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Gtk: Try to avoid garbage collection for LibTiffStreamClient

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This commit is contained in:
Ben Olden-Cooligan 2022-12-28 22:07:48 -08:00
parent 4bfc090532
commit 7aac38d163
1 changed files with 4 additions and 7 deletions
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11
NAPS2.Images.Gtk/LibTiffIo.cs
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@ -1,3 +1,4 @@
using System.Runtime.InteropServices;
using NAPS2.Images.Bitwise;
using NAPS2.Util;
@ -129,16 +130,11 @@ internal class LibTiffIo : ITiffWriter
EnumerateTiffFrames(produceImage, tiff, progress, client);
}
public void LoadTiff(Action<IMemoryImage> produceImage, string path, ProgressHandler progress)
{
var tiff = LibTiff.TIFFOpen(path, "r");
EnumerateTiffFrames(produceImage, tiff, progress);
}
private void EnumerateTiffFrames(Action<IMemoryImage> produceImage, IntPtr tiff,
ProgressHandler progress, LibTiffStreamClient? client = null)
ProgressHandler progress, LibTiffStreamClient client)
{
// We keep a reference to the client to avoid garbage collection
var handle = GCHandle.Alloc(client);
try
{
var count = LibTiff.TIFFNumberOfDirectories(tiff);
@ -167,6 +163,7 @@ internal class LibTiffIo : ITiffWriter
finally
{
LibTiff.TIFFClose(tiff);
handle.Free();
}
}