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LibVideo/VP9: Move quantizer indices into FrameContext

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This also renames (most?) of the related quantizer functions and
variables to make more sense. I haven't determined what AC/DC stands
for here, but it may be just an arbitrary naming scheme for the first
and subsequent coefficients used to quantize the residuals for a block.
This commit is contained in:
Zaggy1024 2022-11-23 06:26:02 -06:00 • committed by Andreas Kling
parent 0df5c1f32f
commit f4e835635f
5 changed files with 50 additions and 42 deletions
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10
Userland/Libraries/LibVideo/VP9/Context.h
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@ -311,6 +311,16 @@ public:
Array<i8, MAX_REF_FRAMES> loop_filter_reference_deltas;
Array<i8, 2> loop_filter_mode_deltas;
u8 base_quantizer_index { 0 };
i8 y_dc_quantizer_index_delta { 0 };
i8 uv_dc_quantizer_index_delta { 0 };
i8 uv_ac_quantizer_index_delta { 0 };
bool is_lossless() const
{
// From quantization_params( ) in the spec.
return base_quantizer_index == 0 && y_dc_quantizer_index_delta == 0 && uv_dc_quantizer_index_delta == 0 && uv_ac_quantizer_index_delta == 0;
}
u16 header_size_in_bytes { 0 };
private: