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Global: Add back arm files for libpng.
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133
ext/libpng17/arm/arm_init.c
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133
ext/libpng17/arm/arm_init.c
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@ -0,0 +1,133 @@
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/* arm_init.c - NEON optimised filter functions
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*
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* Copyright (c) 2014 Glenn Randers-Pehrson
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* Written by Mans Rullgard, 2011.
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* Last changed in libpng 1.6.10 [(PENDING RELEASE)]
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*
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* This code is released under the libpng license.
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* For conditions of distribution and use, see the disclaimer
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* and license in png.h
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*/
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/* Below, after checking __linux__, various non-C90 POSIX 1003.1 functions are
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* called.
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*/
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#define _POSIX_SOURCE 1
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#include "../pngpriv.h"
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#ifdef PNG_READ_SUPPORTED
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#if PNG_ARM_NEON_OPT > 0
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#ifdef PNG_ARM_NEON_CHECK_SUPPORTED /* Do run-time checks */
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/* WARNING: it is strongly recommended that you do not build libpng with
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* run-time checks for CPU features if at all possible. In the case of the ARM
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* NEON instructions there is no processor-specific way of detecting the
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* presence of the required support, therefore run-time detection is extremely
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* OS specific.
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*
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* You may set the macro PNG_ARM_NEON_FILE to the file name of file containing
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* a fragment of C source code which defines the png_have_neon function. There
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* are a number of implementations in contrib/arm-neon, but the only one that
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* has partial support is contrib/arm-neon/linux.c - a generic Linux
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* implementation which reads /proc/cpufino.
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*/
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#ifndef PNG_ARM_NEON_FILE
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# ifdef __linux__
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# define PNG_ARM_NEON_FILE "contrib/arm-neon/linux.c"
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# endif
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#endif
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#ifdef PNG_ARM_NEON_FILE
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#include <signal.h> /* for sig_atomic_t */
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static int png_have_neon(png_structp png_ptr);
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#include PNG_ARM_NEON_FILE
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#else /* PNG_ARM_NEON_FILE */
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# error "PNG_ARM_NEON_FILE undefined: no support for run-time ARM NEON checks"
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#endif /* PNG_ARM_NEON_FILE */
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#endif /* PNG_ARM_NEON_CHECK_SUPPORTED */
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#ifndef PNG_ALIGNED_MEMORY_SUPPORTED
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# error "ALIGNED_MEMORY is required; set: -DPNG_ALIGNED_MEMORY_SUPPORTED"
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#endif
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void
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png_init_filter_functions_neon(png_structp pp, unsigned int bpp)
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{
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/* The switch statement is compiled in for ARM_NEON_API, the call to
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* png_have_neon is compiled in for ARM_NEON_CHECK. If both are defined
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* the check is only performed if the API has not set the NEON option on
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* or off explicitly. In this case the check controls what happens.
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*
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* If the CHECK is not compiled in and the option is UNSET the behavior prior
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* to 1.6.7 was to use the NEON code - this was a bug caused by having the
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* wrong order of the 'ON' and 'default' cases. UNSET now defaults to OFF,
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* as documented in png.h
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*/
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#ifdef PNG_ARM_NEON_API_SUPPORTED
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switch ((pp->options >> PNG_ARM_NEON) & 3)
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{
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case PNG_OPTION_UNSET:
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/* Allow the run-time check to execute if it has been enabled -
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* thus both API and CHECK can be turned on. If it isn't supported
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* this case will fall through to the 'default' below, which just
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* returns.
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*/
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#endif /* PNG_ARM_NEON_API_SUPPORTED */
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#ifdef PNG_ARM_NEON_CHECK_SUPPORTED
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{
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static volatile sig_atomic_t no_neon = -1; /* not checked */
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if (no_neon < 0)
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no_neon = !png_have_neon(pp);
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if (no_neon)
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return;
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}
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#ifdef PNG_ARM_NEON_API_SUPPORTED
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break;
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#endif
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#endif /* PNG_ARM_NEON_CHECK_SUPPORTED */
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#ifdef PNG_ARM_NEON_API_SUPPORTED
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default: /* OFF or INVALID */
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return;
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case PNG_OPTION_ON:
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/* Option turned on */
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break;
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}
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#endif
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/* IMPORTANT: any new external functions used here must be declared using
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* PNG_INTERNAL_FUNCTION in ../pngpriv.h. This is required so that the
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* 'prefix' option to configure works:
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*
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* ./configure --with-libpng-prefix=foobar_
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*
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* Verify you have got this right by running the above command, doing a build
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* and examining pngprefix.h; it must contain a #define for every external
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* function you add. (Notice that this happens automatically for the
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* initialization function.)
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*/
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pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_neon;
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if (bpp == 3)
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{
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pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_neon;
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pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_neon;
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pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
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png_read_filter_row_paeth3_neon;
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}
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else if (bpp == 4)
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{
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pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_neon;
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pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_neon;
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pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
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png_read_filter_row_paeth4_neon;
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}
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}
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#endif /* PNG_ARM_NEON_OPT > 0 */
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#endif /* PNG_READ_SUPPORTED */
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246
ext/libpng17/arm/filter_neon.S
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246
ext/libpng17/arm/filter_neon.S
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@ -0,0 +1,246 @@
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/* filter_neon.S - NEON optimised filter functions
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*
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* Copyright (c) 2013 Glenn Randers-Pehrson
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* Written by Mans Rullgard, 2011.
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* Last changed in libpng 1.6.8 [December 19, 2013]
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*
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* This code is released under the libpng license.
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* For conditions of distribution and use, see the disclaimer
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* and license in png.h
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*/
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/* This is required to get the symbol renames, which are #defines, and also
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* includes the definition (or not) of PNG_ARM_NEON_OPT and
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* PNG_ARM_NEON_IMPLEMENTATION.
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*/
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#define PNG_VERSION_INFO_ONLY
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#include "../pngpriv.h"
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#if defined(__linux__) && defined(__ELF__)
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.section .note.GNU-stack,"",%progbits /* mark stack as non-executable */
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#endif
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/* Assembler NEON support - only works for 32-bit ARM (i.e. it does not work for
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* ARM64). The code in arm/filter_neon_intrinsics.c supports ARM64, however it
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* only works if -mfpu=neon is specified on the GCC command line. See pngpriv.h
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* for the logic which sets PNG_USE_ARM_NEON_ASM:
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*/
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#if PNG_ARM_NEON_IMPLEMENTATION == 2 /* hand-coded assembler */
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#ifdef PNG_READ_SUPPORTED
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#if PNG_ARM_NEON_OPT > 0
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#ifdef __ELF__
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# define ELF
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#else
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# define ELF @
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#endif
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.arch armv7-a
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.fpu neon
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.macro func name, export=0
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.macro endfunc
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ELF .size \name, . - \name
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.endfunc
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.purgem endfunc
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.endm
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.text
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.if \export
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.global \name
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.endif
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ELF .type \name, STT_FUNC
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.func \name
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\name:
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.endm
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func png_read_filter_row_sub4_neon, export=1
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ldr r3, [r0, #4] @ rowbytes
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vmov.i8 d3, #0
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1:
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vld4.32 {d4[],d5[],d6[],d7[]}, [r1,:128]
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vadd.u8 d0, d3, d4
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vadd.u8 d1, d0, d5
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vadd.u8 d2, d1, d6
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vadd.u8 d3, d2, d7
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vst4.32 {d0[0],d1[0],d2[0],d3[0]},[r1,:128]!
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subs r3, r3, #16
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bgt 1b
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bx lr
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endfunc
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func png_read_filter_row_sub3_neon, export=1
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ldr r3, [r0, #4] @ rowbytes
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vmov.i8 d3, #0
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mov r0, r1
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mov r2, #3
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mov r12, #12
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vld1.8 {q11}, [r0], r12
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1:
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vext.8 d5, d22, d23, #3
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vadd.u8 d0, d3, d22
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vext.8 d6, d22, d23, #6
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vadd.u8 d1, d0, d5
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vext.8 d7, d23, d23, #1
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vld1.8 {q11}, [r0], r12
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vst1.32 {d0[0]}, [r1,:32], r2
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vadd.u8 d2, d1, d6
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vst1.32 {d1[0]}, [r1], r2
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vadd.u8 d3, d2, d7
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vst1.32 {d2[0]}, [r1], r2
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vst1.32 {d3[0]}, [r1], r2
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subs r3, r3, #12
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bgt 1b
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bx lr
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endfunc
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func png_read_filter_row_up_neon, export=1
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ldr r3, [r0, #4] @ rowbytes
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1:
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vld1.8 {q0}, [r1,:128]
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vld1.8 {q1}, [r2,:128]!
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vadd.u8 q0, q0, q1
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vst1.8 {q0}, [r1,:128]!
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subs r3, r3, #16
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bgt 1b
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bx lr
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endfunc
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func png_read_filter_row_avg4_neon, export=1
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ldr r12, [r0, #4] @ rowbytes
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vmov.i8 d3, #0
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1:
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vld4.32 {d4[],d5[],d6[],d7[]}, [r1,:128]
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vld4.32 {d16[],d17[],d18[],d19[]},[r2,:128]!
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vhadd.u8 d0, d3, d16
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vadd.u8 d0, d0, d4
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vhadd.u8 d1, d0, d17
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vadd.u8 d1, d1, d5
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vhadd.u8 d2, d1, d18
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vadd.u8 d2, d2, d6
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vhadd.u8 d3, d2, d19
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vadd.u8 d3, d3, d7
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vst4.32 {d0[0],d1[0],d2[0],d3[0]},[r1,:128]!
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subs r12, r12, #16
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bgt 1b
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bx lr
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endfunc
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func png_read_filter_row_avg3_neon, export=1
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push {r4,lr}
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ldr r12, [r0, #4] @ rowbytes
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vmov.i8 d3, #0
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mov r0, r1
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mov r4, #3
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mov lr, #12
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vld1.8 {q11}, [r0], lr
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1:
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vld1.8 {q10}, [r2], lr
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vext.8 d5, d22, d23, #3
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vhadd.u8 d0, d3, d20
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vext.8 d17, d20, d21, #3
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vadd.u8 d0, d0, d22
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vext.8 d6, d22, d23, #6
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vhadd.u8 d1, d0, d17
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vext.8 d18, d20, d21, #6
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vadd.u8 d1, d1, d5
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vext.8 d7, d23, d23, #1
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vld1.8 {q11}, [r0], lr
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vst1.32 {d0[0]}, [r1,:32], r4
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vhadd.u8 d2, d1, d18
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vst1.32 {d1[0]}, [r1], r4
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vext.8 d19, d21, d21, #1
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vadd.u8 d2, d2, d6
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vhadd.u8 d3, d2, d19
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vst1.32 {d2[0]}, [r1], r4
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vadd.u8 d3, d3, d7
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vst1.32 {d3[0]}, [r1], r4
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subs r12, r12, #12
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bgt 1b
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pop {r4,pc}
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endfunc
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.macro paeth rx, ra, rb, rc
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vaddl.u8 q12, \ra, \rb @ a + b
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vaddl.u8 q15, \rc, \rc @ 2*c
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vabdl.u8 q13, \rb, \rc @ pa
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vabdl.u8 q14, \ra, \rc @ pb
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vabd.u16 q15, q12, q15 @ pc
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vcle.u16 q12, q13, q14 @ pa <= pb
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vcle.u16 q13, q13, q15 @ pa <= pc
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vcle.u16 q14, q14, q15 @ pb <= pc
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vand q12, q12, q13 @ pa <= pb && pa <= pc
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vmovn.u16 d28, q14
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vmovn.u16 \rx, q12
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vbsl d28, \rb, \rc
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vbsl \rx, \ra, d28
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.endm
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func png_read_filter_row_paeth4_neon, export=1
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ldr r12, [r0, #4] @ rowbytes
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vmov.i8 d3, #0
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vmov.i8 d20, #0
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1:
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vld4.32 {d4[],d5[],d6[],d7[]}, [r1,:128]
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vld4.32 {d16[],d17[],d18[],d19[]},[r2,:128]!
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paeth d0, d3, d16, d20
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vadd.u8 d0, d0, d4
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paeth d1, d0, d17, d16
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vadd.u8 d1, d1, d5
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paeth d2, d1, d18, d17
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vadd.u8 d2, d2, d6
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paeth d3, d2, d19, d18
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vmov d20, d19
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vadd.u8 d3, d3, d7
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vst4.32 {d0[0],d1[0],d2[0],d3[0]},[r1,:128]!
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subs r12, r12, #16
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bgt 1b
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bx lr
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endfunc
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func png_read_filter_row_paeth3_neon, export=1
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push {r4,lr}
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ldr r12, [r0, #4] @ rowbytes
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vmov.i8 d3, #0
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vmov.i8 d4, #0
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mov r0, r1
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mov r4, #3
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mov lr, #12
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vld1.8 {q11}, [r0], lr
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1:
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vld1.8 {q10}, [r2], lr
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paeth d0, d3, d20, d4
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vext.8 d5, d22, d23, #3
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vadd.u8 d0, d0, d22
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vext.8 d17, d20, d21, #3
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paeth d1, d0, d17, d20
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vst1.32 {d0[0]}, [r1,:32], r4
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vext.8 d6, d22, d23, #6
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vadd.u8 d1, d1, d5
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vext.8 d18, d20, d21, #6
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paeth d2, d1, d18, d17
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vext.8 d7, d23, d23, #1
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vld1.8 {q11}, [r0], lr
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vst1.32 {d1[0]}, [r1], r4
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vadd.u8 d2, d2, d6
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vext.8 d19, d21, d21, #1
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paeth d3, d2, d19, d18
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vst1.32 {d2[0]}, [r1], r4
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vmov d4, d19
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vadd.u8 d3, d3, d7
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vst1.32 {d3[0]}, [r1], r4
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subs r12, r12, #12
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bgt 1b
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pop {r4,pc}
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endfunc
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#endif /* PNG_ARM_NEON_OPT > 0 */
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#endif /* PNG_READ_SUPPORTED */
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#endif /* PNG_ARM_NEON_IMPLEMENTATION == 2 (assembler) */
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376
ext/libpng17/arm/filter_neon_intrinsics.c
Normal file
376
ext/libpng17/arm/filter_neon_intrinsics.c
Normal file
@ -0,0 +1,376 @@
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/* filter_neon_intrinsics.c - NEON optimised filter functions
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*
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* Copyright (c) 2013 Glenn Randers-Pehrson
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* Written by James Yu <james.yu at linaro.org>, October 2013.
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* Based on filter_neon.S, written by Mans Rullgard, 2011.
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*
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* Last changed in libpng 1.6.8 [December 19, 2013]
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*
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* This code is released under the libpng license.
|
||||
* For conditions of distribution and use, see the disclaimer
|
||||
* and license in png.h
|
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*/
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#include "../pngpriv.h"
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/* This code requires -mfpu=neon on the command line: */
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#if PNG_ARM_NEON_IMPLEMENTATION == 1 /* intrinsics code from pngpriv.h */
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#if defined(_MSC_VER) && defined(_M_ARM64)
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#include <arm64_neon.h>
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#else
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#include <arm_neon.h>
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#endif
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/* libpng row pointers are not necessarily aligned to any particular boundary,
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* however this code will only work with appropriate alignment. arm/arm_init.c
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* checks for this (and will not compile unless it is done). This code uses
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* variants of png_aligncast to avoid compiler warnings.
|
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*/
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#define png_ptr(type,pointer) png_aligncast(type *,pointer)
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#define png_ptrc(type,pointer) png_aligncastconst(const type *,pointer)
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|
||||
/* The following relies on a variable 'temp_pointer' being declared with type
|
||||
* 'type'. This is written this way just to hide the GCC strict aliasing
|
||||
* warning; note that the code is safe because there never is an alias between
|
||||
* the input and output pointers.
|
||||
*/
|
||||
#define png_ldr(type,pointer)\
|
||||
(temp_pointer = png_ptr(type,pointer), *temp_pointer)
|
||||
|
||||
#ifdef PNG_READ_SUPPORTED
|
||||
#if PNG_ARM_NEON_OPT > 0
|
||||
|
||||
void
|
||||
png_read_filter_row_up_neon(png_row_infop row_info, png_bytep row,
|
||||
png_const_bytep prev_row)
|
||||
{
|
||||
png_bytep rp = row;
|
||||
png_bytep rp_stop = row + row_info->rowbytes;
|
||||
png_const_bytep pp = prev_row;
|
||||
|
||||
for (; rp < rp_stop; rp += 16, pp += 16)
|
||||
{
|
||||
uint8x16_t qrp, qpp;
|
||||
|
||||
qrp = vld1q_u8(rp);
|
||||
qpp = vld1q_u8(pp);
|
||||
qrp = vaddq_u8(qrp, qpp);
|
||||
vst1q_u8(rp, qrp);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
png_read_filter_row_sub3_neon(png_row_infop row_info, png_bytep row,
|
||||
png_const_bytep prev_row)
|
||||
{
|
||||
png_bytep rp = row;
|
||||
png_bytep rp_stop = row + row_info->rowbytes;
|
||||
|
||||
uint8x16_t vtmp = vld1q_u8(rp);
|
||||
uint8x8x2_t *vrpt = png_ptr(uint8x8x2_t, &vtmp);
|
||||
uint8x8x2_t vrp = *vrpt;
|
||||
|
||||
uint8x8x4_t vdest;
|
||||
vdest.val[3] = vdup_n_u8(0);
|
||||
|
||||
for (; rp < rp_stop;)
|
||||
{
|
||||
uint8x8_t vtmp1, vtmp2;
|
||||
uint32x2_t *temp_pointer;
|
||||
|
||||
vtmp1 = vext_u8(vrp.val[0], vrp.val[1], 3);
|
||||
vdest.val[0] = vadd_u8(vdest.val[3], vrp.val[0]);
|
||||
vtmp2 = vext_u8(vrp.val[0], vrp.val[1], 6);
|
||||
vdest.val[1] = vadd_u8(vdest.val[0], vtmp1);
|
||||
|
||||
vtmp1 = vext_u8(vrp.val[1], vrp.val[1], 1);
|
||||
vdest.val[2] = vadd_u8(vdest.val[1], vtmp2);
|
||||
vdest.val[3] = vadd_u8(vdest.val[2], vtmp1);
|
||||
|
||||
vtmp = vld1q_u8(rp + 12);
|
||||
vrpt = png_ptr(uint8x8x2_t, &vtmp);
|
||||
vrp = *vrpt;
|
||||
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[0]), 0);
|
||||
rp += 3;
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[1]), 0);
|
||||
rp += 3;
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[2]), 0);
|
||||
rp += 3;
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[3]), 0);
|
||||
rp += 3;
|
||||
}
|
||||
|
||||
PNG_UNUSED(prev_row)
|
||||
}
|
||||
|
||||
void
|
||||
png_read_filter_row_sub4_neon(png_row_infop row_info, png_bytep row,
|
||||
png_const_bytep prev_row)
|
||||
{
|
||||
png_bytep rp = row;
|
||||
png_bytep rp_stop = row + row_info->rowbytes;
|
||||
|
||||
uint8x8x4_t vdest;
|
||||
vdest.val[3] = vdup_n_u8(0);
|
||||
|
||||
for (; rp < rp_stop; rp += 16)
|
||||
{
|
||||
uint32x2x4_t vtmp = vld4_u32(png_ptr(uint32_t,rp));
|
||||
uint8x8x4_t *vrpt = png_ptr(uint8x8x4_t,&vtmp);
|
||||
uint8x8x4_t vrp = *vrpt;
|
||||
uint32x2x4_t *temp_pointer;
|
||||
|
||||
vdest.val[0] = vadd_u8(vdest.val[3], vrp.val[0]);
|
||||
vdest.val[1] = vadd_u8(vdest.val[0], vrp.val[1]);
|
||||
vdest.val[2] = vadd_u8(vdest.val[1], vrp.val[2]);
|
||||
vdest.val[3] = vadd_u8(vdest.val[2], vrp.val[3]);
|
||||
vst4_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2x4_t,&vdest), 0);
|
||||
}
|
||||
|
||||
PNG_UNUSED(prev_row)
|
||||
}
|
||||
|
||||
void
|
||||
png_read_filter_row_avg3_neon(png_row_infop row_info, png_bytep row,
|
||||
png_const_bytep prev_row)
|
||||
{
|
||||
png_bytep rp = row;
|
||||
png_const_bytep pp = prev_row;
|
||||
png_bytep rp_stop = row + row_info->rowbytes;
|
||||
|
||||
uint8x16_t vtmp;
|
||||
uint8x8x2_t *vrpt;
|
||||
uint8x8x2_t vrp;
|
||||
uint8x8x4_t vdest;
|
||||
vdest.val[3] = vdup_n_u8(0);
|
||||
|
||||
vtmp = vld1q_u8(rp);
|
||||
vrpt = png_ptr(uint8x8x2_t,&vtmp);
|
||||
vrp = *vrpt;
|
||||
|
||||
for (; rp < rp_stop; pp += 12)
|
||||
{
|
||||
uint8x8_t vtmp1, vtmp2, vtmp3;
|
||||
|
||||
uint8x8x2_t *vppt;
|
||||
uint8x8x2_t vpp;
|
||||
|
||||
uint32x2_t *temp_pointer;
|
||||
|
||||
vtmp = vld1q_u8(pp);
|
||||
vppt = png_ptr(uint8x8x2_t,&vtmp);
|
||||
vpp = *vppt;
|
||||
|
||||
vtmp1 = vext_u8(vrp.val[0], vrp.val[1], 3);
|
||||
vdest.val[0] = vhadd_u8(vdest.val[3], vpp.val[0]);
|
||||
vdest.val[0] = vadd_u8(vdest.val[0], vrp.val[0]);
|
||||
|
||||
vtmp2 = vext_u8(vpp.val[0], vpp.val[1], 3);
|
||||
vtmp3 = vext_u8(vrp.val[0], vrp.val[1], 6);
|
||||
vdest.val[1] = vhadd_u8(vdest.val[0], vtmp2);
|
||||
vdest.val[1] = vadd_u8(vdest.val[1], vtmp1);
|
||||
|
||||
vtmp2 = vext_u8(vpp.val[0], vpp.val[1], 6);
|
||||
vtmp1 = vext_u8(vrp.val[1], vrp.val[1], 1);
|
||||
|
||||
vtmp = vld1q_u8(rp + 12);
|
||||
vrpt = png_ptr(uint8x8x2_t,&vtmp);
|
||||
vrp = *vrpt;
|
||||
|
||||
vdest.val[2] = vhadd_u8(vdest.val[1], vtmp2);
|
||||
vdest.val[2] = vadd_u8(vdest.val[2], vtmp3);
|
||||
|
||||
vtmp2 = vext_u8(vpp.val[1], vpp.val[1], 1);
|
||||
|
||||
vdest.val[3] = vhadd_u8(vdest.val[2], vtmp2);
|
||||
vdest.val[3] = vadd_u8(vdest.val[3], vtmp1);
|
||||
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[0]), 0);
|
||||
rp += 3;
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[1]), 0);
|
||||
rp += 3;
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[2]), 0);
|
||||
rp += 3;
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[3]), 0);
|
||||
rp += 3;
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
png_read_filter_row_avg4_neon(png_row_infop row_info, png_bytep row,
|
||||
png_const_bytep prev_row)
|
||||
{
|
||||
png_bytep rp = row;
|
||||
png_bytep rp_stop = row + row_info->rowbytes;
|
||||
png_const_bytep pp = prev_row;
|
||||
|
||||
uint8x8x4_t vdest;
|
||||
vdest.val[3] = vdup_n_u8(0);
|
||||
|
||||
for (; rp < rp_stop; rp += 16, pp += 16)
|
||||
{
|
||||
uint32x2x4_t vtmp;
|
||||
uint8x8x4_t *vrpt, *vppt;
|
||||
uint8x8x4_t vrp, vpp;
|
||||
uint32x2x4_t *temp_pointer;
|
||||
|
||||
vtmp = vld4_u32(png_ptr(uint32_t,rp));
|
||||
vrpt = png_ptr(uint8x8x4_t,&vtmp);
|
||||
vrp = *vrpt;
|
||||
vtmp = vld4_u32(png_ptrc(uint32_t,pp));
|
||||
vppt = png_ptr(uint8x8x4_t,&vtmp);
|
||||
vpp = *vppt;
|
||||
|
||||
vdest.val[0] = vhadd_u8(vdest.val[3], vpp.val[0]);
|
||||
vdest.val[0] = vadd_u8(vdest.val[0], vrp.val[0]);
|
||||
vdest.val[1] = vhadd_u8(vdest.val[0], vpp.val[1]);
|
||||
vdest.val[1] = vadd_u8(vdest.val[1], vrp.val[1]);
|
||||
vdest.val[2] = vhadd_u8(vdest.val[1], vpp.val[2]);
|
||||
vdest.val[2] = vadd_u8(vdest.val[2], vrp.val[2]);
|
||||
vdest.val[3] = vhadd_u8(vdest.val[2], vpp.val[3]);
|
||||
vdest.val[3] = vadd_u8(vdest.val[3], vrp.val[3]);
|
||||
|
||||
vst4_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2x4_t,&vdest), 0);
|
||||
}
|
||||
}
|
||||
|
||||
static uint8x8_t
|
||||
paeth(uint8x8_t a, uint8x8_t b, uint8x8_t c)
|
||||
{
|
||||
uint8x8_t d, e;
|
||||
uint16x8_t p1, pa, pb, pc;
|
||||
|
||||
p1 = vaddl_u8(a, b); /* a + b */
|
||||
pc = vaddl_u8(c, c); /* c * 2 */
|
||||
pa = vabdl_u8(b, c); /* pa */
|
||||
pb = vabdl_u8(a, c); /* pb */
|
||||
pc = vabdq_u16(p1, pc); /* pc */
|
||||
|
||||
p1 = vcleq_u16(pa, pb); /* pa <= pb */
|
||||
pa = vcleq_u16(pa, pc); /* pa <= pc */
|
||||
pb = vcleq_u16(pb, pc); /* pb <= pc */
|
||||
|
||||
p1 = vandq_u16(p1, pa); /* pa <= pb && pa <= pc */
|
||||
|
||||
d = vmovn_u16(pb);
|
||||
e = vmovn_u16(p1);
|
||||
|
||||
d = vbsl_u8(d, b, c);
|
||||
e = vbsl_u8(e, a, d);
|
||||
|
||||
return e;
|
||||
}
|
||||
|
||||
void
|
||||
png_read_filter_row_paeth3_neon(png_row_infop row_info, png_bytep row,
|
||||
png_const_bytep prev_row)
|
||||
{
|
||||
png_bytep rp = row;
|
||||
png_const_bytep pp = prev_row;
|
||||
png_bytep rp_stop = row + row_info->rowbytes;
|
||||
|
||||
uint8x16_t vtmp;
|
||||
uint8x8x2_t *vrpt;
|
||||
uint8x8x2_t vrp;
|
||||
uint8x8_t vlast = vdup_n_u8(0);
|
||||
uint8x8x4_t vdest;
|
||||
vdest.val[3] = vdup_n_u8(0);
|
||||
|
||||
vtmp = vld1q_u8(rp);
|
||||
vrpt = png_ptr(uint8x8x2_t,&vtmp);
|
||||
vrp = *vrpt;
|
||||
|
||||
for (; rp < rp_stop; pp += 12)
|
||||
{
|
||||
uint8x8x2_t *vppt;
|
||||
uint8x8x2_t vpp;
|
||||
uint8x8_t vtmp1, vtmp2, vtmp3;
|
||||
uint32x2_t *temp_pointer;
|
||||
|
||||
vtmp = vld1q_u8(pp);
|
||||
vppt = png_ptr(uint8x8x2_t,&vtmp);
|
||||
vpp = *vppt;
|
||||
|
||||
vdest.val[0] = paeth(vdest.val[3], vpp.val[0], vlast);
|
||||
vdest.val[0] = vadd_u8(vdest.val[0], vrp.val[0]);
|
||||
|
||||
vtmp1 = vext_u8(vrp.val[0], vrp.val[1], 3);
|
||||
vtmp2 = vext_u8(vpp.val[0], vpp.val[1], 3);
|
||||
vdest.val[1] = paeth(vdest.val[0], vtmp2, vpp.val[0]);
|
||||
vdest.val[1] = vadd_u8(vdest.val[1], vtmp1);
|
||||
|
||||
vtmp1 = vext_u8(vrp.val[0], vrp.val[1], 6);
|
||||
vtmp3 = vext_u8(vpp.val[0], vpp.val[1], 6);
|
||||
vdest.val[2] = paeth(vdest.val[1], vtmp3, vtmp2);
|
||||
vdest.val[2] = vadd_u8(vdest.val[2], vtmp1);
|
||||
|
||||
vtmp1 = vext_u8(vrp.val[1], vrp.val[1], 1);
|
||||
vtmp2 = vext_u8(vpp.val[1], vpp.val[1], 1);
|
||||
|
||||
vtmp = vld1q_u8(rp + 12);
|
||||
vrpt = png_ptr(uint8x8x2_t,&vtmp);
|
||||
vrp = *vrpt;
|
||||
|
||||
vdest.val[3] = paeth(vdest.val[2], vtmp2, vtmp3);
|
||||
vdest.val[3] = vadd_u8(vdest.val[3], vtmp1);
|
||||
|
||||
vlast = vtmp2;
|
||||
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[0]), 0);
|
||||
rp += 3;
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[1]), 0);
|
||||
rp += 3;
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[2]), 0);
|
||||
rp += 3;
|
||||
vst1_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2_t,&vdest.val[3]), 0);
|
||||
rp += 3;
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
png_read_filter_row_paeth4_neon(png_row_infop row_info, png_bytep row,
|
||||
png_const_bytep prev_row)
|
||||
{
|
||||
png_bytep rp = row;
|
||||
png_bytep rp_stop = row + row_info->rowbytes;
|
||||
png_const_bytep pp = prev_row;
|
||||
|
||||
uint8x8_t vlast = vdup_n_u8(0);
|
||||
uint8x8x4_t vdest;
|
||||
vdest.val[3] = vdup_n_u8(0);
|
||||
|
||||
for (; rp < rp_stop; rp += 16, pp += 16)
|
||||
{
|
||||
uint32x2x4_t vtmp;
|
||||
uint8x8x4_t *vrpt, *vppt;
|
||||
uint8x8x4_t vrp, vpp;
|
||||
uint32x2x4_t *temp_pointer;
|
||||
|
||||
vtmp = vld4_u32(png_ptr(uint32_t,rp));
|
||||
vrpt = png_ptr(uint8x8x4_t,&vtmp);
|
||||
vrp = *vrpt;
|
||||
vtmp = vld4_u32(png_ptrc(uint32_t,pp));
|
||||
vppt = png_ptr(uint8x8x4_t,&vtmp);
|
||||
vpp = *vppt;
|
||||
|
||||
vdest.val[0] = paeth(vdest.val[3], vpp.val[0], vlast);
|
||||
vdest.val[0] = vadd_u8(vdest.val[0], vrp.val[0]);
|
||||
vdest.val[1] = paeth(vdest.val[0], vpp.val[1], vpp.val[0]);
|
||||
vdest.val[1] = vadd_u8(vdest.val[1], vrp.val[1]);
|
||||
vdest.val[2] = paeth(vdest.val[1], vpp.val[2], vpp.val[1]);
|
||||
vdest.val[2] = vadd_u8(vdest.val[2], vrp.val[2]);
|
||||
vdest.val[3] = paeth(vdest.val[2], vpp.val[3], vpp.val[2]);
|
||||
vdest.val[3] = vadd_u8(vdest.val[3], vrp.val[3]);
|
||||
|
||||
vlast = vpp.val[3];
|
||||
|
||||
vst4_lane_u32(png_ptr(uint32_t,rp), png_ldr(uint32x2x4_t,&vdest), 0);
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* PNG_ARM_NEON_OPT > 0 */
|
||||
#endif /* PNG_READ_SUPPORTED */
|
||||
#endif /* PNG_ARM_NEON_IMPLEMENTATION == 1 (intrinsics) */
|
||||
Loading…
x
Reference in New Issue
Block a user