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Last change
on this file since 92274 was 76030, checked in by vboxsync, 6 years ago |
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libpng-1.6.36: properly export to OSE, and while at it fix EOL style for shell scripts
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Property svn:eol-style
set to
native
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File size:
1.3 KB
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| 1 | /* contrib/powerpc-vsx/linux.c
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| 2 | *
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| 3 | * Copyright (c) 2017 Glenn Randers-Pehrson
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| 4 | * Written by Vadim Barkov, 2017.
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| 5 | * Last changed in libpng 1.6.29 [March 16, 2017]
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| 6 | *
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| 7 | * This code is released under the libpng license.
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| 8 | * For conditions of distribution and use, see the disclaimer
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| 9 | * and license in png.h
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| 10 | *
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| 11 | * STATUS: TESTED
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| 12 | * BUG REPORTS: [email protected]
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| 13 | *
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| 14 | * png_have_vsx implemented for Linux by reading the widely available
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| 15 | * pseudo-file /proc/cpuinfo.
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| 16 | *
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| 17 | * This code is strict ANSI-C and is probably moderately portable; it does
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| 18 | * however use <stdio.h> and it assumes that /proc/cpuinfo is never localized.
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| 19 | */
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| 20 |
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| 21 | #include <stdio.h>
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| 22 | #include <string.h>
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| 23 | #include <stdlib.h>
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| 24 | #include "png.h"
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| 25 |
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| 26 | #ifndef MAXLINE
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| 27 | # define MAXLINE 1024
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| 28 | #endif
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| 29 |
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| 30 | static int
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| 31 | png_have_vsx(png_structp png_ptr)
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| 32 | {
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| 33 | FILE *f;
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| 34 |
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| 35 | const char *string = "altivec supported";
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| 36 | char input[MAXLINE];
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| 37 | char *token = NULL;
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| 38 |
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| 39 | PNG_UNUSED(png_ptr)
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| 40 |
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| 41 | f = fopen("/proc/cpuinfo", "r");
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| 42 | if (f != NULL)
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| 43 | {
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| 44 | memset(input,0,MAXLINE);
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| 45 | while(fgets(input,MAXLINE,f) != NULL)
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| 46 | {
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| 47 | token = strstr(input,string);
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| 48 | if(token != NULL)
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| 49 | return 1;
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| 50 | }
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| 51 | }
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| 52 | #ifdef PNG_WARNINGS_SUPPORTED
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| 53 | else
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| 54 | png_warning(png_ptr, "/proc/cpuinfo open failed");
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| 55 | #endif
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| 56 | return 0;
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| 57 | }
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