1 /* 2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved 3 * 4 * This source code is subject to the terms of the BSD 2 Clause License and 5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License 6 * was not distributed with this source code in the LICENSE file, you can 7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open 8 * Media Patent License 1.0 was not distributed with this source code in the 9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent. 10 */ 11 12 #ifndef AOM_AV1_COMMON_SEG_COMMON_H_ 13 #define AOM_AV1_COMMON_SEG_COMMON_H_ 14 15 #include "aom_dsp/prob.h" 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif 20 21 #define MAX_SEGMENTS 8 22 #define SEG_TREE_PROBS (MAX_SEGMENTS - 1) 23 24 #define SEG_TEMPORAL_PRED_CTXS 3 25 #define SPATIAL_PREDICTION_PROBS 3 26 27 enum { 28 SEG_LVL_ALT_Q, // Use alternate Quantizer .... 29 SEG_LVL_ALT_LF_Y_V, // Use alternate loop filter value on y plane vertical 30 SEG_LVL_ALT_LF_Y_H, // Use alternate loop filter value on y plane horizontal 31 SEG_LVL_ALT_LF_U, // Use alternate loop filter value on u plane 32 SEG_LVL_ALT_LF_V, // Use alternate loop filter value on v plane 33 SEG_LVL_REF_FRAME, // Optional Segment reference frame 34 SEG_LVL_SKIP, // Optional Segment (0,0) + skip mode 35 SEG_LVL_GLOBALMV, 36 SEG_LVL_MAX 37 } UENUM1BYTE(SEG_LVL_FEATURES); 38 39 struct segmentation { 40 uint8_t enabled; 41 uint8_t update_map; 42 uint8_t update_data; 43 uint8_t temporal_update; 44 45 int16_t feature_data[MAX_SEGMENTS][SEG_LVL_MAX]; 46 unsigned int feature_mask[MAX_SEGMENTS]; 47 int last_active_segid; // The highest numbered segment id that has some 48 // enabled feature. 49 uint8_t segid_preskip; // Whether the segment id will be read before the 50 // skip syntax element. 51 // 1: the segment id will be read first. 52 // 0: the skip syntax element will be read first. 53 }; 54 55 struct segmentation_probs { 56 aom_cdf_prob tree_cdf[CDF_SIZE(MAX_SEGMENTS)]; 57 aom_cdf_prob pred_cdf[SEG_TEMPORAL_PRED_CTXS][CDF_SIZE(2)]; 58 aom_cdf_prob spatial_pred_seg_cdf[SPATIAL_PREDICTION_PROBS] 59 [CDF_SIZE(MAX_SEGMENTS)]; 60 }; 61 62 static INLINE int segfeature_active(const struct segmentation *seg, 63 int segment_id, 64 SEG_LVL_FEATURES feature_id) { 65 return seg->enabled && (seg->feature_mask[segment_id] & (1 << feature_id)); 66 } 67 68 static INLINE void segfeatures_copy(struct segmentation *dst, 69 const struct segmentation *src) { 70 int i, j; 71 for (i = 0; i < MAX_SEGMENTS; i++) { 72 dst->feature_mask[i] = src->feature_mask[i]; 73 for (j = 0; j < SEG_LVL_MAX; j++) { 74 dst->feature_data[i][j] = src->feature_data[i][j]; 75 } 76 } 77 dst->segid_preskip = src->segid_preskip; 78 dst->last_active_segid = src->last_active_segid; 79 } 80 81 void av1_clearall_segfeatures(struct segmentation *seg); 82 83 void av1_enable_segfeature(struct segmentation *seg, int segment_id, 84 SEG_LVL_FEATURES feature_id); 85 86 void calculate_segdata(struct segmentation *seg); 87 88 int av1_seg_feature_data_max(SEG_LVL_FEATURES feature_id); 89 90 int av1_is_segfeature_signed(SEG_LVL_FEATURES feature_id); 91 92 void av1_set_segdata(struct segmentation *seg, int segment_id, 93 SEG_LVL_FEATURES feature_id, int seg_data); 94 95 static INLINE int get_segdata(const struct segmentation *seg, int segment_id, 96 SEG_LVL_FEATURES feature_id) { 97 return seg->feature_data[segment_id][feature_id]; 98 } 99 100 #ifdef __cplusplus 101 } // extern "C" 102 #endif 103 104 #endif // AOM_AV1_COMMON_SEG_COMMON_H_ 105
