# -mloongson-mmi -march=loongson3a to compiler options)
# When building libpng avoid using any setting other than '0'; '1' is
# set automatically when either 'API' or 'CHECK' are configured in,
# '2' should not be necessary as "-mloongson-mmi -march=loongson3a" will achieve the same
# effect as well as applying MMI optimizations to the rest of the
# libpng code.
# MIPS_MMI_API: (PNG_MIPS_MMI == 1) allow the optimization to be switched on
# with png_set_option
# MIPS_MMI_CHECK: (PNG_MIPS_MMI == 1) compile a run-time check to see if MMI
# extensions are supported.
setting MIPS_MMI_OPT
option MIPS_MMI_API disabled requires ALIGNED_MEMORY enables SET_OPTION,
sets MIPS_MMI_OPT 1
option MIPS_MMI_CHECK disabled requires ALIGNED_MEMORY,
sets MIPS_MMI_OPT 1
# These settings configure the default compression level (0-9) and 'strategy';
# strategy is as defined by the implementors of zlib. It describes the input