зеркало из https://github.com/mozilla/pjs.git
121 строка
3.4 KiB
C++
121 строка
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Tom Brinkman <reportbase@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "ycbcr_to_rgb565.h"
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//The logic for have_ycbcr_to_rgb565 is taken from pixman-cpu.c
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#if !defined (HAVE_ARM_NEON)
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int have_ycbcr_to_rgb565 ()
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{
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return 0;
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}
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <elf.h>
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#ifdef ANDROID
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int have_ycbcr_to_rgb565 ()
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{
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static int have_ycbcr_to_rgb565_initialized = 0;
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static int arm_has_neon = 0;
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if (!have_ycbcr_to_rgb565_initialized)
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{
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have_ycbcr_to_rgb565_initialized = 1;
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char buf[1024];
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const char* ver_token = "CPU architecture: ";
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FILE* f = fopen("/proc/cpuinfo", "r");
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if (!f) {
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return 0;
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}
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fread(buf, sizeof(char), 1024, f);
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arm_has_neon = strstr(buf, "neon") != NULL;
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fclose(f);
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}
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return arm_has_neon;
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}
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#else
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int have_ycbcr_to_rgb565 ()
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{
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static int have_ycbcr_to_rgb565_initialized = 0;
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static int arm_has_neon = 0;
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if (!have_ycbcr_to_rgb565_initialized)
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{
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have_ycbcr_to_rgb565_initialized = 1;
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int fd;
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Elf32_auxv_t aux;
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fd = open ("/proc/self/auxv", O_RDONLY);
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if (fd >= 0)
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{
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while (read (fd, &aux, sizeof(Elf32_auxv_t)) == sizeof(Elf32_auxv_t))
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{
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if (aux.a_type == AT_HWCAP)
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{
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uint32_t hwcap = aux.a_un.a_val;
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arm_has_neon = (hwcap & 4096) != 0;
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break;
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}
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}
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close (fd);
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}
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}
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return arm_has_neon;
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}
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#endif //ANDROID
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#endif //_MSC_VER
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