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https://github.com/SerenityOS/serenity
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LibVideo/VP9: Finish implementing block decoding (6.4.4)
Though technically block decoding calls into some other incomplete methods, so it isn't functionally complete yet. However, we are very close to being done with the 6.4.X sections :)
This commit is contained in:
FalseHonesty
Andreas Kling
parent
074fbd1b06
commit
27fdf8361c
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@ -32,7 +32,7 @@ enum ColorRange {
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FullSwing
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};
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enum InterpolationFilter {
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enum InterpolationFilter : u8 {
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EightTap = 0,
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EightTapSmooth = 1,
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EightTapSharp = 2,
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@ -40,7 +40,7 @@ enum InterpolationFilter {
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Switchable = 4
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};
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enum ReferenceFrame {
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enum ReferenceFrame : u8 {
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// 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
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None = 0,
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IntraFrame = 0,
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@ -49,7 +49,7 @@ enum ReferenceFrame {
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AltRefFrame = 3,
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};
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enum TXMode {
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enum TXMode : u8 {
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Only_4x4 = 0,
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Allow_8x8 = 1,
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Allow_16x16 = 2,
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@ -57,14 +57,14 @@ enum TXMode {
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TXModeSelect = 4,
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};
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enum TXSize {
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enum TXSize : u8 {
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TX_4x4 = 0,
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TX_8x8 = 1,
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TX_16x16 = 2,
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TX_32x32 = 3,
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};
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enum ReferenceMode {
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enum ReferenceMode : u8 {
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SingleReference = 0,
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CompoundReference = 1,
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ReferenceModeSelect = 2,
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@ -21,6 +21,37 @@ Parser::Parser(Decoder& decoder)
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{
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}
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Parser::~Parser()
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{
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cleanup_tile_allocations();
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if (m_prev_segment_ids)
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free(m_prev_segment_ids);
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}
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void Parser::cleanup_tile_allocations()
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{
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if (m_skips)
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free(m_skips);
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if (m_tx_sizes)
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free(m_tx_sizes);
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if (m_mi_sizes)
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free(m_mi_sizes);
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if (m_y_modes)
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free(m_y_modes);
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if (m_segment_ids)
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free(m_segment_ids);
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if (m_ref_frames)
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free(m_ref_frames);
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if (m_interp_filters)
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free(m_interp_filters);
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if (m_mvs)
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free(m_mvs);
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if (m_sub_mvs)
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free(m_sub_mvs);
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if (m_sub_modes)
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free(m_sub_modes);
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}
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/* (6.1) */
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bool Parser::parse_frame(ByteBuffer const& frame_data)
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{
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@ -400,15 +431,9 @@ bool Parser::setup_past_independence()
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}
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}
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m_segmentation_abs_or_delta_update = false;
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m_prev_segment_ids.clear();
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m_prev_segment_ids.ensure_capacity(m_mi_rows);
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for (auto row = 0u; row < m_mi_rows; row++) {
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Vector<u8> sub_vector = {};
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sub_vector.ensure_capacity(m_mi_cols);
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for (auto col = 0u; col < m_mi_cols; col++)
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sub_vector.append(0);
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m_prev_segment_ids.append(sub_vector);
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}
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if (m_prev_segment_ids)
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free(m_prev_segment_ids);
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m_prev_segment_ids = static_cast<u8*>(malloc(m_mi_rows * m_mi_cols));
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m_loop_filter_delta_enabled = true;
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m_loop_filter_ref_deltas[IntraFrame] = 1;
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m_loop_filter_ref_deltas[LastFrame] = 0;
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@ -714,10 +739,30 @@ bool Parser::setup_compound_reference_mode()
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return true;
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}
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void Parser::allocate_tile_data()
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{
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auto dimensions = m_mi_rows * m_mi_cols;
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if (dimensions == m_allocated_dimensions)
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return;
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cleanup_tile_allocations();
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m_skips = static_cast<bool*>(malloc(sizeof(bool) * dimensions));
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m_tx_sizes = static_cast<TXSize*>(malloc(sizeof(TXSize) * dimensions));
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m_mi_sizes = static_cast<u32*>(malloc(sizeof(u32) * dimensions));
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m_y_modes = static_cast<u8*>(malloc(sizeof(u8) * dimensions));
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m_segment_ids = static_cast<u8*>(malloc(sizeof(u8) * dimensions));
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m_ref_frames = static_cast<ReferenceFrame*>(malloc(sizeof(ReferenceFrame) * dimensions * 2));
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m_interp_filters = static_cast<InterpolationFilter*>(malloc(sizeof(InterpolationFilter) * dimensions));
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m_mvs = static_cast<InterMode*>(malloc(sizeof(InterMode) * dimensions * 2));
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m_sub_mvs = static_cast<InterMode*>(malloc(sizeof(InterMode) * dimensions * 2 * 4));
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m_sub_modes = static_cast<IntraMode*>(malloc(sizeof(IntraMode) * dimensions * 4));
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m_allocated_dimensions = dimensions;
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}
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bool Parser::decode_tiles()
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{
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auto tile_cols = 1 << m_tile_cols_log2;
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auto tile_rows = 1 << m_tile_rows_log2;
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allocate_tile_data();
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SAFE_CALL(clear_above_context());
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for (auto tile_row = 0; tile_row < tile_rows; tile_row++) {
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for (auto tile_col = 0; tile_col < tile_cols; tile_col++) {
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@ -732,7 +777,6 @@ bool Parser::decode_tiles()
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SAFE_CALL(m_bit_stream->exit_bool());
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}
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}
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return true;
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}
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@ -833,8 +877,32 @@ bool Parser::decode_block(u32 row, u32 col, u8 subsize)
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SAFE_CALL(mode_info());
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m_eob_total = 0;
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SAFE_CALL(residual());
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// FIXME: Finish implementing
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// note: when finished, re-enable calculate_default_intra_mode_probability's usage of m_sub_modes
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if (m_is_inter && subsize >= Block_8x8 && m_eob_total == 0)
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m_skip = true;
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for (size_t y = 0; y < num_8x8_blocks_high_lookup[subsize]; y++) {
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for (size_t x = 0; x < num_8x8_blocks_wide_lookup[subsize]; x++) {
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auto pos = (row + y) * m_mi_cols + (col + x);
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m_skips[pos] = m_skip;
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m_tx_sizes[pos] = m_tx_size;
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m_mi_sizes[pos] = m_mi_size;
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m_y_modes[pos] = m_y_mode;
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m_segment_ids[pos] = m_segment_id;
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for (size_t ref_list = 0; ref_list < 2; ref_list++)
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m_ref_frames[(pos * 2) + ref_list] = m_ref_frame[ref_list];
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if (m_is_inter) {
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m_interp_filters[pos] = m_interp_filter;
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for (size_t ref_list = 0; ref_list < 2; ref_list++) {
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auto pos_with_ref_list = pos * 2 + ref_list;
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m_mvs[pos_with_ref_list] = m_block_mvs[ref_list][3];
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for (size_t b = 0; b < 4; b++)
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m_sub_mvs[pos_with_ref_list * 4 + b] = m_block_mvs[ref_list][b];
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}
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} else {
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for (size_t b = 0; b < 4; b++)
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m_sub_modes[pos * 4 + b] = static_cast<IntraMode>(m_block_sub_modes[b]);
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}
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}
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}
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return true;
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}
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@ -916,10 +984,10 @@ bool Parser::read_tx_size(bool allow_select)
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bool Parser::inter_frame_mode_info()
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{
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m_left_ref_frame[0] = m_available_l ? m_ref_frames[m_mi_row][m_mi_col - 1][0] : IntraFrame;
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m_above_ref_frame[0] = m_available_u ? m_ref_frames[m_mi_row - 1][m_mi_col][0] : IntraFrame;
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m_left_ref_frame[1] = m_available_l ? m_ref_frames[m_mi_row][m_mi_col - 1][1] : None;
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m_above_ref_frame[1] = m_available_u ? m_ref_frames[m_mi_row - 1][m_mi_col][1] : None;
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m_left_ref_frame[0] = m_available_l ? m_ref_frames[m_mi_row * m_mi_cols + (m_mi_col - 1)] : IntraFrame;
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m_above_ref_frame[0] = m_available_u ? m_ref_frames[(m_mi_row - 1) * m_mi_cols + m_mi_col] : IntraFrame;
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m_left_ref_frame[1] = m_available_l ? m_ref_frames[m_mi_row * m_mi_cols + (m_mi_col - 1) + 1] : None;
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m_above_ref_frame[1] = m_available_u ? m_ref_frames[(m_mi_row - 1) * m_mi_cols + m_mi_col + 1] : None;
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m_left_intra = m_left_ref_frame[0] <= IntraFrame;
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m_above_intra = m_above_ref_frame[0] <= IntraFrame;
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m_left_single = m_left_ref_frame[1] <= None;
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@ -973,7 +1041,7 @@ u8 Parser::get_segment_id()
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u8 segment = 7;
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for (size_t y = 0; y < ymis; y++) {
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for (size_t x = 0; x < xmis; x++) {
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segment = min(segment, m_prev_segment_ids[m_mi_row + y][m_mi_col + x]);
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segment = min(segment, m_prev_segment_ids[(m_mi_row + y) + (m_mi_col + x)]);
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}
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}
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return segment;
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@ -1051,8 +1119,7 @@ bool Parser::inter_block_mode_info()
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for (auto x = 0; x < m_num_4x4_w; x++) {
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auto block = (idy + y) * 2 + idx + x;
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for (auto ref_list = 0; ref_list < 1 + is_compound; ref_list++) {
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(void)block;
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// TODO: m_block_mvs[ref_list][block] = m_mv[ref_list];
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m_block_mvs[ref_list][block] = m_mv[ref_list];
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}
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}
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}
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@ -1063,7 +1130,7 @@ bool Parser::inter_block_mode_info()
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SAFE_CALL(assign_mv(is_compound));
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for (auto ref_list = 0; ref_list < 1 + is_compound; ref_list++) {
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for (auto block = 0; block < 4; block++) {
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// TODO: m_block_mvs[ref_list][block] = m_mv[ref_list];
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m_block_mvs[ref_list][block] = m_mv[ref_list];
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}
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}
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return true;
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@ -24,6 +24,7 @@ class Parser {
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public:
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explicit Parser(Decoder&);
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~Parser();
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bool parse_frame(ByteBuffer const&);
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void dump_info();
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@ -45,6 +46,8 @@ private:
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/* Utilities */
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void clear_context(Vector<u8>& context, size_t size);
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void clear_context(Vector<Vector<u8>>& context, size_t outer_size, size_t inner_size);
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void allocate_tile_data();
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void cleanup_tile_allocations();
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/* (6.1) Frame Syntax */
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bool trailing_bits();
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@ -208,30 +211,39 @@ private:
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u8 m_uv_mode { 0 }; // FIXME: Is u8 the right size?
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ReferenceFrame m_left_ref_frame[2];
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ReferenceFrame m_above_ref_frame[2];
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Vector<Vector<Vector<ReferenceFrame>>> m_ref_frames; // TODO: Can we make these fixed sized allocations?
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bool m_left_intra { false };
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bool m_above_intra { false };
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bool m_left_single { false };
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bool m_above_single { false };
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Vector<Vector<u8>> m_prev_segment_ids;
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InterpolationFilter m_interp_filter { EightTap };
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InterMode m_mv[2];
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InterMode m_near_mv[2];
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InterMode m_nearest_mv[2];
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Vector<Vector<Vector<IntraMode>>> m_sub_modes; // FIXME: Can we make these fixed sized allocations?
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u32 m_ref_frame_width[NUM_REF_FRAMES];
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u32 m_ref_frame_height[NUM_REF_FRAMES];
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u32 m_eob_total { 0 };
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u8 m_tx_type { 0 };
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u8 m_token_cache[1024];
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i32 m_tokens[1024];
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bool m_use_hp { false };
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TXMode m_tx_mode;
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ReferenceMode m_reference_mode;
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ReferenceFrame m_comp_fixed_ref;
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ReferenceFrame m_comp_var_ref[2];
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InterMode m_block_mvs[2][4];
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u8* m_prev_segment_ids { nullptr };
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u32 m_allocated_dimensions { 0 };
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bool* m_skips { nullptr };
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TXSize* m_tx_sizes { nullptr };
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u32* m_mi_sizes { nullptr };
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u8* m_y_modes { nullptr };
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u8* m_segment_ids { nullptr };
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ReferenceFrame* m_ref_frames { nullptr };
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InterpolationFilter* m_interp_filters { nullptr };
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InterMode* m_mvs { nullptr };
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InterMode* m_sub_mvs { nullptr };
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IntraMode* m_sub_modes { nullptr };
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OwnPtr<BitStream> m_bit_stream;
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OwnPtr<ProbabilityTables> m_probability_tables;
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@ -208,26 +208,26 @@ u8 TreeParser::calculate_default_intra_mode_probability(u8 node)
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{
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u32 above_mode, left_mode;
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if (m_decoder.m_mi_size >= Block_8x8) {
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above_mode = false // FIXME: AVAIL_U
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? m_decoder.m_sub_modes[m_decoder.m_mi_row - 1][m_decoder.m_mi_col][2]
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above_mode = AVAIL_U
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? m_decoder.m_sub_modes[(m_decoder.m_mi_row - 1) * m_decoder.m_mi_cols * 4 + m_decoder.m_mi_col * 4 + 2]
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: DcPred;
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left_mode = false // FIXME: AVAIL_L
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? m_decoder.m_sub_modes[m_decoder.m_mi_row][m_decoder.m_mi_col - 1][1]
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left_mode = AVAIL_L
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? m_decoder.m_sub_modes[m_decoder.m_mi_row * m_decoder.m_mi_cols * 4 + (m_decoder.m_mi_col - 1) * 4 + 1]
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: DcPred;
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} else {
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if (m_idy) {
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above_mode = m_decoder.m_block_sub_modes[m_idx];
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} else {
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above_mode = false // FIXME: AVAIL_U
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? m_decoder.m_sub_modes[m_decoder.m_mi_row - 1][m_decoder.m_mi_col][2 + m_idx]
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above_mode = AVAIL_U
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? m_decoder.m_sub_modes[(m_decoder.m_mi_row - 1) * m_decoder.m_mi_cols * 4 + m_decoder.m_mi_col * 4 + 2 + m_idx]
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: DcPred;
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}
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if (m_idx) {
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left_mode = m_decoder.m_block_sub_modes[m_idy * 2];
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} else {
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left_mode = false // FIXME: AVAIL_L
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? m_decoder.m_sub_modes[m_decoder.m_mi_row][m_decoder.m_mi_col - 1][1 + m_idy * 2]
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left_mode = AVAIL_L
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? m_decoder.m_sub_modes[m_decoder.m_mi_row * m_decoder.m_mi_cols * 4 + (m_decoder.m_mi_col - 1) * 4 + 1 + m_idy * 2]
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: DcPred;
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}
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}
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@ -265,12 +265,10 @@ u8 TreeParser::calculate_segment_id_probability(u8 node)
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u8 TreeParser::calculate_skip_probability()
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{
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m_ctx = 0;
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if (AVAIL_U) {
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// FIXME: m_ctx += m_skips[m_mi_row - 1][m_mi_col];
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}
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if (AVAIL_L) {
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// FIXME: m_ctx += m_skips[m_mi_row][m_mi_col - 1];
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}
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if (AVAIL_U)
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m_ctx += m_decoder.m_skips[(m_decoder.m_mi_row - 1) * m_decoder.m_mi_cols + m_decoder.m_mi_col];
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if (AVAIL_L)
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m_ctx += m_decoder.m_skips[m_decoder.m_mi_row * m_decoder.m_mi_cols + m_decoder.m_mi_col - 1];
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return m_decoder.m_probability_tables->skip_prob()[m_ctx];
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}
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@ -543,7 +541,16 @@ u8 TreeParser::calculate_tx_size_probability(u8 node)
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{
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auto above = m_decoder.m_max_tx_size;
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auto left = m_decoder.m_max_tx_size;
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// FIXME: Fix varying above/left when Skips is implemented
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auto u_pos = (m_decoder.m_mi_row - 1) * m_decoder.m_mi_cols + m_decoder.m_mi_col;
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if (AVAIL_U && !m_decoder.m_skips[u_pos])
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above = m_decoder.m_tx_sizes[u_pos];
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auto l_pos = m_decoder.m_mi_row * m_decoder.m_mi_cols + m_decoder.m_mi_col - 1;
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if (AVAIL_L && !m_decoder.m_skips[l_pos])
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left = m_decoder.m_tx_sizes[l_pos];
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if (!AVAIL_L)
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left = above;
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if (!AVAIL_U)
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above = left;
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m_ctx = (above + left) > m_decoder.m_max_tx_size;
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return m_decoder.m_probability_tables->tx_probs()[m_decoder.m_max_tx_size][m_ctx][node];
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}
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@ -557,7 +564,18 @@ u8 TreeParser::calculate_inter_mode_probability(u8 node)
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u8 TreeParser::calculate_interp_filter_probability(u8 node)
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{
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// FIXME: Implement ctx calculation when InterpFilters is implemented
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auto left_interp = (AVAIL_L && m_decoder.m_left_ref_frame[0] > IntraFrame)
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? m_decoder.m_interp_filters[m_decoder.m_mi_row * m_decoder.m_mi_cols + m_decoder.m_mi_col - 1]
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: 3;
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auto above_interp = (AVAIL_U && m_decoder.m_above_ref_frame[0] > IntraFrame)
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? m_decoder.m_interp_filters[m_decoder.m_mi_row * m_decoder.m_mi_cols + m_decoder.m_mi_col - 1]
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: 3;
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if (left_interp == above_interp || (left_interp != 3 && above_interp == 3))
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m_ctx = left_interp;
|
||||
else if (left_interp == 3 && above_interp != 3)
|
||||
m_ctx = above_interp;
|
||||
else
|
||||
m_ctx = 3;
|
||||
return m_decoder.m_probability_tables->interp_filter_probs()[m_ctx][node];
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue