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LibGfx+JPGLoader: Fix decoding outside of LibWeb

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The DC reset interval was initialized to garbage :)
This commit is contained in:
devashish 2020-06-27 20:50:16 +05:30 committed by Andreas Kling
parent 58a5af1dcd
commit 1eb338ab71
Notes: sideshowbarker 2024-07-19 05:21:15 +09:00 
Author: https://github.com/devsh0
Commit: https://github.com/SerenityOS/serenity/commit/1eb338ab71b
Pull-request: https://github.com/SerenityOS/serenity/pull/2635
Issue: https://github.com/SerenityOS/serenity/issues/2636
Reviewed-by: https://github.com/awesomekling
1 changed files with 21 additions and 21 deletions
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42
Libraries/LibGfx/JPGLoader.cpp
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@ -135,21 +135,21 @@ struct Macroblock {
};
struct MacroblockMeta {
u32 total;
u32 padded_total;
u32 hcount;
u32 vcount;
u32 hpadded_count;
u32 vpadded_count;
u32 total { 0 };
u32 padded_total { 0 };
u32 hcount { 0 };
u32 vcount { 0 };
u32 hpadded_count { 0 };
u32 vpadded_count { 0 };
};
struct ComponentSpec {
i8 id { -1 };
u8 hsample_factor { 1 }; // Horizontal sampling factor.
u8 vsample_factor { 1 }; // Vertical sampling factor.
u8 ac_destination_id;
u8 dc_destination_id;
u8 qtable_id; // Quantization table id.
u8 ac_destination_id { 0 };
u8 dc_destination_id { 0 };
u8 qtable_id { 0 }; // Quantization table id.
};
struct StartOfFrame {
@ -159,14 +159,14 @@ struct StartOfFrame {
};
FrameType type { FrameType::Baseline };
u8 precision;
u16 height;
u16 width;
u8 precision { 0 };
u16 height { 0 };
u16 width { 0 };
};
struct HuffmanTableSpec {
u8 type;
u8 destination_id;
u8 type { 0 };
u8 destination_id { 0 };
u8 code_counts[16] = { 0 };
Vector<u8> symbols;
Vector<u16> codes;
@ -189,16 +189,16 @@ struct JPGLoadingContext {
State state { State::NotDecoded };
const u8* data { nullptr };
size_t data_size { 0 };
u32 luma_table[64];
u32 chroma_table[64];
u32 luma_table[64] = { 0 };
u32 chroma_table[64] = { 0 };
StartOfFrame frame;
u8 hsample_factor;
u8 vsample_factor;
bool has_zero_based_ids;
u8 component_count;
u8 hsample_factor { 0 };
u8 vsample_factor { 0 };
bool has_zero_based_ids { false };
u8 component_count { 0 };
ComponentSpec components[3];
RefPtr<Gfx::Bitmap> bitmap;
u16 dc_reset_interval;
u16 dc_reset_interval { 0 };
Vector<HuffmanTableSpec> dc_tables;
Vector<HuffmanTableSpec> ac_tables;
HuffmanStreamState huffman_stream;