[FFmpeg-devel] [PATCH 02/16] configure, avutil: add support for HorizonOS

[Rémi Denis-Courmont]

Le torstaina 30. toukokuuta 2024, 22.43.04 EEST averne a écrit :
> HorizonOS (HOS) is the operating system of the Nintendo Switch.
> This patch enables integration with the homebrew toolchain developped by the
> devkitPro team. Its two main components are devkitA64 (common toolchain for
> aarch64 targets) and libnx (library implementing interaction with the HOS
> kernel and system daemons, termed sysmodules).
> 
> Signed-off-by: averne <averne381 at gmail.com>
> ---
>  configure       | 8 ++++++++
>  libavutil/cpu.c | 7 +++++++
>  2 files changed, 15 insertions(+)
> 
> diff --git a/configure b/configure
> index 96b181fd21..09fb2aed1b 100755
> --- a/configure
> +++ b/configure
> @@ -5967,6 +5967,10 @@ case $target_os in
>          ;;
>      minix)
>          ;;
> +    horizon)
> +        enable section_data_rel_ro
> +        add_extralibs -lnx
> +        ;;
>      none)
>          ;;
>      *)
> @@ -7710,6 +7714,10 @@ haiku)
>          disable memalign
>      fi
>      ;;
> +horizon)
> +    disable sysctl
> +    disable sysctlbyname
> +    ;;

Are those really broken, or is this just a trick to force a fallback? In the 
later case, you don't need to disable them; just to put the HOS code ahead of 
the generic BSD code.

>  esac
> 
>  flatten_extralibs(){
> diff --git a/libavutil/cpu.c b/libavutil/cpu.c
> index 9ac2f01c20..6a77df5e34 100644
> --- a/libavutil/cpu.c
> +++ b/libavutil/cpu.c
> @@ -48,6 +48,9 @@
>  #if HAVE_UNISTD_H
>  #include <unistd.h>
>  #endif
> +#ifdef __SWITCH__
> +#include <switch.h>
> +#endif
> 
>  static atomic_int cpu_flags = -1;
>  static atomic_int cpu_count = -1;
> @@ -247,6 +250,10 @@ int av_cpu_count(void)
>  #elif HAVE_WINRT
>      GetNativeSystemInfo(&sysinfo);
>      nb_cpus = sysinfo.dwNumberOfProcessors;
> +#elif defined(__SWITCH__)
> +    u64 core_mask = 0;
> +    Result rc = svcGetInfo(&core_mask, InfoType_CoreMask,
> CUR_PROCESS_HANDLE, 0); +    nb_cpus = R_SUCCEEDED(rc) ?
> av_popcount64(core_mask) : 3;
>  #endif
> 
>      if (!atomic_exchange_explicit(&printed, 1, memory_order_relaxed))


-- 
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