diff options
| author | Haibo Huang <hhb@google.com> | 2019-06-10 11:41:54 -0700 |
|---|---|---|
| committer | Haibo Huang <hhb@google.com> | 2019-06-10 14:38:44 -0700 |
| commit | 4f55151a4b8cbda0ea61646f437fdf57c54190d9 (patch) | |
| tree | 478f3db238be7e08885ac80ac8ef1be9935441bb /contrib/intel/intel_init.c | |
| parent | 9ef33ccf9b2e957c1f5e228dbab15fbda1744300 (diff) | |
| parent | a40189cf881e9f0db80511c382292a5604c3c3d1 (diff) | |
Merge tag 'v1.6.37' into HEAD
Test: build
Bug: 134761359
Change-Id: Iee93c2907d93430a8de681f2e987d37f4b3b17bc
Diffstat (limited to 'contrib/intel/intel_init.c')
| -rw-r--r-- | contrib/intel/intel_init.c | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/contrib/intel/intel_init.c b/contrib/intel/intel_init.c deleted file mode 100644 index 328e90e9a..000000000 --- a/contrib/intel/intel_init.c +++ /dev/null @@ -1,54 +0,0 @@ - -/* intel_init.c - SSE2 optimized filter functions - * - * Copyright (c) 2016 Google, Inc. - * Written by Mike Klein and Matt Sarett - * Derived from arm/arm_init.c, which was - * Copyright (c) 2014,2016 Glenn Randers-Pehrson - * - * Last changed in libpng 1.6.22 [May 26, 2016] - * - * 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_INTEL_SSE_IMPLEMENTATION > 0 - -void -png_init_filter_functions_sse2(png_structp pp, unsigned int bpp) -{ - /* The techniques used to implement each of these filters in SSE operate on - * one pixel at a time. - * So they generally speed up 3bpp images about 3x, 4bpp images about 4x. - * They can scale up to 6 and 8 bpp images and down to 2 bpp images, - * but they'd not likely have any benefit for 1bpp images. - * 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; - pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_sse2; - pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = - png_read_filter_row_paeth3_sse2; - } - else if (bpp == 4) - { - pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_sse2; - pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_sse2; - pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = - png_read_filter_row_paeth4_sse2; - } - - /* No need optimize PNG_FILTER_VALUE_UP. The compiler should - * autovectorize. - */ -} - -#endif /* PNG_INTEL_SSE_IMPLEMENTATION > 0 */ -#endif /* PNG_READ_SUPPORTED */ |