| /* |
| * Copyright 2019 The libgav1 Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef LIBGAV1_SRC_SYMBOL_DECODER_CONTEXT_H_ |
| #define LIBGAV1_SRC_SYMBOL_DECODER_CONTEXT_H_ |
| |
| #include <cstdint> |
| |
| #include "src/dsp/constants.h" |
| #include "src/utils/constants.h" |
| |
| namespace libgav1 { |
| |
| enum { |
| kPartitionContexts = 4, |
| kSegmentIdContexts = 3, |
| kUsePredictedSegmentIdContexts = 3, |
| kSkipContexts = 3, |
| kSkipModeContexts = 3, |
| kBooleanFieldCdfSize = 3, |
| kDeltaSymbolCount = 4, // Used for both delta_q and delta_lf. |
| kIntraModeContexts = 5, |
| kYModeContexts = 4, |
| kAngleDeltaSymbolCount = 2 * kMaxAngleDelta + 1, |
| kCflAlphaSignsSymbolCount = 8, |
| kCflAlphaContexts = 6, |
| kCflAlphaSymbolCount = 16, |
| kTxDepthContexts = 3, |
| kMaxTxDepthSymbolCount = 3, |
| kTxSplitContexts = 21, |
| kCoefficientQuantizerContexts = 4, |
| kNumSquareTransformSizes = 5, |
| kAllZeroContexts = 13, |
| kNumExtendedTransformSizes = 4, |
| kEobPtContexts = 2, |
| kEobPt16SymbolCount = 5, |
| kEobPt32SymbolCount = 6, |
| kEobPt64SymbolCount = 7, |
| kEobPt128SymbolCount = 8, |
| kEobPt256SymbolCount = 9, |
| kEobPt512SymbolCount = 10, |
| kEobPt1024SymbolCount = 11, |
| kEobExtraContexts = 9, |
| kCoeffBaseEobContexts = 4, |
| kCoeffBaseEobSymbolCount = 3, |
| kCoeffBaseContexts = 42, |
| kCoeffBaseSymbolCount = 4, |
| kCoeffBaseRangeContexts = 21, |
| kCoeffBaseRangeSymbolCount = 4, |
| kDcSignContexts = 3, |
| kPaletteBlockSizeContexts = 7, |
| kPaletteYModeContexts = 3, |
| kPaletteUVModeContexts = 2, |
| kPaletteSizeSymbolCount = 7, |
| kPaletteColorIndexContexts = 5, |
| kPaletteColorIndexSymbolCount = 8, |
| kIsInterContexts = 4, |
| kUseCompoundReferenceContexts = 5, |
| kCompoundReferenceTypeContexts = 5, |
| kReferenceContexts = 3, |
| kCompoundPredictionModeContexts = 8, |
| kNewMvContexts = 6, |
| kZeroMvContexts = 2, |
| kReferenceMvContexts = 6, |
| kRefMvIndexContexts = 3, |
| kInterIntraContexts = 3, |
| kWedgeIndexSymbolCount = 16, |
| kIsExplicitCompoundTypeContexts = 6, |
| kIsCompoundTypeAverageContexts = 6, |
| kInterpolationFilterContexts = 16, |
| kMvContexts = 2, |
| kMvClassSymbolCount = 11, |
| kMvFractionSymbolCount = 4, |
| kMvBitSymbolCount = 10, |
| kNumMvComponents = 2, |
| }; // anonymous enum |
| |
| struct SymbolDecoderContext { |
| SymbolDecoderContext() = default; |
| explicit SymbolDecoderContext(int base_quantizer_index) { |
| Initialize(base_quantizer_index); |
| } |
| |
| void Initialize(int base_quantizer_index); |
| |
| // Partition related variables and functions. |
| static int PartitionCdfSize(int block_size_log2); |
| |
| // Returns the cdf array index for inter_tx_type or intra_tx_type based on |
| // |tx_set|. |
| static int TxTypeIndex(TransformSet tx_set); |
| |
| // Resets the intra_frame_y_mode_cdf array to the default. |
| void ResetIntraFrameYModeCdf(); |
| |
| // Resets the symbol counters of all the CDF arrays to zero. Symbol counter is |
| // the last used element in the innermost dimension of each of the CDF array. |
| void ResetCounters(); |
| |
| uint16_t partition_cdf[kBlockWidthCount][kPartitionContexts] |
| [kMaxPartitionTypes + 1]; |
| uint16_t segment_id_cdf[kSegmentIdContexts][kMaxSegments + 1]; |
| uint16_t use_predicted_segment_id_cdf[kUsePredictedSegmentIdContexts] |
| [kBooleanFieldCdfSize]; |
| uint16_t skip_cdf[kSkipContexts][kBooleanFieldCdfSize]; |
| uint16_t skip_mode_cdf[kSkipModeContexts][kBooleanFieldCdfSize]; |
| uint16_t delta_q_cdf[kDeltaSymbolCount + 1]; |
| uint16_t delta_lf_cdf[kDeltaSymbolCount + 1]; |
| uint16_t delta_lf_multi_cdf[kFrameLfCount][kDeltaSymbolCount + 1]; |
| uint16_t intra_block_copy_cdf[kBooleanFieldCdfSize]; |
| uint16_t intra_frame_y_mode_cdf[kIntraModeContexts][kIntraModeContexts] |
| [kIntraPredictionModesY + 1]; |
| uint16_t y_mode_cdf[kYModeContexts][kIntraPredictionModesY + 1]; |
| uint16_t angle_delta_cdf[kDirectionalIntraModes][kAngleDeltaSymbolCount + 1]; |
| uint16_t uv_mode_cdf[kBooleanSymbolCount][kIntraPredictionModesY] |
| [kIntraPredictionModesUV + 1]; |
| uint16_t cfl_alpha_signs_cdf[kCflAlphaSignsSymbolCount + 1]; |
| uint16_t cfl_alpha_cdf[kCflAlphaContexts][kCflAlphaSymbolCount + 1]; |
| uint16_t use_filter_intra_cdf[kMaxBlockSizes][kBooleanFieldCdfSize]; |
| uint16_t filter_intra_mode_cdf[kNumFilterIntraPredictors + 1]; |
| uint16_t tx_depth_cdf[4][kTxDepthContexts][kMaxTxDepthSymbolCount + 1]; |
| uint16_t tx_split_cdf[kTxSplitContexts][kBooleanFieldCdfSize]; |
| uint16_t all_zero_cdf[kNumSquareTransformSizes][kAllZeroContexts] |
| [kBooleanFieldCdfSize]; |
| uint16_t inter_tx_type_cdf[3][kNumExtendedTransformSizes] |
| [kNumTransformTypes + 1]; |
| uint16_t intra_tx_type_cdf[2][kNumExtendedTransformSizes] |
| [kIntraPredictionModesY][kNumTransformTypes + 1]; |
| uint16_t eob_pt_16_cdf[kNumPlaneTypes][kEobPtContexts] |
| [kEobPt16SymbolCount + 1]; |
| uint16_t eob_pt_32_cdf[kNumPlaneTypes][kEobPtContexts] |
| [kEobPt32SymbolCount + 1]; |
| uint16_t eob_pt_64_cdf[kNumPlaneTypes][kEobPtContexts] |
| [kEobPt64SymbolCount + 1]; |
| uint16_t eob_pt_128_cdf[kNumPlaneTypes][kEobPtContexts] |
| [kEobPt128SymbolCount + 1]; |
| uint16_t eob_pt_256_cdf[kNumPlaneTypes][kEobPtContexts] |
| [kEobPt256SymbolCount + 1]; |
| uint16_t eob_pt_512_cdf[kNumPlaneTypes][kEobPt512SymbolCount + 1]; |
| uint16_t eob_pt_1024_cdf[kNumPlaneTypes][kEobPt1024SymbolCount + 1]; |
| uint16_t eob_extra_cdf[kNumSquareTransformSizes][kNumPlaneTypes] |
| [kEobExtraContexts][kBooleanFieldCdfSize]; |
| uint16_t coeff_base_eob_cdf[kNumSquareTransformSizes][kNumPlaneTypes] |
| [kCoeffBaseEobContexts] |
| [kCoeffBaseEobSymbolCount + 1]; |
| uint16_t coeff_base_cdf[kNumSquareTransformSizes][kNumPlaneTypes] |
| [kCoeffBaseContexts][kCoeffBaseSymbolCount + 1]; |
| uint16_t coeff_base_range_cdf[kNumSquareTransformSizes][kNumPlaneTypes] |
| [kCoeffBaseRangeContexts] |
| [kCoeffBaseRangeSymbolCount + 1]; |
| uint16_t dc_sign_cdf[kNumPlaneTypes][kDcSignContexts][kBooleanFieldCdfSize]; |
| uint16_t restoration_type_cdf[kRestorationTypeSymbolCount + 1]; |
| uint16_t use_wiener_cdf[kBooleanFieldCdfSize]; |
| uint16_t use_sgrproj_cdf[kBooleanFieldCdfSize]; |
| uint16_t has_palette_y_cdf[kPaletteBlockSizeContexts][kPaletteYModeContexts] |
| [kBooleanFieldCdfSize]; |
| uint16_t palette_y_size_cdf[kPaletteBlockSizeContexts] |
| [kPaletteSizeSymbolCount + 1]; |
| uint16_t has_palette_uv_cdf[kPaletteUVModeContexts][kBooleanFieldCdfSize]; |
| uint16_t palette_uv_size_cdf[kPaletteBlockSizeContexts] |
| [kPaletteSizeSymbolCount + 1]; |
| uint16_t palette_color_index_cdf[kNumPlaneTypes][kPaletteSizeSymbolCount] |
| [kPaletteColorIndexContexts] |
| [kPaletteColorIndexSymbolCount + 1]; |
| uint16_t is_inter_cdf[kIsInterContexts][kBooleanFieldCdfSize]; |
| uint16_t use_compound_reference_cdf[kUseCompoundReferenceContexts] |
| [kBooleanFieldCdfSize]; |
| uint16_t compound_reference_type_cdf[kCompoundReferenceTypeContexts] |
| [kBooleanFieldCdfSize]; |
| uint16_t compound_reference_cdf[kNumCompoundReferenceTypes] |
| [kReferenceContexts][3][kBooleanFieldCdfSize]; |
| uint16_t compound_backward_reference_cdf[kReferenceContexts][2] |
| [kBooleanFieldCdfSize]; |
| uint16_t single_reference_cdf[kReferenceContexts][6][kBooleanFieldCdfSize]; |
| uint16_t compound_prediction_mode_cdf[kCompoundPredictionModeContexts] |
| [kNumCompoundInterPredictionModes + 1]; |
| uint16_t new_mv_cdf[kNewMvContexts][kBooleanFieldCdfSize]; |
| uint16_t zero_mv_cdf[kZeroMvContexts][kBooleanFieldCdfSize]; |
| uint16_t reference_mv_cdf[kReferenceMvContexts][kBooleanFieldCdfSize]; |
| uint16_t ref_mv_index_cdf[kRefMvIndexContexts][kBooleanFieldCdfSize]; |
| uint16_t is_inter_intra_cdf[kInterIntraContexts][kBooleanFieldCdfSize]; |
| uint16_t inter_intra_mode_cdf[kInterIntraContexts][kNumInterIntraModes + 1]; |
| uint16_t is_wedge_inter_intra_cdf[kMaxBlockSizes][kBooleanFieldCdfSize]; |
| uint16_t wedge_index_cdf[kMaxBlockSizes][kWedgeIndexSymbolCount + 1]; |
| uint16_t use_obmc_cdf[kMaxBlockSizes][kBooleanFieldCdfSize]; |
| uint16_t motion_mode_cdf[kMaxBlockSizes][kNumMotionModes + 1]; |
| uint16_t is_explicit_compound_type_cdf[kIsExplicitCompoundTypeContexts] |
| [kBooleanFieldCdfSize]; |
| uint16_t is_compound_type_average_cdf[kIsCompoundTypeAverageContexts] |
| [kBooleanFieldCdfSize]; |
| uint16_t compound_type_cdf[kMaxBlockSizes] |
| [kNumExplicitCompoundPredictionTypes + 1]; |
| uint16_t interpolation_filter_cdf[kInterpolationFilterContexts] |
| [kNumExplicitInterpolationFilters + 1]; |
| uint16_t mv_joint_cdf[kMvContexts][kNumMvJointTypes + 1]; |
| uint16_t mv_sign_cdf[kMvContexts][kNumMvComponents][kBooleanFieldCdfSize]; |
| uint16_t mv_class_cdf[kMvContexts][kNumMvComponents][kMvClassSymbolCount + 1]; |
| uint16_t mv_class0_bit_cdf[kMvContexts][kNumMvComponents] |
| [kBooleanFieldCdfSize]; |
| uint16_t mv_class0_fraction_cdf[kMvContexts][kNumMvComponents] |
| [kBooleanSymbolCount] |
| [kMvFractionSymbolCount + 1]; |
| uint16_t mv_class0_high_precision_cdf[kMvContexts][kNumMvComponents] |
| [kBooleanFieldCdfSize]; |
| uint16_t mv_bit_cdf[kMvContexts][kNumMvComponents][kMvBitSymbolCount] |
| [kBooleanFieldCdfSize]; |
| uint16_t mv_fraction_cdf[kMvContexts][kNumMvComponents] |
| [kMvFractionSymbolCount + 1]; |
| uint16_t mv_high_precision_cdf[kMvContexts][kNumMvComponents] |
| [kBooleanFieldCdfSize]; |
| }; |
| |
| } // namespace libgav1 |
| #endif // LIBGAV1_SRC_SYMBOL_DECODER_CONTEXT_H_ |
