diff options
| -rw-r--r-- | libavutil/arm/cpu.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/libavutil/arm/cpu.c b/libavutil/arm/cpu.c index 041afc985a..b4aabc375e 100644 --- a/libavutil/arm/cpu.c +++ b/libavutil/arm/cpu.c @@ -34,6 +34,8 @@ #include <stdint.h> #include <stdio.h> +#include <string.h> +#include "libavutil/avstring.h" #define AT_HWCAP 16 @@ -66,13 +68,44 @@ static int get_hwcap(uint32_t *hwcap) return err; } +static int get_cpuinfo(uint32_t *hwcap) +{ + FILE *f = fopen("/proc/cpuinfo", "r"); + char buf[200]; + + if (!f) + return -1; + + *hwcap = 0; + while (fgets(buf, sizeof(buf), f)) { + if (av_strstart(buf, "Features", NULL)) { + if (strstr(buf, " edsp ")) + *hwcap |= HWCAP_EDSP; + if (strstr(buf, " tls ")) + *hwcap |= HWCAP_TLS; + if (strstr(buf, " thumbee ")) + *hwcap |= HWCAP_THUMBEE; + if (strstr(buf, " vfp ")) + *hwcap |= HWCAP_VFP; + if (strstr(buf, " vfpv3 ")) + *hwcap |= HWCAP_VFPv3; + if (strstr(buf, " neon ")) + *hwcap |= HWCAP_NEON; + break; + } + } + fclose(f); + return 0; +} + int ff_get_cpu_flags_arm(void) { int flags = CORE_CPU_FLAGS; uint32_t hwcap; if (get_hwcap(&hwcap) < 0) - return flags; + if (get_cpuinfo(&hwcap) < 0) + return flags; #define check_cap(cap, flag) do { \ if (hwcap & HWCAP_ ## cap) \ |