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[libpng16] Added pngdebug() statements to the new intel code and the arm code.

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This commit is contained in:
Glenn Randers-Pehrson
2016-02-19 14:58:59 -06:00
parent 52846504da
commit da9d1d7aa6
5 changed files with 32 additions and 6 deletions
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4
contrib/intel/INSTALL
View File

@@ -2,3 +2,7 @@
To enable SSE support in libpng, manually edit configure.ac and Makefile.am,
following the instructions in the configure.ac.patch and Makefile.am.patch
files, then configure with -DPNG_INTEL_SSE in CPPFLAGS.
If you have moved the *.c files to a different directory, be sure to update
the '#include "../../pngpriv.h"' line in both files if necessary to point
to the correct relative location of pngpriv.h.

8
contrib/intel/filter_sse2_intrinsics.c
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@@ -4,7 +4,7 @@
* Copyright (c) 2016 Google, Inc.
* Written by Mike Klein and Matt Sarett
* Derived from arm/filter_neon_intrinsics.c, which was
* Copyright (c) 2014 Glenn Randers-Pehrson
* Copyright (c) 2014,2016 Glenn Randers-Pehrson
*
* Last changed in libpng 1.6.22 [(PENDING RELEASE)]
*
@@ -55,6 +55,7 @@ void png_read_filter_row_sub3_sse2(png_row_infop row_info, png_bytep row,
* 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.
*/
png_debug(1, "in png_read_filter_row_sub3_sse2");
__m128i a, d = _mm_setzero_si128();
int rb = row_info->rowbytes;
@@ -75,6 +76,7 @@ void png_read_filter_row_sub4_sse2(png_row_infop row_info, png_bytep row,
* 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.
*/
png_debug(1, "in png_read_filter_row_sub4_sse2");
__m128i a, d = _mm_setzero_si128();
int rb = row_info->rowbytes;
@@ -96,6 +98,7 @@ void png_read_filter_row_avg3_sse2(png_row_infop row_info, png_bytep row,
* predicted to be half of the pixel above it. So again, this works
* perfectly with our loop if we make sure a starts at zero.
*/
png_debug(1, "in png_read_filter_row_avg3_sse2");
const __m128i zero = _mm_setzero_si128();
__m128i b;
__m128i a, d = zero;
@@ -128,6 +131,7 @@ void png_read_filter_row_avg4_sse2(png_row_infop row_info, png_bytep row,
* predicted to be half of the pixel above it. So again, this works
* perfectly with our loop if we make sure a starts at zero.
*/
png_debug(1, "in png_read_filter_row_avg4_sse2");
const __m128i zero = _mm_setzero_si128();
__m128i b;
__m128i a, d = zero;
@@ -196,6 +200,7 @@ void png_read_filter_row_paeth3_sse2(png_row_infop row_info, png_bytep row,
* Here we zero b and d, which become c and a respectively at the start of
* the loop.
*/
png_debug(1, "in png_read_filter_row_paeth3_sse2");
const __m128i zero = _mm_setzero_si128();
__m128i c, b = zero,
a, d = zero;
@@ -254,6 +259,7 @@ void png_read_filter_row_paeth4_sse2(png_row_infop row_info, png_bytep row,
* Here we zero b and d, which become c and a respectively at the start of
* the loop.
*/
png_debug(1, "in png_read_filter_row_paeth4_sse2");
const __m128i zero = _mm_setzero_si128();
__m128i c, b = zero,
a, d = zero;

3
contrib/intel/intel_init.c
View File

@@ -4,7 +4,7 @@
* Copyright (c) 2016 Google, Inc.
* Written by Mike Klein and Matt Sarett
* Derived from arm/arm_init.c, which was
* Copyright (c) 2014 Glenn Randers-Pehrson
* Copyright (c) 2014,2016 Glenn Randers-Pehrson
*
* Last changed in libpng 1.6.22 [(PENDING RELEASE)]
*
@@ -29,6 +29,7 @@ png_init_filter_functions_sse2(png_structp pp, unsigned int bpp)
* Most of these can be implemented using only MMX and 64-bit registers,
* but they end up a bit slower than using the equally-ubiquitous SSE2.
*/
png_debug(1, "in png_init_filter_functions_sse2");
if (bpp == 3)
{
pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_sse2;