diff options
Diffstat (limited to 'media/libpng/mips/mips_init.c')
| -rw-r--r-- | media/libpng/mips/mips_init.c | 86 |
1 files changed, 80 insertions, 6 deletions
diff --git a/media/libpng/mips/mips_init.c b/media/libpng/mips/mips_init.c index 8dd283deef..5c6fa1dbf1 100644 --- a/media/libpng/mips/mips_init.c +++ b/media/libpng/mips/mips_init.c @@ -1,9 +1,10 @@ /* mips_init.c - MSA optimised filter functions * - * Copyright (c) 2018 Cosmin Truta + * Copyright (c) 2018-2024 Cosmin Truta * Copyright (c) 2016 Glenn Randers-Pehrson - * Written by Mandar Sahastrabuddhe, 2016. + * Written by Mandar Sahastrabuddhe, 2016 + * Updated by guxiwei, 2023 * * This code is released under the libpng license. * For conditions of distribution and use, see the disclaimer @@ -20,8 +21,9 @@ #ifdef PNG_READ_SUPPORTED -#if PNG_MIPS_MSA_OPT > 0 -#ifdef PNG_MIPS_MSA_CHECK_SUPPORTED /* Do run-time checks */ +#if PNG_MIPS_MSA_IMPLEMENTATION == 1 || PNG_MIPS_MMI_IMPLEMENTATION > 0 + +#ifdef PNG_MIPS_MSA_CHECK_SUPPORTED /* Do MIPS MSA run-time checks */ /* WARNING: it is strongly recommended that you do not build libpng with * run-time checks for CPU features if at all possible. In the case of the MIPS * MSA instructions there is no processor-specific way of detecting the @@ -51,13 +53,83 @@ static int png_have_msa(png_structp png_ptr); #endif /* PNG_MIPS_MSA_FILE */ #endif /* PNG_MIPS_MSA_CHECK_SUPPORTED */ +#ifdef PNG_MIPS_MMI_CHECK_SUPPORTED /* Do MIPS MMI run-times checks */ +#ifndef PNG_MIPS_MMI_FILE +# ifdef __linux__ +# define PNG_MIPS_MMI_FILE "contrib/mips-mmi/linux.c" +# endif +#endif + +#ifdef PNG_MIPS_MMI_FILE + +#include <signal.h> /* for sig_atomic_t */ +static int png_have_mmi(); +#include PNG_MIPS_MMI_FILE + +#else /* PNG_MIPS_MMI_FILE */ +# error "PNG_MIPS_MMI_FILE undefined: no support for run-time MIPS MMI checks" +#endif /* PNG_MIPS_MMI_FILE */ +#endif /* PNG_MIPS_MMI_CHECK_SUPPORTED*/ + #ifndef PNG_ALIGNED_MEMORY_SUPPORTED # error "ALIGNED_MEMORY is required; set: -DPNG_ALIGNED_MEMORY_SUPPORTED" #endif +/* MIPS supports two optimizations: MMI and MSA. The appropriate + * optimization is chosen at runtime + */ void -png_init_filter_functions_msa(png_structp pp, unsigned int bpp) +png_init_filter_functions_mips(png_structp pp, unsigned int bpp) { +#if PNG_MIPS_MMI_IMPLEMENTATION > 0 +#ifdef PNG_MIPS_MMI_API_SUPPORTED + switch ((pp->options >> PNG_MIPS_MMI) & 3) + { + case PNG_OPTION_UNSET: +#endif /* PNG_MIPS_MMI_API_SUPPORTED */ +#ifdef PNG_MIPS_MMI_CHECK_SUPPORTED + { + static volatile sig_atomic_t no_mmi = -1; /* not checked */ + + if (no_mmi < 0) + no_mmi = !png_have_mmi(); + + if (no_mmi) + goto MIPS_MSA_INIT; + } +#ifdef PNG_MIPS_MMI_API_SUPPORTED + break; +#endif +#endif /* PNG_MIPS_MMI_CHECK_SUPPORTED */ + +#ifdef PNG_MIPS_MMI_API_SUPPORTED + default: /* OFF or INVALID */ + goto MIPS_MSA_INIT; + + case PNG_OPTION_ON: + /* Option turned on */ + break; + } +#endif + pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_mmi; + if (bpp == 3) + { + pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_mmi; + pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_mmi; + pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = + png_read_filter_row_paeth3_mmi; + } + else if (bpp == 4) + { + pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_mmi; + pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_mmi; + pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = + png_read_filter_row_paeth4_mmi; + } +#endif /* PNG_MIPS_MMI_IMPLEMENTATION > 0 */ + +MIPS_MSA_INIT: +#if PNG_MIPS_MSA_IMPLEMENTATION == 1 /* The switch statement is compiled in for MIPS_MSA_API, the call to * png_have_msa is compiled in for MIPS_MSA_CHECK. If both are defined * the check is only performed if the API has not set the MSA option on @@ -125,6 +197,8 @@ png_init_filter_functions_msa(png_structp pp, unsigned int bpp) pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_msa; pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = png_read_filter_row_paeth4_msa; } +#endif /* PNG_MIPS_MSA_IMPLEMENTATION == 1 */ + return; } -#endif /* PNG_MIPS_MSA_OPT > 0 */ +#endif /* PNG_MIPS_MSA_IMPLEMENTATION == 1 || PNG_MIPS_MMI_IMPLEMENTATION > 0 */ #endif /* READ */ |