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LibGfx/JPEG: Rename qtable_id => quantization_table_id

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Lucas CHOLLET 2023-04-21 21:14:19 -04:00 • committed by Andreas Kling
parent dd5d2e3505
commit 105a40f4f6
1 changed files with 8 additions and 8 deletions
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16
Userland/Libraries/LibGfx/ImageFormats/JPEGLoader.cpp
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@ -135,10 +135,10 @@ struct MacroblockMeta {
struct Component {
// B.2.2 - Frame header syntax
u8 id { 0 }; // Ci, Component identifier
u8 hsample_factor { 1 }; // Hi, Horizontal sampling factor
u8 vsample_factor { 1 }; // Vi, Vertical sampling factor
u8 qtable_id { 0 }; // Tqi, Quantization table destination selector
u8 id { 0 }; // Ci, Component identifier
u8 hsample_factor { 1 }; // Hi, Horizontal sampling factor
u8 vsample_factor { 1 }; // Vi, Vertical sampling factor
u8 quantization_table_id { 0 }; // Tqi, Quantization table destination selector
// The JPEG specification does not specify which component corresponds to
// Y, Cb or Cr. This field (actually the index in the parent Vector) will
@ -1063,7 +1063,7 @@ static ErrorOr<void> read_start_of_frame(Stream& stream, JPEGLoadingContext& con
}
}
component.qtable_id = TRY(stream.read_value<u8>());
component.quantization_table_id = TRY(stream.read_value<u8>());
context.components.append(move(component));
}
@ -1128,12 +1128,12 @@ static ErrorOr<void> dequantize(JPEGLoadingContext& context, Vector<Macroblock>&
for (u32 i = 0; i < context.components.size(); i++) {
auto const& component = context.components[i];
if (!context.quantization_tables[component.qtable_id].has_value()) {
dbgln_if(JPEG_DEBUG, "Unknown quantization table id: {}!", component.qtable_id);
if (!context.quantization_tables[component.quantization_table_id].has_value()) {
dbgln_if(JPEG_DEBUG, "Unknown quantization table id: {}!", component.quantization_table_id);
return Error::from_string_literal("Unknown quantization table id");
}
auto const& table = context.quantization_tables[component.qtable_id].value();
auto const& table = context.quantization_tables[component.quantization_table_id].value();
for (u32 vfactor_i = 0; vfactor_i < component.vsample_factor; vfactor_i++) {
for (u32 hfactor_i = 0; hfactor_i < component.hsample_factor; hfactor_i++) {