| | | 1 | | #pragma warning disable CA1031 |
| | | 2 | | |
| | | 3 | | using System; |
| | | 4 | | using System.Linq; |
| | | 5 | | using System.Runtime.InteropServices; |
| | | 6 | | using System.Runtime.Versioning; |
| | | 7 | | using Microsoft.Extensions.Logging; |
| | | 8 | | |
| | | 9 | | namespace MediaBrowser.MediaEncoding.Encoder; |
| | | 10 | | |
| | | 11 | | /// <summary> |
| | | 12 | | /// Helper class for Apple platform specific operations. |
| | | 13 | | /// </summary> |
| | | 14 | | [SupportedOSPlatform("macos")] |
| | | 15 | | public static class ApplePlatformHelper |
| | | 16 | | { |
| | 0 | 17 | | private static readonly string[] _av1DecodeBlacklistedCpuClass = ["M1", "M2"]; |
| | | 18 | | |
| | | 19 | | private static string GetSysctlValue(ReadOnlySpan<byte> name) |
| | | 20 | | { |
| | 0 | 21 | | IntPtr length = IntPtr.Zero; |
| | | 22 | | // Get length of the value |
| | 0 | 23 | | int osStatus = SysctlByName(name, IntPtr.Zero, ref length, IntPtr.Zero, 0); |
| | | 24 | | |
| | 0 | 25 | | if (osStatus != 0) |
| | | 26 | | { |
| | 0 | 27 | | throw new NotSupportedException($"Failed to get sysctl value for {System.Text.Encoding.UTF8.GetString(name)} |
| | | 28 | | } |
| | | 29 | | |
| | 0 | 30 | | IntPtr buffer = Marshal.AllocHGlobal(length.ToInt32()); |
| | | 31 | | try |
| | | 32 | | { |
| | 0 | 33 | | osStatus = SysctlByName(name, buffer, ref length, IntPtr.Zero, 0); |
| | 0 | 34 | | if (osStatus != 0) |
| | | 35 | | { |
| | 0 | 36 | | throw new NotSupportedException($"Failed to get sysctl value for {System.Text.Encoding.UTF8.GetString(na |
| | | 37 | | } |
| | | 38 | | |
| | 0 | 39 | | return Marshal.PtrToStringAnsi(buffer) ?? string.Empty; |
| | | 40 | | } |
| | | 41 | | finally |
| | | 42 | | { |
| | 0 | 43 | | Marshal.FreeHGlobal(buffer); |
| | 0 | 44 | | } |
| | 0 | 45 | | } |
| | | 46 | | |
| | | 47 | | private static int SysctlByName(ReadOnlySpan<byte> name, IntPtr oldp, ref IntPtr oldlenp, IntPtr newp, uint newlen) |
| | | 48 | | { |
| | 0 | 49 | | return NativeMethods.SysctlByName(name.ToArray(), oldp, ref oldlenp, newp, newlen); |
| | | 50 | | } |
| | | 51 | | |
| | | 52 | | /// <summary> |
| | | 53 | | /// Check if the current system has hardware acceleration for AV1 decoding. |
| | | 54 | | /// </summary> |
| | | 55 | | /// <param name="logger">The logger used for error logging.</param> |
| | | 56 | | /// <returns>Boolean indicates the hwaccel support.</returns> |
| | | 57 | | public static bool HasAv1HardwareAccel(ILogger logger) |
| | | 58 | | { |
| | 0 | 59 | | if (!RuntimeInformation.OSArchitecture.Equals(Architecture.Arm64)) |
| | | 60 | | { |
| | 0 | 61 | | return false; |
| | | 62 | | } |
| | | 63 | | |
| | | 64 | | try |
| | | 65 | | { |
| | 0 | 66 | | string cpuBrandString = GetSysctlValue("machdep.cpu.brand_string"u8); |
| | 0 | 67 | | return !_av1DecodeBlacklistedCpuClass.Any(blacklistedCpuClass => cpuBrandString.Contains(blacklistedCpuClass |
| | | 68 | | } |
| | 0 | 69 | | catch (NotSupportedException e) |
| | | 70 | | { |
| | 0 | 71 | | logger.LogError("Error getting CPU brand string: {Message}", e.Message); |
| | 0 | 72 | | } |
| | 0 | 73 | | catch (Exception e) |
| | | 74 | | { |
| | 0 | 75 | | logger.LogError("Unknown error occured: {Exception}", e); |
| | 0 | 76 | | } |
| | | 77 | | |
| | 0 | 78 | | return false; |
| | 0 | 79 | | } |
| | | 80 | | |
| | | 81 | | private static class NativeMethods |
| | | 82 | | { |
| | | 83 | | [DllImport("libc", EntryPoint = "sysctlbyname", SetLastError = true)] |
| | | 84 | | [DefaultDllImportSearchPaths(DllImportSearchPath.SafeDirectories)] |
| | | 85 | | internal static extern int SysctlByName(byte[] name, IntPtr oldp, ref IntPtr oldlenp, IntPtr newp, uint newlen); |
| | | 86 | | } |
| | | 87 | | } |