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LibGfx+Fallout: Make ImageDecoder return ErrorOr

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...from try_create_for_raw_bytes().

If a plugin returns `true` from sniff but then fails when calling
its `create()` method, we now no longer swallow that error.

Allows `image` (and other places in the system) to print a more
actionable error if early image headers are invalid.

(We now no longer try to find another plugin that can also handle
the image.)

Fixes a regression from #20063 / #19893 -- before then, we didn't
do fallible work this early.
This commit is contained in:
Nico Weber 2024-03-04 18:07:43 -05:00 • committed by Tim Flynn
parent be5e7a360f
commit 2e2cae26c6
12 changed files with 22 additions and 22 deletions
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5
Userland/Services/ImageDecoder/ConnectionFromClient.cpp
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@ -43,11 +43,12 @@ static void decode_image_to_details(Core::AnonymousBuffer const& encoded_buffer,
VERIFY(bitmaps.size() == 0);
VERIFY(durations.size() == 0);
auto decoder = Gfx::ImageDecoder::try_create_for_raw_bytes(ReadonlyBytes { encoded_buffer.data<u8>(), encoded_buffer.size() }, known_mime_type);
if (!decoder) {
auto decoder_or_err = Gfx::ImageDecoder::try_create_for_raw_bytes(ReadonlyBytes { encoded_buffer.data<u8>(), encoded_buffer.size() }, known_mime_type);
if (decoder_or_err.is_error() || !decoder_or_err.value()) {
dbgln_if(IMAGE_DECODER_DEBUG, "Could not find suitable image decoder plugin for data");
return;
}
auto decoder = decoder_or_err.release_value();
if (!decoder->frame_count()) {
dbgln_if(IMAGE_DECODER_DEBUG, "Could not decode image from encoded data");