mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 17:42:43 +00:00
24ae35086d
Errors are now deferred until `finish_decode()` is finished, meaning branches to return errors only need to occur at the end of a ranged decode. If VPX_DEBUG is enabled, a debug message will be printed immediately when an overread occurs. Average decoding times for `Tests/LibGfx/test-inputs/4.webp` improve by about 4.7% with this change, absolute decode times changing from 27.4ms±1.1ms down to 26.1ms±1.0ms.
79 lines
5.4 KiB
C++
79 lines
5.4 KiB
C++
/*
|
|
* Copyright (c) 2021, Hunter Salyer <thefalsehonesty@gmail.com>
|
|
* Copyright (c) 2022, Gregory Bertilson <zaggy1024@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "BooleanDecoder.h"
|
|
#include "ContextStorage.h"
|
|
#include "Enums.h"
|
|
#include "ProbabilityTables.h"
|
|
#include "SyntaxElementCounter.h"
|
|
|
|
namespace Video::VP9 {
|
|
|
|
class Parser;
|
|
|
|
struct BlockContext;
|
|
struct FrameBlockContext;
|
|
|
|
struct TokensContext {
|
|
TransformSize m_tx_size;
|
|
bool m_is_uv_plane;
|
|
bool m_is_inter;
|
|
u8 m_band;
|
|
u8 m_context_index;
|
|
};
|
|
|
|
class TreeParser {
|
|
public:
|
|
static Partition parse_partition(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, bool has_rows, bool has_columns, BlockSubsize block_subsize, u8 num_8x8, PartitionContextView above_partition_context, PartitionContextView left_partition_context, u32 row, u32 column, bool frame_is_intra);
|
|
static PredictionMode parse_default_intra_mode(BooleanDecoder&, ProbabilityTables const&, BlockSubsize mi_size, FrameBlockContext above, FrameBlockContext left, Array<PredictionMode, 4> const& block_sub_modes, u8 index_x, u8 index_y);
|
|
static PredictionMode parse_default_uv_mode(BooleanDecoder&, ProbabilityTables const&, PredictionMode y_mode);
|
|
static PredictionMode parse_intra_mode(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, BlockSubsize mi_size);
|
|
static PredictionMode parse_sub_intra_mode(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&);
|
|
static PredictionMode parse_uv_mode(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, PredictionMode y_mode);
|
|
static u8 parse_segment_id(BooleanDecoder&, Array<u8, 7> const& probabilities);
|
|
static bool parse_segment_id_predicted(BooleanDecoder&, Array<u8, 3> const& probabilities, u8 above_seg_pred_context, u8 left_seg_pred_context);
|
|
static PredictionMode parse_inter_mode(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, u8 mode_context_for_ref_frame_0);
|
|
static InterpolationFilter parse_interpolation_filter(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, FrameBlockContext above, FrameBlockContext left);
|
|
static bool parse_skip(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, FrameBlockContext above, FrameBlockContext left);
|
|
static TransformSize parse_tx_size(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, TransformSize max_tx_size, FrameBlockContext above, FrameBlockContext left);
|
|
static bool parse_block_is_inter_predicted(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, FrameBlockContext above, FrameBlockContext left);
|
|
static ReferenceMode parse_comp_mode(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, ReferenceFrameType comp_fixed_ref, FrameBlockContext above, FrameBlockContext left);
|
|
static ReferenceIndex parse_comp_ref(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, ReferenceFrameType comp_fixed_ref, ReferenceFramePair comp_var_ref, ReferenceIndex variable_reference_index, FrameBlockContext above, FrameBlockContext left);
|
|
static bool parse_single_ref_part_1(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, FrameBlockContext above, FrameBlockContext left);
|
|
static bool parse_single_ref_part_2(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, FrameBlockContext above, FrameBlockContext left);
|
|
|
|
static MvJoint parse_motion_vector_joint(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&);
|
|
static bool parse_motion_vector_sign(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, u8 component);
|
|
static MvClass parse_motion_vector_class(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, u8 component);
|
|
static bool parse_motion_vector_class0_bit(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, u8 component);
|
|
static u8 parse_motion_vector_class0_fr(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, u8 component, bool class_0_bit);
|
|
static bool parse_motion_vector_class0_hp(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, u8 component, bool use_hp);
|
|
static bool parse_motion_vector_bit(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, u8 component, u8 bit_index);
|
|
static u8 parse_motion_vector_fr(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, u8 component);
|
|
static bool parse_motion_vector_hp(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, u8 component, bool use_hp);
|
|
|
|
static TokensContext get_context_for_first_token(NonZeroTokensView above_non_zero_tokens, NonZeroTokensView left_non_zero_tokens, TransformSize transform_size, u8 plane, u32 sub_block_column, u32 sub_block_row, bool is_inter, u8 band);
|
|
static TokensContext get_context_for_other_tokens(Array<u8, 1024> token_cache, TransformSize transform_size, TransformSet transform_set, u8 plane, u16 token_position, bool is_inter, u8 band);
|
|
static bool parse_more_coefficients(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, TokensContext const& context);
|
|
static Token parse_token(BooleanDecoder&, ProbabilityTables const&, SyntaxElementCounter&, TokensContext const& context);
|
|
};
|
|
|
|
struct PartitionTreeContext {
|
|
bool has_rows;
|
|
bool has_columns;
|
|
BlockSubsize block_subsize;
|
|
u8 num_8x8;
|
|
Vector<u8> const& above_partition_context;
|
|
Vector<u8> const& left_partition_context;
|
|
u32 row;
|
|
u32 column;
|
|
bool frame_is_intra;
|
|
};
|
|
|
|
}
|