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| author | Lei Zhang <thestig@chromium.org> | 2018-09-04 22:42:56 +0000 |
|---|---|---|
| committer | Chromium commit bot <commit-bot@chromium.org> | 2018-09-04 22:42:56 +0000 |
| commit | 424621e3129f7029283f72e953fe0c69f982d257 (patch) | |
| tree | 47d64c877a652cffd8d6da60982f2f706a07ee22 /third_party/libpng16/intel/intel_init.c | |
| parent | d51c66c57a4fa6033f025d6ddd5d17a7d4e1d001 (diff) | |
| download | pdfium-424621e3129f7029283f72e953fe0c69f982d257.tar.xz | |
Revert "Update libpng from 1.6.22 -> 1.6.34"chromium/3543
This reverts commit 6b2e2f0ec7c5f629c5270d14c2339197af7392d8.
Reason for revert: Broke Chromium integration.
Original change's description:
> Update libpng from 1.6.22 -> 1.6.34
>
> Updates third_party/libpng16 to Chromium's third_party/libpng @
> e87a02987101e2dbe319a4aba6b52470f7624b4a and applies PDFium specific
> patches.
>
> BUG=chromium:880322
>
> Change-Id: I6724f55099c70a79da6d6e4863b9c6c9157ec571
> Reviewed-on: https://pdfium-review.googlesource.com/41910
> Reviewed-by: Lei Zhang <thestig@chromium.org>
> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
TBR=thestig@chromium.org,rharrison@chromium.org
Change-Id: I2fd1f78e5d07ca983b2430bf078544185292ee1d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:880322
Reviewed-on: https://pdfium-review.googlesource.com/41970
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Diffstat (limited to 'third_party/libpng16/intel/intel_init.c')
| -rw-r--r-- | third_party/libpng16/intel/intel_init.c | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/third_party/libpng16/intel/intel_init.c b/third_party/libpng16/intel/intel_init.c deleted file mode 100644 index 8f08baf8c5..0000000000 --- a/third_party/libpng16/intel/intel_init.c +++ /dev/null @@ -1,53 +0,0 @@ - -/* intel_init.c - SSE2 optimized filter functions - * - * Copyright (c) 2016-2017 Glenn Randers-Pehrson - * Written by Mike Klein and Matt Sarett, Google, Inc. - * Derived from arm/arm_init.c - * - * Last changed in libpng 1.6.29 [March 16, 2017] - * - * 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 */ |