LibGfx: Add first_animated_frame_index method to ImageDecoder

Some image formats such as APNG may not use the first frame for animations.
Author: https://github.com/tomuta Commit: e7921cfe14 Pull-request: https://github.com/SerenityOS/serenity/pull/18258 Reviewed-by: https://github.com/nico
2025-07-28 19:59:17 +00:00 · 2023-04-07 20:41:22 -06:00 · 2023-04-07 20:41:22 -06:00 · e7921cfe14 · 2024-07-17 04:09:56 +09:00
commit e7921cfe14
parent 5a4c61838f
20 changed files with 64 additions and 4 deletions
--- a/Userland/Libraries/LibGfx/ImageFormats/JPEGLoader.cpp
+++ b/Userland/Libraries/LibGfx/ImageFormats/JPEGLoader.cpp
@ -1801,6 +1801,11 @@ size_t JPEGImageDecoderPlugin::frame_count()
    return 1;
 }

+size_t JPEGImageDecoderPlugin::first_animated_frame_index()
+{
+    return 0;
+}
+
 ErrorOr<ImageFrameDescriptor> JPEGImageDecoderPlugin::frame(size_t index)
 {
    if (index > 0)