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LibGfx/QOI: Decode the header in create() and remove initialize()

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This is done as a part of #19893.
This commit is contained in:
Lucas CHOLLET 2023-07-13 23:21:39 -04:00 committed by Andreas Kling
parent 5fd1ee0365
commit b14d51ba1b
Notes: sideshowbarker 2024-07-17 00:47:29 +09:00 
Author: https://github.com/LucasChollet
Commit: https://github.com/SerenityOS/serenity/commit/b14d51ba1b
Pull-request: https://github.com/SerenityOS/serenity/pull/20011
2 changed files with 5 additions and 27 deletions
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31
Userland/Libraries/LibGfx/ImageFormats/QOILoader.cpp
View file

@ -170,23 +170,9 @@ QOIImageDecoderPlugin::QOIImageDecoderPlugin(NonnullOwnPtr<Stream> stream)
IntSize QOIImageDecoderPlugin::size()
{
if (m_context->state < QOILoadingContext::State::HeaderDecoded) {
// FIXME: This is a weird API (inherited from ImageDecoderPlugin), should probably propagate errors by returning ErrorOr<IntSize>.
// For the time being, ignore the result and rely on the context's state.
(void)decode_header_and_update_context();
}
if (m_context->state == QOILoadingContext::State::Error)
return {};
return { m_context->header.width, m_context->header.height };
}
ErrorOr<void> QOIImageDecoderPlugin::initialize()
{
return decode_header_and_update_context();
}
bool QOIImageDecoderPlugin::sniff(ReadonlyBytes data)
{
FixedMemoryStream stream { { data.data(), data.size() } };
@ -196,7 +182,9 @@ bool QOIImageDecoderPlugin::sniff(ReadonlyBytes data)
ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> QOIImageDecoderPlugin::create(ReadonlyBytes data)
{
auto stream = TRY(try_make<FixedMemoryStream>(data));
return adopt_nonnull_own_or_enomem(new (nothrow) QOIImageDecoderPlugin(move(stream)));
auto plugin = TRY(adopt_nonnull_own_or_enomem(new (nothrow) QOIImageDecoderPlugin(move(stream))));
TRY(plugin->decode_header_and_update_context());
return plugin;
}
ErrorOr<ImageFrameDescriptor> QOIImageDecoderPlugin::frame(size_t index, Optional<IntSize>)
@ -207,12 +195,8 @@ ErrorOr<ImageFrameDescriptor> QOIImageDecoderPlugin::frame(size_t index, Optiona
// No one should try to decode the frame again after an error was already returned.
VERIFY(m_context->state != QOILoadingContext::State::Error);
if (m_context->state == QOILoadingContext::State::NotDecoded) {
TRY(decode_header_and_update_context());
if (m_context->state == QOILoadingContext::State::HeaderDecoded)
TRY(decode_image_and_update_context());
} else if (m_context->state == QOILoadingContext::State::HeaderDecoded) {
TRY(decode_image_and_update_context());
}
VERIFY(m_context->state == QOILoadingContext::State::ImageDecoded);
VERIFY(m_context->bitmap);
@ -222,13 +206,8 @@ ErrorOr<ImageFrameDescriptor> QOIImageDecoderPlugin::frame(size_t index, Optiona
ErrorOr<void> QOIImageDecoderPlugin::decode_header_and_update_context()
{
VERIFY(m_context->state < QOILoadingContext::State::HeaderDecoded);
auto error_or_header = decode_qoi_header(*m_context->stream);
if (error_or_header.is_error()) {
m_context->state = QOILoadingContext::State::Error;
return error_or_header.release_error();
}
m_context->header = TRY(decode_qoi_header(*m_context->stream));
m_context->state = QOILoadingContext::State::HeaderDecoded;
m_context->header = error_or_header.release_value();
return {};
}

1
Userland/Libraries/LibGfx/ImageFormats/QOILoader.h
View file

@ -45,7 +45,6 @@ public:
virtual IntSize size() override;
virtual ErrorOr<void> initialize() override;
virtual bool is_animated() override { return false; }
virtual size_t loop_count() override { return 0; }
virtual size_t frame_count() override { return 1; }