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LibGfx: Implement is_animated() and frame_count() for webp plugin

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This commit is contained in:
Nico Weber 2023-02-25 22:15:34 -05:00 • committed by Linus Groh
parent 0393a37843
commit 3c5450b8be
2 changed files with 22 additions and 7 deletions
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22
Userland/Libraries/LibGfx/WebPLoader.cpp
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@ -519,8 +519,15 @@ ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> WebPImageDecoderPlugin::create(Readon
bool WebPImageDecoderPlugin::is_animated()
{
// FIXME
return false;
if (m_context->state == WebPLoadingContext::State::Error)
return false;
if (m_context->state < WebPLoadingContext::State::FirstChunkDecoded) {
if (decode_webp_first_chunk(*m_context).is_error())
return false;
}
return m_context->first_chunk->type == FourCC("VP8X") && m_context->vp8x_header.has_animation;
}
size_t WebPImageDecoderPlugin::loop_count()
@ -531,8 +538,15 @@ size_t WebPImageDecoderPlugin::loop_count()
size_t WebPImageDecoderPlugin::frame_count()
{
// FIXME
return 1;
if (!is_animated())
return 1;
if (m_context->state < WebPLoadingContext::State::ChunksDecoded) {
if (decode_webp_chunks(*m_context).is_error())
return 1;
}
return m_context->animation_frame_chunks.size();
}
ErrorOr<ImageFrameDescriptor> WebPImageDecoderPlugin::frame(size_t index)