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67 lines
1.4 KiB
67 lines
1.4 KiB
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/* contrib/mips-msa/linux.c |
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* |
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* Copyright (c) 2020 Cosmin Truta |
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* Copyright (c) 2016 Glenn Randers-Pehrson |
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* Written by Mandar Sahastrabuddhe, 2016. |
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* |
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* This code is released under the libpng license. |
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* For conditions of distribution and use, see the disclaimer |
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* and license in png.h |
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* |
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* SEE contrib/mips-msa/README before reporting bugs |
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* |
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* STATUS: SUPPORTED |
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* BUG REPORTS: png-mng-implement@sourceforge.net |
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* |
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* png_have_msa implemented for Linux by reading the widely available |
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* pseudo-file /proc/cpuinfo. |
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* |
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* This code is strict ANSI-C and is probably moderately portable; it does |
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* however use <stdio.h> and it assumes that /proc/cpuinfo is never localized. |
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*/ |
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#include <stdio.h> |
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#include <string.h> |
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#include <stdlib.h> |
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static int |
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png_have_msa(png_structp png_ptr) |
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{ |
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FILE *f = fopen("/proc/cpuinfo", "rb"); |
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char *string = "msa"; |
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char word[10]; |
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if (f != NULL) |
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{ |
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while(!feof(f)) |
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{ |
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int ch = fgetc(f); |
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static int i = 0; |
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while(!(ch <= 32)) |
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{ |
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word[i++] = ch; |
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ch = fgetc(f); |
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} |
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int val = strcmp(string, word); |
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if (val == 0) { |
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fclose(f); |
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return 1; |
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} |
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i = 0; |
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memset(word, 0, 10); |
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} |
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fclose(f); |
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} |
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#ifdef PNG_WARNINGS_SUPPORTED |
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else |
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png_warning(png_ptr, "/proc/cpuinfo open failed"); |
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#endif |
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return 0; |
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}
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