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Extract WebP Codec

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This commit is contained in:
Crsky
2026-04-12 18:49:53 +08:00
parent 7ea9381367
commit 6cff1b96d4
4 changed files with 72 additions and 69 deletions
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39
ArcFormats/Artemis/ImageNekoPNG.cs
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@@ -65,10 +65,10 @@ namespace GameRes.Formats.Artemis
data[j] -= (byte)(0x77 * j);
var slice_width = 0;
var slice_height = 0;
if (1 != WebPGetInfo (data, (UIntPtr)data.Length, ref slice_width, ref slice_height))
if (1 != WebPCodec.WebPGetInfo(data, (UIntPtr)data.Length, ref slice_width, ref slice_height))
throw new InvalidFormatException("WebP image decoder failed.");
var slice_size = stride * slice_height;
if (IntPtr.Zero == WebPDecodeBGRAInto (data, (UIntPtr)data.Length, output, (UIntPtr)slice_size, stride))
if (IntPtr.Zero == WebPCodec.WebPDecodeBGRAInto (data, (UIntPtr)data.Length, output, (UIntPtr)slice_size, stride))
throw new InvalidFormatException("WebP image decoder failed.");
output += slice_size;
}
@@ -94,7 +94,7 @@ namespace GameRes.Formats.Artemis
offset[i] = file.ReadInt32();
for (var i = 0; i < 8; i++)
length[i] = file.ReadInt32();
LibWebPLoader.Load();
WebPCodec.Load();
var image_width = 0;
var image_height = 0;
for (var i = 0; i < 8; i++)
@@ -111,7 +111,7 @@ namespace GameRes.Formats.Artemis
webp_header[j] -= (byte)(0x77 * j);
var slice_width = 0;
var slice_height = 0;
if (1 != WebPGetInfo (webp_header, (UIntPtr)webp_header.Length, ref slice_width, ref slice_height))
if (1 != WebPCodec.WebPGetInfo (webp_header, (UIntPtr)webp_header.Length, ref slice_width, ref slice_height))
throw new InvalidFormatException ("WebP image decoder failed.");
image_width = Math.Max (image_width, slice_width);
image_height += slice_height;
@@ -130,36 +130,5 @@ namespace GameRes.Formats.Artemis
{
throw new NotImplementedException("ImageNekoPNG.Write not implemented");
}
[DllImport("libwebp.dll", EntryPoint = "WebPGetInfo", CallingConvention = CallingConvention.Cdecl)]
public static extern int WebPGetInfo ([MarshalAs(UnmanagedType.LPArray)] byte[] data, UIntPtr data_size, ref int width, ref int height);
[DllImport("libwebp.dll", EntryPoint = "WebPDecodeBGRAInto", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr WebPDecodeBGRAInto ([MarshalAs(UnmanagedType.LPArray)] byte[] data, UIntPtr data_size, IntPtr output_buffer, UIntPtr output_buffer_size, int output_stride);
}
internal static class LibWebPLoader
{
[DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.StdCall)]
static extern IntPtr LoadLibraryEx (string lpFileName, IntPtr hReservedNull, uint dwFlags);
static bool loaded = false;
const uint LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR = 0x00000100;
const uint LOAD_LIBRARY_SEARCH_SYSTEM32 = 0x00000800;
public static void Load ()
{
if (loaded)
return;
var folder = Path.GetDirectoryName (Assembly.GetExecutingAssembly().Location);
folder = Path.Combine (folder, (IntPtr.Size == 4) ? "x86" : "x64");
var fullPath = Path.Combine (folder, "libwebp.dll");
fullPath = Path.GetFullPath (fullPath);
var handle = LoadLibraryEx (fullPath, IntPtr.Zero, LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR | LOAD_LIBRARY_SEARCH_SYSTEM32);
if (IntPtr.Zero == handle)
throw new Win32Exception (Marshal.GetLastWin32Error());
loaded = true;
}
}
}