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LibVideo/VP9: Fully qualify all reference frame type enum values

Browse source 
Since the enum is used as an index to arrays, it unfortunately can't
be converted to an enum class, but at least we can make sure to use it
with the qualified enum name to make things a bit clearer.
This commit is contained in:
Zaggy1024 2022-11-26 11:15:58 -06:00 committed by Andreas Kling
parent db9f1a18f8
commit a4f14f220d
Notes: sideshowbarker 2024-07-17 10:31:19 +09:00 
Author: https://github.com/Zaggy1024
Commit: https://github.com/SerenityOS/serenity/commit/a4f14f220d
Pull-request: https://github.com/SerenityOS/serenity/pull/16238
5 changed files with 55 additions and 55 deletions
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2
Userland/Libraries/LibVideo/VP9/Context.h
View file

@ -82,7 +82,7 @@ public:
// This group of fields is only needed for inter-predicted frames.
Array<u8, 3> reference_frame_indices;
Array<bool, LastFrame + 3> reference_frame_sign_biases;
Array<bool, ReferenceFrameType::LastFrame + 3> reference_frame_sign_biases;
bool high_precision_motion_vectors_allowed { false };
InterpolationFilter interpolation_filter { InterpolationFilter::Switchable };

2
Userland/Libraries/LibVideo/VP9/Decoder.cpp
View file

@ -790,7 +790,7 @@ DecoderErrorOr<void> Decoder::predict_inter_block(u8 plane, BlockContext const&
// A variable refIdx specifying which reference frame is being used is set equal to
// ref_frame_idx[ ref_frame[ refList ] - LAST_FRAME ].
auto reference_frame_index = block_context.frame_context.reference_frame_indices[block_context.reference_frame_types[reference_index] - LastFrame];
auto reference_frame_index = block_context.frame_context.reference_frame_indices[block_context.reference_frame_types[reference_index] - ReferenceFrameType::LastFrame];
// It is a requirement of bitstream conformance that all the following conditions are satisfied:
// − 2 * FrameWidth >= RefFrameWidth[ refIdx ]

4
Userland/Libraries/LibVideo/VP9/Enums.h
View file

@ -37,9 +37,9 @@ enum InterpolationFilter : u8 {
};
enum ReferenceFrameType : u8 {
// 0 is both INTRA_FRAME and NONE because the value's meaning changes depending on which index they're in on the ref_frame array
// None represents both INTRA_FRAME and NONE in the spec. When the primary reference
// frame type is None, that means that the frame/block is not inter-predicted.
None = 0,
IntraFrame = 0,
LastFrame = 1,
GoldenFrame = 2,
AltRefFrame = 3,

34
Userland/Libraries/LibVideo/VP9/Parser.cpp
View file

@ -224,7 +224,7 @@ DecoderErrorOr<FrameContext> Parser::uncompressed_header()
reference_frames_to_update_flags = TRY_READ(m_bit_stream->read_f8());
for (auto i = 0; i < 3; i++) {
frame_context.reference_frame_indices[i] = TRY_READ(m_bit_stream->read_bits(3));
frame_context.reference_frame_sign_biases[LastFrame + i] = TRY_READ(m_bit_stream->read_bit());
frame_context.reference_frame_sign_biases[ReferenceFrameType::LastFrame + i] = TRY_READ(m_bit_stream->read_bit());
}
frame_size = TRY(parse_frame_size_with_refs(frame_context.reference_frame_indices));
render_size = TRY(parse_render_size(frame_size));
@ -535,10 +535,10 @@ DecoderErrorOr<void> Parser::parse_tile_counts(FrameContext& frame_context)
void Parser::setup_past_independence()
{
m_previous_block_contexts.reset();
m_previous_loop_filter_ref_deltas[IntraFrame] = 1;
m_previous_loop_filter_ref_deltas[LastFrame] = 0;
m_previous_loop_filter_ref_deltas[GoldenFrame] = -1;
m_previous_loop_filter_ref_deltas[AltRefFrame] = -1;
m_previous_loop_filter_ref_deltas[ReferenceFrameType::None] = 1;
m_previous_loop_filter_ref_deltas[ReferenceFrameType::LastFrame] = 0;
m_previous_loop_filter_ref_deltas[ReferenceFrameType::GoldenFrame] = -1;
m_previous_loop_filter_ref_deltas[ReferenceFrameType::AltRefFrame] = -1;
m_previous_loop_filter_mode_deltas.fill(0);
m_previous_should_use_absolute_segment_base_quantizer = false;
for (auto& segment_levels : m_previous_segmentation_features)
@ -700,15 +700,15 @@ static void setup_compound_reference_mode(FrameContext& frame_context)
{
ReferenceFrameType fixed_reference;
ReferenceFramePair variable_references;
if (frame_context.reference_frame_sign_biases[LastFrame] == frame_context.reference_frame_sign_biases[GoldenFrame]) {
fixed_reference = AltRefFrame;
variable_references = { LastFrame, GoldenFrame };
} else if (frame_context.reference_frame_sign_biases[LastFrame] == frame_context.reference_frame_sign_biases[AltRefFrame]) {
fixed_reference = GoldenFrame;
variable_references = { LastFrame, AltRefFrame };
if (frame_context.reference_frame_sign_biases[ReferenceFrameType::LastFrame] == frame_context.reference_frame_sign_biases[ReferenceFrameType::GoldenFrame]) {
fixed_reference = ReferenceFrameType::AltRefFrame;
variable_references = { ReferenceFrameType::LastFrame, ReferenceFrameType::GoldenFrame };
} else if (frame_context.reference_frame_sign_biases[ReferenceFrameType::LastFrame] == frame_context.reference_frame_sign_biases[ReferenceFrameType::AltRefFrame]) {
fixed_reference = ReferenceFrameType::GoldenFrame;
variable_references = { ReferenceFrameType::LastFrame, ReferenceFrameType::AltRefFrame };
} else {
fixed_reference = LastFrame;
variable_references = { GoldenFrame, AltRefFrame };
fixed_reference = ReferenceFrameType::LastFrame;
variable_references = { ReferenceFrameType::GoldenFrame, ReferenceFrameType::AltRefFrame };
}
frame_context.fixed_reference_type = fixed_reference;
frame_context.variable_reference_types = variable_references;
@ -1128,7 +1128,7 @@ u8 Parser::get_segment_id(BlockContext const& block_context)
DecoderErrorOr<bool> Parser::read_is_inter(BlockContext& block_context, FrameBlockContext above_context, FrameBlockContext left_context)
{
if (seg_feature_active(block_context, SEG_LVL_REF_FRAME))
return block_context.frame_context.segmentation_features[block_context.segment_id][SEG_LVL_REF_FRAME].value != IntraFrame;
return block_context.frame_context.segmentation_features[block_context.segment_id][SEG_LVL_REF_FRAME].value != ReferenceFrameType::None;
return TRY_READ(TreeParser::parse_block_is_inter_predicted(*m_bit_stream, *m_probability_tables, *m_syntax_element_counter, above_context, left_context));
}
@ -1211,7 +1211,7 @@ DecoderErrorOr<void> Parser::inter_block_mode_info(BlockContext& block_context,
DecoderErrorOr<void> Parser::read_ref_frames(BlockContext& block_context, FrameBlockContext above_context, FrameBlockContext left_context)
{
if (seg_feature_active(block_context, SEG_LVL_REF_FRAME)) {
block_context.reference_frame_types = { static_cast<ReferenceFrameType>(block_context.frame_context.segmentation_features[block_context.segment_id][SEG_LVL_REF_FRAME].value), None };
block_context.reference_frame_types = { static_cast<ReferenceFrameType>(block_context.frame_context.segmentation_features[block_context.segment_id][SEG_LVL_REF_FRAME].value), ReferenceFrameType::None };
return {};
}
@ -1552,14 +1552,14 @@ static void apply_sign_bias_to_motion_vector(FrameContext const& frame_context,
void Parser::add_motion_vector_if_reference_frame_type_is_different(BlockContext const& block_context, MotionVector candidate_vector, ReferenceFrameType ref_frame, Vector<MotionVector, 2>& list, bool use_prev)
{
auto first_candidate = get_motion_vector_from_current_or_previous_frame(block_context, candidate_vector, ReferenceIndex::Primary, use_prev);
if (first_candidate.type > ReferenceFrameType::IntraFrame && first_candidate.type != ref_frame) {
if (first_candidate.type > ReferenceFrameType::None && first_candidate.type != ref_frame) {
apply_sign_bias_to_motion_vector(block_context.frame_context, first_candidate, ref_frame);
add_motion_vector_to_list_deduped(first_candidate.vector, list);
}
auto second_candidate = get_motion_vector_from_current_or_previous_frame(block_context, candidate_vector, ReferenceIndex::Secondary, use_prev);
auto mvs_are_same = first_candidate.vector == second_candidate.vector;
if (second_candidate.type > ReferenceFrameType::IntraFrame && second_candidate.type != ref_frame && !mvs_are_same) {
if (second_candidate.type > ReferenceFrameType::None && second_candidate.type != ref_frame && !mvs_are_same) {
apply_sign_bias_to_motion_vector(block_context.frame_context, second_candidate, ref_frame);
add_motion_vector_to_list_deduped(second_candidate.vector, list);
}

68
Userland/Libraries/LibVideo/VP9/TreeParser.cpp
View file

@ -411,29 +411,29 @@ ErrorOr<bool> TreeParser::parse_single_ref_part_1(BitStream& bit_stream, Probabi
context = 2;
} else if (left.is_intra_predicted()) {
if (above.is_single_reference()) {
context = 4 * (above.ref_frames.primary == LastFrame);
context = 4 * (above.ref_frames.primary == ReferenceFrameType::LastFrame);
} else {
context = 1 + (above.ref_frames.primary == LastFrame || above.ref_frames.secondary == LastFrame);
context = 1 + (above.ref_frames.primary == ReferenceFrameType::LastFrame || above.ref_frames.secondary == ReferenceFrameType::LastFrame);
}
} else if (above.is_intra_predicted()) {
if (left.is_single_reference()) {
context = 4 * (left.ref_frames.primary == LastFrame);
context = 4 * (left.ref_frames.primary == ReferenceFrameType::LastFrame);
} else {
context = 1 + (left.ref_frames.primary == LastFrame || left.ref_frames.secondary == LastFrame);
context = 1 + (left.ref_frames.primary == ReferenceFrameType::LastFrame || left.ref_frames.secondary == ReferenceFrameType::LastFrame);
}
} else {
if (left.is_single_reference() && above.is_single_reference()) {
context = 2 * (above.ref_frames.primary == LastFrame) + 2 * (left.ref_frames.primary == LastFrame);
context = 2 * (above.ref_frames.primary == ReferenceFrameType::LastFrame) + 2 * (left.ref_frames.primary == ReferenceFrameType::LastFrame);
} else if (!left.is_single_reference() && !above.is_single_reference()) {
auto above_used_last_frame = above.ref_frames.primary == LastFrame || above.ref_frames.secondary == LastFrame;
auto left_used_last_frame = left.ref_frames.primary == LastFrame || left.ref_frames.secondary == LastFrame;
auto above_used_last_frame = above.ref_frames.primary == ReferenceFrameType::LastFrame || above.ref_frames.secondary == ReferenceFrameType::LastFrame;
auto left_used_last_frame = left.ref_frames.primary == ReferenceFrameType::LastFrame || left.ref_frames.secondary == ReferenceFrameType::LastFrame;
context = 1 + (above_used_last_frame || left_used_last_frame);
} else {
auto single_reference_type = above.is_single_reference() ? above.ref_frames.primary : left.ref_frames.primary;
auto compound_reference_a_type = above.is_single_reference() ? left.ref_frames.primary : above.ref_frames.primary;
auto compound_reference_b_type = above.is_single_reference() ? left.ref_frames.secondary : above.ref_frames.secondary;
context = compound_reference_a_type == LastFrame || compound_reference_b_type == LastFrame;
if (single_reference_type == LastFrame)
context = compound_reference_a_type == ReferenceFrameType::LastFrame || compound_reference_b_type == ReferenceFrameType::LastFrame;
if (single_reference_type == ReferenceFrameType::LastFrame)
context += 3;
}
}
@ -442,9 +442,9 @@ ErrorOr<bool> TreeParser::parse_single_ref_part_1(BitStream& bit_stream, Probabi
context = 2;
} else {
if (above.is_single_reference()) {
context = 4 * (above.ref_frames.primary == LastFrame);
context = 4 * (above.ref_frames.primary == ReferenceFrameType::LastFrame);
} else {
context = 1 + (above.ref_frames.primary == LastFrame || above.ref_frames.secondary == LastFrame);
context = 1 + (above.ref_frames.primary == ReferenceFrameType::LastFrame || above.ref_frames.secondary == ReferenceFrameType::LastFrame);
}
}
} else if (left.is_available) {
@ -452,9 +452,9 @@ ErrorOr<bool> TreeParser::parse_single_ref_part_1(BitStream& bit_stream, Probabi
context = 2;
} else {
if (left.is_single_reference()) {
context = 4 * (left.ref_frames.primary == LastFrame);
context = 4 * (left.ref_frames.primary == ReferenceFrameType::LastFrame);
} else {
context = 1 + (left.ref_frames.primary == LastFrame || left.ref_frames.secondary == LastFrame);
context = 1 + (left.ref_frames.primary == ReferenceFrameType::LastFrame || left.ref_frames.secondary == ReferenceFrameType::LastFrame);
}
}
} else {
@ -478,40 +478,40 @@ ErrorOr<bool> TreeParser::parse_single_ref_part_2(BitStream& bit_stream, Probabi
context = 2;
} else if (left.is_intra_predicted()) {
if (above.is_single_reference()) {
if (above.ref_frames.primary == LastFrame) {
if (above.ref_frames.primary == ReferenceFrameType::LastFrame) {
context = 3;
} else {
context = 4 * (above.ref_frames.primary == GoldenFrame);
context = 4 * (above.ref_frames.primary == ReferenceFrameType::GoldenFrame);
}
} else {
context = 1 + 2 * (above.ref_frames.primary == GoldenFrame || above.ref_frames.secondary == GoldenFrame);
context = 1 + 2 * (above.ref_frames.primary == ReferenceFrameType::GoldenFrame || above.ref_frames.secondary == ReferenceFrameType::GoldenFrame);
}
} else if (above.is_intra_predicted()) {
if (left.is_single_reference()) {
if (left.ref_frames.primary == LastFrame) {
if (left.ref_frames.primary == ReferenceFrameType::LastFrame) {
context = 3;
} else {
context = 4 * (left.ref_frames.primary == GoldenFrame);
context = 4 * (left.ref_frames.primary == ReferenceFrameType::GoldenFrame);
}
} else {
context = 1 + 2 * (left.ref_frames.primary == GoldenFrame || left.ref_frames.secondary == GoldenFrame);
context = 1 + 2 * (left.ref_frames.primary == ReferenceFrameType::GoldenFrame || left.ref_frames.secondary == ReferenceFrameType::GoldenFrame);
}
} else {
if (left.is_single_reference() && above.is_single_reference()) {
auto above_last = above.ref_frames.primary == LastFrame;
auto left_last = left.ref_frames.primary == LastFrame;
auto above_last = above.ref_frames.primary == ReferenceFrameType::LastFrame;
auto left_last = left.ref_frames.primary == ReferenceFrameType::LastFrame;
if (above_last && left_last) {
context = 3;
} else if (above_last) {
context = 4 * (left.ref_frames.primary == GoldenFrame);
context = 4 * (left.ref_frames.primary == ReferenceFrameType::GoldenFrame);
} else if (left_last) {
context = 4 * (above.ref_frames.primary == GoldenFrame);
context = 4 * (above.ref_frames.primary == ReferenceFrameType::GoldenFrame);
} else {
context = 2 * (above.ref_frames.primary == GoldenFrame) + 2 * (left.ref_frames.primary == GoldenFrame);
context = 2 * (above.ref_frames.primary == ReferenceFrameType::GoldenFrame) + 2 * (left.ref_frames.primary == ReferenceFrameType::GoldenFrame);
}
} else if (!left.is_single_reference() && !above.is_single_reference()) {
if (above.ref_frames.primary == left.ref_frames.primary && above.ref_frames.secondary == left.ref_frames.secondary) {
context = 3 * (above.ref_frames.primary == GoldenFrame || above.ref_frames.secondary == GoldenFrame);
context = 3 * (above.ref_frames.primary == ReferenceFrameType::GoldenFrame || above.ref_frames.secondary == ReferenceFrameType::GoldenFrame);
} else {
context = 2;
}
@ -519,29 +519,29 @@ ErrorOr<bool> TreeParser::parse_single_ref_part_2(BitStream& bit_stream, Probabi
auto single_reference_type = above.is_single_reference() ? above.ref_frames.primary : left.ref_frames.primary;
auto compound_reference_a_type = above.is_single_reference() ? left.ref_frames.primary : above.ref_frames.primary;
auto compound_reference_b_type = above.is_single_reference() ? left.ref_frames.secondary : above.ref_frames.secondary;
context = compound_reference_a_type == GoldenFrame || compound_reference_b_type == GoldenFrame;
if (single_reference_type == GoldenFrame) {
context = compound_reference_a_type == ReferenceFrameType::GoldenFrame || compound_reference_b_type == ReferenceFrameType::GoldenFrame;
if (single_reference_type == ReferenceFrameType::GoldenFrame) {
context += 3;
} else if (single_reference_type != AltRefFrame) {
} else if (single_reference_type != ReferenceFrameType::AltRefFrame) {
context = 1 + (2 * context);
}
}
}
} else if (above.is_available) {
if (above.is_intra_predicted() || (above.ref_frames.primary == LastFrame && above.is_single_reference())) {
if (above.is_intra_predicted() || (above.ref_frames.primary == ReferenceFrameType::LastFrame && above.is_single_reference())) {
context = 2;
} else if (above.is_single_reference()) {
context = 4 * (above.ref_frames.primary == GoldenFrame);
context = 4 * (above.ref_frames.primary == ReferenceFrameType::GoldenFrame);
} else {
context = 3 * (above.ref_frames.primary == GoldenFrame || above.ref_frames.secondary == GoldenFrame);
context = 3 * (above.ref_frames.primary == ReferenceFrameType::GoldenFrame || above.ref_frames.secondary == ReferenceFrameType::GoldenFrame);
}
} else if (left.is_available) {
if (left.is_intra_predicted() || (left.ref_frames.primary == LastFrame && left.is_single_reference())) {
if (left.is_intra_predicted() || (left.ref_frames.primary == ReferenceFrameType::LastFrame && left.is_single_reference())) {
context = 2;
} else if (left.is_single_reference()) {
context = 4 * (left.ref_frames.primary == GoldenFrame);
context = 4 * (left.ref_frames.primary == ReferenceFrameType::GoldenFrame);
} else {
context = 3 * (left.ref_frames.primary == GoldenFrame || left.ref_frames.secondary == GoldenFrame);
context = 3 * (left.ref_frames.primary == ReferenceFrameType::GoldenFrame || left.ref_frames.secondary == ReferenceFrameType::GoldenFrame);
}
} else {
context = 2;