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LibVideo/VP9: Move TreeSelection class to TreeParser.cpp

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The class no longer needs to be defined in the header, as it is only
used in static functions.
This commit is contained in:
Zaggy1024 2023-01-22 17:43:30 -06:00 • committed by Linus Groh
parent c4a3af12fc
commit 42606c87e3
2 changed files with 40 additions and 41 deletions
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52
Userland/Libraries/LibVideo/VP9/TreeParser.cpp
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@ -22,8 +22,36 @@ namespace Video::VP9 {
// - 9.3.2: Probability selection based on context and often the node of the tree.
// - 9.3.4: Counting each syntax element when it is read.
class TreeSelection {
public:
union TreeSelectionValue {
int const* m_tree;
int m_value;
};
constexpr TreeSelection(int const* values)
: m_is_single_value(false)
, m_value { .m_tree = values }
{
}
constexpr TreeSelection(int value)
: m_is_single_value(true)
, m_value { .m_value = value }
{
}
bool is_single_value() const { return m_is_single_value; }
int single_value() const { return m_value.m_value; }
int const* tree() const { return m_value.m_tree; }
private:
bool m_is_single_value;
TreeSelectionValue m_value;
};
template<typename OutputType>
inline ErrorOr<OutputType> parse_tree(BitStream& bit_stream, TreeParser::TreeSelection tree_selection, Function<u8(u8)> const& probability_getter)
inline ErrorOr<OutputType> parse_tree(BitStream& bit_stream, TreeSelection tree_selection, Function<u8(u8)> const& probability_getter)
{
// 9.3.3: The tree decoding function.
if (tree_selection.is_single_value())
@ -47,7 +75,7 @@ inline void increment_counter(u8& counter)
ErrorOr<Partition> TreeParser::parse_partition(BitStream& bit_stream, ProbabilityTables const& probability_table, SyntaxElementCounter& counter, 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)
{
// Tree array
TreeParser::TreeSelection tree = { PartitionSplit };
TreeSelection tree = { PartitionSplit };
if (has_rows && has_columns)
tree = { partition_tree };
else if (has_rows)
@ -91,7 +119,7 @@ ErrorOr<PredictionMode> TreeParser::parse_default_intra_mode(BitStream& bit_stre
// FIXME: This should use a struct for the above and left contexts.
// Tree
TreeParser::TreeSelection tree = { intra_mode_tree };
TreeSelection tree = { intra_mode_tree };
// Probabilities
PredictionMode above_mode, left_mode;
@ -119,7 +147,7 @@ ErrorOr<PredictionMode> TreeParser::parse_default_intra_mode(BitStream& bit_stre
ErrorOr<PredictionMode> TreeParser::parse_default_uv_mode(BitStream& bit_stream, ProbabilityTables const& probability_table, PredictionMode y_mode)
{
// Tree
TreeParser::TreeSelection tree = { intra_mode_tree };
TreeSelection tree = { intra_mode_tree };
// Probabilities
u8 const* probabilities = probability_table.kf_uv_mode_prob()[to_underlying(y_mode)];
@ -132,7 +160,7 @@ ErrorOr<PredictionMode> TreeParser::parse_default_uv_mode(BitStream& bit_stream,
ErrorOr<PredictionMode> TreeParser::parse_intra_mode(BitStream& bit_stream, ProbabilityTables const& probability_table, SyntaxElementCounter& counter, BlockSubsize mi_size)
{
// Tree
TreeParser::TreeSelection tree = { intra_mode_tree };
TreeSelection tree = { intra_mode_tree };
// Probabilities
auto context = size_group_lookup[mi_size];
@ -146,7 +174,7 @@ ErrorOr<PredictionMode> TreeParser::parse_intra_mode(BitStream& bit_stream, Prob
ErrorOr<PredictionMode> TreeParser::parse_sub_intra_mode(BitStream& bit_stream, ProbabilityTables const& probability_table, SyntaxElementCounter& counter)
{
// Tree
TreeParser::TreeSelection tree = { intra_mode_tree };
TreeSelection tree = { intra_mode_tree };
// Probabilities
u8 const* probabilities = probability_table.y_mode_probs()[0];
@ -159,7 +187,7 @@ ErrorOr<PredictionMode> TreeParser::parse_sub_intra_mode(BitStream& bit_stream,
ErrorOr<PredictionMode> TreeParser::parse_uv_mode(BitStream& bit_stream, ProbabilityTables const& probability_table, SyntaxElementCounter& counter, PredictionMode y_mode)
{
// Tree
TreeParser::TreeSelection tree = { intra_mode_tree };
TreeSelection tree = { intra_mode_tree };
// Probabilities
u8 const* probabilities = probability_table.uv_mode_probs()[to_underlying(y_mode)];
@ -187,7 +215,7 @@ ErrorOr<bool> TreeParser::parse_segment_id_predicted(BitStream& bit_stream, Arra
ErrorOr<PredictionMode> TreeParser::parse_inter_mode(BitStream& bit_stream, ProbabilityTables const& probability_table, SyntaxElementCounter& counter, u8 mode_context_for_ref_frame_0)
{
// Tree
TreeParser::TreeSelection tree = { inter_mode_tree };
TreeSelection tree = { inter_mode_tree };
// Probabilities
u8 const* probabilities = probability_table.inter_mode_probs()[mode_context_for_ref_frame_0];
@ -202,7 +230,7 @@ ErrorOr<InterpolationFilter> TreeParser::parse_interpolation_filter(BitStream& b
// FIXME: Above and left context should be provided by a struct.
// Tree
TreeParser::TreeSelection tree = { interp_filter_tree };
TreeSelection tree = { interp_filter_tree };
// Probabilities
// NOTE: SWITCHABLE_FILTERS is not used in the spec for this function. Therefore, the number
@ -240,7 +268,7 @@ ErrorOr<TransformSize> TreeParser::parse_tx_size(BitStream& bit_stream, Probabil
// FIXME: Above and left contexts should be in structs.
// Tree
TreeParser::TreeSelection tree { tx_size_8_tree };
TreeSelection tree { tx_size_8_tree };
if (max_tx_size == Transform_16x16)
tree = { tx_size_16_tree };
if (max_tx_size == Transform_32x32)
@ -598,7 +626,7 @@ ErrorOr<u8> TreeParser::parse_motion_vector_class0_fr(BitStream& bit_stream, Pro
ErrorOr<bool> TreeParser::parse_motion_vector_class0_hp(BitStream& bit_stream, ProbabilityTables const& probability_table, SyntaxElementCounter& counter, u8 component, bool use_hp)
{
TreeParser::TreeSelection tree { 1 };
TreeSelection tree { 1 };
if (use_hp)
tree = { binary_tree };
auto value = TRY(parse_tree<bool>(bit_stream, tree, [&](u8) { return probability_table.mv_class0_hp_prob()[component]; }));
@ -622,7 +650,7 @@ ErrorOr<u8> TreeParser::parse_motion_vector_fr(BitStream& bit_stream, Probabilit
ErrorOr<bool> TreeParser::parse_motion_vector_hp(BitStream& bit_stream, ProbabilityTables const& probability_table, SyntaxElementCounter& counter, u8 component, bool use_hp)
{
TreeParser::TreeSelection tree { 1 };
TreeSelection tree { 1 };
if (use_hp)
tree = { binary_tree };
auto value = TRY(parse_tree<u8>(bit_stream, tree, [&](u8) { return probability_table.mv_hp_prob()[component]; }));