113 lines
3.9 KiB
C
113 lines
3.9 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved.
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AOM_AV1_COMMON_SEG_COMMON_H_
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#define AOM_AV1_COMMON_SEG_COMMON_H_
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#include "aom_dsp/prob.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_SEGMENTS 8
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#define SEG_TREE_PROBS (MAX_SEGMENTS - 1)
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#define SEG_TEMPORAL_PRED_CTXS 3
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#define SPATIAL_PREDICTION_PROBS 3
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enum {
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SEG_LVL_ALT_Q, // Use alternate Quantizer ....
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SEG_LVL_ALT_LF_Y_V, // Use alternate loop filter value on y plane vertical
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SEG_LVL_ALT_LF_Y_H, // Use alternate loop filter value on y plane horizontal
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SEG_LVL_ALT_LF_U, // Use alternate loop filter value on u plane
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SEG_LVL_ALT_LF_V, // Use alternate loop filter value on v plane
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SEG_LVL_REF_FRAME, // Optional Segment reference frame
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SEG_LVL_SKIP, // Optional Segment (0,0) + skip mode
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SEG_LVL_GLOBALMV,
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SEG_LVL_MAX
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} UENUM1BYTE(SEG_LVL_FEATURES);
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struct segmentation {
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uint8_t enabled;
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uint8_t update_map;
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uint8_t update_data;
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uint8_t temporal_update;
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int16_t feature_data[MAX_SEGMENTS][SEG_LVL_MAX];
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unsigned int feature_mask[MAX_SEGMENTS];
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int last_active_segid; // The highest numbered segment id that has some
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// enabled feature.
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uint8_t segid_preskip; // Whether the segment id will be read before the
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// skip syntax element.
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// 1: the segment id will be read first.
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// 0: the skip syntax element will be read first.
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};
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struct segmentation_probs {
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aom_cdf_prob pred_cdf[SEG_TEMPORAL_PRED_CTXS][CDF_SIZE(2)];
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aom_cdf_prob spatial_pred_seg_cdf[SPATIAL_PREDICTION_PROBS]
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[CDF_SIZE(MAX_SEGMENTS)];
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};
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static inline int segfeature_active(const struct segmentation *seg,
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uint8_t segment_id,
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SEG_LVL_FEATURES feature_id) {
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return seg->enabled && (seg->feature_mask[segment_id] & (1 << feature_id));
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}
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static inline void segfeatures_copy(struct segmentation *dst,
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const struct segmentation *src) {
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int i, j;
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for (i = 0; i < MAX_SEGMENTS; i++) {
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dst->feature_mask[i] = src->feature_mask[i];
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for (j = 0; j < SEG_LVL_MAX; j++) {
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dst->feature_data[i][j] = src->feature_data[i][j];
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}
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}
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dst->segid_preskip = src->segid_preskip;
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dst->last_active_segid = src->last_active_segid;
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}
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void av1_clearall_segfeatures(struct segmentation *seg);
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void av1_enable_segfeature(struct segmentation *seg, int segment_id,
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SEG_LVL_FEATURES feature_id);
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void av1_calculate_segdata(struct segmentation *seg);
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int av1_seg_feature_data_max(SEG_LVL_FEATURES feature_id);
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int av1_is_segfeature_signed(SEG_LVL_FEATURES feature_id);
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void av1_set_segdata(struct segmentation *seg, int segment_id,
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SEG_LVL_FEATURES feature_id, int seg_data);
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static inline int get_segdata(const struct segmentation *seg, int segment_id,
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SEG_LVL_FEATURES feature_id) {
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return seg->feature_data[segment_id][feature_id];
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}
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static inline void set_segment_id(uint8_t *segment_ids, int mi_offset,
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int x_mis, int y_mis, int mi_stride,
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uint8_t segment_id) {
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segment_ids += mi_offset;
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for (int y = 0; y < y_mis; ++y) {
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memset(&segment_ids[y * mi_stride], segment_id,
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x_mis * sizeof(segment_ids[0]));
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}
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}
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AOM_AV1_COMMON_SEG_COMMON_H_
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