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c5fd234270
--HG-- rename : media/webrtc/trunk/third_party/libyuv/AUTHORS => media/libyuv/AUTHORS rename : media/webrtc/trunk/third_party/libyuv/Android.mk => media/libyuv/Android.mk rename : media/webrtc/trunk/third_party/libyuv/DEPS => media/libyuv/DEPS rename : media/webrtc/trunk/third_party/libyuv/LICENSE => media/libyuv/LICENSE rename : media/webrtc/trunk/third_party/libyuv/LICENSE_THIRD_PARTY => media/libyuv/LICENSE_THIRD_PARTY rename : media/webrtc/trunk/third_party/libyuv/OWNERS => media/libyuv/OWNERS rename : media/webrtc/trunk/third_party/libyuv/PATENTS => media/libyuv/PATENTS rename : media/webrtc/trunk/third_party/libyuv/README.chromium => media/libyuv/README.chromium rename : media/webrtc/trunk/third_party/libyuv/all.gyp => media/libyuv/all.gyp rename : media/webrtc/trunk/third_party/libyuv/codereview.settings => media/libyuv/codereview.settings rename : media/webrtc/trunk/third_party/libyuv/include/libyuv.h => media/libyuv/include/libyuv.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/basic_types.h => media/libyuv/include/libyuv/basic_types.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/compare.h => media/libyuv/include/libyuv/compare.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/convert.h => media/libyuv/include/libyuv/convert.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/convert_argb.h => media/libyuv/include/libyuv/convert_argb.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/convert_from.h => media/libyuv/include/libyuv/convert_from.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/convert_from_argb.h => media/libyuv/include/libyuv/convert_from_argb.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/cpu_id.h => media/libyuv/include/libyuv/cpu_id.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/format_conversion.h => media/libyuv/include/libyuv/format_conversion.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/mjpeg_decoder.h => media/libyuv/include/libyuv/mjpeg_decoder.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/planar_functions.h => media/libyuv/include/libyuv/planar_functions.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/rotate.h => media/libyuv/include/libyuv/rotate.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/rotate_argb.h => media/libyuv/include/libyuv/rotate_argb.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/row.h => media/libyuv/include/libyuv/row.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/scale.h => media/libyuv/include/libyuv/scale.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/scale_argb.h => media/libyuv/include/libyuv/scale_argb.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/scale_row.h => media/libyuv/include/libyuv/scale_row.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/version.h => media/libyuv/include/libyuv/version.h rename : media/webrtc/trunk/third_party/libyuv/include/libyuv/video_common.h => media/libyuv/include/libyuv/video_common.h rename : media/webrtc/trunk/third_party/libyuv/libyuv.gyp => media/libyuv/libyuv.gyp rename : media/webrtc/trunk/third_party/libyuv/libyuv.gypi => media/libyuv/libyuv.gypi rename : media/webrtc/trunk/third_party/libyuv/libyuv_nacl.gyp => media/libyuv/libyuv_nacl.gyp rename : media/webrtc/trunk/third_party/libyuv/libyuv_test.gyp => media/libyuv/libyuv_test.gyp rename : media/webrtc/trunk/third_party/libyuv/linux.mk => media/libyuv/linux.mk rename : media/webrtc/trunk/third_party/libyuv/public.mk => media/libyuv/public.mk rename : media/webrtc/trunk/third_party/libyuv/source/compare.cc => media/libyuv/source/compare.cc rename : media/webrtc/trunk/third_party/libyuv/source/compare_common.cc => media/libyuv/source/compare_common.cc rename : media/webrtc/trunk/third_party/libyuv/source/compare_neon.cc => media/libyuv/source/compare_neon.cc rename : media/webrtc/trunk/third_party/libyuv/source/compare_posix.cc => media/libyuv/source/compare_posix.cc rename : media/webrtc/trunk/third_party/libyuv/source/compare_win.cc => media/libyuv/source/compare_win.cc rename : media/webrtc/trunk/third_party/libyuv/source/convert.cc => media/libyuv/source/convert.cc rename : media/webrtc/trunk/third_party/libyuv/source/convert_argb.cc => media/libyuv/source/convert_argb.cc rename : media/webrtc/trunk/third_party/libyuv/source/convert_from.cc => media/libyuv/source/convert_from.cc rename : media/webrtc/trunk/third_party/libyuv/source/convert_from_argb.cc => media/libyuv/source/convert_from_argb.cc rename : media/webrtc/trunk/third_party/libyuv/source/convert_jpeg.cc => media/libyuv/source/convert_jpeg.cc rename : media/webrtc/trunk/third_party/libyuv/source/convert_to_argb.cc => media/libyuv/source/convert_to_argb.cc rename : media/webrtc/trunk/third_party/libyuv/source/convert_to_i420.cc => media/libyuv/source/convert_to_i420.cc rename : media/webrtc/trunk/third_party/libyuv/source/cpu_id.cc => media/libyuv/source/cpu_id.cc rename : media/webrtc/trunk/third_party/libyuv/source/format_conversion.cc => media/libyuv/source/format_conversion.cc rename : media/webrtc/trunk/third_party/libyuv/source/mjpeg_decoder.cc => media/libyuv/source/mjpeg_decoder.cc rename : media/webrtc/trunk/third_party/libyuv/source/mjpeg_validate.cc => media/libyuv/source/mjpeg_validate.cc rename : media/webrtc/trunk/third_party/libyuv/source/planar_functions.cc => media/libyuv/source/planar_functions.cc rename : media/webrtc/trunk/third_party/libyuv/source/rotate.cc => media/libyuv/source/rotate.cc rename : media/webrtc/trunk/third_party/libyuv/source/rotate_argb.cc => media/libyuv/source/rotate_argb.cc rename : media/webrtc/trunk/third_party/libyuv/source/rotate_mips.cc => media/libyuv/source/rotate_mips.cc rename : media/webrtc/trunk/third_party/libyuv/source/rotate_neon.cc => media/libyuv/source/rotate_neon.cc rename : media/webrtc/trunk/third_party/libyuv/source/row_any.cc => media/libyuv/source/row_any.cc rename : media/webrtc/trunk/third_party/libyuv/source/row_common.cc => media/libyuv/source/row_common.cc rename : media/webrtc/trunk/third_party/libyuv/source/row_mips.cc => media/libyuv/source/row_mips.cc rename : media/webrtc/trunk/third_party/libyuv/source/row_neon.cc => media/libyuv/source/row_neon.cc rename : media/webrtc/trunk/third_party/libyuv/source/row_posix.cc => media/libyuv/source/row_posix.cc rename : media/webrtc/trunk/third_party/libyuv/source/row_win.cc => media/libyuv/source/row_win.cc rename : media/webrtc/trunk/third_party/libyuv/source/row_x86.asm => media/libyuv/source/row_x86.asm rename : media/webrtc/trunk/third_party/libyuv/source/scale.cc => media/libyuv/source/scale.cc rename : media/webrtc/trunk/third_party/libyuv/source/scale_argb.cc => media/libyuv/source/scale_argb.cc rename : media/webrtc/trunk/third_party/libyuv/source/scale_common.cc => media/libyuv/source/scale_common.cc rename : media/webrtc/trunk/third_party/libyuv/source/scale_mips.cc => media/libyuv/source/scale_mips.cc rename : media/webrtc/trunk/third_party/libyuv/source/scale_neon.cc => media/libyuv/source/scale_neon.cc rename : media/webrtc/trunk/third_party/libyuv/source/scale_posix.cc => media/libyuv/source/scale_posix.cc rename : media/webrtc/trunk/third_party/libyuv/source/scale_win.cc => media/libyuv/source/scale_win.cc rename : media/webrtc/trunk/third_party/libyuv/source/video_common.cc => media/libyuv/source/video_common.cc rename : media/webrtc/trunk/third_party/libyuv/source/x86inc.asm => media/libyuv/source/x86inc.asm rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/libyuv_tests.bat => media/libyuv/tools/valgrind-libyuv/libyuv_tests.bat rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/libyuv_tests.py => media/libyuv/tools/valgrind-libyuv/libyuv_tests.py rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/libyuv_tests.sh => media/libyuv/tools/valgrind-libyuv/libyuv_tests.sh rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/memcheck/OWNERS => media/libyuv/tools/valgrind-libyuv/memcheck/OWNERS rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/memcheck/PRESUBMIT.py => media/libyuv/tools/valgrind-libyuv/memcheck/PRESUBMIT.py rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/memcheck/suppressions.txt => media/libyuv/tools/valgrind-libyuv/memcheck/suppressions.txt rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/memcheck/suppressions_mac.txt => media/libyuv/tools/valgrind-libyuv/memcheck/suppressions_mac.txt rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/memcheck/suppressions_win32.txt => media/libyuv/tools/valgrind-libyuv/memcheck/suppressions_win32.txt rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/tsan/OWNERS => media/libyuv/tools/valgrind-libyuv/tsan/OWNERS rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/tsan/PRESUBMIT.py => media/libyuv/tools/valgrind-libyuv/tsan/PRESUBMIT.py rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/tsan/suppressions.txt => media/libyuv/tools/valgrind-libyuv/tsan/suppressions.txt rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/tsan/suppressions_mac.txt => media/libyuv/tools/valgrind-libyuv/tsan/suppressions_mac.txt rename : media/webrtc/trunk/third_party/libyuv/tools/valgrind-libyuv/tsan/suppressions_win32.txt => media/libyuv/tools/valgrind-libyuv/tsan/suppressions_win32.txt rename : media/webrtc/trunk/third_party/libyuv/unit_test/basictypes_test.cc => media/libyuv/unit_test/basictypes_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/compare_test.cc => media/libyuv/unit_test/compare_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/convert_test.cc => media/libyuv/unit_test/convert_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/cpu_test.cc => media/libyuv/unit_test/cpu_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/math_test.cc => media/libyuv/unit_test/math_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/planar_test.cc => media/libyuv/unit_test/planar_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/rotate_argb_test.cc => media/libyuv/unit_test/rotate_argb_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/rotate_test.cc => media/libyuv/unit_test/rotate_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/scale_argb_test.cc => media/libyuv/unit_test/scale_argb_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/scale_test.cc => media/libyuv/unit_test/scale_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/testdata/arm_v7.txt => media/libyuv/unit_test/testdata/arm_v7.txt rename : media/webrtc/trunk/third_party/libyuv/unit_test/testdata/tegra3.txt => media/libyuv/unit_test/testdata/tegra3.txt rename : media/webrtc/trunk/third_party/libyuv/unit_test/unit_test.cc => media/libyuv/unit_test/unit_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/unit_test.h => media/libyuv/unit_test/unit_test.h rename : media/webrtc/trunk/third_party/libyuv/unit_test/version_test.cc => media/libyuv/unit_test/version_test.cc rename : media/webrtc/trunk/third_party/libyuv/unit_test/video_common_test.cc => media/libyuv/unit_test/video_common_test.cc rename : media/webrtc/trunk/third_party/libyuv/util/Makefile => media/libyuv/util/Makefile rename : media/webrtc/trunk/third_party/libyuv/util/compare.cc => media/libyuv/util/compare.cc rename : media/webrtc/trunk/third_party/libyuv/util/convert.cc => media/libyuv/util/convert.cc rename : media/webrtc/trunk/third_party/libyuv/util/cpuid.c => media/libyuv/util/cpuid.c rename : media/webrtc/trunk/third_party/libyuv/util/psnr.cc => media/libyuv/util/psnr.cc rename : media/webrtc/trunk/third_party/libyuv/util/psnr.h => media/libyuv/util/psnr.h rename : media/webrtc/trunk/third_party/libyuv/util/psnr_main.cc => media/libyuv/util/psnr_main.cc rename : media/webrtc/trunk/third_party/libyuv/util/ssim.cc => media/libyuv/util/ssim.cc rename : media/webrtc/trunk/third_party/libyuv/util/ssim.h => media/libyuv/util/ssim.h rename : media/webrtc/trunk/third_party/libyuv/winarm.mk => media/libyuv/winarm.mk
280 lines
8.0 KiB
C++
280 lines
8.0 KiB
C++
/*
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* Copyright 2011 The LibYuv Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "libyuv/cpu_id.h"
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#ifdef _MSC_VER
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#include <intrin.h> // For __cpuidex()
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#endif
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#if !defined(__pnacl__) && !defined(__CLR_VER) && \
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!defined(__native_client__) && defined(_M_X64) && \
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defined(_MSC_VER) && (_MSC_FULL_VER >= 160040219)
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#include <immintrin.h> // For _xgetbv()
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#endif
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#if !defined(__native_client__)
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#include <stdlib.h> // For getenv()
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#endif
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// For ArmCpuCaps() but unittested on all platforms
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#include <stdio.h>
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#include <string.h>
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#include "libyuv/basic_types.h" // For CPU_X86
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#ifdef __cplusplus
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namespace libyuv {
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extern "C" {
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#endif
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// For functions that use the stack and have runtime checks for overflow,
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// use SAFEBUFFERS to avoid additional check.
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#if defined(_MSC_VER) && (_MSC_FULL_VER >= 160040219)
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#define SAFEBUFFERS __declspec(safebuffers)
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#else
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#define SAFEBUFFERS
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#endif
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// Low level cpuid for X86. Returns zeros on other CPUs.
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#if !defined(__pnacl__) && !defined(__CLR_VER) && \
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(defined(_M_IX86) || defined(_M_X64) || \
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defined(__i386__) || defined(__x86_64__))
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LIBYUV_API
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void CpuId(uint32 info_eax, uint32 info_ecx, uint32* cpu_info) {
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#if defined(_MSC_VER)
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#if (_MSC_FULL_VER >= 160040219)
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__cpuidex((int*)(cpu_info), info_eax, info_ecx);
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#elif defined(_M_IX86)
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__asm {
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mov eax, info_eax
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mov ecx, info_ecx
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mov edi, cpu_info
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cpuid
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mov [edi], eax
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mov [edi + 4], ebx
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mov [edi + 8], ecx
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mov [edi + 12], edx
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}
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#else
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if (info_ecx == 0) {
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__cpuid((int*)(cpu_info), info_eax);
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} else {
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cpu_info[3] = cpu_info[2] = cpu_info[1] = cpu_info[0] = 0;
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}
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#endif
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#else // defined(_MSC_VER)
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uint32 info_ebx, info_edx;
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asm volatile ( // NOLINT
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#if defined( __i386__) && defined(__PIC__)
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// Preserve ebx for fpic 32 bit.
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"mov %%ebx, %%edi \n"
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"cpuid \n"
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"xchg %%edi, %%ebx \n"
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: "=D" (info_ebx),
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#else
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"cpuid \n"
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: "=b" (info_ebx),
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#endif // defined( __i386__) && defined(__PIC__)
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"+a" (info_eax), "+c" (info_ecx), "=d" (info_edx));
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cpu_info[0] = info_eax;
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cpu_info[1] = info_ebx;
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cpu_info[2] = info_ecx;
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cpu_info[3] = info_edx;
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#endif // defined(_MSC_VER)
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}
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#if !defined(__native_client__)
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#define HAS_XGETBV
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// X86 CPUs have xgetbv to detect OS saves high parts of ymm registers.
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int TestOsSaveYmm() {
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uint32 xcr0 = 0u;
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#if defined(_MSC_VER) && (_MSC_FULL_VER >= 160040219)
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xcr0 = (uint32)(_xgetbv(0)); // VS2010 SP1 required.
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#elif defined(_M_IX86)
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__asm {
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xor ecx, ecx // xcr 0
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_asm _emit 0x0f _asm _emit 0x01 _asm _emit 0xd0 // For VS2010 and earlier.
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mov xcr0, eax
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}
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#elif defined(__i386__) || defined(__x86_64__)
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asm(".byte 0x0f, 0x01, 0xd0" : "=a" (xcr0) : "c" (0) : "%edx");
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#endif // defined(_MSC_VER)
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return((xcr0 & 6) == 6); // Is ymm saved?
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}
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#endif // !defined(__native_client__)
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#else
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LIBYUV_API
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void CpuId(uint32 eax, uint32 ecx, uint32* cpu_info) {
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cpu_info[0] = cpu_info[1] = cpu_info[2] = cpu_info[3] = 0;
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}
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#endif
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// based on libvpx arm_cpudetect.c
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// For Arm, but public to allow testing on any CPU
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LIBYUV_API SAFEBUFFERS
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int ArmCpuCaps(const char* cpuinfo_name) {
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FILE* f = fopen(cpuinfo_name, "r");
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if (f) {
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char cpuinfo_line[512];
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while (fgets(cpuinfo_line, sizeof(cpuinfo_line) - 1, f)) {
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if (memcmp(cpuinfo_line, "Features", 8) == 0) {
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char* p = strstr(cpuinfo_line, " neon");
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if (p && (p[5] == ' ' || p[5] == '\n')) {
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fclose(f);
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return kCpuHasNEON;
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}
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}
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}
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fclose(f);
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}
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return 0;
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}
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#if defined(__mips__) && defined(__linux__)
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static int MipsCpuCaps(const char* search_string) {
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const char* file_name = "/proc/cpuinfo";
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char cpuinfo_line[256];
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FILE* f = NULL;
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if ((f = fopen(file_name, "r")) != NULL) {
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while (fgets(cpuinfo_line, sizeof(cpuinfo_line) - 1, f) != NULL) {
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if (strstr(cpuinfo_line, search_string) != NULL) {
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fclose(f);
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return kCpuHasMIPS_DSP;
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}
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}
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fclose(f);
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}
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/* Did not find string in the proc file, or not Linux ELF. */
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return 0;
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}
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#endif
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// CPU detect function for SIMD instruction sets.
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LIBYUV_API
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int cpu_info_ = kCpuInit; // cpu_info is not initialized yet.
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// Test environment variable for disabling CPU features. Any non-zero value
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// to disable. Zero ignored to make it easy to set the variable on/off.
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#if !defined(__native_client__) && !defined(_M_ARM)
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static LIBYUV_BOOL TestEnv(const char* name) {
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const char* var = getenv(name);
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if (var) {
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if (var[0] != '0') {
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return LIBYUV_TRUE;
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}
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}
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return LIBYUV_FALSE;
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}
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#else // nacl does not support getenv().
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static LIBYUV_BOOL TestEnv(const char*) {
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return LIBYUV_FALSE;
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}
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#endif
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LIBYUV_API SAFEBUFFERS
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int InitCpuFlags(void) {
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#if !defined(__pnacl__) && !defined(__CLR_VER) && defined(CPU_X86)
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uint32 cpu_info1[4] = { 0, 0, 0, 0 };
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uint32 cpu_info7[4] = { 0, 0, 0, 0 };
|
|
CpuId(1, 0, cpu_info1);
|
|
CpuId(7, 0, cpu_info7);
|
|
cpu_info_ = ((cpu_info1[3] & 0x04000000) ? kCpuHasSSE2 : 0) |
|
|
((cpu_info1[2] & 0x00000200) ? kCpuHasSSSE3 : 0) |
|
|
((cpu_info1[2] & 0x00080000) ? kCpuHasSSE41 : 0) |
|
|
((cpu_info1[2] & 0x00100000) ? kCpuHasSSE42 : 0) |
|
|
((cpu_info7[1] & 0x00000200) ? kCpuHasERMS : 0) |
|
|
((cpu_info1[2] & 0x00001000) ? kCpuHasFMA3 : 0) |
|
|
kCpuHasX86;
|
|
#ifdef HAS_XGETBV
|
|
if ((cpu_info1[2] & 0x18000000) == 0x18000000 && // AVX and OSSave
|
|
TestOsSaveYmm()) { // Saves YMM.
|
|
cpu_info_ |= ((cpu_info7[1] & 0x00000020) ? kCpuHasAVX2 : 0) |
|
|
kCpuHasAVX;
|
|
}
|
|
#endif
|
|
// Environment variable overrides for testing.
|
|
if (TestEnv("LIBYUV_DISABLE_X86")) {
|
|
cpu_info_ &= ~kCpuHasX86;
|
|
}
|
|
if (TestEnv("LIBYUV_DISABLE_SSE2")) {
|
|
cpu_info_ &= ~kCpuHasSSE2;
|
|
}
|
|
if (TestEnv("LIBYUV_DISABLE_SSSE3")) {
|
|
cpu_info_ &= ~kCpuHasSSSE3;
|
|
}
|
|
if (TestEnv("LIBYUV_DISABLE_SSE41")) {
|
|
cpu_info_ &= ~kCpuHasSSE41;
|
|
}
|
|
if (TestEnv("LIBYUV_DISABLE_SSE42")) {
|
|
cpu_info_ &= ~kCpuHasSSE42;
|
|
}
|
|
if (TestEnv("LIBYUV_DISABLE_AVX")) {
|
|
cpu_info_ &= ~kCpuHasAVX;
|
|
}
|
|
if (TestEnv("LIBYUV_DISABLE_AVX2")) {
|
|
cpu_info_ &= ~kCpuHasAVX2;
|
|
}
|
|
if (TestEnv("LIBYUV_DISABLE_ERMS")) {
|
|
cpu_info_ &= ~kCpuHasERMS;
|
|
}
|
|
if (TestEnv("LIBYUV_DISABLE_FMA3")) {
|
|
cpu_info_ &= ~kCpuHasFMA3;
|
|
}
|
|
#elif defined(__mips__) && defined(__linux__)
|
|
// Linux mips parse text file for dsp detect.
|
|
cpu_info_ = MipsCpuCaps("dsp"); // set kCpuHasMIPS_DSP.
|
|
#if defined(__mips_dspr2)
|
|
cpu_info_ |= kCpuHasMIPS_DSPR2;
|
|
#endif
|
|
cpu_info_ |= kCpuHasMIPS;
|
|
|
|
if (getenv("LIBYUV_DISABLE_MIPS")) {
|
|
cpu_info_ &= ~kCpuHasMIPS;
|
|
}
|
|
if (getenv("LIBYUV_DISABLE_MIPS_DSP")) {
|
|
cpu_info_ &= ~kCpuHasMIPS_DSP;
|
|
}
|
|
if (getenv("LIBYUV_DISABLE_MIPS_DSPR2")) {
|
|
cpu_info_ &= ~kCpuHasMIPS_DSPR2;
|
|
}
|
|
#elif defined(__arm__)
|
|
#if defined(__linux__) && (defined(__ARM_NEON__) || defined(LIBYUV_NEON)) && \
|
|
!defined(__native_client__)
|
|
// Linux arm parse text file for neon detect.
|
|
cpu_info_ = ArmCpuCaps("/proc/cpuinfo");
|
|
#elif defined(__ARM_NEON__) || defined(__native_client__)
|
|
// gcc -mfpu=neon defines __ARM_NEON__
|
|
// Enable Neon if you want support for Neon and Arm, and use MaskCpuFlags
|
|
// to disable Neon on devices that do not have it.
|
|
cpu_info_ = kCpuHasNEON;
|
|
#endif
|
|
cpu_info_ |= kCpuHasARM;
|
|
if (TestEnv("LIBYUV_DISABLE_NEON")) {
|
|
cpu_info_ &= ~kCpuHasNEON;
|
|
}
|
|
#endif // __arm__
|
|
if (TestEnv("LIBYUV_DISABLE_ASM")) {
|
|
cpu_info_ = 0;
|
|
}
|
|
return cpu_info_;
|
|
}
|
|
|
|
LIBYUV_API
|
|
void MaskCpuFlags(int enable_flags) {
|
|
cpu_info_ = InitCpuFlags() & enable_flags;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
} // namespace libyuv
|
|
#endif
|